US 12,436,136 B2
Device for the detection of conditions indicative of illicit drug production
James Hansen, Te Awamutu (NZ); Bharath Bhaskar Atreya, Bangalore (IN); and Ashwath Maiya, Bangalore (IN)
Assigned to P Alert Limited, Te Awamutu (NZ)
Filed by P Alert Limited, Te Awamutu (NZ)
Filed on Feb. 29, 2024, as Appl. No. 18/591,824.
Application 18/591,824 is a continuation in part of application No. 16/472,589, abandoned, previously published as PCT/NZ2017/050170, filed on Dec. 21, 2017.
Prior Publication US 2024/0201155 A1, Jun. 20, 2024
Int. Cl. G01N 33/00 (2006.01)
CPC G01N 33/0047 (2013.01) [G01N 33/0059 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device for a detection of conditions indicative of production and/or use of methamphetamine hydrochloride, comprising:
a self-contained power source;
an airborne sensor configured to output a signal indicative of a presence of the methamphetamine hydrochloride;
at least one processor, configured to:
maintain the device in a low power sleep mode until a predetermined time condition is met;
preheat the airborne sensor for a first period of time and monitor the signal that is output by the airborne sensor;
preheat the airborne sensor for a second period of time on determining that the signal that is output by the airborne sensor meets a predetermined threshold,
wherein the second period of time is longer than the first period of time, and monitor the signal that is output by the airborne sensor;
on determining that the signal that is output by the airborne sensor meets the predetermined threshold following the preheating of the airborne sensor for the second period of time, transmit an alert to a remote location; and
wherein at least one interference sensor configured to output a first signal indicative of physical interference with the device, wherein the at least one processor is configured to interrupt the low power sleep mode on receiving the first signal indicative of the physical interference with the device from the at least one interference sensor.