CN1954754A - Dust display device and electric vacuum cleaner equipped with the device - Google Patents

Abstract

The dust collector of the present invention is capable of not only allowing user to know the quantity and presence or absence of dust, but also executing dust display matching with the actual sensation of user, so as to improve the legibility of dust display. The electric dust collector dust display device of the present invention comprises a first dust detecting device(35); a second dust detecting device(36); a first holding device(37)for giving holding time to each signal and outputting a first holding signal based on the first dust detecting signal detected by the first dust detecting device; a second holding device(38)for giving holding time to each signal and outputting a second holding signal based on the second dust detecting signal detected by the second dust detecting device; and a display control device(40)for controlling the display device(11)and the display state thereof based on the first holding signal and the second holding signal. Thus, the dust of different sizes can be detected according to various sizes of the dust so as to improve the legibility of dust display.

Description

Translated fromChinese

灰尘显示装置以及具备该装置的电动吸尘器Dust display device and electric vacuum cleaner equipped with the device

技术领域technical field

本发明涉及一种在普通的家用或业务用的电动吸尘器中显示灰尘状况的灰尘显示装置、包括用于电动吸尘器中的地面吸头等附件。The invention relates to a dust display device for displaying dust status in an ordinary household or commercial electric vacuum cleaner, including accessories such as a floor suction head used in the electric vacuum cleaner.

背景技术Background technique

图11中示出了现有电动吸尘器的概略结构示意图。FIG. 11 shows a schematic structural diagram of a conventional electric vacuum cleaner.

在图11中，1为电动吸尘器机体，2为设置机体1内部的用于产生吸尘力的电动风机，3为软管，其上设有能选择电动风机2的操作模式、从而在不同的电源功率下进行操作的操作单元4，5为加长管，8为与被吸尘面相接触、将灰尘等吸起的吸头，6为用于存积吸入的灰尘的集尘室。软管3和集尘室6之间通过设在机体1上的吸尘口7连联接，集尘室6、软管3、加长管5和吸头8形成了吸尘通道。In Fig. 11, 1 is the body of the electric vacuum cleaner, 2 is the electric blower installed inside thebody 1 for generating dust suction, and 3 is a hose on which the operation mode of theelectric blower 2 can be selected, so that it can be used indifferent Operating units 4 and 5 that operate under the power supply are extension tubes, 8 is a suction head that is in contact with the surface to be vacuumed and sucks up dust, and 6 is a dust collection chamber for storing the sucked dust. Thehose 3 and thedust collection chamber 6 are connected through the dust suction port 7 provided on thebody 1, and thedust collection chamber 6, thehose 3, theextension pipe 5 and thesuction head 8 form a dust suction passage.

在软管3与机体1之间的联结部12附近，设有后面将要提到的、用于检测穿过吸尘通道的灰尘的(灰尘检测装置10中的)检测单元22。操作单元4中设有用于显示出由灰尘检测装置10监测到的灰尘状况的显示装置11。In the vicinity of thecoupling portion 12 between thehose 3 and thebody 1, a detection unit 22 (in the dust detection device 10) for detecting dust passing through the dust suction passage, which will be mentioned later, is provided. Theoperating unit 4 is provided with a display device 11 for displaying the dust condition monitored by thedust detection device 10 .

在使用具有上述构成的电动吸尘器进行吸尘时，用户首先对操作单元4进行操作，对电动风机2进行供电，从对电动风机2的供电被停止的停止模式进入工作模式。这样，灰尘即被吸头8吸起，并穿过吸尘通道，存积在集尘室6中。When using the electric vacuum cleaner with the above configuration to clean dust, the user first operates theoperation unit 4 to supply power to theelectric blower 2, and enters the operation mode from the stop mode in which the power supply to theelectric blower 2 is stopped. In this way, the dust is sucked up by thesuction head 8, and passes through the dust suction passage, and is deposited in thedust collection chamber 6.

上述的装置构成中的现有灰尘检测装置10的构成如图12及图13中所示。如图12及图13中所示，在灰尘流过的空气通道上设有互相正对着的发光单元20和受光单元21，发光单元20对着灰尘流过的吸尘通道发出光线，受光单元21则接受从发光单元20发出的光，并输出与受光量相对应的信号(下面将发光单元20和受光单元21合称为“检测单元22”)。受光单元21的输出信号Vs先由放大单元23进行放大，然后由脉冲变换装置24变换成脉冲Sa后，输入到灰尘判断装置25中。灰尘检测装置10由检测单元22、放大单元23和脉冲变换装置24构成。脉冲变换装置24输出数量与灰尘的数量相对应的脉冲Sa，即通过检测单元22的灰尘的数量越多，脉冲的数量也越多，灰尘的数量越少，脉冲的数量也越少；另外，灰尘的颗粒越大，脉冲的宽度越宽，灰尘的颗粒越小，脉冲的宽度也就越狭。The configuration of a conventionaldust detection device 10 among the above-mentioned device configurations is shown in FIGS. 12 and 13 . As shown in Fig. 12 and Fig. 13, on the air channel through which the dust flows, there are light-emittingunit 20 and light-receivingunit 21 facing each other. 21 receives the light emitted from thelight emitting unit 20, and outputs a signal corresponding to the amount of received light (hereinafter, thelight emitting unit 20 and thelight receiving unit 21 are collectively referred to as "detection unit 22"). The output signal Vs of thelight receiving unit 21 is first amplified by the amplifyingunit 23 , then converted into a pulse Sa by thepulse converting unit 24 , and then input to thedust judging unit 25 . Thedust detection device 10 is composed of adetection unit 22 , anamplification unit 23 and apulse conversion device 24 . Thepulse conversion device 24 outputs the pulse Sa corresponding to the quantity of dust, that is, the more the quantity of dust passing through thedetection unit 22, the more the quantity of the pulse, and the less the quantity of the dust, the less the quantity of the pulse; in addition, The larger the dust particles, the wider the pulse width, and the smaller the dust particles, the narrower the pulse width.

灰尘判断装置25对这一脉冲Sa的数量进行计数，同时在计测到脉冲宽度很宽的场合亦即灰尘较大的场合下，则增大对脉冲Sa计数得到的数量，进行校正；同时，从脉冲Sa的多少掌握穿过吸尘通道的灰尘量，从而可以判断出的地面上的灰尘量。Thedust judging device 25 counts the number of this pulse Sa, and at the same time, when it is detected that the pulse width is very wide, that is, the dust is relatively large, the number obtained by counting the pulse Sa is increased to correct it; at the same time, The amount of dust on the ground can be judged from the amount of pulse Sa to grasp the amount of dust passing through the dust suction channel.

在现有的吸尘器中，采用了根据上述脉冲Sa的多少来使向电动风机2提供的电源功率发生变化，在显示装置11上通过多个等级显示出供电状况，并根据检测出的脏度情况对控制对象进行控制。如日本专利2000648中公开了这样的控制方式：对于灰尘检测装置10的输出，使对作为控制对象的电动风机2提供的电源功率保持一定的期间。In the existing vacuum cleaner, the power supply provided to theelectric fan 2 is changed according to the number of the above-mentioned pulse Sa, and the power supply status is displayed on the display device 11 through multiple levels, and according to the detected dirt condition Control the control object. For example, Japanese Patent No. 2000648 discloses a control system in which the output of thedust detection device 10 is maintained for a certain period of time with respect to the power supply to theelectric fan 2 to be controlled.

另外，日本专利2058676中公开了通过显示装置11与向电动风机2提供的电源功率独立地显示出灰尘检测装置10的检测状况的方式。In addition, Japanese Patent No. 2058676 discloses a method in which the detection status of thedust detection device 10 is displayed independently of the power supplied to theelectric fan 2 by the display device 11 .

而日本专利公开公报特开2001-74301中则公开了并不是对于检测到的脏度使控制对象进行实时追随，而是在隔了一定的时间之后再进行阶段性跟踪的方式。However, Japanese Patent Laid-Open Publication No. 2001-74301 discloses that the detected dirtyness is not followed in real time by the control object, but is followed after a certain period of time.

近年，由于生活环境的变化，人们对眼睛看不到的花粉等房屋灰尘的关心愈来愈高，并且希望电动吸尘器也能检测、识别出这些细微的灰尘。In recent years, due to changes in the living environment, people are increasingly concerned about house dust such as pollen that cannot be seen by the eyes, and it is desired that electric vacuum cleaners can also detect and identify such fine dust.

在作为一般家庭中的吸尘对象的灰尘中，存在着各种各样的粒径，大到数mm级可以看到的灰尘，小到难于看清的花粉等一般为20μm～40μm及沙尘等数100μm左右的细微灰尘。In the dust that is the object of vacuuming in general households, there are various particle sizes. Dust that is as large as several millimeters can be seen, and pollen that is so small that it is difficult to see is generally 20 μm to 40 μm and sand dust. Wait for the fine dust of about 100μm.

