ZigBee无线通信在电梯轿厢控制系统中的应用

为解决在电梯安装和检修过程中布线繁琐和故障排查困难等问题，将ZigBee无线通信技术应用到了电梯轿厢的控制系统中。开展了对电梯电路结构和轿厢通信原理的分析，建立了轿厢模块与电梯主控制器bp304之间的通信联接，提出了改进电路和优化通信程序的方法。在德国奔克bp304电梯控制系统平台上对采用STM32W108ZigBee射频芯片无线收发器的轿厢通信进行了评价，在分别安装ZigBee模块的轿厢控制器与电梯主控制器之间进行了无线通信实验。研究结果表明，轿厢与主控制器无线通信有效距离最远可达到140m，满足一般32层建筑的电梯轿厢通讯的有效距离；无线数据通信能保证所接收数据帧的正确性和完整性，确保轿厢控制器能与电梯主控制器建立稳定通信连接；无线的使用节约了整个轿厢控制系统的布线成本。

Application of ZigBee wireless communication technology in elevator car control system

In order to solve the problems of the complicated arrangement of wire in elevator installation and the long process of checking ele- vator for the elevator installed and repairers, the ZigBee wireless technology which was considered to be the communication mode between the lift car and the elevator control system was investigated. After the analysis of the circuit configuration of the elevator and the communication theory of the lift car, the communication connection between bp304 elevator controller and the car controller was established. A method was presented to improve the circuit of the elevator and optimize the communication program between bp304 elevator controller and the ear con- troller. The communication between elevator controller and the car controller was evaluated on the bp304 elevator control system, ZigBee wireless modules applying STM32W108 radio frequency chip which were used in the elevator communication were tested. The experimental re- sults show that the effective communication distance between the elevator controller and the car is about 140 m, that meets the distance re- quirement in a building with 32 floors, correctness and completeness of data frames are ensured by the wireless communication program, so the communication between elevator controller and the car controller can be connected stably, the cost for the arrangement of wire is saved.