A low-power furniture lock with dual power supplies

Abstract

This utility model discloses a low-power furniture lock with dual power supplies, including: a main battery, a backup battery, a switching module, a power module, a voltage detection module, a control module, and a motor drive module. The main battery and the backup battery are connected to the power module via the switching module. The output terminals of the backup battery and the main battery are respectively connected to the input terminals of the switching module, and the output terminal of the switching module is connected to the input terminal of the power module. The output terminal of the switching module outputs a first output voltage, and the power module outputs a second output voltage. The voltage detection module compares the ratio of the first output voltage to the second output voltage and outputs a first signal or a second signal. The control module is used to: upon receiving the first signal, output the output voltage of the main battery; upon receiving the second signal, output the output voltages of both the main battery and the backup battery. This furniture lock can avoid the predicament of "sudden power failure." This utility model is mainly used in the field of smart lock technology.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, specifically to a low-power furniture lock with dual power supplies. Background Technology

[0002] Most existing furniture locks use a single-battery power supply. This method has significant drawbacks: overloading a single battery accelerates power decay, especially in low-temperature environments or high-frequency use scenarios, potentially leading to sudden power outages. Low-battery warning mechanisms rely on monitoring the voltage of a single battery; when the battery's internal resistance increases, a sudden voltage drop can cause the warning to fail. Traditional battery compartment designs do not consider modular integration, resulting in larger batteries that increase lock body thickness, making them unsuitable for the miniaturized design requirements of modern furniture and limiting embedded installation options. Therefore, existing furniture lock technologies have inherent problems that urgently require industry-wide solutions. Utility Model Content

[0003] This invention provides a low-power furniture lock with dual power supplies to solve one or more technical problems existing in the prior art, and at least provides a beneficial option or creates conditions.

[0004] This utility model provides a low-power furniture lock with dual power supplies, including: a main battery, a backup battery, a switching module, a power module, a voltage detection module, a control module, and a motor drive module; The main battery and the backup battery are connected to the power module through a switching module. The output terminals of the backup battery of the main battery are respectively connected to the input terminals of the switching module, and the output terminal of the switching module is connected to the input terminal of the power module. The switching module outputs a first output voltage, which acts on the input of the power module. The power module outputs a second output voltage to the adapter control module. The first input of the voltage detection module is connected to the output of the switching module, and the second input of the voltage detection module is connected to the output of the power module. The voltage detection module is used to compare the ratio of the first output voltage with the second output voltage. When the ratio of the first output voltage is greater than or equal to the second output voltage, the output terminal of the voltage detection module outputs a first signal and transmits the first signal to the control module. When the ratio of the first output voltage is less than the second output voltage, the output terminal of the voltage detection module outputs a second signal and transmits the second signal to the control module. The control module is used to: when receiving a first signal, control the switching module to output the main battery's output voltage as the first output voltage; when receiving a second signal, control the switching module to output the output voltages of both the main battery and the backup battery as the first output voltage.

[0005] Furthermore, the switching module includes: a main battery interface, a backup battery interface, a first MOSFET, a second MOSFET, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first voltage node, and a ground node; The first interface of the main battery interface is connected to the negative terminal of the main battery and the ground node, respectively. The second interface of the main battery interface is connected to the positive terminal of the main battery, one end of the tenth resistor and the drain of the first MOSFET, respectively. The source of the first MOSFET is connected to the input terminal of the power module through the first voltage node. The other end of the tenth resistor is connected to one end of the eleventh resistor and the gate of the first MOS transistor, the other end of the eleventh resistor is connected to the collector of the first transistor, the base of the first transistor is connected to one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected to the second GPIO interface of the control module, and the emitter of the first transistor and the other end of the first resistor are connected to the ground node. The first interface of the backup battery interface is connected to the negative terminal of the backup battery and the ground node, respectively. The second interface of the backup battery interface is connected to the positive terminal of the backup battery, one end of the twelfth resistor, and the drain of the second MOS transistor, respectively. The source of the second MOS transistor is connected to the input terminal of the power module through the first voltage node. The other end of the twelfth resistor is connected to one end of the thirteenth resistor and the gate of the second MOS transistor. The other end of the thirteenth resistor is connected to the collector of the second transistor. The base of the second transistor is connected to one end of the third resistor and one end of the fourth resistor. The other end of the fourth resistor is connected to the third GPIO interface of the control module. The emitter of the second transistor and the other end of the third resistor are connected to the ground node.

