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The electric rolling doors are extensively used in Taiwan; however, the accidents of personal injuries caused by electric rolling doors frequently occur. The doors have caused injuries, and even casualties in worst cases. Based on TRIZ contradiction matrix and inventive principles, this study used a laser module, a photoresistor receiver, and mirror reflected refraction to construct a low-cost safety control circuit device. This safety control circuit device can be used for electric rolling doors (3m high and 8m wide) that are commonly used for residential houses. When the electric rolling door is in operation, any objects of the height over 10cm entering or existing in the range of the electric rolling door can be detected by the control device. The actuation of the electric rolling door is then stopped, and an alarm gives out warning sound, so that possible injuries may be prevented. The material cost of this control device is below 2,000 NTD, and this design is cost-effective.

With rising attention to the quality of AC/DC, DC/DC power supply, in response to the verification of design and production of power supply, and to ensure the quality demand of power supply, power supply automatic testing system is thus developed. Power supply testing systems with features of higher accuracy, lower cost and shorter testing time should be designed to guarantee the quality of power supply to win high level of customer trust. This testing system uses Labview software to establish an open platform with built-in testing program editors of considerable freedom and convenience to allow engineers to rapidly edit testing programs for various projects and design various customized testing items. This study develops the unified instrument control interface for various testing demands of instruments and equipments made by different manufacturers. With software operating panel record functions, the system can record each testing step and furthermore edit. This study proposes the Test System Performance Index to facilitate customers to evaluate and compare the performance capabilities of various power supply testing systems. Higher Test System Performance Index indicates better performance of the testing systems. By comparison, the test system performance index of the testing system and Chroma 8000 are 3.36 and 0.164, respectively. This indicates that the testing system has definite advantages including more testing functional items, shorter testing time, low manufacturing cost, and supportability of various types of equipments, thus making it a system with great potentials.

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