Mobility Vehicle Sensor Layout to Avoid Rider Interference
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Solution Overview
Problem
Existing electric mobility vehicles face challenges in providing a stable sharing service due to variations in user age, physical condition, and personal items, which affect sensor accuracy and autonomous driving performance, particularly when users' body parts or luggage interfere with detection areas.
Innovation Solution
The electric mobility vehicle is equipped with front, rear, and lower side sensors that emit detection waves to avoid obstacles, with the sensors' placement and field of vision designed to exclude the vehicle's own components and the user's items, ensuring accurate detection and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are placed to cover maximum detection area, then obstacle detection capability is improved, but user's body parts or luggage interfere with detection areas causing false detections
Solution Approach 1:
The detection area is segmented into multiple zones with different sensor placements. Front sensors detect obstacles in the front direction, side sensors detect obstacles in side directions, and lower sensors detect obstacles underneath. This segmentation allows each sensor to cover specific areas without interference from user's body parts or luggage.
Solution Approach 2:
The sensor placement extends into the vertical dimension by positioning sensors at different heights and angles. Lower sensors are placed beneath the seat to detect obstacles underneath, while front and side sensors are positioned at optimal heights. This multi-dimensional arrangement maximizes detection coverage while avoiding interference zones occupied by the user.
2Reliability
If multiple sensors are added to improve detection coverage, then autonomous driving safety is improved, but device complexity increases
Solution Approach 1:
Multiple sensors are merged into a coordinated detection system where front sensors, side sensors, and lower sensors work together. The controller integrates data from all sensors to create a comprehensive view of the environment, improving autonomous driving safety while managing system complexity through unified control.
Solution Approach 2:
The sensor system is designed with multi-functionality where sensors serve multiple purposes. For example, lower sensors not only detect obstacles underneath but also help determine the vehicle's position and orientation. This universal approach improves reliability without proportionally increasing complexity.
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 configuration enhances the accuracy of obstacle detection and autonomous driving, preventing collisions and ensuring safe, smooth movement by minimizing interference from the user's body and personal items within the sensor's field of view.
Implementation Method 1
a lower side sensor capable of emitting a detection wave in a vehicle front direction of the electric mobility vehicle from under a footrest surface for the user seated on the seat or under the mobility body, and the lower side sensor is capable of detecting an object to be avoided located in the vehicle front direction of the electric mobility vehicle by using the detection wave
Implementation Method 2
a front side sensor which is located at a position lower than a seat surface of the seat, and a part of the front wheel or a part of a fender of the front wheel is placed within a field of vision, and which is capable of detecting an object to be avoided existing in a front direction and a side direction of the front wheel
Data Source
AI summary
An electric mobility vehicle on which a user can be seated to ride. The electric mobility vehicle includes a mobility body having a front wheel, a rear wheel, and a seat for the user, a controller provided in the mobility body, and a lower side sensor capable of emitting a detection wave from under a footrest surface for the user seated on the seat or from under the mobility body, the lower side sensor being capable of detecting an object to be avoided located in a vehicle front direction of the electric mobility vehicle by using the detection wave.