[0006] Furthermore, the switching module also includes: a first anti-reverse diode; the first anti-reverse diode is disposed between the first MOS transistor and the first voltage node, the anode of the first anti-reverse diode is connected to the source of the first MOS transistor, and the cathode of the first anti-reverse diode is connected to the first voltage node.

[0007] Furthermore, the switching module also includes: a second anti-reverse diode; the second anti-reverse diode is disposed between the second MOS transistor and the first voltage node, the anode of the second anti-reverse diode is connected to the source of the second MOS transistor, and the cathode of the second anti-reverse diode is connected to the first voltage node.

[0008] Furthermore, the power module includes: a voltage regulator chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a second voltage node; The first pin of the voltage regulator chip is connected to one end of the first capacitor, one end of the second capacitor, and the first voltage node, respectively. The third pin of the voltage regulator chip is connected to its first pin. The fifth pin of the voltage regulator chip is connected to one end of the fourth capacitor, one end of the fifth capacitor, and the second voltage node, respectively. The fourth pin of the voltage regulator chip is connected to one end of the third capacitor. The second pin of the voltage regulator chip, the other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, and the other end of the fifth capacitor are all connected to the ground node.

[0009] Furthermore, the voltage detection module includes: a comparator chip, a sixth capacitor, a seventh capacitor, a fifth resistor, a sixth resistor, and a seventh resistor; the eighth pin of the comparator chip is connected to one end of the sixth capacitor, one end of the seventh capacitor, the first voltage node, one end of the seventh resistor, and one end of the fifth resistor, respectively; the first pin of the comparator chip is connected to the other end of the seventh resistor and the first GPIO port of the control module, respectively. The second pin of the comparator chip is connected to the second voltage node, and the third pin of the comparator chip is connected to the other end of the fifth resistor and one end of the sixth resistor, respectively; the other end of the sixth capacitor, the other end of the seventh capacitor, the fourth pin of the comparator chip, and the other end of the sixth resistor are respectively connected to the ground node.

[0010] Furthermore, the motor drive module includes: a drive chip and an eighth capacitor; the sixth pin of the drive chip is connected to the fourth GPIO port of the control module, the fifth pin of the drive chip is connected to the fifth GPIO port of the control module, and the fourth pin of the drive chip is connected to the first voltage node; The first pin of the driver chip is connected to one end of the eighth capacitor and one end of the drive motor of the external actuator, respectively; the second pin of the driver chip is connected to the other end of the eighth capacitor and the other end of the drive motor of the external actuator, respectively.

[0011] Furthermore, it also includes an indicator module, which includes an eighth resistor, a ninth resistor, a first LED bead, and a second LED bead; one end of the eighth resistor is connected to the sixth GPIO port of the control module, and the other end of the eighth resistor is connected to the anode of the first LED bead; one end of the ninth resistor is connected to the seventh GPIO port of the control module, and the other end of the ninth resistor is connected to the anode of the second LED bead; the cathodes of the first LED bead and the cathodes of the second LED bead are respectively connected to a ground node.

[0012] Furthermore, the main battery is a lithium battery, and the backup battery is a lithium battery.

[0013] Furthermore, the control module is a control system based on a microcontroller.

[0014] This invention has at least the following beneficial effects: By setting up a main battery and a backup battery, and using a voltage detection module to detect the first and second output voltages, when the output voltage of the main battery is insufficient to support the normal operation of the entire furniture lock, the control module controls the switching module to promptly supplement the output voltage of the backup battery to the output voltage of the main battery, thereby ensuring the furniture lock maintains normal operation and avoiding the predicament of "sudden power failure." This invention is mainly used in the field of smart lock technology. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0016] Figure 1 This is a schematic diagram of the module connection structure of a low-power furniture lock with dual power supplies.

