US 2026/0118535 A1Published application

Method for managing seismograph sampled data, seismograph, and storage medium

AssigneesChina Petroleum & Chemical Corporation, Sinopec Geophysical Research Institute

InventorsChengyu HONG, Zhixiang SONG, Shangqin YANG

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Abstract

A seismograph includes: a crystal oscillator for generating a local clock signal; a data acquisition unit, coupled to the crystal oscillator and configured to acquire sampled data based on the local clock signal, and the data acquisition unit is further configured to acquire a fixed amount of sampled data within each period of the clock signal; a reference clock receiver for receiving a reference clock signal; and a controller, which is coupled to the data acquisition unit and the reference clock receiver and processes the sampled data. Also described are a method for managing sampled data of a seismograph, a controller, a non-transitory machine-readable storage medium, and a program product.

Claims22

Dependent claims

A seismograph, comprising:

a crystal oscillator configured to generate a local clock signal;
a data acquisition unit, coupled to the crystal oscillator and configured to acquire sampled data based on the local clock signal, and the data acquisition unit further configured to acquire a fixed amount of sampled data within each period of the clock signal;
a reference clock receiver configured to receive a reference clock signal;
and
a controller coupled to the data acquisition unit and the reference clock receiver, and configured to:
receive the sampled data from the data acquisition unit;
calculate the actual amount of sampled data since the last time the reference clock receiver was started and the previous reference clock signal was received;
determine whether the actual amount reaches a threshold;
in response to the actual amount reaching the threshold, start the reference clock receiver and receive a new reference clock signal from the reference clock receiver;
determine the reference amount of sampled data based on the new reference clock signal and the previous reference clock signal;
and
process the sampled data so that the amount of the processed sampled data corresponds to the reference amount.

9 more elements

A method for managing sampled data of a seismograph, comprising:

receiving sampled data, which is acquired by a data acquisition unit based on a local clock signal generated by a crystal oscillator in the seismograph, wherein the amount of sampled data obtained within each period of the local clock signal is fixed;
calculating the actual amount of sampled data since the last time the reference clock receiver was started and the previous reference clock signal was received;
determining whether the actual amount reaches a threshold;
in response to the actual amount reaching the threshold, starting the reference clock receiver to receive a new reference clock signal from the reference clock receiver;
determining a reference amount of sampled data based on the new reference clock signal and the previous reference clock signal;
and
processing the sampled data so that the amount of the processed sampled data corresponds to the reference amount.

4 more elements

Dependencies are inferred from the claim text.