技术领域technical field
本发明涉及家用电器技术领域，尤其涉及一种检测方法和微波炉。The invention relates to the technical field of household appliances, in particular to a detection method and a microwave oven.
背景技术Background technique
微波炉是利用食物在微波场中吸收微波能量而使自身加热的烹饪器具。类似的厨房家电还包括光波炉。其工作原理大致为微波炉内的微波产生装置(如半导体微波源、磁控管)产生微波，食物中的水和其他极性分子们被微波带动，产生高频的旋转和摩擦，从而使得食物的温度在短时间内就能够急剧升高。A microwave oven is a cooking appliance that uses food to absorb microwave energy in a microwave field to heat itself. Similar kitchen appliances also include microwave ovens. Its working principle is roughly that the microwave generating device (such as semiconductor microwave source, magnetron) in the microwave oven generates microwaves, and the water and other polar molecules in the food are driven by the microwaves to generate high-frequency rotation and friction, thereby making the food The temperature can rise sharply in a short period of time.
但是微波却不能穿过金属，当微波接触到金属时，大部分都会被反射回来，当金属持续高速的反射微波时，就会使金属表面出现火花，严重时候甚至导致炉内放电打火，引起火灾事故。因此，微波炉表面一般贴有警告标签，提示用户在微波炉中不得使用金属器皿。但是由于该过程仅靠用户的自觉性，在一些老年用户或者小孩用户不知情的情况下，依然会出现意外发生。However, microwaves cannot pass through metals. When microwaves touch metals, most of them will be reflected back. When metals continue to reflect microwaves at a high speed, sparks will appear on the metal surface. fire accident. Therefore, warning labels are generally affixed on the surface of microwave ovens, reminding users not to use metal utensils in microwave ovens. However, since this process only depends on the user's self-consciousness, accidents may still occur without the knowledge of some elderly users or child users.
当前对于微波炉内的金属器皿检测方法大致是通过设置磁场产生装置和磁场感应装置对加热腔内的磁场变化进行检测，从而确定加热腔内是否有金属器皿。而该方案需要在加热腔内进行打孔，从而容易造成微波泄露，并且磁场产生装置和磁场感应装置在实现过程中电路结构复杂，集成度较低，成本较高。The current method for detecting metal utensils in a microwave oven is generally to detect the change of the magnetic field in the heating chamber by setting a magnetic field generating device and a magnetic field induction device, so as to determine whether there is a metal utensil in the heating chamber. However, this solution needs to drill holes in the heating cavity, which may easily cause microwave leakage, and the circuit structure of the magnetic field generating device and the magnetic field sensing device is complicated, the integration degree is low, and the cost is high.
发明内容Contents of the invention
为解决上述技术问题，本发明实施例期望提供一种检测方法和微波炉，无需在加热腔内进行打孔，避免微波泄露，而且结构简单、成本低，集成度高。In order to solve the above technical problems, the embodiments of the present invention expect to provide a detection method and a microwave oven, which do not need to drill holes in the heating chamber to avoid microwave leakage, and have a simple structure, low cost, and high integration.
本发明的技术方案是这样实现的：Technical scheme of the present invention is realized like this:
第一方面，本发明实施例提供了一种检测方法，所述方法应用于微波炉，所述方法包括：In the first aspect, an embodiment of the present invention provides a detection method, the method is applied to a microwave oven, and the method includes:
在微波炉的微波产生装置处于工作状态时，采集微波炉加热腔内的声音信号；When the microwave generating device of the microwave oven is in the working state, the sound signal in the heating cavity of the microwave oven is collected;
检测所述声音信号中是否包括金属打火声音；Detecting whether the sound signal includes the sound of metal sparking;
当存在金属打火声音时，关闭微波炉的微波产生装置。When there is the sound of metal sparking, turn off the microwave generating device of the microwave oven.
在上述方案中，当存在金属打火声音时，所述方法还包括以下至少一项：In the above solution, when there is metal sparking sound, the method further includes at least one of the following:
通过发光二极管进行发光告警；Light-emitting alarm through light-emitting diodes;
通过蜂鸣器进行声音提醒；Sound reminder through buzzer;
向与所述微波炉关联的终端发送提示信息。Send prompt information to a terminal associated with the microwave oven.
在上述方案中，所述采集微波炉加热腔内的声音信号，包括：In the above scheme, the collection of sound signals in the heating chamber of the microwave oven includes:
通过麦克风或麦克风阵列采集微波炉加热腔内的声音信号；其中，所述麦克风或麦克风阵列设置于所述微波炉加热腔的通风孔边缘。Acoustic signals in the heating chamber of the microwave oven are collected through a microphone or a microphone array; wherein, the microphone or microphone array is arranged on the edge of a vent hole of the heating chamber of the microwave oven.
