CN217845215U

CN217845215U - Sensor with a sensor element

Info

Publication number: CN217845215U
Application number: CN202221519869.3U
Authority: CN
Inventors: 彭文福
Original assignee: Shenzhen Topband Co Ltd
Current assignee: Shenzhen Topband Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-18
Anticipated expiration: 2032-06-17

Abstract

The application relates to a sensor comprising: the Hall reset circuit outputs a level signal and turns over the output level signal when sensing a magnetic field; the main control circuit carries out reset operation when the received level signal is turned over; the Hall reset circuit is connected with the main control circuit. By adding the Hall reset circuit, the output level signal is changed when a magnetic field is induced, and the main control circuit carries out reset operation when the received level signal is overturned. The user only needs to place the object of taking the magnetic field near the sensor alright realize resetting to the sensor, also can accomplish the operation that resets to the sensor that waterproof requirement is high, can not lead to the resetting of other equipment moreover, has improved the operation accuracy that resets.

Description

Sensor with a sensor element

Technical Field

The application relates to the technical field of data detection equipment, in particular to a sensor.

Background

With the development of technology and the need of practical scenes, various sensors with high waterproof requirements appear. For example, the lighting device detects ambient environment information through a sensor, and automatically controls the on and off of the lamp according to the ambient environment information. When the sensor needs to be reset, the sensor is generally reset by pressing by using a mechanical switch, and the sensor with high waterproof requirement is generally in a full-sealing structure and cannot be reset by pressing by using the mechanical switch.

Aiming at a sensor with high waterproof requirement, the traditional reset mode is to use infrared remote control to process, and when the infrared remote control is reset, equipment which does not need to be reset is easily reset correspondingly, and the defect of low accuracy of reset operation exists.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a sensor that can improve the accuracy of the reset operation.

A sensor, comprising:

the Hall reset circuit outputs a level signal and turns over the output level signal when a magnetic field is induced;

the main control circuit carries out reset operation when the received level signal is turned over; the Hall reset circuit is connected with the main control circuit.

In one embodiment, the sensor further comprises an environmental information detection circuit connected with the master control circuit.

In one embodiment, the environmental information detection circuit comprises an illumination detection circuit connected to the master control circuit.

In one embodiment, the environment information detection circuit comprises a movement detection circuit connected to the master control circuit.

In one embodiment, the sensor further comprises a power supply circuit, and the power supply circuit is connected with the hall reset circuit, the main control circuit and the environmental information detection circuit.

In one embodiment, the sensor further comprises an input and output circuit, the input and output circuit is connected with the main control circuit, the power supply circuit and a driving power supply, and the driving power supply is connected with the controlled lamp.

In one embodiment, the power supply circuit comprises a power supply chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a diode, an inductor and a voltage regulator tube;

the enabling end of the power supply chip is connected with the input and output circuit through the first resistor and is grounded through the second resistor; the feedback end of the power supply chip is grounded through the third resistor, and the grounding end of the power supply chip is grounded; the input end of the power supply chip is connected with the input-output circuit, the output end of the power supply chip is connected with the first end of the inductor, the second end of the inductor is connected with the feedback end of the power supply chip through the fourth resistor, and the second end of the inductor is connected with the Hall reset circuit, the main control circuit and the environment information detection circuit;

the cathode of the diode is connected with the output end of the power supply chip, and the anode of the diode is grounded; the cathode of the voltage-stabilizing tube is connected with the second end of the inductor, and the anode of the voltage-stabilizing tube is grounded through the fifth resistor.

In one embodiment, the power supply circuit further includes a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, one end of the first capacitor is connected to the input end of the power supply chip, and the other end of the first capacitor is grounded; and after the second capacitor, the third capacitor and the fourth capacitor are connected in parallel, one end of the second capacitor, the third capacitor and the fourth capacitor is connected with the second end of the inductor, and the other end of the second capacitor, the third capacitor and the fourth capacitor is grounded.

In one embodiment, the master control circuit comprises an IOT module, and the IOT module is connected with the hall reset circuit.

In one embodiment, the hall reset circuit comprises a hall sensor and a sixth resistor, and the hall sensor is connected with the main control circuit through the sixth resistor.

