当检测到病员呼叫时，控制器指示灯常亮并发出报警声。
Controller's indicator is normal on and send out alarm signal when detecting patient on sickbed calling.
系统试运行表明，该系统能自动检测隧道内的故障停车并发出报警信号。
Experiments and trial operation show that the system can automatically detect the trouble parking in tunnel and give an alarm.
当物流运输装置在前进时遇到障碍时，则采用图像和光电传感器双重识别，使运输装置自动停止，并发出报警信号。
When the device meet the obstacle while moving forward, it can stop and alarm automatically through the image and optical electrical sensors which perform dual identify.
当物流运输装置在前进时遇到障碍时，则采用图像和光电传感器双重识别，使运输装置自动停止，并发出报警信号。
When the device meet the obstacle while moving forward, it can stop and alarm automatically through the image and optical electrical sensors which perform dual identify.
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