ARM和CDMA的油井工况远程监测系统

　　The monitoring of the pumping wells is an important link for oil production，and it iscapable of helping to judge the operation condition of the pumping well and providing

　　reliable proof of high efficiency，reasonable exploitation and the convenient management for

　　the well．With the rapid development of the oil industry，the traditional manual operation Can’tmeet the needs of modem oil production．The remote monitoring system can overcome theshortage．In this paper，the remote monitoring system埘tll perfect function，high reliabilityand low cost is presented，in which computer technology，electronic technology and

　　communication technology are involved。The indicator diagram of the pumping well is an important method to know the

　　operation condition of the oil pump in the well．It is a diagram consisting of the displacement

　　and the load of the sucker rod in acomplete period．At present，taking advantage of the

　　wire—drawing displacement sensor to obtain the displacement is a normal method，but it can’tbe applied to the long—term，continuous and real-time monitoring because of its short life．Inthis paper，the acceleration sensor is proposed to obtain the starting point of each period

　　instead of the wire--drawing displacement sensor，and then wire··drawing displacement sensor

　　is used to calibrate the dot displacement at a fixed time in a

　　period，which ensure the accuracy

　　of the displacement．The operation condition sensor，the handy receiver，the data relay unit and the data

　　management center are involved in the system．The operation condition sensors set on the

　　pumping wells Call collect and store the indicator diagram data at a fixed time，then send the

　　data to the data relay unit．And the data of several operation condition sensors will be

　　gathered by the data relay unit and transmitted to the data management center by the remote

　　network，where storing，inquiring，analyzing and priming Can be accomplished，as well a

　　data share by network．The handy receiver is used to set and calibrate the operation condition

　　sensor，and obtain the indicator diagram dat