Photoelectric Scanner Motor With Magnetic Coil Coupling
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Solution Overview
Problem
The existing photoelectric scanning apparatuses for autonomous vehicles have a complex structure due to numerous components, leading to high assembly tolerance and increased failure probabilities in the power and signal transmission assemblies.
Innovation Solution
A simplified structure for the photoelectric scanning apparatus using a motor with a wireless transmission assembly that eliminates the need for attachment plates, fixed shafts, and rotating bodies, utilizing magnetic coupling between coils for power and signal transmission directly on the rotor and base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separable motor with fixed shaft and rotating body is used, then the motor can drive the radar to rotate, but the structure becomes complex and assembly tolerance accumulates
Solution Approach 1:
The patent combines the fixed shaft and rotating body into an integrated structure where the stator and rotor are directly coupled without separate connection components. This merging eliminates multiple assembly interfaces, reducing structural complexity and accumulated tolerance, thereby improving coupling reliability.
Solution Approach 2:
The patent removes the fixed shaft and rotating body components from the traditional separable motor structure. By extracting these intermediate components, the design achieves direct magnetic coupling between stator and rotor, simplifying the structure and reducing assembly tolerance accumulation.
2Reliability
If multiple attachment plates and transmission rings are used for power and signal transmission, then wireless transmission is achieved, but the number of components increases and assembly complexity increases
Solution Approach 1:
The patent merges the power transmission and signal transmission functions into a unified magnetic coupling system. By using the same stator-rotor magnetic field interaction for both power and control signals, the design eliminates separate transmission assemblies, reducing component count while maintaining transmission reliability.
Solution Approach 2:
The magnetic coupling system between stator and rotor serves multiple functions simultaneously: it provides mechanical rotation drive, transmits power wirelessly, and transmits control signals wirelessly. This multi-functionality reduces the number of dedicated components needed for each function.
3Ease of manufacture
If a separable motor structure with multiple assembly steps is used, then manufacturing flexibility is maintained, but assembly tolerance accumulates and failure probability increases
Solution Approach 1:
The patent merges multiple assembly steps into a simplified integration process where the stator and rotor are directly coupled. This reduces the number of assembly operations from multiple separate component installations to a single integrated assembly, minimizing accumulated tolerance while maintaining manufacturing flexibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the overall volume, assembly complexity, and failure probability of the apparatus while ensuring reliable wireless transmission, thereby enhancing the reliability and efficiency of the scanning system.
Implementation Method 1
Wireless signal and/or power transmission is implemented through magnetic coupling between the first coil and the second coil
Data Source
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AI summary
Embodiments of this application provide a photoelectric scanning apparatus, a motor, and an autonomous vehicle, and relate to the field of photoelectric scanning device technologies, to simplify a structure of a photoelectric scanning apparatus and reduce a failure probability of coupling between coils in a wireless transmission assembly of the photoelectric scanning apparatus. The photoelectric scanning apparatus includes a motor, a wireless transmission assembly, and an environment detection apparatus. The motor includes a stator, a rotor, and a base, the stator is fixedly mounted on the base, and the rotor is sleeved on the stator. The wireless transmission assembly includes a first coil and a second coil, the first coil and the environment detection apparatus are both mounted on the rotor, the first coil is electrically connected to the environment detection apparatus, and the second coil is mounted on the base. The second coil is electrically connected to a control host. Wireless signal and/or power transmission is implemented between the control host and the environment detection apparatus through magnetic coupling between the first coil and the second coil.