Figure 1. The airborne particle monitor and feedback system with graphical display.

A. A Dylos particle counter was augmented with a wireless transceiver, visual and audible signals, and additional data storage. B. Real-time data on particle levels were transmitted from the customized Dylos to a local netbook computer running the Ubuntu Linux or Windows XP operating system, where they were displayed on an animated graph and automatically uploaded via USB cell modem to a remote web-server (in figure, see cell phone placed on netbook keyboard to show scale).