TW538232B - Automatic particle diameter measurement equipment by on-line optical analysis - Google Patents

Abstract

The present invention provides an automatic particle diameter measurement equipment by on-line optical analysis, which is applied in analyzing the particle diameter of the particle-like material in the production process. The automatic particle diameter measurement equipment by on-line optical analysis comprises: a row-arrangement device, an image capturing device, an image analysis processing device, and an electronically-controlled driving device. The electronically-controlled driving device proceeds control integrally to capture a proper amount of the particle-like material in the production line every other preset interval and send it into the row-arrangement device, the row-arrangement device vibrates and the particle-like material falls into the image-capturing device with uniform distribution, and the image-capturing device will compute the particle diameter of each material by the image analyzing software after obtaining the image of each material. The measured weight percentage is classified to provide the particle diameter distribution of the material for real-time detection in the production process, so as to achieve the purpose of quality control.

Description

538232 V. Description of the invention (1) [Field of the invention] The present invention relates to an analysis and measurement of particle size equipment, in particular to an automatic online real-time operation, and can automatically measure the particle size of online optical analysis of particle size device. [Learning Skills]

In today's general industrial factories, material quality control in the production process has become an indispensable engineering operation. For example, taking the sintering plant operation in a general iron plant as an example, in order to ensure that the sintered ore can meet the specifications required for blast furnace combustion, a sample of quality control will be applied on the production line to control the specifications of the sintered ore. . In the past, the quality control process first sampled the sintered ore on site, and then sieved the ore through screens with different apertures, and then the operators weighed and added the ore to calculate each ore. Dimensions and weight percentages of the particle size range as a basis for quality control.

However, the types of screens mentioned above are vibrating screens, drum screens and general hand screens. Even if some of them are mechanized, they still need human labor to do the weighing work. Generally, the screen machine is expensive to build and maintain. The cost is high and the working environment is not conducive to the staff, so it is not ideal in use. In addition, after these samples have been weighed, someone needs to complete the calculation and analysis of the data. Therefore, in the actual online quality control work, after the samples are removed from the production line, the measurement work steps of screening and weighing must take a period of time. Time, and the data obtained is the product specification of the previous paragraph. Even if the product does not meet the requirements and needs to be adjusted, it is often too late, because these ore materials have already fallen into the blast furnace for combustion, that is, the sampled materials have Cause production defects or

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V. Description of the invention (2) Waste. This traditional method of quality control and decantation on online operation is because the analysis time is too long, which makes the quality control, and the cost of real-time analysis is too high due to the need to invest Λ ~~ a time difference. Human resources do sampling analysis, which leads to quality control, so the industry's unintended analysis results will cause the hidden worry of human error. Then consider human streamlining. A method to improve this shortcoming was born, especially if- Automation has become a relevant factor in human aging and other factors, making quality control an instant [inventory summary], the goal pursued by production plants. Therefore, the particle size material of the present invention is automated & 1, that is, to provide a device for measuring particle size in the production process. The online optical analysis of the particle size analysis of the material is automatically measured. The present invention contains a whole array of devices, and the optical particle size measurement equipment for optical analysis is a package, and the electric control drive is equipped with: image capture device,-image The analysis and processing device J package & driving device is the start and stop action of the whole line device, Xi Dan 彡 silly h_f, and the image divided Lu Zhuangzu + production $ / clothing 4 shirt image capture device . & and can control all of them separately ΐ = there is a frame, and the vibration of the -feeding part set on the frame < · / μ, τ 田 热 逛 KE 忭 Qaba eight feeders, and the feeder is subject to The operation of the vibration motor causes the materials to be dispersed and sent out in a uniform state. The illegal image capture device is located below the feeder and has a batch of feeders: , And-the motor associated with the feeder. The materials fall into the device from the feeding part. Page 6 538232 V. Description of the invention (3) ϊ: ϋ In a light source illuminator in the housing, two-dimensional image sensing and a The shell has-a partition defining the shell-the first ball of the first office-a partition of the workshop, and a blanking channel located above the first space and connected to the gate = space, the light source The illuminator is installed in the s22 and the lens unit is located in front of the two-dimensional image sensor. The mountain is sighed in the second space. When the materials are separated from the feeder, respectively迗-^ ί When the blanking channel falls into the first space, each material will be captured by the a: ί shirt-like sensor through the lens unit. The second Γ image analysis and processing device is to receive the two-dimensional image of the image capture device. 5 3 The captured material image is processed by a computer program and processed, and the particle size and weight percentage of each material are differentiated. The grade achieves the real-time monitoring of the particle size of the material, and then effectively improves the online quality. [Detailed description of the preferred embodiment] The other features and advantages of this Maoming will be clearly understood in the following description of the better reference π; :: ^ The first and the first picture 'The automatic optical particle size measurement of the online optical analysis of the present invention, and another preferred embodiment is suitable for particle size analysis of the particle size material 2 (such as ore) in the production process. Analytical automatic particle size measuring device 1 includes a whole set of devices U,-12, an image analysis unit f device 13, and an electric control drive m one of the devices 11 has a frame 110, and is mounted on the frame 110 Ά _, 1 U, a feeder 11 2 located below the feeding part i 丨 丨, and a vibration motor 113 coupled with the feeder 112 $. The feeder 112 will

