CN102565489A - Remote-control electronic multimeter - Google Patents

Abstract

The invention provides a remote-control electronic multimeter comprising a multimeter body (10) and a remote control device (20), wherein the remote control device (20) produces a control command according to the measuring level selection of a user, wirelessly transmits the control command, and wirelessly receives and displays a measurement reading number; and the multimeter body (10) wirelessly receives the control command, measures according to the control command to produce the measurement reading number and wirelessly transmits the measurement reading to the remote control device (20). The invention adopts a remote control and reading mode for parameter measurement, so that a measurer can use the multimeter more conveniently.

Description

A kind of remote control electric multimeter

Technical field

The present invention relates to electronic multimeter, especially a kind of electronic multimeter with distant control function.

Background technology

Electronic multimeter is a kind of measurement instrument commonly used, is widely used in fields such as engineering design, overhaul of the equipments, scientific experiment, can be used for measuring straight/ac voltage, straight/alternating current flow valuve and resistance value etc.Conventional electronic multimeter is made up of fuselage and test pencil.Test pencil can adopt forms such as probe, clip, is used for contacting to insert signal with circuit under test.Fuselage is generally the one-piece construction in the plastic casing, and fuselage is provided with LCDs, selects gear and metering circuit.

In order to reduce the error to measuring, the test pencil of multimeter and the line between the fuselage are unsuitable long, to reduce unnecessary interference.Yet this also makes conventional electronic multimeter when using, have defective.Under some special situation; The measuring position and the survey crew position apart from each other at multimeter place; Perhaps multimeter is in the position that survey crew is difficult for seeing its demonstration reading, and this makes survey crew be difficult to conveniently and accurately read the demonstration reading of multimeter.For example, when the internal circuit of some equipment is measured, need multimeter be placed in the device housings, survey crew read the multimeter video data and will have inconvenience this moment.

Summary of the invention

In order to overcome the above-mentioned defective that is difficult for reading that conventional electronic multimeter exists, the invention provides a kind of remote control electric multimeter, it adopts the mode of long-distance remote control and reading to carry out parameter measurement, thereby makes the gauger can use multimeter more easily.

The technical scheme that the present invention adopted is: a kind of remote control electric multimeter; Comprise table body (10) and telechiric device (20); Wherein telechiric device (20) generates steering order and the said steering order of wireless transmit according to the user to the selection of measuring gear, and wireless receiving and show survey measurements; The said steering order of said table body (10) wireless receiving is measured the generation survey measurements according to said steering order, and to the said survey measurements of telechiric device (20) wireless transmission.

Wherein, preferably, said table body (10) comprising: wireless module (101), control module (102), gear driver module (103), driving switch (104), metering circuit (105) and test pencil (106); Wherein, wireless module (101) is used for and telechiric device (20) radio communication, receives said steering order and sends said survey measurements; Control module (102) is used for driving driving switch (104) according to said steering order control gear driver module (103) and selects to measure gear, and transmits said survey measurements from metering circuit (105) reception and to wireless module (101); Metering circuit (105) is measured according to selected measurement gear and is transmitted said survey measurements to control module (102).

Preferably, said telechiric device (20) comprising: wireless module (201), controller (202), gear selector (203) and display (204); Wherein, wireless module (201) is used for and table body (10) radio communication, sends said steering order and receives said measurement data; Controller (202) generates said steering order according to the selection of said gear selector (203), and control display (204) shows said measurement data.

Preferably, said table body (10) also comprises security module (107); When measured signal surpassed range ability, metering circuit (105) was sent alerting signal to control module (102), and said control module (102) is received the said security module of control (107) after the said alerting signal and cut off being connected of test pencil (106) and metering circuit (105).

Further preferably, said control module (102) sends to said telechiric device (20) through wireless module (101) with said alerting signal.Said telechiric device (20) further comprises loudspeaker (205), and loudspeaker after receiving said alerting signal (205) buzzing is reported to the police.

Further preferably, said telechiric device (20) also comprises recovery button (206), and telechiric device (20) sends restoring signal to table body (10) after pressing said recovery button (206); The said security module of control (107) reclosed test pencil (106) and metering circuit (107) after the control module (102) of table body (10) was received restoring signal.

