Smoking is not only harmful to health, random throwing cigarette butts is more likely to cause fire. A cigarette usually burns for about 10 minutes, and discarded butts burn for about 1 to 4 minutes depending on the length of the cigarette. The surface temperature of cigarette butts is 200~300℃, and the central temperature of burning cigarettes is 700~800℃. The ignition point of most combustibles is lower than this temperature, such as paper burning point 130℃, cotton burning point 210~255℃, natural rubber burning point 129℃, wood burning point 250~300℃, wheat straw burning point 200℃, polyester fiber burning point 390℃. The central temperature of cigarette butts is 2~5 times of the above material ignition point, therefore, cigarette butts are extremely prone to fire.

Gas stations and many public areas have no smoking sign, in the gas station, gas in a liquid usually stored in the tank, the gas temperature vaporization occur easily by the liquid into a gas diffusion into the air, the gas station near the gas content is higher in the air, meet spark explosion accident easily, therefore, the gas stations when smoking is prohibited.

In order to better solve the problem of smoking in public places, monitoring equipment can be used for monitoring. When someone is found smoking in the factory, an alarm will be issued and staff will timely dissuade him to avoid accidents. General visible light monitoring is difficult to achieve automatic smoking monitoring alarm, but infrared thermal imaging camera can monitor and measure the temperature, so as to achieve smoking alarm, what is this principle?

Since anything above absolute zero emits infrared radiation, the higher the temperature, the stronger the infrared radiation. The thermal imager receives the infrared radiation of the object to form infrared image with temperature, and the temperature of the cigarette end is higher than the surrounding environment. When the thermal imager takes the photo of the cigarette end, the temperature displayed on the picture will be higher than the surrounding environment. It can remind the staff through alarm, take timely measures, efficient and convenient.