Camera Monitor Panning HMI for Commercial Vehicle Turns
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Solution Overview
Problem
Implementing automatic panning features in camera monitor systems for commercial vehicles like tankers and car trailers is challenging due to varying vehicle configurations and operational conditions.
Innovation Solution
A method and apparatus that utilize a human-machine interface (HMI) on a touchscreen display to receive panning commands, allowing manual control of image feeds on multiple displays, and automatically exit panned views based on vehicle properties such as steering angle and speed changes, enhancing user interaction and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic panning features are implemented in CMS, then the field of view is automatically adjusted during turns, but the implementation becomes challenging for certain commercial vehicles like tankers and car trailers
Solution Approach 1:
Instead of using automatic sensor-based panning that fails for certain vehicle types, the patent inverts the approach by providing manual panning controls that allow operators to adjust the field of view themselves, thereby achieving adaptability across all vehicle types including tankers and car trailers
Solution Approach 2:
The system allows operators to self-adjust the camera view using manual controls on the touchscreen display, eliminating the need for complex automatic panning algorithms that must account for diverse vehicle geometries and turning characteristics
2Ease of operation
If manual panning controls are added to CMS, then user control over field of view is improved, but the interface complexity increases
Solution Approach 1:
The panning control is segmented into separate horizontal and vertical slide bars, allowing independent adjustment of each axis. This segmentation simplifies the interaction model compared to diagonal dragging while maintaining full two-dimensional panning capability
Solution Approach 2:
The patent transitions from direct touchscreen dragging (2D gesture) to slide bar controls (1D controls for each axis), changing the dimensional approach to make panning more precise and easier to control, especially for operators wearing gloves or with limited dexterity
3Ease of operation
If panning is enabled during turns, then the driver's area of interest is improved, but the system cannot automatically determine when the turn is complete
Solution Approach 1:
The system continuously monitors steering angle and vehicle speed as feedback signals to detect turn completion. When the steering angle returns to a neutral range and/or speed increases above a threshold, the system automatically determines the turn is complete and adjusts the view accordingly
Solution Approach 2:
The system pre-defines threshold values for steering angle and speed that indicate turn completion. These preliminary setpoints allow the system to automatically recognize when panning should be activated or deactivated without complex real-time analysis
Data Source
AI summary
A method for providing panning for a camera monitor system (CMS) includes displaying image feeds from a plurality of CMS cameras on a plurality of CMS displays. The image feeds depict an environment surrounding a commercial vehicle. The method also includes providing a human-machine interface (HMI) on a touchscreen display, receiving at least one panning command through the HMI, and, based on the at least one panning command, panning the image feed on one of the plurality of CMS displays from a default view to a panned view. A camera monitor system (CMS) is also disclosed.