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A design scheme of coal mine safety monitoring system is proposed in this study, which combines wireless sensor networks as a representative of wireless technology and CAN bus technology represented by wired communication technology. It presents a design method of software system and hardware system. This system conquers the defect of wired networks, improving the security and stability of data transmission and meets the design requirements of Coal mine safety monitoring system, which contain low-cost, low power, low complexity. So, this system has certain feasibility.

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