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Sensors

Patent Reveals Breakthrough in Temperature Measurement System with Thermal and Image Sensors

Strategic Insights

— 1 min read

A newly published patent by inventors from PixArt Imaging discloses a temperature measurement system that incorporates both thermal and image sensors, offering improved accuracy in temperature measurement. The system is designed to compensate for environmental temperature fluctuations, distance between the measured person and the system, and position offset between the sensors. This innovation has significant implications for applications such as fever detection in public health settings.

Key Takeaways:

  • The temperature measurement system comprises an image sensor, thermal sensor, memory, and processor to capture an image frame and thermal image, and record a calibration temperature and number of offset pixels.
  • The system can determine the measured temperature without calibrating the position offset between the image frame and thermal image, or can determine the measured temperature after calibrating the position offset.
  • The processor is configured to calculate the average of multiple temperature values measured within the first region of interest (ROI) as the measured temperature.
  • The system can record the calibration temperature and number of offset pixels before shipment to calibrate the current temperature determined according to the current image frame and thermal image.
  • The position offset includes a first direction offset and a second direction offset, which is perpendicular to the first direction offset.
  • The number of offset pixels can be decreased when the operating distance is larger than the reference distance, and increased when the operating distance is smaller than the reference distance.

Statistics:

  • There are 18 claims in the patent.
  • The patent was filed on January 3, 2022, and published online on September 30, 2025.
  • The patent number is 12430799.
  • The patent has been assigned to PixArt Imaging.

Sources:

  • Chu, Yen-Chang. Calibration of temperature measurement system with thermal sensor and image sensor. U.S. Patent Number 12430799, filed January 3, 2022, and published online on September 30, 2025. Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12430799)&db=USPAT&type=ids

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