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1引言目前用于灯光控制的设备中,控制系统只负责发送控制指令,但是对于设备对指令的执行情况不得而知。在实际应用过程中,常常会出现控制命令已经发出,而灯光设备并没执行的情况,系统并不能确认控制命令是否执行,这种单向工作原理会影响机房正常运转,根本达不到正常灯控系统的控制要求,并且日常维护难度大,耗费大量人力物力。若在系统中加入反馈电路(与控制器集成在一起),即把前端设备的状态返回控制设备,再经上位机分析对比,当设备未执行指令或控制系统出现故障时,可以通过环境监控系统报警。因此,需要开发一种双向工作原
1 Introduction Currently used for lighting control equipment, the control system is only responsible for sending control instructions, but the implementation of the directive for the device is unknown. In practice, control commands have often been issued, and the lighting equipment is not implemented. The system can not confirm whether the control commands are executed. Such one-way working principle will affect the normal operation of the equipment room and fail to reach the normal light Control system control requirements, and the difficulty of routine maintenance, consuming a lot of manpower and resources. If the system to join the feedback circuit (integrated with the controller), that is, the status of the front-end equipment back to the control equipment, and then by PC analysis and comparison, when the device is not executing instructions or control system failure, through the Environmental Monitoring System Call the police. Therefore, it is necessary to develop a two-way working principle