Water-mist-penetrating temperature measurement system and method for steel hot rolling

A temperature measurement method using a water-mist-penetrating temperature measurement system for steel hot rolling, the system comprising:

• a water-mist-penetrating temperature measurement device, wherein the water-mist-penetrating temperature measurement device comprises a visible light guiding-tracking assembly, an optical focusing assembly, a dual-wavelength beam splitting assembly, a multi-source information processing assembly, and a display assembly, the visible light guiding-tracking assembly is configured to determine a measurement view field of an object to be measured by guiding a visible light, and to achieve real-time tracking and monitoring of the object to be measured, and to receive a visible light image signal from the object to be measured;
• the optical focusing assembly is configured to focus an infrared radiation beam emitted from the object to be measured and guide it to the dual-wavelength beam splitting assembly;
• the dual-wavelength beam splitting assembly is configured to split the transmitted infrared radiation beam into two infrared radiation signals of different wavelengths and convert each infrared radiation signal into a corresponding electrical signal, and the multi-source information processing assembly is configured to fuse electrical signals with the visible light image signal received by the visible light guiding-tracking assembly through multi-source information integration, then send a processed image information and temperature information to the display assembly;
• and
• a high-pressure water jet cutting device, wherein the high-pressure water jet cutting device is configured to cut and thin cooling water sprayed from a nozzle directly above a rolled steel on a conveying roller bed of a steel hot-rolling production line, and the rolled steel serves as the object to be measured;
• the method comprising the steps of:
• step 1. obtaining the two infrared radiation signals of different wavelengths and the visible light image signal of the object to be measured;
• step 2. processing the obtained two infrared radiation signals of different wavelengths and the visible light image signal;
• and
• step 3. detecting and processing an abnormally fluctuated temperature data.