Dual Beacon Infant Presence Detection Reducing False Alarms
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Solution Overview
Problem
Existing monitoring and signaling systems for preventing infant and pet abandonment in vehicles often generate false alarms due to the reliance on a single verification of the mobile device's position within a predetermined spatial region, leading to incorrect notifications.
Innovation Solution
The system employs dual beacons and a receiver to verify the mobile device's proximity to both the child seat and the vehicle, using Bluetooth Low Energy technology to emit signals with different periodicities, allowing for multiple verification conditions to confirm the presence or absence of the infant or pet, thereby reducing false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single verification of mobile device position within a predetermined spatial region is used, then the system can detect infant/pet presence, but false alarms are generated due to incorrect position verification
Solution Approach 1:
The single verification process is segmented into multiple independent verification steps. The system divides the detection process into: (1) verifying mobile device position relative to the child seat, (2) verifying mobile device position relative to the vehicle, and (3) confirming infant/pet presence through pressure sensor. Each verification must succeed for a notification to be generated, eliminating false alarms caused by incomplete verification.
Solution Approach 2:
The system implements feedback mechanisms where each verification step provides information that influences subsequent steps. The mobile device's position is continuously monitored and verified against multiple criteria, and only when all verification conditions are met does the system generate a notification. This feedback loop ensures high reliability by confirming all necessary conditions before alerting.
2Reliability
If multiple verification conditions are implemented to reduce false alarms, then notification accuracy improves, but system complexity increases
Solution Approach 1:
The beacon device performs multiple functions: it emits signals for mobile device verification, receives position information, verifies multiple spatial conditions, and controls notification generation. By making the beacon multi-functional, the system achieves high reliability through multiple verifications without proportionally increasing overall system complexity, as one component handles multiple tasks.
Solution Approach 2:
The system merges the verification of mobile device position relative to both the child seat and the vehicle into a single integrated verification process. Instead of using separate systems for each verification, the beacon device combines multiple verification conditions into one unified logic unit, reducing complexity while maintaining high notification accuracy.
3Reliability
If the mobile device must be verified close to both child seat and vehicle, then false alarms are reduced, but the system requires more stringent position verification conditions
Solution Approach 1:
The system dynamically adjusts verification requirements based on the detection context. When the pressure sensor confirms infant/pet presence on the child seat, the system then verifies mobile device position. The verification thresholds and criteria are dynamically applied only when needed, balancing reliability with user freedom. The system adapts its verification stringency to the specific situation rather than imposing constant restrictions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces false signaling notifications by ensuring that the mobile device is verified to be both close to the child seat and the vehicle, thereby accurately indicating the presence or absence of the infant or pet, thus minimizing incorrect alerts.
Implementation Method 1
the pressure sensor 10 detects the presence of the infant (for example, through capacitive detection) and generates a corresponding electric signal
Implementation Method 2
configured to emit a first signal S1, for example in radio frequency, using, for example, Bluetooth Low Energy technology
Data Source
AI summary
A monitoring and signaling system is provided that may include at least one safety device for a vehicle which can be coupled to a seat for infants or to an item for the boot for pets or to a pet collar, configured to generate an output signal indicative of the presence of an infant or a pet on the seat or in the boot or of the fact that the pet wears the collar. The system may further include a first signaling device configured to emit first signals in sequence when the output signal indicates the presence of the infant or of the pet in the vehicle; and a second signaling device configured to emit second signals in sequence when coupled to the vehicle. The system may further include a mobile device configured to: receive pairs of signals each formed by a first and a second signal, make determinations based thereon, and generate, based on the detection, different monitoring signals.