Electromagnetic wave processing device

Abstract

The invention provides an electromagnetic wave processing device. The electromagnetic wave processing device comprises a cylinder body, a door body and an electromagnetic wave generating system. The cylinder body is provided with a cylinder body shielding feature, the door body is provided with a door body shielding feature, and the cylinder body shielding feature and the door body shielding feature are electrically connected through the connection shielding feature when the door body is in a closed state. The processing device further comprises a detection module, and the detection module is electrically connected with the shielding feature and obtains the voltage information so as to determine whether electromagnetic wave leakage occurs in the processing device or not according to the voltage information, so that the safety of the processing device is improved, the structure is simple, and the production cost is low. The inventor of the application creatively knows that when electromagnetic wave leakage occurs, the shielding characteristic of the processing device can generate induced voltage change under the action of the outside electromagnetic wave, and whether the electromagnetic wave leakage occurs in the processing device can be determined by capturing the voltage change.

Description

Technical Field

[0001] The present invention relates to the field of electrothermal technology, and in particular to an electromagnetic wave processing device. Background Art

[0002] During the freezing process of food, the quality of the food is maintained, but the frozen food needs to be thawed before processing or eating. In order to facilitate users to freeze and thaw food, the prior art generally thaws food by electromagnetic waves, and an electromagnetic wave generating system is arranged in the refrigerator.

[0003] However, the electromagnetic waves generated by the electromagnetic wave generating system can easily affect or interfere with the surrounding food stored at low temperatures and the surrounding electrical devices. Although setting an electromagnetic shielding feature in the cavity can effectively reduce the leakage of electromagnetic waves, the shielding feature will degrade in performance after long-term use, and too many electromagnetic waves will leak around the cavity, causing the above-mentioned effects or interference to be serious. Summary of the invention

[0004] An object of the present invention is to overcome at least one technical defect in the prior art and provide an electromagnetic wave processing device.

[0005] A further object of the invention is to improve the safety of the processing unit.

[0006] Another further object of the present invention is to reduce production costs.

[0007] In particular, the present invention provides an electromagnetic wave processing device, comprising:

[0008] A cylinder body, used for containing the object to be processed;

[0009] A door body, used for opening and closing the access opening of the cylinder; and

[0010] An electromagnetic wave generating system is at least partially disposed in the cylinder or connected to the cylinder to process the object to be processed by electromagnetic waves; wherein,

[0011] The cylinder is provided with a cylinder shielding feature, the door is provided with a door shielding feature, the cylinder shielding feature and the door shielding feature are electrically connected through a connection shielding feature when the door is in a closed state; and the processing device further comprises:

[0012] The detection module is configured to be electrically connected to the shielding feature and obtain voltage information to determine whether electromagnetic wave leakage occurs in the processing device according to the voltage information.

[0013] Optionally, the shielding feature is configured to be grounded; and

[0014] A connection point where the detection module is electrically connected to the shielding feature is spaced apart from a grounding point of the shielding feature.

[0015] Optionally, the barrel shielding feature is configured to be grounded; and

[0016] The detection module is configured to be electrically connected to the door shielding feature.

[0017] Optionally, the door body comprises:

[0018] A shielding plate is arranged at the access opening of the cylinder body, serving as at least a part of the shielding feature of the door body; wherein,

[0019] The detection module is configured to be electrically connected to an edge of the shielding plate.

[0020] Optionally, the shielding plate includes:

[0021] A main body, at least partially disposed within the cylinder, and forming a gap with the cylinder shielding feature extending along the depth direction of the cylinder; and

[0022] The flange is arranged at the end of the main body close to the access opening and extends outwardly in the radial direction of the access opening; wherein,

[0023] The detection module is configured to be electrically connected to a portion of the flange located at an end of the gap.

[0024] Optionally, the door body comprises:

[0025] Supports;

[0026] A rear cover, arranged on a side of the support member close to the access opening, and enclosing a containing space with the support member;

[0027] a shielding plate, disposed in the accommodating space, serving as at least a part of the shielding feature of the door body; and

[0028] The front cover is arranged on the front side of the support member, and the detection module is fixed to the front cover and is electrically connected to the shielding plate through a receiving structure.

