Dasong Sun

The design and implementation of power earth-line monitoring system

This paper describes the power earth-line monitoring system for the planning, design and implementation process. The system operates based on B / S mode and includes three parts: intelligent ground monitor, remote observation points and monitoring center system. Ground state data of the power lines are collected by the monitor, and then the data are transmitted to monitoring platform through the GSM short message system (GSM SMS). System key data are MD5 encrypted to ensure security of the system. In the system, operating conditions of the database are saved in the form of log file; intelligent fuzzy queries are supported; the data can be backed up; and the recovery functions are complete.

The realization of gating management system of reading room

The paper introduces the design and the realization of the gating management system of reading room. It is a multi-user and multi-task system which based on Windows98/NT. It contains client and server. One Client is made up of a Reading-Card part and a PC, which communicate through Rs232 port. SQL Server2000 is used as the background database server.