Key Technology Research And Implementation Of Surface Defects Inspection On Hard Capsule

In recent years, pharmacy security has always been a key problem that government t rying to deal with and has drawn attention to the public and media. Capsule, of course, re mains a focus relating to pharmacy security. Human vision inspection is applied to inspe ct capsule detects after using some inspection machines, but these techniques are unable to meet the needs of capsule manufacturing requirements. Company is restricted in devel opment correspondingly. Machine vision and image processing technology can not only boost inspection efficiency and accuracy, but also replace human vision inspection. Imag e processing involves converting image signal into digital signal that computer takes in a nd calculate the data, a significant technique because it’s much objective, highly-efficien t, accurate and non-contacting.The arising of domestic inspection machine has totally changed human inspection a nd of course capsule quality also improved. Potential second contamination is avoided. B ut these domestic machines are genetically deficient and usually transformed from the ca psule printing machine, undesirable results are seen such as bad surface unfolding, high omission ratio, low speed and high cost, etc. The study mainly researches providing key solutions to improve the property of capsule inspection machine.The study has proposed multiple features of black-white, colored camera, informati on fusion of multiple cameras to complete capsule image capturing. Capsule surface ima ging using photoelectric sensor and encoder trigger scheme is researched by studying the black-white, colored cameras of different locations, which can ultimately obtain surface image and reduce computer memory consumption. As to large size of image data and on-line multi-thread operation, study has used image processing library Halcon to run parall el computation. Multi-thread operation and strategy of image processing have improved speed. Defects kicking scheme is researched using electromagnet and magnetic valve, so on-ff control circuit has been designed t meet the needs of on-line kicking. Key feature i n the study is that multiple strategies ensure the fastness, stability, and precision of capsu le inspection.