Long-Term Monitoring of Extremely Low Frequency Magnetic Fields in Electric Vehicles

2019 · Unclear · Low evidence

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UnclearLow evidencePaper 1684

Magnetic flux density amplitudes and spectral components in EV cabins varied over time and could be modified by replacing vehicle components and hubs. Regular checks/maintenance did not influence magnetic flux density values.

Study snapshot

Publicationmanual · 2019

Study typeexposure_assessment

Reported directionUnclear

Evidence ratingLow

Abstract

Long-Term Monitoring of Extremely Low Frequency Magnetic Fields in Electric Vehicles Yang L, Lu M, Lin J, Li C, Zhang C, Lai Z, Wu T. Long-Term Monitoring of Extremely Low Frequency Magnetic Fields in Electric Vehicles. Int J Environ Res Public Health. 2019 Oct 7;16(19). pii: E3765. doi: 10.3390/ijerph16193765. Abstract Extremely low frequency (ELF) magnetic field (MF) exposure in electric vehicles (EVs) has raised public concern for human health. There have been many studies evaluating magnetic field values in these vehicles. However, there has been no report on the temporal variation of the magnetic field in the cabin . This is the first study on the long-term monitoring of actual MFs in EVs. In the study, we measured the magnetic flux density (B) in three shared vehicles over a period of two years. The measurements were performed at the front and rear seats during acceleration and constant-speed driving modes. We found that the B amplitudes and the spectral components could be modified by replacing the components and the hubs, while regular checks or maintenance did not influence the B values in the vehicle. This observation highlights the necessity of regularly monitoring ELF MF in EVs, especially after major repairs or accidents, to protect car users from potentially excessive ELF MF exposure. These results should be considered in updates of the measurement standards. The ELF MF effect should also be taken into consideration in relevant epidemiological studies. Open access paper: mdpi.com

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment

Effect directionunclear

PopulationNot supplied

Sample size3

ExposureELF · two years (long-term monitoring)

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Outcomes measured

Magnetic flux density (B) in EV cabin
Temporal variation of ELF magnetic fields
Spectral components of ELF magnetic fields during driving modes

Limitations

No health outcomes assessed (exposure monitoring study)
Only three shared electric vehicles measured

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": "electric vehicle",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "two years (long-term monitoring)"
  },
  "population": null,
  "sample_size": 3,
  "outcomes": [
    "Magnetic flux density (B) in EV cabin",
    "Temporal variation of ELF magnetic fields",
    "Spectral components of ELF magnetic fields during driving modes"
  ],
  "main_findings": "Magnetic flux density amplitudes and spectral components in EV cabins varied over time and could be modified by replacing vehicle components and hubs. Regular checks/maintenance did not influence magnetic flux density values.",
  "effect_direction": "unclear",
  "limitations": [
    "No health outcomes assessed (exposure monitoring study)",
    "Only three shared electric vehicles measured"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "extremely low frequency",
    "ELF",
    "magnetic field",
    "magnetic flux density",
    "electric vehicles",
    "EV cabin",
    "long-term monitoring",
    "temporal variation",
    "spectral components",
    "maintenance",
    "repairs",
    "measurement standards"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.22,
      "reason": "Study concerns ELF magnetic field exposure in vehicles; could be relevant to drivers/users with repeated exposure, though no occupation is explicitly stated."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/ijerph16193765
PubMed: Not supplied

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