Configuration method of channel equalizer for signal remote transmission cable transmission
A channel equalizer and signal transmission technology, which is applied in the field of geophysical exploration, can solve the problems of narrow adaptation range and narrow adaptation range of traditional equalizers, and achieve the effects of fast equalizer, easy structure and implementation, and improved equalization effect
Inactive Publication Date: 2016-03-02
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
[0006] In order to overcome the above-mentioned problems existing in the prior art, the present invention provides a configuration method for the equalizer of the cable transmission channel of the remote transmission signal, which solves the problem that the traditional equalizer in the prior art has a narrow adaptation range. Analyze the characteristics to obtain the electrical transmission characteristics of the signal transmission cable, and based on it, build the best equalizer to minimize the signal distortion during the signal cable transmission process
[0008] The beneficial effect of the present invention is that it provides a configuration method for signal remote transmission cable transmission channel equalizer, which solves the problem that the traditional equalizer design method in the prior art has a narrow adaptability range, and through the analysis of the electrical characteristics of the cable , get the equivalent circuit parameters of the signal transmission cable and then design the optimal equalizer to offset the attenuation and distortion of the signal through long-distance transmission
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] figure 1 It is a flow chart of Embodiment 1 of a method for configuring a signal remote transmission cable transmission channel equalizer provided by an embodiment of the present invention, which is composed of figure 1 It can be seen that the method specifically includes:
[0021] S101: Measure the open circuit impedance and short circuit impedance of the signal transmission cable. In a specific embodiment of the present invention, a 7-core logging s...
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The invention provides a method for configuring a transmission channel equalizer of a signal telemetry cable. The method includes measuring open-circuit impedance and short-circuit impedance of the signal transmission cable; determining transmission characteristic parameters of the signal transmission cable according to the open-circuit impedance and the short-circuit impedance; determining characteristic impedance and a propagation coefficient of the signal transmission cable according to the transmission characteristic parameters of the signal transmission cable; determining characteristic parameters of the equalizer according to the transmission characteristic parameters, the characteristic impedance and the propagation coefficient of the signal transmission cable. The method has the advantages that the problem of narrow application range of the traditional equalizer in the prior art is solved, and signal distortion of the signal cable in transmission procedures is reduced to the greatest extent.
Description
technical field [0001] The present invention relates to the technical field of geophysical prospecting, in particular to the signal processing technology for signal remote transmission cable transmission channel measurement, specifically a method for configuring a signal remote transmission cable transmission channel equalizer. Background technique [0002] With the development of modern drilling technology, coiled tubing drilling (CTD) technology has been widely used in re-drilling and multilateral well drilling. During the drilling process of coiled tubing, it is necessary to monitor the directional parameters such as well inclination azimuth and tool face angle and geological parameters in real time, so as to know the current state of the bottom hole assembly and the bottom layer information in time, so as to ensure that the drill bit can be in the target layer. walk through. With the development of modern while-drilling technology, the measurement parameters are constan...
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IPC IPC(8): E21B47/12H04L27/01
Inventor 双凯刘涛蔡洪明
Owner CHINA UNIV OF PETROLEUM (BEIJING)