Stray Voltage Detection System for Electric Shock Drowning Prevention
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Solution Overview
Problem
Existing stray voltage detection systems fail to efficiently and reliably detect dangerous electrical currents in swimming pool water, leading to potential electric shock drowning incidents, as they do not effectively alert individuals to the presence of stray voltage, which can be silent and undetectable.
Innovation Solution
A voltage detection system comprising elongate conductive elements with detector and reference electrode ends, connected to a wireless transmitter and receiver, which compares voltage signals to a threshold value to generate alerts when a dangerous stray voltage is detected, ensuring high probability of detection in both retrofit and new pool constructions, as well as in structures like piers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional stray voltage detection systems are used, then the system structure is simple, but the detection reliability and accuracy are insufficient
Solution Approach 1:
The detection system is divided into multiple independent elongate conductive elements, each with detector and reference electrode ends. These segmented elements can be distributed at different locations around the pool, allowing the system to detect stray voltage from multiple points simultaneously, thereby improving detection reliability without requiring a single complex detection unit
Solution Approach 2:
Wireless transmitters and receivers are introduced as intermediary components between the conductive elements and the central control system. These intermediaries transmit voltage data wirelessly, eliminating the need for complex wired connections while maintaining reliable data transmission, thus improving system reliability without proportionally increasing complexity
2Measurement precision
If the detector electrode is positioned close to the electrical fixture, then the voltage detection accuracy is improved, but the installation complexity increases
Solution Approach 1:
The elongate conductive elements are designed to be installed before the pool plastering process. The elements are positioned against the pool wall interior surface and held in place during plastering, allowing the plaster to form around them. This preliminary installation enables precise positioning near electrical fixtures while simplifying the overall installation process, as the elements are set in place before final pool completion
Solution Approach 2:
The detector electrode end of each conductive element is positioned locally close to specific electrical fixtures where stray voltage risk is highest, while the rest of the element extends along the pool wall. This localized positioning strategy maximizes detection accuracy at critical areas without requiring all components to be installed with equal precision, thereby improving installation ease
3Reliability
If multiple conductive elements are used to improve detection coverage, then the detection probability increases, but the device complexity increases
Solution Approach 1:
Each elongate conductive element is designed as a multi-functional unit that serves both as an electrical conductor for voltage detection and as a structurally independent component that can be installed along the pool wall. The elements can function individually or in combination with others, providing scalable detection coverage. This universality allows the system to achieve high detection probability through multiple elements without proportionally increasing overall system complexity
Solution Approach 2:
The system uses multiple conductive elements positioned at strategic locations around the pool rather than attempting comprehensive coverage with a single complex system. By placing elements at key areas where stray voltage is most likely to occur (near electrical fixtures, water entry points), the system achieves sufficient detection probability with a manageable number of components, avoiding unnecessary complexity
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 system efficiently and reliably detects stray voltages in pool water and pier environments, providing timely alerts to prevent electric shock drowning by positioning detector and reference electrodes optimally to maximize voltage detection accuracy and safety.
Implementation Method 1
a first elongate conductive element and a second elongate conductive element, with the first and second elongate conductive elements forming a pair of elongate conductive elements... with the wireless transmitter for detecting a stray voltage between the detector electrode end of the first elongate conductive element and the reference electrode end of the second elongate conductive element
Data Source
AI summary
A stray voltage detection system for detecting a stray voltage in pool water within a pool The system comprises a pair of elongate conductive elements, with one of the elongate conductive elements having a detector electrode end and a terminal end, and with the other elongate conductive element having a reference electrode end and a terminal end. The detector electrode end is positioned adjacent to an electrical fixture within the pool and the reference electrode end is positioned opposite from the detector electrode end. The terminal ends are connected to a microprocessor for measuring a voltage between the detector electrode end and reference electrode end. A voltage detection system for a pier, with the system having a pair of elongate conductive elements attached to a pair of corresponding pier pilings on opposite sides of a pier deck, and with the pair of conductive elements for measuring a voltage between the conductive elements.