在上述方案中，检测所述声音信号中是否包括金属打火声音，包括：In the above solution, detecting whether the sound signal includes the sound of metal sparking includes:
将所述声音信号进行去噪，并从去噪后的声音信号中提取有效信号；Denoising the sound signal, and extracting an effective signal from the denoised sound signal;
将所述有效信号与预存的关于金属打火的声音模板进行比对，获取所述有效信号与所述声音模板的相似度；Comparing the effective signal with a pre-stored sound template about metal ignition, to obtain the similarity between the effective signal and the sound template;
当所述相似度大于或等于预设的相似度阈值时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the similarity is greater than or equal to a preset similarity threshold, it is determined that the sound signal includes the sound of metal sparking; otherwise, it is determined that the sound signal does not include the sound of metal sparking.
在上述方案中，检测所述声音信号中是否包括金属打火声音，包括：In the above solution, detecting whether the sound signal includes the sound of metal sparking includes:
按照预设的金属打火的音频范围从所述声音信号中提取有效信号；extracting an effective signal from the sound signal according to the preset audio range of metal sparkling;
对所述有效信号按照预设的信号调理策略进行调理，获得调理后的有效信号；Conditioning the effective signal according to a preset signal conditioning strategy to obtain a conditioned effective signal;
确定所述调理后有效信号中是否包括金属打火声音的特征；Determine whether the effective signal after conditioning includes the feature of metal sparking sound;
当所述调理后有效信号中包括金属打火声音的特征时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the conditioned effective signal includes the feature of the metal sparking sound, it is determined that the sound signal includes the metal sparking sound; otherwise, it is determined that the sound signal does not include the metal sparking sound.
第二方面，本发明实施例提供了一种微波炉，所述微波炉包括：具有微波产生装置和声音采集装置的加热腔、检测装置和控制器；其中，In a second aspect, an embodiment of the present invention provides a microwave oven, which includes: a heating chamber with a microwave generating device and a sound collecting device, a detection device, and a controller; wherein,
所述声音采集装置，用于在所述微波产生装置处于工作状态时，采集所述加热腔内的声音信号；The sound collecting device is used to collect sound signals in the heating chamber when the microwave generating device is in working state;
所述检测装置，用于检测所述声音信号中是否包括金属打火声音；以及，当所述声音信号中包括金属打火声音时，向所述控制器传输触发信号；The detection device is used to detect whether the sound signal includes the sound of metal sparking; and, when the sound signal includes the sound of metal sparking, transmit a trigger signal to the controller;
所述控制器，用于控制所述微波产生装置的工作状态；并当接收到所述触发信号时，关闭所述微波产生装置。The controller is used to control the working state of the microwave generating device; and shut down the microwave generating device when receiving the trigger signal.
在上述方案中，所述微波炉还包括与所述控制器连接的告警装置；In the above solution, the microwave oven further includes an alarm device connected to the controller;
所述控制器，还用于当接收到所述触发信号时，向所述告警装置发送开启信号；The controller is further configured to send an activation signal to the alarm device when the trigger signal is received;
所述告警装置，用于根据所述开启信号进行告警。The alarm device is configured to issue an alarm according to the opening signal.
在上述方案中，告警装置包括：发光提示模块、声音提示模块以及提醒信息发送模块中的至少一个；In the above solution, the alarm device includes: at least one of a light-emitting prompt module, a sound prompt module, and a reminder information sending module;
其中，所述发光提示模块包括发光二极管，用于根据所述开启信号进行发光告警；Wherein, the light-emitting reminder module includes a light-emitting diode, which is used to give a light-emitting alarm according to the opening signal;
所述声音提示模块，包括蜂鸣器，用于根据所述开启信号进行声音提醒；The sound prompt module includes a buzzer for sound reminder according to the opening signal;
所述提醒信息发送模块，用于根据所述开启信号向与所述微波炉关联的终端发送提示信息。The reminder information sending module is configured to send reminder information to a terminal associated with the microwave oven according to the activation signal.
在上述方案中，所述声音采集装置，包括麦克风或麦克风阵列；且所述麦克风或麦克风阵列设置于所述微波炉加热腔的通风孔边缘。In the solution above, the sound collection device includes a microphone or a microphone array; and the microphone or microphone array is arranged on the edge of the ventilation hole of the heating cavity of the microwave oven.
在上述方案中，所述检测装置，具体用于：In the above scheme, the detection device is specifically used for:
将所述声音信号进行去噪，并从去噪后的声音信号中提取有效信号；以及，Denoising the sound signal, and extracting an effective signal from the denoised sound signal; and,
将所述有效信号与预存的关于金属打火的声音模板进行比对，获取所述有效信号与所述声音模板的相似度；以及，Comparing the effective signal with a pre-stored sound template about metal sparking to obtain the similarity between the effective signal and the sound template; and,
当所述相似度大于或等于预设的相似度阈值时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the similarity is greater than or equal to a preset similarity threshold, it is determined that the sound signal includes the sound of metal sparking; otherwise, it is determined that the sound signal does not include the sound of metal sparking.
