Vehicle Camera Malfunction Alerts Using Startup Memory Recall
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Solution Overview
Problem
Existing technologies struggle to promptly determine and notify drivers of non-temporary malfunctions in on-board vehicle cameras, such as foreign object adhesion, before vehicle operation begins, leading to potential safety risks and inconvenience.
Innovation Solution
A notification device and system that utilize stored malfunction information from previous vehicle disembarkation to determine non-temporary camera malfunctions during startup, reducing processing time by using a steady-state determination unit and a start-up determination unit to provisionally notify drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses steady-state determination to detect camera malfunctions, then the accuracy of malfunction detection is improved, but the response time is delayed because the system cannot determine malfunctions during the startup period
Solution Approach 1:
The system performs preliminary actions by storing malfunction information in non-volatile memory during the steady-state operation period, then retrieves and utilizes this stored information during the startup period. This allows the system to make malfunction determination decisions during startup without waiting for steady-state conditions, thus resolving the time delay problem while maintaining detection accuracy.
2Reliability
If the system waits for steady-state conditions to determine camera malfunction, then the reliability of determination is improved, but the driver is not notified in time before vehicle operation begins
Solution Approach 1:
The system performs preliminary determination of malfunction status during steady-state operation and stores the results in non-volatile memory. During startup, the system retrieves this pre-determined information and makes immediate notification decisions, ensuring both reliable determination and timely driver notification before vehicle operation begins.
Solution Approach 2:
The system creates a copy of the malfunction determination results in non-volatile memory that persists across power cycles. This copied information can be retrieved during startup without re-performing the full steady-state determination, enabling timely notifications while maintaining the reliability of the original determination process.
3Difficulty of detecting and measuring
If the system continuously monitors camera images for malfunction, then the detection capability is improved, but the processing time during startup is excessive
Solution Approach 1:
The system performs the image acquisition and malfunction determination actions during steady-state operation in advance, storing the results in non-volatile memory. During startup, the system only needs to retrieve the stored information, significantly reducing processing time while maintaining the same detection capability.
Solution Approach 2:
The system extracts the essential malfunction determination results from the continuous monitoring process and stores them in non-volatile memory. During startup, only this extracted information is processed, separating the heavy computational workload from the startup period and reducing startup processing time while preserving detection capability.
Data Source
AI summary
A notification device includes an image acquisition unit that acquires images, a steady-state determination unit that determines whether a non-temporary malfunction state occurs in the camera system, a memory processing unit that stores malfunction information in a storage area, a start-up determination unit that determines whether the non-temporary malfunction state exists during the period until the steady-state determination unit is able to determine the occurrence of the non-temporary malfunction state, and an alarm output process processing unit that outputs an alarm when each determination unit determines that the non-temporary malfunction state exists. The start-up determination unit includes a previous information acquisition unit that acquires the malfunction information stored in the storage area when the control unit of the vehicle was turned off from a previous power-on state, and a provisional determination unit that determines that the non-temporary malfunction state exists if the previous information obtained by the previous information acquisition unit indicates that the non-temporary malfunction state exists, and determines that the non-temporary malfunction state does not exist if the previous information obtained by the previous information acquisition unit indicates that the non-temporary malfunction state does not exist.