A multi-range multi-device calibration system and method for high concentration particulate matter
By designing a multi-device calibration system for high-concentration particulate matter, a fluidized bed aerosol generator and a honeycomb core structure are used to achieve airflow homogenization. Combined with the measurement principles of charge induction and light scattering, the error and clogging problems of traditional calibration systems are solved, and accurate calibration and precise measurement of multiple devices are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Hefei Comprehensive Science Center Environmental Research Institute
- Filing Date
- 2026-05-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies fail to effectively consider the calibration impact of devices with different operating principles in real-world environments, and traditional calibration systems are prone to clogging due to particulate matter deposition, making it impossible to accurately calibrate multiple devices simultaneously.
A calibration system comprising a dust particle generation unit, a dust transmission unit, and a dust post-processing unit was designed. The system uses a fluidized bed aerosol generator and an air compressor to generate dust, and achieves airflow homogenization through a honeycomb core and a variable frequency fan. Measurement devices based on the principles of charge induction and light scattering are connected to the same physical cross section, and a non-contact measurement method is adopted.
It enables accurate calibration of devices based on different principles at the same point in time, eliminates systematic errors and blockage problems, and ensures the accuracy and reliability of measurements.
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