在上述方案中，所述检测装置，具体用于：In the above scheme, the detection device is specifically used for:
按照预设的金属打火的音频范围从所述声音信号中提取有效信号；以及，Extracting an effective signal from the sound signal according to a preset audio range of metal sparkling; and,
对所述有效信号按照预设的信号调理策略进行调理，获得调理后的有效信号；以及，Conditioning the valid signal according to a preset signal conditioning strategy to obtain a conditioned valid signal; and,
确定所述调理后有效信号中是否包括金属打火声音的特征；以及determining whether the conditioned effective signal includes the characteristic of metal sparking sound; and
当所述调理后有效信号中包括金属打火声音的特征时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the conditioned effective signal includes the feature of the metal sparking sound, it is determined that the sound signal includes the metal sparking sound; otherwise, it is determined that the sound signal does not include the metal sparking sound.
本发明实施例提供了一种检测方法和微波炉，通过检测加热腔内的声音信号判定加热腔内是否有金属器皿。从而无需在加热腔内进行打孔就能够检测金属器皿，避免微波泄露，而且实现的结构简单、成本低，集成度高。Embodiments of the present invention provide a detection method and a microwave oven, which determine whether there is a metal vessel in the heating cavity by detecting the sound signal in the heating cavity. Therefore, the metal vessel can be detected without drilling holes in the heating chamber, microwave leakage is avoided, and the realized structure is simple, the cost is low, and the integration degree is high.
附图说明Description of drawings
图1为本发明实施例提供的一种检测方法的流程示意图；Fig. 1 is a schematic flow chart of a detection method provided by an embodiment of the present invention;
图2为本发明实施例提供的一种检测声音信号中是否包括金属打火声音的流程示意图；Fig. 2 is a schematic flow chart of detecting whether the sound signal includes the sound of metal sparking provided by an embodiment of the present invention;
图3为本发明实施例提供的另一种检测声音信号中是否包括金属打火声音的流程示意图；Fig. 3 is another schematic flow chart for detecting whether the sound signal includes the sound of metal sparking provided by an embodiment of the present invention;
图4为本发明实施例提供的一种终端显示界面的示意图；FIG. 4 is a schematic diagram of a terminal display interface provided by an embodiment of the present invention;
图5为本发明实施例提供的一种微波炉的结构示意图。Fig. 5 is a schematic structural diagram of a microwave oven provided by an embodiment of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
实施例一Embodiment one
参见图1，其示出了本发明实施例提供的一种检测方法，该方法可以应用于微波炉，所述方法可以包括：Referring to Figure 1, it shows a detection method provided by an embodiment of the present invention, which can be applied to a microwave oven, and the method can include:
S101：在微波炉的微波产生装置处于工作状态时，采集微波炉加热腔内的声音信号；S101: When the microwave generating device of the microwave oven is in a working state, collect the sound signal in the heating cavity of the microwave oven;
在具体实现过程中，微波产生装置可以为半导体微波源、磁控管等。In a specific implementation process, the microwave generating device may be a semiconductor microwave source, a magnetron, and the like.
S102：检测所述声音信号中是否包括金属打火声音；S102: Detect whether the sound signal includes the sound of metal sparking;
S103：当存在金属打火声音时，关闭微波炉的微波产生装置。S103: When there is a metal sparking sound, turn off the microwave generating device of the microwave oven.
需要说明的是，当加热腔内有金属器皿时，在微波产生装置的工作状态下，金属器皿会对微波进行反射，当金属器皿持续高速地反射微波时，金属器皿表面就会出现火花。由于出现火花时会伴有金属打火的声音，通常是“啪，啪”的声音，因此，当检测到声音信号中包括金属打火声音时，则关闭微波炉的微波产生装置。It should be noted that when there is a metal vessel in the heating chamber, the metal vessel will reflect the microwave under the working state of the microwave generating device. When the metal vessel continues to reflect the microwave at a high speed, sparks will appear on the surface of the metal vessel. Since the occurrence of sparks will be accompanied by the sound of metal sparking, usually the sound of "crack, crack", therefore, when the sound signal includes the sound of metal sparking, the microwave generating device of the microwave oven is turned off.
示例性地，所述采集微波炉加热腔内的声音信号，在具体实现过程中，可以包括：通过麦克风或麦克风阵列采集微波炉加热腔内的声音信号；其中，所述麦克风或麦克风阵列设置于所述微波炉加热腔的通风孔边缘。从而可以不用对加热腔进行打孔，不改变原有微波炉加热腔结构，这样的设置方式避免了微波泄漏的可能，而且不影响微波加热均匀性。Exemplarily, the collection of the sound signal in the heating cavity of the microwave oven may include: collecting the sound signal in the heating cavity of the microwave oven through a microphone or a microphone array; wherein, the microphone or the microphone array is arranged in the The edge of the ventilation hole in the microwave heating cavity. Therefore, it is not necessary to drill holes in the heating chamber, and the structure of the original microwave oven heating chamber is not changed. This arrangement avoids the possibility of microwave leakage and does not affect the uniformity of microwave heating.
