STC32-based non-inductive brushless motor driving device

Abstract

The utility model relates to the field of motor control, in particular to an STC32-based non-inductive brushless motor driving device, which comprises a circuit board, an STC32G12K128 single chip microcomputer is welded on the top of the circuit board, a motor A interface, a motor B interface and a motor C interface are respectively welded on the right side of the circuit board, and a TPN2R703NLMOS tube is welded on the right side of the top of the circuit board. Through cooperation of the indicating lamp, the power interface, the signal output interface, the motor A interface, the motor B interface and the motor C interface, the motor controller has the advantage of being convenient to use, a power supply is convenient to access through the power interface, signals can be output through the signal output interface, the motor is convenient to control, and the indicating lamp flickers when the motor rotates mistakenly, so that the motor controller is convenient to use. Therefore, the staff can be reminded in time, so that the staff can use the device conveniently. Through cooperation of the STC32G12K128 single-chip microcomputer, the FD6288Q pre-driving chip, the power supply step-down chip and the TPN2R703NLMOS tube, the circuit has the advantages of being stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of motor control, in particular to a sensorless brushless motor driving device based on STC32. Background Art

[0002] Motors are divided into two categories: DC motors and AC motors. DC motors can be divided into brushed motors and brushless motors. Commutation is required for the motor to rotate. Brushed motors complete commutation through their own commutator and carbon brushes, and can simply rotate with DC power. In order to have a longer life and higher speed, brushless motors do not have this part and cannot rotate when powered on. An external motor drive device is required to complete commutation.

[0003] After searching, the patent number is CN215186527U, and the name is a utility model of a motor drive device, including a processor. Through research and analysis, it is found that although the control circuit can not only control the built-in driver and the external driver, but also does not occupy other space on the circuit board, thus reducing the cost, it still has the following disadvantages to a certain extent.

[0004] For example, because it does not have easy-to-use functions, the staff cannot quickly get started using it, which increases the complexity of use. At the same time, it is large in size and inconvenient to install, the cost is high, and it does not have stable and reliable functions. Therefore, when driving the motor, the stable operation of the motor cannot be guaranteed, and it is easy to cause damage. In order to solve the above technical problems, we designed a brushless motor drive device based on STC32. Utility Model Content

[0005] The purpose of the utility model is to provide a sensorless brushless motor driving device based on STC32, which has the advantages of convenient use and stability and reliability, and solves the problems of not having the convenient use function and not having stability and reliability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sensorless brushless motor drive device based on STC32, comprising a circuit board, a STC32G12K128 single-chip microcomputer is welded on the top of the circuit board, a motor A interface, a motor B interface and a motor C interface are welded on the right side of the circuit board, a TPN2R703NLMOS tube is welded on the right side of the top of the circuit board, a power supply interface is welded on the left side of the top of the circuit board, and an FD6288Q pre-driver chip is welded on the bottom of the circuit board.

[0007] Preferably, a mounting groove is provided at the bottom of the circuit board, a power step-down chip is welded to the inner cavity of the mounting groove, and an indicator light is welded to the bottom of the circuit board.

[0008] Preferably, the input end of the STC32G12K128 single-chip microcomputer is electrically connected to a control signal input module, a zero-crossing detection module and a 5V voltage-stabilizing SEOKX module, respectively; the input end of the 5V voltage-stabilizing SEOKX module is electrically connected to a VBAT3S battery input module; the output end of the VBAT3S battery input module is electrically connected to a voltage-stabilizing tube; and the output end of the voltage-stabilizing tube is electrically connected to the input end of the FD6288Q pre-driver chip.

[0009] Preferably, the output end of the VBAT3S battery input module is electrically connected to a half bridge, the output end of the half bridge is electrically connected to a motor, and the input end of the zero-crossing detection module is electrically connected to the output end of the half bridge.

[0010] Preferably, an L-shaped plate is welded on the left side of the circuit board, and a limiting plate and a connecting plate are fixedly mounted on the surface of the power interface and the surface of the signal output interface respectively.

