Braking Control Profile Adjustment for Downstream Moving Objects
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Solution Overview
Problem
Existing braking control devices cannot adjust vehicle speed deceleration based on the presence of moving objects downstream of the expected stop position, leading to inadequate braking control.
Innovation Solution
A braking control method and device that determines the presence of moving objects in a predetermined region downstream the expected stop position and adjusts the deceleration start position and deceleration decrease position in the vehicle speed profile accordingly, using a processor with detection devices like cameras or radars to generate and apply a vehicle speed profile that ensures safe stopping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the braking control device controls deceleration based only on vehicle speed and passenger count, then the control logic remains simple, but the braking control cannot adapt to moving objects downstream of the stop position
Solution Approach 1:
The system performs preliminary detection of moving objects in the downstream region before the vehicle reaches the stop position. Based on this advance detection, the braking control device pre-adjusts the deceleration profile by changing the deceleration decrease position upstream, ensuring safe stopping without collision while maintaining smooth braking control.
2Reliability
If the deceleration decrease position is shifted upstream when a moving object is detected, then safety is improved, but the braking distance increases
Solution Approach 1:
The braking control device dynamically adjusts the deceleration profile based on real-time detection of moving objects. When a moving object is detected in the downstream region, the system shifts the deceleration decrease position upstream and increases deceleration magnitude. When no moving object is detected, the system maintains the original deceleration profile, optimizing both safety and braking efficiency under different conditions.
3Object-affected harmful factors
If the system detects moving objects and adjusts deceleration accordingly, then collision prevention is improved, but the control system complexity increases
Solution Approach 1:
The braking control device uses detection devices (cameras, radars, or LIDAR) as intermediaries to sense moving objects in the downstream region. The processor integrates this detection information with vehicle speed and stop position data to determine whether to adjust the deceleration profile, effectively mediating between environmental sensing and braking control to prevent collisions.
Data Source
AI summary
A processor of a braking control device determines whether or not a moving object is detected in a predetermined region downstream an expected stop position, and when determining that a moving object is detected in the predetermined region, changes a deceleration decrease position, which is a start position of a deceleration decrease section, upstream relative to that when determining that no moving object is detected in the predetermined region.