[0029] Optionally, the detection module includes:

[0030] a rectifier circuit, configured to be electrically connected to the shielding feature through a receiving structure and to convert an electrical signal collected by the receiving structure into a DC signal; and

[0031] The control circuit is configured to be electrically connected to the rectifier circuit and to determine whether electromagnetic wave leakage occurs in the processing device according to voltage information of the DC signal.

[0032] Optionally, the voltage information includes a voltage value of the DC signal, and the control circuit is configured as follows:

[0033] In the initial matching stage, when the voltage value is greater than a first voltage threshold, the electromagnetic wave generating system is controlled to stop working; and

[0034] In the continuing processing stage, when the voltage value is greater than the second voltage threshold, the electromagnetic wave generating system is controlled to reduce the power of the electromagnetic wave generated or stop working; wherein,

[0035] The power of the electromagnetic wave generated by the electromagnetic wave generating system is greater in the continued processing stage than in the initial matching stage, and the second voltage threshold is greater than the first voltage threshold.

[0036] Optionally, the detection module further includes:

[0037] The wireless communication circuit is configured to be electrically connected to the control circuit so as to send control instructions to the electromagnetic wave generating system.

[0038] Optionally, the detection module further includes:

[0039] The conversion circuit is configured to be electrically connected to the rectifier circuit and convert the DC signal into a power supply voltage to power the control circuit and the wireless communication circuit.

[0040] The electromagnetic wave processing device of the present invention obtains the voltage information of the shielding feature itself through the detection module, and determines whether the processing device has electromagnetic wave leakage based on the voltage information, which not only improves the safety of the processing device, but also has a simple structure and low production cost. The inventor of the present application creatively recognizes that when electromagnetic wave leakage occurs, the shielding feature of the processing device will induce voltage changes under the action of the external electromagnetic wave, and by capturing the voltage change, it can be determined whether the processing device has electromagnetic wave leakage.

[0041] Furthermore, the door shielding plate and the cylinder shielding features of the present invention form a gap extending in the depth direction of the cylinder, and the detection module is electrically connected to the portion of the door shielding plate located at the end of the gap, which not only improves the reliability of the electromagnetic shielding between the door and the cylinder, and reduces the electromagnetic wave leakage of the processing device, but also the detection connection point has a more obvious voltage change compared to other positions, thereby improving the accuracy of electromagnetic wave leakage detection.

[0042] Furthermore, the detection module of the present invention includes a rectifier circuit, a control circuit, a wireless communication circuit and a conversion circuit. Not only is the detection module itself safe and reliable, but the electromagnetic wave energy that is not absorbed by the object to be processed is used to power the detection module, thereby improving the energy utilization rate of the processing device. There is no need to set up control transmission and power supply lines, and it can be assembled with the door body to form an integral component, further reducing production costs and use costs.

[0043] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0045] Figure 1 is a schematic structural diagram of an electromagnetic wave processing device according to an embodiment of the present invention;

[0046] Figure 2 yes Figure 1 Schematic axonometric view of the barrel and door body in;

[0047] Figure 3 yes Figure 2 A schematic cross-sectional view of the cylinder and door body shown;

[0048] Figure 4 yes Figure 3 A schematic partial enlarged view of the middle area A;

[0049] Figure 5 Observe from the back to the front Figure 2 Schematic axonometric view of the central door body;

[0050] Figure 6 yes Figure 5 A schematic exploded view of the door body shown;

[0051] Figure 7 yes Figure 1 Schematic diagram of the detection module. DETAILED DESCRIPTION

[0052] Figure 1 is a schematic structural diagram of an electromagnetic wave processing device 100 according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic axonometric view of the cylinder 210 and the door body 300; Figure 3 yes Figure 2Schematic cross-sectional view of the cylinder 210 and the door 300. Figures 1 to 3 The electromagnetic wave treatment device 100 may include a cylinder 210 for accommodating an object to be treated 500, a door 300 for opening and closing a take-in and put-out port of the cylinder 210, and an electromagnetic wave generating system.

[0053] The access opening of the barrel 210 can be opened forward. The barrel 210 can be composed of a lower box and an upper cover arranged above the lower box, which are assembled and fixed.

