Novel baby carriage driving wheel circuit

Abstract

The utility model discloses a novel baby carriage driving wheel circuit, which comprises a motor control circuit, an interaction circuit, a power supply circuit and a low voltage detection circuit, the motor control circuit comprises a motor control chip with the model of CMS8M3533L032, a pin 1 of the motor control chip is connected with IOIN3A in series, a pin 2 of the motor control chip is connected with IOIN2A in series, a pin 3 of the motor control chip is connected with IOIN1A in series, and a pin 2 of the motor control chip is connected with IOIN2A in series. According to the utility model, the prior art is improved, in actual use, a novel baby carriage driving wheel circuit control scheme is provided, and in the field, a brushless non-inductive electric control scheme is adopted to replace an original brush motor, so that the overall cost, the overall size and the overall noise are reduced. The scheme is divided into three parts: a motor controller, a man-machine interaction part and a power supply.

Description

Technical Field

[0001] The utility model relates to the field of driving wheel circuits for baby carriages, and in particular to a novel driving wheel circuit for baby carriages. Background Art

[0002] At present, some existing baby stroller driving circuits are mainly composed of a power supply, a foot switch, a forward and reverse switching switch, a fast and slow switching switch, and a motor. The start and stop of the driving circuit motor are controlled by the closing and opening of the foot switch, thereby driving the baby stroller to move. Most existing baby strollers are driven by brushed motors, which have high overall cost, large size, and high noise. Utility Model Content

[0003] (I) Technical solution

[0004] In order to solve the problems raised in the above background technology, the specific technical solutions adopted by the utility model are as follows:

[0005] A novel baby carriage driving wheel circuit comprises a motor control circuit, an interactive circuit, a power supply circuit, a low voltage detection circuit, and the motor control circuit comprises a motor control chip of model CMS8M3533L032, wherein pin 1 of the motor control chip is connected in series with IOIN3A, pin 2 of the motor control chip is connected in series with IOIN2A, pin 3 of the motor control chip is connected in series with IOIN1A, pin 4 of the motor control chip is connected in series with IOIN0A, pin 5 of the motor control chip is connected in series with PGA P, pin 5 of the motor control chip is connected in series with PGA N, pin 7 of the motor control chip is connected in series with grounding, pin 8 of the motor control chip is connected in series with DSDA, pin 9 of the motor control chip is connected in series with VCC2-5V, capacitor C21 is connected in parallel in the circuit of motor control chip pin 7 connected in series with grounding and in the circuit of motor control chip pin 9 connected in series with VCC2-5V, pin 11 of the motor control chip is connected in series with BEF N, pin 12 of the motor control chip is connected in series with BEF U, pin 13 of the motor control chip is connected in series with BEF V, pin 14 of the motor control chip is connected in series with BEF W, motor control chip pin 16 is connected in series with gate driver pin 6, the gate driver model is CMS6164, motor control chip pin 17 is connected in series with gate driver pin 5, motor control chip pin 18 is connected in series with gate driver pin 4, motor control chip pin 19 is connected in series with gate driver pin 3, motor control chip pin 20 is connected in series with gate driver pin 2, motor control chip pin 21 is connected in series with gate driver pin 1, motor control chip pin 22 is connected in series with DSCK, motor control chip pin 23 is connected in series with LED2, motor control chip pin 24 is connected in series with resistor R40, and resistor R40 is connected in series with ground;

[0006] The gate driver pin 7 is connected in series with the ground, the circuit connected in series with the gate driver pin 7 and the gate driver pin 8 is connected in parallel with a capacitor C23, the capacitor C23 is connected in parallel with the ground, the gate driver pin 9 is connected in series with WL, the gate driver pin 10 is connected in series with VL, the gate driver pin 11 is connected in series with UL, the gate driver pin 12 and the gate driver pin 14 are connected in parallel with a capacitor C24, the gate driver pin 13 is connected in series with WH, the gate driver pin 15 and the gate driver pin 17 are connected in parallel with a capacitor C22, the gate driver pin 16 is connected in parallel with VH, the gate driver pin 18 and the gate driver pin 20 are connected in parallel with a capacitor C19, the gate driver pin 19 is connected in series with UH, the capacitor C22 and the capacitor C24 are connected in parallel with diodes D3 and D4 respectively, the capacitor C22 and the capacitor C1 are connected in parallel with a diode D2, the diode D2 is connected in series with a resistor R34, the resistor R34 is grounded, the circuit connected with the resistor R34 is connected in parallel with a capacitor C20, the capacitor C20 is grounded, the circuit connected with the capacitor C20 is connected in parallel with a capacitor C28, the circuit connected with the capacitor C20 being grounded and the circuit connected with the resistor R34 being grounded is connected in parallel with the capacitor C20;