[0017] Figure 2 This is a schematic diagram of the circuit connection structure of the switching module, power supply module, and voltage detection module.

[0018] Figure 3 This is a structural diagram of the motor drive module. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0021] First, let's analyze some of the terms that appear.

[0022] GPIO, short for General-Purpose Input / Output, is a programmable hardware interface whose function is not fixed and whose operating mode can be controlled by software.

[0023] A microcontroller is a chip that integrates all the core components of a microcomputer. It's like a super-miniature computer packaged in a single chip, specifically designed to control and execute specific tasks.

[0024] refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the module connection structure of a low-power furniture lock with dual power supplies. Figure 2 This is a schematic diagram of the circuit connection structure of the switching module, power supply module, and voltage detection module. Figure 3 This is a structural diagram of the motor drive module.

[0025] To this end, this application provides a low-power furniture lock with dual power supplies, including: a main battery 100, a backup battery 200, a switching module 300, a power module 700, a voltage detection module 600, a control module 400, and a motor drive module 500.

[0026] The main battery 100 refers to the component that provides the main power source for the entire furniture lock, and the backup battery 200 refers to the component that provides a backup power source for the entire furniture lock when the voltage of the main battery 100 drops.

[0027] The power module 700 is used to convert the electrical energy from the main battery 100 and the backup battery 200 into a suitable voltage.

[0028] The main battery 100 and the backup battery 200 are connected to the power module 700 through the switching module 300. The output terminal of the backup battery 200 of the main battery 100 is connected to the input terminal of the switching module 300, and the output terminal of the switching module 300 is connected to the input terminal of the power module 700.

[0029] The switching module 300 outputs a first output voltage at its output terminal, which acts on the input terminal of the power module 700. The power module 700 outputs a second output voltage that is compatible with the control module 400.

[0030] The first input terminal of the voltage detection module 600 is connected to the output terminal of the switching module 300, and the second input terminal of the voltage detection module 600 is connected to the output terminal of the power supply module 700.

[0031] The voltage detection module 600 is used to compare the ratio of the first output voltage with the second output voltage. When the ratio of the first output voltage is greater than or equal to the second output voltage, the output terminal of the voltage detection module 600 outputs a first signal and transmits the first signal to the control module 400.

[0032] When the ratio of the first output voltage is less than the second output voltage, the output terminal of the voltage detection module 600 outputs a second signal and transmits the second signal to the control module 400.

[0033] The control module 400 is used to: when receiving a first signal, control the switching module 300 so that the output voltage of the main battery 100 is output as the first output voltage; when receiving a second signal, control the switching module 300 so that the output voltages of the main battery 100 and the backup battery 200 are output as the first output voltage.

[0034] When this furniture lock is working, the voltage detection module 600 acquires the output voltage of the main power supply and the output voltage of the power module 700. The output voltage of the main battery 100 is represented by a first output voltage, while the output voltage of the power module 700 is represented by a second output voltage. In some further embodiments, the second output voltage is 3.3V. The voltage detection module 600 uses the ratio of the first output voltage as a judgment value and the second output voltage as a reference value. When the ratio of the first output voltage is less than the second output voltage, it indicates that the output voltage of the main battery 100 is low, and there is a possibility of insufficient voltage. Therefore, the voltage detection module 600 outputs a second signal to the control module 400 to remind the control module 400 of the insufficient voltage. Conversely, when the ratio of the first output voltage is greater than or equal to the second output voltage, it indicates that the output voltage of the main battery 100 is sufficient. Therefore, the voltage detection module 600 outputs a first signal to the control module 400 to remind the control module 400 that the current output voltage of the main battery 100 is sufficient.

