Vehicle Sensor Fault Detection Using Roadside Majority Decision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing systems for automatic driving vehicles require multiple sensors with overlapping detection targets, leading to redundancy and increased costs for abnormality detection.
Innovation Solution
A vehicle control device that determines sensor abnormalities through majority decision using inter-vehicle distance data from both internal and external sensors, without the need for additional sensors, by comparing data from a camera and radar with data from external sources via vehicle-to-vehicle communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three sensors with overlapping detection targets are installed on the own vehicle for majority decision, then sensor abnormality detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces external sensors installed on roadside infrastructure as intermediary elements to participate in the majority decision process. These external sensors act as mediators that provide additional detection results without being part of the own vehicle's sensor system, enabling abnormality detection while avoiding the complexity of installing three onboard sensors.
Solution Approach 2:
The patent transitions from a single-vehicle sensor system to a multi-dimensional system that includes both onboard and roadside sensors. By adding the spatial dimension of roadside installation, the system achieves three-sensor majority decision capability without increasing the number of sensors on the own vehicle.
2Reliability
If three sensors with overlapping detection targets are installed on the own vehicle for majority decision, then sensor abnormality detection reliability is improved, but cost increases
Solution Approach 1:
The patent introduces external sensors installed on roadside infrastructure as intermediary elements to participate in the majority decision process. These external sensors act as mediators that provide additional detection results without being part of the own vehicle's sensor system, enabling abnormality detection while avoiding the complexity of installing three onboard sensors.
Solution Approach 2:
The external sensors installed on roadside infrastructure serve multiple functions: they provide detection data for majority decision, enable abnormality detection for multiple passing vehicles, and reduce the burden on individual vehicle sensor systems. This multi-functionality reduces overall system cost.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention provides a vehicle control device capable of performing abnormality determination of a sensor by majority decision without increasing the number of sensors in a vehicle. A vehicle control device 18 is for a vehicle 1 including a camera 17 and a radar 24 configured to detect a predetermined detection target; and a communication device 26 configured to communicate with outside. The vehicle control device 18 determines whether or not there is an abnormality in the camera 17 and the radar 24 on the basis of: first acquisition means configured to acquire information on the predetermined detection target from each of the camera 17 and the radar 24; second acquisition means configured to acquire information, on the predetermined detection target, detected by a road-to-vehicle communication device 29 external to an own vehicle and received by the communication device 26; information from the camera 17 and the radar 24 acquired by the first acquisition means; and information from the road-to-vehicle communication device 29 external to the own vehicle acquired by the second acquisition means.