优选地，参见图2，对于步骤S102，检测所述声音信号中是否包括金属打火声音，可以包括：Preferably, referring to FIG. 2, for step S102, detecting whether the sound signal includes the sound of metal sparking may include:
S1021A：将所述声音信号进行去噪，并从去噪后的声音信号中提取有效信号；S1021A: Denoising the sound signal, and extracting an effective signal from the denoised sound signal;
S1022A：将所述有效信号与预存的关于金属打火的声音模板进行比对，获取所述有效信号与所述声音模板的相似度；S1022A: Compare the effective signal with a pre-stored sound template about metal sparking, and obtain a similarity between the effective signal and the sound template;
S1023A：将相似度与预设的相似度阈值进行比较：S1023A: Compare the similarity with a preset similarity threshold:
S1024A：当所述相似度大于或等于预设的相似度阈值时，确定所述声音信号中包括金属打火声音；否则，转至S1025A：确定所述声音信号中不包括金属打火声音。S1024A: When the similarity is greater than or equal to the preset similarity threshold, determine that the sound signal includes the sound of metal sparking; otherwise, go to S1025A: determine that the sound signal does not include the sound of metal sparking.
在具体实现过程中，可以通过对声音信号进行滤波去噪消除金属打火声音之外的大部分声音信号，防止噪声对测量结果产生干扰；随后从去噪后的声音信号中提取有效信号，接着将有效信号与预存的关于金属打火的声音模板进行比对，获取有效信号与声音模板的相似度。可以理解地，通过提前采集不同情况下金属打火声音，建立关于金属打火声音数据库，从而能够为声音信号的比对提供模板。在获取到相似度之后，可以将相似度与预设的相似度阈值进行比较，当相似度大于或等于预设的相似度阈值时，则可以确定声音信号中包括金属打火声音；否则，则可以确定声音信号中不包括金属打火声音In the specific implementation process, it is possible to filter and denoise the sound signal to eliminate most of the sound signals except for the metal sparking sound, so as to prevent the noise from interfering with the measurement results; then extract the effective signal from the denoised sound signal, and then Compare the effective signal with the pre-stored sound template about metal ignition to obtain the similarity between the effective signal and the sound template. It can be understood that by collecting metal sparking sounds in different situations in advance, a database of metal sparking sounds can be established, thereby providing a template for the comparison of sound signals. After obtaining the similarity, the similarity can be compared with a preset similarity threshold, and when the similarity is greater than or equal to the preset similarity threshold, it can be determined that the sound signal includes the sound of metal ignition; otherwise, then It can be determined that the sound of metal sparking is not included in the sound signal
优选地，参见图3，对于步骤S102，检测所述声音信号中是否包括金属打火声音，可以包括：Preferably, referring to FIG. 3, for step S102, detecting whether the sound signal includes the sound of metal sparking may include:
S1021B：按照预设的金属打火的音频范围从所述声音信号中提取有效信号；S1021B: Extract an effective signal from the sound signal according to the preset audio range of the metal ignition;
S1022B：对所述有效信号按照预设的信号调理策略进行调理，获得调理后的有效信号；S1022B: Condition the effective signal according to a preset signal conditioning strategy to obtain a conditioned effective signal;
S1023B：确定调理后有效信号中是否包括金属打火声音的特征；S1023B: Determine whether the conditioned effective signal includes the characteristic of metal sparking sound;
S1024B：当所述调理后有效信号中包括金属打火声音的特征时，确定声音信号中包括金属打火声音；否则，转至S1025B：确定声音信号中不包括金属打火声音。S1024B: When the adjusted effective signal includes the characteristic of the sound of metal sparking, determine that the sound signal includes the sound of metal sparking; otherwise, go to S1025B: determine that the sound signal does not include the sound of metal sparking.
可以理解地，不同的声音信号具有不同的频谱特性，在具体实现过程中，可以预先采集不同情况下金属打火声音，并且获取金属打火声音所处的频率范围；随后通过带通滤波器从声音信号中提取处于金属打火声音频率范围内的有效信号，避免其它声音信号干扰；在获得有效信号之后，可以对有效信号进行放大、调制和信号变换等信号处理手段进行调理；接着，确定调理后的有效信号中是否包括金属打火声音的特征，例如高频声音的强度较大；当所述调理后有效信号中包括金属打火声音的特征时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。It can be understood that different sound signals have different spectral characteristics. In the specific implementation process, the metal sparking sound in different situations can be collected in advance, and the frequency range of the metal sparking sound can be obtained; Extract the effective signal within the frequency range of the metal ignition sound from the sound signal to avoid interference from other sound signals; after obtaining the effective signal, the effective signal can be conditioned by signal processing methods such as amplification, modulation and signal conversion; then, determine the conditioning Whether the final effective signal includes the feature of metal sparking sound, for example, the intensity of high-frequency sound is relatively large; when the adjusted effective signal includes the feature of metal sparking sound, it is determined that the sound signal includes metal sparking sound; otherwise, it is determined that the sound signal does not include the sound of metal sparking.