[0035] The control module 400 determines the availability of the backup battery 200 based on received signals. When the control module 400 receives the first signal, it knows that the output voltage of the main battery 100 is sufficient. Therefore, the control module 400 controls the switching module 300 to output the main battery 100's output voltage as the first output voltage. When the control module 400 receives the second signal, it knows that the output voltage of the main battery 100 is insufficient. Therefore, the control module 400 controls the switching module 300 to output both the main battery 100 and the backup battery 200 as the first output voltage. This prevents insufficient power supply to the furniture lock due to insufficient output voltage from the main battery 100.

[0036] This invention utilizes a main battery 100 and a backup battery 200, and a voltage detection module 600 to detect the first and second output voltages. When the output voltage of the main battery 100 is insufficient to support the normal operation of the furniture lock, the control module 400 controls the switching module 300 to promptly supplement the output voltage of the backup battery 200 to the output voltage of the main battery 100, thereby ensuring the furniture lock maintains normal operation and avoiding the predicament of "sudden power failure."

[0037] On the other hand, the design of the main battery 100 and the backup battery 200 in this utility model can create conditions for reducing the size of furniture locks through the dual-battery structure design.

[0038] To fully illustrate this specific solution, the detailed circuit connection structure of each module is provided below.

[0039] The control module 400 is a microcontroller-based control system. In some further specific embodiments, the microcontroller used is an STM32L051C8T6.

[0040] The switching module 300 includes: a main battery interface BAT1, a backup battery interface BAT2, a first MOSFET Q1, a second MOSFET Q2, a first transistor Q3, a second transistor Q4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a first voltage node VCC_6V, and a ground node.

[0041] The first interface of the main battery interface BAT1 is connected to the negative terminal of the main battery 100 and the ground node, respectively. The second interface of the main battery interface BAT1 is connected to the positive terminal of the main battery 100, one end of the tenth resistor R10 and the drain of the first MOSFET Q1, respectively. The source of the first MOSFET Q1 is connected to the input terminal of the power module 700 through the first voltage node VCC_6V.

[0042] The other end of the tenth resistor R10 is connected to one end of the eleventh resistor R11 and the gate of the first MOS transistor Q1. The other end of the eleventh resistor R11 is connected to the collector of the first transistor Q3. The base of the first transistor Q3 is connected to one end of the first resistor R1 and one end of the second resistor R2. The other end of the second resistor R2 is connected to the second GPIO interface PA1 of the control module 400. The emitter of the first transistor Q3 and the other end of the first resistor R1 are connected to the ground node.

[0043] The first interface of the backup battery interface BAT2 is connected to the negative terminal of the backup battery 200 and the ground node, respectively. The second interface of the backup battery interface BAT2 is connected to the positive terminal of the backup battery 200, one end of the twelfth resistor R12, and the drain of the second MOSFET Q2, respectively. The source of the second MOSFET Q2 is connected to the input terminal of the power module 700 through the first voltage node VCC_6V.

[0044] The other end of the twelfth resistor R12 is connected to one end of the thirteenth resistor R13 and the gate of the second MOS transistor Q2. The other end of the thirteenth resistor R13 is connected to the collector of the second transistor Q4. The base of the second transistor Q4 is connected to one end of the third resistor R3 and one end of the fourth resistor R4. The other end of the fourth resistor R4 is connected to the third GPIO interface PA2 of the control module 400. The emitter of the second transistor Q4 and the other end of the third resistor R3 are connected to the ground node.

[0045] To prevent mutual charging between the main battery 100 and the backup battery 200, the switching module 300 further includes a first reverse protection diode D1 and a second reverse protection diode D2. The first reverse protection diode D1 is disposed between the first MOSFET Q1 and the first voltage node VCC_6V. The anode of the first reverse protection diode D1 is connected to the source of the first MOSFET Q1, and the cathode of the first reverse protection diode D1 is connected to the first voltage node VCC_6V. The second reverse protection diode D2 is disposed between the second MOSFET Q2 and the first voltage node VCC_6V. The anode of the second reverse protection diode D2 is connected to the source of the second MOSFET Q2, and the cathode of the second reverse protection diode D2 is connected to the first voltage node VCC_6V.

