基于CAN总线和射频技术的无线数据传输系统设计（毕业学术论文设计）.docVIP

PAGE 精品 河　南　科　技　学　院 2011届本科毕业论文（设计） 基于CAN总线和射频技术的无线数据传输系统设计 学生姓名： 所在学院： 信息工程 所学专业： 信息工程 导师姓名： 完成时间： 2010-5-25 基于CAN总线和射频技术的无线数据传输系统设计 摘要 变电站高压开关柜在电力系统中具有通、断电力线路,控制、保护系统等功能 ,但由于种种原因,大电流开关柜在运行中发热方面的故障率很高。测量和监视高压开关柜内接头的温度,是避免重大事故发生及控制故障恶化的重要手段。为方便、可靠、实时地对变电站高压开关柜内温度进行监测,研制了一种基于CAN总线及射频技术的温度监测系统。利用nRF2402及DS18B20作为无线温度传感器的主要器件实现开关柜内节点温度的采集、传输,以基于nRF2401射频芯片及独立CAN控制器芯片MCP2510的无线温度采集器完成对各温度传感器数据的接收及其与上位机的通讯,从而实现对高压开关柜内各节点温度的监测及报警。此系统在某110 kV变电站实际运行证明:系统抗干扰能力强、温度监测准确、可靠,满足高压开关柜温度监测要求。无线温度传感器功耗低、对开关柜内节点温度检测可靠、及时;温度采集器与上位机通讯实时性好、稳定。通过对系统的改进,也可应用在化工、工矿等其他需要进行温度监控的场合。 关键词:温度监测,射频,CAN总线,高压开关柜,单片机 Abstract Substation in power system high-voltage switchgear with communication, broken power lines and control and protection system, and other functions, but for a variety of reasons, large current switchgear in operation of high fever. Failure Measurement and monitoring high-voltage switchgear joints in temperature, is to avoid serious accident happened and control fault the important means of deterioration. For convenient, reliable and real-time temperature within high-voltage switchgear for substation monitoring, developed a CAN bus and rf technology based on the temperature monitoring system. Use nRF2402 and DS18B20 as a wireless temperature sensor nodes in the main device implements switchgear temperature collection, transmission, based on the nRF2401 rf chip and independent CAN MCP2510 wireless temperature controller chip for each temperature sensor unit complete data receiving and and superordination machine, so as to achieve the communication within the high-voltage switchgear each node temperature monitoring and alarming. This system in a 110 kV substations actual proof: system strong anti-jamming capability, temperature monitoring accurate, reliable, meeting the high-voltage switchgear temperature monitoring requirements. Wireless temperature sensor low-powe