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Digitalized Thermal Inspection Method of the Low-Frequency Stimulation Pads for Preventing Low-Temperature Burn in
HyungTae Kim1, Jong-Ik Song2, Ji-Won Seo2
1Korea Institute of Industrial Technology, Ansan 15588, Republic of Korea.
Bioengineering (Basel, Switzerland)
|June 26, 2025
Summary
Accurate thermal imaging of low-frequency stimulation (LFS) pads prevents low-temperature burns (LTBs). A novel background subtraction method precisely measures LFS pad temperatures for enhanced product safety.
Area of Science:
- Biomedical Engineering
- Thermal Imaging
- Medical Device Safety
Background:
- Low-frequency stimulation (LFS) pads are used for thermotherapy, requiring accurate temperature monitoring.
- Potential for low-temperature burns (LTBs) necessitates safety investigations, especially for pads contacting sensitive skin areas.
- Conventional region-of-interest (ROI) methods struggle with complex LFS pad shapes for thermal analysis.
Purpose of the Study:
- To develop and validate an accurate thermal measurement method for LFS pads using background subtraction (BGS).
- To ensure the safety of LFS thermal pads by preventing low-temperature burns (LTBs).
- To evaluate the effectiveness of BGS with digital and morphological filters for complex pad shapes.
Main Methods:
- Utilized thermal imaging with active region-of-interest (ROI) extraction via background subtraction (BGS).
- Implemented BGS with digital and morphological filters for time-variant thermal images of LFS pads.
- Experimented with abdominal, cervical, and patellar pads using open-source tools.
Main Results:
- Successfully separated LFS pad foreground from background irrespective of size, position, orientation, or shape.
- Achieved high-accuracy thermal characteristic evaluation of LFS pads with complex geometries.
- Standard deviation of pixel history (SDPH) proved a simple yet effective BGS method for LTB risk identification.
Conclusions:
- The proposed SDPH method offers a simple and accurate approach for LFS pad thermal measurement, surpassing conventional BGS techniques.
- BGS methods enhance the reliability of products used on the human body and can be applied to industrial temperature inspection.
- Accurate thermal measurement is crucial for preventing LTB risks associated with thermotherapy devices.
Keywords:
data digitalizationlow frequency stimulationlow-temperature burnsafety evaluationthermal imagingMore Related Videos
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