Vehicle Sensor Fusion Control for Pitch Angle Changes
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Solution Overview
Problem
Existing vehicle control systems fail to generate accurate sensor fusion data during rapid acceleration, deceleration, or impact, leading to imprecise recognition of surrounding objects and maintenance of inter-vehicle distance due to neglect of pitch angle changes.
Innovation Solution
A vehicle control apparatus that identifies pitch angles of sensors and adjusts the sensor fusion range and error range based on the difference between sensors, storing relevant information and using it to generate sensor fusion data even when pitch angles exceed a reference value, thereby ensuring continuous data generation and accurate object detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sensor fusion data is generated using fixed sensor parameters, then system complexity is reduced, but measurement precision deteriorates during pitch angle changes
Solution Approach 1:
The patent applies dynamics by making the sensor fusion range and error range adjustable based on real-time pitch angle conditions. Instead of using fixed parameters, the system dynamically modifies the sensor fusion range expansion amount and error range expansion amount according to the detected pitch angle, allowing the system to adapt to changing vehicle conditions while maintaining manageable complexity through automated adjustments.
Solution Approach 2:
The patent implements parameter changes by modifying the sensor fusion range and error range parameters based on pitch angle measurements. The system changes these parameters dynamically: when pitch angle exceeds a threshold, the sensor fusion range expansion amount and error range expansion amount are increased, thereby maintaining measurement precision under varying pitch conditions without requiring complete system redesign.
2Measurement precision
If sensor fusion range is expanded to accommodate pitch angle changes, then object detection accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies feedback by continuously monitoring the pitch angle and using this information to adjust the sensor fusion range and error range. The pitch angle detection unit provides feedback to the control unit, which then modifies the sensor fusion parameters accordingly. This closed-loop feedback mechanism improves object detection accuracy under pitch conditions while managing system complexity through automated, rule-based adjustments rather than manual calibration.
3Reliability
If pitch angle compensation is implemented, then reliability of sensor fusion data is improved, but device complexity increases
Solution Approach 1:
The patent implements preliminary action by detecting the pitch angle in advance and proactively adjusting the sensor fusion range and error range before significant detection errors occur. The system uses the pitch angle information to preemptively expand the sensor fusion range and error margins, ensuring reliable object detection even during rapid pitch changes. This preliminary adjustment approach improves reliability while managing complexity through predictive rather than reactive control.
Data Source
AI summary
A vehicle control apparatus includes a sensor device including a first sensor and a second sensor, a memory, and a control device. For example, the vehicle control apparatus identifies a first pitch angle of the first sensor and a second pitch angle of the second sensor, expands a sensor fusion range of the sensor device or an error range of each of the first sensor and the second sensor based on the difference if a difference between the first pitch angle and the second pitch angle exceeds a reference value, and performs sensor fusion on detecting results of the first sensor and the second sensor by considering at least one of the sensor fusion range, the error range, or a combination of the sensor fusion range and the error range.