Water leakage protection circuit, electronic equipment and robot

Abstract

The invention provides a water leakage protection circuit, electronic equipment and a robot, the water leakage protection circuit comprises a first power supply circuit, a water leakage detection circuit and a control module, and the water leakage detection circuit is arranged in the electronic equipment and is used for outputting a water leakage signal when detecting that water enters the electronic equipment; when the control module is in a working state and does not receive a water leakage signal output by the water leakage detection circuit, the control module is used for continuously outputting a power supply locking signal to the first power supply circuit so as to control the first power supply circuit to keep providing a working voltage to the control module, so that the control module can keep the working state after receiving the working voltage; when the control module is in the working state and receives the water leakage signal output by the water leakage detection circuit, the control module stops outputting the power supply locking signal to the first power supply circuit, so that the first power supply circuit stops providing the working voltage to the control module, and the control module is powered off. The water leakage protection circuit provided by the invention can improve the safety of the electronic equipment.

Description

Technical Field

[0001] The present application relates to the technical field of water leakage protection, and in particular to a water leakage protection circuit, electronic equipment and a robot. Background Art

[0002] When the swimming pool machine is working underwater, the controller may leak due to sealing failure and other reasons, causing damage to the electronic components inside the controller. Summary of the invention

[0003] The present application provides a water leakage protection circuit, an electronic device and a robot, which can solve the above-mentioned technical problems.

[0004] In a first aspect, the present application provides a water leakage protection circuit, which is applied to electronic equipment, and includes:

[0005] a first power supply circuit;

[0006] a water leakage detection circuit, disposed inside the electronic device, for outputting a water leakage signal when detecting water ingress into the electronic device; and

[0007] The control module is electrically connected to the water leakage detection circuit and the first power supply circuit. When the control module is in a working state and has not received a water leakage signal output by the water leakage detection circuit, the control module is used to continuously output a power supply locking signal to the first power supply circuit to control the first power supply circuit to keep providing the working voltage to the control module, so that the control module receives the working voltage and can maintain the working state; when the control module is in a working state and receives a water leakage signal output by the water leakage detection circuit, the control module stops outputting the power supply locking signal to the first power supply circuit, so that the first power supply circuit stops providing the working voltage to the control module, thereby causing the control module to lose power.

[0008] The water leakage protection circuit provided in the present application is configured such that the water leakage detection circuit is arranged inside the electronic device, and the water leakage detection circuit outputs a water leakage signal to the control module when water is detected to have entered the electronic device, so that the control module stops outputting the power supply locking signal to the first power supply circuit, so that the first power supply circuit stops providing the operating voltage to the control module, thereby causing the control module to lose power. In this way, after water enters the electronic device, the power supply of the control module can be automatically cut off, thereby preventing the control module from being damaged by a short circuit failure, thereby improving the safety of the electronic device.

[0009] In some embodiments, the water leakage protection circuit also includes a power-on circuit, which is electrically connected to the first power supply circuit. The power-on circuit outputs a power-on signal to the first power supply circuit in response to a power-on operation to trigger the first power supply circuit to provide an operating voltage to the control module, thereby allowing the control module to enter a working state; after the power-on operation is completed, the power-on circuit stops outputting the power-on signal to the first power supply circuit.

[0010] In some embodiments, the water leakage protection circuit also includes a storage module, which is electrically connected to the control module; the control module is also used to send an alarm instruction to the storage module when it is in a working state and receives the water leakage signal, so as to store the alarm instruction in the storage module.

[0011] In some embodiments, the water leakage protection circuit further includes a communication module, and the control module is further configured to send a water leakage alarm message to the mobile terminal through the communication module when the alarm instruction is read; and / or

[0012] The water leakage protection circuit also includes an alarm module, and the control module is further used to control the alarm module to send out an alarm signal when the alarm instruction is read.

[0013] In some embodiments, the first power supply circuit includes a first switch unit, which is electrically connected to the power supply module, the control module and the power-on circuit. When the first switch unit receives the power lock signal output by the control module and / or the power-on signal output by the power-on circuit, the first switch unit conducts the electrical connection between the power supply module and the control module, so that the power supply module provides the operating voltage to the control module.

