Dual-Display Sign Information System for Vehicle Driver Comfort
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Solution Overview
Problem
Existing vehicle sign information display systems experience frequent switching of display content due to changes in camera image quality, leading to driver discomfort.
Innovation Solution
A dual-display system with a first sign information detector for external data and a second for internal data, controlled by a circuit to prevent frequent switching by hiding or displaying information based on detector status, ensuring consistent display location and anomaly detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system switches display content based on camera image quality conditions, then the system can adapt to different detection scenarios, but the display content switches frequently causing driver discomfort
Solution Approach 1:
The system performs preliminary anomaly determination to detect camera failures before they affect display switching. By checking detector status in advance and establishing a fixed display hierarchy (first display for normal operation, second display for anomaly cases), the system prevents frequent switching while maintaining adaptability to different operational states
Solution Approach 2:
Instead of switching displays based on image quality conditions as in conventional systems, this invention inverts the logic by using a single fixed display (first display) for normal operation and only switching to the second display when an anomaly is detected. This reverses the conventional approach of frequent switching based on conditions to a stable display with exception-based switching
2Device complexity
If the system uses only camera-based detection, then the system structure is simple, but the system cannot detect sign information when camera anomaly occurs
Solution Approach 1:
The system merges two detection approaches (camera-based external detection and map information-based internal detection) into a unified system. The first detector uses camera images for sign recognition while the second detector uses map information as backup, combining both methods to achieve higher reliability without significantly increasing system complexity
Solution Approach 2:
The system prepares backup detection capabilities in advance by incorporating the second sign information detector that uses map information. This cushioning mechanism ensures that when the camera-based first detector fails, the system can immediately switch to the pre-prepared alternative detection method, maintaining detection reliability
3Loss of information
If the system displays sign information from both detectors simultaneously, then information availability is maintained, but display location switching causes driver discomfort
Solution Approach 1:
The system segments the display function into two separate displays with distinct roles: the first display shows sign information from the first detector during normal operation, while the second display serves as backup. This segmentation allows information to be maintained in both detectors while presenting it through a single stable display location, preventing driver discomfort from switching
Solution Approach 2:
The control circuit acts as an intermediary that manages information flow between the two detectors and the display system. It determines anomaly status and controls which detector's information is displayed, mediating between the need for information availability and the need for stable display location to prevent driver discomfort
Data Source
AI summary
If a first sign information detector 62 is normal, a first display 94 displays sign information detected by the first sign information detector 62, in accordance with an instruction from a control circuit 70. At this time, a second display 64 hides sign information in accordance with an instruction from the control circuit 70. On the other hand, if the first sign information detector 62 is abnormal, the first display 94 hides the sign information in accordance with an instruction from the control circuit 70. At this time, the second display 64 displays sign information detected by the second sign information detector 64, in accordance with an instruction from the control circuit 70.