Wearable Voltage Detector Using Body Induction for Automatic Warning
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Solution Overview
Problem
Existing voltage detectors require workers to consciously wear and hold them or attach them to tools to detect nearby voltage sources, increasing the risk of accidents due to careless handling.
Innovation Solution
A voltage source approach detection voltage detector that includes a detection circuit with a first electrode to measure the voltage induced in a human body upon approaching a voltage source and a second electrode to measure the voltage to ground, outputting a signal when the human body approaches a voltage source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the worker consciously wears and holds the voltage detector or attaches it to a tool, then the voltage detection function is available, but the risk of accidental contact with voltage sources increases due to careless handling
Solution Approach 1:
The voltage detector automatically detects voltage sources in the vicinity without requiring active operation by the worker. The detector monitors the environment continuously and autonomously provides safety warnings, eliminating the need for the worker to consciously hold or operate the device while maintaining constant safety monitoring.
Solution Approach 2:
The voltage detector is worn on the worker's body in advance, positioned close to potential voltage sources before any harmful interaction occurs. This preliminary positioning enables the detector to continuously monitor and warn of approaching voltage sources, preventing accidental contact before it happens.
2Measurement precision
If the voltage detector is worn on the body close to potential voltage sources, then the detection sensitivity improves, but the device complexity increases
Solution Approach 1:
The voltage detector is divided into separate functional components: detection electrodes for sensing voltage, signal processing circuitry for analyzing the detected signals, and warning output devices for alerting the worker. This segmentation allows each component to be optimized independently while working together to provide sensitive detection with manageable overall complexity.
Solution Approach 2:
The voltage detector integrates multiple functions into a single wearable device: voltage field detection, signal amplification and processing, threshold comparison, and warning output. This multi-functionality reduces the need for multiple separate devices while maintaining detection sensitivity through the coordinated operation of integrated components.
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 detector alerts workers to the presence of nearby voltage sources without requiring conscious awareness, thereby reducing the risk of electrical accidents by providing an automatic warning when the worker approaches a charged part.
Implementation Method 1
a capacitance C01 between a charged part and the human body
Implementation Method 2
a capacitance C02 between the human body and the ground
Implementation Method 3
a dielectric body being interposed between the first electrode and the human body
Data Source
AI summary
The present disclosure provides a voltage detector capable of alerting a worker to nearby presence of a voltage source regardless of the worker's awareness simply by being worn on the worker's body. In a voltage detector for detecting approach to a voltage source, a voltage induced in a human body due to approach to a voltage source is measured by a first electrode of a detection circuit, a voltage to ground is measured by a second electrode of the same circuit, the detection circuit captures a current generated due to a difference between an electric potential of the first electrode and an electric potential of the second electrode, and output from the detection circuit is displayed for warning when the human body insulated from the ground approaches the voltage source.