Intelligent closestool working circuit

Abstract

The utility model discloses an intelligent closestool working circuit which comprises an MCU, the radar signal input end of the MCU is connected with the acquisition signal output end of a radar module, the driving signal output end of the MCU is connected with the driving signal input end of an H-bridge module, the driving signal output end of the H-bridge module is connected with the driving signal input end of a motor, and the intelligent closestool working circuit further comprises a power supply module used for supplying power. Human body detection is sensitive, and the intelligent closestool can be stably driven to be opened or closed.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent toilets, and in particular to a working circuit of an intelligent toilet. Background Art

[0002] With the advancement of technology and the improvement of people's living standards, more and more people choose to use smart homes. Especially smart toilets, which generally include functions such as automatic opening and closing of the lid, buttocks washing, female washing, warm air drying, automatic deodorization, and automatic flushing. The most commonly used function in smart toilets is the automatic opening and closing of the lid, which usually opens automatically after detecting the distance from the human body. However, as the use time increases, the motor cannot stably adjust the opening speed of the lid, etc., which easily causes a knocking sound when opening or closing. Therefore, it is particularly important to know how to stably open the lid of the smart toilet. Utility Model Content

[0003] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes an intelligent toilet working circuit, which has sensitive human body detection and can stably drive the intelligent toilet to open or close.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a smart toilet working circuit, including an MCU, wherein the MCU radar signal input end is connected to the radar module acquisition signal output end, the MCU drive signal output end is connected to the H-bridge module drive signal input end, the H-bridge module drive signal output end is connected to the motor drive signal input end, and also includes a power supply module for power supply.

[0005] In the above scheme: the power module includes a first power input terminal and a second power input terminal of a buck converter connected to a 5V voltage, a third power input terminal and a fourth power input terminal of the buck converter are 5V voltages, and the first common ground terminal and the second common ground terminal of the buck converter are both connected to the power ground;

[0006] The first switch node of the buck converter is connected to one end of the inductor L2, the other end of the inductor L2 outputs a 3.3V voltage, the other end of the inductor L2 is also connected to the first switch feedback end of the buck converter, one end of the capacitor C17 and one end of the capacitor C20, the other end of the capacitor C17 and the other end of the capacitor C20 are both connected to the power ground;

[0007] The second switch node of the buck converter is connected to one end of the inductor L5, the other end of the inductor L5 outputs a 1.2V voltage, the other end of the inductor L5 is also connected to the second switch feedback end of the buck converter, one end of the capacitor C24 and one end of the capacitor C23, the other end of the capacitor C24 and the other end of the capacitor C23 are both connected to the power ground;

[0008] The third switch node of the buck converter is connected to one end of the inductor L3, the other end of the inductor L3 outputs a 1V voltage, the other end of the inductor L3 is also connected to the third switch feedback end of the buck converter, one end of the capacitor C18 and one end of the capacitor C21, the other end of the capacitor C18 and the other end of the capacitor C21 are both connected to the power ground;

[0009] The fourth switch node of the buck converter is connected to one end of the inductor L4, the other end of the inductor L4 outputs a 1.8V voltage, the other end of the inductor L4 is also connected to the fourth switch feedback end of the buck converter, one end of the capacitor C19 and one end of the capacitor C22, the other end of the capacitor C19 and the other end of the capacitor C22 are both connected to the power ground;

[0010] The VANA pin of the buck converter is connected to a 5V voltage and one end of a capacitor C16, and the other end of the capacitor C16 is connected to a power ground.

[0011] In the above scheme: The H-bridge module includes a gate drive chip, the gate drive chip power supply voltage end is connected to the positive electrode of Schottky diode D1, one end of resistor R3, one end of capacitor C1 and 5V voltage, the other end of resistor R3 is connected to the gate drive chip SD# pin, the other end of capacitor C1 and the common end of the gate drive chip are both connected to the power ground, the gate drive chip signal input end is connected to the first PWM output end of the single-chip computer U3, the gate drive chip high suspension power supply end is connected to the negative electrode of Schottky diode D1 and one end of capacitor C2, the other end of capacitor C2 is connected to the high suspension ground end of the gate drive chip, the high-side gate drive output end of the gate drive chip is connected to one end of resistor R1, the other end of resistor R1 is connected to the gate of MOS tube Q1, the drain of MOS tube Q1 is connected to the power supply, the source of MOS tube Q1 is connected to the high suspension ground end of the gate drive chip, the motor A end and the positive electrode of Schottky diode D5, and the negative electrode of Schottky diode D5 is connected to the power supply;