[0054] The door body 300 may include a drawer 350 for carrying the object to be processed 500 and being slidable in the front-rear direction so as to facilitate the user to take and place the object to be processed 500.

[0055] The electromagnetic wave generating system may be at least partially disposed in the cylinder 210 or accessible to the cylinder 210 so as to process the object 500 by electromagnetic waves.

[0056] The electromagnetic wave generating system may include a frequency source 410 , a power amplifier 420 , a radiation antenna 430 , and a power supply module 440 .

[0057] Specifically, the frequency source 410 may be configured to generate an electromagnetic wave signal. The power amplifier 420 may be configured to be electrically connected to the frequency source 410 to amplify the power of the electromagnetic wave signal.

[0058] The radiation antenna 430 may be disposed in the cylinder 210 and electrically connected to the power amplifier 420 to radiate the amplified electromagnetic waves into the cylinder 210 .

[0059] The power supply module 440 may be configured to be electrically connected to the frequency source 410 and the power amplifier 420 to provide electrical energy to the frequency source 410 and the power amplifier 420 .

[0060] The cylinder 210 and the door 300 may be provided with electromagnetic shielding features respectively, and are conductively connected when the door 300 is in a closed state, so as to improve the safety of the processing device 100 .

[0061] In some embodiments, the barrel 210 may be made of a conductive material, ie, the shielding feature of the barrel 210 is the barrel 210 itself.

[0062] In other embodiments, the shielding feature of the barrel 210 may be a conductive layered structure disposed on the barrel 210 , such as a metal coating.

[0063] Figure 4 yes Figure 3 Schematic partial enlarged view of area A in FIG. Figure 4The cylinder 210 may be provided with at least one swinging assembly 220, which is used to connect the shielding feature of the door body 300 as a connecting shielding feature and to be conductively connected to the shielding feature of the door body 300 when the door body 300 is in a closed state. In the present invention, at least one is one, two, or more than two.

[0064] Each swing assembly 220 may include a fixing member fixedly connected to the cylinder 210 , a limiting shaft 221 fixed to the fixing member, a swing member 222 swingable around the limiting shaft 221 , and a torsion spring for causing the swing member 222 to return to its original position.

[0065] The swinging member 222 can move from the first position to the second position under the action of the door body 300 during the closing process of the door body 300, and maintain electrical connection with the shielding feature of the door body 300 between the first position and the second position to improve the reliability of electromagnetic shielding. The fixing member, the limiting shaft 221 and the swinging member 222 can all be made of conductive materials.

[0066] The cylinder 210 may further be provided with at least one cover shell 230. Each cover shell 230 may be provided outside the cylinder 210 and cover one or more swing assemblies 220.

[0067] The processing device 100 may further include a controller 450 for controlling the operation of the frequency source 410 , the power amplifier 420 , and the power supply module 440 .

[0068] Figure 5 Observe from the back to the front Figure 2 A schematic axonometric view of the middle door body 300; Figure 6 yes Figure 5 Schematic exploded view of the door body 300 is shown. Figures 3 to 6 , the door body 300 may include a support member 310, a rear cover 320, a shielding plate 330, and at least one connecting plate.

[0069] The rear cover 320 is disposed on a side of the support member 310 close to the access opening and encloses a receiving space with the support member 310. The drawer 350 can be disposed on a side of the rear cover 320 away from the support member 310 and formed integrally with the rear cover 320.

[0070] The shielding plate 330 may be disposed in the accommodation space. Each connecting plate may be configured to be partially conductively connected to the shielding plate 330 and partially located outside the accommodation space to be conductively connected to the shielding feature of the barrel 210 .

[0071] The support member 310 and the back cover 320 may be made of insulating materials, and the shielding plate 330 and the connecting plate may be made of conductive materials, so as to reduce the heat transfer efficiency of the part of the door body 300 that can be touched by the user while forming an effective and reliable shielding feature of the door body 300. That is, the shielding feature of the door body 300 includes the shielding plate 330 and the connecting plate.

