Development of Wireless Automatic Checking Handset for Wide-Distributed Emergency Lights

Emergency lighting facilities are widely installed in public areas such as school, hospital, and station. According the fire regulation in most of countries around the world, such facilities must be installed and checked regularly to ensure their normal working condition. Usually, they are suspended from a high place and distributed widely in the building. Presently, the checking responsibility depends on human operation only, taking at least 30 min for each device. This problem does pose most difficulty to fully meet the required checking rules. Therefore, the proposed scheme develops a portable emergency light checking handset based on wireless transmission/receiving modules integrated with the infrared (IR) ray. The checking command can be transmitted in straight one-way direction, and the checked results can be received at once within 6–10 m. Moreover, the automatic checking mechanism is activated in a prescheduled time. Experimental results reveal that the proposed algorithm can not only control the checking schedule but also read the checked results within the range of 6–10 m instantly. The checking duty relying on the human operation is thus reduced significantly.