Design and application of transmitter module of peephole instrument based on CLC2000

Abstract

The images taken by the camera and the floodlight are transmitted to the monitor screen by the peeping instrument, and then the bubbles of the gas in different geological layers in the coal bed gas well are observed and the location of the gas outlet is found. Coaxial cable transmission of video signals is non-balanced transmission, while twisted pair transmission is balanced transmission. The interface of the video device is also often unbalanced. Video signal transmission in the twisted pair, the resistance loss, medium resistance loss and radiation loss of signal power from attenuation off some of the transmission line transfer to the load, and the size of the attenuation associated with the transmission distance and the signal frequency, must be set in a certain gain and compensate the frequency weighting at the receiving end. The simulation circuit diagram of the single-ended-differential double-sided converter designed based on CLC2000, not only can match the twisted-pair characteristic impedance, and amplifier and twisted pair can be isolated, expanded capacitive load drive ability, also can eliminate the high frequency signal oscillation caused a surge in the end gain and, series resistance and can make gain slightly down, meet the demand of CBM Wells with peep instrument field.