2.3 Compact-size all-in-one sensing module for in-situ detecting of components in fine-dust or virus based on spark-induced plasma spectroscopy - Spark-induced plasma spectroscopy (SIPS)
- A spark generates via electrical discharging when a voltage is higher than the breakdown voltage of the medium around electrodes, which in turn producing a plasma
- SIPS utilizes the spark-induced plasma to obtain atomic information of the medium (fine dust or virus in current research) that exists between two electrodes
- Sensing module
- When the medium becomes plasma, it emits plasma emission light with a wavelength exhibiting atomic information of the medium
- A band-pass filter filters only the light in the wavelength band of a targeted atom, and a photodiode below the band-pass filter converts the light signal to the electrical signal
- Micro control unit (Raspberry Pi)
- Controlling spark-induced plasma intensity and delay time
- The operating system of the module
- Data processing
- User interface included
- Source code based on Python
 | | Fig. (a) The schematic of SIPS module how to operate, (b) The schematic of the measuring system, (c) SIPS module and user interface | |