但是，在上述的现有吸尘器中，如果设定成对花粉等细微灰尘作出反应、并根据脉冲数在显示装置中显示出灰尘状况的话，在颗粒大的灰尘较多的时候，由于宽度大的脉冲增多，而脉冲的数量将减少，因此反而会显示出灰尘较少的结果。另外，当设定成只对沙尘等达到或超过一定大小的灰尘作出反应地来显示灰尘状况的话，细微即使较多也不会有反应，会显示出没有灰尘存在的状态。反过来，如果以细微灰尘为基准，在脉冲数变少时进行校正、到达规定的脉冲数时则设置一定期间的保持时间进行显示的话，虽然用户对于沙尘等的认知性可以得到提高，但由于细微灰尘多的时候脉冲数也多，造成显示出比实际存在多的灰尘，与用户的实际感觉就会差之甚远。However, in the above-mentioned existing vacuum cleaner, if it is set to respond to fine dust such as pollen, and the dust condition is displayed on the display device according to the number of pulses, when there are many large dust particles, due to the large width With more pulses, the number of pulses will decrease, thus showing less dusty results instead. In addition, if it is set to display the dust status only in response to dust of a certain size or more, such as sand and dust, even if it is fine, there will be no response, and the state of no dust will be displayed. Conversely, if the fine dust is used as a reference, if the pulse number is corrected when it decreases, and a certain period of time is set for display when the pulse number reaches the specified number, although the user's awareness of sand and dust can be improved, but When there is a lot of fine dust, the number of pulses is also high, resulting in the display of more dust than it actually exists, which is far from the actual feeling of the user.

如上所述，现有的灰尘显示装置的特性只能与具有某种程度的大小的灰尘相对应，对于包括细微灰尘在内的、粒径也各不相同的灰尘而言，存在着在实现与用户的实际感觉相符的灰尘显示、和提高保持着检测到的脏度的灰尘显示的可识别性之间不能实现两全的问题。As described above, the characteristics of the existing dust display device can only correspond to dust with a certain size, and there is a problem in realizing the dust with different particle sizes, including fine dust. There is a problem of not being able to achieve a balance between a dust display that matches the user's actual feeling and improved visibility of a dust display that maintains the detected degree of dirt.

发明内容Contents of the invention

为了解决现有技术中存在的上述问题，本发明的灰尘显示装置中设有：对通过吸尘通道的规定大小的灰尘进行检测的第1灰尘检测装置；通过所述吸尘通道的、与所述的规定大小不同的更大灰尘进行检测的第2灰尘检测装置；将所述第1灰尘检测装置检测出的第1灰尘检测信号中的灰尘信息保持规定的时间的第1保持装置；将所述第2灰尘检测装置检测出的第2灰尘检测信号中的灰尘信息保持规定的时间的第2保持装置；和根据所述第1保持装置保持的第1保持信号和所述第2保持装置保持的第2保持信号，对灰尘的有无或状态进行灰尘显示的灰尘显示装置。In order to solve the above problems in the prior art, the dust display device of the present invention is provided with: a first dust detection device for detecting dust of a specified size passing through the dust suction channel; The second dust detection device for detecting larger dust with different predetermined sizes; the first holding device for holding the dust information in the first dust detection signal detected by the first dust detection device for a predetermined time; a second holding means for holding the dust information in the second dust detection signal detected by the second dust detection means for a predetermined time; The dust display device that displays the presence or absence of dust or the state of dust with the second hold signal.

这样，不但对于不同大小的灰尘可按照每种灰尘大小进行检测，同时可在保持按照不同的灰尘设定的、与用户的实际感觉相符合的规定时间的情况下进行灰尘显示，从而能够确保对各种大小及种类的灰尘的易识别性，而且还可以使灰尘显示与用户的实际感觉象适应。In this way, not only can the dust of different sizes be detected according to each dust size, but at the same time, the dust display can be carried out while maintaining the specified time set according to different dusts and in line with the user's actual feeling, so as to ensure the correctness of the dust. The easy identification of various sizes and types of dust, but also the dust display can be adapted to the user's actual perception.

本发明产生的技术效果如下。本发明中的灰尘显示装置可以检测出一直到花粉等细微灰尘为止等的眼睛看不到的灰尘种类及灰尘量等状态，而且能够进行与用户的实际感觉相符的灰尘显示，从而能够提高灰尘显示的易识别性。The technical effects produced by the present invention are as follows. The dust display device in the present invention can detect the state of dust types and dust amounts invisible to the eyes until fine dust such as pollen, etc., and can perform dust display that matches the user's actual feeling, thereby improving the dust display performance. identifiability.

本发明具体实施方式概述如下。本发明的第1方案中的灰尘显示装置中设有：对通过吸尘通道的规定大小的灰尘进行检测的第1灰尘检测装置；通过所述吸尘通道的、与所述的规定大小不同的更大灰尘进行检测的第2灰尘检测装置；将所述第1灰尘检测装置检测出的第1灰尘检测信号中的灰尘信息保持规定的时间的第1保持装置；将所述第2灰尘检测装置检测出的第2灰尘检测信号中的灰尘信息保持规定的时间的第2保持装置；和根据所述第1保持装置保持的第1保持信号和所述第2保持装置保持的第2保持信号，对灰尘的有无或状态进行灰尘显示的灰尘显示装置。这样，就能够使灰尘显示保持按照每种灰尘设定的保持时间，能够进行与用户的实际感觉相符的灰尘显示，从而能够提高灰尘显示的易识别性。Specific embodiments of the present invention are summarized as follows. The dust display device in the first aspect of the present invention is provided with: a first dust detection device for detecting dust of a specified size passing through the dust suction passage; A second dust detection device for detecting larger dust; a first holding device for holding the dust information in the first dust detection signal detected by the first dust detection device for a predetermined time; a second holding means for holding dust information in the detected second dust detection signal for a predetermined time; and based on the first holding signal held by the first holding means and the second holding signal held by the second holding means, A dust display device that displays the presence or state of dust. In this way, the dust display can be maintained for the retention time set for each type of dust, and the dust display that matches the user's actual feeling can be performed, thereby improving the visibility of the dust display.

第2方案中的灰尘显示装置中包括：灰尘检测装置，所述灰尘检测装置包括：用于检测通过吸尘通道的灰尘的检测单元、和从所述检测单元的检测结果输出对于规定大小的灰尘作出反应的第1灰尘检测信号、以及对于与所述的规定大小不同的更大灰尘作出反应的第2灰尘检测信号的分类信号输出装置；将所述第1灰尘检测信号中的灰尘信息保持规定时间的第1保持装置；将所述第2灰尘检测信号中的灰尘信息保持规定时间的第2保持装置；和根据所述第1保持装置保持的第1保持信号和所述第2保持装置保持的第2保持信号，对灰尘的有无或状态进行灰尘显示的灰尘显示装置。这样，检测单元可以构成一个组件，同时能够使灰尘显示保持按照每种灰尘设定的保持时间，能够进行与用户的实际感觉相符的灰尘显示，从而能够提高灰尘显示的易识别性。The dust display device in the second aspect includes: a dust detection device, and the dust detection device includes: a detection unit for detecting dust passing through the dust suction channel, and outputting the dust of a specified size from the detection result of the detection unit A first dust detection signal that responds, and a classification signal output device that responds to a second dust detection signal that is larger than the specified size of dust; maintains the dust information in the first dust detection signal as specified a first holding means for time; a second holding means for holding the dust information in the second dust detection signal for a predetermined time; and a first holding signal held by the first holding means and the second holding means for holding The dust display device that displays the presence or absence of dust or the state of dust with the second hold signal. In this way, the detection unit can constitute a unit, and at the same time, the dust display can be maintained for the retention time set for each type of dust, and the dust display that matches the user's actual feeling can be performed, thereby improving the recognizability of the dust display.

第3方案为，第1或者第2方案中的第1保持装置和第2保持装置中设定的规定保持时间为不同的值。这样，通过进行保持操作，可以让用户识别出灰尘的大小。A third means is that the predetermined holding time set in the first holding means and the second holding means in the first or second means are different values. In this way, by performing the holding operation, the user can be allowed to recognize the size of the dust.

第4方案为，在第1或者第2方案中，当第1灰尘检测信号朝灰尘增加的方向变化时，第1保持装置则缩短第1保持时间。这样，在花粉等粒径小的尘埃减少时，可以通过保持操作维持灰尘显示的易识别性，而在尘埃增加时中，则可以在短时间内进行与灰尘量相适应的灰尘显示。A fourth means is that, in the first or second means, when the first dust detection signal changes in the direction of increasing dust, the first holding means shortens the first holding time. In this way, when the dust with a small particle size such as pollen decreases, the visibility of the dust display can be maintained by maintaining the operation, and when the dust increases, the dust display can be performed in a short time according to the amount of dust.

