A framework for wireless sensor network in web-based monitoring and control of indoor air quality (IAQ) in subway stations

In crowded subway stations indoor air quality (IAQ) is a key factor for ensuring the safety, health and comfort of passengers. In this study, a framework for wireless sensor network in VDN for monitoring and control of IAQ in subway stations is suggested. Since physical variables that describing IAQ such as the concentration of particulate, CO2, VOCs and biological agents need to be closely monitored and controlled in multiple locations in subway stations, concept of distributed monitoring and control network using wireless media needs to be implemented. Connecting remote wireless sensor network and device (LonWorks) networks to the IP network based on the concept of VDN can provide a powerful, integrated, distributed monitoring and control performance, making an innovation.