Application Of GPRS In Elevator Monitor System Communications

Elevator is the hi-tech product, Nowadays, The elevator made in china has come into the front of the world, but accidents often occur during elevator run, The focus reflects on the security, One the one hand, the improvement of security through improving on design, advancing making, fixing quality. One the other hand, depend on perfect maintaining system and advanced watching measure. Presently, the improvement of elevator tech has turnaround service, American, Japanese, European elevator companies use modern communication measure and PC technique, develop their own elevator remote monitor system. Elevators need maintain in the monitor network. When trouble appeared, the trouble is found in the first time, and messaged to monitor centre, at the same time, immediately calling service people remove failure. Since the reform and opening, the amount of using elevators is rapid increasing, elevators reach 330 thousand, ensuring elevators run safely has become the key of elevator tech. so developing elevator remote monitor, management and failure diagnose is very necessary.In this paper, author put forward an elevator monitor solving project based on wireless GPRS network, realized elevator wireless monitor terminal integrated with GPRS model, in this paper, author complete some work as below:First, research and discuss GPRS technique, including data transmission key problem of GPRS network, some using protocol of GPRS network.Second, research communication protocol design based on M2M plat, realized communication between terminal and elevator management system plat.Third, researching hardware development flat LPC2131 of the system, focus on researching serial port, timer, flash hardware resource.Fourth, research software programming based on ADS1.2, focus on researching serial port, timer, flash floor driver design.Fifth, research internet applications design pointed to protocol, focus on software design based on WMMP and WEMP protocol.