Piezoelectric type gravity meter

Abstract

A piezoelectric type gravity meter is characterized by being composed of piezoelectric plates (1), electrode plates (2), a mass block (3), a signal generating system (4) and a signal receiving and processing system (5), the electrode plates (2) are attached to the two parallel surfaces of each piezoelectric plate (1) through conductive glue, alternating voltage signals generated by the signal generating system (4) are applied to the electrode plates (2) through a wire, the piezoelectric plates (1), the electrode plates (2) and the signal generating system (4) are connected to form a piezoelectric vibration generator, the other piezoelectric plate (1) and the two electrode plates (2) attached to the surfaces of the piezoelectric plate (1) form a piezoelectric signal receiver, the mass block (3), the piezoelectric signal receiver and the piezoelectric vibration generator are arranged in the gravity direction from top to bottom, and the signal receiving and processing system (5) receives and processes input voltage signals of the signal generating system (4) and output voltage signals generated by the piezoelectric signal receiver.

Description

technical field [0001] The invention relates to a piezoelectric gravimeter, which has a special purpose in measuring the gravitational acceleration and the earth's gravitational field of the earth's surface, high altitude and underwater, and can also be used for inertial navigation, surveying and mapping, aerial survey, geological and geophysical exploration, and earthquake monitoring , Large-scale engineering safety monitoring field. Background technique [0002] Earth's gravitational acceleration g Accurate measurement of , is a long-term research topic in the field of geology and geophysics as well as surveying and mapping. Theoretically, the Earth's gravitational acceleration is related to the interaction between the Earth and the Sun, Moon, and other planets, as well as the Earth's rotation and internal structure. In terms of application, the accurately measured acceleration of the earth's gravity and the distribution and change of the earth's gravity field are also i...

AI Technical Summary

Problems solved by technology

This piezoelectric gravimeter is a relative gravity measuring instrument, which can overcome the limitations of existing gravimeters such as bulky size, long measurement time, harsh measurement conditions, and expensive equipment; it can also overcome the limitations of traditional piezoelectric acceleration sensors that cannot measure Limitations of Zero-Frequency Earth's Gravitational Acceleration

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