[0012] The low-side gate drive output end of the gate drive chip is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the gate of the MOS tube Q2, the drain of the MOS tube Q2 is connected to the source of the MOS tube Q1, the source of the MOS tube Q2 is connected to the power ground and the positive electrode of the Schottky diode D6, and the negative electrode of the Schottky diode D6 is connected to the motor A terminal and the positive electrode of the Schottky diode D5;

[0013] It also includes a gate drive chip, the gate drive chip power supply voltage end is connected to the positive electrode of Schottky diode D2, one end of resistor R4, one end of capacitor C4 and 5V voltage, the other end of resistor R4 is connected to the gate drive chip SD# pin, the other end of capacitor C4 and the common end of the gate drive chip are both connected to the power ground, the gate drive chip signal input end is connected to the second PWM output end of the single-chip microcomputer U3, the gate drive chip high suspension power supply end is connected to the negative electrode of Schottky diode D2 and one end of capacitor C3, and the other end of capacitor C3 is connected to the high suspension ground end of the gate drive chip; the high-side gate drive output end of the gate drive chip is connected to one end of resistor R6, the other end of resistor R6 is connected to the gate of MOS tube Q3, the drain of MOS tube Q3 is connected to the power supply, the source of MOS tube Q3 is connected to the high suspension ground end of the gate drive chip, the motor B end and the positive electrode of Schottky diode D7, and the negative electrode of Schottky diode D7 is connected to the power supply;

[0014] The low-side gate drive output end of the gate drive chip is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the gate of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the source of the MOS tube Q3, the source of the MOS tube Q4 is connected to the power ground and the positive electrode of the Schottky diode D8, and the negative electrode of the Schottky diode D8 is connected to the B end of the motor and the positive electrode of the Schottky diode D7.

[0015] In the above scheme: the radar module clock communication signal end is connected to the controller clock communication signal end, the radar module communication signal output end is connected to one end of the resistor R11, the other end of the resistor R11 is connected to the controller communication signal input end, the radar module chip select signal end is connected to one end of the resistor R12, and the other end of the resistor R12 is connected to the controller chip select signal end;

[0016] The radar module crystal oscillator signal input end is connected to the third end of the crystal oscillator X1 and one end of the capacitor C7, the second end of the crystal oscillator X1, the fourth end of the crystal oscillator X1 and the other end of the capacitor C7 are connected to the power ground, the first end of the crystal oscillator X1 is connected to one end of the capacitor C5 and the radar module crystal oscillator signal output end, and the other end of the capacitor C5 is connected to the power ground;

[0017] The radar module PLL_VC pin is connected to one end of the capacitor C8 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the capacitor C9, and the other end of the capacitor C9 and the other end of the capacitor C8 are both connected to the power ground;

[0018] The working voltage end of the radar module is connected to the power supply end of the power module and one end of the capacitor C5, and the other end of the capacitor C5 is connected to the power ground; the DCDC_SW pin of the radar module is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to one end of the capacitor C10, the radar module VIN_T pin, the radar module VIN_R pin, the radar module VIN_D pin, the radar module VIN_A pin and one end of the capacitor C11, and the other end of the capacitor C11 and the other end of the capacitor C10 are both connected to the power ground.

[0019] In the above solution: the model of the radar module is S3KM111L.

[0020] In the above scheme: the model of the MCU is STM32F413RGT6.

[0021] In the above solution: the model of the buck converter is LP87524JRNFRQ1.

[0022] In the above solution: the motor is a reduction motor.