示例性地，当存在金属打火声音时，除了关闭微波炉的微波产生装置以外，所述方法还可以包括以下至少一项：Exemplarily, when the sound of metal sparking exists, in addition to turning off the microwave generating device of the microwave oven, the method may further include at least one of the following:
通过发光二极管进行发光告警；Light-emitting alarm through light-emitting diodes;
通过蜂鸣器进行声音提醒；Sound reminder through buzzer;
向与所述微波炉关联的终端发送提示信息。Send prompt information to a terminal associated with the microwave oven.
需要说明的是，由于目前智能家电设备的发展，家用电器均可以通过无线或有线网络与终端进行关联，从而不仅能够实现终端对智能家电的控制，还能够实现智能家电设备向终端反馈工作状态。因此，当微波炉与终端进行关联之后，可以通过提醒信息发送模块向与微波炉关联的终端发送提示消息，使得用户能够从终端中查看到提示信息，并将金属器皿移出加热腔。具体提示信息在终端的显示状态如图4所示。It should be noted that due to the current development of smart home appliances, home appliances can be associated with terminals through wireless or wired networks, so that not only can the terminal control the smart home appliances, but also the smart home appliances can feedback the working status to the terminal. Therefore, after the microwave oven is associated with the terminal, a reminder message can be sent to the terminal associated with the microwave oven through the reminder information sending module, so that the user can view the reminder information from the terminal and move the metal utensil out of the heating chamber. The display state of the specific prompt information on the terminal is shown in FIG. 4 .
本实施例提供了一种检测方法，通过采集到的微波炉加热腔内的声音信号检测是否存在金属器皿，从而在实现金属器皿检测过程中，无需在加热腔内进行打孔，避免微波泄露，而且结构简单、成本低，集成度高。This embodiment provides a detection method, which detects whether there is a metal vessel through the collected sound signal in the heating cavity of the microwave oven, so that in the process of metal vessel detection, there is no need to drill holes in the heating cavity to avoid microwave leakage, and The structure is simple, the cost is low, and the integration degree is high.
实施例二Embodiment two
参见图5所示的微波炉的结构示意图，在本发明实施例中，微波炉可以是具有微波加热功能的微波炉，也可以是兼具微波加热和光波加热功能的光波炉，还可以是集成有微波加热功能的其它家电设备。如图5所示，通常微波炉可以包括：箱体1，而箱体1包括加热腔2。Referring to the schematic structural diagram of the microwave oven shown in Figure 5, in the embodiment of the present invention, the microwave oven can be a microwave oven with microwave heating function, or a light wave oven with both microwave heating and light wave heating functions, or can be integrated with microwave heating function of other home appliances. As shown in FIG. 5 , generally, a microwave oven may include: a box body 1 , and the box body 1 includes a heating chamber 2 .
如图5所示，本实施例所涉及的微波炉包括加热腔2中的微波产生装置501和声音采集装置502，以及设置在箱体1中的检测装置503和控制器504；其中，As shown in Figure 5, the microwave oven involved in this embodiment includes a microwave generating device 501 and a sound collecting device 502 in the heating cavity 2, and a detection device 503 and a controller 504 arranged in the box body 1; wherein,
声音采集装置502，用于在所述微波产生装置501处于工作状态时，采集所述加热腔2内的声音信号；A sound collecting device 502, configured to collect sound signals in the heating cavity 2 when the microwave generating device 501 is in a working state;
所述检测装置503，用于检测所述声音信号中是否包括金属打火声音；以及，当所述声音信号中包括金属打火声音时，向所述控制器504传输触发信号；The detecting device 503 is configured to detect whether the sound signal includes the sound of metal sparking; and, when the sound signal includes the sound of metal sparking, transmit a trigger signal to the controller 504;
所述控制器504，用于控制所述微波产生装置501的工作状态；并当接收到所述触发信号时，关闭所述微波产生装置501。The controller 504 is configured to control the working state of the microwave generating device 501 ; and shut down the microwave generating device 501 when receiving the trigger signal.
可以理解地，当加热腔2内有金属器皿时，在微波产生装置501的工作状态下，金属器皿会对微波进行反射，当金属器皿持续高速地反射微波时，金属器皿表面就会出现火花。由于出现火花时会伴有金属打火的声音，通常是“啪，啪”的声音，因此，声音采集装置502采集到声音信号后，检测装置503可以通过检测声音信号中是否包括金属打火声音来对应地确定是否向控制器504传输触发信号；而该触发信号可以触发控制器504关闭微波产生装置501，从而避免金属打火造成隐患。Understandably, when there is a metal vessel in the heating chamber 2, the metal vessel will reflect the microwave under the working state of the microwave generating device 501, and when the metal vessel continues to reflect the microwave at a high speed, sparks will appear on the surface of the metal vessel. Since sparks will be accompanied by the sound of metal ignition, usually the sound of "crack, crack", therefore, after the sound signal is collected by the sound collection device 502, the detection device 503 can detect whether the sound signal includes the sound of metal ignition. Correspondingly determine whether to transmit a trigger signal to the controller 504; and the trigger signal can trigger the controller 504 to turn off the microwave generating device 501, thereby avoiding hidden dangers caused by metal ignition.