538232 V. Description of the invention (4): The vibration motor 113 vibrates, and the second vibration: through-air system, re-testing mechanical control will have a difficult to control amplitude = Ν condition is generated to obtain higher controllability . The entire device 丨 丨 罝 ^ t several are detachably provided on the feeding piece 11 1 and the feeding piece i i 2 ^ setting = " 4 /, and the wear-resistant steel plates 114 are respectively detachable. The type of dagger: Workers read the first and third pictures on the inner side of the 1 1 1 and the inner surface of the feeder 1 1 2. The image capture device 2 is set on the feed. Looking below 11 2 and having a housing 120, and a light source illuminator 1 2 1 installed in the housing 120, a two-dimensional image sensor 丨 2 2, a lens unit 123, and two Air knife feeder 124. The casing 120 has a partition 125 and a blanking channel 126, and the partition 125 defines the casing 120 as a first six-room 1 2 7 and a second space 1 2 8 and the The blanking channel 1 2 6 is disposed above the first space 1 2 7 in communication with the first space 1 2 7. The light source illuminator 1 2 1 is installed in the first space 1 2 7 and provides sufficient brightness to facilitate shooting, and the lens unit 1 2 3 is provided in the two-dimensional image-image sensing Is 1 2 2 front side 'is also set in the first space 1 2 8 and penetrates-through a through hole 1 2 9 on the partition 1 2 5 to take a photo of II in the direction of the first space 1 2 7 The two-dimensional image sensor 12 uses a progressive scanning method to process the image captured by the lens unit 1 2 3. The air knife feeders 1 2 4 are respectively installed on the light source illuminator 1 2 1 and above the two-dimensional image sensor 1 2 2 and the lens unit 1 2 3, and are located The air knife feeder 1 24 on the light source illuminator 1 2 1 will blow high-pressure air to the light source regularly to illuminate

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Device 121 to reduce the dust generated when the materials 2 fall onto the surface of the light illuminator 121, which affects the two-dimensional image sensor 122 and the wind knife above the lens unit 123. The feeder 124 guides high-pressure air into the second space 128, and because the periphery of the second space 128 is a closed space, the air can only be exhausted through the through hole 129 on the partition 125 to make the second space 128 An outward air back pressure is formed in the space 1 28 so that the dust in the first space 1 2 7 cannot enter the second space 丨 2 8 to isolate the dust and maintain the two-dimensional image sensor 122 and The cleaning effect of the lens unit 123 further improves the image clarity and accuracy of each material 2. In conjunction with the fourth figure, the image analysis and processing device 3 is an image of each material 2 captured by the image capture device 12 and uses one of the central processors of the computer 3 shown in the first figure to perform image processing using a computer program. 13〇 and video meter rose 1 31, and after calculating the particle size and weight percentage of each material 2 to distinguish the grade. The image analysis processing set 1 3 will receive image processing by the two-dimensional image sensor 1 2 2 'will perform image processing first 3', including image correction, noise filtering, and image 2 Value and other processes, and then calculate the particle size. Among them, the image correction is a step that is required only when the first sampling is performed, and is based on a size ratio correction plate 1 3 2 ′ and a light source uniformity shown in the first and second figures respectively. The plate 1 3 3 is used for image correction. The size ratio correction plate 1 3 2 has a black curtain 1 3 4 and an opening 1 3 5 formed on the black curtain 1 3 4. The lens unit 2 is used. 3 The image obtained through the opening 丨 3 5 can know the lens unit 丨 2 3 and each material 2 falling down

