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The technological innovation in electronics makes nowadays mobile phone more than a simple communication tool: it becomes a portable electronic device with integrated functions, such as listening to music, watching movies, taking photos, etc. To achieve these, many kinds of advanced sensor are used. In this paper, several applications of sensor in smart phone are introduced including Image Sensor, Fingerprint Identification Sensor, Photo-electric Sensor, Acceleration Sensor, etc. The trend of the mobile phone, 3I (Intellignet, Interaction and Internet), will have all kinds of sensor more and more popular in mobile phones to change our life.

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Abstract. Applying GPS positioning and navigation technology to power systems，will realize precise navigation of power equipments, improve power system automation of routine works, and enhance working efficiency. In case of emergency, rapid fixing arrangements can be implemented through monitoring and command platform. With advance communication technology, the realtime video can be transferred to the experts all over the world for remote joint consultation.