Control circuit for realizing motor braking through two-wire lap joint
By using a two-wire interconnected control circuit design, combined with MCU, SW-SPDT switch, diode and transistor, the problems of inconsistent motor positions and high-cost wiring in food processing machines are solved, achieving stable motor stopping and extended lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-27
AI Technical Summary
The existing control circuit of the food processing machine conveyor motor cannot ensure that the stopping position is consistent every time and does not require manual reset. In addition, the four-wire connection results in high wiring costs, and the brake circuit of the conveyor motor is not integrated into the motor, which makes the control program complicated.
The control circuit design employs a two-wire connection, including an MCU control unit, an SW-SPDT switch, a motor, and a combination of diodes, capacitors, resistors, and transistors. The reverse current is dissipated by the transistors to achieve motor braking, and the circuit voltage is stabilized by the diodes and capacitors.
This technology enables the motor to stop without delay after the power is cut off, improving circuit stability and motor lifespan, reducing wiring costs, and simplifying the control program.
Smart Images
Figure CN224054132U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of the goods channel motor control circuit of food machine, specifically relates to a control circuit that two line lap joint realizes the brake of motor. BACKGROUND
[0002] For the goods channel motor of food machine, the customer extremely hopes that the motor stop position is always the same each time and does not need to manually reset the motor stop position, but the existing equipment control circuit cannot satisfy the demand of the customer.
[0003] Moreover, the existing is through four lines lap joint motor food machine, such as Figure 2 As shown, resulting in the problem of high cost of goods channel motor related wiring.
[0004] In addition, for the food machine, the circuit of the brake of goods channel motor is not integrated on the goods channel motor, resulting in the control program algorithm being complex, and the circuit of the motor control part of MCU substrate cannot be replaced by hardware. UTILITY MODEL CONTENTS
[0005] In order to solve the defects in the prior art, provide a kind of control circuit that two line lap joint realizes the brake of motor, including MCU control unit P1, MCU control unit P2, motor M01 and SW-SPDT switch, MCU control unit P2 is connected with MCU control unit P1 one way, MCU control unit P2 is connected with MCU control unit P1 by SW-SPDT switch another way, MCU control unit P1 output one way is connected with the anode of motor M01, and the other two ways of MCU control unit P1 output are connected with the cathode of motor M01 after parallel connection.
[0006] Further, it further includes diode D1, diode D2, capacitor C1, diode D1 is connected in series on the one way of the output of MCU control unit P1 connected with the anode of motor M01, diode D2 and capacitor C1 are connected in parallel between the cathode of diode D1 and the cathode of motor M01 respectively.
[0007] Further, it further includes resistance R1, and resistance R1 is connected in parallel between the anode of diode D1 and the cathode of motor M01.
[0008] Further, it further includes triode Q1, the emitter of the triode Q1 is connected with the cathode of diode D1, the base of the triode Q1 is connected with the anode of diode D1, and the collector of the triode Q1 is connected with the cathode of motor M01.
[0009] Further, the model of the triode Q1 is 2SD772PU.
[0010] Further, the triode Q1 is in the off state under forward current, and the triode Q1 becomes the on state only when the reverse current appears in the circuit, and the triode Q1 consumes the excess reverse current in the circuit.
[0011] Further, the triode Q1 is in the off state under forward current, and the triode Q1 becomes the on state only when the reverse current appears in the circuit, and the triode Q1 consumes the excess reverse current in the circuit.
[0012] The beneficial effects of the utility model are:
[0013] 1. The utility model discloses a motor generates induction electromotive force reverse direction circuit charging, and the emitter and the base of PNP triode Q1 make resistance R1 conduct, and the collector of triode Q1 also conducts after resistance R1 conducts. The induction electromotive force generated by motor kinetic energy is reasonably offset by the heat energy that the electric energy in the circuit is converted into by triode Q1, and the utility model makes the induction electromotive force generated by motor kinetic energy disappear.
[0014] 2. Diode D2, D1 and capacitor C1 guarantee the circuit voltage stability, protect motor M01 stable operation, improve the circuit stability, prolong the motor service life.
[0015] 3. The utility model guarantees that the motor action stops without delay after cutting off the power supply. ACCURACY
[0016] Figure 1 It is the control circuit principle diagram that the utility model two line lap joint realizes motor brake;
[0017] Figure 2 It is the four line motor loop principle diagram of prior art. CONCRETE IMPLEMENTATION
[0018] A two line lap joint realizes motor brake's control circuit, as Figure 1 Shown, including MCU control unit P1, MCU control unit P2, motor M01 and SW-SPDT switch, MCU control unit P2 is connected with MCU control unit P1, and MCU control unit P2 is connected with MCU control unit P1 through SW-SPDT switch, and MCU control unit P1 output is connected with the anode of motor M01, and the other two roads of MCU control unit P1 output are connected with the cathode of motor M01 in parallel.
