WO2006008819A1 - 溶液中の異物検査方法およびその装置 - Google Patents
溶液中の異物検査方法およびその装置 Download PDFInfo
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- WO2006008819A1 WO2006008819A1 PCT/JP2004/010420 JP2004010420W WO2006008819A1 WO 2006008819 A1 WO2006008819 A1 WO 2006008819A1 JP 2004010420 W JP2004010420 W JP 2004010420W WO 2006008819 A1 WO2006008819 A1 WO 2006008819A1
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- WIPO (PCT)
- Prior art keywords
- image
- solution
- foreign matter
- transparent container
- rotating
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9018—Dirt detection in containers
- G01N21/9027—Dirt detection in containers in containers after filling
Definitions
- the present invention relates to detection of foreign matter mixed in a liquid agent by photographing a transparent container containing the liquid agent from the outside of the transparent container and detecting the presence or absence of foreign matters mixed in the liquid agent from the obtained image.
- Freeze-dried preparations are usually sold in a glass container.
- this lyophilized preparation is inspected for foreign substances contained in the liquid before the lyophilization.
- a solution of a lyophilized preparation before lyophilization is contained in a glass container, the photographed image is photographed with a CCD camera, and the obtained image is image-processed to introduce mixed foreign matter. Is detected.
- a glass container containing a liquid agent is rotated once, and an image before rotation and an image after rotation are taken with a CCD camera. Then, the two images are compared, and a moving object is detected as a foreign object. Since the position of the scratches present in the glass container does not change before and after the rotation, it is possible to detect contaminants by excluding them.
- the conventional example has a problem that the position of the scratch on the glass container differs between the two images unless the rotation control is performed with very high accuracy.
- relatively large foreign objects can be detected almost completely because their positions are usually greatly different before and after rotation.
- the presence or absence of mixed foreign matter is determined by comparing three images: a reference image, an image after rotation, and an image after progress. For this reason, both large foreign substances and small foreign substances can be detected separately from scratches on the transparent container. In other words, because large foreign objects move differently from the transparent container due to rotation, there is a large difference from the comparison between the reference image and the rotated image. Objects can be detected easily. In addition, since the small foreign matter moves as the liquid agent moves after the rotation, the small foreign matter can be detected separately from the scratch on the transparent container in the comparison between the rotated image and the post-lapse image.
- the rotated image is an image obtained by photographing the transparent container with substantially the same directional force, the images can be easily compared.
- the transparent container can be easily stopped at substantially the same rotational position.
- the present invention also relates to an apparatus for performing the above-described method.
- FIG. 1 is a block diagram showing a configuration of an embodiment.
- FIG. 2 is a side view and a plan view at an inspection place according to the embodiment.
- FIG. 3 is a diagram showing a state of a reference image A before rotation of the glass container, an image B after rotation after one rotation, and an image C after elapse of a certain time.
- FIG. 4 is a flowchart of image processing.
- FIG. 5 is a flowchart of the entire process.
- FIG. 6 is a view showing another example of the rotation of the glass container.
- FIG. 7 is a diagram showing a configuration example for rotating a glass container.
- FIG. 8 is a diagram for explaining the movement of a foreign object during rotation of a glass container.
- FIG. 1 is a block diagram showing an overall configuration of a foreign matter contamination inspection apparatus according to the present embodiment.
- the transparent container (vial bottle) 10 containing the liquid before lyophilization is transported by the transport device 12 and reaches the inspection place 14.
- the inspection place 14 is provided with an illuminating device 16 below and a pair of CCD cameras 18a and 18b on the sides.
- the vial 10 is usually made of glass.
- FIG. 2 (i) is a front view and (mouth) is a plan view.
- the transport device 12 has rails 20a and 20b that support the neck portion of the vial 10 also with both side forces. Therefore In the upper area of the vial 10, no equipment is arranged.
- a rotation belt 22 is positioned on one side of the vial bin 10, and a pair of gripping rollers 24a and 24b are positioned on the other side. That is, the side portion of the vial 10 is supported at three points in the horizontal plane by the rotating belt 22 and the pair of gripping rollers 24a and 24b, and the vertical direction of the vial 10 is supported by the lenore 20a and 20b force S. Talk to me.
