Vehicle Speed Control for Lateral Sensor Detection
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Solution Overview
Problem
Modern vehicles equipped with Advanced Driver Assistance Systems (ADAS) face challenges due to limited sensor fields of view, leading to lateral non-detection regions that increase costs and complexity, and pose packaging challenges, making it difficult to detect objects outside the sensor coverage.
Innovation Solution
A controller that generates a vehicle speed control signal to vary the vehicle's speed and bring objects within the lateral non-detection region into the detection zone using existing sensors, by processing object detection signals from cameras, LIDAR, or radar sensors, thereby enhancing situational awareness without the need for additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional sensors are mounted on the vehicle to detect objects in lateral directions, then the detection coverage is improved, but the cost and complexity of the ADAS system increases
Solution Approach 1:
The existing forward and rearward sensors are made multi-functional by utilizing them not only for their primary detection directions but also for detecting objects in lateral non-detection regions through vehicle speed variation maneuvers, eliminating the need for dedicated lateral sensors
Solution Approach 2:
The vehicle speed is varied as a parameter to enable the existing sensors to detect objects in lateral regions. By changing the vehicle speed and performing specific maneuvers, objects that were previously undetectable in lateral non-detection regions become visible to the forward and rearward sensors
2Reliability
If additional sensors are mounted on the vehicle to detect objects in lateral directions, then the detection coverage is improved, but packaging challenges affect the vehicle design
Solution Approach 1:
The existing forward and rearward sensors are made multi-functional by utilizing them not only for their primary detection directions but also for detecting objects in lateral non-detection regions through vehicle speed variation maneuvers, eliminating the need for dedicated lateral sensors
3Reliability
If the vehicle speed is varied to bring objects into the detection zone, then the detection capability in lateral regions is improved, but the control system complexity increases
Solution Approach 1:
The vehicle's existing motion control system serves the additional function of enabling object detection in lateral regions by automatically varying speed according to the controller's instructions, without requiring separate dedicated actuation systems
Solution Approach 2:
The controller continuously monitors object detection signals and vehicle speed, using feedback loops to determine when speed variation is needed and when to return to normal cruising speed, creating an adaptive detection system
Data Source
AI summary
A controller for controlling a vehicle, the vehicle comprising a detection means having a detection zone and a lateral non-detection region, the controller comprising: an input for receiving an object detection signal from the detection means; a processor arranged to generate a control signal for controlling a vehicle system in dependence on the received object detection signal; an output for outputting the control signal wherein the processor is arranged to generate a vehicle speed control signal to vary a vehicle speed about a current vehicle speed in order to bring an object within the lateral non-detection region into the detection zone of the detection means; and the output is arranged to output the vehicle speed control signal.