无线测温节点设计毕业设计说明书.doc

河南科技大学2013届毕业设计说明书 毕业设计说明书 无线测温节点设计 无线测温节点设计 摘要 针对目前我国一些粮食，煤炭等储备产业检测系统存在的不足，提出了一种无线传感器网络的设计方案，详细介绍了无线温度传感器的硬件结构和软件设计。 传统的温度测量，都是从传感器引出线缆到达显示面板或主机才能测量温度的变化。对于一些腐蚀性强或密封性高，温度测量与主机距离远的环境，有线温度测量实现起来就比较困难。虽然随着技术的发展，温度变送器的出现解决了短距离温度的测量，但其仍然依赖于线缆。而且随着距离的增加．信号衰减很快。无法适用于远距离温度测量。 温度指标在许多工程程项目中是不可或缺的重要参数，针对这一要求提出的无线温度测量系统．采用数字式温度传感器DSl8B20作为测温节点。89C52单片机作为下位机微处理器来控制温度值的采集，并通过无线收发模块NRF905进行传输，最后通过串口将数据传送到上位机显示芯片。实验证明，该系统解决了在复杂环境下温度采集和获取的问题，具有较高的精度和很好的推广应用前景。 关键词：温度测量，无线通信，DS18B20 Wirelesstemperature measurement system design Abstract Aiming at some of Chinas grain and coal reserves of the shortcomings of industrial inspection system,A wireless sensor network design, details of the wireless temperature sensor node hardware architecture and software design. from the sensor cable to the display panel or the host can measure the temperature changes. For some corrosion or sealing of high temperature measurement and the host environment for distance, cable temperature measurement is more difficult to achieve together. Although with the technology, the emergence of solution temperature transmitter temperature measurement of short distances, but still rely on cable. And as the distance increases. Signals are attenuated. Can not be applied to remote temperature measurements. Temperature indicator process in many engineering projects is an indispensable parameter for this request wireless temperature measurement system. With digital temperature sensor DSl8B20 as temperature node. 89C52 microcontroller as a slave microprocessor to control under the multi-temperature value of the collection, and through the wireless transceiver module NRF905 for transmission, and finally through the serial port to transfer data to PC graphics chips. Experiments show that the system solves the temperature in a complex environment, collection and access problems, high accuracy and good application prospects. Key words: temperature measurement, wireless communication, DS18B20 目录 TOC \o 1-3 \h \z \u HYPERLIN