A cable-free storage seismograph data acquisition method

Abstract

The invention discloses a cableless storage type seismograph data acquisition method. The cableless storage type seismograph data acquisition method is characterized by after ordered initialization and configuration of the cableless seismograph, based on sampling untimely overtime processing and data sampling overtime processing, being able to control ordered process of the data acquisition task,when receiving a command of uploading data, writing the acquired data into a circle buffer zone, and then uploading the acquired data to PC, and being able to check the quality of the real-time acquired data at any time. The cableless storage type seismograph data acquisition method can effectively guarantee that the cableless storage seismograph can perform acquisition and sampling work in various complicated conditions, and can ensure correctness and integrity of the sampling data.

Description

technical field [0001] The invention relates to the field of cable-free storage seismographs, in particular to a data acquisition method for cable-free storage seismographs. Background technique [0002] The cable-free storage seismograph is an autonomous node data collection station. During the construction process, the collected data is stored in the collection station. After the construction is completed, the data stored in the cable-free storage seismograph is downloaded. The staff Synthesize the final required data according to the requirements. The cableless storage seismograph can not only be used in seismic prospecting, but also realize the application in electrical prospecting. This kind of equipment is light, easy and efficient to deploy in the field, and is not affected by the natural environment such as the surface. It can adapt to the needs of various complex surface conditions, and can also be mixed with other collection equipment (including cable systems). ...

AI Technical Summary

Problems solved by technology

In the actual construction process, there will be unknowable short-term loss of GPS signals. When the GPS signal is lost, it will be impossible to end the data collection of the current sub-acquisition task in time, which will affect the execution of the next sub-acquisition task. It will inevitably affect the collection tasks of the entire collection station, and even lead to the failure of the collection tasks of the entire collection station, resulting in a waste of human, material and financial resources

In addition, it is difficult to ensure that the cable-free storage seismograph can always obtain GPS signals in the field

If the GPS time is directly synchronized to the FPGA clock, the FPGA clock deviation may occur during long-term acquisition, resulting in out-of-synchronization of the data of each cable-free storage seismograph, and the FPGA clock synchronization is relatively complicated

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