[0046] In some further specific embodiments, the power module 700 includes: a voltage regulator chip U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a second voltage node VCC_3.3V.

[0047] The first pin of the voltage regulator chip U1 is connected to one end of the first capacitor C1, one end of the second capacitor C2, and the first voltage node VCC_6V. The third pin of the voltage regulator chip U1 is connected to its first pin. The fifth pin of the voltage regulator chip U1 is connected to one end of the fourth capacitor C4, one end of the fifth capacitor C5, and the second voltage node VCC_3.3V. The fourth pin of the voltage regulator chip U1 is connected to one end of the third capacitor C3. The second pin of the voltage regulator chip U1, the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3, the other end of the fourth capacitor C4, and the other end of the fifth capacitor C5 are all connected to the ground node. In some further specific embodiments, the model of the voltage regulator chip U1 is TC1185.

[0048] The voltage detection module 600 includes: a comparator chip U2, a sixth capacitor C6, a seventh capacitor C7, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. The eighth pin of the comparator chip U2 is connected to one end of the sixth capacitor C6, one end of the seventh capacitor C7, the first voltage node VCC_6V, one end of the seventh resistor R7, and one end of the fifth resistor R5, respectively. The first pin of the comparator chip U2 is connected to the other end of the seventh resistor R7 and the first GPIO port PA0 of the control module 400. The second pin of the comparator chip U2 is connected to the second voltage node VCC_3.3V, and the third pin of the comparator chip U2 is connected to the other end of the fifth resistor R5 and one end of the sixth resistor R6, respectively. The other ends of the sixth capacitor C6, the seventh capacitor C7, the fourth pin of the comparator chip U2, and the sixth resistor R6 are connected to ground. In some further specific embodiments, the comparator chip U2 is model LM393DGKR. The second pin of comparator chip U2 is connected to the second voltage node VCC_3.3V to obtain the second output voltage, which is used as a reference value. The fifth resistor R5 and the sixth resistor R6 form a voltage divider circuit and are connected to the first voltage node VCC_6V, inputting the ratio of the first output voltage to the third pin of comparator chip U2. Comparator chip U2 compares the ratio of the first output voltage to the second output voltage and outputs the comparison result to the first GPIO port PA0 of control module 400 through its first pin.

[0049] The motor drive module 500 includes a driver chip U3 and an eighth capacitor C8. In some further embodiments, the driver chip U3 is model MX113H. The sixth pin of the driver chip U3 is connected to the fourth GPIO port PA3 of the control module 400, the fifth pin of the driver chip U3 is connected to the fifth GPIO port PA4 of the control module 400, and the fourth pin of the driver chip U3 is connected to the first voltage node VCC_6V. The first pin of the driver chip U3 is connected to one end of the eighth capacitor C8 and one end of the drive motor 510 of the external actuator; the second pin of the driver chip U3 is connected to the other end of the eighth capacitor C8 and the other end of the drive motor 510 of the external actuator.

[0050] The first GPIO port PA0 of the control module 400 receives the comparison result, which is sent in the form of a first signal or a second signal. If the first signal is received, the output voltage of the main battery 100 is considered sufficient. At this time, the second GPIO port of the control module 400 outputs a high level, turning on the first transistor Q3 and the first MOSFET Q1, and the output voltage of the main battery 100 is applied to the first voltage node VCC_6V. The third GPIO port of the control module 400 outputs a low level, turning off the second transistor Q4 and the second MOSFET Q2.

[0051] Once the second signal is received, it can be assumed that the output voltage of the main battery 100 is insufficient. At this time, the second GPIO port of the control module 400 outputs a high level, the first transistor Q3 conducts, the first MOSFET Q1 conducts, and the output voltage of the main battery 100 is applied to the first voltage node VCC_6V. The third GPIO port of the control module 400 outputs a high level, the second transistor Q4 conducts, and the second MOSFET Q2 conducts. The output voltage of the backup battery 200 is applied to the first voltage node VCC_6V.

