The greenhouse roller shutter machines available mostly are pointing controlled through motor, existing the security problems like easy falling of heat-preserving curtain rolled up. This paper presents a kind of multi-channel priority control device for greenhouse roller shutter machine, achiving the multi-channel control which contains limit control, manual control, remote control and program control for roller shutter machine. The device could improved using safety while the system was controlled more accurately and intelligently.
展开▼
