Silent Vehicle Alarm Using OEM Input Devices
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Solution Overview
Problem
Conventional vehicle alarm systems are not suitable for situations where vehicle occupants are present during crimes like car-jacking or robbery, as they can escalate the situation and put the occupant in greater harm, and existing solutions require new devices or installations.
Innovation Solution
A method using OEM-installed vehicle electronics with manually actuatable input devices to store and trigger a silent alarm sequence, allowing occupants to discreetly send a help signal by entering a predetermined sequence of activations, which wirelessly transmits a silent notification without alerting the assailant, utilizing existing devices like switches, cameras, or gesture input devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an audible alarm is triggered to scare the perpetrator away, then the alarm can attract the attention of those within the vicinity, but it may escalate the situation and put the victim in greater harm if vehicle occupants are present
Solution Approach 1:
The system provides different alarm types (audible vs. silent) for different situations. The silent alarm specifically addresses the local need for discretion when occupants are present, while the audible alarm remains available for situations where attracting attention is appropriate. This localized adaptation resolves the contradiction by matching the alarm response to the specific threat context.
Solution Approach 2:
The system dynamically adjusts the alarm behavior based on real-time conditions. By detecting whether the vehicle is locked and whether an occupant is present, the system automatically selects between silent and audible alarm modes. This dynamic response allows the alarm to be effective while minimizing harm to occupants in carjacking scenarios.
2Reliability
If a silent alarm system is added to provide discreet alerting, then occupant safety is improved, but it requires new devices or installations
Solution Approach 1:
The system makes existing vehicle input devices serve multiple functions. Manual input devices already present in the vehicle (for functions like window control, door locking, or climate control) are repurposed to also serve as silent alarm triggers through specific activation patterns. This eliminates the need for dedicated alarm buttons or new hardware installations while maintaining robust safety functionality.
Solution Approach 2:
The vehicle's existing electronics and input devices serve the dual purpose of normal vehicle operation and silent alarm triggering. The system leverages the vehicle's own components rather than requiring external additions, reducing complexity and installation requirements while providing comprehensive safety coverage.
3Device complexity
If existing manually actuatable input devices are used for both primary vehicle functions and silent alarm triggering, then device complexity is reduced, but the input sequence detection must be precise
Solution Approach 1:
The system pre-defines specific activation sequences that trigger the silent alarm, such as locking/unlocking patterns or specific combinations of input device activations. By establishing these predetermined sequences in advance, the system can accurately distinguish between normal vehicle operation and alarm-triggering intent, maintaining high detection precision without adding complexity.
Solution Approach 2:
The system monitors and analyzes the sequence, timing, and pattern of input device activations to distinguish between legitimate vehicle operation and silent alarm triggering. By implementing feedback mechanisms that evaluate the characteristics of each input sequence, the system achieves precise detection while using only existing hardware, resolving the contradiction between simplicity and precision.
Data Source
AI summary
A system and method for triggering a silent alarm notification in the event the vehicle occupant comes under attack and needs to discretely signal for help. The system includes an integrated silent vehicle alarm that is triggered by the vehicle occupant by entering a pre-programmed silent alarm sequence. The silent alarm sequence is entered using OEM-installed manually actuatable devices such as door or steering wheel switches located within the vehicle. These manually actuatable devices have dual functions: a primary vehicle related function (such as opening/closing a window) and a secondary function as input devices for the silent alarm sequence. In this way the silent alarm signal utilizes devices already present in the vehicle and requires no new installation or placement of new devices. The silent alarm notification is wirelessly sent to a remote facility for vehicle tracking and emergency response.