Non-Powered Dislocation Sensing for Body-Worn Device Attachment
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Solution Overview
Problem
Existing body-worn electronic devices for law enforcement officers often detach from their mounting positions during duty, leading to potential loss or malfunction without the officer's awareness.
Innovation Solution
Equipping body-worn devices with non-powered dislocation sensors that trigger a switch when detached, allowing for detection and notification of device dislocation through wired or wireless communication, or using a non-powered antenna coil to respond to external radio signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a powered dislocation sensor is used to detect device dislocation, then measurement precision is improved, but use of energy increases and device complexity increases
Solution Approach 1:
The system divides dislocation detection into two segments: a powered dislocation sensor for high-precision detection when needed, and a non-powered dislocation sensor for continuous monitoring. This segmentation allows the system to achieve high measurement precision only when necessary, reducing overall energy consumption while maintaining detection capability.
Solution Approach 2:
The powered dislocation sensor operates periodically or on-demand rather than continuously, activating only when the non-powered sensor detects potential dislocation events. This periodic operation maintains measurement precision when needed while significantly reducing energy consumption compared to continuous operation of a powered sensor.
2Measurement precision
If a powered dislocation sensor is used to detect device dislocation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into two distinct sensor types with different complexity levels. The non-powered sensor provides basic monitoring with low complexity, while the powered sensor provides enhanced precision when activated. This segmentation allows the system to achieve high measurement precision without requiring the entire system to operate at high complexity continuously.
Solution Approach 2:
The non-powered dislocation sensor acts as an intermediary that triggers the powered sensor only when necessary. This intermediary role allows the complex powered sensor to remain inactive most of the time, reducing overall device complexity while maintaining the capability for high-precision detection when required.
3Use of energy by moving object
If only a non-powered dislocation sensor is used, then use of energy is reduced, but measurement precision deteriorates
Solution Approach 1:
The system segments detection functions between two sensor types: the non-powered sensor handles routine monitoring with low energy consumption, while the powered sensor provides high-precision measurement when activated. This segmentation allows the system to maintain low overall energy usage while preserving the capability for high-precision detection when needed.
Solution Approach 2:
The powered sensor operates periodically based on triggers from the non-powered sensor, providing high-precision measurements only when dislocation events are detected. This periodic activation maintains measurement precision for critical events while keeping energy consumption low during normal operation.
4Reliability
If redundant sensor systems are implemented for fail-safe operation, then reliability is improved, but device complexity increases
Solution Approach 1:
The redundant sensor system is segmented into two distinct functional layers: a non-powered sensor for continuous monitoring and a powered sensor for confirmatory high-precision detection. This segmentation provides fail-safe operation through redundancy while managing complexity by assigning specific roles to each sensor type, avoiding the need for fully redundant complex systems.
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
Ensures that body-worn devices remain securely attached, preventing accidental detachment and ensuring vital information is captured when needed, with minimal power consumption.
Implementation Method 1
a non-powered dislocation sensor that detects device dislocation
Implementation Method 2
a powered dislocation sensor that uses an actuator to detect device dislocation
Data Source
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AI summary
An indication from a body-worn device may be received at a user device, in which the indication notifies the user device that the body-worn device has detached from a mounting position. The user device may be a body-worn hub or another body-worn device. A command is then generated at the user device to trigger the body-worn device or another body-worn device to perform an action based at least on the indication. In some instances, the user device may send an event notification for the indication to an event handler on a hub or a server for the event handler to determine whether to perform an action based at least on the event notification.