[0007] LED2 is connected in series with resistor R305, VCC2-5V is connected in parallel with programming port 1, programming port 2 is grounded, programming port 3 is connected in series with DSCK, and programming port 4 is connected in series with DSDA.

[0008] Further, BEF N is respectively connected in parallel with resistors R9, R10 and R11, resistor R11 is respectively connected in parallel with resistor R17, resistor R20 and BEF W, resistor R20 is connected in parallel to ground, resistor R20 is connected in parallel with the grounded line and resistor R11 in parallel with capacitor C17 of the BEF W line, resistor R10 is respectively connected in parallel with resistors R16, R19 and BEF V, resistor R19 is connected in parallel to ground, resistor R19 is connected in parallel with the grounded line and resistor R10 in parallel with capacitor C16 of the BEF V line, resistor R9 is respectively connected in parallel with resistors R15, R18 and BEF U, resistor R18 is connected in parallel with the grounded line and resistor R9 in parallel with capacitor C15 of the BEF U line.

[0009] Further, UL is connected in series with resistor R24, resistor R24 ​​is connected in parallel with switch Q5 and resistor R27 respectively, resistor R27 is connected in parallel with switch Q2, resistor R27, resistor R28, switch Q7, resistor R29, R32 and resistor R31 respectively, switch Q2 is connected in parallel with resistor R12, resistor R21, switch Q3, switch Q4 and power supply U11 respectively, switch Q3 is connected in parallel with resistor R22, resistor R13 and switch Q6 respectively, switch Q4 is connected in parallel with resistor R14, resistor R23 and switch Q7 respectively, switch Q6 is connected in parallel with resistor R25, switch Q7 is connected in parallel with R26, resistor R31 is connected in parallel with resistor R30, and resistor R30 is connected to VCC2-5V.

[0010] Furthermore, the interactive circuit includes an interactive chip of model CH571F, interactive chip pin 1 is connected in series with X32KO, interactive chip pin 2 is connected in series with X32K1, interactive chip pin 3 is connected in series with VDC, interactive chip pin 4 is connected in series with inductor L1, the line of interactive chip pin 3 in series with inductor L1 and the line of interactive chip pin 4 in series with VDC are connected in parallel, inductor L1 is connected in series with capacitor C14, capacitor C14 is grounded, interactive chip pin 5 is respectively connected in parallel with VCC1-3V3 and capacitor C13, capacitor C13 is grounded, interactive chip pin 6 is connected in series with PA8, interactive chip pin 7 is connected in series with PA9, interactive chip pin 9 is connected in series with MODE1, interactive chip pin 10 is connected in series with MODE2, interactive chip pin 11 is connected in series with MODE3, interactive chip pin 12 is connected in series with DCM PWM2, and interactive chip pin 13 is connected in series with DCM PWM1, the interactive chip pin 15 is connected in series with LED1, LED1 is connected in series with resistor R8, and resistor R8 is grounded, the interactive chip pin 16 is connected in series with RST, the interactive chip pin 17 is connected in series with DOWN, the interactive chip pin 18 is connected in series with X32MO, the interactive chip pin 19 is connected in series with X32MI, the interactive chip pin 20 is connected in series with capacitor C9, and capacitor C9 is grounded, the interactive chip pin 21 is connected in parallel with resistor R7 and capacitor C11, resistor R7 is connected in parallel with ANTENNA and capacitor C10 respectively, and capacitor C11 and capacitor C10 are connected in parallel to ground, the interactive chip pin 22 is connected in parallel with VDC and capacitor C12 respectively, and capacitor C12 is grounded, the interactive chip pin 23 is connected in series with VBUS, the interactive chip pin 24 is connected in series with VBUS EN, the interactive chip pin 25 is connected in series with OIN3, the interactive chip pin 25 is connected in series with OIN2, the interactive chip pin 25 is connected in series with OIN1, and the interactive chip pin 25 is connected in series with OIN0.