[0072] In some embodiments, the projection of the shielding plate 330 on an imaginary plane perpendicular to the access port may be at least partially located within the cylinder 210 to achieve a reliable metal closed loop with the cylinder 210 , thereby reducing the requirements for the sealing performance of the door body 300 and the cylinder 210 .

[0073] The depth direction of the cylinder 210 is a direction perpendicular to the access opening of the cylinder 210. In the illustrated embodiment, the depth direction is the front-back direction.

[0074] In some embodiments, each connecting plate may include a fixing portion 341 and at least one connecting portion 342 .

[0075] The fixing portion 341 may be configured to be fixedly connected to the rear cover 320 and located outside the accommodating space, and is used to fix the connecting plate and / or to be in conductive contact with the swinging member 222 .

[0076] Each connection portion 342 may be configured to be partially located inside the accommodating space and be conductively connected to the shielding plate 330 .

[0077] The rear cover 320 may be provided with at least one through hole. At least one connecting portion 342 may be configured to pass through the at least one through hole and enter the accommodating space.

[0078] The rear cover 320 may include an accommodation portion 321 that is arched in a direction away from the support member 310 to form at least a portion of the accommodation space.

[0079] The fixing portion 341 may be configured to be fixedly connected to the peripheral plate 3212 of the accommodating portion 321. The angle between the fixing portion 341 and the depth direction of the cylinder 210 may be 5° to 15°, such as 5°, 7°, or 15°, so as to facilitate the swinging member 222 to swing and improve the reliability of the conductive connection between the connecting plate and the swinging member 222.

[0080] In some embodiments, the number of the connecting plates may be multiple, specifically including two first connecting plates 340a and two second connecting plates 340b.

[0081] The two first connecting plates 340a may be respectively disposed on two opposite sides of the rear cover 320, and their projections on an imaginary plane parallel to the access opening are U-shaped.

[0082] The two second connection plates 340 b may be provided to seal a space between ends of the two first connection plates 340 a .

[0083] In some embodiments, the shielding plate 330 may include a main body 331 and a flange 332 .

[0084] The main body 331 may be disposed in the accommodation space formed by the accommodation portion 321 , that is, at least partially located in the cylinder 210 , and form a gap 3311 extending along the depth direction with the cylinder 210 .

[0085] The flange 332 may be disposed at an end of the main body 331 close to the support member 310 (or the access opening) and extend outwardly along the radial direction of the access opening.

[0086] The flange 332 may be formed with a first step portion 3321 and a second step portion 3322 .

[0087] The first step portion 3321 may be configured to be fixedly connected to the opening periphery of the accommodating portion 321 to achieve fixation of the shielding plate 330 itself.

[0088] The second step portion 3322 may be disposed on a side of the first step portion 3321 away from the support member 310 and configured to be conductively connected to the connection portion 342 to improve connection reliability and structural compactness.

[0089] In some embodiments, the door body 300 may further include a front cover 360. The front cover 360 may be disposed at the front side of the support member 310 and is fixedly connected to the support member 310 to cover the front surface, the upper end surface and two lateral end surfaces of the support member 310.

[0090] In some embodiments, the door body 300 may further include an upper decorative plate 370. The upper decorative plate 370 may be configured to be fixedly connected to the front cover 360 and cover the upper end surface and two lateral end surfaces of the front cover 360.

[0091] In some embodiments, the door body 300 may further include a lower decorative plate 380. The lower decorative plate 380 may be configured to be fixedly connected to the support member 310 and formed with a buckle that is recessed upwards, so as to facilitate the user to open and close the door body 300.

[0092] Figure 7 yes Figure 1 Schematic diagram of the structure of the detection module 600. Figure 1 , Figure 3 and Figure 7 In particular, the processing device 100 may further include a detection module 600 .

[0093] The detection module 600 can be configured to be electrically connected to the shielding feature of the cylinder 210, the door 300 or the swing assembly 220 and obtain voltage information to determine whether electromagnetic wave leakage occurs in the processing device 100 according to the voltage information, which not only improves the safety of the processing device 100, but also has a simple structure and low production cost. In the present invention, "electromagnetic wave leakage occurs" means that the electromagnetic wave leakage exceeds the safety threshold.

[0094] In some embodiments, the shielding features of the barrel 210 , the door 300 , or the swing assembly 220 may be set to be grounded to improve the safety of the processing device 100 .

