Linear displacement induction measuring device for thin-wall cylindrical component
A thin-walled cylinder and linear displacement technology, which is applied in the field of sensors, can solve the problems of reduced measurement accuracy and the inability of magnetic displacement sensors to achieve linear translation measurement, and achieve the effects of high measurement accuracy, good dust-proof and anti-corrosion performance, and convenient production and installation.
Pending Publication Date: 2021-05-14
SUZHOU HAIZHO ELECTRONIC SCI & TECH LTD CO
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Problems solved by technology
Due to the splicing of two non-continuous magnets, the magnetic field generated around the entire magnetic unit appears non-uniform, thereby reducing the measurement accuracy, usually + / -3.5% (full scale)
And due to the size limitation of the magnet material, and the magnetic induction device must directly face the magnet, the magnetic displacement sensor cannot realize the linear translation measurement between the small intervals (<1mm) of 1.5mm thick and thin-walled cylinders
Method used
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[0023] A thin-walled cylindrical component linear displacement induction measurement device, which includes a first thin-walled cylindrical component 10, a second thin-walled cylindrical component 11 and a linear displacement induction sensor, the linear displacement induction sensor includes an outer shell, a chip 8, a measuring body And the induction sheet 4, the induction sheet is an arc-shaped thin sheet stamped from a metal material, the induction sheet is fixedly installed on the outer wall of the first thin-walled cylindrical part, and the outer shell is an L-shaped structure, including an integrally formed chip installation Part 1 and measuring body mounting part 3, the chip mounting part is fixedly mounted on the top of the second thin-walled cylindrical part, the chip is clamped on the chip mounting part, and the measuring body mounting part is fixedly mounted on the second thin-walled cylinder On the inner wall of the shaped part, the measuring body is a flexible cir...
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The invention relates to the technical field of sensors and particularly relates to a linear displacement induction measuring device for a thin-wall cylindrical component. The device comprises a first thin-walled cylindrical component, a second thin-walled cylindrical component and a linear displacement sensing sensor, wherein the linear displacement sensing sensor comprises an outer shell, a chip, a measuring body and a sensing sheet; the induction sheet is an arc-shaped sheet and is fixedly installed on an outer wall of the first thin-wall cylindrical component, the outer shell comprises a chip installation part and a measurement body installation part, the chip installation part is fixedly installed on the top of the second thin-wall cylindrical component, the measurement body installation part is fixedly installed on an inner wall of the second thin-wall cylindrical component, and the measurement body is a flexible circuit board; and the flexible circuit board and the measuring body mounting part are integrated through low-pressure injection molding. The device provided by the invention is simple in structure, small and thin in size, light in weight, convenient to manufacture and install, capable of accurately measuring the linear displacement between two thin-walled parts with a relatively small distance, and good in dustproof and anti-corrosion performance.
Description
technical field [0001] The invention relates to the technical field of sensors, in particular to a linear displacement sensing measuring device for a thin-walled cylindrical part. Background technique [0002] At present, the known non-contact linear displacement sensor adopts a magnetic measurement method. For the application of measuring displacement > 35mm, a magnetic material unit composed of two 5mm×5mm discontinuous cuboid magnets is usually used. Due to the splicing of two non-continuous magnets, the magnetic field generated around the entire magnetic unit appears inhomogeneous, thereby reducing the measurement accuracy, usually the accuracy is + / -3.5% (full scale). And due to the size limitation of the magnet material and the fact that the magnetic sensing device must directly face the magnet, the magnetic displacement sensor cannot achieve linear translation measurement between small intervals (<1mm) of 1.5mm thick and thin-walled cylinders. Contents of the ...
Claims
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Login to View More IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 朱卫盖彦青杜军李建军江平新
Owner SUZHOU HAIZHO ELECTRONIC SCI & TECH LTD CO