Wearable Electric Shock Recognition Device Using Bridge Circuit Compensation
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Solution Overview
Problem
Existing wearable electric shock warning devices may inaccurately determine whether an electric shock has occurred, especially when the device is not worn in the direction of the high voltage source or when the wearer's posture affects the detection of biocurrent.
Innovation Solution
A wearable electric shock recognition device utilizing a bridge circuit with variable resistors and a resistance compensator to accurately determine electric shocks by measuring human body resistances at multiple points and maintaining a balanced state in the bridge circuit, which is compensated to recognize unbalanced current flow indicative of an electric shock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sensor is used to detect electric shock, then the device complexity is reduced, but the measurement precision deteriorates when the device is worn in different orientations or postures
Solution Approach 1:
The patent divides the detection function into multiple independent sensor units (first to fourth sensors) positioned at different locations on the wearable device. Each sensor independently measures biocurrent, and the results are combined through a determination unit to make the final electric shock determination. This segmentation allows the system to maintain measurement precision across various orientations and postures while keeping individual sensor complexity low.
Solution Approach 2:
The patent combines the output signals from multiple sensors through a determination unit that integrates the biocurrent measurements. By merging the detection capabilities of multiple sensors oriented in different directions, the system achieves comprehensive electric shock detection that is insensitive to the wearer's posture or device orientation, resolving the contradiction between simple device structure and accurate measurement.
2Ease of operation
If the device is worn away from the high voltage source direction, then the ease of operation is improved, but the measurement precision deteriorates due to insufficient biocurrent detection
Solution Approach 1:
The patent equips different regions of the wearable device with sensors having different detection orientations (first to fourth sensors). This local quality differentiation ensures that regardless of which direction the device faces relative to the high voltage source, at least one sensor will be optimally positioned to detect biocurrent. This allows the device to be worn in any orientation for ease of operation while maintaining measurement precision through the distributed sensor array.
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
Enables accurate detection of electric shocks regardless of the device's orientation relative to the high voltage source and the wearer's posture, providing reliable alerts and reducing the risk of undetected shocks.
Implementation Method 1
first to fourth variable resistors 112, 122, 132, and 142 and a bridge resistor 150 forming a bridge circuit 1000
Implementation Method 2
first to fourth variable resistors 112, 122, 132, and 142 and a bridge resistor 150 forming a bridge circuit 1000; a resistance compensator 210 compensating the first to fourth variable resistors 112, 122, 132, and 142 in the bridge circuit 1000
Implementation Method 3
a resistance compensator 210 compensating the first to fourth variable resistors 112, 122, 132, and 142 in the bridge circuit 1000 so that the bridge circuit 1000 is in a balanced state
Implementation Method 4
when it is determined that a magnitude of a current i flowing through a bridge line BL exceeds a predetermined electric shock threshold, a determiner 230 determines that an electric shock event has occurred
Data Source
AI summary
Disclosed is a wearable electric shock recognition device, which includes first to fourth variable resistors and a bridge resistor forming a bridge circuit; a resistance compensator compensating the first to fourth variable resistors in the bridge circuit so that the bridge circuit is in a balanced state. When it is determined that a magnitude of a current flowing through a bridge line exceeds a predetermined electric shock threshold, a determiner determines that an electric shock event has occurred.