Dynamic detection device for plate blank width based on FPGA (Field Programmable Gate Array) and laser triangulation measurement

Abstract

The invention discloses a dynamic detection device for the plate blank width based on an FPGA (Field Programmable Gate Array) and laser triangulation measurement. The dynamic detection device comprises a roller bed, two laser triangulation rangefinders and a plate blank width measurement centralized controller taking the FPGA as a core, and is characterized in that the two laser triangulation rangefinders are installed at two sides of the roller bed respectively, a clock frequency division module is in one-way connection with a distance data analysis module, a plate blank width calculation module, a liquid crystal display driving module, a D / A conversion driving module and an RS-485 communication module, the distance data analysis module is in one-way connection with the plate blank width calculation module, and the plate blank width calculation module is in one-way connection with the liquid crystal display driving module, the D / A conversion driving module and the RS-485 communication module. The dynamic detection device has the characteristics of non-contact measurement, high accuracy, high response speed, high anti-interference ability, convenient field installation and the like.

Description

technical field [0001] The invention relates to a device for realizing high-speed dynamic width detection of a moving slab, which belongs to the field of optical computing equipment, in particular to a device for dynamically detecting the width of a slab based on FPGA and laser triangulation distance measurement. Background technique [0002] In hot rolling mills of the metallurgical industry, slab width is an important factor affecting the quality of hot-rolled strip products. If the slab width is less than the predetermined value, it will lead to quality defects of subsequent strip steel products; if the slab is too wide, it will lead to loss of raw materials, and even serious failures such as jamming and equipment damage. Therefore, slab width measurement is a must in the production of modern steel mills. an important parameter. [0003] Authorized announcement number is given in the document of CN 102847901 B " a kind of method for controlling the width of ferritic stai...

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Problems solved by technology

[0009] These papers theoretically studied the slab width control model, and proposed to realize the measurement of the steel plate and strip width through the principle of binocular vision and optical imaging. The width measuring instrument is installed about 2m above the roller table. Under the working conditions of , water vapor and dust, the width measuring instrument requires high maintenance, and the measurement accuracy and stability are difficult to guarantee

Moreover, the weight and heat radiation of the slab are dozens of times that of the steel plate, so the slab width measurement solution with a CCD width gauge installed above the roller table cannot operate stably and reliably for a long time

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