Dual power supply circuit for smart toilet and smart toilet

Abstract

This utility model discloses a dual power supply circuit for a smart toilet and a smart toilet in the field of bathroom fixtures technology. The dual power supply circuit includes a first power output terminal, a battery, a first power input terminal, and a switching circuit. When the power voltage at the first power input terminal is greater than or equal to a preset voltage, the toilet is powered by the power from the first power input terminal. The switching circuit disconnects the electrical connection between the battery and the first power output terminal, so no current flows to the battery, and the power from the first power output terminal cannot charge the battery, thus preventing the risk of battery bulging or damage. When the power voltage at the first power input terminal is lower than the preset voltage, the switching circuit closes the electrical connection between the battery and the first power output terminal. In this case, the toilet is powered by the battery, enabling normal flushing even in the event of a power outage. This utility model avoids the problems of battery bulging or damage.

Description

Technical Field

[0001] This utility model relates to the field of bathroom fixtures technology, and in particular to a dual power supply circuit for a smart toilet and a smart toilet. Background Technology

[0002] With the development of technology, smart toilets are becoming increasingly feature-rich, including automatic washing, drying, seat heating, and intelligent sensing. These functions all rely on a stable power supply. However, the household electrical environment is complex and unpredictable, and relying on a single power source can lead to power outages or malfunctions, impacting user experience. Therefore, using batteries as a backup power source allows for seamless switching when the main power source fails, ensuring continuous operation of core functions and improving safety and user satisfaction.

[0003] Currently, most dual-power supply solutions on the market use diodes for isolation, enabling automatic switching between PBX and battery power. When a 12V power supply is connected, the diode prevents the PBX from reverse charging the battery; when the power supply is disconnected, the battery powers the system through the diode. However, this design has a drawback: the diode still experiences leakage current even in reverse blocking mode, especially noticeable at high temperatures. When the 12V power supply operates for extended periods, this leakage current continuously flows through the diode to the battery, causing the battery to be weakly but persistently reverse-charged. This unintended charging can subject the battery to stress exceeding its voltage, potentially leading to bulging, damage, and even safety risks, impacting product lifespan and stability. Utility Model Content

[0004] The main purpose of this utility model is to provide a dual power supply circuit for a smart toilet, which aims to solve the problem of bulging and damage caused by abnormal charging of the battery due to diode leakage current in the existing dual power supply scheme of smart toilets.

[0005] To achieve the above objectives, the present invention proposes a dual power supply circuit for an intelligent toilet, comprising:

[0006] First power output terminal;

[0007] Battery;

[0008] The first power input terminal is connected to the first power output terminal;

[0009] A switching circuit, wherein the controlled terminal of the switching circuit is connected to the first power input terminal, the first connection terminal of the switching circuit is connected to the battery, and the second connection terminal of the switching circuit is connected to the first power output terminal;

[0010] The switching circuit is used to disconnect the electrical connection between the battery and the first power output terminal when the power supply voltage at the first power input terminal is greater than or equal to a preset voltage; and to close the electrical connection between the battery and the first power output terminal when the power supply voltage output at the first power input terminal is lower than the preset voltage.

[0011] In one embodiment, the switching circuit includes a relay having a moving contact, a stationary contact, and a trigger coil;

[0012] The moving contact is connected to the first power output terminal, the stationary contact is connected to the battery, one end of the trigger coil is connected to the first power input terminal, and the other end of the trigger coil is grounded.

[0013] When the voltage at the first power input terminal is greater than or equal to a preset voltage, the moving contact is disconnected from the stationary contact; when the power output voltage at the first power input terminal is lower than the preset voltage, the moving contact is closed to the stationary contact.

[0014] In one embodiment, the dual power supply circuit for the smart toilet further includes:

[0015] Second power output terminal;

[0016] A voltage conversion circuit is provided, wherein the input terminal of the voltage conversion circuit is connected to the first power output terminal, and the output terminal of the voltage conversion circuit is connected to the second power output terminal. The voltage conversion circuit is used to convert the voltage output from the first power output terminal and output it to the second power output terminal.

[0017] In one embodiment, the voltage conversion circuit includes a step-down chip, a first capacitor, and a second capacitor; the input terminal of the step-down chip and one end of the first capacitor are connected to the first power output terminal, the output terminal of the step-down chip and one end of the second capacitor are connected to the second power output terminal, and the ground terminal of the step-down chip, the other end of the first capacitor, and the other end of the second capacitor are grounded.