第5方案为，在第1或者第2方案中，在第2灰尘检测信号朝灰尘增加的方向变化时，第2保持装置则缩短第2保持时间。这样，在沙尘等粒径比较大的灰尘减少时，可以通过保持操作维持灰尘显示的易识别性，而在灰尘增加时，则可以在短时间内进行与灰尘量相适应的灰尘显示。A fifth means is that, in the first or second means, when the second dust detection signal changes in the direction of increasing dust, the second holding means shortens the second holding time. In this way, when the dust with a relatively large particle size such as sand decreases, the visibility of the dust display can be maintained by maintaining the operation, and when the dust increases, the dust display suitable for the amount of dust can be displayed in a short time.

第6方案为，第1或者第2方案中还包括将第1保持信号和第2保持信号加以比较、并将其中一方的保持信号加以输出的比较装置，所述灰尘显示装置根据所述比较装置输出的保持信号进行灰尘显示。这样，灰尘显示装置可以统一成一个，通过简单的构成就能实现。The sixth solution is that the first or second solution further includes a comparison device that compares the first holding signal and the second holding signal and outputs one of the holding signals, and the dust display device is based on the comparison device The output hold signal is displayed for dust. In this way, the dust display device can be integrated into one, which can be realized with a simple configuration.

第7方案为，第1或者第2方案中还包括将第1保持信号和第2保持信号加以比较、并将脏度多的一方的保持信号加以输出比较装置，所述灰尘显示装置根据所述比较装置的输出的保持信号进行灰尘显示。这样，灰尘显示装置用简单的构成就可以实现，同时能够与灰尘的大小等无关地、直到脏度消失为止保持灰尘显示。因此，不但可以提高用户对灰尘显示的易识别性，还可以提高对灰尘清除情况的识别度。According to a seventh aspect, the first or second aspect further includes means for comparing the first holding signal and the second holding signal, and outputting the holding signal of the dirtier side, and the dust display device according to the The hold signal output by the comparison device is used for dust display. In this way, the dust display device can be realized with a simple configuration, and at the same time, the dust display can be maintained until the degree of dirt disappears regardless of the size of the dust or the like. Therefore, not only the user's easy recognition of the dust display can be improved, but also the degree of recognition of the dust removal status can be improved.

第8方案为，第1或者第2方案中还包括：根据第1灰尘检测信号和第2灰尘检测信号的灰尘比例来确定第1保持时间和第2保持时间的第3保持装置。这样，通过将第1保持时间和第2保持时间设定成根据通过检测单元的灰尘的构成发生变化，能够根据灰尘构成进行与实际感觉相符的灰尘显示保持。In an eighth aspect, the first or second aspect further includes: a third holding device for determining the first holding time and the second holding time based on the dust ratio of the first dust detection signal and the second dust detection signal. In this way, by setting the first holding time and the second holding time to change according to the composition of the dust passing through the detection unit, it is possible to maintain a dust display that matches the actual feeling according to the dust composition.

第9方案为，第1或者第2方案中还包括根据第1灰尘检测信号和第2灰尘检测信号的灰尘比例来确定第1保持时间和第2保持时间的第3保持装置，且第1保持装置、第2保持装置或者第3保持装置根据第1灰尘检测信号或第2灰尘检测信号的灰尘量使保持时间发生变化。这样，通过根据灰尘量来设定保持时间，可以提高通过灰尘显示装置对灰尘量的易识别度。同时，通过将保持时间设定成灰尘越多保持时间就越长，可以使用户通过灰尘显示装置更加现实地感觉到灰尘量。The ninth plan is that the first or second plan also includes a third holding device for determining the first holding time and the second holding time according to the dust ratio of the first dust detection signal and the second dust detection signal, and the first holding The device, the second holding device or the third holding device changes the holding time according to the amount of dust in the first dust detection signal or the second dust detection signal. In this way, by setting the holding time according to the amount of dust, the visibility of the amount of dust by the dust display device can be improved. At the same time, by setting the holding time so that the more dust there is, the longer the holding time will be, so that the user can feel the amount of dust more realistically through the dust display device.

本发明的第10方案为设有第1或者第2方案中的灰尘显示装置的电动吸尘器。这样，电动吸尘器的用户能够更加容易地认识到各种大小的灰尘的数量及清除状况，不但可以提高吸尘作业的精度，而且还可以提高吸尘作业的效率。A tenth aspect of the present invention is an electric vacuum cleaner provided with the dust display device according to the first or second aspect. In this way, the user of the electric vacuum cleaner can more easily recognize the amount of dust of various sizes and the removal status, which not only improves the accuracy of the dust collection operation, but also improves the efficiency of the dust collection operation.

附图说明Description of drawings

图1为本发明实施例1中的电动吸尘器灰尘显示装置的控制电路方框图，Fig. 1 is the control circuit block diagram of the electric vacuum cleaner dust display device in theembodiment 1 of the present invention,

图2为灰尘通过该电动吸尘器灰尘显示装置中的受光单元时的示意图，Fig. 2 is a schematic diagram of dust passing through the light-receiving unit in the dust display device of the electric vacuum cleaner,

图3为该电动吸尘器灰尘显示装置的受光量变化示意图，Fig. 3 is a schematic diagram of the variation of the amount of light received by the dust display device of the electric vacuum cleaner,

图4为该电动吸尘器灰尘显示装置的保持时间示意图，Fig. 4 is a schematic diagram of the holding time of the dust display device of the electric vacuum cleaner,

图5为该电动吸尘器灰尘显示装置的另一种保持时间的示意图，Fig. 5 is a schematic diagram of another holding time of the dust display device of the electric vacuum cleaner,

图6为该电动吸尘器灰尘显示装置中的显示装置的构成示意图，Fig. 6 is a schematic diagram of the composition of the display device in the dust display device of the electric vacuum cleaner,

图7为本发明实施例2中的电动吸尘器灰尘显示装置的控制电路方框图，Fig. 7 is a block diagram of the control circuit of the dust display device of the electric vacuum cleaner inEmbodiment 2 of the present invention,

图8为该电动吸尘器灰尘显示装置的保持时间和比较装置输出之间的关系图，Fig. 8 is a relationship diagram between the holding time of the dust display device of the electric vacuum cleaner and the output of the comparison device,

图9为该电动吸尘器灰尘显示装置中的显示装置构成图，Fig. 9 is a structural diagram of the display device in the dust display device of the electric vacuum cleaner,

图10为本发明实施例3中的电动吸尘器灰尘显示装置的控制电路方框图，Fig. 10 is a block diagram of the control circuit of the dust display device of the electric vacuum cleaner inEmbodiment 3 of the present invention,

图11为现有的电动吸尘器的概略构成示意图，Fig. 11 is a schematic diagram showing the general structure of a conventional electric vacuum cleaner,

图12为现有电动吸尘器的灰尘检测单元框图，Fig. 12 is a block diagram of a dust detection unit of an existing electric vacuum cleaner,

图13为现有电动吸尘器的灰尘检测装置中的检测单元的截面图。13 is a cross-sectional view of a detection unit in a dust detection device of a conventional electric vacuum cleaner.

上述附图中，20为发光单元，21为受光单元，30为第1放大装置，31为第2放大装置，32为第1脉冲变换装置，33为第2脉冲变换装置，34为分类信号输出装置，35为第1灰尘检测装置，36为第2灰尘检测装置，37为第1保持装置，38为第2保持装置，40为显示控制装置，41为微电脑，50为比较装置，70为第3保持装置。In the above drawings, 20 is a light-emitting unit, 21 is a light-receiving unit, 30 is a first amplifying device, 31 is a second amplifying device, 32 is a first pulse conversion device, 33 is a second pulse conversion device, and 34 is a classification signal output device, 35 is the first dust detection device, 36 is the second dust detection device, 37 is the first holding device, 38 is the second holding device, 40 is a display control device, 41 is a microcomputer, 50 is a comparison device, 70 is asecond holding device 3 holding device.

具体实施方式Detailed ways

下面参照附图来对本发明的一些实施例进行详细说明。同时需要指出的是，本发明的技术范围不受这些实施例的限定。Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. At the same time, it should be pointed out that the technical scope of the present invention is not limited by these examples.

(实施例1)(Example 1)

下面参照图1～图6对本发明的第1实施例进行描述。其中，对于与上述的现有吸尘器中相同的构成部件，这里只标上了相同的符号，省略对其的重复描述。A first embodiment of the present invention will be described below with reference to FIGS. 1 to 6 . Wherein, for the components that are the same as those in the above-mentioned conventional vacuum cleaner, only the same symbols are attached here, and repeated descriptions thereof are omitted.

图1为本发明实施例1中的电动吸尘器灰尘显示装置的控制电路框图。FIG. 1 is a block diagram of a control circuit of a dust display device for an electric vacuum cleaner inEmbodiment 1 of the present invention.

