The Research And Design Of The Underground Wireless Communication Transceiver Circuit System

In the process of oil-gas exploration and development,it is of great significance to accurately obtain the data of pressure,temperature and so on in real time.Due to the non-conductivity of mechanical structures such as downhole test valves,the traditional formation test method is difficult to effectively monitor the collection situation in real time.Therefore,this paper proposes a set of wireless short distance transmission system for downhole test valve based on the theory of electromagnetic induction,which transmissions the downhole data in real time through the long distance wireline transmission of short distance wireless combined cable.Based on this theory,the experimental scheme is improved and perfected.Based on the theory of electromagnetic induction,this paper presents a set of transceiver circuit system schemes for testing the underground wireless communication.A simulation platform for electromagnetic signal transmission is established in the laboratory.Through repeated experiments and analysis,the appropriate data such as the transmission band of the wireless channel can be obtained.The preliminary experimental work is completed,which provides a reliable basis for parameter selection and design of wireless communication transceiver circuit system.On the basis of this theory,the related collection circuit module,the signal transmitting circuit module and the signal receiving circuit module are designed to complete transceiver circuit system of the downhole wireless communication with the PIC18F45K40 MCU as the main control chip,and realize the function of the downhole wireless communication.