Double-micro-motor control system

Abstract

The utility model discloses a double micro-motor control system, mainly comprising a microprocessor MCU, a micro-motor M1, a micro-motor M2, a power supply circuit, a primary switch control circuit and a secondary switch control circuit, the power supply circuit is connected with the microprocessor MCU, the micro-motor M1 is connected with the primary switch control circuit, the micro-motor M2 is connected with the secondary switch control circuit, and the micro-motor M1 is connected with the secondary switch control circuit. The micro motor M2 is connected with the secondary switch control circuit; and the first-stage switch control circuit and the second-stage switch control circuit are both connected with the microprocessor MCU. According to the utility model, the whole structure is simple, and each micro motor is connected with one independent switch control circuit, so that the normal operation of each micro motor can be ensured, and the fault rate of the whole system can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, specifically to a dual micro motor control system. Background Technology

[0002] Micromotors, short for "miniature electric motors," refer to motors with a diameter less than 160mm or a rated power less than 750mW. Currently, micromotors are commonly used in control systems or transmission mechanical loads to perform functions such as detection, analysis, amplification, execution, or conversion of electromechanical signals or energy. Many existing micro or small products utilize the operation of micromotors to drive eccentric wheels, causing the entire micro or small product to vibrate at high frequencies to meet the needs of different application scenarios. However, the current control systems for these products are relatively complex in structure, especially when driving two micromotors. They often operate by connecting the drive circuits of the two micromotors in parallel, which not only leads to a high failure rate of the entire control system but also makes control extremely inconvenient, hindering widespread promotion and application. Utility Model Content

[0003] The purpose of this invention is to overcome the above problems and provide a dual micro motor control system that is simple in structure, has a low failure rate, and is easy to control.

[0004] The purpose of this utility model is achieved by the following technical solution: a dual micro motor control system, mainly composed of a microprocessor MCU, micro motor M1, micro motor M2, a power supply circuit, a first-level switch control circuit, and a second-level switch control circuit. The power supply circuit is connected to the microprocessor MCU, the micro motor M1 is connected to the first-level switch control circuit, and the micro motor M2 is connected to the second-level switch control circuit. Both the first-level switch control circuit and the second-level switch control circuit are connected to the microprocessor MCU.

[0005] Furthermore, a crystal oscillator circuit is also provided on the microprocessor MCU. In a preferred embodiment, the crystal oscillator circuit consists of a crystal oscillator X1, a capacitor C8, and a capacitor C9. One end of the crystal oscillator X1 is connected to one input port of the microprocessor MCU via capacitor C8, and the other end is connected to another input port of the microprocessor MCU via capacitor C9.

[0006] To ensure the operational effectiveness of this invention, the first-stage switch control circuit consists of a transistor Q1, a voltage divider resistor R1, and a voltage divider resistor R2. One end of the voltage divider resistor R2 is connected to the output pin of the microprocessor MCU, and the other end is grounded through the voltage divider resistor R1. The base of the transistor Q1 is connected to the junction of the voltage divider resistors R1 and R2, its emitter is grounded, and its collector is connected to the negative power supply terminal of the micro motor M1.

[0007] The secondary switch control circuit consists of transistor Q3, voltage divider resistors R8 and R9; one end of voltage divider resistor R8 is connected to the output pin of the microprocessor MCU, and the other end is grounded through voltage divider resistor R9; the base of transistor Q3 is connected to the junction of voltage divider resistors R8 and R9, its emitter is grounded, and its collector is connected to the negative power supply terminal of micro motor M2.

[0008] The positive power supply terminal of the micro motor M1 is connected to the positive power supply terminal of the micro motor M2, and then connected to the current output pin of the microprocessor MCU via resistor R7 and light-emitting diode D9.

[0009] To facilitate remote control, this utility model also includes a receiving antenna, which is connected to the microprocessor MCU via capacitor C7.

