1、 基于 51 单片机的数显节水型水表的设计 摘要：摘要： 本设计是基于 51 单片机的一种数显节水型水表。该水表是采用霍尔传 感器采集水流信号,通过对现有水表的改进,并结合电子传感技术， 设计出一种体 积小,重量轻,全数显的节水型水表。该数显水表的叶轮处安装上小磁柱,水表外 壳上装有霍尔元件 AH44E， 霍尔元件接收到的信号被传入单片机， 信号通过处理， 传送到显示板上，显示板上分别带有可显示瞬时流量、累计流量的视窗、报警灯 和报警器，显示板上盖有透明密封板。本设计有如下的优点：一、准确反应瞬时 流量和累计流量,读数准确,使用效果好； 二、 能够在超过用户设定值时提醒用户， 起到了时时提醒用
2、户节水的目的。 关键字：数显，霍尔传感器，小磁柱，显示板，报警 The design of digital showed water-meter based on 51 Microcontroller Abstract: This design is a saving meter which based on a digital display 51 microcontroller. The water meter is collected using Hall sensor signal flow through the improvement of the existing water m
3、eter, combined with electronic sensing technology,Design a small size, light weight, all figures show the water-meter. The figures show that the impeller to install water meters on the small cylinder. The water meter is equipped with a Hall element AH44E shell. Hall element received signal is passed
4、 to SCM. The signal is processed, sent to the display board. Display board can be displayed with the instantaneous flow, respectively, the cumulative flow window, alarm lights and alarm, the display board covered with a transparent sealing plate. This design has the following advantages: 1, accurately reflect the instantaneous flow and total flow rate, reading accuracy, and efficiency is good; 2, the user can set the value in more than remind the user, playing the purpose of saving time to tim
