A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure
The most permanent magnets in current electromagnetic velocity sensors are magnet cylinders that have been axially magnetized, with magnetic boots changing the propagation direction of the magnetic induction lines of the magnet cylinders. However, the magnetic field generated by the magnet cylinders...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/18/6925 |
| _version_ | 1797482572790366208 |
|---|---|
| author | Xiao Zhou Yangfan Ruan Xingang Mou Yuhao Yuan Yi He |
| author_facet | Xiao Zhou Yangfan Ruan Xingang Mou Yuhao Yuan Yi He |
| author_sort | Xiao Zhou |
| collection | DOAJ |
| description | The most permanent magnets in current electromagnetic velocity sensors are magnet cylinders that have been axially magnetized, with magnetic boots changing the propagation direction of the magnetic induction lines of the magnet cylinders. However, the magnetic field generated by the magnet cylinders is not fully utilized, which leads to uneven magnetic field intensity of the working air-gap and high magnetic field intensity of the nonworking air-gap. We propose a novel dual-magnet structure (DM) mainly consisting of two magnet loops that are magnetized radially and a magnetic conductive shaft, adopting a concentric nested configuration. The dual-magnet structure can make the magnetic induction lines enter the working air-gap directly from the magnet and increase the effective magnetic field, which is perpendicular to the coils in the working air-gap. This design can further improve the sensitivity of a velocity sensor and enhance its ability to detect weak signals in microtremor exploration. The validity of the dual-magnet structure has been established by numerical simulations and verified by experiments. The results reveal that the magnetic field intensity is increased by 29.18% and the sensitivity is improved by 23.9%, when the total volume and material of the magnet are unchanged. The full utilization of the material is achieved without increasing the complexity of the structure. |
| first_indexed | 2024-03-09T22:34:20Z |
| format | Article |
| id | doaj.art-f0352db0bbab4ff9884c876a18f19246 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T22:34:20Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f0352db0bbab4ff9884c876a18f192462023-11-23T18:51:26ZengMDPI AGSensors1424-82202022-09-012218692510.3390/s22186925A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet StructureXiao Zhou0Yangfan Ruan1Xingang Mou2Yuhao Yuan3Yi He4School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, ChinaIntelligent Transport Systems Research Center, Wuhan University of Technology, Wuhan 430063, ChinaThe most permanent magnets in current electromagnetic velocity sensors are magnet cylinders that have been axially magnetized, with magnetic boots changing the propagation direction of the magnetic induction lines of the magnet cylinders. However, the magnetic field generated by the magnet cylinders is not fully utilized, which leads to uneven magnetic field intensity of the working air-gap and high magnetic field intensity of the nonworking air-gap. We propose a novel dual-magnet structure (DM) mainly consisting of two magnet loops that are magnetized radially and a magnetic conductive shaft, adopting a concentric nested configuration. The dual-magnet structure can make the magnetic induction lines enter the working air-gap directly from the magnet and increase the effective magnetic field, which is perpendicular to the coils in the working air-gap. This design can further improve the sensitivity of a velocity sensor and enhance its ability to detect weak signals in microtremor exploration. The validity of the dual-magnet structure has been established by numerical simulations and verified by experiments. The results reveal that the magnetic field intensity is increased by 29.18% and the sensitivity is improved by 23.9%, when the total volume and material of the magnet are unchanged. The full utilization of the material is achieved without increasing the complexity of the structure.https://www.mdpi.com/1424-8220/22/18/6925dual magnetvelocity sensorsensitivitymagnetic field intensity |
| spellingShingle | Xiao Zhou Yangfan Ruan Xingang Mou Yuhao Yuan Yi He A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure Sensors dual magnet velocity sensor sensitivity magnetic field intensity |
| title | A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure |
| title_full | A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure |
| title_fullStr | A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure |
| title_full_unstemmed | A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure |
| title_short | A Design of Electromagnetic Velocity Sensor with High Sensitivity Based on Dual-Magnet Structure |
| title_sort | design of electromagnetic velocity sensor with high sensitivity based on dual magnet structure |
| topic | dual magnet velocity sensor sensitivity magnetic field intensity |
| url | https://www.mdpi.com/1424-8220/22/18/6925 |
| work_keys_str_mv | AT xiaozhou adesignofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yangfanruan adesignofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT xingangmou adesignofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yuhaoyuan adesignofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yihe adesignofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT xiaozhou designofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yangfanruan designofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT xingangmou designofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yuhaoyuan designofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure AT yihe designofelectromagneticvelocitysensorwithhighsensitivitybasedondualmagnetstructure |