[0011] Furthermore, the power supply circuit includes a switch Q1, the switch Q1 is connected in parallel with a resistor R3, PGND and PGND-IN respectively, PGND-IN is connected in series with D1, and D1 is connected in series with VBAT.

[0012] Furthermore, in the low voltage detection circuit, VBAT is connected in parallel with resistor R1, resistor R1 is connected in parallel with V-BUS, capacitor C31 and resistor R4 respectively, and capacitor C31 and resistor R4 are grounded.

[0013] (II) Beneficial effects

[0014] Compared with the prior art, the utility model provides a new baby carriage driving wheel circuit, which has the following beneficial effects:

[0015] (1) The utility model has made improvements on the existing technology. In actual use, the solution provides a new circuit control solution for the driving wheel of a baby carriage. In this field, a brushless and inductive electric control solution is used to replace the original brushed motor, so that the overall cost, volume and noise can be reduced. The solution is divided into three parts: including a motor controller, a human-computer interaction part and a power supply.

[0016] (2) The scheme adopts the six-step commutation of the DC brushless motor, uses the back electromotive force to detect the phase and perform current protection. The brushless motor in this scheme adopts the sensorless square wave drive of the DC brushless motor. The motor is a 5-pole motor and is equipped with a 37-ratio reducer at the motor shaft end to output power to the driving wheels of the baby carriage. Combined with the sensorless algorithm, there is almost no jitter during startup and operation. The function is equivalent to the original brush motor, but with greater power, higher efficiency and lower cost.

[0017] (3) The mutual part uses 2.4G remote control and steering wheel and throttle signal concurrent control, but the remote control is the priority. When the child operates improperly, the parents can use the remote control to remotely control and avoid the corresponding risks. The remote control can be paired with the receiver one by one. The remote control adopts low power design. When the remote control is disconnected for 30 seconds, the system enters low power consumption, and the power consumption is 30uA. According to the two sections, the power supply adopts MOS for anti-reverse connection protection, with small voltage drop, and transient suppression protection is added. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of a novel driving wheel circuit of a baby carriage according to an embodiment of the utility model;

[0019] Figure 2 It is a stereogram of a novel driving wheel circuit of a baby carriage according to an embodiment of the utility model;

[0020] Figure 3 It is a partial circuit diagram of a novel driving wheel circuit of a baby carriage according to an embodiment of the utility model;

[0021] Figure 4 The utility model is a busbar circuit diagram of a novel baby carriage driving wheel circuit according to an embodiment of the utility model.

[0022] Figure 5 This is an ESD protection circuit diagram of a new baby carriage driving wheel circuit according to an embodiment of the utility model;

[0023] Figure 6 It is a motor driving flow chart of a novel driving wheel circuit of a baby carriage according to an embodiment of the utility model;

[0024] Figure 7 The present invention is a flowchart of a remote controller for a novel baby carriage driving wheel circuit according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical solution of the present application, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 4 As shown, a novel driving wheel circuit of a baby carriage according to an embodiment of the utility model includes a motor control circuit, an interaction circuit, a power supply circuit and a low voltage detection circuit.

