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Small size vertical-pendulum clinometer

A technology of vertical pendulum and inclinometer, which is applied in the direction of measuring inclination, instruments, measuring devices, etc. It can solve the problems of high performance-price ratio, susceptibility to interference, difficult installation, etc., and achieves convenient handling of instruments, improvement of precision, use and management convenient effect

Inactive Publication Date: 2003-11-05
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The horizontal pendulum inclinometer is widely used because of its mechanical and optical amplification, which greatly improves its measurement sensitivity; but its stability is poor and it is susceptible to interference
The vertical pendulum inclinometer adopts the plumb principle of the pendulum. The structure of the pendulum is simpler than that of the horizontal pendulum, and the performance is stable. However, since the measurement sensitivity is restricted by the length of the pendulum, if the sensitivity is high, the structure is huge, the performance-price ratio is high, and the installation is difficult. Therefore, it is not widely used

Method used

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Embodiment Construction

[0022] Describe in detail below in conjunction with accompanying drawing.

[0023] Depend on figure 1 It can be seen that the present invention is composed of a main device 1, a micrometer device 2 and an acquisition device 3, which are connected in sequence.

[0024] (1) Main device

[0025] The main device 1 is composed of a pendulum system 1.1, a sensor 1.2, a support 1.3, a base 1.4, a leveling mechanism 1.5, and a locking pendulum mechanism 1.6.

[0026] ① Pendulum system 1.1 is a small vertical pendulum system, mainly composed of hanging wire 1.1.1, pendulum rod 1.1.2, and pendulum (mass) 1.4. It is suspended by double wires, so that the suspension method has only one degree of freedom.

[0027] The performance of hanging wire 1.1.1 is crucial to the present invention, and its material adopts constant elastic alloy copper Ni42CrTi, has larger tensile strength, has better elastic stability after heat treatment, so hanging wire can be 1.1.1 is made very thin, with a thi...

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Abstract

The invention discloses a small vertical pendulum inclinometer, relates to the geoscience observation technology, and is especially suitable for the observation of oblique solid tides and earthquake precursors. In order to improve the sensitivity and precision of tilt measurement and reduce the size of the instrument, the invention adopts the main structure of a small vertical pendulum and capacitive displacement micrometer. The pendulum system of the present invention is mainly composed of two hanging wires, a pendulum and a pendulum, and the pendulum is also the movable capacitor plate of the capacitive displacement sensor. The micrometer device is mainly composed of an oscillator, an inverter, a preamplifier, a frequency selective amplifier, and a lock-in amplifier. Since the equivalent pendulum length is only 10cm and the micrometric accuracy is as high as 0.0001mm, the performance and price ratio of the instrument is greatly improved, so it has broad application prospects.

Description

technical field [0001] The invention relates to the geoscience observation technology, and is especially suitable for the observation of oblique solid tides and earthquake precursors. Background technique [0002] In order to measure the tilting solid tide caused by the tidal force of the sun and the moon, the ground is taken as the reference, and the ground is regarded as stationary; when observing the change of the ground tilt, the plumb line is used as the reference. To measure inclined solid tides, horizontal pendulum inclinometers and vertical pendulum inclinometers are widely used at present. The horizontal pendulum inclinometer is widely used due to the greatly improved measurement sensitivity through mechanical and optical amplification; but its stability is poor and it is easily disturbed. The vertical pendulum inclinometer adopts the plumb principle of the pendulum. The structure of the pendulum is simpler than that of the horizontal pendulum, and the performance ...

Claims

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Application Information

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IPC IPC(8): G01B7/30G01C9/12G01D5/241
Inventor 胡国庆蒋幼华张道忠朱晓平罗峰
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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