The CAN bus 李强.

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1 The CAN bus 李强

2 Do you know what is CAN bus ？
The CAN is a serial communication protocol, it has many advantages, such as wiring simple, typical bus-control structure, saving wiring and maintenance cost, stability and reliable, real-time, strong anti-jamming capability and long distance transmission so on CAN是一种串行通信协议，它具有很多优点，布线简单，典型的总线型结构，节约布线和维护成本，稳定和可靠，实时，抗干扰能力强，传输距离远等

3 With the development of science and technology, information acquisition became an important process of the industrial control, CAN bus has also become a hotspot of research. The can bus with its outstanding advantages become the most loved field bus by re-searchers, it adopts differential signal transmission, normally , It could communicate stably and reliably with only two signal lines (CAN_H and CAN_L). 随着科技的发展，信息采集成了工业控制的一个重要出发点，现场总线也逐渐成为研究热点。CAN总线以其突出的优势成为最受研究者喜爱的现场总线之一，它采用差分信号传输，通常情况下只需要两根信号线（CAN_H 和CAN_L）就可以进行稳定、可靠的通信了。

4 FarEasTone water meter system which based on CAN bus
This is the frame of the system

5 The smallest system module

6 Water meter acquisition module

7 The CAN communication module

8 The display module

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