[0019] Including diode D1, diode D2, capacitor C1, diode D1 is connected in series on the output of MCU control unit P1 that is connected with the anode of motor M01, and diode D2, capacitor C1 are connected in parallel between the cathode of diode D1 and the cathode of motor M01 respectively.
[0020] Wherein, still include resistance R1, resistance R1 is connected in parallel between the anode of diode D1 and the negative pole of motor M01.
[0021] Wherein, still include triode Q1, the emitter of triode Q1 is connected with the negative pole of diode D1, the base of triode Q1 is connected with the anode of diode D1, and the collector of triode Q1 is connected with the negative pole of motor M01.
[0022] Wherein, the model of triode Q1 is 2SD772PU.
[0023] Wherein, triode Q1 is in cut-off state under forward current, and only when reverse current appears in the circuit, triode Q1 becomes conducting state, and triode Q1 consumes the excess reverse current in the circuit.
[0024] Wherein, diode D3 is arranged on the branch where the base of triode Q1 is connected with the anode of diode D1.
[0025] The working principle of the control circuit for realizing motor brake by two-wire lapping of the utility model is as follows:
[0026] MCU control unit P2 inputs 24V voltage M01 motor rotates, and after rotating 1 week, press switch S1 control unit P2 to cut off 24V power supply and stop motor rotating.
[0027] Diode D2, diode D1 and capacitor C1 can guarantee circuit voltage stability, protect motor M01 stable operation and prolong motor life.
[0028] Motor stops instantaneous energy and charges reversely to the circuit, and reverse current makes triode Q1 conduct, which can consume the part of reverse current.
[0029] Triode Q1 is in cut-off state under forward current, and only when reverse current appears in the circuit, triode Q1 becomes conducting state.
[0030] The working process of the control circuit for realizing motor brake by two-wire lapping of the utility model is as follows:
[0031] 1. When motor delivery action is completed, the state of switch S1 changes, and the power supply is cut off, and at this time, the kinetic energy of motor will not disappear. The kinetic energy of motor needs to be converted into heat energy, so as to realize the brake of motor.
[0032] 2. Motor generates induced electromotive force reversely charging the circuit, and through the emitter and base of PNP triode Q1, resistance R1 is conducted, and after resistance R1 is conducted, the collector of triode Q1 is also conducted. Triode Q1 consumes the electric energy in the circuit and converts it into heat energy, and the induced electromotive force generated by motor kinetic energy is reasonably offset by heat energy.
[0033] 3. Increase diode D2, D1 and capacitor C1, prevent the current has a sudden change or decrease, produce mutation voltage, destroy other components, so that the current can be more gently change.
[0034] 4. Increase diode D3 makes the triode smooth conduction, ensure that the voltage of the triode base end is greater than the voltage of the emitter end in normal state.
[0035] The above only is the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, under the premise of, can also make a number of improvements and variations, these improvements and variations should also be considered as the protection scope of the present application.
Claims
1. A control circuit for two-wire overlap to realize a motor brake, characterized by, MCU control unit P1, MCU control unit P2, motor M01 and SW-SPDT switch, MCU control unit P2 is connected with MCU control unit P1, MCU control unit P2 is connected with MCU control unit P1 through SW-SPDT switch, MCU control unit P1 output is connected with the positive pole of motor M01, MCU control unit P1 output is connected with the negative pole of motor M01 after being connected in parallel.
2. The control circuit for two-wire lapping implementation of a motor brake according to claim 1, characterized in that, It also includes diode D1, diode D2, capacitor C1, diode D1 is connected in series on the output of MCU control unit P1 connected with the positive pole of motor M01, diode D2 and capacitor C1 are connected in parallel between the negative pole of diode D1 and the negative pole of motor M01 respectively.
3. The control circuit for two-wire lapping implementation of a motor brake according to claim 2, characterized in that, It also includes resistor R1, resistor R1 is connected in parallel between the positive pole of diode D1 and the negative pole of motor M01.
4. The control circuit for two-wire lapping implementation of a motor brake according to claim 2, characterized in that, It also includes triode Q1, the emitter of triode Q1 is connected with the negative pole of diode D1, the base of triode Q1 is connected with the positive pole of diode D1, the collector of triode Q1 is connected with the negative pole of motor M01.
5. The control circuit for two-wire lapping motor brake according to claim 4, wherein, The model of triode Q1 is 2SD772PU.
6. The control circuit for two-wire lapping motor brake according to claim 4, wherein, The triode Q1 is in cut-off state under forward current, only when reverse current appears in the circuit, triode Q1 will become conductive state, and triode Q1 consumes the excess reverse current in the circuit.
7. The control circuit for two-wire lapping motor brake according to claim 4, wherein Diode D3 is arranged on the branch of the base of triode Q1 connected with the positive pole of diode D1.