[0014] In some embodiments, the first switch unit includes:

[0015] A first switch tube, comprising a control end, a first connection end and a second connection end; the first connection end of the first switch tube is electrically connected to the power module, and the second connection end of the first switch tube is electrically connected to the control module; and

[0016] A second switch tube, comprising a control end, a first connection end and a second connection end; the first connection end of the second switch tube is grounded, the second connection end of the second switch tube is electrically connected to the control end of the first switch tube, and the control end of the second switch tube is electrically connected to the control module and the power-on circuit;

[0017] The second switch tube is turned on in response to the power lock signal output by the control module and / or the power-on signal output by the power-on circuit, so that the control end of the first switch tube is grounded, thereby enabling the first switch tube to conduct the electrical connection between the power module and the control module.

[0018] In some embodiments, the water leakage detection circuit includes:

[0019] A signal output terminal, electrically connected to the control module;

[0020] a first conductive member;

[0021] a second conductive member, grounded and spaced apart from the first conductive member; and

[0022] The second switch unit is electrically connected to both the first conductive member and the signal output end. When the first conductive member and the second conductive member are short-circuited, the second switch unit enables the signal output end to output the water leakage signal to the control module.

[0023] In some embodiments, the second switch unit includes:

[0024] A detection voltage terminal, used for receiving a detection voltage;

[0025] A third switch tube, comprising a control end, a first connection end and a second connection end, wherein the first connection end of the third switch tube is electrically connected to the detection voltage end, and the second connection end of the third switch tube is electrically connected to the signal output end; and

[0026] a fourth switch tube, comprising a control end, a first connection end and a second connection end, wherein the first connection end of the fourth switch tube is electrically connected to the control end of the third switch tube, the second connection end of the fourth switch tube is electrically connected to the second connection end of the third switch tube, and the control end of the fourth switch tube is electrically connected to the first conductive member;

[0027] When the first conductive member is short-circuited with the second conductive member, the fourth switch tube is triggered to conduct the electrical connection between the control end of the third switch tube and the second connection end of the third switch tube, thereby triggering the third switch tube to conduct the electrical connection between the detection voltage end and the signal output end, thereby causing the signal output end to output the water leakage signal.

[0028] In some embodiments, the power-on circuit includes a button assembly, a first end of the button assembly is used to receive a button voltage, a second end of the button assembly is electrically connected to the first power supply circuit, the button assembly is turned on when pressed and outputs the power-on signal to the first power supply circuit, and stops outputting the power-on signal after the pressing ends; wherein the power-on operation received by the power-on circuit is a pressing operation received by the button assembly.

[0029] In some embodiments, the water leakage protection circuit also includes a second power supply circuit, which is electrically connected to the power module and the button assembly, and the second power supply circuit is used to convert the power supply voltage provided by the power module into the button voltage and output it to the button assembly.

[0030] In some embodiments, the second power supply circuit includes:

[0031] a fifth switch tube, comprising a first connection end and a second connection end; the first connection end of the fifth switch tube is electrically connected to the power module; and

[0032] A voltage conversion unit, electrically connected between the second connection end of the fifth switch tube and the key assembly;

[0033] When the fifth switch tube receives the power supply voltage provided by the power supply module, it turns on the electrical connection between the power supply module and the voltage conversion unit, so that the voltage conversion unit receives the power supply voltage provided by the power supply module through the turned-on fifth switch tube, and converts the power supply voltage into the key voltage and outputs it to the key component.

[0034] In a second aspect, the present application provides an electronic device, the electronic device comprising:

[0035] a housing; and

[0036] As in the water leakage protection circuit described in the first aspect above, the water leakage detection circuit of the water leakage protection circuit is arranged inside the shell.

[0037] In a third aspect, the present application provides a robot, comprising the water leakage protection circuit as described in the first aspect above.

[0038] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a first topological structure diagram of the water leakage protection circuit provided in the embodiment of the present application;

[0040] Figure 2This is a second topological structure diagram of the water leakage protection circuit provided in the embodiment of the present application;

[0041] Figure 3 yes Figure 2 A circuit structure diagram of a first power supply circuit in the water leakage protection circuit shown;

[0042] Figure 4 yes Figure 2 The circuit structure diagram of the water leakage detection circuit in the water leakage protection circuit shown;

[0043] Figure 5 yes Figure 2 The circuit structure diagram of the power-on circuit in the water leakage protection circuit shown;

[0044] Figure 6 yes Figure 2 A circuit structure diagram of a second power supply circuit in the water leakage protection circuit shown;

[0045] Figure 7 It is a topological structure diagram of the electronic device provided in the embodiment of the present application.