- an illumination device 16 having an LED, a halogen lamp, or the like is provided below the inspection place 14, and illuminates the vial 10 from the bottom.
- the CCD cameras 18a and 18b are positioned so as to take an image of the liquid in the vial 10 from about 15 degrees above the horizontal plane, and both the CCD cameras 18a and 18b are spaced from each other by about 60 degrees. Acquire the bottom image of Yarbin 10.
- the light from the illumination device 16 is not emitted toward the CCD cameras 18a and 18b. Therefore, the reflected light from the foreign object is photographed by the CCD cameras 18a and 18b.
- the pair of gripping rollers 24a and 24b are fixed to the conveyor belt 26, and the vial bottle 10 is moved along the rails 20a and 20b by the movement of the conveyor belt 26.
- the vial bottle 10 can be rotated by moving the rotating belt 22 at a sufficiently high speed relative to the moving speed of the conveying belt 26.
- a bottle detection device 40 is provided in front of the inspection place 14 to detect the vial bin 10 entering the inspection place 14 and supply a detection signal to the controller 30.
- the CCD cameras 18a and 18b are movable by a camera driving mechanism 42.
- the bin detector 40 is preferably a transmitted light type or reflected light type optical detector.
- the controller 30 moves the vial bottle 10 to the inspection place 14 by moving it at the same speed (constant speed) as the rotation belt 22 and the conveyance belt 26.
- the vial detection device 40 detects the vial bin 10 and the vial bin 10 enters the inspection place 14
- the CCD camera 18a, 18b is moved in synchronization with the vial bin 10 by the camera drive mechanism 42.
- the CCD cameras 18a and 18b sequentially take images of the vials 10 entering the inspection location 14, so that the vicinity of the entrance of the inspection location 14 is the origin and the vicinity of the exit is the end point. Return to the origin and prepare for the next vial 10 shot.
- the rotation belt 22 is moved to the speed of the conveyor belt 26.
- the vial 10 is rotated once by moving at a speed greater than the degree. That is, at the inspection place 14, the vial bottle 10 is rotated once, and the vial bottle 10 is kept non-rotated before and after that.
- the CCD cameras 18a and 18b can also follow the movement of the vial bin 10 to obtain a plurality of images of the vial bin 10 from the same direction.
- the vial 10 is rotated by the rotation belt 22 at a rotation speed of, for example, about 200 to 400 i "pm.
- the time required for one rotation is about 150 to 300 msec.
- the speed at which the vial bottle 10 is transported is about 100 bottles / min, and these conditions are determined by the configuration of the machinery and equipment and will be changed accordingly.
- the movement of the rotation belt 22 and the gripping rollers 24a, 24b is stopped at the inspection place 14, and in the stopped state, the rotation belt 22 is moved and the vial bottle 10 is rotated once. Also good. Furthermore, the moving direction of the rotating belt 22 during one rotation of the vial bin 10 may be opposite to the conveying direction of the vial bin 10 (moving direction of the conveying belt 26). Also, the number of rotations is not limited to one and may be several or more. If the rotation is not an integer number of times, the direction of the obtained image will be different, but if it is a certain difference, it can be corrected by image processing and does not necessarily have to be an integer number of rotations.
- the vial bottle 10 can be rotated once at the inspection location 14, and the image of the liquid agent in the vial bottle 10 at this time can be obtained with a pair of CCD cameras 18a and 18b. .
- the acquired image signal is supplied to the controller 30.
- a rotation belt drive mechanism 32 that moves the rotation belt 22 is also connected to the controller 30, and the controller 30 can control the rotation of the vial 10.
- the controller 30 uses the CCD cameras 18a and 18b to perform the reference image A before the vial 10 rotation, the image B after the rotation after one rotation (immediately), and then a predetermined time. Acquire three images after image C.
- the post-rotation image B needs to be taken before the inertial movement of the liquid agent 40 is completed, and is preferably immediately after the rotation is stopped.
