广播式自动打铃控制器设计

Design of Automatic Bell Controller

为了解决电铃手动控制打铃可靠性差、噪声多及布线问题,设计了一种以AT89C51单片机为核心,以7段数码管显示年、月、日、时、分和星期,时钟芯片DS12887计时并校时的无线电铃控制器。单片机根据时钟信号及事先编好的打铃表来控制发射端编码芯片PT2262发射信号,据此相应的接收端解码芯片PT2272接收信号,控制电铃工作。

In order to solve the problems in manualbell such as poor reliability, large noise, this paper introduced the design of a wireless bell controller based on AT89C51, with seven segment digital tube displaying year, month, day, hour, minute, and week, in which a clock chip code DS12887 is applied to time counting and correcting time. According to pre-programm, the MCU control the chips PT2262 to emit signal, and the corresponding receiver decoder chip PT2272 received signal and control the electric bell to work.