摘要
介绍了Dallas公司的iButton信息纽扣DS1991的特点、工作原理、及读写方法及DS1991在预付费水表中的应用,通过软硬件优化设计,设计了一个低功耗、高可靠性的机电一体化TM卡预付费水表。
This paper introduces iButton DS1991 made by Dallas company,including its characters,working principle and writing/ reading interface,and propose that it maybe applied to prepayment watermeters.This paper design a low power and high reliable prepayment watermeters based on TM cards by software and hardware cooperations.
出处
《工业控制计算机》
2005年第9期56-57,共2页
Industrial Control Computer
