电能信息采集中数据通信部分的实现

Realization of Data Communication in Electric Energy Information Collection

通过对终端数据传输原理、利用AT指令拨号到GPRS网络、终端与前置通信单元的通信的分析,描述了数据从终端到主站的整个传输过程,并且针对传统模块无法实现与主机双向通信的弊端,提出了一种使通讯前置机可以主动发起连接请求的方法,经试验此方法能够达到预期的效果。

The paper analyzes terminal data transmission principle, and communication between terminal and preceding communicating cell as well as using AT instruction dial -up to GPRS, thus illustrates the whole transmission process of data from terminal to master. Besides the paper proposes a method of inducing the communication preceding computer emmitting connection request automatically aiming at the disadvantage of the traditional module can ＇ t realize bi -directional commmunication of host computer, and it can obtain the prospective effect through test.