According to the sensor, the Hall reset circuit is additionally arranged, the output level signal is changed when the Hall reset circuit senses a magnetic field, and the main control circuit carries out reset operation when the received level signal is turned over. The user only need place near the sensor and take magnetic object alright realize the reset to the sensor, also can accomplish the operation that resets to the sensor that waterproof requirement is high, can not lead to the resetting of other equipment moreover, has improved the operation accuracy that resets.

Drawings

FIG. 1 is a block diagram of a sensor in one embodiment;

FIG. 2 is a block diagram of a sensor in another embodiment;

FIG. 3 is a block diagram of an embodiment of a host circuit and an environmental information detection circuit;

FIG. 4 is a block diagram showing the structure of a sensor in still another embodiment;

FIG. 5 is a schematic diagram of the power supply circuit in one embodiment;

FIG. 6 is a schematic diagram of a master control circuit according to an embodiment;

FIG. 7 is a schematic diagram of a Hall reset circuit according to an embodiment;

FIG. 8 is a schematic diagram of the structure of a motion detection circuit in one embodiment;

FIG. 9 is a schematic diagram of an embodiment of an illumination detection circuit;

FIG. 10 is a schematic diagram of an input/output circuit according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, a sensor is provided, which includes a main control circuit 120 and a hall reset circuit 130, wherein the hall reset circuit 130 is connected to the main control circuit 120. The hall reset circuit 130 outputs a level signal, and inverts the output level signal when sensing a magnetic field; the main control circuit 120 performs a reset operation when the received level signal is inverted. Specifically, the sensor is a sensor having waterproof and resetting requirements, such as a light control sensor with a waterproof grade of IP65 or above, and for understanding, the light control sensor is explained as an example below.

The hall reset circuit 130 is used for detecting a magnetic field and outputting a corresponding level signal to the main control circuit 120 according to whether the magnetic field is detected. When there is no strong magnetic field near the hall reset circuit 130, the hall reset circuit 130 outputs a high level or a low level to the main control circuit 120; when a strong magnetic field occurs near the hall reset circuit 130, the hall reset circuit 130 inverts the output level signal and outputs a low level or a high level to the main control circuit 120. When the sensor needs to be reset, a user can place a strong magnetic field object such as a magnet near the sensor, so that the hall reset circuit 130 inverts the output level signal, and when the main control circuit 120 detects that the level signal output by the hall reset circuit 130 is inverted, it is determined that the reset operation needs to be executed, the stored information is cleared and restored to a preset factory state, and the reset process is completed.

In the sensor, the hall reset circuit 130 is added to change the output level signal when the magnetic field is sensed, and the main control circuit 120 performs a reset operation when the received level signal is inverted. The user only need place near the sensor and take magnetic object alright realize the reset to the sensor, also can accomplish the operation that resets to the sensor that waterproof requirement is high, can not lead to the resetting of other equipment moreover, has improved the operation accuracy that resets.

In one embodiment, as shown in fig. 2, the sensor further includes an environmental information detection circuit 140 connected to the master control circuit 120. The environment information detection circuit 140 detects the environment information and sends the environment information to the main control circuit 120, and the main control circuit 120 performs corresponding control according to the environment information. Also taking the lamp control sensor as an example, the main control circuit 120 may control the controlled lamp according to the detected environmental information, for example, control the on/off of the controlled lamp, and adjust the brightness, the color temperature, etc. of the controlled lamp. The environmental information may be ambient light intensity, ambient temperature, movement information, or the like.

In one embodiment, as shown in FIG. 3, the environmental information detection circuit 140 includes a movement detection circuit 142 coupled to the master control circuit 120. The movement detection circuit is used for detecting a moving human body signal around the sensor, and the main control circuit 120 can control the controlled lamp to be turned on when it is determined that a person approaches the controlled lamp according to the signal detected by the movement detection circuit 142.

In one embodiment, the environmental information detection circuit 140 includes an illumination detection circuit 144 coupled to the master control circuit 120. The illumination detection circuit 144 is configured to detect an illumination data value of an environment where the sensor is located, and the main control circuit 120 may control the controlled lamp to be turned on when the illumination data value detected by the illumination detection circuit 144 is smaller than a preset threshold.

