Smart Key Control Using Radio Wave Intensity at Stationary Locations
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Solution Overview
Problem
Current vehicle control systems with smart key functions lack convenience as they do not automatically stop the smart key function when the user is in a stationary location for an extended period, leading to unnecessary power consumption and potential misuse.
Innovation Solution
A vehicle control device that includes a processor configured to stop the smart key function when the intensity of a radio wave received from a predetermined wireless communication device exceeds a threshold for a predetermined time, automatically disabling the smart key function when the user is in a stationary location, such as home or work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the smart key function is continuously activated to ensure convenient access, then the ease of operation is improved, but the power consumption increases and security risks arise when the vehicle is in stationary locations
Solution Approach 1:
The smart key function dynamically changes its operational state based on detected conditions. The system transitions from an active state (when radio wave intensity is below the threshold) to an inactive state (when radio wave intensity exceeds the threshold for a predetermined time), optimizing both convenience and power consumption according to the vehicle's location context
2Ease of operation
If the smart key function remains active during stationary periods, then the ease of operation is maintained, but the security against unauthorized use deteriorates
Solution Approach 1:
The system continuously monitors radio wave intensity from wireless communication devices and uses this feedback to determine when to activate or deactivate the smart key function. When the radio wave intensity exceeds the threshold for a predetermined time, indicating the vehicle is likely in a stationary location such as home or work, the system deactivates the smart key function to prevent unauthorized use, while restoring it when the condition no longer applies
3Use of energy by moving object
If the smart key function is automatically stopped based on radio wave detection, then the power consumption is reduced and security is improved, but the device complexity increases
Solution Approach 1:
The system uses ambient radio wave signals from wireless communication devices already present in the environment to automatically determine whether the vehicle is in a stationary location. This self-service approach eliminates the need for manual user input or complex external sensors, reducing device complexity while achieving automatic smart key function control based on location context
Data Source
AI summary
A vehicle control device includes a processor including hardware, the processor being configured to: stop a smart key function of a vehicle when a first state in which an intensity of a radio wave received from a predetermined wireless communication device is a threshold or more has continued for a predetermined time.