Scientific Reports· 2026Q1
Real time VBNE and leakage current monitoring in hospital electrical systems: a low cost approach
- 0citations
- Q1SCImago
- 2026year
Short summary
A low-cost, Arduino-based system provides real-time monitoring of neutral-to-earth voltage (VBNE) and leakage currents in hospital electrical systems, alerting staff to potential safety hazards within 150 ms.
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Abstract
Abstract Neutral to earth voltage (VBNE) in hospital electrical installations can reveal grounding issues or leakage currents that threaten patient safety and sensitive medical equipment. Patients with varying electrical resistances are particularly at risk, highlighting the need for continuous monitoring. This study presents a low cost, Arduino based relay system programmed in C + + for real time VBNE measurement, providing visual and audible alerts when thresholds are exceeded. The system compensates for rectifier losses and reliably distinguishes normal (≤ 1.5 V), warning (1.5–3 V), and fault (> 3 V) conditions, with an average response time below 150 ms. Validation on operational hospital circuits, benchmarked against a calibrated commercial leakage analyzer, showed consistent and reproducible results. This scalable system enhances electrical safety for patients, staff, and equipment, with potential improvements including isolated ADCs, remote logging, and automatic trip functions to strengthen monitoring in clinical settings.
The authors' abstract, as published at the source. Scientific Reports, 2026 · DOI ↗
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