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介绍一种智能电表系统组成及工作原理。该系统由单片机构成,利用AD7755进行A/D转换,把用户用电信息转换为数字脉冲;用AT89S52进行数据处理,把脉冲数转换为电量并送24LC16B存储;用MC74HC595A和共阴极数码管动态显示用户信息及电量。其主要特点为:结构简单、功能全面、抗干扰能力强,具有很强的实用性。
Introduces a smart meter system components and working principle. The system consists of single-chip, the use of AD7755 A / D conversion, the user electricity information is converted to digital pulse; with AT89S52 for data processing, the pulse number into electricity and send 24LC16B storage; with MC74HC595A and common cathode digital display dynamic display User information and electricity. Its main features are: simple structure, full-featured, anti-interference ability, with strong practicality.