Vehicle Antitheft Device Selective Function Suspension for Remote Start
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Solution Overview
Problem
Conventional vehicle antitheft devices that allow remote engine starting often compromise security functions, leading to a deterioration in antitheft properties as all security functions are canceled during remote engine start, potentially triggering false alarms and failing to maintain vigilant states for other theft modes.
Innovation Solution
A vehicle antitheft device and control method that selectively stops specific theft prevention functions before initiating a remote engine start, maintaining vigilant states for other theft modes and restoring functions after engine stop, thereby preventing security function activation due to remote engine starts and stops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If all security functions are canceled when remote engine start is performed, then false alarms due to security function activation are avoided, but antitheft property during the period from remote control operation to vehicle occupancy is deteriorated
Solution Approach 1:
The security functions are segmented into engine-start-related functions and other theft prevention functions. When remote engine start is performed, only the engine-start-related security function is temporarily suspended, while other theft prevention functions remain active. This segmentation allows the system to avoid false alarms during remote starting while maintaining antitheft protection for other theft modes.
2Object-generated harmful factors
If security function regarding engine start is suspended during remote start, then false alarm is avoided, but security function regarding other theft modes is compromised
Solution Approach 1:
Different security functions are treated with different local qualities during remote engine start. The engine-start-related security function is locally suspended to prevent false alarms, while other theft prevention functions maintain their vigilant state. This local quality differentiation ensures that each security function operates appropriately for its specific context during remote starting.
3Reliability
If security function is maintained during remote start, then antitheft property is improved, but false alarm due to security function activation occurs
Solution Approach 1:
The security function state is made dynamic based on the operational context. During remote engine start, the system dynamically adjusts the engine-start-related security function to a suspended state, while maintaining other security functions in their vigilant state. After remote starting completes, the security function dynamically returns to its normal vigilant state. This dynamic adjustment prevents false alarms while maintaining overall security.
Data Source
AI summary
When a remote start of an engine using a predetermined transmitter is performed, a security regarding theft of a vehicle can be prevented form being significantly deteriorated. The vehicle has a remote engine starter for remotely start an engine and a vehicle antitheft device for activating an alarm when there is a possibility of occurrence of vehicle theft. The remote engine starter and the vehicle antitheft device are connected to each other through a communication line. In a case where an engine start signal is supplied from the transmitter, the remote engine starter is caused to supply a start signal to the vehicle antitheft device through the communication line before causing a contact point closing signal to be supplied to an ignition relay. When the start signal is supplied to the vehicle antitheft device, preventing apparatus, only the security function regarding conditions of no-insertion of an ignition key and an ignition ON is cancelled to be an unvigilant state, and the security function regarding other conditions is maintained to be a vigilant state.