[0011] Preferably, the top of the connecting plate is connected to the bottom of the limiting plate by hot melt, and the left side of the L-shaped plate is welded to the right side of the limiting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is easy to use through the cooperation of indicator light, power interface, signal output interface, motor A interface, motor B interface and motor C interface. The power interface is convenient for connecting to the power supply. The signal output interface can output the signal to facilitate the control of the motor. When an error occurs in the rotation of the motor, the indicator light flashes to remind the staff in time, so as to facilitate the use of the staff. At the same time, the utility model has a small size and low cost, and can be produced and used in large quantities.

[0014] 2. The utility model cooperates with the STC32G12K128 single-chip microcomputer, the FD6288Q pre-driver chip, the power buck chip, and the TPN2R703NLMOS tube, and has the advantages of stability and reliability. When in use, the STC32G12K128 single-chip microcomputer can ensure that the motor can turn normally under high-speed rotation. At the same time, under the action of the TPN2R703NLMOS tube, it can ensure that the motor can rotate stably under a large load state. While driving the motor to run, the FD6288Q pre-driver chip can speed up the driving speed, so that the rotation signal of the STC32G12K128 single-chip microcomputer can be quickly received. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0017] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure;

[0018] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0019] Figure 5 This is the principle diagram of the utility model system.

[0020] In the figure: 1. Power interface; 2. Signal output interface; 3. FD6288Q pre-driver chip; 4. Power step-down chip; 5. Indicator light; 6. Motor A interface; 7. Motor B interface; 8. Motor C interface; 9. STC32G12K128 microcontroller; 10. TPN2R703NLMOS tube; 11. 5V voltage regulator SEOKX module; 12. Voltage regulator tube; 13. Circuit board; 14. VBAT3S battery input module; 15. Motor; 16. Zero-crossing detection module; 17. Control signal input module; 18. Half bridge; 19. Connection board; 20. Limit plate; 21. L-shaped board. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 5 , a sensorless brushless motor driving device based on STC32, comprising a circuit board 13, a STC32G12K128 single chip computer 9 is welded on the top of the circuit board 13, a motor A interface 6, a motor B interface 7 and a motor C interface 8 are welded on the right side of the circuit board 13, a TPN2R703NLMOS tube 10 is welded on the right side of the top of the circuit board 13, a power supply interface 1 is welded on the left side of the top of the circuit board 13, and a FD6288Q pre-driver chip 3 is welded on the bottom of the circuit board 13;

[0022] See also Figure 2 and Figure 3 A mounting groove is provided at the bottom of the circuit board 13, a power buck chip 4 is welded in the inner cavity of the mounting groove, and an indicator light 5 is welded at the bottom of the circuit board 13;

[0023] See also Figure 5The input end of the STC32G12K128 single-chip computer 9 is electrically connected to a control signal input module 17, a zero-crossing detection module 16 and a 5V voltage-stabilizing SEOKX module 11, respectively. The input end of the 5V voltage-stabilizing SEOKX module 11 is electrically connected to a VBAT3S battery input module 14. The output end of the VBAT3S battery input module 14 is electrically connected to a voltage-stabilizing tube 12. The output end of the voltage-stabilizing tube 12 is electrically connected to the input end of the FD6288Q pre-driver chip 3. By setting the control signal input module 17, various types of signals can be received, making data collection more convenient and efficient. By setting the VBAT3S battery input module 14, the battery status can be monitored and managed to determine the remaining battery power, the battery health status and whether charging is required;

[0024] See also Figure 5 The output end of the VBAT3S battery input module 14 is electrically connected to the half bridge 18, the output end of the half bridge 18 is electrically connected to the motor 15, the input end of the zero-crossing detection module 16 is electrically connected to the output end of the half bridge 18, and the half bridge 18 is set to control the conduction and cutoff of the high-side and low-side switching devices at appropriate time points, thereby controlling the output of the power supply voltage and the adjustment of the output power. By setting the zero-crossing detection module 16, the zero-crossing point of the AC signal can be detected in real time, and the triggering timing can be accurately determined, thereby achieving the accuracy and reliability of voltage control;

[0025] See also Figure 1 , Figure 2 and Figure 4 An L-shaped plate 21 is welded on the left side of the circuit board 13, and a limiting plate 20 and a connecting plate 19 are fixedly sleeved on the surface of the power interface 1 and the surface of the signal output interface 2 respectively;