[0010] The power supply circuit consists of a rechargeable battery (BAT) and a charging circuit, wherein the charging circuit is composed of an XC4054 chip, an LY4054 chip, a TP4054 chip, or an ME4054 chip and its peripheral circuits.

[0011] To ensure that the micro motors are not damaged, a diode D1 is connected in series between the positive and negative terminals of the power supply of the micro motor M1, with the N-terminal of the diode D1 connected to the positive terminal of the power supply of the micro motor M1 and the P-terminal connected to the negative terminal of the power supply of the micro motor M1; a diode D5 is connected in series between the positive and negative terminals of the power supply of the micro motor M2, with the N-terminal of the diode D5 connected to the positive terminal of the power supply of the micro motor M2 and the P-terminal connected to the negative terminal of the power supply of the micro motor M2.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] (1) The overall structure of this utility model is simple, and each micro motor is connected to a separate switch control circuit, which not only ensures the normal operation of each micro motor, but also allows for independent control of the independent operation of each micro motor according to requirements, effectively reducing the failure rate of the entire system.

[0014] (2) The system of this utility model is also equipped with a receiving antenna, which can conveniently control the micro motor remotely through the controller, making the operation very convenient. Attached Figure Description

[0015] Figure 1 This is a block diagram of the overall circuit structure of this utility model;

[0016] Figure 2 This is the circuit schematic diagram of this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0018] Example

[0019] like Figure 1 As shown, the system consists of a microprocessor (MCU), micro motors M1 and M2, a power supply circuit, a primary switch control circuit, and a secondary switch control circuit. During connection, the power supply circuit is connected to the MCU to provide operating voltage and current for the MCU's operation. Simultaneously, the power supply circuit also provides operating voltage and current to micro motors M1 and M2 through the MCU.

[0020] The micro motor M1 is connected to the primary switch control circuit, while the micro motor M2 is connected to the secondary switch control circuit. Both the primary and secondary switch control circuits are connected to a microprocessor (MCU) to ensure that the MCU can control the on / off state of the primary and secondary switch control circuits, thereby controlling the independent or synchronous operation of the micro motors M1 and M2.

[0021] The specific circuit structure of this utility model is as follows: Figure 2 As shown, the microprocessor (MCU) can be of any model, as long as it can achieve the corresponding control. Similarly, other similar chips or electronic components can be used to replace the MCU. It should be noted that due to the different models or package forms of MCUs, the number of pins and the corresponding pin functions will be different. When connecting, simply connect the external electronic components to the pins with the corresponding functions; this will not affect the operation and control of the entire product.

[0022] For ease of understanding and explanation, this embodiment uses a 16-pin microprocessor (MCU). To ensure the accuracy of the MCU's clock signal and its performance, this embodiment also includes a crystal oscillator circuit on the MCU.

[0023] The crystal oscillator circuit consists of crystal X1, capacitor C8, and capacitor C9. One end of crystal X1 is connected to input port 16 of the microprocessor MCU via capacitor C8, and the other end is connected to input port 15 of the microprocessor MCU via capacitor C9. To ensure effective performance, the package size of crystal X1 is preferably 3.2×2.5×1.0mm, and its frequency is between 8 and 64MHz.

[0024] The primary switch control circuit consists of transistor Q1, voltage divider resistors R1 and R2. When connected, one end of voltage divider resistor R2 is connected to output pin 5 of the microprocessor MCU, and the other end is grounded through voltage divider resistor R1. The base of transistor Q1 is connected to the junction of voltage divider resistors R1 and R2, its emitter is grounded, and its collector is connected to the negative power supply terminal of micro motor M1.

[0025] The secondary switch control circuit consists of transistor Q3, voltage divider resistors R8 and R9. When connected, one end of voltage divider resistor R8 is connected to output pin 4 of the microprocessor MCU, and the other end is grounded through voltage divider resistor R9. The base of transistor Q3 is connected to the connection point of voltage divider resistors R8 and R9, its emitter is grounded, and its collector is connected to the negative power supply terminal of micro motor M2.