[0018] This utility model also proposes a smart toilet, including a toilet body and a dual power supply circuit for the smart toilet as described above, which is provided on the toilet body.

[0019] In one embodiment, the smart toilet further includes:

[0020] Flushing solenoid valve;

[0021] A drive circuit, wherein the power supply terminal of the drive circuit is connected to the first power output terminal, and the drive output terminal of the drive circuit is connected to the flushing solenoid valve, and the drive circuit is used to drive the flushing solenoid valve to open / close.

[0022] A trigger circuit, wherein the power supply terminal of the trigger circuit is connected to the first power output terminal, and the trigger circuit is used to output a first trigger level signal when triggered by the user;

[0023] The main control circuit has its signal input terminal connected to the trigger circuit, its power supply terminal connected to the first power output terminal, and its signal output terminal connected to the controlled terminal of the drive circuit.

[0024] The main control circuit is used to control the operation of the drive circuit according to the first trigger level signal.

[0025] In one embodiment, the number of flushing solenoid valves is N, and the number of corresponding drive circuits is also N;

[0026] The power input terminals of the N driving circuits are respectively connected to the first power output terminal, the controlled terminals of the N driving circuits are connected one-to-one with the N signal output terminals of the main control circuit, and the driving output terminal of the Nth driving circuit is connected to the Nth flushing solenoid valve.

[0027] The main control circuit is used to control the operation of N driving circuits respectively according to the first trigger level signal; where N is a positive integer greater than 1.

[0028] In one embodiment, the driving circuit includes a first resistor, a second resistor, a first switching transistor, and a first diode;

[0029] One end of the first resistor is connected to the signal output terminal of the main control circuit, the other end of the first resistor and the controlled terminal of the first switching transistor are connected to one end of the second resistor, the first terminal of the first switching transistor and the positive terminal of the first diode are connected to the first power supply terminal of the flushing solenoid valve, and the second power supply terminal of the flushing solenoid valve is connected to the power supply terminal of the drive circuit.

[0030] In one embodiment, the trigger circuit includes a third resistor, a fourth resistor, a third capacitor, and a flush button;

[0031] One end of the flush button is grounded, and the other end of the flush button is connected to one end of the third resistor. The other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are connected to the signal input terminal of the main control circuit. The other end of the fourth resistor is connected to the power supply terminal of the trigger circuit, and the other end of the third capacitor is grounded.

[0032] In one embodiment, the main control circuit includes an MCU chip and a fourth capacitor;

[0033] The signal input pin of the MCU chip is connected to the trigger circuit. The power supply pin of the MCU and the first power output terminal are connected to one end of the fourth capacitor. The ground pin of the MCU is grounded to the other end of the fourth capacitor. The signal output pin of the MCU is connected to the controlled terminal of the drive circuit.

[0034] This utility model employs a dual-power supply circuit for an intelligent toilet, including a first power output terminal, a battery, a first power input terminal, and a switching circuit. When the power voltage at the first power input terminal is greater than or equal to a preset voltage, the toilet is powered by the power from the first power input terminal. The switching circuit disconnects the electrical connection between the battery and the first power output terminal, preventing current flow to the battery and thus eliminating the risk of battery bulging or damage. When the power voltage at the first power input terminal is lower than the preset voltage, the switching circuit closes the electrical connection between the battery and the first power output terminal, allowing the toilet to be powered by the battery and enabling normal flushing even in the event of a power outage. Compared to existing technologies, this utility model avoids the problems of battery bulging or damage. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 A schematic diagram of an embodiment of the dual power supply circuit for a smart toilet provided by this utility model;

[0037] Figure 2 An electronic circuit diagram of yet another embodiment of the dual power supply circuit for the smart toilet provided by this utility model;

[0038] Figure 3 Electronic circuit diagram of an embodiment of the smart toilet provided by this utility model;

[0039] Figure 4 An electronic circuit diagram of a dual power supply circuit for an exemplary toilet provided by this utility model.