538232 V. Description of the invention (6) Is the focal length of the light source uniformity correction plate appropriate? And the light source uniformity correction plate 3 3 is formed through a plurality of circular holes formed on the light source uniformity correction plate 3 3, : Yes, you can know whether the brightness provided by the light source illuminator 121 is appropriate. Before sampling and measuring the particle size, the size ratio correction plate 32 and the light source uniformity correction plate 1 3 3 are respectively placed in the first space 1 2 7 through the blanking channel 1 2 7 and The lens unit 1 2 3 captures and captures images, and through the two-dimensional image sensor 丨 2 2 converts the intensity of the light of the captured image into the voltage level and sends it to the -image = analysis processing device 13 and then the product The administrator checks in the computer 3 whether the image of the shirt is clear. If the focal length is too large or too small, you can adjust the position of the lens I single 23 to obtain the correct focal length, and if the captured image is dark or too bright As a result, the analysis of the light source illuminator needs to be adjusted to an appropriate state. After the focal length and brightness are adjusted, the noise f division and image binarization steps can be performed, so only the first time The measurement requires advanced • calibration f steps, noise filtering can be performed directly after the first measurement _ * image processing for the special step of heart image 1 3 0 'without the need for image correction steps . Since there will be overlapping images caused by dropping more than one material 2 at the same time during image acquisition, the noise filtering is to delete the suspected material 2 overlapping images-images and not include them in the sampling. In addition, the image binarization is The obtained image of each material 2 is regarded as the ellipse 21 shown in the fifth figure, and the values of the short axis a and the long axis b of the modified ellipse 21 are obtained. The image calculation 1 3 1 includes the processes of particle size analysis, calculation volume, grade division, report results, and file recovery. The particle size analysis and calculation are based on the short axis a and long axis b of the ellipse 21, and approximate For the volume of each material 2 (where 'a = M inimun R adius, b = M a X imun R adius), then

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\ 538232 V. Description of the invention (7) The volume size is used to convert the image of 箄 你 〇 寺 物 若干 2 to a certain level of density for weight conversion, using Zengshan ^ — knives, and according to the analysis results, it is displayed in Xilei㈣〇 里White knife ratio, and a β computer 3 for reference by the quality manager. Daddy first, six pavilions # _, figure, the electric control drive device 14 is the rule + ^ earth the whole device 11, Xidan service & electrical connection σ saddle image capture device 1 2 , And the shadow silly eight 忐 m set to 1 3, and a furnace control unit, α ”1 mound 7 knives analysis mounted control unit to integrate the electrical interface of these jealousy 1 11, 1, 2, ® and Λ. The electronically controlled drive device 14 can be connected to the remote computer _ smoke, eyes, and ^ π J knife do not hunt for the Ming instrument 1 2 1, the-Wei Gongbo a ,】 The first source according to the industrial system, the sensory image sensor j 2 2 and the opening and closing of the wind recognition process, the other is, 1, and the mouth is 1 24 咮 飧 4 m, i Τ ding control Fu 5 Hai vibration motor 1 1 3 opening and closing and production line 4 notifications and other operating procedures. The second picture on the page 'when the quality control person through the electric control drive 14 to control the system to take samples on the production line 4 , The materials 2 will fall on the feeder 2 112 via the feeder 111, and the feeder 112 will be vibrated by the action of the vibration motor 113 'and make the materials on the feeder 11 2 2 will be scattered and sent more evenly Out 'and fall into the first space 1 2 7 of the image capturing device 12 through the blanking channel 1 2 6. Since the light source illuminator 1 2 1 is continuously turned on', the materials 2 are dropped respectively When each material 2 is captured by the lens unit 1 23 and the two-dimensional image sensor 1 22 and sent to the image analysis processing device 1 3 for image processing 1 3 0 and image calculation 1 3 1 and After calculating the particle size and weight percentage of each material 2, the classification level is displayed on the computer 3 'for the quality control person to use as a reference for the quality control of these materials 2 on the entire production line 4. As the ore materials 2 have A certain degree of hardness

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538232

V. Description of the invention (8) Under the vibration of the operation, the wear-resistant steel plates 1 1 4 may be damaged. Therefore, the wear-resistant steel plates 1 1 4 are detachable to match the production line 4 If the operation is time-consuming, the spare parts can be replaced when the operation is aired, so as to increase the operation flexibility of the entire array of devices 11. In addition, since the one-dimensional image sensor 1 2 2 is used for fast image capture, the shutter will be adjusted to a relatively high speed, so the light source illuminator 1 2 1 provides sufficient brightness to make ^: dimensional image sensor 1 2 2 There is enough light. To sum up, 1 rely on the whole array device 1 to capture the particle size of the loading material 2 from the image and do full-automatic control of the quality control operation. The most important thing is to reduce the operating personnel, and more importantly, it can really achieve The above can be used to limit the scope of the present invention and the invention description. Lu Ying is still sent in the exclusive way of the present invention, and then set 13 to calculate these electronically controlled drive devices. 1 4 Consistent and fast, improving the automation process is more burdensome. The reliability of personnel data is just an example. When the present invention is not applied for patent changes and modifications, it is the online optical analysis of the present invention. First, the materials 2 are placed in a more uniform position 1 2 and the image analysis processing device is distinguished. Level, in addition to the system, make the entire operation process demanded on-site and real-time, and the load, and reduce the reduction of human factors and improve the purpose of analysis. This is only the scope of a better practical implementation of the present invention, that is, the scope of simple equivalent benefits made by the content of the book.

