With the rapidly developing of the embedded and wireless communication technology, data terminals that depend on the wireless data transmission network and based on the platform of embedded systems, have been more widely used. Remote Data collection also has been developed to use wireless communications network to achieve real-time data transmission. The paper makes the
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Working conditions in underground coal mine are dreadful, resulting in frequent accidents, which have been hindering the rapid development of China’s coal industry. Therefore, to reduce casualties and economic loss caused by coal mine accident, it is an urgent need to develop an emergency communication system used in coal mine.However, communication conditions are dreadful. The
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