[0040] Explanation of icon numbers:

[0041] 01 Battery 02 First power input terminal 03 Switching circuit 04 First power output terminal C1 First capacitor C2 Second capacitor U1 step-down chip RELAY relay

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0046] Power outages occasionally occur in daily life. To ensure that a smart toilet can still flush during a power outage, the circuit design needs to incorporate a battery-powered system, providing both a power source and a battery. Currently, most dual-power supply solutions on the market use diodes for isolation, enabling automatic switching between power and battery power. When a 12V power source is connected, the diode prevents reverse charging of the battery; when the power source is disconnected, the battery powers the system through the diode. Please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is an electronic circuit diagram of an exemplary dual-power supply circuit for a toilet, where the CN1 interface connects to the battery and the CN2 interface connects to an external 12V power input. When powered by the power supply, the power supply voltage is higher than the battery voltage, the diode is cut off, and the 12V power supply powers the toilet for flushing; the circuit does not consume battery power. When the power supply is off, the power supply voltage is lower than a preset voltage (e.g., 0V), and the battery voltage is higher than the current power supply voltage, the diode conducts, and battery power is supplied, powering the toilet for flushing. In this exemplary embodiment, diode isolation is used to achieve automatic switching between power supply and battery power.

[0047] However, this design has a flaw: although the diode is cut off when the power supply is available, it cannot be completely shut off because it is a semiconductor device. Leakage current will flow through the diode to the battery, and according to the characteristics of the diode, the leakage current increases with higher temperatures. Because the power supply voltage is higher than the battery voltage, the battery will be in an excessively high-voltage charging state for a long time, which can easily lead to battery bulging, damage, or even explosion, affecting the toilet's lifespan and stability.

[0048] This utility model proposes a dual power supply circuit for an intelligent toilet.

[0049] Please see Figure 1 In one embodiment of this utility model, the dual power supply circuit of the smart toilet includes:

[0050] First power output terminal 04;

[0051] Battery 01;

[0052] First power input terminal 02, which is connected to first power output terminal 04;

[0053] Switching circuit 03, the controlled terminal of switching circuit 03 is connected to the first power input terminal 02, the first connection terminal of switching circuit 03 is connected to the battery 01, and the second connection terminal of switching circuit 03 is connected to the first power output terminal 04.

[0054] The switching circuit 03 is used to disconnect the electrical connection between the battery 01 and the first power output terminal 04 when the power supply voltage at the first power input terminal 02 is greater than or equal to a preset voltage; and to close the electrical connection between the battery 01 and the first power output terminal 04 when the power supply voltage output at the first power input terminal 02 is lower than the preset voltage.

[0055] In this embodiment, when the power supply voltage at the first power input terminal 02 is greater than or equal to a preset voltage, the toilet is powered by the power from the first power input terminal 02. The switching circuit 03 disconnects the electrical connection between the battery 01 and the first power output terminal 04. At this time, no current flows to the battery 01, and the power input at the first power input terminal 02 cannot charge the battery 01, thus preventing the risk of battery bulging or damage. When the power supply voltage at the first power input terminal 02 is lower than the preset voltage, the switching circuit 03 closes the electrical connection between the battery 01 and the first power output terminal 04. At this time, the toilet is powered by the battery 01, enabling normal flushing even in a power outage. Therefore, compared with the prior art, this embodiment does not cause battery bulging or damage.

[0056] It should be noted that the switching circuit 03 may include electronic switches such as relays, metal-oxide-semiconductor field-effect transistors or bipolar transistors, or integrated switching chips that can realize the voltage magnitude controlled by the first power input terminal 02, etc., without limitation.

[0057] Please see Figure 2 In one embodiment of this utility model, the switching circuit 03 includes a relay RELAY, which has a moving contact, a stationary contact, and a trigger coil.

[0058] The moving contact is connected to the first power output terminal 04, the stationary contact is connected to the battery 01, one end of the trigger coil is connected to the first power input terminal 02, and the other end of the trigger coil is grounded.

[0059] When the voltage at the first power input terminal 02 is greater than or equal to the preset voltage, the moving contact disconnects from the stationary contact; when the power voltage output from the first power input terminal 02 is lower than the preset voltage, the moving contact closes from the stationary contact.

[0060] In this embodiment, taking the relay RELAY as a single-pole double-throw relay as an example, when the voltage at the first power input terminal 02 is lower than the preset voltage, the relay RELAY pins 1-2 are not energized, and the relay RELAY pins 3-4 are normally closed. That is, at this time, the relay RELAY contact 3 and the relay RELAY contact 4 are closed and connected, the relay RELAY pin 3-5 is normally open, and the battery 01 outputs power to the first power output terminal 04.

