DISPLACEMENT SENSOR AND MAGNETIC LEVITATION SYSTEM

WIPO Patent Application WO/2023/206018

A1

Provided in the present application are a displacement sensor (1) and a magnetic levitation system. The magnetic levitation system comprises the displacement sensor (1). The displacement sensor (1) comprises: a first magnetic source (11), which is mounted on a moving body, wherein the first magnetic source (11) is used for generating a magnetic field; a substrate (12), which is spaced apart from the first magnetic source (11), wherein the substrate (12) is provided with a central hole (121), and the central hole (121) is used for allowing the moving body to pass therethrough; and a plurality of Hall chips (13), which are respectively attached to the substrate (12), wherein the plurality of Hall chips (13) are distributed around the central hole (121), and each Hall chip (13) can measure the magnetic flux density of the magnetic field at the Hall chip (13), so as to acquire location information of the first magnetic source (11) and the moving body. In the present application, less displacement sensors (1) are used, such that the mounting space occupied by the displacement sensors (1) is reduced; and the present application is also suitable for use in a situation involving leading out a shaft of a rotor (22).

SUN TIANFU (CN)
JIANG FUCHENG (CN)
LIANG JIANING (CN)
LI HUIYUN (CN)

PCT/CN2022/089063

November 02, 2023

April 25, 2022

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SHENZHEN INST ADV TECH (CN)

F16C32/04; G01B7/00

CN109813209A	2019-05-28
CN113376556A	2021-09-10
CN113833755A	2021-12-24
CN113572312A	2021-10-29
US4214539A	1980-07-29

SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)

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