| With the development of sensor technology and telecommunication technology, wireless sensor network has a widespread application in many aspects. WSN works in military monitoring, the earthquake and climatic prediction, deep water and the outer space exploration. Based on a wireless sensor network temperature gathering system, it is used to monitor residents' indoor heating condition for a long-distance, provide heating information for both heating supply department and management department, in order to make proper adjustment and aim to save manpower and energy.By analyzing the network environment of temperature information acquisition system, I designed a typical multi-level network model. This system is mainly divided into three levels:temperature gathering monitoring center which is constituted by a central computer and some monitoring software; main network constructed by prime data acquisition and sub-network constituted by route node and data acquisition node; cooperation to accomplish temperature data acquisition and monitoring.The temperature information acquisition system's overall design can be divided into three parts, including:wireless sensor network node, wireless sensor network telecommunication protocols, temperature data monitoring software. Hardware circuit design includes the module based on CC1101 wireless communication, DS1820 digit temperature sensor module, serial-communication module, power supply module and hardware address allocation module. The software design includes route protocol design, network communication data frames form design, Ethernet communication protocol design, sensor node low power loss design, serial-communication data frames form design, software design of major function module, software design of various nodes in the network and software design for monitoring.Through texting and confirming the whole system, especially the hardware circuit of the sensor module and the wireless transmit and receive module, the temperature information acquisition system designed in this article accomplishes gathering temperature information of the sensor node, proves the reasonability of the route protocols, arrives at the anticipated objective, and provides references for the further application of wireless sensor network in temperature gathering. |
