Patent ID: 11933691
Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 1:
2. The CO2 storage state networking monitoring system with multi-information fusion according to claim 1, characterized in that a running mode of the orientation electrical signal obtaining unit comprises a single-electrode emitting measurement mode, a symmetric-electrode emitting measurement mode, a remote detection mode and an attenuation-lowering remote detection mode;
the single-electrode emitting measurement mode is follows:
any one metal electrode is selected as the emitter electrode, the other n−1 electrodes serve as the receiver electrodes, the potential difference between the electrodes in each group of emitter electrode-receiver electrodes is recorded as a potential difference for single-electrode emitting measurement;
another metal electrode, never being selected, is selected as the emitter electrode, the potential difference between the electrodes in each group of emitter electrode-receiver electrodes is measured until all the metal electrodes have been selected as the emitter electrodes, and the potential difference for single-electrode emitting measurement is recorded;
the symmetric-electrode emitting measurement mode is follows:
the center of a length of each non-conductive sleeve is selected as a symmetric axis, and the metal electrodes, equally distant from the symmetric axis, serve as a metal electrode pair;
any one metal electrode pair is selected as the emitter electrode pair, the other n−2 electrodes serve as the receiver electrodes, the potential difference between the electrodes in each group of the emitter electrode pair-receiver electrodes is recorded as a potential difference for symmetric-electrode emitting measurement;
another metal electrode pair, never being selected, is selected as the emitter electrode, the potential difference between the electrodes in each group of emitter electrode-receiver electrodes is measured until all the metal electrode pairs have been selected as the emitter electrode pairs, and the potential difference for symmetric-electrode emitting measurement is recorded;
the remote detection mode is as follows:
two electrodes A and B at a preset interval of k electrodes are selected as high-voltage emitter electrodes, wherein k is even;
two electrodes C and D in the middle between the electrodes A and B are selected as high-voltage emitter electrodes, and A, B, C and D form a high-voltage emitter electrode group;
a detection current at high voltage is emitted by the high-voltage emitter electrodes, the other n−4 electrodes serve as receiver electrodes, and the potential difference between each group of high-voltage emitter electrode group-receiver electrodes is recorded as a potential difference for remote detection;
another metal electrode combination, never being selected, is selected as a high-voltage emitter electrode group, the potential difference between each group of high-voltage emitter electrode group-receiver electrodes is measured until all possible high-voltage metal electrode combinations are selected, and the potential difference for remote detection is recorded;
the attenuation-lowering remote detection mode is as follows:
two electrodes E and F at a preset interval of q electrodes are selected as low-voltage emitter electrodes, wherein q is even;
two electrodes G and H in the middle between the electrodes E and F are selected as high-voltage emitter electrodes, and E, F, G and H serve as an attenuation-lowering remote detection emitter electrode group;
a detection current at low voltage is emitted by the low-voltage emitter electrodes, a detection current at high voltage is emitted by the high-voltage emitter electrodes, at this time, the potential difference between the two electrodes, close to the low-voltage emitter electrodes between high-voltage emitter electrodes and the low-voltage emitter electrodes is 0, the other n−4 electrodes serve as receiver electrodes, and the potential difference between each group of attenuation-lowering remote detection emitter electrode group-receiver electrodes is recorded as a potential difference for attenuation-lowering remote detection;
another metal electrode combination, never being selected, is selected as a attenuation-lowering remote emitter electrode group, the potential difference between each group of attenuation-lowering remote emitter electrode group-receiver electrodes is measured until all possible metal electrode combinations are selected, and the potential difference for attenuation-lowering remote detection is recorded.