Tobacco bale breaking detection device and method based on photoelectric dynamic scanning technology

Abstract

The invention discloses a tobacco bale breaking detection device and method based on a photoelectric dynamic scanning technology. The tobacco bale breaking detection device comprises a sensor assembly, a rack, a controller, a proximity switch and an encoder. The sensor assembly comprises an upper side left sensor, an upper side right sensor, a lower side left sensor and a lower side right sensor; each sensor comprises a driving circuit, an amplifying circuit, a light emitting circuit and a photosensitive circuit; and the controller comprises a core control unit, a single chip microcomputer, an A / D sampling circuit and an input and output circuit. The device of the invention dynamically collects a voltage value of each sensor according to the phase of a packaging machine, not only can detect whether transparent paper of a tobacco bale has missing, wrinkling and other bale breaking defects, but also can detect the width of the transparent paper, draws the voltage into a waveform curve, facilitates related personnel to analyze the operation state of the packaging machine, and tobacco bales with the bale breaking defects are effectively prevented from flowing into the market, and wide application space and market value are achieved.

Description

technical field [0001] The invention belongs to the field of cigarette package detection, and in particular relates to a device and method for detecting unpacked cigarette packs based on photoelectric dynamic scanning technology. Background technique [0002] Small box packaging Transparent paper packaging is one of the important processes of small box packaging. Cigarette manufacturers have always paid attention to the inspection of small box transparent paper loose packages. There are many reasons that can cause small packs of transparent paper to be scattered, such as static electricity on the transparent paper, wear of the cutting parts of the small pack transparent paper machine, wear of the fan-shaped conveying wheel, gap between the cigarette pack forming hexagonal wheel and the fixed arc baffle, etc. For a long time, cigarette manufacturers have been troubled by the defect detection of small boxes of transparent paper loose packs. [0003] There are three main tradi...

AI Technical Summary

Problems solved by technology

There are certain limitations in the mechanical detection of loose packages of transparent paper. It is detected by touching the mechanical lever through the transparent paper of loose packages, but it cannot cover all the positions of the front and back sides of the small package. If the position of the loose package fails to touch the lever Or it is not in contact with the lever, then it is easy to miss detection

The visual inspection operation is more complicated, and multiple parameters need to be set, and the false detection rate is higher when the color of the transparent paper and the small box packaging paper are relatively similar, and the change of dust and lighting brightness will also lead to false detection and missed detection

The use of static photoelectric detection not only requires high installation requirements, but also can only collect the signal state of the switch at a single point at a certain moment to judge whether it is scattered or not. It is easily affected by factors such as the external environment and structural parts, and the false detection rate and missed detection rate. also higher

[0004] All cigarette manufacturers regard loose pack defects as major quality accidents. If cigarette packs with loose pack defects cannot be detected accurately and flow into the market, it will have a negative impact on corporate reputation

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