Ocean bottom seismograph equipment capable of improving signal-to-noise ratio

Abstract

The invention discloses ocean bottom seismograph equipment capable of improving a signal-to-noise ratio, and aims to provide ocean bottom seismograph equipment capable of improving the signal-to-noiseratio, which is stable and reliable in structure and can reliably recycle an ocean bottom seismograph. The ocean bottom seismograph equipment comprises a seismograph; a protective shell which is usedfor protecting the seismograph, wherein the seismograph is fixedly installed in the protective shell; a ballast anchor; and a seismograph mounting structure, wherein the seismograph mounting structure comprises a positioning groove which is formed in the ballast anchor and provided with an upward opening, a positioning block which is arranged at the bottom of the protective shell and used for being matched with the positioning groove, a closed cavity formed in the positioning block, an electromagnet arranged in the closed cavity, a battery for providing a power source for the electromagnet and an iron plate embedded in the bottom of the positioning groove. The positioning block is inserted into the positioning groove, the positioning block is tightly attached to the iron plate, and the electromagnet is attracted to the iron plate so that the seismograph, the protective shell and the ballast anchor are tightly connected into a whole.

Description

technical field [0001] The invention relates to a seabed seismograph device, in particular to a seabed seismograph device capable of improving the signal-to-noise ratio. Background technique [0002] Undersea seismographs are seismometers designed to observe microvibrations caused by earthquakes and other tectonic events on the ocean floor. The current submarine seismograph equipment generally includes: a seismograph, which is used to detect the vibration signal of the seabed formation, and the buoyancy of the seismograph is greater than gravity; a protective shell, which is used to protect the seismograph, and the seismograph is fixedly installed in the protective shell; Ballast anchor; metal wire, used to connect the protective shell and the ballast anchor, the seismograph, the protective shell and the ballast anchor have been connected as one, the wire fuse device, the wire fuse device is used to fuse the wire, in When recovering the seismograph, the staff on the ship is...

AI Technical Summary

Problems solved by technology

In the current submarine seismograph equipment, there are the following deficiencies. First, because the protective shell and the ballast anchor are connected by wires, the protective shell and the ballast anchor are easily connected loosely, making the seismograph vulnerable to seabed currents, etc. The interference of external factors reduces the signal-to-noise ratio and affects the acceptance of seismic waves by the seismograph; secondly, due to the complex environment of the seabed, it is prone to factors such as the failure of the wire fuse device itself and the failure of command reception, so that the wire cannot be fused. The problem that caused the recovery of the seismograph to fail

[0003] On the other hand, due to the complex topography of the seabed, even if the seabed seismometer is placed in a relatively flat area on the seabed surface, it cannot be guaranteed that the bottom surface of the ballast anchor can be tightly and stably supported on the seabed surface. Finally, due to the uneven seabed surface, there is often a gap between the bottom surface of the ballast anchor and the seabed surface, so that the contact area between the ballast anchor and the seabed surface is small, and the stability of the ballast anchor on the seabed is not good, and it is easy to Interference from external factors such as seabed currents reduces the signal-to-noise ratio and affects the acceptance of seismic waves by the seismograph

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