A magnetic liquid acceleration sensor

Abstract

The invention discloses a magnetic liquid acceleration sensor, belonging to the technical field of inertia sensors and solving the problems that the weight is heavy, the measuring range is short, the sensor fails due to the fact that magnet is demagnetized because of long-time use and the stability of the sensor is reduced due to the fact that magnetic particles are aggregated because of long-time work failure in a traditional magnetic liquid acceleration sensor are solved. A cylindrical magnet (5) of the magnetic liquid acceleration sensor is a rubber magnet; the cylindrical magnet (5) is placed in a casing (2); magnetic liquid is filled into the casing (2) and is attached to two axial ends of the cylindrical magnet and enables the cylindrical magnet to suspend; a left end cover (1) and a right end cover (6) are respectively in threaded connection with two ends of the casing; a first coil (3) and a second coil (4) are respectively wound in two annular grooves of the casing; the first coil is connected with the second coil in a differential manner; the diameter of an inner cavity of the casing is reduced from the center to the left side and the right side; a taper angle is 2 alpha; the lateral surface of the inner cavity of the casing takes an axis as a symmetrical shaft; and a first groove and a second groove are formed along the axis.

Description

technical field [0001] The invention relates to the technical field of inertial sensors, in particular, the invention relates to a novel magnetic liquid acceleration sensor. Background technique [0002] Acceleration sensors are second only to pressure sensors in terms of sales volume, and are widely used in various fields such as transportation, biomedicine, oil exploration, and military industry. With the continuous development of science and technology, people's demand for high-performance acceleration sensors with high sensitivity, high reliability, and high resolution is increasing. Compared with traditional acceleration sensors, magnetic liquid acceleration sensors have no mechanical wear and a small friction coefficient, so they have higher sensitivity and reliability. In addition, it also has the advantages of low energy consumption, low price, and good low frequency response. The structure of the existing magnetic liquid acceleration sensor, such as US2007 / 0214889...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing magnetic liquid acceleration sensor has a short range and heavy weight, and long-term use still has the demagnetization of the permanent magnet to cause the performance of the sensor to decline or even fail, and the sensor stability caused by the aggregation of magnetic particles when it is not working for a long time decline

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