This message is related to my earlier request for advice in the topic 'finding electronics design and fabrication expertise for a project'.
Because of the kindness of the group members here, I am posting more details about the project and aims.
The overall aim is to develop and deploy inexpensive 'personal' air pollution monitors. For the environment in which I am interested, a major pollutant concern is particulates arising from biomass combustion, coal burning, and car exhaust.
Although these may be inconsistent aims, I am interested in having a device that...
- can measure particulate concentrations (and perhaps temperature and humidity levels)
- is low cost, so that many devices can be deployed within a constrained project budget
- has a good degree of concordance (at least qualitatively) with accurate stationary monitoring stations
- can be read with an app on a cellphone or similar device (bluetooth?)
- is convenient to the wearer of the device, e.g, is robust and has the ability to run on batteries for a few days at a time
I anticipate that a user (or environmental health scientist or health care professional guiding the users) might want to record reading at several points during the day, not continuously.
There are several projects I have found on the web focused on devices to quantify particulates in the air, but I don't think that they satisfy the aims above.
The closest instrument that I could find is detailed in a PhD dissertation by David Holstius, a chapter of which I have posted here:
Because of my lack of training in the field of electronics, I do not know if the detection method, components, and overall design chosen by this individual would be appropriate as a starting platform to achieve the aims above.
Any input or suggestions would be greatly appreciated.
Thank you again.