The invention has the beneficial effects as follows: compare traditional electronic multimeter; Utilize remote control electric multimeter of the present invention; Survey crew can be connected to the table body in the circuit under test earlier, comes the handover measurement gear in larger distance through wireless remote control then, and the remote-wireless reading.Even survey crew position distance table body is distant, or survey crew is difficult for reaching table body position and carries out reading, utilizes technical scheme of the present invention also can conveniently realize remote control and reading, and operation is simplified greatly.And remote control electric multimeter of the present invention is through security module, can in time cut off being connected of multimeter and circuit under test where necessary, effectively prevents the multimeter damage.

Description of drawings

Fig. 1 is the remote control electric multimeter one-piece construction synoptic diagram of the preferred embodiments of the present invention;

Fig. 2 is the circuit structure diagram of the remote control electric multimeter of the preferred embodiments of the present invention.

Embodiment

Combine accompanying drawing and preferred embodiment that the present invention is done further detailed explanation now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.

Fig. 1 is the one-piece construction synoptic diagram of remote control electric multimeter according to the invention.As shown in the figure, different with traditional multimeter, remote control electric multimeter of the present invention comprises independently two ingredients: table body 10 and telechiric device 20.Table body 10 has red, black meter pen from seeing in appearance, can be inserted circuit under test, accomplishes the measurement of parameter to be measured to measured signal.Here said parameter to be measured includes but not limited to directly/alternating voltage, straight/alternating current, resistance etc., and this also is the common parameter that traditional multimeter can be measured.Telechiric device 20 has display screen from seeing in appearance, gear selector, the parameter kind that survey crew can select multimeter to measure through gear selector, and obtain reading through display screen.Can realize radio communication between table body 10 and the telechiric device 20, the communication here can be various wireless communication means, includes but not limited to infrared, radio frequency, bluetooth and optical sensor radio communication etc.In actual use, survey crew can be earlier places circuit under test one side and with the tested point of test pencil CC with table body 10, and survey crew can controlled and reading through telechiric device 20 on body 10 position far away apart from showing then.

Telechiric device 20 generates steering order and the said steering order of wireless transmit according to the user to the selection of measuring gear, and wireless receiving and show survey measurements; The said steering order of said table body 10 wireless receivings is measured the generation survey measurements according to said steering order, and to the said survey measurements of telechiric device 20 wireless transmissions.

Fig. 2 has specifically illustrated the electrical block diagram of the said remote control electric multimeter of the preferred embodiment of the present invention.As shown in Figure 2, said table body 10 comprises: wireless module 101, control module 102, gear driver module 103, driving switch 104, metering circuit 105 and test pencil 106; Table body 10 connects the access point of circuit under test through test pencil 106 when reality is used.Wherein, Wireless module 101 is used for and telechiric device 20 radio communications; Receive said steering order and send said survey measurements, the communication of this module support can be various wireless communication means such as infrared, radio frequency, bluetooth and optical sensor radio communication; Control module 102 is used for driving driving switch 104 according to said steering order control gear driver module 103 and selects to measure gear, and transmits said survey measurements from metering circuit 105 receptions and to wireless module 101; After the measurement gear was selected, metering circuit 105 inserted circuit under test through test pencil 106, and according to selected measurement gear the parameter to be measured of circuit under test is measured, and transmitted said survey measurements to control module 102.

Said telechiric device 20 comprises: wireless module 201, controller 202, gear selector 203 and display 204.Wherein, wireless module 201 is used for and table body 10 radio communications, sends said steering order and receives said measurement data; The user selects to measure gear through gear selector 203, and it is identical with the measurement gear selection of traditional multimeter that the measurement gear is here selected, and can select the AC/DC voltage of different range abilities, gears such as ac and dc current and resistance value.Controller 202 generates said steering order according to the selection of said gear selector 203, this steering order and then be wirelessly sent to telechiric device 20 by wireless module 201; The said measurement data that controller 202 and then control display 204 show from telechiric device 20 wireless receivings.

In the use of traditional multimeter; If the numerical value of measured signal has exceeded the range ability of multimeter in the circuit under test; Then multimeter will be reported to the police through display flicker or loudspeaker buzzing; At this moment survey crew must cut off test pencil immediately from circuit under test, otherwise can cause damage to multimeter.But, under the situation of remote metering,, can't carry out rupturing operation immediately because survey crew is far away apart from the table body, probably can cause multimeter to damage.

