Forest fire early-warning system and method based on infrared thermal imaging technology
First Claim
1. A forest fire alarm system based on infrared thermal imaging technology comprising:
- an infrared camera located within a monitored area for monitoring and early fire warning in a forest, the infrared camera configured to capture infrared thermal images of said monitored area, and to transmit infrared thermal analog signals which contain temperature measurement values T relating to the infrared thermal images of the monitored area, and wherein the infrared camera includes a frontal temperature measurement and alarm module configured to;
determine a preset alarm temperature Tset either set as a constant value or a variable constant value based on both statistical values of the temperature measurement values T and fire temperature in the monitored area;
determine an isothermal allowed width δ
t either set as a constant temperature difference value or a variable temperature difference value based on both the statistical values of the temperature measurement values T and the fire temperature in the monitored area;
determine an average temperature TS of a reference area S within the monitored area;
calculate, based on changes of environmental temperature parameters including at least one of distance, temperature difference and alternate seasons, an alarm temperature value Talarm determined as a sum of the average temperature TS and the isothermal allowed width δ
t; and
transmit alarm signals when a hottest temperature spot Th automatically captured based on the temperature measurement values T exceeds the lower of the alarm temperature Tset and the alarm temperature value Talarm.
1 Assignment
0 Petitions
Accused Products
Abstract
A forest fire early-warning system based on infrared thermal imaging technology includes an infrared camera erected in a forest to capture infrared thermal images of an area being monitored. The camera includes a frontal temperature detection and alarm module for calculating the alarm temperature value by using a temperature monitoring mathematical model, and for transmitting an excessive temperature alarm signal when there are abnormalities in said area. A video conversion device connected to the infrared camera converts an infrared thermal image analog signal outputted by the camera into an infrared digital signal, and receives from the camera said alarm signal and converts same into a digital signal. A monitoring computer generates and transmits an infrared camera control signal, and processes the infrared digital signal to ascertain the location in the monitoring area that triggered the infrared camera alarm.
-
Citations
17 Claims
-
1. A forest fire alarm system based on infrared thermal imaging technology comprising:
an infrared camera located within a monitored area for monitoring and early fire warning in a forest, the infrared camera configured to capture infrared thermal images of said monitored area, and to transmit infrared thermal analog signals which contain temperature measurement values T relating to the infrared thermal images of the monitored area, and wherein the infrared camera includes a frontal temperature measurement and alarm module configured to; determine a preset alarm temperature Tset either set as a constant value or a variable constant value based on both statistical values of the temperature measurement values T and fire temperature in the monitored area; determine an isothermal allowed width δ
t either set as a constant temperature difference value or a variable temperature difference value based on both the statistical values of the temperature measurement values T and the fire temperature in the monitored area;determine an average temperature TS of a reference area S within the monitored area; calculate, based on changes of environmental temperature parameters including at least one of distance, temperature difference and alternate seasons, an alarm temperature value Talarm determined as a sum of the average temperature TS and the isothermal allowed width δ
t; andtransmit alarm signals when a hottest temperature spot Th automatically captured based on the temperature measurement values T exceeds the lower of the alarm temperature Tset and the alarm temperature value Talarm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
14. A forest fire alarm method based on an infrared imaging technology utilizing a forest fire alarm system, the method comprising:
-
capturing infrared thermal images of a monitored area with an infrared camera, the infrared thermal images indicating temperature measurement values T; determining a preset alarm temperature Tset either set as a constant value or a variable constant value based on both statistical values of the temperature measurement values T and fire temperature in the monitored area; determining an isothermal allowed width δ
t either set as a constant temperature difference value or a variable temperature difference value based on both the statistical values of the temperature measurement values T and the fire temperature in the monitored area;determining an average temperature TS of a reference area S within the monitored area; calculating an alarm temperature value Talarm as a sum of the average temperature Ts and the isothermal allowed width δ
t; andtransmitting alarm signals to a monitoring computer when a hottest temperature spot Th automatically captured based on the temperature measurement values T exceeds the lower of the alarm temperature Tset and the alarm temperature value Talarm. - View Dependent Claims (15, 16, 17)
-
Specification