图1中，20为用红外发光二极管等构成的发光单元，21为光敏管等构成的受光单元。当两者之间有灰尘通过时，就会输出与灰尘相对应的信号Vs。30为由运算放大器等构成的第1放大装置，对检测单元22输出的信号Vs用规定的第1放大倍率进行放大，该第1放大装置30具有放大和滤波功能，只输出具有规定的频率成分的信号。32为由比较器等构成的第1脉冲变换装置，将第1放大装置30输出的信号与第1基准电压进行比较，高于第1基准电压的话输出“高”信号，低于第1基准电压的话输出“低”信号。31为由运算放大器等构成的第2放大装置，对检测单元22输出的信号Vs用与第1放大倍率不同的、规定的第2放大倍率进行放大。第2放大装置31也具有放大和滤波功能，也只输出具有规定频率成分的信号。33为由比较器等构成的第2脉冲变换装置，将第2放大装置31输出的信号与第2基准电压进行比较，高于第2基准电压的话输出“高”信号，低于第2基准电压的话输出“低”信号。In Fig. 1, 20 is a light-emitting unit made of infrared light-emitting diodes and the like, and 21 is a light-receiving unit made of photosensitive tubes and the like. When dust passes between the two, a signal Vs corresponding to the dust will be output. 30 is a first amplifying device composed of an operational amplifier, etc., which amplifies the signal Vs output by thedetection unit 22 with a specified first amplification factor. Thefirst amplifying device 30 has amplification and filtering functions, and only outputs a signal with a specified frequency component. signal of. 32 is a first pulse conversion device composed of a comparator, etc., which compares the signal output by thefirst amplifying device 30 with the first reference voltage, and outputs a "high" signal if it is higher than the first reference voltage, and outputs a "high" signal if it is lower than the first reference voltage. If so, output a "low" signal. 31 is a second amplification device composed of an operational amplifier and the like, which amplifies the signal Vs output from thedetection unit 22 at a predetermined second amplification factor different from the first amplification factor. The second amplifying device 31 also has amplification and filtering functions, and also outputs only signals having predetermined frequency components. 33 is a second pulse conversion device composed of a comparator, etc., which compares the signal output by the second amplifying device 31 with the second reference voltage, and outputs a "high" signal if it is higher than the second reference voltage, and outputs a "high" signal if it is lower than the second reference voltage. If so, output a "low" signal.

检测单元22、第1放大装置30和第1脉冲变换装置32构成了第1灰尘检测装置35(图1中的粗虚线框)，第1脉冲变换装置32的输出被作为第1灰尘检测信号输出。另外，检测单元22、第2放大装置31和第2脉冲变换装置33构成了第2灰尘检测装置36(图1中的粗点划线框)，第2脉冲变换装置33的输出被作为第2灰尘检测信号输出。第2放大装置31的放大倍数被设定在可以检测出比直径为200μm左右的沙尘粒大的灰尘的放大程度上，而第1放大装置30的放大倍数则被设定在可以检测出从直径为20μm左右的花粉到第2放大装置31所检测的200μm的大小的灰尘的放大程度上。Thedetection unit 22, thefirst amplifying device 30 and the firstpulse conversion device 32 constitute the first dust detection device 35 (the thick dotted line frame in Fig. 1), and the output of the firstpulse conversion device 32 is output as the first dust detection signal . In addition, thedetection unit 22, the second amplification device 31 and the second pulse conversion device 33 constitute the second dust detection device 36 (the thick dotted line frame in Fig. 1), and the output of the second pulse conversion device 33 is taken as the second Dust detection signal output. The magnification of the second amplifying device 31 is set at the degree of magnification that can detect dust particles that are larger than sand particles with a diameter of about 200 μm, while the magnification of thefirst amplifying device 30 is set at a level that can detect dust from Pollen with a diameter of about 20 μm is amplified to dust with a size of 200 μm detected by the second amplifying device 31 .

在本实施例中，第1灰尘检测装置35和第2灰尘检测装置36的灰尘检测电路采用了共享检测单元22的构造，第1放大装置30、第1脉冲变换装置32、第2放大装置31和第2脉冲变换装置33一起构成了信号输出装置34。同时，从第1脉冲变换装置32和第2脉冲变换装置33分别输出第1灰尘检测信号和第2灰尘检测信号。In this embodiment, the dust detection circuits of the firstdust detection device 35 and the second dust detection device 36 adopt the structure of the shareddetection unit 22, and thefirst amplifying device 30, the firstpulse conversion device 32, and the second amplifying device 31 Together with the second pulse conversion means 33, the signal output means 34 is constituted. At the same time, a first dust detection signal and a second dust detection signal are output from the firstpulse conversion device 32 and the second pulse conversion device 33, respectively.

37为第1保持装置，将第1灰尘检测信号即来自第1脉冲变换装置32的脉冲数变换成穿过吸尘通道的灰尘量等级，再根据不同的等级附加上规定的保持时间t1a～t1d，输出第1保持信号。38为第2保持装置，将第2灰尘检测信号即来自第2脉冲变换装置33的脉冲数变换成通过吸尘通道的灰尘量等级，再根据不同的等级附加上规定的保持时间t2a～t2d，输出第2保持信号。37 is the first holding device, which converts the first dust detection signal, that is, the pulse number from the firstpulse conversion device 32, into the dust level passing through the dust suction channel, and then adds the specified holding time t1a~t1d according to different levels , output the first hold signal. 38 is the second holding device, which converts the second dust detection signal, that is, the pulse number from the second pulse conversion device 33, into the dust level through the dust suction channel, and then adds the prescribed holding time t2a～t2d according to different levels, The second hold signal is output.

40为对用发光二极管构成的显示装置11的显示图形进行控制的显示控制装置，显示控制装置40与显示装置11一起构成灰尘显示装置。40 is a display control device for controlling the display pattern of the display device 11 made of light emitting diodes, and the display control device 40 together with the display device 11 constitutes a dust display device.

13为用于驱动电动风机2的双向晶闸管，根据控制装置14输出的触发信号对供给至电动风机2的电源功率进行控制，控制装置14根据由操作单元4设定的供电量对电动风机2的操作进行控制。控制装置14、第1保持装置37、第2保持装置38和显示控制装置40均由微电脑41构成。13 is a bidirectional thyristor for driving theelectric blower 2, which controls the power supplied to theelectric blower 2 according to the trigger signal output by the control device 14, and the control device 14 controls the power supply of theelectric blower 2 according to the power supply amount set by theoperation unit 4. Operations are controlled. The control device 14 , the first holding device 37 , the second holding device 38 , and the display control device 40 are all constituted by a microcomputer 41 .

电动风机2、双向晶闸管13和微电脑41被设置在机体1内。发光单元20和受光单元21(检测单元22)、第1放大装置30、第2放大装置31、第1脉冲变换装置32和第2脉冲变换装置33与操作单元4和灰尘显示装置11一起设置在软管3中，更具体地说，设置在联结部12中。Theelectric blower 2 , the triac 13 and the microcomputer 41 are arranged in thebody 1 . Thelight emitting unit 20 and the light receiving unit 21 (detection unit 22), thefirst amplifying device 30, the second amplifying device 31, the firstpulse converting device 32 and the second pulse converting device 33 are arranged together with theoperating unit 4 and the dust display device 11. Thehose 3 is, more specifically, provided in thecoupling portion 12 .

下面对具有以上构成的灰尘显示装置以及具备该灰尘显示装置的电动吸尘器的操作情况进行描述。The operation of the dust display device having the above structure and the electric vacuum cleaner equipped with the dust display device will be described below.

在吸尘过程中，当吸尘通道内有灰尘流过时，从发光单元20发出的一部分光被灰尘挡住，受光单元21的受光量将会减少，输出电压Vs也会变小，这一输出电压Vs由第1放大装置30进行放大。第1放大装置30同时还具有滤波功能，其滤波功能由截止频率为fa1的高通滤波器及截止频率为fa2的低通滤波器构成的带通滤波器来实现，以特定的频带A(fa1～fa2)为中心进行放大。这里的频率fa1及fa2为从灰尘穿过检测单元22的速度算出的频率。During the cleaning process, when there is dust flowing through the dust suction channel, part of the light emitted from thelight emitting unit 20 will be blocked by the dust, the amount of light received by thelight receiving unit 21 will decrease, and the output voltage Vs will also become smaller. Vs is amplified by thefirst amplifying device 30 . Thefirst amplifying device 30 also has a filtering function at the same time, and its filtering function is realized by a band-pass filter composed of a high-pass filter with a cut-off frequency of fa1 and a low-pass filter with a cut-off frequency of fa2. fa2) as the center to zoom in. The frequencies fa1 and fa2 here are frequencies calculated from the speed at which dust passes through thedetection unit 22 .