[0061] When the voltage at the first power input terminal 02 is greater than or equal to the preset voltage, the relay RELAY is energized at pins 1-2 and normally open at pins 3-4. That is, at this time, contacts 3 and 4 of the relay RELAY are disconnected. Because pins 3-4 of the relay RELAY are normally open, the battery 01 and the first power output terminal 04 are completely physically disconnected. The power from the first power output terminal 04 will not charge the battery 01 in reverse, thus avoiding the risk of the battery 01 bulging, being damaged, or even exploding due to high voltage.

[0062] Please see Figure 2 In one embodiment of this utility model, the dual power supply circuit for the smart toilet further includes:

[0063] Second power output terminal;

[0064] The voltage conversion circuit has its input terminal connected to the first power output terminal 04 and its output terminal connected to the second power output terminal. The voltage conversion circuit is used to convert the voltage output from the first power output terminal 04 and output it to the second power output terminal.

[0065] In one embodiment, the voltage conversion circuit includes a step-down chip U1, a first capacitor C1, and a second capacitor C2; the input terminal of the step-down chip U1 and one end of the first capacitor C1 are connected to the first power output terminal O4, the output terminal of the step-down chip U1 and one end of the second capacitor C2 are connected to the second power output terminal, and the ground terminal of the step-down chip U1 and the other end of the first capacitor C1 and the other end of the second capacitor C2 are grounded.

[0066] In this embodiment, the dual power supply circuit for the smart toilet can convert the 12V voltage output from the first power output terminal to a 5V voltage output by setting a step-down chip U1, a first capacitor C1, and a second capacitor C2. The second power output terminal then outputs a 5V power supply, which can power the main control chip and other circuits of the smart toilet, meeting the power supply requirements of different voltages. The first capacitor C1 and the second capacitor C2 can be used to filter power ripple and regulate voltage.

[0067] This utility model also proposes a smart toilet, which includes a toilet body and a dual power supply circuit for the smart toilet disposed on the toilet body. The specific structure of the dual power supply circuit for the smart toilet is as described in the above embodiments. Since this smart toilet adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0068] Please see Figure 3 In one embodiment of this utility model, the smart toilet further includes:

[0069] Flushing solenoid valve;

[0070] The drive circuit has its power supply terminal connected to the first power output terminal 04 and its drive output terminal connected to the flushing solenoid valve. The drive circuit is used to drive the flushing solenoid valve to open / close.

[0071] The trigger circuit has its power supply terminal connected to the first power output terminal 04. The trigger circuit is used to output a first trigger level signal when triggered by the user.

[0072] The main control circuit has its signal input terminal connected to the trigger circuit, its power supply terminal connected to the first power output terminal 04, and its signal output terminal connected to the controlled terminal of the drive circuit.

[0073] The main control circuit is used to control the operation of the drive circuit according to the first trigger level signal.

[0074] In this embodiment, when the trigger circuit is triggered by the user, it outputs a first trigger level signal to the main control circuit. The main control circuit, based on the first trigger level signal, outputs a control signal to the controlled terminal of the drive circuit. This control signal can be a high-level signal or a low-level signal. The drive circuit can correspondingly drive the flushing solenoid valve to open for flushing; or, correspondingly drive the flushing solenoid valve to close for stopping flushing. It is understood that the main control circuit can continuously output a control signal for a preset time to control the flushing solenoid valve to open for the preset time, continuously flushing for that time; after the preset time, it controls the flushing solenoid valve to close, stopping flushing.

[0075] Please see Figure 3 In one embodiment of the present invention, the driving circuit includes a first resistor R4, a second resistor R5, a first switching transistor Q1, and a first diode D2.

[0076] One end of the first resistor R4 is connected to the signal output terminal of the main control circuit. The other end of the first resistor R4 and the controlled terminal of the first switching transistor Q1 are connected to one end of the second resistor R5. The first terminal of the first switching transistor Q1 and the positive terminal of the first diode D2 are connected to the first power supply terminal of the flushing solenoid valve. The second power supply terminal of the flushing solenoid valve is connected to the power supply terminal of the drive circuit.