Page 538232 Brief description of the diagram The first diagram is a schematic diagram of a preferred embodiment of the automatic optical particle size measuring device for online optical analysis of the present invention; the second diagram is a perspective view of the whole arrangement of the preferred embodiment; the third The figure is a partial three-dimensional schematic diagram of the image capture device of the preferred embodiment, and illustrates the component positions and operating conditions of the image capture device. The fourth figure is a flow block diagram of the image analysis and processing device of the preferred embodiment. The fifth figure is a schematic diagram of the image binarization of the image analysis processing device, illustrating the state taken by the image binarization; and the sixth figure is a control schematic diagram of the electronically controlled driving device of the preferred embodiment.

0 [component number comparison]

1 Intelligent on-line optical particle size 128 White space measurement equipment for second space analysis 129 Through holes 11 Array device 13 Image analysis and processing device 110 Frame 130 Image processing 111 Feeder 131 Image calculation 112 Dispenser 132 Dimensional scale correction plate 113 Vibration motor 133 Light source uniformity correction plate 114 Caimo steel plate 134 Looking curtain 12 Image capture device 135 Opening hole 120 Housing 136 Round hole 121 Light source brightening device 14 Electric control drive device 122 One-dimensional image sensor 2 materials

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Claims (1)

538232 6. Scope of patent application 1. An on-line optical analysis automatic particle size measurement device suitable for particle size analysis of granular materials in the production process. 'Includes: a whole array of devices, with a frame, and the frame The previous feeding piece, a feeder provided below the feeding piece, and a vibration motor connected to the feeding piece, these materials fall into the feeding piece from the illegal feeding piece, and the feeding piece is subject to The operation of the vibration motor causes the materials to be dispersed and sent out in a more uniform state; an image capture device is disposed below the feeder and has a casing 'and is installed in the casing A light source illuminator, a two-dimensional image sensor, and a lens unit, and the casing has a partition defining the casing to define a second room and a second space, and a first space in the first space. A blanking channel above and in communication with the first space, the light source illuminator is installed in the first space, and the lens unit is provided in front of the two-dimensional image sensor and is set together In the second space, when the materials When the feeder respectively sends out the material falling into the second chamber through the blanking channel, each material will be captured by the two-dimensional image sensor to capture the image; Xiongbing 70 an image analysis processing device, is Receive the image capture material image captured by the dimensional image sensor, use the computer ^ two image processing and image calculation, and calculate the particle size and ratio of each material; , Is the start-stop action of the device with the whole row of rendering devices, and the image analysis, processing device electrical ^ 2 to make these devices. Can be controlled separately 538232 'Sixth, the scope of patent application'2. The on-line optical analysis automatic measuring particle 1-diameter device as described in item 1 of the scope of patent application, wherein the whole array device has a plurality of separately detachable places: located in the entrance The vibration parts of the material and the wear-resistant steel plate on the feeder are electromagnetically controlled to obtain higher controllability. 3. The on-line optical analysis automatic particle size measurement device described in item 1 of the scope of the patent application, wherein the image capture device further has a two-window knife feeder, and is separately installed on the light source illuminator, and Above the two-dimensional image sensor and the lens unit, the air knife feeder on the light source illuminator will periodically clear the surface of the light source illuminator with high pressure air, and the two-dimensional image sensor and The air knife feeder above the lens unit will guide the high-pressure air into the second space to form an air back pressure to prevent dust from entering, thereby maintaining the cleanness of the two-dimensional image sensor and the lens unit. . '' 4. The online optical analysis automatic measurement particle as described in item 1 of the scope of patent application. Diameter equipment, in which the image analysis and processing device first performs image processing such as image correction, noise filtering, and image binarization. , And then calculate the particle size. '5. The on-line optical analysis automatic measurement particle size device as described in item 4 of the scope of patent application, wherein the particle size analysis calculation regards the image of each material as an ellipse and uses the length of the ellipse The axis and the minor axis are calculated to approximate the volume of each material. 6. The on-line optical analysis automatic measuring particle diameter device as described in item 1 of the scope of patent application, wherein the electric control 'drive device is a programmable control unit to integrate the electrical interfaces and signals of all devices. P. 16 \