[0095] A distance may be left between the connection point where the detection module 600 is electrically connected to the shielding feature and the grounding point of the shielding feature to ensure the sensitivity of electromagnetic wave leakage detection.

[0096] In some embodiments, the shielding feature of the barrel 210 may be configured to be grounded to ensure the reliability of the electrical connection.

[0097] The detection module 600 may be configured to be electrically connected to the shielding feature of the door body 300 to improve the sensitivity of electromagnetic wave leakage detection.

[0098] In some embodiments, the detection module 600 may be configured to be electrically connected to an edge of the shielding plate 330 to improve the sensitivity of electromagnetic wave leakage detection.

[0099] In some further embodiments, the detection module 600 may be configured to be electrically connected to a portion of the flange 332 located at an end of the gap 3311 .

[0100] In some embodiments, the detection module 600 may be fixed to the front cover 360 and electrically connected to the shielding plate 330 via the receiving structure 605 .

[0101] A slot may be formed on the surface of the front cover 360 facing the shielding plate 330 . The detection module 600 may be fixed in the slot of the front cover 360 .

[0102] In some embodiments, the detection module 600 may include a rectifier circuit 610 and a control circuit 620 .

[0103] The rectifier circuit 610 may be configured to be electrically connected to the shielding feature of the cylinder 210 , the door 300 , or the swing assembly 220 through the receiving structure 605 , and convert the electrical signal collected by the receiving structure 605 into a DC signal.

[0104] The control circuit 620 may be configured to be electrically connected to the rectifier circuit 610 , and determine whether electromagnetic wave leakage occurs in the processing device 100 according to voltage information of the DC signal.

[0105] The voltage information may include a voltage value of a DC signal. When the voltage value of the DC signal is greater than a preset voltage threshold, the control circuit 620 determines that electromagnetic wave leakage occurs in the processing device 100 .

[0106] In some further embodiments, the control circuit 620 can be configured to control the electromagnetic wave generating system to stop working in the initial matching stage (by adjusting the frequency or impedance matching circuit to achieve impedance matching between the electromagnetic wave generating system and the object to be processed 500) when the voltage value of the DC signal is greater than a first voltage threshold to stop electromagnetic wave leakage.

[0107] The control circuit 620 can also be configured to control the electromagnetic wave generating system to reduce the power of the electromagnetic wave it generates or stop working when the voltage value of the DC signal is greater than the second voltage threshold during the continued processing stage (heating the object to be processed 500 after impedance matching) to reduce or stop electromagnetic wave leakage.

[0108] The power of the electromagnetic waves generated by the electromagnetic wave generating system may be greater in the continued processing stage than in the initial matching stage, so as to improve the processing efficiency of the object 500 to be processed.

[0109] The second voltage threshold may be greater than the first voltage threshold. The first voltage threshold may correspond to an electromagnetic wave radiation density of 5 W / m 2 The second voltage threshold may correspond to an electromagnetic wave radiation density of 40W / m 2 .

[0110] In some further embodiments, the control circuit 620 may be configured to control the electromagnetic wave generating system to reduce the power of the electromagnetic waves it generates (for example, by 50%) when the voltage value of the DC signal is greater than the second voltage threshold for the first time during the continued processing stage; and to control the electromagnetic wave generating system to stop working when the voltage value of the DC signal is still greater than the second voltage threshold after the power is reduced, so as to improve safety and user experience.

[0111] In some further embodiments, the detection module 600 may further include a wireless communication circuit 630 .

[0112] The wireless communication circuit 630 can be configured to be electrically connected to the control circuit 620 to send control instructions to the electromagnetic wave generating system and reduce the line connection fixed structure.

[0113] The control circuit 620 can also be configured to control the wireless communication circuit 630 to send a visual or auditory signal to prompt the user to clean the shielding features of the barrel 210, the door body 300 or the swing assembly 220, or to prompt the user to contact after-sales service when the voltage value of the DC signal is greater than a first voltage threshold during the initial matching stage.

[0114] The wireless communication circuit 630 may use a 2.4 GHz low-power wireless device to transmit signals via an inverted-F microstrip antenna.

