Vehicle-Mounted Sensor Layout for Wide Coverage Without Redundancy
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Solution Overview
Problem
Conventional vehicle-mounted collection devices are complex in structure, large in size and weight, and suffer from sensor redundancy and overlapping image coverage areas, leading to increased processing burdens and installation difficulties.
Innovation Solution
A vehicle-mounted collection device with a front-view camera, rear-view camera, and laser radar positioned on a midline, optimized for field of view and downtilt based on coverage requirements, along with a synchronization signal board for coordinated data collection and adjustable parameters based on vehicle speed and positioning data, integrated with heat dissipation and shock absorption features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two cameras are disposed in a front-view direction to achieve 180 degrees coverage, then the overall coverage area is improved, but the coverage areas of the two cameras greatly overlap, increasing the burden of subsequent image processing
Solution Approach 1:
The patent extracts and removes the redundant overlapping coverage areas by using only one camera for front-view direction instead of two, thereby maintaining the necessary coverage while eliminating the processing burden caused by duplicate areas
Solution Approach 2:
The patent segments the coverage requirements by assigning different cameras to different directions (front-view, rear-view, side views) with non-overlapping fields of view, so that each camera covers a specific sector without redundancy
2Measurement precision
If four cameras and one or two laser radars are configured to achieve comprehensive coverage, then the collection precision is improved, but the structure becomes complex and the device is large in size and weight
Solution Approach 1:
The patent extracts only the essential sensors needed for the specific application scenario, removing redundant sensors. For example, it uses one front-view camera instead of two, and strategically positions rear-view camera and laser radar to share coverage areas, thereby reducing the total number of sensors while maintaining collection precision
Solution Approach 2:
The patent merges the functions of multiple sensors by positioning the rear-view camera and laser radar to share the same coverage area, allowing one sensor to cover the rear view and the other to provide additional depth information in the same sector, thereby reducing overall device complexity
3Area of stationary object
If sensors are distributed to cover the entire vehicle roof to achieve comprehensive monitoring, then the coverage is improved, but the device is difficult to install and not conducive to large-scale application
Solution Approach 1:
The patent merges multiple sensors into a single integrated housing unit that can be installed as one component on the vehicle roof, rather than distributing individual sensors across the entire roof surface, thereby simplifying installation while maintaining comprehensive coverage
Solution Approach 2:
The patent arranges sensors within a three-dimensional housing structure, utilizing vertical and lateral spacing to achieve wide coverage from a compact footprint, allowing comprehensive monitoring without distributing sensors across the entire roof surface
Data Source
AI summary
The present disclosure relates to vehicle-mounted collection devices and collection systems. In one example vehicle-mounted collection device, a front-view camera, a rear-view camera, and a laser radar are disposed at front and rear ends of a midline extending in a front-to-back direction of a bottom plate of the device, and parameters such as an angle of view, a downtilt, and a horizontal scanning resolution of the front-view camera, the rear-view camera, and the laser radar are determined based on field of view coverage requirements of the device.