High-reliability seismograph formed by four measuring units

Abstract

The invention discloses a high-reliability seismograph formed by four measuring units. The high-reliability seismograph comprises three direction measuring units arranged according to directions of X,Y and Z coordinate axes in an orthogonal coordinate system, a P direction measuring unit, and a master control unit, the P direction measuring unit is arranged along the diagonal direction of a cubeformed by the X, Y and Z coordinate axes, each measuring unit comprises a corresponding pendulum body and an oscillation and feedback circuit, the master control unit comprises a master control chip and an analog-to-digital conversion circuit, a ground vibration signal sensed by each pendulum body is processed through the corresponding oscillation and feedback circuit, converted to a correspondinganalog voltage signal, and transmitted to the analog-to-digital conversion circuit, and the analog-to-digital conversion circuit converts the corresponding analog voltage signal to a corresponding digital signal and transmits the digital signal to the master control chip. According to the high-reliability seismograph, the reliability of the seismograph can be greatly improved, the seismic observation difficulty is reduced, and the detection precision of the seismograph is guaranteed.

Description

technical field [0001] The invention relates to a seismograph, in particular to a highly reliable seismograph composed of four measuring units. Background technique [0002] Existing seismometers mainly include pendulums in three directions: east-west, north-south, and vertical. The pendulum is connected by the pendulum bracket and the pendulum through the pendulum reed, and the free movement of the pendulum around the pendulum reed Perceive the ground motion, and then convert the ground motion into an electrical signal to realize the detection of the ground vibration signal. [0003] In the existing seismometers, on the one hand, the pendulum body needs to be leveled and zeroed before working, so that the pendulum body is in a normal working state. The leveling needs to be manually adjusted by adjusting the feet or equipped with a special leveling device. Time-consuming and labor-intensive, the implementation cost is high, and the leveling device will affect the detection ...

AI Technical Summary

Problems solved by technology

[0003] In the existing seismometers, on the one hand, the pendulum body needs to be leveled and zeroed before working, so that the pendulum body is in a normal working state. The leveling needs to be manually adjusted by adjusting the feet or equipped with a special leveling device. Time-consuming and labor-intensive, the implementation cost is high, and the leveling device will affect the detection accuracy of the seismometer; on the other hand, if one of the three-directional pendulums fails or the detection performance decreases, the detection results of the seismometer will be affected , the reliability is not high, especially for seismometers installed in monitoring positions such as seabeds and deep wells, the maintenance is difficult, the cost is high, and the reliability requirements are higher

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