矿井外因火灾感知方法

Mine external fire sensing method

为解决可见光图像在井下受矿灯、车灯、巷道灯、粉尘、红色物体等干扰大的问题,提出了基于近红外和可见光图像的矿井外因火灾感知方法,将近红外图像和可见光图像融合,发挥近红外图像中早期火焰特征明显、可见光图像中中期火焰特征明显的优点,以提高矿井外因火灾识别率。提出了基于近红外图像、可见光图像、温度传感器、气体传感器和烟雾传感器等多信息融合的矿井外因火灾感知方法,该方法融合了近红外图像、可见光图像和传感器信息,传感器不需要无盲区覆盖,仅需要设置一定数量的气体传感器、温度传感器和烟雾传感器,具有及时、可靠、成本低等优点。将报警信息分为图像、温度、烟雾和气体4类。图像类火灾报警信息包括近红外图像和可见光图像信息,当近红外图像或可见光图像监测到火灾时,发出图像类火灾报警信号;当温度超限时,发出温度类报警信号;当烟雾超限时,发出烟雾类报警信号;气体类火灾报警信息包括CO、CO_(2)、O_(2)等,当CO、CO_(2)或O_(2)超限时,发出气体类报警信号。将火灾报警分为蓝色、黄色、橙色和红色4级,红色为最高级。当图像类、温度类、烟雾类、气体类4类信息中有1类报警,发出火灾蓝色报警信号;当图像类、温度类、烟雾类、气体类4类信息中同时有2类报警,发出火灾黄色报警信号;当图像类、温度类、烟雾类、气体类4类信息中同时有3类报警,发出火灾橙色报警信号;当图像类、温度类、烟雾类、气体类4类全部报警,发出火灾红色报警信号。

In order to solve the problem that visible light images are greatly interfered by mine lights,car lights,roadway lights,dust and red object in mines,the mine external fire sensing method based on near-infrared and visible light images is proposed.The near-infrared images and visible light images are fused to bring into play the advantages of obvious early flame characteristics in near-infrared images and obvious mid-term flame characteristics in visible light images so as to improve the recognition rate of mine external fire.This paper proposes a mine external fire sensing method based on multiple information fusion of near-infrared image,visible light image,temperature sensor,gas sensor and smoke sensor.The method fuses near-infrared image,visible image and sensor information.The sensor does not need no blind area coverage.Only a certain number of gas sensors,temperature sensors and smoke sensors need to be set up,which has the advantages of being timely,reliable and low-cost.The fire alarms are divided into four categories,including the image,temperature,smoke and gas fire alarms.The image fire alarm information includes near-infrared image and visible light image information.When the fire is detected by near-infrared image or visible light image,the image fire alarm signal is issued.When the temperature exceeds the limit,the temperature alarm signal is issued.When the smoke exceeds the limit,the smoke alarm signal is issued.The gas fire alarm information includes CO,CO_(2),O_(2),etc.When CO,CO_(2) or O_(2) exceeds the limit,the gas alarm signal is issued.The fire alarms are divided into four levels,including blue,yellow,orange and red,with red being the highest level.When one of the four alarm signals of image,temperature,smoke and gas issued,the blue alarm signal is issued.When two of the four alarm signals of image,temperature,smoke and gas issued,the yellow alarm signal is issued.When three of the four alarm signals of image,temperature,smoke and gas issued,the orange alarm signal is issued.When all four alarm signals of image,temperature,smoke and gas issued,the red alarm signal is issued.