同样，第2放大装置31中也具有滤波功能，对信号Vs以特定的频带B(fb1～fb2)为中心进行放大。Similarly, the second amplifying device 31 also has a filtering function, and amplifies the signal Vs around a specific frequency band B (fb1 to fb2).

fa1和fa2为主要检测20μm左右的花粉的频率，fb1～fb2为用于检测200μm或更大的沙尘等的频率。fa1 and fa2 are frequencies for mainly detecting pollen of about 20 μm, and fb1 to fb2 are frequencies for detecting sand dust of 200 μm or larger.

下面对灰尘通过检测单元22时的信号Vs的变化情况进行描述。假设受光单元21的感光面形状为圆形，当灰尘从正对着设置的发光单元20和受光单元21分别位于其上底面和下底面上的圆柱(下面称为“区域R”)中心部通过的时候，也是受光单元21的受光量为下降最多的时候。图2中示出了灰尘通过区域R时的情形，图3则示出了受光单元21的受光量变化。如图2、3中所示，灰尘通过检测单元22的过程可分为以下的5个阶段，即，1)灰尘通过前、2)灰尘区域R的外壁相交时(将要进入区域R中时)、3)灰尘已经进入到区域R中时、4)灰尘与区域R的外壁相交时(将要离开区域R时)、和5)灰尘已经通过时。此时的受光单元21的受光量变化因灰尘的大小和通过检测单元22的速度不同而不同，灰尘越大其变化量也越大，其变化时间也越长；同时，通过速度越快，变化时间也就变得越短。第1放大装置30和第2放大装置31选择出上面的第2)阶段时的受光量变化，对这一受光量变化进行滤波、放大。The change of the signal Vs when the dust passes through thedetection unit 22 will be described below. Assuming that the light-sensing surface of the light-receivingunit 21 has a circular shape, when the dust passes through the center of the cylinder (hereinafter referred to as "region R") on the upper bottom surface and the lower bottom surface of the light-emittingunit 20 and the light-receivingunit 21, which are directly opposite to each other, pass through , it is also the time when the amount of light received by thelight receiving unit 21 drops the most. FIG. 2 shows the situation when the dust passes through the region R, and FIG. 3 shows the change of the amount of light received by thelight receiving unit 21 . As shown in Figures 2 and 3, the process of dust passing through thedetection unit 22 can be divided into the following 5 stages, namely, 1) before the dust passes through, 2) when the outer walls of the dust region R intersect (when it is about to enter the region R) , 3) when the dust has entered into the region R, 4) when the dust intersects the outer wall of the region R (when it is about to leave the region R), and 5) when the dust has passed. The amount of light received by thelight receiving unit 21 at this time changes because of the size of the dust and the speed at which it passes through thedetection unit 22. The greater the dust, the greater the amount of change, and the longer the change time; Time also becomes shorter. Thefirst amplifying device 30 and the second amplifying device 31 select the change in the amount of light received in the above stage 2), and filter and amplify the change in the amount of light received.

这里，设发光单元20和受光单元21的直径均为Y，要检测的灰尘为直径为X的球体，且灰尘以速度Z进入区域R的中心时，第2)阶段的持续时间T如下：在灰尘很小即X≤Y时，T＝X/Z，在灰尘很大即X≥Y时，T＝Y/Z。Here, assuming that the diameters of the light-emittingunit 20 and the light-receivingunit 21 are both Y, the dust to be detected is a sphere with a diameter of X, and when the dust enters the center of the region R at a speed Z, the duration T of the second) stage is as follows: When the dust is very small, that is, X≤Y, T=X/Z, and when the dust is very large, that is, X≥Y, T=Y/Z.

当受光单元21的直径Y＝3mm时，在希望通过第2放大装置31检测出比直径为200μm左右的砂粒大的灰尘，由于要检测的灰尘大小X≥200When the diameter Y=3mm of thelight receiving unit 21, it is desired to detect dust larger than sand grains with a diameter of about 200 μm by the second amplifying device 31, because the dust size X≥200 to be detected

μm，则T为：200μm/Z≤T≤3mm/Z，因此将通过速度Z的范围设定好之后，T以及与之相适应的频率fb1、fb2也就能确定下来。μm, then T is: 200μm/Z≤T≤3mm/Z, so after setting the range of passing speed Z, T and the corresponding frequencies fb1 and fb2 can also be determined.

第1放大装置30中的频率fa1、fa2也一样，可以设定成能够检测出粒径为20μm左右的花粉等细微灰尘。Similarly, the frequencies fa1 and fa2 in thefirst amplifying device 30 can be set so that fine dust such as pollen having a particle diameter of about 20 μm can be detected.

由于被第1放大装置30放大后的相当于20μm的检测信号送入到第1脉冲变换装置32后，第1脉冲变换装置32将其与第1基准信号进行比较，变换成脉冲信号并加以输出，因此，第1灰尘检测信号将成为只含有与花粉等相当的20μm灰尘(下面称为“细微灰尘”)信息的信号。同样，被第2放大装置31放大后的沙尘等200μm以上的颗粒检测信号被输入到第2脉冲变换装置33中后，第2脉冲变换装置33将其与第2基准信号进行比较，变换成脉冲信号并加以输出，故第2灰尘检测信号也将成为只包含沙尘等200μm以上的灰尘(下面称为“沙尘”)信息的信号。Since the detection signal corresponding to 20 μm amplified by thefirst amplifying device 30 is sent to the firstpulse conversion device 32, the firstpulse conversion device 32 compares it with the first reference signal, converts it into a pulse signal and outputs it. Therefore, the first dust detection signal will be a signal containing only the information of 20 μm dust (hereinafter referred to as "fine dust") corresponding to pollen or the like. Similarly, after the particle detection signal of 200 μm or more amplified by the second amplifying device 31 is input into the second pulse converting device 33, the second pulse converting device 33 compares it with the second reference signal and converts it into The pulse signal is output, so the second dust detection signal will also become a signal including only information on dust (hereinafter referred to as "sand dust") such as sand and dust with a diameter of 200 μm or more.

下面的表1中示出了第1灰尘检测信号、第2灰尘检测信号的脉冲数和脏度等级之间的对应关系的一个例子。一般来说，将细微灰尘的数量和沙尘的数量相比的话，细微灰尘的数量比较多。例如，用地面吸头8在地面上来回吸一次的话，在穿过检测单元22的灰尘中细微灰尘比较多。为此，在设定脏度等级的判定值的时，即便脏度等级相同，细微灰尘的脉冲数要设定得多一些。这样，在实际的吸尘操作中，就不会发生沙尘引起的脏度和细微灰尘引起的脏度的灰尘显示之间出现很大的差异，避免让用户感到困惑。Table 1 below shows an example of the correspondence between the number of pulses of the first dust detection signal and the second dust detection signal, and the degree of dirtiness. Generally, when the amount of fine dust is compared with the amount of sand dust, the amount of fine dust is relatively large. For example, if thefloor suction head 8 is used to suck back and forth on the ground once, there will be more fine dust in the dust passing through thedetection unit 22 . Therefore, when setting the judgment value of the degree of dirtiness, even if the degree of dirtiness is the same, the number of pulses of fine dust should be set a little more. In this way, in the actual vacuuming operation, a large difference between the dust display of the degree of dirt caused by sand dust and the degree of dirt caused by fine dust does not occur, preventing the user from being confused.

[表1]灰尘量   判定值  第1灰尘检测信号脉冲数  第2灰尘检测信号脉冲数   0  0～5  0～1   1  6～12  2～4   2  13～25  5～7   3  26～40  8～10   4  41～  11～[Table 1] amount of dust Judgment value Number of 1st dust detection signal pulses 2nd dust detectionsignal pulse number 0 0～5 0～1 1 6～12 2～4 2 13～25 5～7 3 26～40 8～10 4 41～ 11～

但是，在通常情况下，在地面吸头8与地面等吸尘对象物发生接触、将灰尘吸起的场合下，从灰尘开始通过检测单元22到完成为止的时间来看，由于细微灰尘和沙尘中数量较多的细微灰尘的时间较长，因此，即使想把细微灰尘和沙尘的脏度等级组合在一起，但从第2灰尘检测信号维持脏度等级的时间和第1灰尘检测信号维持相同脏度等级的时间来看，第2灰尘检测信号的时间实在太短。However, under normal circumstances, when thefloor suction head 8 comes into contact with the dust collection objects such as the floor, and the dust is sucked up, from the time when the dust begins to pass through thedetection unit 22 to the completion, due to fine dust and sand The amount of fine dust in the dust takes a long time. Therefore, even if you want to combine the dirt levels of fine dust and sand dust, the time to maintain the dirt level from the second dust detection signal is the same as the first dust detection signal. In terms of the time for maintaining the same dirt level, the time for the second dust detection signal is too short.

另外，就是对第1灰尘检测信号而言，在细微灰尘的数量非常稀少的情况下，从细微灰尘开始通过检测单元22到完成为止的时间也非常短。In addition, even for the first dust detection signal, when the amount of fine dust is very small, the time from when the fine dust starts to pass through thedetection unit 22 to when it finishes passing is also very short.