[0052] To facilitate awareness of insufficient output voltage from the main battery 100, in some further embodiments, the dual-power low-power furniture lock also includes an indicator module. This indicator module comprises an eighth resistor R8, a ninth resistor R9, a first LED LED1, and a second LED LED2. One end of the eighth resistor R8 is connected to the sixth GPIO port PA5 of the control module 400, and the other end is connected to the anode of the first LED LED1. One end of the ninth resistor R9 is connected to the seventh GPIO port PA6 of the control module 400, and the other end is connected to the anode of the second LED LED2. The cathodes of the first LED LED1 and the second LED LED2 are respectively connected to a ground node.

[0053] When the control module 400 receives the second signal, the sixth GPIO port PA5 and the seventh GPIO port PA6 of the control module 400 can output a high level to light up the first LED LED1 and the second LED LED2. The illumination of the first LED LED1 and the second LED LED2 indicates to the user that the output voltage of the main battery 100 is insufficient, so that the user can replace the main battery 100 in time.

[0054] In some further specific embodiments, the main battery 100 and the backup battery 200 are lithium batteries.

[0055] Although the description of this application has been quite detailed and particularly focused on several described embodiments, it is not intended to limit itself to any of these details or embodiments or any particular embodiment. Rather, it should be considered as effectively covering the intended scope of this application by referring to the appended claims and taking into account the broad possible interpretations of these claims provided by the prior art. Furthermore, the foregoing description of this application with respect to embodiments foreseeable by the inventor is intended to provide a useful description, and non-substantial modifications to this application that have not yet been foreseen may still represent equivalent modifications.

Claims

1. A dual power supply low power consumption furniture lock, characterized in that, include: Main battery, backup battery, switching module, power supply module, voltage detection module, control module and motor drive module; The main battery and the backup battery are connected to the power module through a switching module. The output terminals of the backup battery of the main battery are respectively connected to the input terminals of the switching module, and the output terminal of the switching module is connected to the input terminal of the power module. The switching module outputs a first output voltage, which acts on the input of the power module. The power module outputs a second output voltage to the adapter control module. The first input of the voltage detection module is connected to the output of the switching module, and the second input of the voltage detection module is connected to the output of the power module. The voltage detection module is used to compare the ratio of the first output voltage with the second output voltage. When the ratio of the first output voltage is greater than or equal to the second output voltage, the output terminal of the voltage detection module outputs a first signal and transmits the first signal to the control module. When the ratio of the first output voltage is less than the second output voltage, the output terminal of the voltage detection module outputs a second signal and transmits the second signal to the control module. The control module is used to: when receiving a first signal, control the switching module to output the main battery's output voltage as the first output voltage; when receiving a second signal, control the switching module to output the output voltages of both the main battery and the backup battery as the first output voltage.

2. The dual power supply low power consumption furniture lock according to claim 1, wherein, The switching module includes: a main battery interface, a backup battery interface, a first MOSFET, a second MOSFET, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first voltage node, and a ground node; The first interface of the main battery interface is connected to the negative terminal of the main battery and the ground node, respectively. The second interface of the main battery interface is connected to the positive terminal of the main battery, one end of the tenth resistor and the drain of the first MOSFET, respectively. The source of the first MOSFET is connected to the input terminal of the power module through the first voltage node. The other end of the tenth resistor is connected to one end of the eleventh resistor and the gate of the first MOS transistor, the other end of the eleventh resistor is connected to the collector of the first transistor, the base of the first transistor is connected to one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected to the second GPIO interface of the control module, and the emitter of the first transistor and the other end of the first resistor are connected to the ground node. The first interface of the backup battery interface is connected to the negative terminal of the backup battery and the ground node, respectively. The second interface of the backup battery interface is connected to the positive terminal of the backup battery, one end of the twelfth resistor, and the drain of the second MOS transistor, respectively. The source of the second MOS transistor is connected to the input terminal of the power module through the first voltage node. The other end of the twelfth resistor is connected to one end of the thirteenth resistor and the gate of the second MOS transistor. The other end of the thirteenth resistor is connected to the collector of the second transistor. The base of the second transistor is connected to one end of the third resistor and one end of the fourth resistor. The other end of the fourth resistor is connected to the third GPIO interface of the control module. The emitter of the second transistor and the other end of the third resistor are connected to the ground node.

