CN218416222U

CN218416222U - Novel motor speed regulation circuit

Info

Publication number: CN218416222U
Application number: CN202222213738.9U
Authority: CN
Inventors: 李应居
Original assignee: Foshan Shunde Yihu Electronic Technology Co ltd
Current assignee: Foshan Shunde Yihu Electronic Technology Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-31
Anticipated expiration: 2032-08-23

Abstract

The utility model relates to the technical field of motor control, specifically disclose a novel motor speed governing circuit, including switch module and mainboard module, switch module includes gear switch K1, including opto-coupler unit, MCU decoding unit and motor drive unit on the mainboard module, opto-coupler unit with the switch module electricity is connected, opto-coupler unit with MCU decoding unit electricity is connected, MCU decoding unit is used for the different current change in the identification circuit, MCU decoding unit with motor drive unit electricity is connected, motor drive unit is used for driving the motor work; one end of the switch module is connected with a live wire supplied by a power grid, the other end of the switch module is connected with the mainboard module, and the other end of the mainboard module is connected with a zero line supplied by the power grid. Through the mode, the whole process does not need to be matched with excessive peripheral circuits, the communication line special for communication is saved, and the device is few, the cost is low, the installation is convenient and the reliability is high.

Description

Novel motor speed regulation circuit

Technical Field

The utility model relates to a motor control technical field especially relates to a novel motor speed governing circuit.

Background

At present, an upper computer is generally adopted to regulate the speed of a direct current motor, the speed regulation principle is complex, a plurality of devices are needed, the control cost is high, the reliability is poor, and great inconvenience is brought to a user.

For this reason, a solution is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel motor speed governing circuit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the technical scheme of the utility model has:

a novel motor speed regulation circuit comprises a switch module and a mainboard module, wherein the switch module comprises a gear switch K1, the mainboard module comprises an optical coupling unit, an MCU decoding unit and a motor driving unit, the optical coupling unit is electrically connected with the switch module, the optical coupling unit is electrically connected with the MCU decoding unit, the MCU decoding unit is used for identifying different current changes in the circuit, the MCU decoding unit is electrically connected with the motor driving unit, and the motor driving unit is used for driving a motor to work; one end of the switch module is connected with a live wire supplied by a power grid, the other end of the switch module is connected with the mainboard module, and the other end of the mainboard module is connected with a zero line supplied by the power grid.

Optionally, the gear switch K1 is provided with a plurality of gears, and at least 1 gear is connected with the diode.

Optionally, 5 gears are arranged on the gear switch K1 and are respectively a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the first gear is electrically connected with a diode D1, the second gear is electrically connected with a diode D2, the third gear is electrically connected with a diode D3, the diode D3 is further connected with a first resistor in parallel, the fourth gear is electrically connected with a diode D4, the diode D4 is further connected with a second resistor in parallel, and the fifth gear is electrically connected with the mainboard module.

Optionally, the optical coupling unit includes first opto-coupler PC1, second opto-coupler PC2 and third opto-coupler PC3, first opto-coupler PC1, second opto-coupler PC2 and third opto-coupler PC3 connect in parallel each other after with the MCU decoding unit electricity is connected.

Optionally, the optical coupling unit is further connected with an optical coupling protection module, and the optical coupling protection module is composed of a plurality of diodes.

Optionally, the optical coupler parts of the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3 are further connected with a pull-down resistor.

The utility model discloses a novel motor speed governing circuit, its beneficial effect is: through switch module and mainboard module and cooperation, switch module is direct to be connected with the live wire in the electric wire netting, and also be the lug connection switch module, when live wire is supplied power to switch module and mainboard module, still undertake the function of communication between the two, be connected to the mainboard through the power cord, it forms not equidirectional electric current to set up a plurality of gears on switch module, then decode to MCU decoding unit by opto-coupler unit conversion signal, realize many gears speed governing with gear signal transmission to motor drive unit driving motor at last, whole process need not too much peripheral circuit cooperation, save the communication line setting that is used for the communication specially, and the device is few, and is with low costs, simple to operate, high reliability, effectively solve exist not enough in the background art.

Drawings

FIG. 1 is a circuit schematic diagram of a novel motor speed regulation circuit;

fig. 2 is a circuit schematic of the switch module.

Detailed Description

The novel motor speed regulation circuit of the utility model is explained with the attached drawings.

As shown in fig. 1-2, as a preferred embodiment of the present invention:

the utility model provides a novel 5 speed governing circuits of motor, includes switch module 1 and mainboard module 2, switch module 1 includes gear switch K1, mainboard module 2 is last to include opto-coupler unit, MCU decoding unit 3 and motor drive unit 4, the opto-coupler unit with 1 electricity of switch module is connected, the opto-coupler unit with 3 electricity of MCU decoding unit are connected, MCU decoding unit 3 is arranged in the different current change in the identification circuit, MCU decoding unit 3 with 4 electricity of motor drive unit are connected, motor drive unit 4 is used for the drive 5 work of motor.

Gear switch K1 has five gears, is first gear, second gear, third gear, fourth gear and fifth gear respectively, first gear electricity is connected with diode D1, second gear electricity is connected with diode D2, third gear electricity is connected with diode D3, still parallelly connected has first resistance on the diode D3, fourth gear electricity is connected with diode D4, still parallelly connected has the second resistance on the diode D4, then the opto-coupler unit includes first opto-coupler PC1, second opto-coupler PC2 and third opto-coupler PC3, first opto-coupler PC1, second opto-coupler PC2 and third opto-coupler PC3 parallelly connected back each other with MCU decoding unit 3 electricity is connected, through the cooperation between opto-coupler unit and a plurality of diodes, forms different current forms, is discerned by MCU decoding unit 3 and decodes to control motor drive unit 4 driving motor 5 produces different speeds, thereby realizes the speed governing.

