Abstract
Aimed at the characteristics of indoor application environment, a real-time wireless monitoring system for indoor air quality based the nRF24L01 and GSM network was proposed. The system built the star subnet structure with nRF24L01 wireless module, used GSM module SIM300 to complete wireless communication between the subnet and GSM network, and achieved GSM network users to remotely monitor indoor air quality. The subnets with master-slave structure mode, which was constituted by the control terminal and multiple data collection terminals, implemented indoor air quality concentration and temperature and humidity data real-time acquisition with the centralized control method. The experimental results show that the subnets can real-time finish wireless data transmission within a distance of 700 meters, and the system with simple structure and stable work can realizes real-time monitoring of indoor air quality.
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