Further, in one embodiment, as shown in fig. 4, the environmental information detection circuit 140 may also include both the movement detection circuit 142 and the illumination detection circuit 144. Correspondingly, the main control circuit 120 obtains the signal detected by the movement detection circuit 142 and the illumination data value detected by the illumination detection circuit 144, and through the detection data processing, correspondingly controls the on/off of the controlled lamp, and adjusts the brightness, color temperature, etc. of the controlled lamp.

In one embodiment, as shown in fig. 2 and 4, the sensor further includes a power supply circuit 110, and the power supply circuit 110 is connected to the main control circuit 120, the hall reset circuit 130, and the environmental information detection circuit 140. Specifically, the power supply circuit 110 may employ an energy storage element, and the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144 are powered according to the stored electric energy, and the energy storage element may be an energy storage battery, an energy storage capacitor, or the like. The power supply circuit 110 may be connected to an external power source, process the received voltage, and transmit the processed voltage to the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144 to supply power. The external power source may convert the commercial power into direct current and transmit the direct current to the power supply circuit 110, or the external power source may use a solar photovoltaic module and generate direct current by using solar energy and transmit the direct current to the power supply circuit 110.

In one embodiment, the sensor further comprises an input/output circuit 150, wherein the input/output circuit 150 is connected to the power supply circuit 110, the main control circuit 120 and a driving power supply, and the driving power supply is connected to the controlled lamp. Specifically, the power supply circuit 110 is connected to an external power source through the input/output circuit 150, and processes the input voltage to supply power to the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144. The main control circuit 120 can also output a control signal to a driving power supply outside the sensor through the input/output circuit 150, and control the driving power supply to adjust the controlled lamp. The external power supply can be a driving power supply directly supplying power to the controlled lamp, and can also be other power supplies. The main control circuit 120 may output a PWM (Pulse width modulation) signal to adjust the brightness and/or the color temperature of the controlled lamp. Specifically, if the brightness of the controlled lamp is controllable, the main control circuit 120 outputs a PWM signal to adjust the brightness of the controlled lamp; if the color temperature of the controlled lamp is controllable, the main control circuit 120 outputs a PWM signal to adjust the color temperature of the controlled lamp; if the brightness and the color temperature of the controlled lamp are controllable, the control signal output by the main control circuit 120 may specifically include two PWM signals, where one PWM signal is used to adjust the brightness of the controlled lamp, and the other PWM signal is used to adjust the color temperature of the controlled lamp.

The specific structure of the power supply circuit 110 is not exclusive, and in one embodiment, as shown in fig. 5, the power supply circuit 110 includes a power supply chip IC1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a diode D1, an inductor L1, and a voltage regulator ZD1.

The enable end EN of the power supply chip IC1 is connected with the input/output circuit 150 through a first resistor R1 and is grounded through a second resistor R2; the feedback end FB of the power supply chip IC1 is grounded through a third resistor R3, and the grounding end GND of the power supply chip IC1 is grounded; the input end IN of the power supply chip IC1 is connected to the input/output circuit 150, the output end SW of the power supply chip IC1 is connected to the first end of the inductor L1, the second end of the inductor L1 is connected to the feedback end FB of the power supply chip IC1 through the fourth resistor R4, and the second end of the inductor L1 is connected to the main control circuit 120, the hall reset circuit 130 and the environmental information detection circuit 140. The cathode K of the diode D1 is connected with the output end SW of the power supply chip IC1, and the anode A of the diode D1 is grounded; the cathode of the voltage-regulator tube ZD1 is connected with the second end of the inductor L2, and the anode of the voltage-regulator tube ZD1 is grounded through a fifth resistor R5.