如果与上述的很短的时间同步地显示出灰尘状态的话，不但存在用户错过看到检测到微少的细微灰尘及沙尘的显示情况的可能性，而且如果脏度等级以比方说0.1秒的周期频繁变化的话，通过显示要传递的信息也不能被正确地识别出来。If the dust state is displayed synchronously with the above-mentioned very short time, not only there is a possibility that the user misses seeing the display of the detection of minute fine dust and sand, If it changes frequently, the information to be conveyed cannot be recognized correctly by displaying it.

因此，第1保持装置37中进行如下的操作，即，对于每隔0.1秒由第1脉冲变换装置32送来的脉冲数(第1灰尘检测信号)，先以表1中所示的脉冲数和脏度等级的关系为判断基准，对细微灰尘量用脏度等级0～脏度等级4这5个等级来进行分级判断；此外，在从等级4变到3、从等级3变到2、从等级2变到1、和从等级1变到0时，再附加上如表2中所示的不同的保持时间。同样，第2保持装置38进行的操作如下，对于每隔0.1秒由第2脉冲变换装置33送出的脉冲数(第2灰尘检测信号)，也是也根据表1中所示的判断基准对沙尘量用脏度等级0～脏度等级4这5个等级进行分级判断；此外，在从等级4变至3、从等级3变至2、从等级2变至1、从等级1变至0，分别如表2中所示的那样附加上不同的保持时间。Therefore, the following operation is performed in the first holding device 37, that is, the number of pulses (the first dust detection signal) sent by the firstpulse conversion device 32 every 0.1 second is converted to the number of pulses shown in Table 1. The relationship with the degree of dirtiness is the criterion for judging the amount of fine dust with five grades ofdirtiness grade 0 to dirtinessgrade 4; in addition, when changing fromgrade 4 to 3, fromgrade 3 to 2, When changing fromlevel 2 to 1, and fromlevel 1 to 0, different hold times as shown in Table 2 are added. Equally, the operation that the 2nd holding device 38 carries out is as follows, for the pulse number (the 2nd dust detection signal) that is sent by the 2nd pulse conversion device 33 every 0.1 second, also is also according to the judging standard shown in Table 1 to the sand dust The quantity is graded and judged by the five levels ofdirtiness level 0 todirtiness level 4; in addition, when changing fromlevel 4 to 3, fromlevel 3 to 2, fromlevel 2 to 1, and fromlevel 1 to 0, Different holding times are added as shown in Table 2, respectively.

[表2]   判定值  第1保持信号的保持时间  第2保持信号的保持时间   等级4→3   t1a   0.5秒   t2a   0.8秒   等级3→2   t1b   0.5秒   t2b   0.8秒   等级2→1   t1c   0.8秒   t2c   1.0秒   等级1→0   t1d   1.0秒   t2d   1.5秒[Table 2] Judgment value Hold time of the 1st hold signal Hold time of the 2ndhold signal Level 4 → 3 t1a 0.5 seconds t2a 0.8seconds Level 3 → 2 t1b 0.5 seconds t2b 0.8seconds Level 2 → 1 t1c 0.8 seconds t2c 1.0seconds Level 1 → 0 t1d 1.0 seconds t2d 1.5 seconds

例如，当如图4中所示的脉冲信号作为第1灰尘检测信号输入时，在0.1秒的期间结束的时刻，第1保持装置37将脏度等级判定为等级4；之后，即使没有脉冲输入，也如表2中所示的那样，输出脏度等级在0.5秒的期间内保持住第4级的第1保持信号。在0.5秒之后，脏度等级从等级4降至脏度等级3，再经过0.5秒之后，降至脏度等级2，直至最后到达脏度等级0，如此反复地进行脏度等级和保持时间的切换。For example, when the pulse signal as shown in Figure 4 is input as the first dust detection signal, at the moment when the period of 0.1 second ends, the first holding device 37 judges the degree of dirtiness aslevel 4; after that, even if there is no pulse input , also as shown in Table 2, output the first hold signal that the dirtiness level remains atlevel 4 within a period of 0.5 seconds. After 0.5 seconds, the dirty level is reduced fromlevel 4 todirty level 3, and after another 0.5 second, it is reduced todirty level 2, until finally reachingdirty level 0, and the dirty level and holding time are repeated. switch.

第1保持装置37虽然在脏度下降的方向上按照如表2中所示的保持时间进行保持，但是在脏度增加的方向上，则在不设置保持时间(即为0秒)的状态下对脏度等级进行追随。Though the first holding device 37 holds according to the holding time as shown in Table 2 in the direction of dirt degree descending, in the direction of dirt degree increasing, then in the state of not setting the holding time (being 0 second) Follow the dirtiness level.

如图5(后半段)中所示，在脉冲没有发生、且在脏度等级1上进行保持操作的时候，如有24个脉冲的脉冲信号输入，脏度等级即根据表1被设定为脏度等级2；之后，如果不再有脉冲发生的话，则先保持脏度等级2的保持时间即1秒间，然后降低至脏度等级1，然后再保持1.5秒，最后到达脏度等级0。另外，在比方说进行等级3的保持操作的过程中，即使又有10个脉冲(相当于脏度等级1)输入，由于其等级比保持操作中的等级低，故会被忽视，继续进行保持操作。As shown in Figure 5 (second half), when the pulse does not occur and the maintenance operation is performed on thedirty level 1, if there are 24 pulses of pulse signal input, the dirty level is set according to Table 1 It isdirty level 2; after that, if there is no more pulse, it will first maintain the holding time ofdirty level 2, which is 1 second, then reduce todirty level 1, then keep it for 1.5 seconds, and finally reach thedirty level 0. In addition, during the hold operation oflevel 3, for example, even if 10 more pulses (equivalent to dirt level 1) are input, since the level is lower than the level in the hold operation, it will be ignored and the hold will continue. operate.

如上所述，在0.1秒的间隔中如果没有脉冲发生、或者在保持操作的进行过程中发生的脉冲数为正被保持着的等级之下的脉冲数，则继续执行保持操作，直至脏度等级为0；如果发生了相当于等级更高的脏度等级的脉冲数，则立刻追随新的脏度等级，输出新的第1保持信号。As described above, if no pulses occur in 0.1 second intervals, or if the number of pulses occurring during a hold operation is below the level being held, the hold operation continues until the dirty level is 0; if the number of pulses corresponding to a higher level of dirtiness occurs, it will immediately follow the new level of dirtiness and output a new first hold signal.

第2保持装置38执行与第1保持装置37相同的操作，即根据表1中所示的脏度等级判断脉冲数先判断出脏度等级，再根据表2确定各脏度等级的保持时间输出第2保持信号。The second holding device 38 performs the same operation as the first holding device 37, that is, first judges the dirty level according to the number of dirty level judgment pulses shown in Table 1, and then determines the holding time output of each dirty level according to Table 2 2nd hold signal.

图6中示出了显示装置11的构成。如图6中所示，显示装置11中包括：用于显示出与第2保持装置38输出的第2保持信号相对应的沙尘脏度的沙尘等级1显示段51、沙尘等级2显示段52、沙尘等级3显示段53、和沙尘等级4显示段54；以及用于显示出与第1保持装置37输出的第1保持信号相对应的细微灰尘脏度的细尘等级1显示段55、细尘等级2显示段56、细尘等级3显示段57、和细尘等级4显示段58。这里的各个显示等级与脏度等级相对应。显示控制装置40对显示装置11进行这样的控制，如第1保持信号为比方说脏度等级3，则使细尘等级1显示段55～细尘等级3显示段57发光，而让细尘等级4显示段58熄灭，亦即只让与第1保持信号的脏度等级之下的等级对应的显示段发光。另外，在脏度等级0为时则全部熄灭。对于与第2保持信号相对应的沙尘等级1显示段51～沙尘等级4显示段54，也进行同样的控制。The configuration of the display device 11 is shown in FIG. 6 . As shown in Figure 6, the display device 11 includes: asand dust level 1 display section 51 and asand dust level 2 display section 51 for displaying the dust dirt level corresponding to the second holding signal output by the second holding device 38. Segment 52,dust level 3 display segment 53, andsand level 4 display segment 54; andfine dust level 1 display for showing the degree of fine dust dirt corresponding to the first holding signal output by the first holding device 37 Segment 55 ,fine dust level 2 display segment 56 ,fine dust level 3 display segment 57 , andfine dust level 4 display segment 58 . The individual display levels here correspond to the degree of dirtiness. The display control device 40 controls the display device 11 in such a way that if the first holding signal is, for example, the degree ofdirtiness level 3, then thefine dust level 1 display segment 55 to thefine dust level 3 display segment 57 are illuminated, and the fine dust level is displayed. The display segments 58 are extinguished, ie only the display segments corresponding to levels below the dirtiness level of the first hold signal are illuminated. In addition, when the dirt level is 0, all lights are off. The same control is performed on thedust level 1 display segment 51 to thesand dust level 4 display segment 54 corresponding to the second hold signal.

