Real-time remote monitoring of indoor air quality using internet of things (Iot) and gsm connectivity

Abstract

The paper presents an indoor air quality monitoring system which comprises of real-time sensing unit that enables remote monitoring of environmental carbon-di-oxide, temperature, and relative humidity. The simple mail transfer protocol (SMTP)-based remote monitoring system employs an Internet of Things (IoT) signal processor (CC3100) interfaced on top of a low-power microcontroller (MSP430F5529). The system is also packed with a short messaging service (SMS)-based emergency alerting mechanism on the mobile network through SIM900 GSM module. The whole system when integrated with pre-calibrated non-dispersive infrared (COZIR) sensing unit showed good response in communicating the alert messages and E-mail. The information from sensing unit can be analyzed and logged for any period of time.