Composite high-speed acquisition and transmission system

Abstract

Disclosed is a composite high-speed collection and transmission system. When a first connector is connected with a voltage-type pressure sensor, a first control end of a single chip microcomputer processing unit outputs a first control signal to enable a second end and a third end of a first electronic switch to be communicated, a voltage collection unit receives voltage from a battery pack and outputs a voltage signal received through the first connector to a low-pass filter, the low-pass filter filters the received voltage signal and then outputs the same to an analog-digital converter, the analog-digital converter converts the received voltage signal into a digital signal and then outputs the digital signal to the single chip microcomputer processing unit, and a USB-TTL conversion circuit receives the digital signal from the single chip microcomputer processing unit, converts the same into a USB signal and then outputs the USB signal to a computer of a remote monitoring center through a second connector. The composite high-speed collection and transmission system is high in data transmission rate, high in reliability and high in interference resistance.

Description

technical field [0001] The invention relates to a high-speed acquisition and transmission system, in particular to a composite high-speed acquisition and transmission system for well mud pressure signals in the oil drilling field. Background technique [0002] Intelligent drilling tools (rotary steering, vertical drilling) in the field of oil drilling need real-time two-way data communication with the monitoring equipment on the ground when working in the downhole. The upload and download of data are adjusted according to the special communication protocol in the drilling pipeline The pulse frequency of the mud pressure is realized. Among them, the downhole drilling tool continuously transmits various state parameters of the downhole drilling tool to the monitoring equipment on the ground by changing the mud pressure pulse frequency, and at the same time, the monitoring equipment on the ground transmits control instructions to the downhole drilling by changing the mud pressu...

AI Technical Summary

Problems solved by technology

[0003] Due to the long distance of sending signals from several thousand meters underground to the monitoring equipment on the ground, the mud pressure pulse signal received by the monitoring equipment on the ground may be very weak and subject to a lot of harmonic interference. And transmission equipment not only has low transmission rate, poor reliability, poor anti-interference ability, and serious packet loss, which will cause misjudgment and misoperation of operators, but also has single function, narrow application area, and does not have general-purpose integrated collection and transmission capabilities. There are often great limitations in different usage environments

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