Design and Implement of Information Model and Communication Protocol for Monitoring of Power Supply

Information model and communication protocol have been studied for monitoring of power supply. The basic unit of monitoring information is a monitored object. A monitored object has 6 attributes. We have designed the Monitoring Information Library, abbreviated to MIL, to organize and store monitored objects. MIL takes a tree-like shape. Each branch represents a group of monitored objects. And each leaf represents one monitored object. We devise a proprietary protocol, termed as PSRMP. PSRMP Protocol admits a frame format with variable block length. The frame consists of nine fields. The field of application service data unit may admits an object-binding format. An object-binding can include multiple objects. Each object contains a pair of object identification and its value. We use ASN.1 (Abstract Syntax Notation One) to represent object-bindings. TLV (Type, Length, and Value) approach is adopted to encode message for transmission. We use Intel486 as the processor of our ERTUs. The MIL and PSRMP are implemented in C language. We have developed a program for MIL and PSRMP. This program takes a memory space of about 900 bytes.