The 12V voltage input by the input/output circuit 150 is transmitted to the input terminal IN of the power supply chip IC1, and the 12V voltage is further divided by the first resistor R1 and the second resistor R2 and then transmitted to the enable terminal EN of the power supply chip IC 1. The second terminal of the inductor L1 is used as a power supply terminal of the power supply circuit 110, and outputs a voltage of 3.3V to the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144 for power supply. The voltage of the power supply terminal of the power supply circuit 110 is divided and sampled by the third resistor R3 and the fourth resistor R4 and then is transmitted to the feedback terminal FB of the power supply chip IC1, so that the power supply chip IC1 performs output voltage regulation. The zener diode ZD1 is turned on when the voltage at the power supply terminal of the power supply circuit 110 is greater than the breakdown voltage, so as to prevent the voltage output by the power supply circuit 110 from being too high and damaging the back-end circuit device.

Further, the power supply circuit 110 further includes a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4, wherein one end of the first capacitor C1 is connected to the input terminal IN of the power supply chip IC1, and the other end of the first capacitor C1 is grounded. The 12V voltage input by the input/output circuit 150 is filtered by the first capacitor C1 and then transmitted to the input terminal IN of the power supply chip IC 1. After the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 are connected in parallel, one end of the second capacitor is connected to the second end of the inductor L1, and the other end of the second capacitor is grounded. The voltage output by the output terminal SW of the power supply chip IC1 is filtered by the inductor L1 and then by the second capacitor C2, the third capacitor C3, and the fourth capacitor C4, and then is output from the power supply terminal of the power supply circuit 110 to the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144 for power supply.

In one embodiment, the master control circuit 120 includes a master control chip. As shown in fig. 6, the main control chip may specifically adopt an IOT (Internet Of Things) module U2, and the IOT module U2 is connected to the hall reset circuit 130. Specifically, pin 2 of the IOT module U2 is connected to the hall reset circuit 130 through the terminal RST, and pin 10 of the IOT module U2 is connected to the power supply terminal of the power supply circuit 110, and receives a voltage of 3.3V. The pin 11 of the IOT module U2 is connected to the illumination detection circuit 144 through the LIGHT terminal, and the pin 12 of the IOT module U2 is connected to the movement detection circuit 142 through the PIR _ D terminal. Pin 18 of IOT module U2 is connected to input/output circuit 150 via terminal PWM _ C, and transmits a PWM signal to the driving power supply to adjust the color temperature of the controlled lamp. Pin 19 of IOT module U2 is connected to input/output circuit 150 via terminal PWM _ L, and transmits a PWM signal to the driving power supply to adjust the brightness of the controlled lamp.

In addition, as shown in fig. 6, the main control circuit 120 may further include a burning interface CN2 and a debugging interface (not shown in the figure), the pin 8 of the IOT module U2 is connected to the burning interface CN2 through the terminal SWS, and the burning interface CN2 is used for connecting an upper computer, so that the upper computer can perform program burning on the IOT module U2. Pin 5 of IOT module U2 passes through terminal TX and connects the debugging interface, and pin 6 of IOT module U2 passes through terminal RX and connects the debugging interface, and the accessible debugging interface is debugged IOT module U2. Further, the power supply circuit 110, the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, the illumination detection circuit 144, and the input/output circuit 150 are all disposed on the sensor main control board inside the sensor, and the burning interface CN2 and the debugging interface are also packaged on the sensor main control board inside the sensor.

In one embodiment, as shown in fig. 7, the hall reset circuit 130 includes a hall sensor U3 and a sixth resistor R6, and the hall sensor U3 is connected to the main control circuit 120 through the sixth resistor R6. Specifically, pin 3 of hall sensor U3 is connected to the power supply terminal of power supply circuit 110, pin 2 of hall sensor U3 is connected to pin 2 of IOT module U2 through sixth resistor R6, and pin 1 of hall sensor U3 is grounded. The Hall sensor U3 is an element for detecting a magnetic field, when the Hall sensor U3 has no strong magnetic field nearby, the pin 2 of the Hall sensor U3 is stabilized to be in a high level or low level state, and when the Hall sensor U2 has a strong magnetic field nearby, the pin 2 of the Hall sensor U3 is turned into a low level or high level state from the original normal stable level. According to the level state of the pin 2 of the IOT module U2, the IOT module U2 can accurately recognize whether the reset operation needs to be performed.

