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A multi-channel data acquisition synchronization system

A data acquisition and synchronization system technology, applied in seismology, instruments, measurement devices, etc., can solve the problems of array element clock drift, affecting the synchronization of array elements, etc., to improve accuracy and stability, and reduce time and frequency drift. , the effect of reducing dependence

Inactive Publication Date: 2019-02-15
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The large temperature difference experienced during this process will cause the clock of the array element to drift, thus affecting the synchronization between the array elements

Method used

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  • A multi-channel data acquisition synchronization system
  • A multi-channel data acquisition synchronization system
  • A multi-channel data acquisition synchronization system

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] figure 1 It is a schematic structural diagram of a multi-channel data acquisition synchronization system provided by an embodiment of the present invention. like figure 1 As shown, the system includes a multi-channel data acquisition synchronization device 400, and the multi-channel data acquisition synchronization device 400 includes one or more timing daughter cards 300; The card 300 is provided with a thermal insulation shell 600 ; the thermal insulation shell 600 is controlled by the constant temperature device 500 .

[0024] The multi-channel data collection synchronization device 400 also includes a GPS antenna 102 , a base station timekeeping device 100 , and an interface device 200 . The GPS antenna 102 is used to receive the GPS clock signal; the base station timekeeping device 100 receives the GPS c...

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Abstract

The invention relates to a multichannel data acquisition synchronization system. The system comprises a multichannel data acquisition synchronizer (400), and the multichannel data acquisition synchronizer (400) comprises one or more time service sub-cards (300); the multichannel data acquisition synchronizer (400) is externally provided with a constant-temperature apparatus (500), and the time service sub-cars (300) are each externally provided with a thermal insulation housing (600); and the thermal insulation housings (600) are under the control of the constant-temperature apparatus (500). The multichannel data acquisition synchronization system provided by the invention can reduce dependence of the system on a GPS during work and effectively improves time accuracy and stability; and when the time service sub-modules work at work equipment, time frequency drifts caused by temperature change can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of data acquisition synchronization, in particular to a multi-channel data acquisition synchronization system. Background technique [0002] Submarine multicomponent seismic technology uses ocean bottom seismographs (OBS, Ocean Bottom Seismograph) to detect marine gas hydrates. Placing the OBS on the seabed to receive signals can provide a wealth of converted shear wave information, which has played an important role in the exploration of marine gas hydrates and has been valued by the industry. Similarly, metal deposits and oil resources on the seabed can also be explored using equipment such as OBS or seabed electromagnetic instruments. [0003] Both the submarine seismograph and the submarine electromagnetic instrument adopt the array acquisition method, that is, many array elements form an array at the same time, and the data collected by each array element are fused and processed to form a data image. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/22
CPCG01V1/223
Inventor 汤亮张忠山郑成诗季磊支萌辉张倩
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI