Galvanometer motor and lidar
AssigneeSuteng Innovation Technology Co., Ltd.
InventorCongcong Zhu
Life of this patent
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Abstract
The present application relates to the field of beam scanning technology and provides a galvanometer motor and a LiDAR. The galvanometer motor includes a stator assembly, a rotor assembly, a tunneling magnetoresistance sensor, a first magnet, and a second magnet. The stator assembly includes a housing and a stator body, while the rotor assembly includes a rotating shaft, a rotor magnet, and an angle limiting member. The rotating shaft is rotatably mounted in the housing around a first shaft line, with a gap between the rotor magnet and the stator body. The rotor magnet rotates around the first shaft line under the magnetic field of the stator body. The tunneling magnetoresistance sensor can map the limited angles formed by the first angle and the second angle into finite position codes.
Claims10
A galvanometer motor, comprising:
- a stator assembly, wherein the stator assembly comprises a housing and a stator body, the housing is provided with a rotating limit slot, and the stator body is mounted inside the housing;
- a rotor assembly, wherein the rotor assembly comprises a rotating shaft, a rotor magnet, and an angle limiting member, the rotating shaft is rotatably mounted in the housing around a first shaft line, the rotor magnet is fixedly mounted on the rotating shaft, there is a gap between the rotor magnet and the stator body, the rotor magnet rotates around the first shaft line under an action of a magnetic field of the stator body, the angle limiting member is connected to the rotating shaft, and the angle limiting member is located in the rotating limit slot, so that the rotor assembly rotates between a first angle and a second angle;
- a tunneling magnetoresistance sensor, wherein the tunneling magnetoresistance sensor is mounted on the housing;
- and
- a first magnet and a second magnet, wherein the first magnet and the second magnet are mounted adjacent to each other on the rotating shaft, there is a gap between the first magnet and the second magnet and the tunneling magnetoresistance sensor, a portion of the first magnet and a portion of the second magnet close to the tunneling magnetoresistance sensor are opposite in magnetic pole, and the first magnet and the second magnet rotate with the rotor assembly to move past the tunneling magnetoresistance sensor.
A LIDAR, wherein the LiDAR comprises a galvanometer lens and a galvanometer motor;
- wherein the galvanometer motor comprises:
- a stator assembly, wherein the stator assembly comprises a housing and a stator body, the housing is provided with a rotating limit slot, and the stator body is mounted inside the housing;
- a rotor assembly, wherein the rotor assembly comprises a rotating shaft, a rotor magnet, and an angle limiting member, the rotating shaft is rotatably mounted in the housing around a first shaft line, the rotor magnet is fixedly mounted on the rotating shaft, there is a gap between the rotor magnet and the stator body, the rotor magnet rotates around the first shaft line under an action of a magnetic field of the stator body, the angle limiting member is connected to the rotating shaft, and the angle limiting member is located in the rotating limit slot, so that the rotor assembly rotates between a first angle and a second angle;
- a tunneling magnetoresistance sensor, wherein the tunneling magnetoresistance sensor is mounted on the housing;
- and
- a first magnet and a second magnet, wherein the first magnet and the second magnet are mounted adjacent to each other on the rotating shaft, there is a gap between the first magnet and the second magnet and the tunneling magnetoresistance sensor, a portion of the first magnet and a portion of the second magnet close to the tunneling magnetoresistance sensor are opposite in magnetic pole, and the first magnet and the second magnet rotate with the rotor assembly to move past the tunneling magnetoresistance sensor;
- and
- wherein the galvanometer lens is located outside the housing, and one end of the rotating shaft extends out of the housing and is connected to the galvanometer lens.
Dependencies are inferred from the claim text.