Design And Research Of Elevator Remote Monitoring System Based On GPRS

With the development of society,as the most in common use perpendicular conveyance tool of the modern the key figures construct,the elevator already has been applied to the each comer of the social activity extensively.But the amount of large quantity apply,how guarantee that each set elevators can run dependently,have become the key that raise estate management level and our country's progressive of the elevator technology.The function of the monitoring system lies on directly the movement.But as the computer control technique and network communications technique are developing.The function of the monitoring system is rising continuously.The current elevator long range supervision system are all designed and provided by the elevator produced factory,the future development trend is to develop a supervision system which the function is more perfect,general use is stronger,function price compares is higher.With the development of the long-range transmission technology of the data, wireless communication is adopted extensively and gradually,among them the data business of grouping based on GPRS network has got the extensive application.In this thesis,we integrate advanced technologies such as mobile communication, Internet,embedded technologies to realize multi-point control based on mobile platform.Provide a cheap,reliable solution.This text discusses structure and work principle of the GPRS network first, and integrates Internet technology,putting forward five kinds of different net framework.Putting forward total structure of elevator remote monitoring system based on GPRS according to the actual circumstance.Secondly,this thesis studies the function request of the terminal hardly,and gives reasonable programming design.Analyzing that single SCM C8051 F020 is applied,and the hardware which chooses to use the correspondence mold piece of the ME99 GPRS DTU as core designed,carrying out each function mold piece in hardware system.The point is that studying the function of GPRS mold piece, carrying out IP mold piece and the related constitution of the GPRS mold piece with the AT instruction.Carrying out short news to receive and send,completing function that a GPRS module to stir number to get to the Internet,build up conjunction,send out a data etc.And through the analysis the transport protocols of GPRS network, according to monitoring terminal,design the data collection terminal application, analyzing concrete work process of the terminal,carrying out the appearance data collection of the elevator movement and the communication of the terminal and supervision center.At last,the text based Visual C++ language and the object-oriented programming thought,the software design of Internet based remote elevator monitoring system is completed.System includes permission module,real-time monitoring module,data maintenance of the elevator and the object of fault record. The failure and the running state of elevators showed automatically.The user information,the running state of elevators,solution of failure and maintenance information are managed by database.The last of article has prospected development of the remote elevator.