Automotive Compute Mode Switching for Autonomous Driving Load
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Solution Overview
Problem
In automatic driving control systems, the large amount of image data processing required to recognize the vehicle's external environment can lead to heavy loads on the arithmetic operation device, causing deterioration of its functions.
Innovation Solution
An arithmetic operation device for automobiles that includes an arithmetic element, a state detection unit for the arithmetic element, an external device detection unit, a basic traveling function unit, an automatic driving function unit, and a mode selection unit. The mode selection unit switches between a normal mode and a degeneration mode based on the detected state of the arithmetic element and external devices, reducing the load on the device to prevent function deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic driving control is executed with large amount of image data processing, then the automatic driving function is improved, but the arithmetic operation device experiences heavy loads and function deterioration
Solution Approach 1:
The patent implements dynamic mode switching between normal mode and degeneration mode based on real-time detection of arithmetic element state parameters (temperature, voltage). The mode selection unit dynamically adjusts the operational mode to match the current load conditions, allowing the system to transition from full automatic driving control to basic traveling functions when the arithmetic element is under heavy load, thereby preventing function deterioration while maintaining automation when conditions permit
Solution Approach 2:
The patent monitors physical parameters of the arithmetic element (temperature and voltage) and uses these parameter changes to trigger mode transitions. When temperature exceeds a first threshold or voltage amplitude exceeds a second threshold, the system switches from normal mode to degeneration mode, using parameter-based control to balance automation performance with device reliability
2Productivity
If the arithmetic element processes large amounts of data for automatic driving control, then the automatic driving control capability is improved, but the temperature increases and function deteriorates
Solution Approach 1:
The patent employs a feedback mechanism where the arithmetic element state detection unit continuously monitors temperature and voltage parameters, and this detection information is fed back to the mode selection unit. Based on this feedback, the system adjusts its operational mode in real-time, switching to degeneration mode when temperature or voltage thresholds are exceeded, thereby creating a closed-loop control system that prevents thermal runaway and maintains reliable operation
3Extent of automation
If the arithmetic operation device operates in normal mode with both basic traveling function and automatic driving function, then the automation level is improved, but the load on the arithmetic element increases causing function deterioration
Solution Approach 1:
The patent segments the operational functions into two distinct modes: normal mode containing both basic traveling function and automatic driving function, and degeneration mode containing only basic traveling function. This segmentation allows the system to isolate and deactivate the computationally intensive automatic driving function when load conditions warrant, simplifying the operational state to maintain basic functionality while preventing device overload
Data Source
AI summary
An arithmetic operation device for automobiles includes an arithmetic element state detection unit that detects a parameter indicating a state of an arithmetic element, an external device detection unit that detects a use state of a device that affects the parameter, and a mode selection unit that selects one of a normal mode in which both a basic traveling function unit that can execute control related to a basic traveling function and an automatic driving function unit that can execute control related to an automatic driving function and a degeneration mode in which only the basic traveling function unit is operated, and the mode selection unit selects the degeneration mode when the parameter exceeds a threshold or when it is predicted that the parameter exceeds the threshold.