[0046] The following specific implementation methods will illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings. The term "connection" in this application, unless otherwise specified, mainly refers to a physical structural connection, and may also include meanings such as direct connection or indirect connection when specified. The terms "first" and "second" in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the term "includes" and any variations thereof are intended to cover non-exclusive inclusions.

[0049] See also Figure 1 , Figure 1 1 is a topological structure diagram of a water leakage protection circuit provided in an embodiment of the present application. The present application provides a water leakage protection circuit 1, and the water leakage protection circuit 1 is applied to an electronic device 100. Figure 1As shown, the water leakage protection circuit 1 includes a first power supply circuit 10 , a water leakage detection circuit 20 and a control module 30 .

[0050] The water leakage detection circuit 20 is disposed inside the electronic device 100 , and is used to output a water leakage signal when detecting water ingress into the electronic device 100 .

[0051] The control module 30 is electrically connected to the water leakage detection circuit 20 and the first power supply circuit 10. When the control module 30 is in the working state and does not receive the water leakage signal output by the water leakage detection circuit 20, it is used to continuously output the power supply lock signal PWR1 to the first power supply circuit 10 to control the first power supply circuit 10 to keep providing the working voltage VIN to the control module 30, so that the control module 30 receives the working voltage VIN and can maintain the working state. When the control module 30 is in the working state and receives the water leakage signal output by the water leakage detection circuit 20, it stops outputting the power supply lock signal PWR1 to the first power supply circuit 10, so that the first power supply circuit 10 stops providing the working voltage VIN to the control module 30, so that the control module 30 loses power.

[0052] It should be noted that the present application does not limit the number of the water leakage detection circuits 20, that is, one or more water leakage detection circuits 20 can be provided in the electronic device 100. The more water leakage detection circuits 20 there are, the more locations where water leakage can be detected, and the higher the accuracy of detection. When the control module 30 receives a water leakage signal output by any one or more of the water leakage detection circuits 20, it stops outputting the power supply lock signal PWR1 to the first power supply circuit 10.

[0053] The water leakage protection circuit 1 provided in the present application, by setting the water leakage detection circuit 20 inside the electronic device 100, and the water leakage detection circuit 20 outputs a water leakage signal to the control module 30 when detecting water entering the electronic device 100, so that the control module 30 stops outputting the power supply lock signal PWR1 to the first power supply circuit 10, so that the first power supply circuit 10 stops providing the working voltage VIN to the control module 30, thereby causing the control module 30 to lose power. In this way, after the electronic device 100 enters water, the power supply of the control module 30 can be automatically cut off, thereby preventing the control module 30 from being damaged by a short circuit failure, and the safety of the electronic device 100 can be improved.

[0054] Exemplarily, the control module 30 can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SOC), a central processing unit (CPU), an application processor (AP), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a baseband processor, and a neural-network processing unit (NPU), etc.

[0055] See also Figure 2 , Figure 2 1 is a second topological structure diagram of the water leakage protection circuit provided in an embodiment of the present application. In some embodiments, the water leakage protection circuit 1 further includes a power-on circuit 40, the power-on circuit 40 is electrically connected to the first power supply circuit 10, and the power-on circuit 40 outputs a power-on signal PWR2 to the first power supply circuit 10 in response to a power-on operation, so as to trigger the first power supply circuit 10 to provide the operating voltage VIN to the control module 30, so that the control module 30 enters a working state. After the power-on operation is completed, the power-on circuit 40 stops outputting the power-on signal PWR2 to the first power supply circuit 10. Exemplarily, the voltage value of the operating voltage VIN is 5V.

[0056] In one scenario, assuming that a water ingress failure occurs in the electronic device 100, after the control module 30 loses power and shuts down, the user is unaware of the water leakage failure and attempts to control the power-on circuit 40 to start the computer. In this embodiment, after the power-on operation is completed, the power-on circuit 40 stops outputting the power-on signal PWR2 to the first power supply circuit 10, and the control module 30 will lose power again. In this way, the control module 30 can be prevented from continuing to work after a water ingress failure occurs, thereby effectively protecting the control module 30.

[0057] In some embodiments, the water leakage protection circuit 1 further includes a storage module 50, and the storage module 50 is electrically connected to the control module 30. The control module 30 is also used to send an alarm instruction to the storage module 50 when it is in a working state and receives the water leakage signal, so as to store the alarm instruction in the storage module 50.

