Difference between revisions of "Working principle"
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# Polluted air passing through filter paper | # Polluted air passing through filter paper | ||
# Filter paper absorbs black carbon (BC) | # Filter paper absorbs black carbon (BC) | ||
# Sensor measures attenuation of LED shining at 880nm through filter paper | # Sensor measures attenuation of LED shining at 880nm through filter paper (and bias of environmental light changes) | ||
# Data is evaluated by Python script and saved as .csv | # Data is evaluated by Python script and saved as .csv | ||
# Data is displayed in web browser | # Data is displayed in web browser | ||
Latest revision as of 12:56, 12 July 2021
How does the bcMeter work?
- Polluted air passing through filter paper
- Filter paper absorbs black carbon (BC)
- Sensor measures attenuation of LED shining at 880nm through filter paper (and bias of environmental light changes)
- Data is evaluated by Python script and saved as .csv
- Data is displayed in web browser