CN-112149657-B - Cigarette surface text pattern detecting system

CN112149657BCN 112149657 BCN112149657 BCN 112149657BCN-112149657-B

Abstract

The invention relates to the technical field of detection equipment and discloses a cigarette surface text pattern detection system which comprises an industrial camera arranged on conveying equipment, wherein a shielding strip is stuck at one end of the industrial camera facing the conveying equipment, a processing equipment is electrically connected with the industrial camera, and a pneumatic removing device is electrically connected with the processing equipment, wherein the pneumatic removing device is arranged on the conveying equipment and shields a lens part of the industrial camera through the shielding strip, so that the industrial camera only photographs a part of an error-prone part area on a text pattern on the outer surface of a cigarette, the original detection problem of hundreds of thousands of pixels is converted into the detection problem of hundreds of pixels, and the detection speed of the text pattern on the outer surface of the cigarette is improved on the basis of ensuring the detection quality.

Inventors

HU XINGFENG
TANG JIE
XU JIADONG
ZHOU HAO
Qin Zixian
HE CHUNLI
TAN GUANGLU
ZHU LIJUN
HUANG ZHI
Lv Xiangmin
CAI LI
ZHU LING
PENG ZHONG
ZHOU WEI

Assignees

重庆中烟工业有限责任公司
重庆中烟工业有限责任公司

Dates

Publication Date: 20260421
Application Date: 20201015
Priority Date: 20201015

Claims (6)

1. A cigarette surface text pattern detection system is characterized by comprising a conveying device and an industrial camera mounted on the conveying device, wherein a shielding strip is stuck to one end, facing the conveying device, of the industrial camera, the industrial camera is electrically connected with a processing device and a pneumatic removing device electrically connected with the processing device, the pneumatic removing device is mounted on the conveying device, the industrial camera comprises a camera body and a capping body, the camera body is electrically connected with the processing device, the capping body is detachably connected with the camera body, the capping body is positioned between the camera body and the conveying device, and the shielding strip is stuck to the capping body, so that the industrial camera only photographs the stroke intersection and the stroke end of a cigarette surface text pattern.
2. The system for detecting the text and the pattern on the surface of a cigarette according to claim 1, wherein the system further comprises a first lighting device and a second lighting device, the first lighting device and the second lighting device are irradiated on the conveying device in an included angle, the number of the industrial cameras is two, and the two industrial cameras are respectively positioned on refractive lines of the first lighting device and the second lighting device.
3. The system of claim 2, wherein the processing device comprises a median filter and a chip assembly, the median filter is electrically connected with the industrial camera, the chip assembly is electrically connected with the median filter, and the pneumatic removing device is electrically connected with the chip assembly.
4. The system of claim 3, wherein the processing device further comprises a binarization processor, the binarization processor is electrically connected with the median filter, and the chip component is electrically connected with the binarization processor.
5. The system of claim 4, wherein the chip assembly comprises a data conversion chip and a threshold value determination chip, the data conversion chip is electrically connected with the binarization processor, the threshold value determination chip is electrically connected with the data conversion chip, and the pneumatic rejecting device is electrically connected with the threshold value determination chip.
6. The system for detecting the character and pattern on the surface of the cigarette according to any one of claims 1 to 5, wherein the pneumatic removing device comprises a compressed air source, an air pipe, electromagnetic valves and air nozzles, the compressed air source is arranged on the conveying device, one end of the air pipe is communicated with the compressed air source, the air outlet end of the air nozzle faces the conveying device, the electromagnetic valves are arranged on the air pipe, the number of the air nozzles is multiple, the air nozzles are uniformly arranged on the air pipe, and valves are arranged between two adjacent air pipes.

Description

Cigarette surface text pattern detecting system Technical Field The invention relates to the technical field of detection equipment, in particular to a system for detecting characters and patterns on the surface of a cigarette. Background The method comprises the steps of printing characters for marking brand information on the outer surface of a cigarette, detecting the characters and patterns on the surface of the cigarette if the characters and patterns on the surface of the cigarette are more or less printed as defective cigarettes, detecting the production of the cigarette on line by adopting a machine vision system, and then removing the cigarette with the found defective characters on the surface. However, the production speed of cigarettes on a production line is close to tens of thousands of cigarettes per minute, the average detection time of each cigarette is only a few milliseconds, if the cigarettes are processed by a chip with general processing capacity, the processing speed is far from the production speed of the cigarettes, and if the cigarettes are processed by a chip with high-performance processing capacity, the cost is too high. Disclosure of Invention In view of the above, the present invention aims to provide a system for detecting text and patterns on the surface of a cigarette, which can simultaneously have the speed and cost of detecting the cigarette. The invention solves the technical problems by the following technical means: A cigarette surface text pattern detection system comprises a conveying device and an industrial camera mounted on the conveying device, wherein a shielding strip is stuck to one end, facing the conveying device, of the industrial camera, a processing device is electrically connected with the industrial camera, a pneumatic removing device is electrically connected with the processing device, the pneumatic removing device is mounted on the conveying device, the industrial camera comprises a camera body and a capping body, the camera body is electrically connected with the processing device, the capping body is detachably connected with the camera body, the capping body is located between the camera body and the conveying device, and the shielding strip is stuck to the capping body. Further, the detection system further comprises a first lighting device and a second lighting device, the first lighting device and the second lighting device are arranged on the conveying device in an included angle irradiation mode, the number of the industrial cameras is two, and the two industrial cameras are respectively arranged on refractive lines of the first lighting device and the second lighting device. Further, the processing equipment comprises a median filter and a chip component, the median filter is electrically connected with the industrial camera, the chip component is electrically connected with the median filter, and the pneumatic rejecting equipment is electrically connected with the chip component. Further, the processing device further comprises a binarization processor, the binarization processor is electrically connected with the median filter, and the chip component is electrically connected with the binarization processor. Further, the chip assembly comprises a data conversion chip and a threshold value judging chip, the data conversion chip is electrically connected with the binarization processor, the threshold value judging chip is electrically connected with the data conversion chip, and the pneumatic rejecting equipment is electrically connected with the threshold value judging chip. Further, pneumatic rejecting equipment includes compressed air source, trachea, solenoid valve and air cock, and compressed air source installs on transfer apparatus, tracheal one end and compressed air source intercommunication, the end of giving vent to anger of air cock is towards transfer apparatus, and the solenoid valve is installed on the trachea, and the quantity of air cock is many, and many air cock evenly set up on the trachea, are equipped with the valve between the two adjacent trachea. The invention has the beneficial effects that: 1. According to the invention, the lens part of the industrial camera is shielded by the shielding strip, so that the industrial camera only photographs a part of the area which is easy to make mistakes on the text and the pattern on the outer surface of the cigarette, the original detection problem of hundreds of thousands of pixels is converted into the detection problem of hundreds of pixels, and the detection speed of the text and the pattern on the outer surface of the cigarette is improved on the basis of ensuring the detection quality. 2. According to the invention, different shielding strips are adhered to the cover body, and then the corresponding cover body is connected to the camera body, so that various cigarettes with different text patterns can be continuously connected. 3. According to the invention, the first lig