[0058] Exemplarily, the storage module 50 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0059] In this way, the alarm instruction is stored in the storage module 50, which is convenient for users to understand the water ingress situation of the electronic device 100 and find out the cause of the water ingress.

[0060] In some embodiments, the water leakage protection circuit 1 further includes a communication module 70 , and the control module 30 is further configured to send a water leakage alarm message to the mobile terminal through the communication module 70 when the alarm instruction is read.

[0061] In this way, it is convenient for the user to remotely understand the water ingress condition of the electronic device 100, so as to remind the user to deal with the water ingress defect in time, which is safer.

[0062] In some embodiments, the water leakage protection circuit 1 further includes an alarm module 80, and the control module 30 is further configured to control the alarm module 80 to send out an alarm signal when the alarm instruction is read.

[0063] Exemplarily, the alarm module 80 includes a buzzer, an LED light, and the like.

[0064] In this way, it is convenient for the user to understand the water ingress situation of the electronic device 100 in real time, so as to remind the user to deal with the water ingress defect in time, which is safer.

[0065] See also Figure 3 , Figure 3 yes Figure 2 The circuit structure diagram of the first power supply circuit in the water leakage protection circuit shown in FIG. Figure 3As shown, in some embodiments, the first power supply circuit 10 includes a first switch unit 11, and the first switch unit 11 is electrically connected to the power module 3, the control module 30 and the power-on circuit 40. When the first switch unit 11 receives the power lock signal PWR1 output by the control module 30 and / or the power-on signal PWR2 output by the power-on circuit 40, the first switch unit 11 conducts the electrical connection between the power module 3 and the control module 30, so that the power module 3 provides the operating voltage VIN to the control module 30.

[0066] Exemplarily, the power module 3 may include energy storage elements such as batteries and capacitors. The power module 3 may be arranged in the water leakage protection circuit 1 or outside the water leakage protection circuit 1, which is not limited here.

[0067] In some embodiments, the first switch unit 11 includes a first switch tube Q1 and a second switch tube Q2.

[0068] The first switch tube Q1 includes a control end, a first connection end and a second connection end. The first connection end of the first switch tube Q1 is electrically connected to the power module 3 , and the second connection end of the first switch tube Q1 is electrically connected to the control module 30 .

[0069] The second switch tube Q2 includes a control end, a first connection end and a second connection end. The first connection end of the second switch tube Q2 is grounded, the second connection end of the second switch tube Q2 is electrically connected to the control end of the first switch tube Q1, and the control end of the second switch tube Q2 is electrically connected to both the control module 30 and the power-on circuit 40.

[0070] When working, the second switch tube Q2 is turned on in response to the power lock signal PWR1 output by the control module 30 and / or the power-on signal PWR2 output by the power-on circuit 40, so that the control end of the first switch tube Q1 is grounded, thereby making the first switch tube Q1 turn on the electrical connection between the power module 3 and the control module 30.

[0071] In some embodiments, the first switch unit 11 further includes a first diode D1 and a second diode D2.

[0072] The anode of the first diode D1 is electrically connected to the control module 30 , and the cathode of the first diode D1 is electrically connected to the control end of the second switch tube Q2 . The first diode D1 is used to prevent the power-on signal PWR2 output by the power-on circuit 40 from being fed back to the control module 30 .

[0073] The anode of the second diode D2 is electrically connected to the startup circuit 40 , and the cathode of the second diode D2 is electrically connected to the control end of the second switch tube Q2 . The second diode D2 is used to prevent the power lock signal PWR1 output by the control module 30 from being fed back to the startup circuit 40 .

[0074] In some embodiments, the first switch unit 11 further includes a first resistor R1 to a seventh resistor R7, a voltage stabilizing diode D3, a first capacitor C1, a second capacitor C2 and a third capacitor C3.