[0027] like Figure 1 As shown, the motor control circuit includes a motor control chip of model CMS8M3533L032, motor control chip pin 1 is connected in series with IOIN3A, motor control chip pin 2 is connected in series with IOIN2A, motor control chip pin 3 is connected in series with IOIN1A, motor control chip pin 4 is connected in series with IOIN0A, motor control chip pin 5 is connected in series with PGA P, motor control chip pin 5 is connected in series with PGA N, motor control chip pin 7 is connected in series with ground, motor control chip pin 8 is connected in series with DSDA, motor control chip pin 9 is connected in series with VCC2-5V, capacitor C21 is connected in parallel in the line connected in series with ground of motor control chip pin 7 and the line connected in series with VCC2-5V of motor control chip pin 9, motor control chip pin 11 is connected in series with BEF N, motor control chip pin 12 is connected in series with BEF U, motor control chip pin 13 is connected in series with BEF V, motor control chip pin 14 is connected in series with BEF W, motor control chip pin 16 is connected in series with gate driver pin 6, the gate driver model is CMS6164, motor control chip pin 17 is connected in series with gate driver pin 5, motor control chip pin 18 is connected in series with gate driver pin 4, motor control chip pin 19 is connected in series with gate driver pin 3, motor control chip pin 20 is connected in series with gate driver pin 2, motor control chip pin 21 is connected in series with gate driver pin 1, motor control chip pin 22 is connected in series with DSCK, motor control chip pin 23 is connected in series with LED2, motor control chip pin 24 is connected in series with resistor R40, and resistor R40 is connected in series with ground;

[0028] The gate driver pin 7 is connected in series with the ground, the circuit connected in series with the gate driver pin 7 and the gate driver pin 8 is connected in parallel with a capacitor C23, the capacitor C23 is connected in parallel with the ground, the gate driver pin 9 is connected in series with WL, the gate driver pin 10 is connected in series with VL, the gate driver pin 11 is connected in series with UL, the gate driver pin 12 and the gate driver pin 14 are connected in parallel with a capacitor C24, the gate driver pin 13 is connected in series with WH, the gate driver pin 15 and the gate driver pin 17 are connected in parallel with a capacitor C22, the gate driver pin 16 is connected in parallel with VH, the gate driver pin 18 and the gate driver pin 20 are connected in parallel with a capacitor C19, the gate driver pin 19 is connected in series with UH, the capacitor C22 and the capacitor C24 are connected in parallel with diodes D3 and D4 respectively, the capacitor C22 and the capacitor C1 are connected in parallel with a diode D2, the diode D2 is connected in series with a resistor R34, the resistor R34 is grounded, the circuit connected with the resistor R34 is connected in parallel with a capacitor C20, the capacitor C20 is grounded, the circuit connected with the capacitor C20 is connected in parallel with a capacitor C28, the circuit connected with the capacitor C20 being grounded and the circuit connected with the resistor R34 being grounded is connected in parallel with the capacitor C20;

[0029] LED2 is connected in series with resistor R305, VCC2-5V is connected in parallel with programming port 1, programming port 2 is grounded, programming port 3 is connected in series with DSCK, programming port 4 is connected in series with DSDA, BEF N is connected in parallel with resistors R9, R10 and R11 respectively, resistor R11 is connected in parallel with resistors R17, R20 and BEF W respectively, resistor R20 is connected in parallel with ground, resistor R20 is connected in parallel with the grounded line and resistor R11 is connected in parallel with capacitor C17, resistor R10 is connected in parallel with resistors R16, R19 and BEF V respectively, resistor R19 is connected in parallel with ground, resistor R19 is connected in parallel with the grounded line and resistor R10 is connected in parallel with capacitor C16, resistor R9 is connected in parallel with resistors R15, R18 and BEF U respectively, resistor R18 is connected in parallel with the grounded line and resistor R9 is connected in parallel with BEF The line of U is connected in parallel with capacitor C15, and UL is connected in series with resistor R24. Resistor R24 ​​is connected in parallel with switch Q5 and resistor R27 respectively. Resistor R27 is connected in parallel with switch Q2, resistor R27, resistor R28, switch Q7, resistor R29, R32 and resistor R31 respectively. Switch Q2 is connected in parallel with resistor R12, resistor R21, switch Q3, switch Q4 and power supply U11 respectively. Switch Q3 is connected in parallel with resistor R22, resistor R13 and switch Q6 respectively. Switch Q4 is connected in parallel with resistor R14, resistor R23 and switch Q7 respectively. Switch Q6 is connected in parallel with resistor R25. Switch Q7 is connected in parallel with R26. Resistor R31 is connected in parallel with resistor R30. Resistor R30 is connected to VCC2-5V.

