Intelligent image smoke/flame sensor and detection system
First Claim
1. An intelligent image smoke/flame sensor, comprised of an image sensor, a DSP processor, an input/output circuit, an infrared lamp and filter assembly, a casing, a window glass, a front cover, and a rear cover, said DSP processor providing an operation algorithm of statistics of t time serial image characteristics matching and probability fusion calculation, which includes the steps of:
- (i) the system picks up a length L of serial images for at t time;
(ii) the system makes sure of fixed background characteristics by means of self-learning, in which the cycle for long cycle background to be TL and the cycle for short cycle background to be TS;
(iii) the system analyzes the serial images of length m obtained at t time, obtaining the differences and variation between each two images, the differences and variation between each image and the short cycle background image, and the differences and variation between each image and the long cycle background image;
(iv) the system calculates every characteristic parameter and matches the calculated characteristic parameters with flame/smoke characteristics, so as to set FCi and SCj to be 1 if the radio of successful matching images reaches a predetermined value or to be −
1 if the radio of successful matching images is below the predetermined value;
(v) the system starts a first stage data fusion subject to different characteristic weights, thereby obtaining flame probability incremental amount and smoke probability incremental amount to be Δ
PF(t) and Δ
PS(t) respectively; and
(vi) the system starts a second stage data fusion to obtain a fire probability P(t) at t time.
1 Assignment
0 Petitions
Accused Products
Abstract
An intelligent image smoke/flame/complex intelligent image smoke/flame sensor, and an intelligent image smoke/flame detection system formed of such an intelligent image smoke/flame/complex intelligent image smoke/flame sensor. The intelligent image smoke/flame sensor is formed of an image sensor, for example, CCD (Charge-coupled Device), a DSP Processor, an input/output circuit, an infrared lamp and filter assembly, a casing, a window glass, a front cover, and a rear cover. The intelligent image smoke/flame detection system accurately detects fire characteristics including smoke and flame, producing an early alarm to lower catastrophe.
9 Citations
8 Claims
-
1. An intelligent image smoke/flame sensor, comprised of an image sensor, a DSP processor, an input/output circuit, an infrared lamp and filter assembly, a casing, a window glass, a front cover, and a rear cover, said DSP processor providing an operation algorithm of statistics of t time serial image characteristics matching and probability fusion calculation, which includes the steps of:
-
(i) the system picks up a length L of serial images for at t time; (ii) the system makes sure of fixed background characteristics by means of self-learning, in which the cycle for long cycle background to be TL and the cycle for short cycle background to be TS; (iii) the system analyzes the serial images of length m obtained at t time, obtaining the differences and variation between each two images, the differences and variation between each image and the short cycle background image, and the differences and variation between each image and the long cycle background image; (iv) the system calculates every characteristic parameter and matches the calculated characteristic parameters with flame/smoke characteristics, so as to set FCi and SCj to be 1 if the radio of successful matching images reaches a predetermined value or to be −
1 if the radio of successful matching images is below the predetermined value;(v) the system starts a first stage data fusion subject to different characteristic weights, thereby obtaining flame probability incremental amount and smoke probability incremental amount to be Δ
PF(t) and Δ
PS(t) respectively; and(vi) the system starts a second stage data fusion to obtain a fire probability P(t) at t time. - View Dependent Claims (2, 3, 4, 6, 7, 8)
-
-
5. An intelligent image smoke/flame sensor, comprised of an image sensor (charge-coupled device), a DSP processor, an input/output circuit, an infrared lamp and filter assembly, a casing, a window glass, a front cover, a rear cover, and a signal processors of ultraviolet/infrared fire sensors, said DSP processor providing an operation algorithm with a fire probability fusion data obtained from different fire sensors for obtaining at time fire probability by means of adding to data fusion flow the fire characteristic probability incremental amount obtained through a probability incremental amount and image analysis.
Specification