【作者】 洋梅；

【导师】 林成武； 曾一凡；

【作者基本信息】 沈阳工业大学 ， 检测技术与自动化装置， 2005， 硕士

【摘要】 长期以来,由于油井数量众多且分布范围广,因此如何对井场进行安全防范,有效地制止不法分子盗窃原油和户外设备已成为了一个难题。而今,利用单片机控制技术和检测技术等研制的报警系统已经广泛应用于油井现场,但这些系统大多采用无线电台、电话线等通信方式,其固有的缺陷在很大程度上限制了系统性能。另一方面,我国已建成了功能完善、成熟稳定的GSM无线数字移动通信网,其覆盖范围愈来愈大,提供的信息服务也愈来愈多,其中,GSM数据业务及短消息业务(SMS)由于其众多的优势而受到越来越多的青睐。 因此,本文在融合现代检测技术、单片机控制、GSM无线通信等各种现代信息技术的基础上,研制开发出了一种新型的无线防盗报警系统。该报警系统的网络建设依托已有的GSM移动通信网,使该系统充分利用了公网资源,易于构成覆盖整个油田区域的无线监控网络,具有报警响应及时、适应性好等特点。本系统由二级网络结构组成:井场监控终端采用双单片机并行工作的方式,软件用C51语言实现;后台监控中心用Visual Basic语言编写,可实现数据接收、存储、远程控制等强大功能。二者的通信由TC35T通信模块来完成,采用GSM数据业务和短消息业务相结合的方式,实现了对终端的远程遥控和遥信。 本文精简了OSI模型,分别设计了各层的通信规约,并在制作硬件电路和编程调试软件的基础上,实现了系统功能,同时研究了编码技术,把卷积码引入AT指令的传输中,大大提高了系统的可靠性。此研究不仅满足了油田系统的迫切需要,促进了终端遥控遥信系统的发展,而且还在科研上提出一种设计思想:采用第三方成熟的网络,结合多种现代信息技术,实现远程无线通讯的工业控制系统,具有较强的实践意义,并为无人值守的系统开发提供了许多可借鉴的宝贵经验,具有广阔的发展前景。更多还原

【Abstract】 Since the quantity of oil well is numerous and its distribution scope is broad, it’s been a puzzle for a long term to carry out safety for wells efficiently and guard against thieves stealing crude oil and outdoor equipment. Now, developed with single-chipped computer controlling technology and detection technology etc., these alarm systems have applied extensively in the scenes of oil well, whose communication way is wireless broadcasting station or telephone line and so on. Its built-in defect has restricted systematic performance greatly. On the other hand, our country has established a powerful GSM wireless digital net of mobile communication which is covering more and more areas and providing increasing services. And GSM data service and SMS have attracted more and more people because of their numerous advantages.Therefore this paper develops a kind of new wireless alarm system guard against theft on the basis of some modern information technology, such as modern detection technology, single-chipped computer controlling, GSM wireless communication and so on. The construction of system network takes advantage of GSM public net resource fully and is easy to cover the whole oil field, which has characteristics of promptitude and good adaptability etc. This system is composed of two network components: one is well monitoring terminal which adopts parallel work with double single-chipped computer and its software is realized by C51 language; The other is master monitoring station compiled with Visual Basic language,whose powerful function includes receiving data, stocks, long-range control and so on. The two components are linked by TC35T communication modular. With GSM data service and SMS, the system realizes remote control to terminal.This paper retrenches OSI model and designs communication protocols of each layer, and realizes system functions on the basis of facture of hardware circuit and debugging software program. At the same time, coding technology is studied. Convolutional code is introduced into the transmission of AT instruction and raises the reliability of system greatly. This research not only meets oil field’s urgent needs and promotes the development of terminal telemetry system,but also puts forward a kind of design thought: With the third ready-made network and combining various modern information technology, an industrial control system of long-range wireless telecommunication can be realized. It offers valuable experience for other unmanned watched system and has wide developing prospect.更多还原