[0075] Among them, the voltage stabilizing diode D3 and the first capacitor C1 are connected in parallel between the first connection end of the first switch tube Q1 and the ground, and the voltage stabilizing diode D3 and the first capacitor C1 stabilize the voltage output by the power module 3. The first resistor R1 and the second capacitor are connected in parallel between the first connection end of the first switch tube Q1 and the control end of the first switch tube Q1, and the second resistor R2 is electrically connected between the control end of the first switch tube Q1 and the second connection end of the second switch tube Q2. The third capacitor C3 and the fourth resistor R4 are connected in parallel between the control end of the second switch tube Q2 and the ground, and the fifth resistor R5 is electrically connected between the cathode of the first diode D1, the cathode of the second diode D2 and the control end of the second switch tube Q2. The fifth resistor R5 and the third capacitor C3 form a low-pass filter circuit for filtering out the high-order harmonics in the power lock signal PWR1 and the power-on signal PWR2. The sixth resistor R6 is electrically connected between the control module 30 and the anode of the first diode D1, and the seventh resistor R7 is electrically connected between the power-on circuit 40 and the anode of the second diode D2.

[0076] In this embodiment, the first switch tube Q1 is a P-type MOS tube, the second switch tube Q2 is an N-type MOS tube, and the power lock signal PWR1 and the power-on signal PWR2 are both high-level voltage signals.

[0077] When the power-on circuit 40 outputs the power-on signal PWR2, the second diode D2 is turned on, thereby outputting the power-on signal PWR2 to the control end of the second switch tube Q2, so that the control end of the second switch tube Q2 is at a high level voltage, so that the second switch tube Q2 conducts the electrical connection between the control end of the first switch tube Q1 and the ground, so that the first switch tube Q1 conducts the electrical connection between the power module 3 and the control module 30, that is, the power module 3 outputs the working voltage VIN to the control module 30. In this way, the control module 30 is powered on and enters the working state.

[0078] After entering the working state, the control module 30 continuously outputs the power supply locking signal PWR1, so that the first diode D1 is continuously turned on, and the power supply locking signal PWR1 is output to the control end of the second switch tube Q2, so that the control end of the second switch tube Q2 is continuously at a high level voltage, so that the second switch tube Q2 continuously turns on the electrical connection between the control end of the first switch tube Q1 and the ground, and the first switch tube Q1 continuously turns on the electrical connection between the power module 3 and the control module 30, so that the power module 3 continuously outputs the working voltage VIN to the control module 30.

[0079] When the control module 30 receives the water leakage signal output by the water leakage detection circuit 20, it stops outputting the power supply lock signal PWR1, so that the first diode D1 is turned off, and the fourth resistor R4 pulls down the control end of the second switch tube Q2 to a low potential, so that the second switch tube Q2 is turned off. The first resistor R1 pulls up the control end of the first switch tube Q1 to a high level voltage, so that the first switch tube Q1 disconnects the electrical connection between the power module 3 and the control module 30, that is, the power module 3 stops outputting the working voltage VIN to the control module 30. In this way, the control module 30 loses power.

[0080] In some embodiments, the water leakage protection circuit 1 also includes a power chip (not shown in the figure), which is electrically connected between the first power supply circuit 10 and the control module 30. The power chip is used to step down and stabilize the working voltage VIN output by the first power supply circuit 10 before outputting it to the control module 30.

[0081] See also Figure 4 , Figure 4 yes Figure 2 The circuit structure diagram of the water leakage detection circuit in the water leakage protection circuit shown in FIG. Figure 4 As shown, the water leakage detection circuit 20 includes a signal output terminal 22 , a first conductive member S1 , a second conductive member S2 and a second switch unit 21 .

[0082] The signal output terminal 22 is electrically connected to the control module 30 .

[0083] The second conductive member S2 is grounded and spaced apart from the first conductive member S1. The first conductive member S1 and the second conductive member S2 are made of conductive material.

[0084] The second switch unit 21 is electrically connected to both the first conductive member S1 and the signal output terminal 22 . When the first conductive member S1 and the second conductive member S2 are short-circuited, the second switch unit 21 enables the signal output terminal 22 to output the water leakage signal to the control module 30 .

[0085] In some embodiments, the second switch unit 21 includes a detection voltage terminal 211 , a third switch tube Q3 , and a fourth switch tube Q4 .

[0086] The detection voltage terminal 211 is used to receive the detection voltage V3.

[0087] The third switch tube Q3 includes a control end, a first connection end and a second connection end. The first connection end of the third switch tube Q3 is electrically connected to the detection voltage end 211 , and the second connection end of the third switch tube Q3 is electrically connected to the signal output end 22 .

[0088] The fourth switch tube Q4 includes a control end, a first connection end and a second connection end. The first connection end of the fourth switch tube Q4 is electrically connected to the control end of the third switch tube Q3, the second connection end of the fourth switch tube Q4 is electrically connected to the second connection end of the third switch tube Q3, and the control end of the fourth switch tube Q4 is electrically connected to the first conductive member S1.