在具体实现过程中，加热腔2中的微波产生装置501和所述声音采集装置502以及箱体1中的检测装置503与所述控制器504相连。In a specific implementation process, the microwave generating device 501 in the heating cavity 2 and the sound collecting device 502 and the detecting device 503 in the box 1 are connected to the controller 504 .
具体地，微波产生装置501可以为半导体微波源、磁控管等。Specifically, the microwave generating device 501 may be a semiconductor microwave source, a magnetron, or the like.
优选地，所述声音采集装置502包括麦克风或麦克风阵列；该麦克风或麦克风阵列可以设置于所述加热腔2的通风孔边缘。从而可以不用对加热腔进行打孔，不改变原有微波炉加热腔结构，这样的设置方式避免了微波泄漏的可能，而且不影响微波加热均匀性。Preferably, the sound collection device 502 includes a microphone or a microphone array; the microphone or microphone array can be arranged on the edge of the ventilation hole of the heating cavity 2 . Therefore, it is not necessary to drill holes in the heating chamber, and the structure of the original microwave oven heating chamber is not changed. This arrangement avoids the possibility of microwave leakage and does not affect the uniformity of microwave heating.
优选地，所述检测装置503，具体用于：Preferably, the detection device 503 is specifically used for:
将所述声音信号进行去噪，并从去噪后的声音信号中提取有效信号；以及，Denoising the sound signal, and extracting an effective signal from the denoised sound signal; and,
将所述有效信号与预存的关于金属打火的声音模板进行比对，获取所述有效信号与所述声音模板的相似度；以及，Comparing the effective signal with a pre-stored sound template about metal sparking to obtain the similarity between the effective signal and the sound template; and,
当所述相似度大于或等于预设的相似度阈值时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the similarity is greater than or equal to a preset similarity threshold, it is determined that the sound signal includes the sound of metal sparking; otherwise, it is determined that the sound signal does not include the sound of metal sparking.
在实现过程中，对于检测装置503，可以包括滤波电路子模块和对比子模块；其中，滤波电路子模块可以消除金属打火声音之外的大部分声音信号，防止噪声对测量结果产生干扰；In the implementation process, the detection device 503 may include a filter circuit sub-module and a comparison sub-module; wherein, the filter circuit sub-module can eliminate most of the sound signals except the metal sparking sound, and prevent noise from interfering with the measurement results;
对比子模块可以从去噪后的声音信号中提取有效信号，并将有效信号与预存的关于金属打火的声音模板进行比对，获取有效信号与声音模板的相似度；The comparison sub-module can extract the effective signal from the denoised sound signal, and compare the effective signal with the pre-stored sound template about metal ignition to obtain the similarity between the effective signal and the sound template;
需要说明的是，可以提前提前采集不同情况下金属打火声音，建立关于金属打火声音数据库，从而能够为比对子模块提供模板。因此，检测装置503在获取到相似度之后，可以将相似度与预设的相似度阈值进行比较，当相似度大于或等于预设的相似度阈值时，则可以确定声音信号中包括金属打火声音；否则，则可以确定声音信号中不包括金属打火声音；如果加热腔内的声音信号中包括有金属打火声音，那么检测装置503就可以向所述控制器504发送触发信号。It should be noted that it is possible to collect metal sparking sounds in different situations in advance, and establish a database of metal sparking sounds, so as to provide a template for the comparison sub-module. Therefore, after the detection device 503 obtains the similarity, it can compare the similarity with a preset similarity threshold, and when the similarity is greater than or equal to the preset similarity threshold, it can be determined that the sound signal includes a metal spark Otherwise, it can be determined that the sound signal does not include the sound of metal ignition; if the sound signal in the heating chamber includes the sound of metal ignition, then the detection device 503 can send a trigger signal to the controller 504.
优选地，所述检测装置503，具体用于：Preferably, the detection device 503 is specifically used for:
按照预设的金属打火的音频范围从所述声音信号中提取有效信号；以及，Extracting an effective signal from the sound signal according to a preset audio range of metal sparkling; and,
对所述有效信号按照预设的信号调理策略进行调理，获得调理后的有效信号；以及，Conditioning the valid signal according to a preset signal conditioning strategy to obtain a conditioned valid signal; and,
确定所述调理后有效信号中是否包括金属打火声音的特征；以及determining whether the conditioned effective signal includes the characteristic of metal sparking sound; and
当所述调理后有效信号中包括金属打火声音的特征时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。When the conditioned effective signal includes the feature of the metal sparking sound, it is determined that the sound signal includes the metal sparking sound; otherwise, it is determined that the sound signal does not include the metal sparking sound.
