Accelerometer

Abstract

The invention relates to an accelerometer, which comprises an excitation transformer, wherein the primary winding of the excitation transformer is connected with a square wave generator, and the secondary winding of the excitation transformer is connected with a gauge outfit; by a first capacitor, a displacement sensor winding of the gauge outfit is connected with a preamplifier, an adjuster and a power amplifier which are connected in series with one another sequentially; feedback current I(feedback) output by the power amplifier is introduced into one end of a feedback winding of the gauge outfit, and the other end of the feedback winding of the gauge outfit is grounded through a sampling resistor and a second capacitor which are connected in parallel with each other; voltage U0 is output by the sampling resistor and the second capacitor. The gauge outfit comprises high-magnetic-energy-level magnetic steel arranged in magnetic liquid, and a short-circuit sleeve; two ends of the high-magnetic-energy-level magnetic steel are spherically supported by magnetic powder which is magnetically adsorbed in the magnetic liquid; and due to the spherical support, the high-magnetic-energy-level magnetic steel and the short-circuit sleeve are supported in a shell. By the accelerometer, functions of a force generator or a displacement sensor are optimized; and a requirement of a whole machine is met fully.

Description

technical field [0001] The invention relates to the field of measuring devices, in particular to accelerometers. Background technique [0002] The accelerometer has many advantages such as high and low temperature resistance, shock resistance, vibration resistance, high reliability, long life, and high sensitivity. It is an essential measurement tool for oil drilling measurement equipment and well logging equipment. At present, many manufacturers use magnetic liquid levitation accelerometers, but the structural characteristics of the existing magnetic liquid levitation accelerometers can only use permanent magnetic materials with low magnetic energy levels that take into account both hard magnetic properties and soft magnetic properties. Otherwise, it is difficult to achieve The function optimization of the force generator or the displacement sensor, taking both results into consideration cannot further improve the performance of the force generator and the displacement sens...

AI Technical Summary

Problems solved by technology

At present, many manufacturers use magnetic liquid levitation accelerometers, but the structural characteristics of the existing magnetic liquid levitation accelerometers can only use permanent magnetic materials with low magnetic energy levels that take into account both hard magnetic properties and soft magnetic properties. Otherwise, it is difficult to achieve The function optimization of the force generator or the displacement sensor, taking into account the results of both cannot further improve the performance of the force generator and the displacement sensor, and cannot fully meet the needs of the whole machine

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