Abstract: A system and method for closed-loop testing of a biological or chemical sensor is disclosed. The tester is fluidically coupled to the input port and exhaust port of a sensor. A mixture of a chemical or biological simulant and air is generated by the tester and is delivered to the sensor. The mixture of simulant and air exiting the sensor is delivered to a collection device.

Abstract: A CBRNE detection system and method for operating same are disclosed. The method provides a relatively increased Probability of Detection and a relatively decreased Probability of False Alarms for a networked system of detectors. In the illustrative embodiment, a central controller of the system is capable of receiving information from individual CBRNE detectors and of determining whether or not to issue an alarm indicating that a CBRNE event has occurred. Data obtained from individual CBRNE detectors is evaluated based on one or more “sensor alert-to-system alarm” processing modes. The various processing modes specify the requirements that must be satisfied before a system-wide “alarm” is issued.

Abstract: A system and method for closed-loop testing of a biological or chemical sensor is disclosed. The tester is fluidically coupled to the input port and exhaust port of a sensor. A mixture of a chemical or biological simulant and air is generated by the tester and is delivered to the sensor. The mixture of simulant and air exiting the sensor is delivered to a collection device.

Abstract: An apparatus and methods for improving the ability of a detection system to distinguish between a “true attack” as opposed to a nominal increase in a monitored environmental characteristic.

Abstract: A CBRNE detection system and method for operating same are disclosed. The method provides a relatively increased Probability of Detection and a relatively decreased Probability of False Alarms for a networked system of detectors. In the illustrative embodiment, a central controller of the system is capable of receiving information from individual CBRNE detectors and of determining whether or not to issue an alarm indicating that a CBRNE event has occurred. Data obtained from individual CBRNE detectors is evaluated based on one or more “sensor alert-to-system alarm” processing modes. The various processing modes specify the requirements that must be satisfied before a system-wide “alarm” is issued.

Abstract: An apparatus and methods for improving the ability of a detection system to distinguish between a “true attack” as opposed to a nominal increase in a monitored environmental characteristic.

Abstract: An autonomously-cleaned conditioning system conducts a routine purge cycle to clear accumulated particulates from a filter, concentrator, or both. The purge cycle is conducted by reversing air flow through the filter and/or concentrator. Air flow is reversed on a periodic basis or on the occurrence of a condition, such as a reduction in air flow exiting the concentrator.