- a display device 34 is connected to the controller 30, and images obtained by the CCD cameras 18a and 18b are displayed.
- the controller 30 is connected to a data processing device 36, which performs image recognition processing on image data obtained by the CCD cameras 18a and 18b supplied with the controller 30. Based on the result of the image recognition processing, foreign matter in the liquid 40 is detected, and when the foreign matter is detected, a determination signal is sent to the discharge device 38, and the vial 10 in which the foreign matter is detected is transferred to the transport system. It also discharges power. The foreign object detection result is also sent to the display device 34, where it is displayed.
- a cylindrical glass container (vial bottle) 10 containing the pre-drying solution of the freeze-dried preparation reaches the inspection site 14 in a non-rotating state. Then, a non-rotated image (image before rotation) is taken with the CCD cameras 18a and 18b in a state irradiated with the illumination device 16 from below, and a reference image is obtained.
- the rotating belt 22 is moved at a high speed, and the vial bottle 10 is rotated exactly once.
- the controller 30 controls one rotation by controlling the rotation of the rotation belt drive mechanism 32.
- the image after one rotation is obtained by the CCD cameras 18a and 18b.
- an image having the same directional force can be obtained as the reference image.
- FIG. 3 schematically illustrates an example of the reference image A, the rotated image B, and the elapsed image C.
- the vial bottle 10 contains liquid zero.
- Bianolebin 10 has a wound 42.
- the large foreign matter 44, 44 'and the small foreign matter 46, 46' in the liquid 40 both have their position changing force.
- the amount of deviation is equal to the amount of deviation of the scratches 42, 42 'or Smaller foreign objects are those that change less than that, and 46, 46 'are the deviations.
- the elapsed image C after being in a non-rotated state for a predetermined time and the rotated image B are compared. Even if the rotation is stopped, the liquid in the vial 10 is moved by inertia. Therefore, the small foreign matter 46 'in the liquid moves with the liquid. Therefore, in the post-elapse image C, it is recognized as a small foreign object 46 ". On the other hand, since the vial bottle 10 does not rotate, the wound 42 'does not move at all. After the lapse of time Compared with image C, since there is no mechanical error, the movement of the flaw 42 'can be confirmed at the same position and the same size, while the small foreign objects 46' and 46 "move.
- the small foreign matter 46 can be distinguished from the scratch 42 and recognized. It should be noted that even if the liquid 40 moves, the large foreign matter 44 ', 44 "may not move. This is not a problem because it can be detected by comparing the reference image A and the rotated image B.
- This image processing will be described with reference to FIG.
- pre-processing is first performed (Sl).
- This pre-processing SI Is common to the three images, removes the image of vial 10 that is a large object, etc., cuts out noise that is a very small change, detects edges, enhances features, etc. Perform image correction processing. As a result, the object to be inspected is extracted.
- a comparison process is performed on the reference image A that has undergone the pre-processing of S1 and the rotated image B (
- This comparison is performed by comparing the position (center of gravity), area, width, height, etc. of the extracted objects to be examined and determining whether or not they are the same object.
- misalignment correction is performed. If the misalignment is less than a predetermined amount, it is determined as a flaw, and if the misalignment is greater than a predetermined amount, it is determined as a foreign object (S4).
- the moving object and the object are determined to be scratches, and the moved object is determined to be foreign (S6).
- the reference image A is captured at that time (S14).
- the rotation belt 22 is moved to rotate the vial 10.
- S15 it is determined whether the vial 10 has made one rotation (S16). If the image has been rotated once, the image B after rotation is captured (S17).
- a predetermined time for example, 100 msec
- the image C is captured after the elapse (S19).
- the inspection can be completed while the vial 10 is moving at the inspection location 14.
- a foreign object is detected by the CCD camera.
- light is irradiated from below the vial 10 and the reflected light from the foreign object is imaged with two CCD cameras.
- foreign objects can be photographed with high resolution, and blind spots in photographing can be substantially eliminated.
- the number of CCD cameras increases, the number of blind spots in the vial 10 can be reduced, and this number may be three or more.
- the camera as an imaging means is not limited to a CCD camera, and various cameras such as a CMOS camera can be used.
