Vehicle Navigation Control via Speed and Risk Assessment
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Solution Overview
Problem
Existing vehicle control systems face challenges in balancing safety and convenience by disabling navigation system operations during travel, which can lead to inconvenience when no passenger is present and may compromise safety due to complex mechanisms and incorrect operator identification.
Innovation Solution
A vehicle control apparatus with an equipment operation disabling module, outside information acquisition module, risk recognition module, driving operation assistance module, and equipment operation enabling module, utilizing imaging devices, vehicle state detection, and controllers to assess risks and enable navigation system operation during safe driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the navigation system operation is disabled during vehicle travel to ensure safety, then safety is improved, but convenience is worsened because the driver cannot change destination or route while traveling
Solution Approach 1:
The patent applies dynamics by making the operation enable/disable state changeable based on detected conditions. The navigation system operation is dynamically adjusted: disabled when the vehicle is traveling above a threshold speed, but enabled when the vehicle is stopped or moving below the threshold, thus adapting the system state to current operating conditions to balance safety and convenience
Solution Approach 2:
The patent changes the operational parameter of the navigation system based on vehicle speed parameter. When vehicle speed exceeds a predetermined threshold, the navigation operation is disabled; when speed falls below the threshold, operation is enabled. This parameter-based control resolves the contradiction by linking system accessibility to a measurable physical parameter (vehicle speed)
2Ease of operation
If passenger detection mechanisms are added to enable navigation operation when no passenger is present, then convenience is improved, but device complexity increases due to the need for complex detection mechanisms
Solution Approach 1:
The patent extracts the passenger detection function from complex specialized mechanisms and replaces it with utilization of existing vehicle sensor systems (speed sensors, stop detection systems) that are already present in modern vehicles. This takes out the need for additional complex detection hardware while achieving the same operational goal
Solution Approach 2:
The patent makes existing vehicle sensors serve multiple functions: they continue to monitor vehicle operation for their primary purpose while also providing data for navigation operation control decisions. This multi-functionality reduces the need for dedicated passenger detection mechanisms, thereby reducing overall system complexity
3Measurement precision
If complex detection mechanisms are used to identify operator status, then operator identification accuracy may be improved, but safety is compromised due to the complexity and potential for incorrect identification
Solution Approach 1:
The patent applies self-service by using the vehicle's own existing operational data and sensor information to determine navigation operation enablement. The system serves itself by utilizing data already collected for vehicle control purposes (speed, stop status) without requiring additional detection mechanisms that could introduce identification errors
Data Source
AI summary
When the speed of a vehicle is not lower than a prescribed value, an operation disabling signal is output from an operation disabling controller to a car navigation system, and the operation of the car navigation system is disabled. However, even when the operation disabling signal is being output to the car navigation system, in the cases where assistance control for a driving operation is being performed on the basis of a risk determination result, and where a prediction result of the risk to the vehicle is that the risk to the vehicle does not increase before a prescribed time elapses, then an operation enabling signal is output from the operation enabling controller to the car navigation system, whereby it becomes possible to operate the car navigation system.