In one embodiment, as shown in fig. 8, the movement detection circuit 142 includes a detection sensor IC2 and a seventh resistor R7, and the detection sensor IC2 is connected to the main control circuit 120 through the seventh resistor R7. Wherein, the detection sensor IC2 can specifically adopt an infrared pyroelectric sensor to detect infrared rays emitted by people and convert the infrared rays into electric signals for output. Further, the movement detection circuit 142 may further include a fifth capacitor C5, a reset terminal RET of the detection sensor IC2 is connected to one end of a seventh resistor R7, and the other end of the seventh resistor R7 is connected to the pin 12 of the IOT module U2. The power supply terminal VCC of the detection sensor IC2 is connected to the power supply terminal of the power supply circuit 110, and the ground terminal GND of the detection sensor IC2 is grounded. One end of the fifth capacitor C5 is connected to the power supply terminal VCC of the detection sensor IC2, the other end of the fifth capacitor C5 is grounded, and the voltage output by the power supply terminal of the power supply circuit 110 is filtered by the fifth capacitor C5 and then supplies power to the detection sensor IC 2.

In one embodiment, as shown in fig. 9, the illumination detection circuit 144 includes a photodiode IC3, an eighth resistor R8 and a ninth resistor R9, wherein an anode of the photodiode IC3 is connected to the power supply circuit 110, and a cathode of the photodiode IC3 is connected to the main control circuit 120 through the eighth resistor R8 and is grounded through the ninth resistor R9. The anode of the photodiode IC3 is connected to the power supply terminal of the power supply circuit 110, and the cathode of the photodiode IC3 is connected to the pin 11 of the IOT module U2 through the eighth resistor R8. The on-off state of the photodiode IC3 can be changed due to different illumination of the environment where the sensor is located, and the controlled lamp can be adjusted according to the actual environment illumination intensity according to the level state of the pin 11 of the IOT module U2.

In addition, in an embodiment, as shown in fig. 10, the input/output circuit 150 includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and an external interface CN1, where the external interface CN1 is used to be connected to a driving power supply, the tenth resistor R10 is connected in series with the eleventh resistor R11 and then connected to the master control circuit 120 at a common end, specifically connected to the pin 18 of the IOT module U2, the other end of the tenth resistor R10 is connected to the pin 3 of the external interface CN1, and the other end of the eleventh resistor R11 is grounded. The common end of the twelfth resistor R12 and the thirteenth resistor R13 is connected to the main control circuit 120, specifically to the pin 19 of the IOT module U2, the other end of the twelfth resistor R12 is connected to the pin 2 of the external interface CN1, and the other end of the thirteenth resistor R13 is grounded. Pin 1 of the external interface CN1 is connected to the first resistor R1 IN the power supply circuit 110 and the input terminal IN of the power supply chip IC1, and pin 4 of the external interface CN1 is grounded. The external interface CN1 serves as an external interface of the sensor, and is used for accessing external direct current to be transmitted to the power supply circuit 110, and transmitting the control signal output by the main control circuit 120 to the driving power supply connected to the controlled lamp.

To facilitate a better understanding of the above-described sensors, a detailed explanation is provided below in connection with specific embodiments.

At present, for the resetting of a sensor with high waterproof grade, the resetting is mainly carried out by using an infrared remote control mode. The infrared remote control resetting mode needs to meet the following two conditions: 1. an infrared receiving head is added in the sensor at the early stage. 2. An infrared remote control needs to be provided for this reset. Meanwhile, due to the infrared remote control mode, when the infrared remote control device emits a signal, the infrared signal is reflected like visible light, and corresponding resetting of the device which does not need to be reset is possible. In addition, due to the characteristic of being impermeable to opaque substances, the infrared receiver part must be subjected to light transmission treatment during the production process. Based on this, this application directly adopts the scheme of built-in hall element, has guaranteed the accuracy that resets, no longer has too high requirement to the light transmissivity of material simultaneously, has reduced the cost input, and is cheaper than infrared remote controller price to the input of auxiliary device magnet, also acquires more easily.