[0026] See also Figure 1 , Figure 2 and Figure 4 The top of the connecting plate 19 is hot-melt connected to the bottom of the limiting plate 20, and the left side of the L-shaped plate 21 is welded to the right side of the limiting plate 20. By setting the limiting plate 20 and the connecting plate 19, the power interface 1 line and the signal output interface 2 line can be positioned, effectively preventing the tail of the power interface 1 line and the signal output interface 2 line from shaking and causing the tail to be disconnected;

[0027] When in use, the three phase wires of the motor 15 are welded to the motor A interface 6, the motor B interface 7 and the motor C interface 8 respectively, and the device is powered on through the VBAT3S battery input module 14 to rotate the motor 15. Then, the high-performance STC32G12K128 microcontroller 9 is used to ensure normal commutation at high speed. At the same time, the rotation commutation of the motor 15 is judged by the internal comparator of the STC32G12K128 microcontroller 9, reducing additional circuits. If there is an abnormal speed or stall, the STC32G12K128 microcontroller 9 will automatically enter the protection mode to protect The hardware is not damaged. At the same time, the TPN2R703NLMOS tube 10 ensures that the motor 15 can rotate stably under heavy load. Under the action of the FD6288Q pre-driver chip 3, it can be driven quickly, so that the rotation signal sent by the STC32G12K128 microcontroller 9 can be received in time, and the rotation signal can be sent to the TPN2R703NLMOS tube 10 in time. If an error occurs in the rotation of the motor 15, the indicator light 5 flashes, so that the staff can know and deal with it in time, thereby protecting the motor 15.

[0028] In summary: the inductive brushless motor drive device based on STC32 solves the problems of not having convenient functions and not having stability and reliability through the indicator light 5, the power interface 1, the signal output interface 2, the motor A interface 6, the motor B interface 7, the motor C interface 8, the STC32G12K128 microcontroller 9, the FD6288Q pre-driver chip 3, the power buck chip 4 and the TPN2R703NLMOS tube 10.

Claims

1. A sensorless brushless motor driving device based on STC32, comprising a circuit board (13), characterized in that: An STC32G12K128 single-chip computer (9) is welded on the top of the circuit board (13); a motor A interface (6), a motor B interface (7) and a motor C interface (8) are respectively welded on the right side of the circuit board (13); a TPN2R703NLMOS tube (10) is welded on the right side of the top of the circuit board (13); a power supply interface (1) is welded on the left side of the top of the circuit board (13); and an FD6288Q pre-driver chip (3) is welded on the bottom of the circuit board (13).

2. According to claim 1, a sensorless brushless motor driving device based on STC32 is characterized in that: The bottom of the circuit board (13) is provided with a mounting groove, the inner cavity of the mounting groove is welded with a power step-down chip (4), and the bottom of the circuit board (13) is welded with an indicator light (5).

3. The sensorless brushless motor driving device based on STC32 according to claim 1 is characterized in that: The input end of the STC32G12K128 single-chip computer (9) is electrically connected to a control signal input module (17), a zero-crossing detection module (16) and a 5V voltage-stabilizing SEOKX module (11), respectively; the input end of the 5V voltage-stabilizing SEOKX module (11) is electrically connected to a VBAT3S battery input module (14); the output end of the VBAT3S battery input module (14) is electrically connected to a voltage-stabilizing tube (12); and the output end of the voltage-stabilizing tube (12) is electrically connected to the input end of the FD6288Q pre-driver chip (3).

4. The sensorless brushless motor driving device based on STC32 according to claim 3 is characterized in that: The output end of the VBAT3S battery input module (14) is electrically connected to a half bridge (18), the output end of the half bridge (18) is electrically connected to a motor (15), and the input end of the zero-crossing detection module (16) is electrically connected to the output end of the half bridge (18).

5. The sensorless brushless motor driving device based on STC32 according to claim 1 is characterized in that: An L-shaped plate (21) is welded on the left side of the circuit board (13), and a limiting plate (20) and a connecting plate (19) are fixedly sleeved on the surface of the power interface (1) and the surface of the signal output interface (2), respectively.

6. The sensorless brushless motor driving device based on STC32 according to claim 5 is characterized in that: The top of the connecting plate (19) is connected to the bottom of the limiting plate (20) by hot melting, and the left side of the L-shaped plate (21) is welded to the right side of the limiting plate (20).

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