Wearable Shock Sensor for Automatic Audio Evidence Capture
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Solution Overview
Problem
Existing personal protection devices do not effectively address the immediate needs of victims in sudden assaults, as they often require deliberate action and may not provide immediate evidence for criminal prosecution, especially in cases where fingerprints and DNA evidence are unavailable.
Innovation Solution
A wearable device, such as a smartwatch, equipped with a processor, shock sensor, and speaker, which automatically records ambient sounds and triggers an alarm upon physical shock, allowing for continuous or burst wireless transmission to a telephone, and includes options for selective recording and alarm activation based on user-defined events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic shock-triggered recording is implemented, then evidence capture reliability is improved, but device complexity increases
Solution Approach 1:
The device continuously monitors shock sensors and audio inputs in advance, so that when an assault occurs, the evidence is already captured and ready for immediate transmission. This eliminates the need for deliberate user action during the critical moment of assault.
Solution Approach 2:
The system automatically detects shocks through sensors, triggers recording, and initiates transmission without requiring user intervention. The device serves itself by autonomously completing the entire evidence capture and transmission process.
2Reliability
If continuous audio recording is implemented, then evidence availability is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous recording, the system uses periodic shock detection to trigger recording events. The shock sensor continuously monitors for physical impacts, and only when a threshold is exceeded does the audio recording activate, thereby reducing overall energy consumption while maintaining evidence availability.
Solution Approach 2:
The shock sensor performs preliminary monitoring of the environment for assault indicators before activating the more energy-intensive audio recording function. This staged approach ensures recording only occurs when evidence is actually needed.
3Loss of time
If automatic transmission to remote device is implemented, then response time is improved, but device complexity increases
Solution Approach 1:
The device automatically transmits recorded audio evidence to a remote device or law enforcement without requiring user action. The system handles the entire transmission process autonomously, including selecting transmission methods and delivering evidence to authorities.
Solution Approach 2:
The system uses wireless communication intermediaries (such as cellular networks or Bluetooth) to transfer evidence from the wearable device to remote devices or law enforcement, enabling automatic long-distance transmission without direct user involvement.
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
The device provides immediate evidence recording and alarm activation during assaults, enhancing victim safety and aiding in criminal prosecution by capturing audio evidence that can be used for voice frequency analysis.
Implementation Method 1
a shock sensor in the housing and sending signals representing physical shock to the processor
Implementation Method 2
A speaker also is on the housing and is controlled by the processor
Data Source
AI summary
A wearable accoutrement such as a wristwatch records noises within a wearer's vicinity, and white noises may be filtered out to output pure human voices. The voice recording feature can be activated manually or automatically during a “panic mode” as indicated by a loud noise or sudden biological changes such as an increase in heart rate or body temperature. The accoutrement can also monitor other environmental elements such as light, motion and audio and may be paired with a wireless phone such that noise from a stressful event can be sent to a remote server which processes the data. A motion sensor in the accoutrement may also activate an audible alarm in the event of physical trauma to the wearer to induce an attacker to flee.