50 Hz Temporal Magnetic Field Monitoring from High-Voltage Power Lines: Sensor Design and Experimental Validation.
This paper describes the design, calibration, and experimental validation of a low-cost tri-axial sensor for monitoring 50 Hz magnetic fields from high-voltage power lines. The sensor was calibrated on-board and in-lab against a narrowband EHP-50 benchmark and then verified in situ at two locations, with reported average deviations of 6.2% and 1.4%. A four-sensor deployment collected over 6 million samples over at least three months, with reported uptimes of 81–96%, while noting that broader long-term testing is still needed.
Key points
- A low-cost tri-axial sensor was developed to monitor 50 Hz magnetic fields from high-voltage power lines.
- The stated measurement capability spans 0.08 µT to 364 µT across two measurement ranges.
- Calibration included an on-board approach accounting for attenuation, noise, and parasitic components, plus an in-lab comparison to an EHP-50 benchmark.
- In situ validation under high-voltage power lines at two locations measured 0.10–13.43 µT.
- Average deviations versus the benchmark were reported as 6.2% and 1.4% at the two validation sites.
- Additional verification included measurements up to 113.3 µT in a power distribution sub-station.
- A four-sensor field network reported 81–96% uptime over a minimum three-month interval and collected over 6 million samples.
- The authors note that more extensive long-term testing with more sensors is needed to confirm uptime across circumstances.
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AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
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