Using the on off sensor that fixed on the load side line of electric equipment to control electric magnetic valve, then carry on remote control and realize automatic sprinkling of spray device.
利用固定在电气设备负荷侧线路上的开停传感器控制电磁阀开关，进行远距离控制，实现喷雾装置的自动洒水。
2
The conventional cylinder projection requires expensive device cost and is not suitable for dynamic video, against which we proposes an off-line cylinder projection image calibration scheme.
针对柱幕投影设备成本高且不适合视频实时播放的缺点，提出一种离线的柱幕投影图像校正方案。
3
A device used on a sand line in the tubing of an oil well to scrape the wax off the tubing.