- the equipment for testing is located above the vial 10. Is not arranged. Accordingly, it is easy to maintain the upper area of the vial 10 in a clean state, and foreign matters such as dust can be prevented from falling into the vial 10 having an upper opening (unplugged).
- ultrasonic waves use water for propagation of ultrasonic waves from the transmission / reception unit to the glass container, there is an energy loss, and the accuracy of inspection decreases.
- neomaizone registered trademark: containing thianficol lg in one vial
- alcohol, water, and standard glass balls with diameters of 50, 70, and 100 ⁇ were added, and a detection test was conducted.
- glass balls up to 70 ⁇ m as a result of inspection while being conveyed could be judged as defective, and detection was not hindered by scratches in the vial.
- the accuracy of the vial bottle transport and the CCD camera movement was not sufficient in the experimental machine, so it was difficult to detect glass balls with a diameter of 50 ⁇ during detection while transporting. (Detection rate 15%).
- the detection rate is 100%, and it is confirmed that glass balls with a diameter of 50 ⁇ can be sufficiently detected by improving the accuracy of the conveyance mechanism and camera movement mechanism. did it.
- FIG. 6 illustrates another example, in which the vial 10 is reciprocated. That is, after rotating the vial 10 about 180 ° in one direction, it is rotated about 180 ° in the opposite direction. In this case, if the rotation amount in one direction is the same as the rotation amount in the opposite direction, the direction of the vial 10 (position with respect to the CCD cameras 18a and 18b) is the same.
- the belt 22 is driven by the rotating belt drive mechanism 32.
- the vial 10 is rotated by moving the belt relative to the belt 26. In this case, even if the relative movement amount of the belt 22 with respect to the belt 26 is the same, the rotation angle is different when the diameter of the vial bin 10 is different. Therefore, to control one rotation of the vial 10, it is necessary to know the diameter of the vial 10.
- the relative movement amount of the belt 22 with respect to the belt 26 is the same in the reciprocation.
- the relative movement amount of the belt 22 is the rotation amount of a motor (for example, a stepping motor) in the belt driving mechanism 32 for rotation. It can be easily controlled.
- the rotational speed can be arbitrarily controlled in either one of the rotations and the reciprocal rotations. For example, it may be accelerated at a constant acceleration, decelerated at a constant acceleration, or the acceleration may be very large. In particular, by increasing the acceleration, it is possible to reliably cause the movement of the foreign matter with respect to the vial 10. In the case of a reciprocating path, it is also preferable to make the acceleration in one direction different from the acceleration in multiple directions, so that the movement of the foreign substance with respect to the vial 10 can be surely caused.
- the vial bottle 10 has been described as a container for storing the liquid agent, but an amplifier or the like may be used as the transparent container.
- the transparent container to be used may be a bottle colored brown, for example, as long as the contents can be seen through.
- FIG. 7 shows a configuration example for rotating the vial 10.
- the trajectory of vial bin 10 is arcuate and moves clockwise.
- the two stages 1 and 2 have basically the same configuration, and have a rotating belt 22 for rotating the vial 10 and two CCD cameras 18a and 18b.
- the stages 1 and 2 move following the movement of the vial 10 and take images as described above. In this way, two stages 1 and 2 were provided because stage 1 was tested for every other vial 10, and stage 2 was for every other vial 10.
- the moving speed of the vial bottle 10 can be made relatively fast, and all the inspections can be performed. It is possible to provide more stages, and it is also preferable to perform a plurality of inspections.
- the stages 1 and 2 have the preliminary rotating belt 50.
- This pre-rotation slip 50 adjusts the position of foreign matter in the vial 10 by rotating the vial 10 in advance. That is, by rotating the vial bottle 10 by the preliminary rotating belt 50, the foreign matter in the vial bin 10 is moved slightly inward from the tube wall, and the foreign matter is easily recognized in the images of the CCD cameras 18a and 18b.
