Smart FAIMS sensor
There is no mask on the market or registered with the USPTO that uses ultraviolet light to kill air-borne viral and bacterial contaminants. The invention will ensure that if an individual must perforce be exposed to contaminated air as a result of natural or manmade events, then that individual will be able to use the Ultraviolet Light Assisted Protective Breathing Mask (the “ULAP Breathing Mask”) to kill whatever known or unknown viruses or bacteria may be in the vicinity. The ULAP Breathing Mask kills these contaminants before inhaled air ever reaches the filters. The prototype weighs approximately three pounds, and so is easily portable and is practical.
1 . A smart sensor for detecting a target analyte at a low false positive rate, the sensor comprising:
a sensor array comprising a first FAIMS sensor characterized by a first operating point and a second FAIMS sensor characterized by a second operating point;
and
a controller configured to control each FAIMS sensor in the sensor array and register an alarm when the target analyte is detected by each FAIMS sensor in the sensor array.
2 . The smart sensor of claim 1 further comprising a wireless transmitter/receiver configured to transmit signals from the sensor array to the controller and receive commands for the sensor array from the controller.
3 . The smart sensor of claim 1 wherein the first operating point has a higher sensitivity to the target analyte relative to the sensitivity of the second operating point.
4 . The smart sensor of claim 1 wherein the second operating point has a higher selectivity to the target analyte relative to the selectivity of the first operating point.
5 . The smart sensor of claim 1 wherein the target analyte is detected when a signal from the first sensor exceeds a first threshold and a signal from the second sensor exceeds a second threshold.
6 . The smart sensor of claim 1 wherein the controller is further configured to activate the second FAIMS sensor in the sensor array only when the first FAIMS sensor in the sensor array detects the target analyte.
7 . The smart sensor of claim 1 , wherein the second FAIMS sensor has an effective area that is larger than a cross-sectional area of the first FAIMS sensor.
8 . The smart sensor of claim 1 , wherein the second FAIMS sensor comprises one or more FAIMS sensors controlled as a single group.
9 . A method for detecting a target analyte at a low false positive rate, the method comprising:
providing a sensor array including a first FAIMS sensor characterized by a first operating point, at least one remaining FAIMS sensor characterized by an operating point associated with the remaining FAIMS sensor, and a controller configured to each FAIMS sensor in the sensor array;
operating the first FAIMS sensor in a high sensitivity mode;
detecting a possible event when a signal from the first FAIMS sensor exceeds a predetermined first threshold;
confirming the possible event when a signal from a remaining sensor in the sensor array exceeds a predetermined threshold associated with the remaining sensor;
repeating the step of confirming until each of the at least one remaining sensors in the sensor array has confirmed the possible event; and
registering an alarm when each of the at least one remaining FAIMS sensor has confirmed the possible event.
10 . The method of claim 9 wherein the step of confirming the possible event further comprises activating the remaining sensor in the sensor array.
11 . The method of claim 9 wherein the step of repeating further comprises resetting the sensor array when the at least one remaining sensor fails to confirm the possible event.
12 . The method of claim 11 wherein the step of resetting further comprises deactivating each of the at least one remaining sensor in the sensor array.
13 . The method of claim 9 wherein the operating point of each of the at least one remaining sensor in the sensor array corresponds to a different selectivity mode.
14 . The method of claim 9 wherein at least two FAIMS sensors of the sensor array are operated at a same operating point.
15 . The method of claim 9 wherein each of the at least one remaining FAIMS sensor is operated at a higher selectivity mode than the first FAIMS sensor.
16 . The method of claim 9 wherein each threshold value depends, in part, on the target analyte.
17 . The method of claim 9 wherein each threshold value depends, in part, on the operating point associated with the threshold value.
18 . The method of claim 9 wherein the step of registering an alarm further comprises transmitting the alarm to a central controller.