Multi-redundant synchronous data acquiring device and method of non-cable seismograph

Abstract

The invention discloses a multi-redundant synchronous data acquiring device and method of a non-cable seismograph. The method is a multi-redundant synchronous data acquiring method of a non-cable seismograph based on a UTC (universal time coordinated) time system, and comprises the following steps: through introducing a local auxiliary UTC time service system and combining a GNSS (global navigation satellite system) time service technology, constructing a multi-redundant TUC time service system so as to guarantee that a non-cable seismograph acquiring station can synchronize the data acquisition under the condition of loading a GNSS time service signal; before acquiring the seismic data, firstly timing the local UTC, selecting one of continuous record or UTC time interval or UTC time point to set a synchronous acquiring task so as to generate a synchronous data acquiring task list; and marking the UTC time scale information on the acquired seismic data according to the UTC time service information, storing in a local memory, and finally obtaining a complete synchronous single shot record. The synchronous seismic data can be acquired by the non-cable seismograph acquiring station under any severe satellite signal condition by using the acquiring device and the acquiring method; and the synchronous precision is superior to 4 microseconds, and the synchronous requirement of resource exploration is completed satisfied.

Description

Technical field: [0001] The invention relates to a cableless telemetry seismograph in geophysical exploration, in particular to a multi-redundant data acquisition synchronization method in the cableless storage seismograph with UTC as the synchronization reference. Background technique: [0002] The development of seismographs has gone through three major stages: analog seismographs, centralized seismographs, and modern distributed telemetry seismographs. The current mainstream seismographs are wired telemetry seismographs, and their typical representatives are the 408UL, 428XL of the French Sercel Company and the American Seismograph. ION's Scorpion seismic exploration system. Taking 428XL as an example, the modern telemetry seismograph adopts a wired master-slave architecture. The measurement system consists of a master control station (controlling and managing the overall measurement workflow), a cross station (forwarding measurement commands and data), an acquisition sta...

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Problems solved by technology

However, under the conditions of poor satellite signals near mountains and dense forests, the timing information of the GPS positioning system cannot be obtained, or the GPS signal loses lock due to electromagnetic interference and other reasons, which may cause a batch of collection stations to fail to achieve synchronous data collection, making the entire Acquisition system fails to work properly and becomes paralyzed, which largely limits the application of cableless seismometers

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