[0023] In summary, due to the adoption of the above technical solutions, the beneficial effects of the utility model are as follows: the H-bridge module provided can realize the forward and reverse control of the motor to realize the automatic opening and closing function, and the speed of the motor can be achieved by adjusting the PWM duty cycle technology. The power supply module provided can provide electrical energy to each electrical component, thereby realizing the stable operation of each electrical component. The MCU provided is responsible for processing sensor data and controlling the motor. It can determine whether the user is nearby based on the sensor data, and control the motor to realize automatic opening and closing. The radar module provided is sensitive to human body detection, so that the detection signal is sent to the MCU to process the sensor data, thereby stably driving the smart toilet to open or close. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 It is a circuit diagram of the working circuit of the intelligent toilet of the utility model;

[0026] Figure 2 This is the circuit diagram of the MCU;

[0027] Figure 3 This is the circuit diagram of the power module;

[0028] Figure 4 This is the circuit diagram of the H-bridge module;

[0029] Figure 5 This is the circuit diagram of the radar module;

[0030] Figure 6 It is a schematic diagram of a smart toilet;

[0031] Figure 7 It is a schematic diagram of the hinge of the smart toilet cover. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] like Figure 1~Figure 5 The working circuit of a smart toilet shown in the figure is applicable to a smart toilet cover. Figure 6 , 7 As shown, it includes a cover body 2, a seat ring 3 and a box-shaped mounting seat 4. The box-shaped mounting seat 4 is equipped with a motor 1, and the motor 1 is a reduction motor. The output end of the motor 1 is a spline shaft 1a, and the spline shaft 1a extends from one side of the box-shaped mounting seat 4. A pair of second hinged ears 3a are provided on the rear side of the seat ring 3, and the two second hinged ears 3a are respectively located on both sides of the mounting seat 4. A pair of first hinged ears 2a are provided on the inner side of the cover body 2, and the two first hinged ears 2a are respectively located on the outside of the two second hinged ears 3a, and the second hinged ears 3a are provided with a circular through hole for the spline shaft 1a to pass through. The corresponding first hinged ears 2a of the two first hinged ears 2a are provided with a spline hole matching the spline shaft 1a, and the spline shaft 1a passes through the circular through hole of the second hinged ear 3a and is spline-connected with the spline hole of the first hinged ear 2a. In addition, the first hinged lug 2a is provided with a pin 2b extending toward the cover body 2, and the pin 2b passes through the second hinged lug 3a and a side wall of the cover body 2 to be fixed, forming a flip cover structure. The first hinged lug 2a is automatically opened or closed by the motor 1, and the seat ring 3 is opened or closed by manual rotation. The radar module U4 is arranged at the front end of the cover body 2 to detect the position of the user.

[0034] Among them, a smart toilet working circuit includes MCUU3, the radar signal input end of MCUU3 is connected to the signal acquisition output end of radar module U4, the drive signal output end of MCUU3 is connected to the drive signal input end of H-bridge module, the drive signal output end of H-bridge module is connected to the motor drive signal input end, and also includes a power supply module for power supply.

[0035] The power supply module includes a first power input terminal and a second power input terminal of a buck converter U5 connected to a 5V voltage, a third power input terminal and a fourth power input terminal of the buck converter U5 connected to a 5V voltage, and a first common ground terminal and a second common ground terminal of the buck converter U5 are both connected to a power ground;

[0036] The first switch node of the buck converter U5 is connected to one end of the inductor L2, the other end of the inductor L2 outputs a 3.3V voltage, the other end of the inductor L2 is also connected to the first switch feedback end of the buck converter U5, one end of the capacitor C17 and one end of the capacitor C20, the other end of the capacitor C17 and the other end of the capacitor C20 are both connected to the power ground;

[0037] The second switch node of the buck converter U5 is connected to one end of the inductor L5, the other end of the inductor L5 outputs a 1.2V voltage, the other end of the inductor L5 is also connected to the second switch feedback end of the buck converter U5, one end of the capacitor C24 and one end of the capacitor C23, the other end of the capacitor C24 and the other end of the capacitor C23 are both connected to the power ground;

[0038] The third switch node of the buck converter U5 is connected to one end of the inductor L3, the other end of the inductor L3 outputs a 1V voltage, the other end of the inductor L3 is also connected to the third switch feedback end of the buck converter U5, one end of the capacitor C18 and one end of the capacitor C21, the other end of the capacitor C18 and the other end of the capacitor C21 are both connected to the power ground;

[0039] The fourth switch node of the buck converter U5 is connected to one end of the inductor L4, the other end of the inductor L4 outputs a 1.8V voltage, the other end of the inductor L4 is also connected to the fourth switch feedback end of the buck converter U5, one end of the capacitor C19 and one end of the capacitor C22, the other end of the capacitor C19 and the other end of the capacitor C22 are both connected to the power ground;

[0040] The VANA pin of the buck converter U5 is connected to the 5V voltage and one end of the capacitor C16, the other end of the capacitor C16 is connected to the power ground, and the power ground end of the buck converter U5 is also connected to the power ground.

[0041] The H-bridge module includes a gate driver chip U1, a power supply voltage end of the gate driver chip U1 is connected to the positive electrode of the Schottky diode D1, one end of the resistor R3, one end of the capacitor C1 and a 5V voltage, the other end of the resistor R3 is connected to the SD# pin of the gate driver chip U1, the other end of the capacitor C1 and the common end of the gate driver chip U1 are both connected to the power ground, the signal input end of the gate driver chip U1 is connected to the first PWM output end of the single-chip computer U3, the high suspension power supply end of the gate driver chip U1 is connected to the negative electrode of the Schottky diode D1 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the high suspension ground end of the gate driver chip U1, the high-side gate drive output end of the gate driver chip U1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the gate of the MOS tube Q1, the drain of the MOS tube Q1 is connected to the power supply, the source of the MOS tube Q1 is connected to the high suspension ground end of the gate driver chip U1, the motor A end and the positive electrode of the Schottky diode D5, and the negative electrode of the Schottky diode D5 is connected to the power supply;

[0042] The low-side gate drive output end of the gate drive chip U1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the gate of the MOS tube Q2, the drain of the MOS tube Q2 is connected to the source of the MOS tube Q1, the source of the MOS tube Q2 is connected to the power ground and the positive electrode of the Schottky diode D6, and the negative electrode of the Schottky diode D6 is connected to the A end of the motor;

[0043] It also includes a gate drive chip U2, the power supply voltage end of the gate drive chip U2 is connected to the positive electrode of the Schottky diode D2, one end of the resistor R4, one end of the capacitor C4 and a 5V voltage, the other end of the resistor R4 is connected to the gate drive chip U2SD# pin, the other end of the capacitor C4 and the common end of the gate drive chip U2 are both connected to the power ground, the signal input end of the gate drive chip U2 is connected to the second PWM output end of the single-chip computer U3, the high suspension power supply end of the gate drive chip U2 is connected to the negative electrode of the Schottky diode D2 and one end of the capacitor C3, and the other end of the capacitor C3 is connected to the high suspension ground end of the gate drive chip U2; the high-side gate drive output end of the gate drive chip U2 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to the gate of the MOS tube Q3, the drain of the MOS tube Q3 is connected to the power supply, the source of the MOS tube Q3 is connected to the high suspension ground end of the gate drive chip U2, the motor B end and the positive electrode of the Schottky diode D7, and the negative electrode of the Schottky diode D7 is connected to the power supply;

[0044] The low-side gate drive output end of the gate drive chip U2 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the gate of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the source of the MOS tube Q3, the source of the MOS tube Q4 is connected to the power ground and the positive electrode of the Schottky diode D8, and the negative electrode of the Schottky diode D8 is connected to the B end of the motor.

[0045] The clock communication signal end of the radar module U4 is connected to the clock communication signal end of the controller U3, the communication signal output end of the radar module U4 is connected to one end of the resistor R11 and the communication signal input end of the controller U3, and the chip select signal end of the radar module U4 is connected to one end of the resistor R12 and the chip select signal end of the controller U3; the other end of the resistor R11 and the other end of the resistor R12 are respectively connected to the power ground;

[0046] The crystal oscillator signal input end of the radar module U4 is connected to the third end of the crystal oscillator X1 and one end of the capacitor C7, the second end of the crystal oscillator X1, the fourth end of the crystal oscillator X1 and the other end of the capacitor C7 are connected to the power ground, the first end of the crystal oscillator X1 is connected to one end of the capacitor C5 and the crystal oscillator signal output end of the radar module U4, and the other end of the capacitor C5 is connected to the power ground;

[0047] The U4PLL_VC pin of the radar module is connected to one end of the capacitor C8 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the capacitor C9, and the other end of the capacitor C9 and the other end of the capacitor C8 are both connected to the power ground;

[0048] The working voltage end of the radar module U4 is connected to the 1.8V voltage and one end of the capacitor C5, and the other end of the capacitor C5 is connected to the power ground; the radar module U4DCDC_SW pin is connected to one end of the inductor L1, the other end of the inductor L1 is connected to one end of the capacitor C10, the radar module U4VIN_T pin, the radar module U4VIN_R pin, the radar module U4VIN_D pin, the radar module U4VIN_A pin and one end of the capacitor C11, and the other end of the capacitor C11 and the other end of the capacitor C10 are both connected to the power ground.