Specifically, as shown in fig. 2 to fig. 4, the sensor provided by the present application includes a power supply circuit 110, a main control circuit 120, a hall reset circuit 130, a movement detection circuit 142, an illumination detection circuit 144, and an input/output circuit 150, where the power supply circuit 110 supplies power to the main control circuit 120, the hall reset circuit 130, the movement detection circuit 142, and the illumination detection circuit 144. The main control circuit 120 is responsible for the control logic and detection data processing of the whole sensor, the movement detection circuit 142 detects a movement human body signal, and the illumination detection circuit 144 detects an illumination data value of the environment where the sensor is located. The hall reset circuit 130 is mainly responsible for detecting a strong magnetic field. The hall sensor employed in the hall reset circuit 130 is an element for detecting a magnetic field, when there is no strong magnetic field near the hall sensor, a high level or low level state is stabilized at the output port of the hall sensor, and when there is a strong magnetic field near the hall sensor, the output port of the hall sensor is turned from the original normal stable level to a low level or high level state. At this time, in the main control circuit 120, since the main control chip has an IO (input/output port) port connected to the output port of the hall sensor, the level of the IO port of the main control chip will also be reversed. After the main control chip detects the overturning signal, when the main control chip continuously detects that the level is overturned within a period of time, the main control chip considers that an object with a strong magnetic field is artificially placed near the sensor to require the sensor to reset. And after the main control chip finishes the judgment, all the stored information is cleared, the factory state is restored, and the resetting process is finished.

The problem that this application was solved is: how to reset the whole sensor in the sealed sensor, the Hall sensor for detecting the magnetic field is added on the main control panel of the sensor, and a reset signal is transmitted to the main control chip under the condition of not contacting or using an infrared data transmission mode, so that the reset process is completed. Compared with an infrared remote control reset mode, the reset mode adopting the magnetic field detection mode is simpler and more convenient, the light transmission of the sensor shell material is not limited any more, and the material selection cost is reduced; the initial investment cost is reduced without a remote controller; meanwhile, no infrared reflection occurs, and the accuracy of the resetting process is improved in a determined resetting mode.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A sensor, comprising:

the Hall reset circuit outputs a level signal and turns over the output level signal when sensing a magnetic field;

the main control circuit carries out reset operation when the received level signal is overturned; the Hall reset circuit is connected with the main control circuit.

2. The sensor of claim 1, further comprising an environmental information detection circuit coupled to the master control circuit.

3. The sensor of claim 2, wherein the environmental information detection circuit comprises a light detection circuit coupled to the master control circuit.

4. The sensor of claim 2, wherein the environmental information detection circuit comprises a movement detection circuit coupled to the master control circuit.

5. The sensor of claim 2, further comprising a power supply circuit, wherein the power supply circuit is connected to the hall reset circuit, the master control circuit, and the environmental information detection circuit.

6. The sensor of claim 5, further comprising an input-output circuit, wherein the input-output circuit is connected with the master control circuit, the power supply circuit and a driving power supply, and the driving power supply is connected with a controlled lamp.

7. The sensor of claim 6, wherein the power supply circuit comprises a power supply chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a diode, an inductor and a voltage regulator tube;

the enabling end of the power supply chip is connected with the input/output circuit through the first resistor and is grounded through the second resistor; the feedback end of the power supply chip is grounded through the third resistor, and the grounding end of the power supply chip is grounded; the input end of the power supply chip is connected with the input-output circuit, the output end of the power supply chip is connected with the first end of the inductor, the second end of the inductor is connected with the feedback end of the power supply chip through the fourth resistor, and the second end of the inductor is connected with the Hall reset circuit, the main control circuit and the environment information detection circuit;

8. The sensor of claim 7, wherein the power supply circuit further comprises a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, one end of the first capacitor is connected to the input end of the power supply chip, and the other end of the first capacitor is grounded; and after the second capacitor, the third capacitor and the fourth capacitor are connected in parallel, one end of the second capacitor, the third capacitor and the fourth capacitor is connected with the second end of the inductor, and the other end of the second capacitor, the third capacitor and the fourth capacitor is grounded.

9. The sensor of any one of claims 1-8, wherein the master control circuit comprises an IOT module, and wherein the IOT module is coupled to the hall reset circuit.

10. The sensor according to any one of claims 1 to 8, wherein the Hall reset circuit comprises a Hall sensor and a sixth resistor, and the Hall sensor is connected with the main control circuit through the sixth resistor.