Abstract
this article is to use AT89C51 single-chip microcomputer control of intelligent speed measuring instrument. Motor in the process of operation, need to be monitored, speed is a necessary one parameter. This system is carried out on the motor speed measurement, and can be conducted and PC communication, shows that the speed of the motor, and observe the basic condition of the motor running. Mainly USES AT89C51 as the control core, by hall sensors, LED digital tube, the NE555, L298N, operational amplifiers, etc. SCM measuring speed system was introduced in detail. Give full play to the performance of the single chip microcomputer. The focus is on measuring speed and display. Its advantage is hardware circuit is simple, software function is perfect, measuring speed, high precision, reliable control system, the characteristics of high performance-to-price ratio.
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