[0049] Among them, the model of radar module U4 is S3KM111L, the model of MCUU3 is STM32F413RGT6, and the model of buck converter U5 is LP87524JRNFRQ1. The selected buck converter U5 is a highly integrated power management solution that integrates multiple functional modules, including multiple voltage regulators, monitoring circuits and other special functions. It usually has multiple independent power output channels, which can provide independent power supplies for different subsystems or components in the system. It can provide efficient power conversion and help reduce power consumption. It supports programmable power management functions, allowing system designers to customize and optimize according to the needs of specific applications. It is also suitable for mobile devices and portable systems, and may have a low-power design to help extend battery life. Provide a certain degree of temperature stability to ensure reliability and performance under different working conditions.

[0050] Since sufficient power is required to drive the motor 1, a rechargeable battery or a direct connection to a power line may be selected. A low power design is preferred to extend battery life or reduce energy consumption.

Claims

1. A smart toilet working circuit, characterized in that: It comprises an MCU (U3), wherein a radar signal input terminal of the MCU (U3) is connected to a signal acquisition output terminal of a radar module (U4), a drive signal output terminal of the MCU (U3) is connected to a drive signal input terminal of an H-bridge module, and the drive signal output terminal of the H-bridge module is connected to a drive signal input terminal of a motor (1), and also comprises a power supply module for power supply; The power module comprises a first power input terminal and a second power input terminal of a buck converter (U5) connected to a 5V voltage, a third power input terminal and a fourth power input terminal of the buck converter (U5) having a 5V voltage, and a first common ground terminal and a second common ground terminal of the buck converter (U5) both connected to a power ground; The first switch node of the buck converter (U5) is connected to one end of the inductor L2, the other end of the inductor L2 outputs a 3.3V voltage, the other end of the inductor L2 is also connected to the first switch feedback end of the buck converter (U5), one end of the capacitor C17 and one end of the capacitor C20, the other end of the capacitor C17 and the other end of the capacitor C20 are both connected to the power ground; The second switch node of the buck converter (U5) is connected to one end of the inductor L5, the other end of the inductor L5 outputs a 1.2V voltage, the other end of the inductor L5 is also connected to the second switch feedback end of the buck converter (U5), one end of the capacitor C24 and one end of the capacitor C23, the other end of the capacitor C24 and the other end of the capacitor C23 are both connected to the power ground; The third switch node of the buck converter (U5) is connected to one end of the inductor L3, the other end of the inductor L3 outputs a 1V voltage, the other end of the inductor L3 is also connected to the third switch feedback end of the buck converter (U5), one end of the capacitor C18 and one end of the capacitor C21, the other end of the capacitor C18 and the other end of the capacitor C21 are both connected to the power ground; The fourth switch node of the buck converter (U5) is connected to one end of the inductor L4, the other end of the inductor L4 outputs a 1.8V voltage, the other end of the inductor L4 is also connected to the fourth switch feedback end of the buck converter (U5), one end of the capacitor C19 and one end of the capacitor C22, the other end of the capacitor C19 and the other end of the capacitor C22 are both connected to the power ground; The VANA pin of the buck converter (U5) is connected to a 5V voltage and one end of a capacitor C16, and the other end of the capacitor C16 is connected to a power ground; The H-bridge module comprises a gate drive chip U1, wherein the power supply voltage end of the gate drive chip U1 is connected to the positive electrode of the Schottky diode D1, one end of the resistor R3, one end of the capacitor C1 and a 5V voltage, the other end of the resistor R3 is connected to the SD# pin of the gate drive chip U1, the other end of the capacitor C1 and the common end of the gate drive chip U1 are both connected to the power ground, the signal input end of the gate drive chip U1 is connected to the first PWM output end of the single-chip computer U3, the high suspension power supply end of the gate drive chip U1 is connected to the negative electrode of the Schottky diode D1 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the high suspension ground end of the gate drive chip U1, the high-side gate drive output end of the gate drive chip U1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the gate of the MOS tube Q1, the drain of the MOS tube Q1 is connected to the power supply, the source of the MOS tube Q1 is connected to the high suspension ground end of the gate drive chip U1, the A end of the motor (1) and the positive electrode of the Schottky diode D5, and the negative electrode of the Schottky diode D5 is connected to the power supply; The low-side gate drive output end of the gate drive chip U1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the gate of the MOS tube Q2, the drain of the MOS tube Q2 is connected to the source of the MOS tube Q1, the source of the MOS tube Q2 is connected to the power ground and the positive electrode of the Schottky diode D6, and the negative electrode of the Schottky diode D6 is connected to the A terminal of the motor (1) and the positive electrode of the Schottky diode D5; It also includes a gate drive chip U2, wherein the power supply voltage end of the gate drive chip U2 is connected to the positive electrode of the Schottky diode D2, one end of the resistor R4, one end of the capacitor C4 and a 5V voltage, the other end of the resistor R4 is connected to the SD# pin of the gate drive chip U2, the other end of the capacitor C4 and the common end of the gate drive chip U2 are both connected to the power ground, the signal input end of the gate drive chip U2 is connected to the second PWM output end of the single-chip computer U3, the high suspension power supply end of the gate drive chip U2 is connected to the negative electrode of the Schottky diode D2 and one end of the capacitor C3, and the other end of the capacitor C3 is connected to the high suspension ground end of the gate drive chip U2; the high-side gate drive output end of the gate drive chip U2 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to the gate of the MOS tube Q3, the drain of the MOS tube Q3 is connected to the power supply, the source of the MOS tube Q3 is connected to the high suspension ground end of the gate drive chip U2, the B end of the motor (1) and the positive electrode of the Schottky diode D7, and the negative electrode of the Schottky diode D7 is connected to the power supply; The low-side gate drive output end of the gate drive chip U2 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the gate of the MOS transistor Q4, the drain of the MOS transistor Q4 is connected to the source of the MOS transistor Q3, the source of the MOS transistor Q4 is connected to the power ground and the positive electrode of the Schottky diode D8, and the negative electrode of the Schottky diode D8 is connected to the B end of the motor (1) and the positive electrode of the Schottky diode D7.

