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Cable detector test device

A technology of testing devices and geophones, applied to instruments, geophysical measurements, etc., can solve problems such as cumbersome maintenance work, low efficiency, and affecting cable maintenance progress, and achieve high maintenance work efficiency and improved maintenance progress.

Active Publication Date: 2013-11-20
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, a certain faulty working channel was replaced by a faulty geophone found by cable maintenance personnel, and then it could only be reconnected to the cable for testing. During the test, due to power-on (DC 365 volts), the maintenance of other working channels only Can be paused, so the maintenance work is cumbersome and inefficient, which greatly affects the progress of cable maintenance

Method used

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  • Cable detector test device

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Embodiment

[0055]After the power supply control module is powered on, it provides a starting voltage to generate 6.3V voltage, which is supplied to the input circuit. Generate 2.7V voltage to supply FDU analog-to-digital conversion circuit and subsequent circuits. The filter circuit receives the analog signal from the input circuit and eliminates the noise of high-frequency components, and then sends the signal to the analog-to-digital conversion circuit. The analog-to-digital conversion circuit converts the analog signal collected by the filter circuit into a 256KHZ digital stream signal and sends it to the communication circuit , the communication circuit completes the first-level extraction processing of the 256KHZ serial digital stream signal from the D / A conversion circuit, outputs a 24-bit 4KHZ digital signal to the interface circuit, and the interface circuit completes the shaping, receiving and forwarding of the parallel digital signal . The clock signal in the data closely foll...

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Abstract

The invention discloses a cable detector test device and relates to the field of cable maintenance. The cable detector test device comprises a power supply control module, and an interface circuit, a communication circuit, an analog-digital conversion circuit and an input circuit, which are connected in sequence; the input circuit is used for connecting with a cable detector, receiving an inputted waveform signal, and obtaining an analog signal; the analog-digital conversion circuit is used for converting the analog signal outputted by the input circuit into a serial digital signal; the communication circuit is used for carrying out serial-parallel conversion and sampling processing on the serial digital signal outputted by the analog-digital conversion circuit and obtaining a parallel digital signal; the interface circuit is used for outputting the parallel digital signal outputted by the communication circuit to a cable test system; and the power supply control module is used for supplying electric energy to the modules. The cable detector test device can independently test one working channel. The maintenance of other working channels is not affected in the test process, and the cable maintenance progress is greatly accelerated.

Description

technical field [0001] The invention relates to the field of cable maintenance, in particular to a cable detector testing device. Background technique [0002] Offshore Seismic Exploration SENTINEL cables are electronic equipment used to acquire seismic data. Its features: Cable design Each section of SSAS (working cable) is 150 meters long, contains 6 digital units (FDU), each digital unit (FDU) controls 12 working channels, and the first channel is 9 detectors (of which The 8 detectors are the detectors of this working channel, the detector at the second position is the 8th detector of the 12th channel of the upper cable), the 12th channel is 7 detectors in parallel, and the other channels are 8 detectors in parallel. The data collected by the cable detector must be transmitted to the cable test system through the FDU (that is to say, the cable test system manages the cable through the FDU). When the 150-meter-long cable is placed on the workbench for maintenance, the el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V13/00
Inventor 李颖灿
Owner CHINA NAT OFFSHORE OIL CORP
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