Fuel Cell Bus Sensor Obstruction Structure
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Solution Overview
Problem
In fuel cell buses with autonomous driving systems, there is a risk that a hydrogen tank on the roof may detach and strike the vicinity information detection sensor, potentially causing damage and leading to unsafe emergency stops during autonomous driving.
Innovation Solution
An obstruction portion, such as a barrier wall or cover body with reinforced wall portions, is strategically placed between the hydrogen tank and the vicinity information detection sensor on the roof to prevent contact and ensure the sensor's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the hydrogen tank is disposed on the roof together with the vicinity information detection sensor to save space, then the device complexity is reduced, but the reliability deteriorates because the hydrogen tank may detach and strike the sensor
Solution Approach 1:
The roof space is segmented into distinct zones: a first region for the vicinity information detection sensor and a second region for the hydrogen tank. This spatial segmentation prevents the hydrogen tank from contacting the sensor while maintaining compact overall arrangement, thus resolving the contradiction between device complexity and reliability.
Solution Approach 2:
An obstruction portion is introduced as an intermediary element between the hydrogen tank and the vicinity information detection sensor. This obstruction portion acts as a protective barrier that prevents direct contact between the two components, ensuring sensor reliability while allowing both components to be mounted on the roof.
2Reliability
If the obstruction portion is designed as a barrier wall fixed on the roof, then the reliability of preventing hydrogen tank contact is improved, but the device complexity increases
Solution Approach 1:
The obstruction portion is merged with the hydrogen tank assembly structure, forming an integrated unit. The obstruction portion includes a first portion extending from the hydrogen tank and a second portion extending from the roof, creating a unified protective structure that reduces overall device complexity while maintaining reliable protection.
Solution Approach 2:
The obstruction portion utilizes the vertical dimension by extending from the roof downward, creating a three-dimensional protective barrier. This dimensional approach provides effective protection against horizontal movement of the hydrogen tank while minimizing the horizontal footprint and structural complexity.
Data Source
AI summary
An arrangement structure for a vicinity information detection sensor, the arrangement structure comprising: a vicinity information detection sensor provided on a roof of a fuel cell bus; and an obstruction portion provided between the vicinity information detection sensor and a hydrogen tank disposed on the roof, the obstruction portion obstructing the hydrogen tank from coming into contact with the vicinity information detection sensor.