Construction Equipment AVM Controller Failure Switching
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Solution Overview
Problem
Construction equipment screen display systems fail to provide camera images to users in emergency situations due to failures within the system, potentially leading to safety accidents.
Innovation Solution
A screen display system for construction equipment that includes multiple cameras, an AVM controller, an additional information synthesizer, a main display, and an auxiliary display, which selects and routes camera or AVM image data based on failure flags to ensure image data is always provided to the user, even in emergency modes, using a switching circuit to determine data distribution among displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the AVM controller processes camera image data through multiple steps to generate AVM image data, then the image quality and additional information are improved, but the system reliability deteriorates when a failure occurs in any processing step
Solution Approach 1:
The system stores both the original camera image data and the processed AVM image data before display. When a failure is detected in the additional information synthesizer or other processing components, the system can immediately switch to displaying the pre-stored camera image data, avoiding the need to reprocess images and ensuring continuous operation.
Solution Approach 2:
The display controller acts as an intermediary that receives both camera image data and AVM image data, and intelligently selects which data to display based on the operational status of various components. This mediator enables seamless switching between different data sources to maintain system reliability.
2Adaptability or versatility
If the system uses a complex processing chain with AVM controller, additional information synthesizer, and multiple displays, then the functionality and information quality are improved, but the complexity of the system increases
Solution Approach 1:
The system divides the display functionality into independent segments: the AVM controller processes images, the additional information synthesizer adds data, and the display controller manages output to multiple displays. This segmentation allows each component to perform its specific function while the display controller coordinates them, making the complex system more manageable and maintainable.
Solution Approach 2:
The display controller is designed to handle multiple types of image data (both camera image data and AVM image data) and can output to different displays (main display and auxiliary display) based on system needs. This multi-functionality reduces the need for separate dedicated components for each function.
3Reliability
If the system monitors multiple failure flags to ensure reliability, then the safety is improved, but the complexity of failure detection and response increases
Solution Approach 1:
The system combines multiple failure detection functions into a single display controller that monitors the operational status of the AVM controller, additional information synthesizer, and other components. By centralizing the failure detection and response logic in one component, the system maintains high safety through comprehensive monitoring while reducing the overall complexity compared to having separate detection systems for each component.
Data Source
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AI summary
A screen display system of construction equipment includes a plurality of cameras configured to generate camera image data, an AVM controller configured to generate an AVM (Around View Monitor) image data based on the camera image data and select at least one of the AVM image data and the camera image data as a first image data based on a first failure flag, an additional information synthesizer configured to output second image data based on the first image data, and a main display configured to display an image corresponding to one of the first image data and the second image date based on a second failure flag representing whether or not a failure occurs in the additional information synthesizer.