通过象上面所述的那样在第1灰尘检测信号及第2灰尘检测信号上附加上保持时间，并根据灰尘的种类分别显示出脏度等级，就可以使脏度等级的显示保持稳定。此外，用户也能有足够的时间正确地识别出显示信息，从而可以提高显示的可识别性。By adding the holding time to the first dust detection signal and the second dust detection signal as described above, and displaying the degree of dirtiness according to the type of dust, the display of the degree of dirtiness can be stabilized. In addition, the user can also have enough time to correctly recognize the displayed information, so that the recognizability of the display can be improved.

另外，表2中之所以对于相同的脏度等级的第1保持信号和第2保持信号设置了不同的保持时间，是基于这样的考虑，即，通过将细尘等级1显示段55～细尘等级4显示段58、和沙尘等级1显示段51～沙尘等级4显示段54的显示切换间隔设定成不同，用户只通过显示的切换状况就可以识别是哪一个显示。相反，如果用户对于沙尘和细微灰尘的显示切换间隔的不同感到别扭的话，则可以对表2中所示的各个脏度等级的保持时间进行调整，使从灰尘通过检测单元22时的第1保持信号和第2保持信号输出的各个脏度等级信号的保持时间相同，这样可以实现相同的切换间隔。In addition, the reason why different holding times are set for the first holding signal and the second holding signal of the same dirt level in Table 2 is based on such considerations, that is, by displaying thefine dust level 1 segment 55 to fine dust The display switching intervals of thelevel 4 display segment 58 and thesand dust level 1 display segment 51 to thesand dust level 4 display segment 54 are set differently, and the user can recognize which display is displayed only by the switching status of the display. On the contrary, if the user feels uncomfortable about the difference between the display switching intervals of dust and fine dust, the retention time of each dirt level shown in Table 2 can be adjusted so that the dust passes through thedetection unit 22 at the first time. The holding time of each dirt level signal output by the holding signal and the second holding signal is the same, so that the same switching interval can be realized.

另外，在表2中，虽然脏度等级越高的话保持时间就越短，但是由于被控制成分阶段地降低到脏度0，因此脏度高的话，合计保持时间也就变长，其结果是，脏度越高，保持时间也就越长。这样，如果电动吸尘器的用户在脏度等级变到0之前一直进行吸尘的话，就可以与灰尘的大小及种类无关地、只通过与其量相对应的时间的作业就能将灰尘清除掉，从而可以提高吸尘作业的效率。In addition, in Table 2, the higher the degree of dirtiness, the shorter the holding time is, but since the controlled component gradually decreases to the dirtiness level of 0, the total holding time becomes longer when the dirtiness level is high, and the result is , the higher the degree of dirtiness, the longer the retention time. In this way, if the user of the electric vacuum cleaner continues vacuuming until the dirtiness level becomes 0, the dust can be removed by only working for a time corresponding to the amount regardless of the size and type of the dust, thereby It can improve the efficiency of vacuuming work.

(实施例2)(Example 2)

下面通过图7～图9对于本发明的第2实施例进行描述。其中，对于与前面所述的现有吸尘器中相同的构成部件，这里只标上了相同的符号，省略对其的重复描述。The second embodiment of the present invention will be described below with reference to FIGS. 7 to 9 . Wherein, for the components that are the same as those in the aforementioned conventional vacuum cleaner, only the same symbols are marked here, and repeated descriptions thereof are omitted.

图7为本发明实施例2中的电动吸尘器灰尘显示装置的控制电路框图。与实施例1中不同之处在于设置了输出比较装置50，该比较装置50将第1保持装置37和第2保持装置38输出的第1保持信号和第2保持信号加以比较后，输出一个统一的保持信号。Fig. 7 is a block diagram of the control circuit of the dust display device of the electric vacuum cleaner in the second embodiment of the present invention. The difference fromEmbodiment 1 is that an output comparison device 50 is provided. After the comparison device 50 compares the first holding signal and the second holding signal output by the first holding device 37 and the second holding device 38, it outputs a unified hold signal.

图9中示出了本发明的实施例2中的显示装置11的构成，沙尘和细微灰尘状况统合后由一个发光二极管显示器件61来显示。FIG. 9 shows the composition of the display device 11 inEmbodiment 2 of the present invention, and the conditions of dust and fine dust are displayed by a light-emitting diode display device 61 after integration.

图8中示出了第1保持装置37输出的第1保持信号、第2保持装置38输出的第2保持信号、和比较装置50的输出信号之间的关系的一个例子。FIG. 8 shows an example of the relationship between the first hold signal output by the first hold means 37 , the second hold signal output by the second hold means 38 , and the output signal of the comparison means 50 .

灰尘通过检测单元22时的第1保持信号和第2保持信号与实施例1中相同。第1保持信号和第2保持信号被输入到比较装置50中，由比较装置50对哪一个的脏度等级比较高进行判断，并将较高的一方的等级作为统一等级加以输出。在图8中所示的比较装置输出信号中，前半段输出的是第1保持信号，后半段输出的是第2保持信号。The first hold signal and the second hold signal when dust passes through thedetection unit 22 are the same as those in the first embodiment. The first hold signal and the second hold signal are input to the comparison device 50, and the comparison device 50 judges which one has a higher dirtiness level, and outputs the higher level as a unified level. In the output signal of the comparator shown in FIG. 8 , the output signal in the first half is the first hold signal, and the output in the second half is the second hold signal.

灰尘显示控制装置40根据比较装置50的输出信号进行以下的控制，即，如果统一等级为等级1～等级4，则使发光二极管显示器61发光，如果为等级0，则使发光二极管显示器61熄灭。The dust display control device 40 performs the following control according to the output signal of the comparison device 50, that is, if the unified level islevel 1 tolevel 4, the LED display 61 is turned on, and if the level is 0, the LED display 61 is turned off.

采用这一构成之后，无需将沙尘和细微灰尘分开，显示装置11的构成也可以简化。同时，用户也能更容易判断出灰尘是否已经通过吸尘操作被清除掉。With this configuration, it is not necessary to separate sand and fine dust, and the configuration of the display device 11 can be simplified. At the same time, the user can more easily judge whether the dust has been removed by vacuuming.

另外，虽然本实施例中的显示装置11只用一个发光二极管61来构成，但是很显然，如果希望设置与统一等级的数量相对应的发光二极管来分等级地进行显示的话，通过简单的构成就能实现。In addition, although the display device 11 in the present embodiment is constituted by only one light-emitting diode 61, obviously, if it is desired to arrange light-emitting diodes corresponding to the number of uniform levels to display in a hierarchical manner, it can be achieved through a simple structure. can achieve.

(实施例3)(Example 3)

下面使用图10对本发明的第3实施例进行描述。其中，对于与前面的现有吸尘器中相同的构成部件，这里只标上了相同的符号，省略对其进行详细描述。Next, a third embodiment of the present invention will be described using FIG. 10 . Wherein, for the same components as those in the previous existing vacuum cleaner, only the same symbols are attached here, and the detailed description thereof is omitted.

图10为本发明实施例3中的电动吸尘器灰尘显示装置的控制框图，实施例3与实施例1中的不同点在于设置了第3保持装置70，第1灰尘检测信号和第2灰尘检测信号输入该第3保持装置70中，由第3保持装置70根据这2个信号输出与第1灰尘检测信号相对应的第1保持信号、和与第2灰尘检测信号相对应的第2保持信号。Fig. 10 is a control block diagram of the dust display device of an electric vacuum cleaner inEmbodiment 3 of the present invention. The difference betweenEmbodiment 3 andEmbodiment 1 is that athird holding device 70 is provided, the first dust detection signal and the second dust detection signal It is input to thethird holding device 70, and thethird holding device 70 outputs a first holding signal corresponding to the first dust detection signal and a second holding signal corresponding to the second dust detection signal based on these two signals.

第3保持装置70先根据第1灰尘检测信号产生的脉冲数和第2灰尘检测信号产生的脉冲数通过等级0～4这5个阶段判断出各自的脏度等级，再根据如表3中所示的第1灰尘检测信号的脏度等级和第2灰尘检测信号的脏度等级的组合情况，判断属于模式1到模式5这5个模式中的哪一个。模式1为细微灰尘的脏度的比例比较高的模式，模式5为沙尘脏度的比例比较高的模式，而模式2～模式4则被设定成比例在模式1和模式5之间逐渐发生变化的模式。Thethird holding device 70 firstly judges the respective dirtiness grades according to the pulse numbers generated by the first dust detection signal and the pulse number generated by the second dust detection signal through the five stages ofgrades 0 to 4, and then according to the levels shown in Table 3 According to the combination of the dirt level of the first dust detection signal and the dirt level of the second dust detection signal shown, it is judged which of the five modes ofmode 1 tomode 5 belongs to.Mode 1 is a mode in which the proportion of fine dust is relatively high,mode 5 is a mode in which the proportion of sand and dust is relatively high, andmodes 2 to 4 are set so that the proportion gradually changes betweenmode 1 andmode 5. The pattern of changes.