[0077] In this embodiment, the first switching transistor Q1 can be an NMOS transistor. When the main control circuit outputs a high level, the NMOS transistor is turned on, and current flows through the flush solenoid valve, putting it in the open state. The flush solenoid valve then controls the toilet to flush. When the main control circuit outputs a low level, the NMOS transistor is turned off, and no current flows through the flush solenoid valve, putting it in the closed state. The flush solenoid valve then stops flushing. The use of a first resistor R4 and a second resistor R5 helps stabilize the operating state of the NMOS transistor, and the use of a first diode D2 helps absorb the reverse electromotive force, protecting the switching safety of the NMOS transistor. This allows for the flushing drive of the flush solenoid valve.

[0078] Please see Figure 3 In one embodiment of this utility model, the trigger circuit includes a third resistor R3, a fourth resistor R2, a third capacitor C6, and a flush button KEY.

[0079] One end of the flush button KEY is grounded, and the other end of the flush button KEY is connected to one end of the third resistor R3. The other end of the third resistor R3, one end of the fourth resistor R2, and one end of the third capacitor C6 are connected to the signal input terminal of the main control circuit. The other end of the fourth resistor R2 is connected to the power supply terminal of the trigger circuit, and the other end of the third capacitor C6 is grounded.

[0080] In this embodiment, when the user presses the flush button KEY, the signal input terminal of the main control circuit is grounded, receiving a low level, and the main control circuit controls the flushing. When the user releases the flush button KEY, the signal input terminal of the main control circuit is connected to the power supply terminal of the trigger circuit, receiving a high level, and the flushing control stops. This allows for trigger control of the toilet flushing.

[0081] Please see Figure 3 In one embodiment of this utility model, the main control circuit includes an MCU chip and a fourth capacitor;

[0082] The signal input pin of the MCU chip is connected to the trigger circuit. The power supply pin of the MCU, the first power output terminal 04, and one end of the fourth capacitor are connected. The ground pin of the MCU is grounded to the other end of the fourth capacitor. The signal output pin of the MCU is connected to the controlled end of the drive circuit.

[0083] In this embodiment, the MCU chip can be an MM32F0141C4N chip, which has the advantages of high efficiency and low cost. The fourth capacitor can be set as a parallel connection of capacitors C3 and C4, which helps to stabilize the power input. In this embodiment, a resistor R1 and a capacitor C5 may also be included to input another voltage divider power supply to the MCU chip, ensuring the normal operation of the MCU chip.

[0084] Please see Figure 3 In one embodiment of this utility model, the number of flushing solenoid valves is N, and the number of corresponding drive circuits is also N;

[0085] The power input terminals of N drive circuits are respectively connected to the first power output terminal 04. The controlled terminals of N drive circuits are connected one-to-one with the N signal output terminals of the main control circuit. The drive output terminal of the Nth drive circuit is connected to the Nth flushing solenoid valve.

[0086] The main control circuit is used to control the operation of N drive circuits respectively according to the first trigger level signal; where N is a positive integer greater than 1.

[0087] In this embodiment, N can be 2. The first flushing solenoid valve controls a smaller flush volume, and its first drive circuit includes resistors R4 and R5, a switching transistor Q1, and a diode D2, connected to the first flushing solenoid valve via a CN3 interface. The second flushing solenoid valve controls a larger flush volume, and its second drive circuit includes resistors R6 and R7, a switching transistor Q2, and a diode D3, connected to the second flushing solenoid valve via a CN4 interface.

[0088] In this embodiment, if the trigger circuit, when triggered by the user, outputs a first trigger level signal indicating a smaller flush volume to the main control circuit (e.g., a short press of the flush button KEY), the main control circuit outputs a control signal based on this first trigger level signal to drive the first drive circuit, thereby controlling the opening of the first flush solenoid valve. Conversely, if the trigger circuit, when triggered by the user, outputs a first trigger level signal indicating a larger flush volume to the main control circuit (e.g., a longer press of the flush button KEY), the main control circuit outputs a control signal based on this first trigger level signal to drive the second drive circuit, thereby controlling the opening of the second flush solenoid valve. Thus, this embodiment can control different flush volumes, which helps save water.

[0089] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A dual power supply circuit for a smart toilet, characterized in that, include: First power output terminal; Battery; The first power input terminal is connected to the first power output terminal; A switching circuit, wherein the controlled terminal of the switching circuit is connected to the first power input terminal, the first connection terminal of the switching circuit is connected to the battery, and the second connection terminal of the switching circuit is connected to the first power output terminal; The switching circuit is used to disconnect the electrical connection between the battery and the first power output terminal when the power supply voltage at the first power input terminal is greater than or equal to a preset voltage. If the power voltage output from the first power input terminal is lower than the preset voltage, the electrical connection between the battery and the first power output terminal is closed.