[0089] When the first conductive element S1 is short-circuited with the second conductive element S2, the fourth switch tube Q4 is triggered to turn on the electrical connection between the control end of the third switch tube Q3 and the second connection end of the third switch tube Q3, thereby triggering the third switch tube Q3 to turn on the electrical connection between the detection voltage end 211 and the signal output end 22, thereby causing the signal output end 22 to output the water leakage signal.

[0090] In some embodiments, the second switch unit 21 further includes an eighth resistor R8 to a thirteenth resistor R13 and a fourth capacitor C4. The eighth resistor R8 is electrically connected between the detection voltage terminal 211 and the control terminal of the fourth switch tube Q4, the fourth capacitor C4 is electrically connected between the control terminal of the fourth switch tube Q4 and ground, the twelfth resistor R12 is electrically connected between the control terminal of the fourth switch tube Q4 and the first conductive member S1, the thirteenth resistor R13 is electrically connected between the second conductive member S2 and ground, the ninth resistor R9 is electrically connected between the control terminal of the third switch tube Q3 and the detection voltage terminal 211, the tenth resistor R10 is electrically connected between the second connection terminal of the third switch tube Q3 and the signal output terminal 22, and the eleventh resistor R11 is electrically connected between the signal output terminal 22 and ground.

[0091] In this embodiment, the third switch tube Q3 and the fourth switch tube Q4 are both P-type MOS tubes, and the water leakage signal is a high-level voltage signal.

[0092] During operation, when the first conductive member S1 and the second conductive member S2 are not short-circuited, the eighth resistor R8 pulls up the control end of the fourth switch tube Q4 to a high level voltage, so that the fourth switch tube Q4 disconnects the electrical connection between the control end of the third switch tube Q3 and the second connection end of the third switch tube Q3; the ninth resistor R9 pulls up the control end of the third switch tube Q3 to a high level voltage, so that the third switch tube Q3 disconnects the electrical connection between the detection voltage end 211 and the signal output end 22; the eleventh resistor R11 pulls down the signal output end 22 to the ground potential, that is, the output end 22 does not output the water leakage signal.

[0093] When water enters the electronic device 100 and causes the first conductive member S1 and the second conductive member S2 to be short-circuited, the control end of the fourth switch tube Q4 is grounded through the twelfth resistor R12, the first conductive member S1, the second conductive member S2 and the thirteenth resistor R13, so that the fourth switch tube Q4 conducts the electrical connection between the control end of the third switch tube Q3 and the second connection end of the third switch tube Q3, so that the third switch tube Q3 conducts the electrical connection between the detection voltage end 211 and the signal output end 22, and then the output end 22 outputs the water leakage signal.

[0094] See also Figure 5 , Figure 5 yes Figure 2 The circuit structure diagram of the power-on circuit in the water leakage protection circuit is shown in FIG. Figure 5 As shown, the power-on circuit 40 includes a key component K1, a first end of the key component K1 is used to receive a key voltage V4, a second end of the key component K1 is electrically connected to the first power supply circuit 10, and the key component K1 is turned on and outputs the power-on signal PWR2 to the first power supply circuit 10 when pressed, and stops outputting the power-on signal PWR2 after the pressing ends. The power-on operation received by the power-on circuit 40 is the pressing operation received by the key component K1. Exemplarily, the voltage value of the key voltage V4 is 3.3V.

[0095] Specifically, the key assembly K1 includes a first contact K11, a second contact K12 and a key body K13, the first contact K11 receives the key voltage V4 through a fourteenth resistor R14, the second contact K12 is spaced apart from the first contact K11 and electrically connected to the first power supply circuit 10, and the second contact K12 is also grounded through a fifth capacitor C5. When the key body K13 is not pressed, the first contact K11 and the second contact K12 are spaced apart, so that the second contact K12 does not output the power-on signal PWR2 to the first power supply circuit 10. When the key body K13 is pressed, the first contact K11 and the second contact K12 are connected, so that the second contact K12 receives the key voltage V4 through the key body K13, the first contact K11 and the fourteenth resistor R14 and outputs the power-on signal PWR2 to the first power supply circuit 10.

