Vehicle Security Control System with Dynamic Immobilizer Logic
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Solution Overview
Problem
Existing vehicle security control systems can disrupt the safety and smooth operation of a stolen vehicle when an unauthorized driver is attempting to drive it, potentially causing safety hazards and traffic disruptions.
Innovation Solution
A vehicle security control system that includes a key providing an ID signal, a display for engine operation information, and communication units for receiving demand signals from a separate device, allowing the system to control engine operation and display information to prevent unauthorized operation without shocking the driver, ensuring the vehicle can be driven without hindering traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station sends a caution signal to an unauthorized driver, then the security control function is improved, but the safety drive and traffic flow are worsened due to shock to the driver
Solution Approach 1:
The patent introduces an intermediary mechanism (the control system that selectively suppresses caution signals) between the base station and the driver. When the vehicle is moving, the system intercepts the caution signal and prevents it from reaching the driver, thereby eliminating the harmful shock while maintaining security control functionality when the vehicle is stationary.
Solution Approach 2:
The patent applies dynamics by making the caution signal display conditional based on vehicle motion state. The system dynamically adjusts the security control function: caution signals are displayed when the vehicle is stationary but suppressed when the vehicle is moving, allowing the system to adapt to different operational contexts and avoid harmful effects.
2Reliability
If the caution signal is displayed to the unauthorized driver, then the security warning function is improved, but the smooth traffic flow is worsened
Solution Approach 1:
The system dynamically controls the display of caution signals based on vehicle motion detection. When the vehicle is moving, the caution signal is suppressed to maintain smooth traffic flow. When the vehicle is stationary, the caution signal is displayed to maintain security warning function. This dynamic adaptation resolves the contradiction between security warning and traffic efficiency.
3Reliability
If the system prohibits engine operation when a demand signal is received, then the security control is improved, but the ease of operation is worsened for the driver
Solution Approach 1:
The system dynamically adjusts engine operation prohibition based on vehicle motion state. When the vehicle is moving, the system overrides the prohibition command and allows engine operation to maintain ease of operation. When the vehicle is stationary, the prohibition is enforced to maintain security control. This dynamic behavior resolves the contradiction between security and operational convenience.
Data Source
AI summary
A vehicle security control system receives from a separated communication device a demand signal to prohibit or permit engine operation via an immobilizer. The vehicle control device includes a display for displaying information on the engine operation, a communication unit for receiving the demand signal from the separated communication device and a remote security ECU for providing a control signal according to the demand signal, an immobilizer ECU for setting or unsetting the immobilizer according to the control signal. The immobilizer ECU prohibits the display from displaying the information on the engine operation when the immobilizer ECU unsets the immobilizer even when the separated communication device provides the demand signal to prohibit engine operation.