To this situation, guarantee multimeter safety when realizing remote control, as shown in Figure 2, said table body 10 also comprises security module 107; Security module 107 can be a controlled on-off circuit between test pencil 106 and metering circuit 105; When measured signal surpasses range ability; Metering circuit 105 is sent alerting signal to control module 102; Said control module 102 is received the said security module 107 of control after the said alerting signal and is cut off being connected of test pencils 106 and metering circuit 105; Thereby realize cutting off immediately being connected of multimeter and circuit under test, guaranteed the safety of multimeter.And said control module 102 can send to said telechiric device 20 with said alerting signal through wireless module 101.As shown in Figure 2, said telechiric device 20 further comprises loudspeaker 205, and after receiving said alerting signal, 205 buzzings of controller 202 control loudspeakers are reported to the police, thereby prompting measurement user notes adjusting gear.

The gear that multimeter has a plurality of range abilities usually to same parameter to be measured.When the measured signal no to scale, survey crew can will be measured the gear that gear is transferred to the greater amount journey through gear selector 203.Said telechiric device 20 comprises recovery button 206, after survey crew adjustment gear, presses said recovery button 206 back telechiric devices 20 and sends restoring signals to table body 10; The said security module 107 of control reclosed test pencil 106 and metering circuit 107 after the control module 102 of table body 10 was received restoring signal, so just can continue surveying work with new gear by far distance controlled table body 10.

It is thus clear that the design that remote control electric multimeter employing table body of the present invention separates with telechiric device has realized far distance controlled multimeter gear and telereading, and is easy to operate; Designed security module to remotely-controlled characteristics, prevented that effectively multimeter from damaging.

With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the instructions, must confirm its technical scope according to the claim scope.

Claims (6)

1. remote control electric multimeter; It is characterized in that: comprise table body (10) and telechiric device (20); Wherein telechiric device (20) generates steering order and the said steering order of wireless transmit according to the user to the selection of measuring gear, and wireless receiving and show survey measurements; The said steering order of said table body (10) wireless receiving is measured the generation survey measurements according to said steering order, and to the said survey measurements of telechiric device (20) wireless transmission.

2. remote control electric multimeter according to claim 1 is characterized in that: said table body (10) comprises wireless module (101), control module (102), gear driver module (103), driving switch (104), metering circuit (105) and test pencil (106); Wherein, wireless module (101) is used for and telechiric device (20) radio communication, receives said steering order and sends said survey measurements; Control module (102) is used for driving driving switch (104) according to said steering order control gear driver module (103) and selects to measure gear, and transmits said survey measurements from metering circuit (105) reception and to wireless module (101); Metering circuit (105) is measured according to selected measurement gear and is transmitted said survey measurements to control module (102).

3. remote control electric multimeter according to claim 1 is characterized in that: said telechiric device (20) comprises wireless module (201), controller (202), gear selector (203) and display (204); Wherein, wireless module (201) is used for and table body (10) radio communication, sends said steering order and receives said measurement data; Controller (202) generates said steering order according to the selection of said gear selector (203), and control display (204) shows said measurement data.

4. remote control electric multimeter according to claim 2 is characterized in that: said table body (10) also comprises security module (107); When measured signal surpassed range ability, metering circuit (105) was sent alerting signal to control module (102), and said control module (102) is received the said security module of control (107) after the said alerting signal and cut off being connected of test pencil (106) and metering circuit (105).

5. remote control electric multimeter according to claim 4 is characterized in that: said control module (102) sends to said telechiric device (20) through wireless module (101) with said alerting signal.Said telechiric device (20) further comprises loudspeaker (205), and loudspeaker after receiving said alerting signal (205) buzzing is reported to the police.

6. remote control electric multimeter according to claim 5 is characterized in that: said telechiric device (20) also comprises recovery button (206), and telechiric device (20) sends restoring signal to table body (10) after pressing said recovery button (206); The said security module of control (107) reclosed test pencil (106) and metering circuit (107) after the control module (102) of table body (10) was received restoring signal.

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