Switching Technology, Based On The Number Of Electric Power Communication Network Telemetry System

This paper introduces the digital auto exchange technique of electric power pool carrier wave communication equipment and its application in remote measuring & remote controlled operation.Firstly, introducing the principle of the digital exchange, the principle of pulse coded modulation communication, the kinds of interface and its functions, the principle of digital subscriber line interface circuit and 4W+E/M trunk line interface circuit. By bringing in the 4W+E/M trunk line interface circuit, making it easy to join to the auto exchange network of the electric power pool dispatch. Then designing the hardware construction of the auto exchange system of electric power pool carrier wave communication equipment, the circuit of analog subscriber line interface, the receiver circuit of signaling and the construction of auto subscriber line interface. Discuss the method of digital auto exchange. At last it studys the software construction of the digital auto exchange system of electric power pool carrier wave communication equipment and its accomplishing methods.According to experiment, the system is proved to be competent and have high practical value.