Sensor Evaluation Device for Vehicle Target Recognition
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Solution Overview
Problem
The performance of sensors mounted on vehicles is influenced by their mounting position, weather conditions, and type, necessitating evaluation under operational environments to determine optimal mounting configurations.
Innovation Solution
A sensor evaluation device that detects and records specific events such as unrecognized or misrecognized targets by multiple sensors, allowing for the analysis and evaluation of sensor performance, comprising a specific event detecting unit and a recording unit, connected to a microcomputer and input/output devices for real-time monitoring and logging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to improve recognition accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system segments the sensor evaluation function by dividing events into two distinct categories: unrecognized events (where the first sensor misses a target detected by the second sensor) and misrecognized events (where the first sensor incorrectly identifies a target). This segmentation allows independent analysis and evaluation of different failure modes, improving measurement precision while maintaining manageable system complexity through structured event classification.
2Reliability
If sensor evaluation under operational environments is performed to determine optimal mounting configurations, then reliability is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary classification of sensor events into unrecognized and misrecognized categories during operational use. By continuously collecting and categorizing event data in real-world conditions, the system prepares evaluation data in advance, enabling subsequent analysis to quickly determine optimal mounting configurations without requiring extensive additional testing time.
Solution Approach 2:
The system implements continuous feedback by monitoring sensor performance during operation, comparing first sensor detections with second sensor detections, and recording discrepancies. This real-time feedback mechanism allows the system to accumulate evaluation data during normal operation, reducing the need for separate dedicated evaluation periods and thereby minimizing time loss while improving reliability.
Data Source
AI summary
A sensor evaluation device evaluates a first sensor mounted on a sensor-mounting object. The sensor evaluation device is provided with a specific event detecting unit, and a recording unit. The specific event detecting unit detects a specific event which is at least one of (a) an unrecognized event where a second sensor mounted on the sensor-mounting object recognizes a first target whereas the first sensor does not recognize the first target, and (b) a misrecognized event where the first sensor recognizes a second target whereas the second sensor does not recognize the second target. The recording unit records information on the specific event when detecting the specific event.