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.
Nowadays, emergency lights are widely used in public places around the world. For safety consideration, their working conditions must be checked and reported regularly. However, usually the checking is done by humans, which poses difficulty in completing a standard process in a real situation. In this paper, we report the development of a small-sized wireless apparatus for collecting the checking results from an automatic self-checking emergency light. The proposed two-way communication integrates wireless modules with infrared ray and microprocessors (PIC18F4520) between the handset and the emergency lights. The checked results are burned into the microprocessor-based detector in the emergency light. Also, a calendar is installed in the emergency light so that it can be uploaded and adjusted by the microprocessor-based data processor. Consequently, the checking mechanism can be operated at prescheduled times automatically, and the checked outcomes can be retrieved and displayed any time from the handset. Experimental results confirm that the proposed device is superior to other systems in terms of simplicity, cost, and reliability.
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