关键词:单片机;精确计时;继电器;电路
The Design and Implementation of a Power Switch Control Procedure Based on a Precise Time Control of MCU
Abstract
Precise time control is widely applied in the industrial control, and some other areas of our daily life at present. This design utilizes the MCS-51 microcontroller as the core components, and some external peripheral circuits. The microcontroller has been designed based on the precise time control hardware system, and contacted the controlled device with a Relay. It can be achieved that relatively small current could control a larger current. The software is designed based on the hardware system to implement precise delay, and four LED digital tubes each of which has seven sections are used to display time information. The LED equipment is programmed by dynamic scanning and uses the 74LS14 IC chip as the driver. The system is developed in the assemble language; the procedure is programmed with the SLISP software and is concerned with the timing function of MCU and the use of interrupt.
Key words: MCU;precise time control;Relay ;circuit