Table 1.
The configuration and settings of the portable devices and software.
| Devices & Software | Configuration | Data Collection |
|---|---|---|
| Portable air pollution sensors | AirBeam (PM2.5 in the unit of µg/m3; 2000 mAh) | Air pollution data collection |
| Portable noise sensors | SLM-25 (accuracy: +1.5 dB; measurement range: 30–130 dBA) | Noise data collection |
| Mobile phone | ZTE A603 (GPS with A-GPS support; 16 GB memory; 2400 mAh) | Hub for GPS and air pollution data collection and storage |
| Power bank (white) | Aigo E20000+ (20,000 mAh) | Provide extra battery life for the air pollution sensor |
| Power bank (black) | Anker PowerCore (10,000 mAh) | Provide extra battery life for the mobile phone |
| GPS Logger | Android application (installed on the mobile phone) | GPS data collection. |
| TeamViewer | Android application & Desktop software (installed in the cellphone and remote monitor computers) | Remote monitoring of the data collection |
| AirCasting | Android application (installed in the cellphone) | Communicating with the air pollution sensor |
| Secret Space Encryptor | Android application & Desktop software (installed in the mobile phone and remote monitor computers) | Encrypting the GPS trajectory and air pollution data in the mobile phone to protect participants’ privacy |