[0030] Through the above technical solution, the brushless motor drive part is controlled by 8-bit machine + pre-driver, and the MOS of the 3-phase full-bridge circuit adopts DP3080C. The rated current can reach 80A, the sampling circuit adopts 1mR resistor (to ensure that the current loss is minimized as much as possible), and the sampling circuit is differentially sampled.

[0031] The back electromotive force of UVW is directly obtained from the UVW three-phase bus by using a voltage divider resistor, and the commutation point of the motor is determined by using 4-channel ADC acquisition, of which 3 ADCs correspond to the UVW three-phase and the other ADC corresponds to the back electromotive force reference.

[0032] like Figure 1-4 As shown, the interactive circuit includes an interactive chip of model CH571F, interactive chip pin 1 is connected in series with X32KO, interactive chip pin 2 is connected in series with X32K1, interactive chip pin 3 is connected in series with VDC, interactive chip pin 4 is connected in series with inductor L1, the line of interactive chip pin 3 in series with inductor L1 and the line of interactive chip pin 4 in series with VDC are connected in parallel, inductor L1 is connected in series with capacitor C14, capacitor C14 is grounded, interactive chip pin 5 is respectively connected in parallel with VCC1-3V3 and capacitor C13, capacitor C13 is grounded, interactive chip pin 6 is connected in series with PA8, interactive chip pin 7 is connected in series with PA9, interactive chip pin 9 is connected in series with MODE1, interactive chip pin 10 is connected in series with MODE2, interactive chip pin 11 is connected in series with MODE3, interactive chip pin 12 is connected in series with DCM PWM2, interactive chip pin 13 is connected in series with DCM PWM1, the interactive chip pin 15 is connected in series with LED1, LED1 is connected in series with resistor R8, and resistor R8 is grounded, the interactive chip pin 16 is connected in series with RST, the interactive chip pin 17 is connected in series with DOWN, the interactive chip pin 18 is connected in series with X32MO, the interactive chip pin 19 is connected in series with X32MI, the interactive chip pin 20 is connected in series with capacitor C9, and capacitor C9 is grounded, the interactive chip pin 21 is connected in parallel with resistor R7 and capacitor C11, resistor R7 is connected in parallel with ANTENNA and capacitor C10 respectively, and capacitor C11 and capacitor C10 are connected in parallel to ground, the interactive chip pin 22 is connected in parallel with VDC and capacitor C12 respectively, and capacitor C12 is grounded, the interactive chip pin 23 is connected in series with VBUS, the interactive chip pin 24 is connected in series with VBUS EN, the interactive chip pin 25 is connected in series with OIN3, the interactive chip pin 25 is connected in series with OIN2, the interactive chip pin 25 is connected in series with OIN1, and the interactive chip pin 25 is connected in series with OIN0.

[0033] Through the above technical solution, the minimum system of the remote control part is shown in the figure above. It uses a 2.4G chip for two-way transmission and reception, and uses MAC address + 3-digit random number for pairing to ensure pairing uniqueness. The random number is randomly generated during pairing.

[0034] like Figure 1-4As shown, the power supply circuit includes a switch Q1, the switch Q1 is respectively connected in parallel with a resistor R3, PGND and PGND-IN, PGND-IN is connected in series with D1, D1 is connected in series with VBAT, and in the low voltage detection circuit, VBAT is connected in parallel with a resistor R1, the resistor R1 is respectively connected in parallel with V-BUS, a capacitor C31 and a resistor R4, and the capacitor C31 and the resistor R4 are grounded.

[0035] Through the above technical solution, DP3080C MOS is used for reverse connection protection, with small internal resistance and low voltage drop. Transient suppression uses SMBJ15CA bidirectional reverse connection protection to protect the subsequent circuit, collect the bus voltage, and when the battery voltage is lower than the set threshold, it is judged as low voltage protection to prevent the car from triggering low voltage during operation and causing the drive system to lose power, thereby ensuring the safety of the baby carriage's power.

[0036] like Figure 5 As shown, the external interface adopts ESD protection to prevent electronic components from being damaged by static electricity.