[0026] To facilitate simultaneous power supply to both micromotors M1 and M2 by the microprocessor MCU and simplify the circuit, during connection, the positive power terminals of micromotors M1 and M2 are first connected, then sequentially connected via resistor R7 and LED D9 to pin 6 of the microprocessor MCU's current output pin. Since current can only flow from pin 6 of the microprocessor MCU to the positive power terminals of both micromotors M1 and M2, the P-terminal of LED D9 must be connected to pin 6 of the microprocessor MCU's current output pin, while its N-terminal is connected to the positive power terminals of both micromotors M1 and M2.

[0027] The LED D9 emits light when the micro motor M1 or M2 is turned on, indicating that the micro motor M1 or M2 is in operation. To ensure the reliability of the display, an LED D10 is connected in parallel next to LED D9 as a bypass LED. Of course, depending on the needs, this embodiment may omit LEDs D9 and D10.

[0028] During operation, as long as the base of transistor Q1 or the base of transistor Q3 receives a control signal from the microprocessor (MCU), that is, the base of transistor Q1 receives base current from the connection point of voltage divider resistors R2 and R1, and the base of transistor Q3 receives base current from the connection point of voltage divider resistors R8 and R9, then transistors Q1 and Q3 will be turned on. At this time, micro motors M1 and M2 will be powered and run. Whether transistor Q1 or Q3 is turned on alone, or whether both transistors Q1 and Q3 are turned on simultaneously, is determined by the external control signal.

[0029] Meanwhile, to ensure that the current to micro motors M1 and M2 is not reversed and damaged, a diode needs to be connected in series between the positive and negative power supplies of micro motor M1 and micro motor M2. Specifically, diode D1 is connected in series between the positive and negative power supplies of micro motor M1, with its N-terminal connected to the positive power supply of micro motor M1 and its P-terminal connected to the negative power supply of micro motor M1. Similarly, diode D5 is connected in series between the positive and negative power supplies of micro motor M2, with its N-terminal connected to the positive power supply of micro motor M2 and its P-terminal connected to the negative power supply of micro motor M2.

[0030] To ensure the actual performance of this invention, diodes D1 and D5 are preferably implemented using T4 diodes.

[0031] To enable remote control, this system also includes a receiving antenna, which is connected to pin 2 of the microprocessor (MCU) via capacitor C7. This receiving antenna primarily uses a commonly used Bluetooth antenna.

[0032] To facilitate system control, a push-button switch SW2 is located on pin 10 of the microprocessor (MCU), and a push-button switch SW1 is located on pin 13 of the MCU. Specifically, one end of push-button switch SW2 is connected to pin 10 of the MCU, and the other end is grounded; similarly, one end of push-button switch SW1 is connected to pin 13 of the MCU, and the other end is grounded. In practical use, when push-button switches SW2 and SW1 are turned on or off, they can control the on / off state of the primary or secondary switch control circuit, thereby indirectly controlling the operation of micro motor M1 or micro motor M2. Which micro motor is controlled by push-button switches SW2 or SW1 can be configured according to actual requirements.

[0033] The power supply circuit consists of a rechargeable battery (BAT) and a charging circuit, which in turn consists of an XC4054 chip, LY4054 chip, TP4054 chip, or ME4054 chip and its peripheral circuitry. This embodiment uses the XC4054 chip and its peripheral circuitry for illustration; its specific circuit structure is as follows: Figure 2As shown, the control chip of this charging circuit is XC4054. Its peripheral circuit includes a charging interface P, transistors Q2 and Q3, and other additional electronic components. Their specific composition and connections are as follows: The base of transistor Q2 is connected to the positive terminal of the rechargeable battery BAT, its emitter is connected to pin 11 of the microprocessor MCU, and its collector is grounded. One end of bypass capacitors C5 and C6 is connected to the emitter of transistor Q2, and the other end is grounded. The base of transistor Q4 is connected to the negative terminal of the rechargeable battery BAT, its emitter is grounded, and its collector is connected to the BAT pin of the control chip XC4054 via resistor R10. Simultaneously, the BAT pin of the control chip XC4054 is also connected to the positive terminal of the rechargeable battery BAT. The positive terminal of the external charging interface P is connected to the Vcc port of the control chip XC4054. At the same time, the positive terminal of the charging interface P is also connected to pin 7 of the microprocessor MCU through diode D2 and resistor R4. One end of capacitor C3 is connected to the N terminal of diode D2 and the other end is grounded. One end of resistor R6 is connected to pin 7 of the microprocessor MCU and the other end is grounded.