由于不同的声音信号具有不同的频谱特性，因此，在实现过程中，可以预先采集不同情况下金属打火声音，并且获取金属打火声音所处的频率范围；随后检测装置503通过带通滤波器从声音信号中提取处于金属打火声音频率范围内的有效信号，避免其它声音信号干扰；在获得有效信号之后，可以对有效信号进行放大、调制和信号变换等信号处理手段进行调理；接着，确定调理后的有效信号中是否包括金属打火声音的特征，例如高频声音的强度较大；当所述调理后有效信号中包括金属打火声音的特征时，确定所述声音信号中包括金属打火声音；否则，确定所述声音信号中不包括金属打火声音。Since different sound signals have different spectral characteristics, in the implementation process, the metal sparking sound under different circumstances can be collected in advance, and the frequency range where the metal sparking sound is obtained; then the detection device 503 passes through a bandpass filter Extract the effective signal within the frequency range of metal ignition sound from the sound signal to avoid interference from other sound signals; after obtaining the effective signal, the effective signal can be conditioned by signal processing methods such as amplification, modulation and signal transformation; then, determine Whether the adjusted effective signal includes the characteristics of metal sparking sound, for example, the intensity of high-frequency sound is relatively large; when the adjusted effective signal includes the feature of metal sparking sound, it is determined that the sound signal includes metal sparking fire sound; otherwise, it is determined that the sound signal does not include the metal sparking sound.
优选地，当加热腔内有金属器皿时，除了关闭微波产生装置501以外，还可以进行告警，因此，参见图5，所述微波炉还包括与所述控制器504连接的告警装置505；Preferably, when there is a metal utensil in the heating chamber, in addition to turning off the microwave generating device 501, an alarm can also be issued. Therefore, referring to FIG. 5, the microwave oven also includes an alarm device 505 connected to the controller 504;
所述控制器504，还用于当接收到所述触发信号时，向所述告警装置505发送开启信号；The controller 504 is further configured to send an activation signal to the alarm device 505 when the trigger signal is received;
所述告警装置505，用于根据所述开启信号进行告警。The warning device 505 is configured to give a warning according to the opening signal.
具体地，所述告警装置505包括：发光提示模块、声音提示模块以及提醒信息发送模块中的至少一个；Specifically, the warning device 505 includes: at least one of a light-emitting prompt module, a sound prompt module, and a reminder information sending module;
其中，所述发光提示模块包括发光二极管，用于根据所述开启信号进行发光告警；Wherein, the light-emitting reminder module includes a light-emitting diode, which is used to give a light-emitting alarm according to the opening signal;
所述声音提示模块，包括蜂鸣器，用于根据所述开启信号进行声音提醒；The sound prompt module includes a buzzer for sound reminder according to the opening signal;
所述提醒信息发送模块，用于根据所述开启信号向与所述微波炉关联的终端发送提示信息。The reminder information sending module is configured to send reminder information to a terminal associated with the microwave oven according to the activation signal.
针对提醒信息发送模块，需要说明的是，由于目前智能家电设备的发展，家用电器均可以通过无线或有线网络与终端进行关联，从而不仅能够实现终端对智能家电的控制，还能够实现智能家电设备向终端反馈工作状态。因此，当微波炉与终端进行关联之后，可以通过提醒信息发送模块向与微波炉关联的终端发送提示消息，使得用户能够从终端中查看到提示信息，并将金属器皿移出加热腔2。具体提示信息在终端的显示状态如图4所示。Regarding the reminder information sending module, it should be noted that due to the development of smart home appliances, home appliances can be associated with terminals through wireless or wired networks, so that not only can the terminal control smart home appliances, but also realize smart home appliances. Feedback the working status to the terminal. Therefore, after the microwave oven is associated with the terminal, a reminder message can be sent to the terminal associated with the microwave oven through the reminder information sending module, so that the user can view the reminder information from the terminal and move the metal utensil out of the heating chamber 2 . The display state of the specific prompt information on the terminal is shown in FIG. 4 .
综上所述，本实施例所提供的微波炉，能够实现对微波炉内的金属器皿进行检测，并当检测到金属器皿时停止微波产生装置501的工作状态并进行告警，从而在实现金属器皿检测过程中，无需在加热腔内进行打孔，避免微波泄露，而且结构简单、成本低，集成度高。To sum up, the microwave oven provided by this embodiment can detect the metal utensils in the microwave oven, and stop the working state of the microwave generating device 501 and give an alarm when the metal utensils are detected, so as to realize the metal utensil detection process Among them, there is no need to drill holes in the heating chamber to avoid microwave leakage, and the structure is simple, the cost is low, and the integration is high.