[0037] The motor drive flow chart is as follows: Figure 6 As shown, the remote control flow chart is as follows Figure 7 shown.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of baby carriage driving wheel circuit, characterized in that: The invention comprises a motor control circuit, an interactive circuit, a power supply circuit and a low voltage detection circuit. The motor control circuit comprises a motor control chip of model CMS8M3533L032. Pin 1 of the motor control chip is connected in series with IOIN3A, pin 2 of the motor control chip is connected in series with IOIN2A, pin 3 of the motor control chip is connected in series with IOIN1A, pin 4 of the motor control chip is connected in series with IOIN0A, pin 5 of the motor control chip is connected in series with PGA P, pin 5 of the motor control chip is connected in series with PGA N, pin 7 of the motor control chip is connected in series with ground, pin 8 of the motor control chip is connected in series with DSDA, pin 9 of the motor control chip is connected in series with VCC2-5V, capacitor C21 is connected in parallel in the circuit of the motor control chip pin 7 connected in series with ground and in the circuit of the motor control chip pin 9 connected in series with VCC2-5V, pin 11 of the motor control chip is connected in series with BEF N, pin 12 of the motor control chip is connected in series with BEF U, pin 13 of the motor control chip is connected in series with BEF V, pin 14 of the motor control chip is connected in series with BEF W, the motor control chip pin 16 is connected in series with the pin 6 of the gate driver, the model of the gate driver is CMS6164, the motor control chip pin 17 is connected in series with the pin 5 of the gate driver, the motor control chip pin 18 is connected in series with the pin 4 of the gate driver, the motor control chip pin 19 is connected in series with the pin 3 of the gate driver, the motor control chip pin 20 is connected in series with the pin 2 of the gate driver, the motor control chip pin 21 is connected in series with the pin 1 of the gate driver, the motor control chip pin 22 is connected in series with DSCK, the motor control chip pin 23 is connected in series with LED2, the motor control chip pin 24 is connected in series with a resistor R40, and the resistor R40 is connected in series with ground; The gate driver pin 7 is connected to the ground in series, the circuit connected to the ground of the gate driver pin 7 in series is connected to the gate driver pin 8 in parallel with a capacitor C23, the capacitor C23 is connected to the ground in parallel, the gate driver pin 9 is connected to WL in series, the gate driver pin 10 is connected to VL in series, the gate driver pin 11 is connected to UL in series, the gate driver pin 12 and the gate driver pin 14 are connected to capacitor C24 in parallel, the gate driver pin 13 is connected to WH in series, the gate driver pin 15 and the gate driver pin 17 are connected to capacitor C22 in parallel, the gate driver pin 16 is connected to VH is connected in parallel to the gate driver pin 18 and the gate driver pin 20, and the gate driver pin 19 is connected in series with UH. The capacitor C22 and the capacitor C24 are connected in parallel with diodes D3 and D4 respectively. The capacitor C22 and the capacitor C1 are connected in parallel with diode D2. The diode D2 is connected in series with resistor R34. The resistor R34 is grounded. The circuit connected to the ground of the resistor R34 is connected in parallel with capacitor C20. The capacitor C20 is grounded. The circuit connected to the ground of the capacitor C20 and the circuit connected to the ground of the resistor R34 are connected in parallel with capacitor C20, and capacitor C28 is connected in parallel with the circuit connected to the ground of the capacitor C20. The LED2 is connected in series with the resistor R305, the VCC2-5V is connected in parallel with the burning port 1, the burning port 2 is grounded, the burning port 3 is connected in series with the DSCK, and the burning port 4 is connected in series with the DSDA.

2. A novel baby carriage driving wheel circuit according to claim 1, characterized in that: The BEF N is respectively connected in parallel with resistors R9, R10 and R11; the resistor R11 is respectively connected in parallel with resistors R17, R20 and BEF W; the resistor R20 is connected in parallel to ground; the resistor R20 is connected in parallel with the grounded line and the resistor R11 connected in parallel with capacitor C17 of the BEF W line; the resistor R10 is respectively connected in parallel with resistors R16, R19 and BEF V; the resistor R19 is connected in parallel to ground; the resistor R19 is connected in parallel with the grounded line and capacitor C16 of the BEF V line connected in parallel with resistor R10; the resistor R9 is respectively connected in parallel with resistors R15, R18 and BEF U; the resistor R18 is connected in parallel with the grounded line and capacitor C15 of the BEF U line connected in parallel with resistor R9.