[表3]   第2灰尘检测信号(脏度等级)  0  1  2  3  4第一灰脏尘度检等测级信)号   0  -  模式5  模式5  模式5  模式5   1  模式1  模式3  模式4  模式5  模式52模式1模式2模式3模式4模式43模式1模式1模式2模式3模式4   4  模式1  模式1  模式2  模式2  模式3[table 3] 2nd dust detection signal (dirt level) 0 1 2 3 4 No. 1 Dust Level Detection Level Signal) 0 -mode 5mode 5mode 5mode 5 1mode 1mode 3mode 4mode 5mode 5 2mode 1mode 2mode 3mode 4mode 4 3mode 1mode 1mode 2mode 3mode 4 4mode 1mode 1mode 2mode 2mode 3

例如，在吸尘对象物为地毯的时候，由于沙尘比细微灰尘重量重，且具有落入到地毯的网眼深处的特性，故需要进行比细微灰尘更加仔细的吸尘。For example, when the object to be vacuumed is a carpet, since sand dust is heavier than fine dust and has a characteristic of falling into the depth of the mesh of the carpet, it needs to be vacuumed more carefully than fine dust.

[表4]   脏度1↓脏度0   脏度2↓脏度1   脏度3↓脏度2   脏度4↓脏度3模式1   第1保持信号的保持时间   1.0秒   1.0秒   1.5秒   2.0秒   第2保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒模式2   第1保持信号的保持时间   0.8秒   0.8秒   1.0秒   1.5秒   第2保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒模式3   第1保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒   第2保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒模式4   第1保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒   第2保持信号的保持时间   0.8秒   0.8秒   1.0秒   1.5秒模式5   第1保持信号的保持时间   0.5秒   0.5秒   0.8秒   1.0秒   第2保持信号的保持时间   1.0秒   1.0秒   1.5秒   2.0秒[Table 4]Dirty degree 1↓Dirty degree 0Dirty degree 2↓Dirty degree 1Dirty degree 3↓Dirty degree 2Dirty degree 4↓Dirty degree 3mode 1 Hold time of the 1st hold signal 1.0 seconds 1.0 seconds 1.5 seconds 2.0 seconds Hold time of the 2nd hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0seconds mode 2 Hold time of the 1st hold signal 0.8 seconds 0.8 seconds 1.0 seconds 1.5 seconds Hold time of the 2nd hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0seconds mode 3 Hold time of the 1st hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0 seconds Hold time of the 2nd hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0seconds mode 4 Hold time of the 1st hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0 seconds Hold time of the 2nd hold signal 0.8 seconds 0.8 seconds 1.0 seconds 1.5seconds mode 5 Hold time of the 1st hold signal 0.5 seconds 0.5 seconds 0.8 seconds 1.0 seconds Hold time of the 2nd hold signal 1.0 seconds 1.0 seconds 1.5 seconds 2.0 seconds

表4中示出了从模式1到模式5的保持时间设定情况的一例，其中，越是接近模式5，亦即沙尘的比率越是增加，第2保持信号的保持时间被设定得越长。这样一来，不但可以进行与灰尘的构成相对应的保持操作，同时由于用户一般在显示装置11的显示熄灭之前一直进行吸尘操作，从而能够无意识地用与灰尘的构成相适应的最佳吸尘时间将灰尘清除掉。Table 4 shows an example of the holding time setting frommode 1 tomode 5, wherein the closer tomode 5, that is, the more the ratio of sand and dust increases, the holding time of the second holding signal is set to longer. In this way, not only can the maintenance operation corresponding to the composition of the dust be performed, but at the same time, since the user generally performs the vacuuming operation until the display on the display device 11 goes out, the optimal vacuuming operation suitable for the composition of the dust can be unconsciously used. Dust time to remove the dust.

另外，虽然在实施例1至实施例3中是通过第1灰尘检测装置和第2灰尘检测装置或者说第1灰尘检测信号和第2灰尘检测信号来判断灰尘状况并进行灰尘显示的，但是，从对于各种大小及种类的灰尘在确保易识别度的同时、进行能符合用户的实际感觉的适当的灰尘显示这一目的也能看出，也可以不限于上述的2个种类。比方说，也可以根据希望进行灰尘显示的灰尘种类及粒径将灰尘检测装置或灰尘检测信号的数量设定为多个，以提高灰尘状态的判断精度。In addition, although the first dust detection device and the second dust detection device or the first dust detection signal and the second dust detection signal are used to judge the dust status and display the dust inEmbodiment 1 toEmbodiment 3, but, It can also be seen from the purpose of performing an appropriate dust display that matches the user's actual feeling while ensuring easy recognition of dust of various sizes and types, and the dust does not need to be limited to the above-mentioned two types. For example, it is also possible to set a plurality of dust detection devices or dust detection signals according to the type and particle size of the dust desired to be displayed, so as to improve the judgment accuracy of the dust state.

综上所述，本发明中的灰尘显示装置可以检测出一直到花粉等细微灰尘为止等的眼睛看不到的灰尘种类及灰尘量等状态，并使用户能以与实际感觉相符的形态通过灰尘显示装置加以识别，从而能高效率地进行与其环境及状况相适应的吸尘操作。本发明还可以适用在通过过滤器件对含有灰尘的气流进行过滤的机器、设备中。To sum up, the dust display device in the present invention can detect the state of the dust type and the amount of dust that are invisible to the eyes, such as fine dust such as pollen, and allow the user to pass through the dust in a form that matches the actual feeling. The display device is identified, so that the dust collection operation suitable for its environment and conditions can be efficiently performed. The present invention can also be applied to machines and equipment for filtering dust-containing airflow through filter elements.

Claims (10)

1. dust display unit is characterized in that comprising:

The 1st dust detection that the dust of the prescribed level by dust absorption passage is detected;

To the 2nd dust detection that detects by described dust absorption passage, different bigger dust with described prescribed level;

The 1st holding device that dust information in detected the 1st dust detection signal of described the 1st dust detection is kept official hour;

The 2nd holding device that dust information in detected the 2nd dust detection signal of described the 2nd dust detection is kept official hour; With

The 2nd inhibit signal that the 1st inhibit signal that keeps according to described the 1st holding device and described the 2nd holding device keep, to dust have or not or state carries out the dust display unit that dust shows.

2. dust display unit is characterized in that comprising:

Dust detection, described dust detection comprises: be used to detect the detecting unit by the dust of dust absorption passage; The category signal output device of the 2nd dust detection signal of reacting with the 1st dust detection signal of reacting for the dust of prescribed level and for the bigger dust different with described prescribed level from the output of the testing result of described detecting unit;

The 1st holding device that dust information in described the 1st dust detection signal is kept the stipulated time;

The 2nd holding device that dust information in described the 2nd dust detection signal is kept the stipulated time; With

The 2nd inhibit signal that the 1st inhibit signal that keeps according to described the 1st holding device and described the 2nd holding device keep, to dust have or not or state carries out the dust display unit that dust shows.

3. the dust display unit described in claim 1 or 2 is characterized in that: the regulation retention time of setting in described the 1st holding device and the 2nd holding device is different value.

4. the dust display unit described in claim 1 or 2 is characterized in that: when the direction that increases towards dust at the 1st dust detection signal changed, the 1st holding device then shortened for the 1st retention time.

5. the dust display unit described in claim 1 or 2 is characterized in that: when the direction that increases towards dust at the 2nd dust detection signal changed, the 2nd holding device then shortened for the 2nd retention time.

6. the dust display unit described in claim 1 or 2 is characterized in that also comprising: with the 1st inhibit signal and the 2nd inhibit signal compared, and the comparison means exported of a side inhibit signal wherein,

Described dust display unit is carried out the dust demonstration according to the inhibit signal of described comparison means output.

7. the dust display unit described in claim 1 or 2 is characterized in that also comprising: with the 1st inhibit signal with the 2nd inhibit signal is compared and a side's that dirty degree is many inhibit signal is exported comparison means,

Described dust display unit is carried out the dust demonstration according to the inhibit signal of the output of described comparison means.

8. the dust display unit described in claim 1 or 2 is characterized in that also comprising: the 3rd holding device of determining the 1st retention time and the 2nd retention time according to the dust ratio of the 1st dust detection signal and the 2nd dust detection signal.

9. as claim 1 or 2 described dust display unit, it is characterized in that also comprising: determine the 3rd holding device of the 1st retention time and the 2nd retention time according to the dust ratio of the 1st dust detection signal and the 2nd dust detection signal,

The 1st holding device, the 2nd holding device or the 3rd holding device change the retention time according to the amount of dust of the 1st dust detection signal or the 2nd dust detection signal.

10. an electric dust collector is characterized in that comprising as claim 1 or 2 described dust display unit.

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