Deprez Kenneth, Van de Steene Tom, Verloock Leen, Tanghe Emmeric, Gommé Liesbeth, Verlaek Mart, Goethals Michel, van Campenhout Karen, Plets David, Joseph Wout
Department of Information Technology, Ghent University/imec WAVES, 9052 Ghent, Belgium.
Department of Environment & Spatial Development, Flemish Planning Bureau for the Environment and Spatial Development, 1000 Brussels, Belgium.
Sensors (Basel). 2024 Aug 17;24(16):5325. doi: 10.3390/s24165325.
A low-cost, tri-axial 50 Hz magnetic field monitoring sensor was designed, calibrated and verified. The sensor was designed using off-the-shelf components and commercially available coils. It can measure 50 Hz magnetic fields originating from high-voltage power lines from 0.08 µT to 364 µT, divided into two measurement ranges. The sensor was calibrated both on-board and in-lab. The on-board calibration takes the circuit attenuation, noise and parasitic components into account. In the in-lab calibration, the output of the developed sensor is compared to the benchmark, a narrowband EHP-50. The sensor was then verified in situ under high-voltage power lines at two independent measurement locations. The measured field values during this validation were between 0.10 µT and 13.43 µT, which is in agreement with other reported measurement values under high-voltage power lines in literature. The results were compared to the benchmark, for which average deviations of 6.2% and 1.4% were found, at the two independent measurement locations. Furthermore, fields up to 113.3 µT were measured in a power distribution sub-station to ensure that both measurement ranges were verified. Our network, four active sensors in the field, had high uptimes of 96%, 82%, 81% and, 95% during a minimum 3-month interval. In total, over 6 million samples were gathered with field values that ranged from 0.08 µT to 45.48 µT. This suggests that the proposed solution can be used for this monitoring, although more extensive long-term testing with more sensors is required to confirm the uptime under multiple circumstances.
设计、校准并验证了一种低成本的三轴50Hz磁场监测传感器。该传感器采用现成的组件和市售线圈设计而成。它能够测量来自高压输电线的50Hz磁场，测量范围为0.08µT至364µT，分为两个测量量程。该传感器在板载和实验室环境下均进行了校准。板载校准考虑了电路衰减、噪声和寄生组件。在实验室校准中，将所开发传感器的输出与基准设备窄带EHP - 50进行比较。然后，在两个独立的测量地点，在高压输电线下方对该传感器进行了现场验证。在此次验证过程中测得的场值在0.10µT至13.43µT之间，这与文献中报道的其他高压输电线下方的测量值一致。在两个独立测量地点，将结果与基准设备进行了比较，平均偏差分别为6.2%和1.4%。此外，在一个配电变电站中测量到了高达113.3µT的磁场，以确保两个测量量程均得到验证。我们的网络，即现场的四个有源传感器，在至少3个月的时间间隔内，正常运行时间分别高达96%、82%、81%和95%。总共收集了超过600万个样本，场值范围为0.08µT至45.48µT。这表明所提出的解决方案可用于这种监测，不过需要使用更多传感器进行更广泛的长期测试，以确认在多种情况下的正常运行时间。