- the rotational speed of the preliminary rotating belt 50 if the rotational speed of the preliminary rotating belt 50 is too high, the foreign matter moves to the center and falls into the shadow of the central portion of the vial 10. In addition, if the rotational speed is too slow, it may not move away from the vicinity of the tube wall. Therefore, the rotation by the preliminary rotating belt 50 needs to be adjusted to an appropriate value so that the foreign matter moves slightly inward. Since the movement of the foreign object changes depending on the size, shape, specific gravity, etc. of the foreign object, it is necessary to change the spin speed depending on the foreign object to be inspected.
- the rotation by the preliminary rotating belt 50 is set to about 500 to 1500 rpm, and is set to a relatively small rotational speed when the diameter of the vial 10 is large, and to a relatively large rotational speed when the diameter is small. .
- the foreign matter when the movement of the foreign matter is reliably controlled, the foreign matter can be surely moved inward by generating a turbulent flow in the vial by applying forward and reverse spins instead of rotation in the same direction. Therefore, it is also preferable to rotate both in the forward and reverse directions by the preliminary rotating belt 50.
- the rotation direction for photographing at the stages 1 and 2 (the first rotation direction when forward / reverse rotation is performed) and the rotation direction by the preliminary rotation belt 50 are opposite to each other.
- the rotation direction of the preliminary rotation belt 50 is the forward direction
- the movement of the foreign matter can be achieved by setting the rotation direction of the vial bottle 10 by the subsequent rotation belt 22 to the reverse direction (or the reverse direction and the forward direction). Can be more effective.
- the planar angle difference between the two CCD cameras 18a and 18b is set to about 60 °.
- the adjacent vial 10 obstructs the transmitted illumination, it is necessary to widen the interval (pitch) of the vials 10.
- the size of the lighting is also required to be doubled.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022133355A (ja) * | 2015-11-19 | 2022-09-13 | エンゼルグループ株式会社 | チップの計測システム |
US11798362B2 (en) | 2016-02-01 | 2023-10-24 | Angel Group Co., Ltd. | Chip measurement system |
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JPS6388433A (ja) * | 1986-10-02 | 1988-04-19 | Hitachi Plant Eng & Constr Co Ltd | 異物検出方法並びにその装置 |
JPH02150752A (ja) * | 1988-12-02 | 1990-06-11 | Fuji Electric Co Ltd | 透明容器内の粉末中異物の検査装置 |
JPH03175344A (ja) * | 1989-09-08 | 1991-07-30 | Kirin Techno Syst:Kk | 異物検出方法及び装置 |
JPH08159989A (ja) * | 1994-12-06 | 1996-06-21 | Datsuku Eng Kk | 液体密封容器の検査方法および検査装置 |
JP2002014049A (ja) * | 2000-04-13 | 2002-01-18 | Eisai Co Ltd | 凍結乾燥製剤の乾燥前における混入異物の検査方法及びその装置 |
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2004
- 2004-07-22 WO PCT/JP2004/010420 patent/WO2006008819A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6388433A (ja) * | 1986-10-02 | 1988-04-19 | Hitachi Plant Eng & Constr Co Ltd | 異物検出方法並びにその装置 |
JPH02150752A (ja) * | 1988-12-02 | 1990-06-11 | Fuji Electric Co Ltd | 透明容器内の粉末中異物の検査装置 |
JPH03175344A (ja) * | 1989-09-08 | 1991-07-30 | Kirin Techno Syst:Kk | 異物検出方法及び装置 |
JPH08159989A (ja) * | 1994-12-06 | 1996-06-21 | Datsuku Eng Kk | 液体密封容器の検査方法および検査装置 |
JP2002014049A (ja) * | 2000-04-13 | 2002-01-18 | Eisai Co Ltd | 凍結乾燥製剤の乾燥前における混入異物の検査方法及びその装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2022133355A (ja) * | 2015-11-19 | 2022-09-13 | エンゼルグループ株式会社 | チップの計測システム |
JP7288539B2 (ja) | 2015-11-19 | 2023-06-07 | エンゼルグループ株式会社 | チップの計測システム |
US11798362B2 (en) | 2016-02-01 | 2023-10-24 | Angel Group Co., Ltd. | Chip measurement system |
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