Sensor Mounting Bracket With Backing Plate for Vehicle Vibration Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Autonomous and semi-autonomous vehicle sensors, particularly localization sensors like IMUs, are adversely affected by low-frequency vibrations from vehicle movements and internal components, leading to reduced accuracy and functionality.
Innovation Solution
A vibration mitigation system comprising a bracket and a backing plate secured to a sheet metal structure using fasteners, where the backing plate is made of a rigid material like aluminum to dampen vibrations before they reach the sensors, and additional noise-reducing materials can be used between the backing plate and the sheet metal for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If sensors are positioned on the vehicle to enable autonomous control, then the vehicle can operate autonomously, but the sensors are exposed to vibrations and shock that reduce accuracy
Solution Approach 1:
The mounting system is divided into separate functional components: a bracket that attaches to the vehicle structure, a backing plate that provides vibration damping, and fasteners that secure the assembly. This segmentation allows each component to be optimized for its specific function while working together to protect the sensor.
Solution Approach 2:
The backing plate serves as an intermediary element between the vehicle structure and the sensor bracket. It absorbs and dampens vibrations from the vehicle before they reach the sensitive sensor, acting as a protective mediator that isolates the sensor from harmful mechanical disturbances.
2Ease of manufacture
If sensors are mounted directly to the vehicle structure, then installation is simple, but vibrations from the vehicle structure directly affect sensor performance
Solution Approach 1:
The bracket and backing plate are pre-assembled into a integrated mounting assembly before installation on the vehicle. This preliminary assembly ensures proper alignment and vibration isolation configuration, making the final installation straightforward while guaranteeing that the sensor is protected from vibrations from the outset.
3Stability of the object's composition
If the sheet metal structure is used as the mounting surface, then it provides a stable base, but it transmits low-frequency vibrations to the sensors
Solution Approach 1:
The mounting system combines different materials with complementary properties: the bracket provides structural attachment, the backing plate (made of vibration-damping material) absorbs low-frequency vibrations, and the fasteners secure the assembly. This composite approach maintains mounting stability while filtering harmful vibrations.
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
Effectively reduces low-frequency vibrations, improving the accuracy and reliability of localization sensors by enhancing the structural rigidity of the sheet metal structure and isolating sensors from harmful noise, thus maintaining optimal sensor performance in adverse conditions.
Implementation Method 1
a backing plate where the bracket is disposed adjacent to the first major surface of the sheet metal structure, where the backing plate is disposed adjacent to the second major surface of the sheet metal structure, and where two or more fasteners secure the backing plate to the bracket through the sheet metal structure
Data Source
AI summary
Provided herein is a system and method for vibration mitigation at a sensor of a vehicle. Some systems include: at least one sensor; a bracket configured to support the at least one sensor; a sheet metal structure having a first major surface along which the sheet metal structure extends, and a second major surface opposite the first major surface; and a backing plate where the bracket is disposed adjacent to the first major surface of the sheet metal structure, where the backing plate is disposed adjacent to the second major surface of the sheet metal structure, and where two or more fasteners secure the backing plate to the bracket through the sheet metal structure.