[0096] See also Figure 6 , Figure 6 yes Figure 2 The circuit structure diagram of the second power supply circuit in the water leakage protection circuit shown. In some embodiments, the water leakage protection circuit 1 also includes a second power supply circuit 60, the second power supply circuit 60 is electrically connected to the power module 3 and the key assembly K1, and the second power supply circuit 60 is used to convert the power supply voltage provided by the power module 3 into the key voltage and output it to the key assembly K1.

[0097] In some embodiments, the second power supply circuit 60 includes a fifth switch tube Q5 and a voltage conversion unit U1.

[0098] The fifth switch tube Q5 includes a first connection end and a second connection end. The first connection end of the fifth switch tube Q5 is electrically connected to the power module 3 .

[0099] The voltage conversion unit U1 is electrically connected between the second connection end of the fifth switch tube Q5 and the key assembly K1.

[0100] When the fifth switch tube Q5 receives the power supply voltage provided by the power supply module 3, it turns on the electrical connection between the power supply module 3 and the voltage conversion unit U1, so that the voltage conversion unit U1 receives the power supply voltage provided by the power supply module 3 through the turned-on fifth switch tube Q5, and converts the power supply voltage into the key voltage V4 and outputs it to the key component K1.

[0101] In this embodiment, the fifth switch tube Q5 is an N-type MOS tube. The second power supply circuit 60 also includes a fifteenth resistor R15 to an eighteenth resistor R18, a sixth capacitor C6 and a seventh capacitor C7. The fifteenth resistor R15 is electrically connected between the power module 3 and the first connection end of the fifth switch tube Q5, the sixteenth resistor R16 and the sixth capacitor C6 are connected in parallel between the first connection end of the fifth switch tube Q5 and the control end of the fifth switch tube Q5, the seventeenth resistor R17 is electrically connected between the control end of the fifth switch tube Q5 and the ground, the eighteenth resistor R18 is electrically connected between the second connection end of the fifth switch tube Q5 and the input end of the voltage conversion unit U1, and the seventh capacitor C7 is electrically connected between the input end of the voltage conversion unit U1 and the ground.

[0102] See also Figure 7 , Figure 7 Based on the same inventive concept, the present application also provides an electronic device 100, the electronic device 100 comprising a housing 2 and a water leakage protection circuit 1 as described in any of the above embodiments, the water leakage detection circuit 20 of the water leakage protection circuit 1 being arranged inside the housing 2.

[0103] Exemplarily, the electronic device 100 may be a swimming pool cleaning robot, a mobile phone, an electronic watch, etc.

[0104] Based on the same inventive concept, the present application also provides a robot, which includes the water leakage protection circuit 1 described in any of the above embodiments.

[0105] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A water leakage protection circuit, applied to electronic equipment, characterized in that: The water leakage protection circuit comprises: a first power supply circuit; a water leakage detection circuit, disposed inside the electronic device, for outputting a water leakage signal when detecting water ingress into the electronic device; and The control module is electrically connected to the water leakage detection circuit and the first power supply circuit. When the control module is in a working state and has not received a water leakage signal output by the water leakage detection circuit, the control module is used to continuously output a power supply locking signal to the first power supply circuit to control the first power supply circuit to keep providing the working voltage to the control module, so that the control module receives the working voltage and can maintain the working state; when the control module is in a working state and receives a water leakage signal output by the water leakage detection circuit, the control module stops outputting the power supply locking signal to the first power supply circuit, so that the first power supply circuit stops providing the working voltage to the control module, thereby causing the control module to lose power.

2. The water leakage protection circuit according to claim 1, characterized in that: The water leakage protection circuit also includes a power-on circuit, which is electrically connected to the first power supply circuit. In response to a power-on operation, the power-on circuit outputs a power-on signal to the first power supply circuit to trigger the first power supply circuit to provide a working voltage to the control module, thereby putting the control module into a working state; after the power-on operation is completed, the power-on circuit stops outputting the power-on signal to the first power supply circuit.

3. The water leakage protection circuit according to claim 2, characterized in that: The water leakage protection circuit also includes a storage module, which is electrically connected to the control module; the control module is also used to send an alarm instruction to the storage module when it is in a working state and receives the water leakage signal, so as to store the alarm instruction in the storage module.

4. The water leakage protection circuit according to claim 3, characterized in that: The water leakage protection circuit further comprises a communication module, and the control module is further configured to send water leakage alarm information to the mobile terminal through the communication module when the alarm instruction is read; and / or The water leakage protection circuit also includes an alarm module, and the control module is further used to control the alarm module to send out an alarm signal when the alarm instruction is read.

