Vehicle Safety Apparatus Detecting RF Interference
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Solution Overview
Problem
Existing telematic appliances in motor vehicles are susceptible to interference from devices that disrupt GSM, GPRS, or UMTS signals, which can blackout communication and facilitate insurance fraud or theft by preventing alarm signals from being sent.
Innovation Solution
A safety apparatus with a communication unit that includes a check mechanism to detect forced interruptions in radiofrequency communication and an activation mechanism to trigger an alarm siren when such interference is detected, ensuring that alarm signals can still be sent even if regular communication is disrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a telematic appliance uses standard radio-wave communication (GSM, GPRS, UMTS) for data transmission, then normal communication operations are maintained, but the system becomes vulnerable to signal disruption devices that can blackout alarm signals
Solution Approach 1:
The patent applies dynamics by making the communication system adaptable and responsive to changing conditions. The control unit dynamically switches between normal operation mode and alarm signal mode based on detected interference conditions. The system continuously monitors communication quality and adjusts its behavior accordingly, transforming from a static communication system to a dynamic one that can respond to threats in real-time.
Solution Approach 2:
The patent changes communication parameters when interference is detected. Specifically, it modifies the transmission characteristics by sending alarm signals that differ from normal data transmissions in terms of timing, frequency, or signal structure. This parameter change allows the system to bypass disruption devices that are tuned to block standard communication patterns.
2Loss of information
If the appliance continuously communicates with the remote unit to prevent fraud, then monitoring capability is improved, but the system becomes more susceptible to interference from signal disruption devices
Solution Approach 1:
The patent implements preliminary action by preparing and storing alarm signals in advance within the control unit. Instead of generating alarm signals only when needed, the system pre-prepares these critical communication templates, allowing for immediate transmission when interference is detected. This preliminary preparation ensures that even if communication channels are disrupted, the alarm functionality remains ready and can be deployed instantly.
Solution Approach 2:
The patent converts the harmful effect of signal disruption into a beneficial trigger mechanism. When disruption devices block normal communication, this interference is detected and automatically triggers the alarm signal transmission. The harm of signal blocking becomes the activation condition for the emergency alarm function, turning a vulnerability into a protective feature.
3Device complexity
If the system uses a single communication channel for both normal operations and alarm signals, then device complexity is reduced, but the ability to transmit alarm signals under interference conditions is compromised
Solution Approach 1:
The patent segments the communication function into two distinct modes: normal data transmission and alarm signal transmission. Although both use the same physical communication channel, they are treated as separate functional entities with different protocols, timing, and priority levels. This segmentation allows the system to switch between modes based on conditions, ensuring that alarm signals can be transmitted even when normal communication is disrupted.
Data Source
Figure 1
AI summary
The safety apparatus (1) for motor vehicles or the like comprises a supporting body (2) associable with a motor vehicle, an acceleration measuring device (6) associated with the supporting body (2) and able to measure the instantaneous acceleration of the motor vehicle along at least one direction, a communication unit (7) associated with the supporting body (2) and able to set up a radiofrequency communication with a remote unit (C), a location device (11) associated with the supporting body and able to locate the position of the motor vehicle, and an electronic siren (3) associated with the supporting body (2) and able to emit an alarm acoustic signal, check means (13) able to periodically check the presence of the radiofrequency communication between the communication unit (7) and the remote unit (C), and activation means (14) operatively connected to the check means (13) and to the electronic siren (3), wherein the activation means (14) are able to activate the electronic siren (3) if the check means (13) detect a forced interruption of the radiofrequency communication.