3. A novel baby carriage driving wheel circuit according to claim 2, characterized in that: The UL is connected in series with a resistor R24, the resistor R24 ​​is connected in parallel with a switch Q5 and a resistor R27 respectively, the resistor R27 is connected in parallel with a switch Q2, a resistor R27, a resistor R28, a switch Q7, a resistor R29, R32 and a resistor R31 respectively, the switch Q2 is connected in parallel with a resistor R12, a resistor R21, a switch Q3, a switch Q4 and a power supply U11 respectively, the switch Q3 is connected in parallel with a resistor R22, a resistor R13 and a switch Q6 respectively, the switch Q4 is connected in parallel with a resistor R14, a resistor R23 and a switch Q7 respectively, the switch Q6 is connected in parallel with a resistor R25, the switch Q7 is connected in parallel with R26, the resistor R31 is connected in parallel with a resistor R30, and the resistor R30 is connected to VCC2-5V.

4. A novel baby carriage driving wheel circuit according to claim 3, characterized in that: The interactive circuit includes an interactive chip of model CH571F, wherein pin 1 of the interactive chip is connected in series with X32KO, pin 2 of the interactive chip is connected in series with X32K1, pin 3 of the interactive chip is connected in series with VDC, pin 4 of the interactive chip is connected in series with inductor L1, the line of the interactive chip pin 3 connected in series with inductor L1 and the line of the interactive chip pin 4 connected in series with VDC are connected in parallel, the inductor L1 is connected in series with capacitor C14, the capacitor C14 is grounded, the interactive chip pin 5 is respectively connected in parallel with VCC1-3V3 and capacitor C13, the capacitor C13 is grounded, the interactive chip pin 6 is connected in series with PA8, the interactive chip pin 7 is connected in series with PA9, the interactive chip pin 9 is connected in series with MODE1, the interactive chip pin 10 is connected in series with MODE2, the interactive chip pin 11 is connected in series with MODE3, the interactive chip pin 12 is connected in series with DCM PWM2, and the interactive chip pin 13 is connected in series with DCM PWM1, the interactive chip pin 15 is connected in series with LED1, LED1 is connected in series with resistor R8, and the resistor R8 is grounded, the interactive chip pin 16 is connected in series with RST, the interactive chip pin 17 is connected in series with DOWN, the interactive chip pin 18 is connected in series with X32MO, the interactive chip pin 19 is connected in series with X32MI, the interactive chip pin 20 is connected in series with capacitor C9, and the capacitor C9 is grounded, the interactive chip pin 21 is connected in parallel with resistor R7 and capacitor C11, the resistor R7 is connected in parallel with ANTENNA and capacitor C10 respectively, the capacitor C11 and capacitor C10 are connected in parallel to ground, the interactive chip pin 22 is connected in parallel with VDC and capacitor C12 respectively, and the capacitor C12 is grounded, the interactive chip pin 23 is connected in series with VBUS, the interactive chip pin 24 is connected in series with VBUSEN, the interactive chip pin 25 is connected in series with OIN3, the interactive chip pin 25 is connected in series with OIN2, the interactive chip pin 25 is connected in series with OIN1, and the interactive chip pin 25 is connected in series with OIN0.

5. A novel baby carriage driving wheel circuit according to claim 4, characterized in that: The power supply circuit includes a switch Q1 , the switch Q1 is connected in parallel to a resistor R3 , PGND and PGND-IN respectively, the PGND-IN is connected in series to D1 , and the D1 is connected in series to VBAT.

6. A novel baby carriage driving wheel circuit according to claim 5, characterized in that: In the low voltage detection circuit, VBAT is connected in parallel with a resistor R1, and the resistor R1 is connected in parallel with V-BUS, a capacitor C31 and a resistor R4 respectively, and the capacitor C31 and the resistor R4 are grounded.

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