基于无线传感器网络的抽油机远程参数检测系统毕业论文外文中英文翻译.doc

附录A Remote Monitoring System of Pumping Unit Based on Wireless Sensor Networks MeijuanGao, Jin Xu, and Jingwen Tian Department of Automatic Control, Beijing Union University School of Information Science, Beijing University of Chemical Technology Beijing, China I. INTRODUCTION As wireless communication technology continues to improve, it is an important development direction to implement the remote monitoring system of pumping unit using wireless networks. Now in this field the application is mainly GPRS wireless network, but the network base station is costly, with coverage blind spot, and oil exploitation is usually in the areas where the communication signals can’t cover, the paper introduces a remote monitoring system of pumping unit based on ZigBee [1]-[2]. ZigBee is a new wireless networking technology, it is a technical proposal between Bluetooth technology and the wireless marker, with low power, low cost and short time-delay characteristics. ZigBee is the set of specs built around the IEEE 802.15.4 wireless protocol, using ZigBee, devices in a network can communicate at speeds of up to 250 Kbps while physically separated by distances of up to 50 meters in typical circumstances and greater distances in an ideal environment. Based on ZigBee network communication technology and microprocessor technology, the system can deal with the various operating parameters of the remote transmission, real-time data collection and real-time load monitoring. The significance is: By monitoring the functioning of the pumping unit, when failure or abnormal operation take place, it can give an alarm quickly, reduce downtime and ensure oil pumps operate safely, provide a reliable guarantee for oilfield. II. SYSTEM DESIGN The main design thinking of the system is: Monitoring the three-phase power, temperature, rotational speed and flow of pumping unit by sensors. When abnormal operation take place, it can cut off the power of the oil pump and give an alarm, at the same time the