Dual-Sensor Braking Control for Verified Emergency Deceleration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle braking systems struggle with inconsistent sensor evaluation, leading to inaccurate object identification and potential unnecessary emergency braking, posing safety risks to occupants and other vehicles.
Innovation Solution
A vehicle system utilizing two independent sensor systems with overlapping images and evaluation units to identify critical braking situations, initiating different levels of braking forces based on sensor consensus, including parallel processing and diagnostic checks to ensure reliable and tiered responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sensor system is used to identify critical braking situations, then the system complexity is low, but the reliability of object identification deteriorates due to inaccurate or inconsistent sensor evaluation
Solution Approach 1:
The patent applies local quality by assigning different functions and evaluation criteria to different sensor systems. The first sensor system (camera) and second sensor system (lidar) each have specialized evaluation units that process their respective data types with appropriate algorithms, allowing each sensor to operate at its optimal capability while contributing to overall system reliability
Solution Approach 2:
The patent merges multiple independent sensor systems (camera and lidar) into a unified braking control system. The evaluation units from both sensor systems are combined, and their outputs are integrated to control the braking device, creating a more reliable system than either sensor could provide alone
2Measurement precision
If sensor evaluation is performed without verification, then the response time is fast, but the accuracy of critical situation identification deteriorates leading to false emergency braking
Solution Approach 1:
The patent implements preliminary action by having both sensor systems continuously capture environmental data and perform preliminary evaluations even before a critical situation is confirmed. The first evaluation unit processes camera data and the second evaluation unit processes lidar data in parallel, preparing potential braking responses in advance so that when a critical situation is confirmed, braking can be initiated immediately without delay
Solution Approach 2:
The patent uses feedback by having the second sensor system verify the findings of the first sensor system. The evaluation units continuously monitor and cross-check each other's detections, providing feedback loops that confirm or refute potential critical situations, thereby improving identification accuracy while maintaining rapid response through parallel processing
3Reliability
If emergency braking is initiated based on single sensor detection, then the safety response is immediate, but the risk of unnecessary braking increases causing injury or damage
Solution Approach 1:
The patent implements a feedback mechanism where the second sensor system and its evaluation unit verify the detections made by the first sensor system before triggering emergency braking. This cross-verification feedback loop ensures that only genuine critical situations result in braking actions, eliminating false positives while maintaining immediate safety responses for authentic threats
Solution Approach 2:
The system performs preliminary verification by having both sensor systems and their evaluation units continuously monitor and cross-check environmental data before initiating braking. This preliminary action of verification ensures that braking is only triggered when both sensor systems confirm a critical situation, preventing unnecessary braking while maintaining rapid response capability
Data Source
AI summary
A vehicle system for braking a vehicle includes a first sensor system for recording a first image of a vehicle's environment, an evaluation unit for evaluating the first image, a second sensor system for recording a second image of the vehicle's environment, and a second evaluation unit. The first evaluation unit identifies a critical braking situation in the first image and the second evaluation unit identifies a critical braking situation in the second image. The vehicle system initiates braking with a first braking force when a critical braking situation is identified in the first image, initiates braking with a second braking force when a critical braking situation is identified in the second image, and initiates braking with a third braking force when a critical braking situation is identified in both the first and second images, wherein the third braking force is stronger than the first and second braking forces.