Electronic Monitoring Bracelet Integrity Detection via Pressure Sensing
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Solution Overview
Problem
Conventional electronic monitoring bracelets are not sufficiently reliable in detecting unauthorized removal or integrity breaches, leading to false alarms and increased monitoring costs, with existing systems prone to tampering and unreliable over extended use periods.
Innovation Solution
An electronic monitoring bracelet with a ring-shaped body and integrated integrity detection system, featuring a pressure sensor or ultrasound sensors, and a closing system that includes irreversible locking via welding or adhesive bonding, ensuring secure attachment and reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional wire-based integrity detection systems are used, then the bracelet can be removed by severing or disconnecting wires, but the system becomes vulnerable to tampering such as bridging wires and produces false alarms
Solution Approach 1:
The patent replaces the mechanical wire-based integrity detection system with a pressure-sensitive detection system. Instead of using electric wires that can be severed or bridged, the invention uses a pressure sensor that detects changes in pressure within a sealed chamber to determine if the bracelet has been removed or tampered with. This substitution eliminates the vulnerabilities of the mechanical wire system while maintaining the ability to detect removal.
Solution Approach 2:
The patent introduces a pressure-sensitive chamber as an intermediary between the bracelet structure and the integrity detection system. The chamber fills the internal volume of the bracelet and transmits pressure changes to the pressure sensor, providing a reliable indirect detection mechanism that is not susceptible to the same tampering methods as direct wire-based systems.
2Reliability
If pressure sensors are used for integrity detection, then false alarms are reduced and reliability is improved, but the device complexity increases
Solution Approach 1:
The pressure-sensitive chamber serves multiple functions simultaneously: it acts as the structural filler of the bracelet, the transmission medium for pressure changes, and the sensing element itself. This multi-functionality reduces the need for separate components and simplifies the overall system architecture despite the improved detection reliability.
Solution Approach 2:
The patent combines the bracelet's internal volume filling function with the pressure detection function by using the same pressure-sensitive chamber for both purposes. This merging of functions eliminates the need for separate detection mechanisms and reduces system complexity while maintaining high reliability.
3Reliability
If irreversible locking via welding is used in the closing system, then security against tampering is enhanced, but the ease of manufacture and repair decreases
Solution Approach 1:
The patent uses adhesive bonding as an alternative to welding, creating a bond that is as secure as welded joints but significantly easier to manufacture. The adhesive bonding process is simpler, requires less specialized equipment, and can be more easily controlled and quality-checked, while still providing irreversible locking that prevents unauthorized removal.
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 solution provides a robust, reliable, and cost-effective monitoring system with reduced false alarms, enhanced security against tampering, and extended autonomy, ensuring accurate tracking of the wearer's movements while allowing for safe removal in emergency situations.
Implementation Method 1
The sensor comprises a pressure sensor configured for detecting a pressure variation in the chamber or in one or more chamber sections contained by the rigid shell
Implementation Method 2
The interface of at least one of the portions of the body comprises an electric heating wire connected to an internal source of energy of the bracelet positioned near a surface of the interface and configured for heating by the Joule effect for carrying out welding of the two portions at the interface
Data Source
AI summary
An electronic monitoring bracelet, comprising a ring-shaped body configured so as to be mounted around a limb or an object, and an electronic monitoring system positioned in the body, the electronic monitoring system comprising an integrity detection system and an internal source of energy. The ring-shaped body is in the form of a rigid shell containing a chamber or several chamber sections in which are positioned components of the electronic monitoring system, the ring-shaped body entirely encircling the bracelet.