Apparatuses and methods for detecting the production of methamphetamine
First Claim
Patent Images
1. A system to detect methamphetamine production in a residential building, comprising:
- a sensor, the sensor is attachable to a part of a residential building, the sensor outputs a signal in response to detection of a concentration of a gas; and
a processor, the processor is electrically coupled to receive the signal and to process the signal to separate an event from a background level, the processor further comprising;
first memory elements to store the event; and
second memory elements to store a threshold time window value;
wherein the processor to compare a duration of the event to the threshold time window value, wherein two states result;
(1) if the duration of the event is equal to or greater than the threshold time window value a possible methamphetamine production detection is made independently of gas concentration existing above the background level during the event, and a warning signal is generated;
or(2) if the duration of the event is not equal to or greater than the threshold time window value then a non-methamphetamine production activity is detected and the warning signal is not generated.
0 Assignments
0 Petitions
Accused Products
Abstract
A system for detecting a gas released during production of methamphetamine in a residential building includes a sensor. The sensor is attached to a part of the residential building. The sensor outputs a signal in response to detection of a concentration of the gas up to a lower explosive limit of the gas. The system includes a communication link. The communication link receives a signal from the sensor and is configured to produce an output in response to the signal.
8 Citations
30 Claims
-
1. A system to detect methamphetamine production in a residential building, comprising:
-
a sensor, the sensor is attachable to a part of a residential building, the sensor outputs a signal in response to detection of a concentration of a gas; and a processor, the processor is electrically coupled to receive the signal and to process the signal to separate an event from a background level, the processor further comprising; first memory elements to store the event; and second memory elements to store a threshold time window value;
wherein the processor to compare a duration of the event to the threshold time window value, wherein two states result;(1) if the duration of the event is equal to or greater than the threshold time window value a possible methamphetamine production detection is made independently of gas concentration existing above the background level during the event, and a warning signal is generated;
or(2) if the duration of the event is not equal to or greater than the threshold time window value then a non-methamphetamine production activity is detected and the warning signal is not generated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A system for execution by a processing system to detect methamphetamine production in a residential building, the system comprising:
-
a processor; a sensor, the sensor is attachable to a part of the residential building, the sensor outputs a signal in response to detection of a concentration of a gas; an interface, the interface is electrically coupled to the sensor and to the processor, the interface to receive the signal, the processor to compare gas concentration over time to identify an event resulting in one of two states; (1) if a duration of the event is longer than a duration of a threshold time window value and a concentration of gas during the event reaches approximately 29 parts per million (ppm) then a possible methamphetamine production detection is made and a warning signal is generated;
or(2) if the duration of the event is not longer than the threshold time window value then the event is classified as a non-methamphetamine production activity and the warning signal is not generated; and a system controller, the system controller is in electrical communication with the processor, the system controller permits the threshold time window value to be set remotely.
-
-
16. A method to detect a gas released during production of methamphetamine in a residential building, comprising:
-
attaching a sensor to a part of a residential building, the sensor measures concentrations of gases; measuring a concentration of a gas with the sensor to identify an event at any concentration level of the gas; comparing the event with a threshold time window value; providing a notification of possible methamphetamine production if a duration of the event is equal to or greater than the threshold time window value; and classifying the event as a non-methamphetamine activity if the duration of the event is less than the threshold time window, wherein the notification is not provided. - View Dependent Claims (17, 18, 19, 20, 21)
-
-
22. A system for execution by a data processing system to detect a gas released during production of methamphetamine in a residential building, comprising:
-
means for measuring a concentration of a gas with a combustible gas sensor, the combustible gas sensor is mounted to the residential building; means for analyzing the concentration to identify an event; means for identifying a non-methamphetamine production activity when a duration of the event is less than a duration of a threshold time window value; and means for identifying a possible methamphetamine production detection when the duration of the event is equal to or greater than the threshold time window value. - View Dependent Claims (23)
-
-
24. A system for execution by a data processing system to detect methamphetamine production, the data processing system comprising:
-
a processor; a combustible gas sensor, the combustible gas sensor to output a signal in response to a concentration of a gas; a network connection, the network connection is coupled to the combustible gas sensor and the processor; and a non-transitory computer readable storage medium storing executable computer program instructions for causing the data processing system to perform steps comprising; receiving the signal from the combustible gas sensor, the combustible gas sensor is mounted to a residential building; analyzing the signal to identify an event; identifying a non-methamphetamine production activity when a duration of the event is less than a duration of a threshold time window value; and identifying a possible methamphetamine production detection when the duration of the event is equal to or greater than the threshold time window value. - View Dependent Claims (25, 26)
-
-
27. A computer readable storage medium storing executable computer program instructions for causing the data processing system to perform steps comprising:
-
receiving a signal from a combustible gas sensor, the combustible gas sensor is mounted to a residential building; analyzing the signal to identify an event, wherein the event occurs independently of gas concentration; identifying a non-methamphetamine production activity when a duration of the event is less than a duration of a threshold time window value; and identifying a possible methamphetamine production detection when the duration of the event is equal to or greater than the threshold time window value. - View Dependent Claims (28, 29, 30)
-
Specification