[0034] As described above, this utility model can be well realized.

Claims

1. A dual-micro motor control system, characterized in that, It mainly consists of a microprocessor MCU, micro motors M1 and M2, a power supply circuit, a primary switch control circuit, and a secondary switch control circuit. The power supply circuit is connected to the microprocessor MCU, micro motor M1 is connected to the primary switch control circuit, and micro motor M2 is connected to the secondary switch control circuit. Both the primary and secondary switch control circuits are connected to the microprocessor MCU.

2. The dual micro-motor control system according to claim 1, characterized in that, The microprocessor (MCU) also includes a crystal oscillator circuit.

3. The dual micro-motor control system according to claim 2, characterized in that, The crystal oscillator circuit consists of crystal oscillator X1, capacitor C8, and capacitor C9. One end of crystal oscillator X1 is connected to one input port of the microprocessor MCU via capacitor C8, and the other end is connected to another input port of the microprocessor MCU via capacitor C9.

4. A dual micro-motor control system according to any one of claims 1 to 3, characterized in that, The primary switch control circuit consists of a transistor Q1, a voltage divider resistor R1, and a voltage divider resistor R2. One end of the voltage divider resistor R2 is connected to the output pin of the microprocessor MCU, and the other end is grounded through the voltage divider resistor R1. The base of the transistor Q1 is connected to the junction of the voltage divider resistors R1 and R2, its emitter is grounded, and its collector is connected to the negative power supply terminal of the micro motor M1.

5. A dual micro-motor control system according to claim 4, characterized in that, The secondary switch control circuit consists of transistor Q3, voltage divider resistors R8 and R9; one end of voltage divider resistor R8 is connected to the output pin of the microprocessor MCU, and the other end is grounded through voltage divider resistor R9; the base of transistor Q3 is connected to the junction of voltage divider resistors R8 and R9, its emitter is grounded, and its collector is connected to the negative power supply terminal of micro motor M2.

6. A dual micro-motor control system according to claim 5, characterized in that, The positive power supply terminal of the micro motor M1 is connected to the positive power supply terminal of the micro motor M2, and then connected to the current output pin of the microprocessor MCU through resistor R7 and light-emitting diode D9.

7. A dual micro-motor control system according to claim 5, characterized in that, The system also includes a receiving antenna, which is connected to the microprocessor (MCU) via capacitor C7.

8. A dual micro-motor control system according to claim 7, characterized in that, The power supply circuit consists of a rechargeable battery (BAT) and a charging circuit.

9. A dual micro-motor control system according to claim 8, characterized in that, The charging circuit is composed of an XC4054 chip, an LY4054 chip, a TP4054 chip, or an ME4054 chip and its peripheral circuits.

10. A dual micro-motor control system according to claim 9, characterized in that, A diode D1 is connected in series between the positive and negative terminals of the power supply of the micro motor M1, with the N terminal of the diode D1 connected to the positive terminal of the power supply of the micro motor M1 and the P terminal connected to the negative terminal of the power supply of the micro motor M1. A diode D5 is connected in series between the positive and negative terminals of the power supply of the micro motor M2, with the N terminal of the diode D5 connected to the positive terminal of the power supply of the micro motor M2 and the P terminal connected to the negative terminal of the power supply of the micro motor M2.

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