The first resistor is formed by connecting a resistor R1 and a resistor R2 in series, and the second resistor is formed by connecting a resistor R3 and a resistor R4 in series.

The speed regulation principle of the five gears is as follows:

in the first gear, after the upper end point 7 and the end point 3 of the gear switch K1 are conducted, current passes through the diode D1, the positive half cycle Zhou Dianliu is adopted, and then the current flows into the MCU decoding unit 3 through the second optical coupler PC2, so that the wind speed which is the first gear at the moment is identified, and the motor driving unit 4 is controlled to drive the motor 5 to generate the corresponding speed;

in the second gear, after the upper end point 7 and the end point 6 of the gear switch K1 are conducted, the current adopts negative half-cycle current through the diode D2 and then flows into the MCU decoding unit 3 through the first optocoupler PC1, so that the wind speed which is the second gear at the moment is identified, and the motor driving unit 4 is controlled to drive the motor 5 to generate corresponding speed;

in the third gear, after the upper end point 7 and the end point 5 of the gear switch K1 are conducted, the current passes through the diode D3 and the first resistor which are connected in parallel, then the current adopts positive half-cycle current, and then the current flows into the MCU decoding unit 3 after passing through the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3, so that the wind speed of the third gear is identified at the moment, and the motor driving unit 4 is controlled to drive the motor 5 to generate corresponding speed;

in the fourth gear, after an upper end point 7 and an end point 4 of a gear switch K1 are conducted, the current passes through a diode D4 and a second resistor and then adopts negative half-cycle current, then flows into an MCU decoding unit 3 after passing through a first optical coupler PC1, a second optical coupler PC2 and a third optical coupler PC3, so that the wind speed of the fourth gear is recognized, and the motor driving unit 4 is controlled to drive a motor 5 to generate corresponding speed;

in the fifth gear, after the end point 7 and the end point 2 of the gear switch K1 are conducted, current directly flows into the MCU decoding unit 3 after passing through the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3, so that the wind speed of the fifth gear is recognized, and the motor driving unit 4 is controlled to drive the motor 5 to generate the corresponding speed.

In order to protect the structural integrity of each optical coupler and improve the stability during working, the optical coupler unit is also connected with an optical coupler protection module, the optical coupler protection module consists of a plurality of diodes, and the plurality of diodes can be formed in a mode of series connection or parallel connection or combination of series connection and parallel connection.

Preferably, the optical coupling protection module comprises a diode D5, a diode D6, a diode D7, a diode D8 and a diode D9, wherein the diode D6 and the diode D8 are connected with each other and then are connected with the diode D5 after being connected with each other in parallel with the diode D7 and the diode D9 connected with each other, so as to form the optical coupling protection module.

Preferably, the optical coupler parts of the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3 are further connected with a pull-down resistor.

The utility model discloses a novel 5 speed governing circuits of motor, its beneficial effect is: through switch module 1 and mainboard module 2 and cooperation, switch module 1 is direct to be connected with the live wire in the electric wire netting, and also be direct connection switch module 1, when the live wire is supplied power to switch module 1 and mainboard module 2, still undertake the function of communication between the two, be connected to the mainboard through the power cord, set up a plurality of gears and form not equidirectional electric current on switch module 1, then decode to MCU decoding unit 3 by opto-coupler unit conversion signal, realize many gears speed governing with gear signal transmission to motor drive unit 4 driving motor 5 at last, whole process need not too much peripheral circuit cooperation, save the communication line setting that is used for the communication specially, and the device is few, and is with low costs, and convenient for installation, high reliability, effectively solve the not enough that exists in the background art.

Variations and modifications to the above-described embodiments may occur to those skilled in the art based upon the disclosure and teachings of the above specification. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A novel motor speed regulation circuit is characterized by comprising a switch module and a mainboard module, wherein the switch module comprises a gear switch K1, the mainboard module comprises an optical coupling unit, an MCU (microprogrammed control unit) decoding unit and a motor driving unit, the optical coupling unit is electrically connected with the switch module, the optical coupling unit is electrically connected with the MCU decoding unit, the MCU decoding unit is used for identifying different current changes in the circuit, the MCU decoding unit is electrically connected with the motor driving unit, and the motor driving unit is used for driving a motor to work;

one end of the switch module is connected with a live wire supplied by a power grid, the other end of the switch module is connected with the mainboard module, and the other end of the mainboard module is connected with a zero line supplied by the power grid.

2. The novel motor speed regulation circuit of claim 1, wherein the gear switch K1 is provided with a plurality of gears, and at least 1 gear is connected with a diode.

3. The novel motor speed regulation circuit according to claim 2, wherein 5 gears are arranged on the gear switch K1, and are respectively a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the first gear is electrically connected with a diode D1, the second gear is electrically connected with a diode D2, the third gear is electrically connected with a diode D3, the diode D3 is further connected with a first resistor in parallel, the fourth gear is electrically connected with a diode D4, the diode D4 is further connected with a second resistor in parallel, and the fifth gear is electrically connected with the motherboard module.

4. The novel motor speed regulation circuit of claim 1, wherein the optical coupler unit comprises a first optical coupler PC1, a second optical coupler PC2 and a third optical coupler PC3, and the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3 are electrically connected with the MCU decoding unit after being connected in parallel.

5. The novel motor speed regulation circuit of claim 1, wherein the optical coupling unit is further connected with an optical coupling protection module, and the optical coupling protection module comprises a plurality of diodes.

6. The novel motor speed regulation circuit of claim 4, wherein the optical coupler parts of the first optical coupler PC1, the second optical coupler PC2 and the third optical coupler PC3 are further connected with a pull-down resistor.