Intellectualized Integrated Water Quality Chemical Analysis Instrument Based On GPRS

In the exploitation of oil well, the analysis between input water and detached from exploitation oil that is benefit for the project and protecting the well is very important. The technology of GPRS can carry out the real-time chemic analysis of multi-well's water quality. Aimed at this condition, the article investigate the system of Intellectualized Integrated Water Quality Chemical Analysis Instrument based on GPRS, which is using ion selectivity electrode and based on deeply research on GPRS data service technical mechanism concerned. The main work is as following:1. With the structure of host-client, PC overhead construction ADAM-5510M what take the center distribute the I/O ports and analog resources. The PLC control system is made by C platform, which is used for the automation of solution titration,ion selectivity electrode washing and data collection.2. Based on the library functions of ADAM-5510 MODBUS protocol, the data transmission sub-system of GPRS network is designed. According to GPRS network structure and data transmission interface, the sub-system defines data exchange command groups and real-time transmission of the encapsulated data.3. In the sub-system of data processing and monitoring, apply the Visual C++ and WinSock API programming environment to implement GPRS differential solution, data file management, system parameter configuration, monitoring result time-sharing display and so on; Data is accessing by ADO technology. Consequently, the entire production data backup and querying can be realized easily and quickly. Besides, the whole monitoring scheme was designed based on the multithread technology to realize the data exchanging and monitoring simultaneously.4. Software/hardware debugging of the prototyping device is also conducted and the preplanned function is verified.The curvilinear trend analyzes of the testing data and the choice of the proper data processing modular can make the reliability of this testing system.After debugged, the instrument works stably, and the error is about 10 mg/l,the error data rate is under 10%. The chemical analysis of long-distance control can be widely used in the places such as lab and oil field.