Design And Implementation Of Lightning Protection Device Monitoring System Based On Serial Communication

200 years ago. Franklin invented after the lightning, building facilities such as already got certain protection. At present, whether buildings or structures within the electronic equipments were taking certain corona measures, but in lightning arrester degradation, grounding resistance big. still can't protect buildings, and electrical equipment.Lightning protection device remote monitoring system is mainly used for monitoring building lightning proof device operation state, grounding resistance, lightning times. When lightning arrester degradation or grounding resistance overrun, alarm information. Meanwhile, through the lightning arrester surge of occurrence and lightning times through serial communication modes report to the monitoring center, the monitoring center for information on unified management, and adopt corresponding measures.Lightning protection device remote monitoring system structure mainly includes client systems and monitoring center.Client system is composed of lightning protection device and alarm SCM system. Client-side system is responsible for lightning protection device of monitoring, if found on lightning protection equipment degradation, leakage current big, grounding resistance off-gauge etc. alarm SCM system produce alarm information, through telephone wires through public telephone network remote monitoring center, transferred by monitoring center accept, store, process. Lightning protection equipment monitoring system can manage multiple user, and each user have multiple lightning protection equipment to be monitor.Monitoring center is driven by SG-SLR single-line machine is responsible for receiving alarm information. SG-SLR single-line machine connected at one end public telephone network, receive client to alarm information. The other end of the SG-SLR single-lane machine adopt RS232 interface and monitor center of computer system USES asynchronous serial communication modes of communication. Alarm information displayed on the monitor center of computer system to list mode, map way or panel displays.Lightning protection device remote monitoring system of general structure according to the function is divided into five modules:alarm system, receiving information, monitoring information display, information query, communication protocols. Alarm system:be responsible for monitoring and lightning protection device, happen lightning arrester degradation or grounding resistance overrun, can take alarm information.Receiving information:through single-line machine will alarm system to provide the alarm information receive down and alarm messages should include user Numbers, and lightning protection device information and alarm where necessary information.Monitoring information display:can realize docking received alarm information process and display, showing the way adopts map markers showed, list and alarm panels show. Processed data can be entered into the database, to prepare for future inquiry.Information query:to user material, alarm material in accordance with conditions query. The user data and information form display on the information query area.Communication protocol:in order to complete the remote communication, for clients and monitoring centers must according to the predetermined communication protocol to communicate. For clients and monitoring center adopt public telephone network mode, the monitoring center single-lane machine someone and telephone network, connected to one end and monitoring center of the computer system is linked together, single-line machine and computers used the asynchronous serial communication protocol and single-line machine defined agreement.This system is developed the Visual Basic 6.0 development platform. Microsoft Access database. MSComm communication control to finish. The remote communication using asynchronous serial communication protocol, the upper adopt self development communication protocol standards.