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039344.7ACN106879097A (en) | 2017-01-19 | 2017-01-19 | A detection method and microwave oven |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039344.7ACN106879097A (en) | 2017-01-19 | 2017-01-19 | A detection method and microwave oven |
| Publication Number | Publication Date |
|---|---|
| CN106879097Atrue CN106879097A (en) | 2017-06-20 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039344.7APendingCN106879097A (en) | 2017-01-19 | 2017-01-19 | A detection method and microwave oven |
| Country | Link |
|---|---|
| CN (1) | CN106879097A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203372A (en)* | 2020-10-16 | 2021-01-08 | 珠海格力电器股份有限公司 | Microwave oven, control method and device of microwave oven and storage medium |
| CN112212971A (en)* | 2019-07-11 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Detection device and method for household appliance, household appliance and storage medium |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09196383A (en)* | 1996-01-18 | 1997-07-29 | Matsushita Electric Ind Co Ltd | Cooking equipment |
| JP2009109161A (en)* | 2007-11-01 | 2009-05-21 | Panasonic Corp | microwave |
| JP2009127923A (en)* | 2007-11-22 | 2009-06-11 | Panasonic Corp | microwave |
| JP2009250444A (en)* | 2008-04-01 | 2009-10-29 | Panasonic Corp | Microwave oven |
| CN104832959A (en)* | 2015-05-12 | 2015-08-12 | 广东美的厨房电器制造有限公司 | Microwave oven and control method thereof |
| CN106596123A (en)* | 2016-11-22 | 2017-04-26 | 东软集团股份有限公司 | Device fault diagnosis method, device fault diagnosis device, and device fault diagnosis system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09196383A (en)* | 1996-01-18 | 1997-07-29 | Matsushita Electric Ind Co Ltd | Cooking equipment |
| JP2009109161A (en)* | 2007-11-01 | 2009-05-21 | Panasonic Corp | microwave |
| JP2009127923A (en)* | 2007-11-22 | 2009-06-11 | Panasonic Corp | microwave |
| JP2009250444A (en)* | 2008-04-01 | 2009-10-29 | Panasonic Corp | Microwave oven |
| CN104832959A (en)* | 2015-05-12 | 2015-08-12 | 广东美的厨房电器制造有限公司 | Microwave oven and control method thereof |
| CN106596123A (en)* | 2016-11-22 | 2017-04-26 | 东软集团股份有限公司 | Device fault diagnosis method, device fault diagnosis device, and device fault diagnosis system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212971A (en)* | 2019-07-11 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Detection device and method for household appliance, household appliance and storage medium |
| CN112203372A (en)* | 2020-10-16 | 2021-01-08 | 珠海格力电器股份有限公司 | Microwave oven, control method and device of microwave oven and storage medium |
| Publication | Publication Date | Title |
|---|---|---|
| US9888452B2 (en) | Methods and apparatus notifying a user of the operating condition of a household appliance | |
| CN109798545B (en) | Kitchen range, fire control method and device thereof and storage medium | |
| JP6374029B2 (en) | Microwave oven and method for controlling microwave oven | |
| CN104868897B (en) | The control method and device of action induction switch | |
| US9289090B2 (en) | Cooktop appliances with intelligent response to cooktop audio | |
| CN105902181A (en) | Cooking equipment control method, cooking equipment control equipment and cooking equipment | |
| CN106020007A (en) | Control method and cooking utensil | |
| EP3214955A1 (en) | Method and apparatus for controlling coffee bean roasting | |
| CN106980359A (en) | Control method, system, headset equipment and the server of household electrical appliance | |
| CN106705170A (en) | Control method and control device | |
| CN113864831B (en) | Temperature control method and device | |
| CN106879097A (en) | A detection method and microwave oven | |
| CN106123055A (en) | For heating the control equipment of utensil, method and heating utensil | |
| KR102311289B1 (en) | Heating appliance having child-lock function | |
| CN107025905A (en) | Sound control method, phonetic controller and the household electrical appliance of household electrical appliance | |
| CN108153182A (en) | Cooking equipment start and stop method, apparatus and cooking equipment | |
| CN111728466B (en) | Control method of cooking appliance, cooking appliance and computer readable storage medium | |
| CN107028486B (en) | Pressure cooker and control method thereof | |
| ES2620989T3 (en) | Equipment and procedure for adjusting the sound intensity of an acoustic signal to signal a state of a domestic appliance and domestic appliance | |
| CN107860045B (en) | Range hood and control method thereof | |
| CN104296192A (en) | Food cooking apparatus, method thereof, and food cooking system | |
| CN106091030A (en) | Control equipment, method and kitchen range for kitchen range | |
| CN110313839A (en) | It can identify the cookware, method and system and the equipment for heating liquid of liquid boiling | |
| CN112856493A (en) | Control equipment and method for dry-burning-resistant kitchen range | |
| CN105996736A (en) | Control method, control device and cooking device |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20170620 |