Single-chip microcomputer brushless direct-current motor rotor position detecting protector

Abstract

The invention discloses a single-chip microcomputer brushless direct-current motor rotor position detecting protector. The protector includes an ATMEGA64 single-chip microcomputer, a 5V direct-current power source, an RS485 communication interface circuit, a data storage unit, a power driving module and a plurality of sensor assemblies; the input ends of the ATMEGA64 single-chip microcomputer are connected with a temperature sensor, a current sampling circuit and a key reset circuit; the output ends of the ATMEGA64 single-chip microcomputer are connected with a liquid crystal display circuit; each sensor assembly includes a first Hall sensor module, a first optocoupler isolation circuit, a second Hall sensor module, a second optocoupler isolation circuit, a third sensor Hall module and a third optocoupler isolation circuit which are uniformly distributed around a rotor; and the power driving module includes a fourth optocoupler isolation circuit, a power driving circuit and an over current protection circuit. The single-chip microcomputer brushless direct-current motor rotor position detecting protector of the invention has rotor position, temperature detection and current information detection functions. The single-chip microcomputer brushless direct-current motor rotor position detecting protector has the advantages of complete functions and high practicability.

Description

technical field [0001] The invention belongs to the technical field of brushless direct current motor protection, in particular to a brushless direct current motor rotor position detection protector based on a single chip microcomputer. Background technique [0002] With the advancement of modern science and technology, the electronic industry is changing with each passing day, and it is updating and changing every moment. Brushless DC motors play an important role in life and industrial systems due to their many advantages such as no friction, low interference, long life, low maintenance cost and high efficiency. Important roles, such as treadmills, winding machines and military centrifuges, etc., in such a high-tech society, inevitably have high requirements for the control accuracy of products, so that we can better realize the functions we need , the control accuracy is getting higher and higher, and the control of brushless DC motors is extremely important, accurate to ...

AI Technical Summary

Problems solved by technology

[0002] With the advancement of modern science and technology, the electronic industry is changing with each passing day, and it is updating and changing every moment. Brushless DC motors play an important role in life and industrial systems due to their many advantages such as no friction, low interference, long life, low maintenance cost and high efficiency. Important roles, such as treadmills, winding machines and military centrifuges, etc., in such a high-tech society, inevitably have high requirements for the control accuracy of the products, so that we can better realize the functions we need , the control accuracy is getting higher and higher, and the control of brushless DC motors is extremely important, accurate to every circle and every degree of motor rotor movement. Nowadays, brushless DC motors are more and more widely used, and the market There is a lack of a brushless DC motor controller that can accurately control the movement of the motor rotor, and because the motor movement current is an alternating current, there is a lack of a brushless DC motor controller with a current protection device, which can be controlled by the Hall position sensor The rotation position signal of the motor rotor is transmitted to the single-chip microcomputer for processing, and the single-chip microcomputer sends it to the external memory to save the data. Once the power is turned off, the memory can accurately know the current running angle and current of the brushless DC motor, and the control accuracy is further improved. Therefore, it is necessary to design a brushless DC motor controller

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