2. The intelligent toilet dual power supply circuit of claim 1, wherein, The switching circuit includes a relay, which has a moving contact, a stationary contact, and a trigger coil; The moving contact is connected to the first power output terminal, the stationary contact is connected to the battery, one end of the trigger coil is connected to the first power input terminal, and the other end of the trigger coil is grounded. When the voltage at the first power input terminal is greater than or equal to a preset voltage, the moving contact is disconnected from the stationary contact; when the power output voltage at the first power input terminal is lower than the preset voltage, the moving contact is closed to the stationary contact.

3. The intelligent toilet dual power supply circuit of claim 1, wherein, Also includes: Second power output terminal; A voltage conversion circuit is provided, wherein the input terminal of the voltage conversion circuit is connected to the first power output terminal, and the output terminal of the voltage conversion circuit is connected to the second power output terminal. The voltage conversion circuit is used to convert the voltage output from the first power output terminal and output it to the second power output terminal.

4. The intelligent toilet dual power supply circuit of claim 3, wherein, The voltage conversion circuit includes a step-down chip, a first capacitor, and a second capacitor; the input terminal of the step-down chip and one end of the first capacitor are connected to the first power output terminal, the output terminal of the step-down chip and one end of the second capacitor are connected to the second power output terminal, and the ground terminal of the step-down chip, the other end of the first capacitor, and the other end of the second capacitor are grounded.

5. A smart toilet, characterized by, It includes a toilet body and a smart toilet dual power supply circuit as described in any one of claims 1 to 4, disposed on the toilet body.

6. The intelligent toilet of claim 5, wherein, The smart toilet also includes: Flushing solenoid valve; A drive circuit, wherein the power supply terminal of the drive circuit is connected to the first power output terminal, and the drive output terminal of the drive circuit is connected to the flushing solenoid valve, and the drive circuit is used to drive the flushing solenoid valve to open / close. A trigger circuit, wherein the power supply terminal of the trigger circuit is connected to the first power output terminal, and the trigger circuit is used to output a first trigger level signal when triggered by the user; The main control circuit has its signal input terminal connected to the trigger circuit, its power supply terminal connected to the first power output terminal, and its signal output terminal connected to the controlled terminal of the drive circuit. The main control circuit is used to control the operation of the drive circuit according to the first trigger level signal.

7. The intelligent toilet of claim 6, wherein, The number of flushing solenoid valves is N, and the number of corresponding drive circuits is also N; The power input terminals of the N driving circuits are respectively connected to the first power output terminal, the controlled terminals of the N driving circuits are connected one-to-one with the N signal output terminals of the main control circuit, and the driving output terminal of the Nth driving circuit is connected to the Nth flushing solenoid valve. The main control circuit is used to control the operation of N driving circuits respectively according to the first trigger level signal; where N is a positive integer greater than 1.

8. The intelligent toilet of claim 6, wherein, The driving circuit includes a first resistor, a second resistor, a first switching transistor, and a first diode; One end of the first resistor is connected to the signal output terminal of the main control circuit, the other end of the first resistor and the controlled terminal of the first switching transistor are connected to one end of the second resistor, the first terminal of the first switching transistor and the positive terminal of the first diode are connected to the first power supply terminal of the flushing solenoid valve, and the second power supply terminal of the flushing solenoid valve is connected to the power supply terminal of the drive circuit.

9. The intelligent toilet of claim 6, wherein, The trigger circuit includes a third resistor, a fourth resistor, a third capacitor, and a flush button; One end of the flush button is grounded, and the other end of the flush button is connected to one end of the third resistor. The other end of the third resistor, one end of the fourth resistor, and one end of the third capacitor are connected to the signal input terminal of the main control circuit. The other end of the fourth resistor is connected to the power supply terminal of the trigger circuit, and the other end of the third capacitor is grounded.

10. The intelligent toilet according to any one of claims 6 to 9, wherein The main control circuit includes an MCU chip and a fourth capacitor; The signal input pin of the MCU chip is connected to the trigger circuit. The power supply pin of the MCU and the first power output terminal are connected to one end of the fourth capacitor. The ground pin of the MCU is grounded to the other end of the fourth capacitor. The signal output pin of the MCU is connected to the controlled terminal of the drive circuit.

Images