基于AT89S 8253的多时段载波表设计

Design of time-division charge meter based on AT89S 8253

根据分时计费以及远程电量采集的需要,设计了一种基于AT89S 8253的多时段远程抄表系统终端。系统利用RX 8025提供的精准时钟,当定时时间到达设定值时,RX 8025产生中断,AT89S 8253调用分时段处理程序作相应处理。终端通过电力线通信,可以接受来自上位机的指令并返回相应的数据。同时设计了一套中继通信协议,使终端具有中继功能。采用AT89S 8253使数据保存更加迅速、可靠,每间隔1 h作一次通、断电,经200 h测试,没有发生电能数据丢失情况。试验表明,系统运行稳定、可靠,具有较强的抗干扰能力。

A power meter based on AT89S 8253 is designed to meet the demand of time- division charge and remote reading. The meter uses RX 8025 as its clock,when the set time arrives,an interrupt is generated and the time-division processing program is called by AT89S8253. The meter receives commands and sends corresponding data via power line. A set of relay protocol is designed for relay function. The application of AT 89S 8253 makes the data conservation more quick and reliable. Electricity switching on or off is performed every other hour and lasted 200 hours ,no data is lost. Test shows that the meter is stable and reliable,with enhanced anti-jamming capability.