Movable Projection Target for Simultaneous Camera and Sensor Evaluation
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Solution Overview
Problem
Conventional vehicle evaluation devices cannot effectively evaluate the functions based on both camera and distance measurement sensors simultaneously, as they require a real road test and struggle to simulate dynamic environments for precise evaluation.
Innovation Solution
A vehicle evaluation device that includes a first projection target capable of changing positions, a first projector for projecting images, and a controller to control the position and image projection, allowing for simultaneous evaluation of camera and distance measurement sensor functions by simulating various environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stationary screen and fixed projector are used for vehicle evaluation, then the device structure is simple, but the ability to simultaneously evaluate camera and distance measurement sensor functions is insufficient
Solution Approach 1:
The projection target is made movable along the optical axis of the projector, transforming a static evaluation setup into a dynamic one. This allows the projection target to change its position, enabling the simulation of objects at different distances from the vehicle, which simultaneously evaluates both camera imaging functions and distance measurement sensor functions.
Solution Approach 2:
The movable projection target serves multiple evaluation functions: it can evaluate camera imaging quality, distance measurement sensor accuracy, and the coordination between these sensors. By changing the projection target's position, the system can simulate various driving scenarios and object distances, making the evaluation device versatile for different sensor evaluation needs.
2Measurement precision
If real road tests are conducted for comprehensive sensor evaluation, then the evaluation precision is high, but the time consumption and cost increase
Solution Approach 1:
Instead of conducting real road tests with actual objects, the invention uses a projector to project images of objects onto a movable projection target. This creates a controllable virtual environment that copies real-world scenarios, allowing precise evaluation of camera and distance measurement sensor functions without the time and cost constraints of real road tests.
Solution Approach 2:
The evaluation setup pre-configures various object images and positions them on the projection target before actual evaluation begins. The projection target can be moved to predetermined positions corresponding to different object distances, allowing comprehensive sensor evaluation to be conducted quickly without needing to encounter various scenarios during real road tests.
3Measurement precision
If the projection target position is changed to simulate different object distances, then the distance measurement sensor evaluation is improved, but the image projection quality may vary
Solution Approach 1:
The system includes a controller that monitors the projection target's position and adjusts the image projection parameters accordingly. When the projection target moves to different positions, the controller modifies the projection settings to maintain optimal image quality, ensuring that both distance measurement evaluation and image projection quality remain high across all evaluation scenarios.
Data Source
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AI summary
A vehicle evaluation device includes a first projection target, a first projector, and a controller. The first projection target enables projection of an image thereon, and is capable of changing positions. The first projector projects an image onto the first projection target. The controller controls the position of the first projection target, and performs control for changing an image to be projected by the first projector according to the position of the first projection target.