Patent ID: 7765072
Filing Date: 2010-07-27
Classification: F24F,Y02B

Abstract:
1. A building protection system for a building having an inlet air duct with an inlet damper operable to regulate inlet air entering the building and passing through the inlet air duct, a return air duct with a return damper operable to regulate return air, and a fan system operable to circulate a mixture of the inlet air and the return air in the building, the building protection system comprising: a chemical sensor system operable to detect one or more chemicals in the inlet air; a chemical sensor system operable to detect the one or more chemicals in the return air; a radiological sensor system operable to detect one or more radioactive materials in the inlet air; a radiological sensor system operable to detect the one or more radioactive materials in the return air; and a control system in communication with the sensor systems to receive output therefrom; the control system is operable to determine that: (a) output from any of the chemical sensor systems indicates more than a predetermined level of one or more of the one or more chemicals and (b) output from any of the radiological sensor systems indicates more than a predetermined level of one or more of the one or more radioactive materials; and the control system is operable to signal a building control system to close the dampers and to turn off the fan system whenever the control system determines that output from any of the chemical sensor systems indicates more than a predetermined level of one or more of the one or more chemicals or whenever the control system determines that output from any of the radiological sensor systems indicates more than a predetermined level of one or more of the one or more radioactive materials; wherein the control system is operable to communicate over an operator communication link with an operator interface computer, and over a remote communication link with a remote monitoring center; wherein: (a) the control system is operable to display information on a control system display; (b) the control system sends information displayed on the control system display over the remote communication link to the remote monitoring center; and (c) the remote monitoring center is operable to display the information; and wherein: the information displayed on the control system display includes which sensor system and what type of sensor system detected an amount exceeding a predetermined level, a location of the sensor system as to which building and location within the building, and protocols to follow for a particular type of detection event.