[0115] In some further embodiments, the detection module 600 may further include a conversion circuit 640 .

[0116] The conversion circuit 640 may be configured to be electrically connected to the rectifier circuit 610 and convert the DC signal into a supply voltage to power the control circuit 620 and the wireless communication circuit 630 , thereby improving the energy utilization of the processing device 100 .

[0117] The conversion circuit 640 may include an energy storage device to store the electrical energy of the shielding feature when no electromagnetic wave leakage occurs in the processing device 100 , thereby further improving the energy utilization rate of the processing device 100 .

[0118] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. An electromagnetic wave processing device, comprising: A cylinder body, used for containing the object to be processed; A door body, used for opening and closing the access opening of the cylinder body; as well as An electromagnetic wave generating system is at least partially disposed in the cylinder or connected to the cylinder to process the object to be processed by electromagnetic waves; wherein, The cylinder is provided with a cylinder shielding feature, the door is provided with a door shielding feature, the cylinder shielding feature and the door shielding feature are electrically connected through a connection shielding feature when the door is in a closed state; and the processing device further comprises: The detection module is configured to be electrically connected to the shielding feature and obtain voltage information to determine whether electromagnetic wave leakage occurs in the processing device according to the voltage information.

2. The electromagnetic wave processing device according to claim 1, wherein: The shielding feature is set to ground; and A connection point where the detection module is electrically connected to the shielding feature is spaced apart from a grounding point of the shielding feature.

3. The electromagnetic wave processing device according to claim 1, wherein: The barrel shielding feature is set to ground; and The detection module is configured to be electrically connected to the door shielding feature.

4. The electromagnetic wave processing device according to claim 1, wherein: The door body comprises: A shielding plate is arranged at the access opening of the cylinder body, serving as at least a part of the shielding feature of the door body; wherein, The detection module is configured to be electrically connected to an edge of the shielding plate.

5. The electromagnetic wave processing device according to claim 4, wherein: The shielding plate comprises: A main body, at least partially disposed within the cylinder, and forming a gap with the cylinder shielding feature extending along the depth direction of the cylinder; and The flange is arranged at the end of the main body close to the access opening and extends outwardly in the radial direction of the access opening; wherein, The detection module is configured to be electrically connected to a portion of the flange located at an end of the gap.

6. The electromagnetic wave processing device according to claim 1, wherein: The door body comprises: Supports; A rear cover, arranged on a side of the support member close to the access opening, and enclosing a containing space with the support member; a shielding plate, disposed in the accommodating space, serving as at least a part of the shielding feature of the door body; and The front cover is arranged on the front side of the support member, and the detection module is fixed to the front cover and is electrically connected to the shielding plate through a receiving structure.

7. The electromagnetic wave processing device according to claim 1, wherein: The detection module comprises: a rectifier circuit, configured to be electrically connected to the shielding feature through a receiving structure and to convert an electrical signal collected by the receiving structure into a DC signal; and The control circuit is configured to be electrically connected to the rectifier circuit and to determine whether electromagnetic wave leakage occurs in the processing device according to voltage information of the DC signal.

8. The electromagnetic wave processing device according to claim 7, wherein: The voltage information includes a voltage value of the DC signal, and the control circuit is configured as follows: In the initial matching stage, when the voltage value is greater than a first voltage threshold, the electromagnetic wave generating system is controlled to stop working; and In the continuing processing stage, when the voltage value is greater than the second voltage threshold, the electromagnetic wave generating system is controlled to reduce the power of the electromagnetic wave generated or stop working; wherein, The power of the electromagnetic wave generated by the electromagnetic wave generating system is greater in the continued processing stage than in the initial matching stage, and the second voltage threshold is greater than the first voltage threshold.

9. The electromagnetic wave processing device according to claim 7, wherein: The detection module also includes: The wireless communication circuit is configured to be electrically connected to the control circuit so as to send control instructions to the electromagnetic wave generating system.

10. The electromagnetic wave processing device according to claim 9, wherein: The detection module also includes: The conversion circuit is configured to be electrically connected to the rectifier circuit and convert the DC signal into a power supply voltage to power the control circuit and the wireless communication circuit.

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