3. The dual power supply low power consumption furniture lock of claim 2, wherein The switching module further includes: a first anti-reverse diode; the first anti-reverse diode is disposed between the first MOS transistor and the first voltage node, the anode of the first anti-reverse diode is connected to the source of the first MOS transistor, and the cathode of the first anti-reverse diode is connected to the first voltage node.

4. The dual power supply low power consumption furniture lock of claim 2, wherein The switching module further includes: a second anti-reverse diode; the second anti-reverse diode is disposed between the second MOS transistor and the first voltage node, the anode of the second anti-reverse diode is connected to the source of the second MOS transistor, and the cathode of the second anti-reverse diode is connected to the first voltage node.

5. The dual power supply low power consumption furniture lock of claim 1, wherein The power module includes: a voltage regulator chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a second voltage node; The first pin of the voltage regulator chip is connected to one end of the first capacitor, one end of the second capacitor, and the first voltage node, respectively. The third pin of the voltage regulator chip is connected to its first pin. The fifth pin of the voltage regulator chip is connected to one end of the fourth capacitor, one end of the fifth capacitor, and the second voltage node, respectively. The fourth pin of the voltage regulator chip is connected to one end of the third capacitor. The second pin of the voltage regulator chip, the other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, and the other end of the fifth capacitor are respectively connected to the ground node.

6. The dual power supply low power consumption furniture lock of claim 1, wherein The voltage detection module includes: a comparator chip, a sixth capacitor, a seventh capacitor, a fifth resistor, a sixth resistor, and a seventh resistor; The eighth pin of the comparator chip is connected to one end of the sixth capacitor, one end of the seventh capacitor, the first voltage node, one end of the seventh resistor, and one end of the fifth resistor, respectively; the first pin of the comparator chip is connected to the other end of the seventh resistor and the first GPIO port of the control module, respectively. The second pin of the comparator chip is connected to the second voltage node, and the third pin of the comparator chip is connected to the other end of the fifth resistor and one end of the sixth resistor, respectively; the other end of the sixth capacitor, the other end of the seventh capacitor, the fourth pin of the comparator chip, and the other end of the sixth resistor are respectively connected to the ground node.

7. The dual power supply low power consumption furniture lock of claim 1, wherein The motor drive module includes: a drive chip and an eighth capacitor; The sixth pin of the driver chip is connected to the fourth GPIO port of the control module, the fifth pin of the driver chip is connected to the fifth GPIO port of the control module, and the fourth pin of the driver chip is connected to the first voltage node. The first pin of the driver chip is connected to one end of the eighth capacitor and one end of the drive motor of the external actuator, respectively; the second pin of the driver chip is connected to the other end of the eighth capacitor and the other end of the drive motor of the external actuator, respectively.

8. The dual power supply low power consumption furniture lock of claim 1, wherein, It also includes an indicator module, which includes: an eighth resistor, a ninth resistor, a first LED bead, and a second LED bead; One end of the eighth resistor is connected to the sixth GPIO port of the control module, and the other end of the eighth resistor is connected to the anode of the first LED. One end of the ninth resistor is connected to the seventh GPIO port of the control module, and the other end of the ninth resistor is connected to the anode of the second LED. The cathodes of the first LED and the second LED are respectively connected to the ground node.

9. The dual power supply low power consumption furniture lock of claim 1, wherein, The main battery is a lithium battery, and the backup battery is a lithium battery.

10. The dual power supply low power consumption furniture lock of claim 1, wherein, The control module is a control system based on a microcontroller.

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