Research On Fixed-length Spraying Mark Detection System Of The Collagen Casing

Currently, comptroller cutting is more used to cut collagen casings to length in the domestic market. When the casings through the pipeline device starts length counting. And when length counting reaches a length calibration, control terminal will sent cut command to the shearing device to control cutter cut. Because of uneven speed of casings, different degrees of folds after folding device and absence of cutting identification, there is great error when casings is expanded to be cut, and thus causing huge losses and waste to enterprise.This thesis presents a new shear method about collagen casing fixed length, Spraying Mark Detection. We design and development a high-precision collagen casing fixed length spraying mark detection System, based on the ARM Cortex-M4 core microprocessor as the main chip TM4C123GH6 PM, with optical rotary encoders, inkjet printer, digital color-sensing fiber sensor as the main executive element, combined with the company's existing casings telescopically device, the shearing device. Spraying mark detection system is mainly based on the principle of optical rotary encoder length counting, Inkjet marking and coding theory and digital color-sensing fiber sensor's detection principle to achieve the exact length of the casings. Design of the system includes hardware and software control. Hardware circuit design includes a selection of TivaC templates, functional circuit design and human-computer interaction systems. Software control includes ARM software development tools introduced, MCU resource allocation, detection system main program and interrupt subroutine design, and software design of human-computer interaction system.Finally, we set up a casings cutting experimental platform based on the fixed length spraying mark detection System, and verify the feasibility of the system on line production. Then, we analyze the factors affecting the spraying mark accuracy and the cutting accuracy, find a suitable line installation program for the system, and complete the optimization system initially. The preliminary results of the production of practice show that the casings cutting accuracy has been greatly improved, the cut error decreased from ±0.3m to ±0.1m, and the cost of production of each casings can be reduced 4%. This greatly improves the competitiveness of enterprises, and has a very important industrial application value.