2. According to claim 1, the intelligent toilet working circuit is characterized in that: The clock communication signal end of the radar module (U4) is connected to the clock communication signal end of the controller (U3); the communication signal output end of the radar module (U4) is connected to one end of a resistor R11, the other end of the resistor R11 is connected to the communication signal input end of the controller (U3); the chip select signal end of the radar module (U4) is connected to one end of a resistor R12, the other end of the resistor R12 is connected to the chip select signal end of the controller (U3); The crystal oscillator signal input end of the radar module (U4) is connected to the third end of the crystal oscillator X1 and one end of the capacitor C7, the second end of the crystal oscillator X1, the fourth end of the crystal oscillator X1 and the other end of the capacitor C7 are connected to the power ground, the first end of the crystal oscillator X1 is connected to one end of the capacitor C5 and the crystal oscillator signal output end of the radar module (U4), and the other end of the capacitor C5 is connected to the power ground; The radar module (U4) PLL _VC pin is connected to one end of the capacitor C8 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the capacitor C9, and the other end of the capacitor C9 and the other end of the capacitor C8 are both connected to the power ground; The working voltage end of the radar module (U4) is connected to the power supply end of the power module and one end of the capacitor C5, and the other end of the capacitor C5 is connected to the power ground; the DCDC_SW pin of the radar module (U4) is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to one end of the capacitor C10, the VIN_T pin of the radar module (U4), the VIN_R pin of the radar module (U4), the VIN_D pin of the radar module (U4), the VIN_A pin of the radar module (U4) and one end of the capacitor C11, and the other end of the capacitor C11 and the other end of the capacitor C10 are both connected to the power ground.

3. The intelligent toilet working circuit according to claim 2, characterized in that: The model of the radar module (U4) is S3KM111L.

4. The intelligent toilet working circuit according to claim 1, characterized in that: The model of the MCU (U3) is STM32F413RGT6.

5. The intelligent toilet working circuit according to claim 1, characterized in that: The buck converter (U5) is of the type LP87524JRNFRQ1.

6. The intelligent toilet working circuit according to claim 1, characterized in that: The motor (1) is a reduction motor.

Images