5. The water leakage protection circuit according to claim 2, characterized in that: The first power supply circuit includes a first switch unit, which is electrically connected to the power supply module, the control module and the power-on circuit. When the first switch unit receives the power supply lock signal output by the control module and / or the power-on signal output by the power-on circuit, the first switch unit conducts the electrical connection between the power supply module and the control module, so that the power supply module provides the working voltage to the control module.

6. The water leakage protection circuit according to claim 5, characterized in that: The first switch unit comprises: A first switch tube, comprising a control end, a first connection end and a second connection end; the first connection end of the first switch tube is electrically connected to the power module, and the second connection end of the first switch tube is electrically connected to the control module; and A second switch tube, comprising a control end, a first connection end and a second connection end; the first connection end of the second switch tube is grounded, the second connection end of the second switch tube is electrically connected to the control end of the first switch tube, and the control end of the second switch tube is electrically connected to the control module and the power-on circuit; The second switch tube is turned on in response to the power lock signal output by the control module and / or the power-on signal output by the power-on circuit, so that the control end of the first switch tube is grounded, thereby enabling the first switch tube to conduct the electrical connection between the power module and the control module.

7. The water leakage protection circuit according to claim 1, characterized in that: The water leakage detection circuit comprises: A signal output terminal, electrically connected to the control module; a first conductive member; a second conductive member, grounded and spaced apart from the first conductive member; and The second switch unit is electrically connected to both the first conductive member and the signal output end. When the first conductive member and the second conductive member are short-circuited, the second switch unit enables the signal output end to output the water leakage signal to the control module.

8. The water leakage protection circuit according to claim 7, characterized in that: The second switch unit comprises: A detection voltage terminal, used for receiving a detection voltage; A third switch tube, comprising a control end, a first connection end and a second connection end, wherein the first connection end of the third switch tube is electrically connected to the detection voltage end, and the second connection end of the third switch tube is electrically connected to the signal output end; and a fourth switch tube, comprising a control end, a first connection end and a second connection end, wherein the first connection end of the fourth switch tube is electrically connected to the control end of the third switch tube, the second connection end of the fourth switch tube is electrically connected to the second connection end of the third switch tube, and the control end of the fourth switch tube is electrically connected to the first conductive member; When the first conductive member is short-circuited with the second conductive member, the fourth switch tube is triggered to conduct the electrical connection between the control end of the third switch tube and the second connection end of the third switch tube, thereby triggering the third switch tube to conduct the electrical connection between the detection voltage end and the signal output end, thereby causing the signal output end to output the water leakage signal.

9. The water leakage protection circuit according to claim 2, characterized in that: The power-on circuit includes a button assembly, a first end of the button assembly is used to receive a button voltage, a second end of the button assembly is electrically connected to the first power supply circuit, the button assembly is turned on and outputs the power-on signal to the first power supply circuit when pressed, and stops outputting the power-on signal after the pressing ends; wherein the power-on operation received by the power-on circuit is a pressing operation received by the button assembly.

10. The water leakage protection circuit according to claim 9, characterized in that: The water leakage protection circuit also includes a second power supply circuit, which is electrically connected to the power module and the button assembly, and is used to convert the power supply voltage provided by the power module into the button voltage and output it to the button assembly.

11. The water leakage protection circuit according to claim 10, characterized in that: The second power supply circuit comprises: a fifth switch tube, comprising a first connection end and a second connection end; the first connection end of the fifth switch tube is electrically connected to the power module; and A voltage conversion unit, electrically connected between the second connection end of the fifth switch tube and the key assembly; When the fifth switch tube receives the power supply voltage provided by the power supply module, it turns on the electrical connection between the power supply module and the voltage conversion unit, so that the voltage conversion unit receives the power supply voltage provided by the power supply module through the turned-on fifth switch tube, and converts the power supply voltage into the key voltage and outputs it to the key component.

12. An electronic device, characterized in that: The electronic device comprises: a housing; and The water leakage protection circuit according to any one of claims 1 to 11, wherein the water leakage detection circuit of the water leakage protection circuit is arranged inside the housing.

13. A robot, characterized in that: The robot comprises the water leakage protection circuit as claimed in any one of claims 1 to 11.

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