Data transmission system in petroleum logging instrument
A data transmission system, oil logging technology, applied in surveying, wellbore/well components, earth-moving drilling, etc., can solve the problems of high chip price, increased maintenance cost, single system function, etc., to reduce instrument manufacturing and maintenance. Cost, improve data transmission speed, and the effect of high communication rate
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[0026] The circuit structure of the oil well logging instrument is divided into two parts: the uphole and the downhole. The uphole part mainly includes the ground communication system, the power supply system and the upper computer operation software. The downhole part mainly includes the data acquisition module, the downhole telemetry communication module and the power conversion module.
[0027] The data transmission of the logging tool consists of three parts: the data communication between the downhole data acquisition modules, the communication between the downhole communication module and the ground telemetry system, and the communication between the ground system and the PC. The communication solution proposed by the present invention is: a master-slave distributed measurement and control system is adopted through the CAN bus structure between the downhole telemetry board and the data acquisition board. The downhole telemetry board and the ground communication part adopt...
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