The Prototype Development Of Distributed MRS-TEM Combined Detection System

The system of the MRS-TEM combined groundwater detection instrument has beensuccessfully developed by the project team in jilin university through independent research anddevelopment, and it has gradually realized the development trend of the producibility.TwoMRS-TEM combined detectioninstrumentswere sold to Outer Mongolia in July2012, and theyhave got several practical applications in engineering prospecting. With the development oftechnology and the needs of field exploration engineering, there is something to be improved.Itssubsystems receiver and transmitter of the existing MRS-TEM instrument system are integratedtogether and some of the modules are used in common，so the design of their modules, structureand the design of the coils of the receiver and transmitter are restricted by each other. Besides，when used in the wild, laying coil and moving devices are not convenient, and a wasteof timeand work. With the method of pitch and catch technique, it can only detect data of one point at atime, so its work efficiency is a little low;with a single channel acquisition, the anti-interferenceability of the instrument is poor, so the measurement accuracy is not high.With the rapid development of society, the accuracy requirements for the time by so manykinds of electronic equipment are increasing day by day. The clock synchronization technologyis playing an extremely important role in several aspects, such as positioning, communicationssatellite launch, and navigation, submarine and so on. Distributed data acquisition systems alsohave been widely used in ships, aircraft and such areas where data acquisition is larger and withhigher real-time demand. If the acquisition devices of distributed acquisition system have non-uniform clock benchmark, then the data obtained can’t reflect the actual situation.In distributedsynchronous data acquisition systems, how to make the remote device synchronize operation andmake the data collected transmitted in real time and reliably are what we have to solve. Thesetechnologies such as modern GPS synchronization technology, the development of computertechnology, network technology and communication technology have provided us with a goodsolution.My thesis design is based on the existing MRS-TEM combined groundwater detectioninstrument system platform, and then I have made some improved designs and experiments. Thisdeign introduces the GPS synchronization technology and Wi-Fi communication technology, andcombined with the existing hardware resources and software platform, I have built a distributed a prototype of distributed MRS-TEM combined detection system.In the distributed MRS-TEMdetection system principle prototype, the notebook computer and the transmitter, the uppermachine and the receiver, the transmitter and the receiver are all independent from each other,and without any hardware connection, so the distributed system can realize the mobile detectionand distributed detection two working modes. The realization of the full automatic control of theinstrument is all done by upper machine in Labview control software platform with the Wi-Ficommunication technology. Thelower computers executed the corresponding command whenthey received the command, so as to realize wireless distributed MRS-TEM combined detectionprinciple prototype.With the design of high precision GPS synchronization module and Wi-Fi wirelesscommunication module, we construct the distributed MRS-TEM detection machine principleprototype. I have done several experiments including indoor simulated tests and field tests. Theprinciple prototype has detected corresponding signals, and with inverse interpretation; we haveverified the feasibility of the principle prototype of distributed detection system.