JP2014211413A - Surface state determination device, surface state determination method, surface state determination system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine a surface state of a molding in a short time.SOLUTION: A surface state determination device determines a surface state of a molding manufactured from at least two kinds of substances having mutually different infrared reflection intensities on the basis of a measurement result of the infrared reflection intensity of the molding; on the basis of measurement data of two different wavelengths in a wavelength band where there is no absorption due to water, among measurement data having indicated the measurement result, calculates a relative reflection intensity ratio between the measurement data of the two different wavelengths; and by comparing the magnitude relation between the calculated relative reflection intensity ratio and a predetermined threshold for determining the surface state of the molding, determines the surface state.

Description

  The present invention relates to a surface state determination device, a surface state determination method, a surface state determination system, and a program.

  In various production lines, a molded product is produced using a plurality of substances. In manufacturing a molded product, various measurements are performed to prevent shipment of defective products.

  For example, in Patent Document 1 below, in order to measure the thickness of the film formed by the second substance formed on the surface of the first substance, the reflection before and after the film using two kinds of wavelengths of light is used. A technique is disclosed in which the intensity ratio is obtained and the correlation between the film thickness and the reflection intensity ratio is used.

  In Patent Document 2 below, in order to determine the presence or absence of foreign matter in a molded product, one wavelength belonging to the near-infrared band is used, and the second derivative between the absorbance without foreign matter and the absorbance with foreign matter. A technique for statistically analyzing the spectrum is disclosed.

  On the other hand, the surface state of the molded product is determined by measuring the sample obtained from the production line offline using the molded product produced on the production line as a sample.

Japanese Laid-Open Patent Publication No. 58-030605 JP 2011-214941 A

  When considering the determination of the surface state of the molded product, the above-mentioned Patent Document 1 and Patent Document 2 do not refer to the surface state of the molded product. The surface condition cannot be determined. In addition, in the method of sampling the manufactured molded product and performing the determination offline, the analysis takes time, so that feedback to manufacturing control is delayed, and many defective products may be manufactured.

  Thus, a method capable of determining the surface state of a molded product in a shorter time has been desired.

  Then, this invention is made | formed in view of the said problem, The place made into the objective of this invention is the surface state determination apparatus and surface state which can determine the surface state of a molding in a short time To provide a determination method, a surface state determination system, and a program.

  In order to solve the above-described problems, according to one aspect of the present invention, the surface state (surface covering state) of a molded product produced from at least two kinds of substances having different infrared reflection intensities is set as the infrared of the molded product. An apparatus for determining based on the measurement result of the reflection intensity, based on the measurement data of two different wavelengths in the wavelength band in which there is no absorption by water among the measurement data indicating the measurement result. In order to determine the relative reflection intensity ratio calculated by the intensity calculation unit and the surface state of the molded product, the intensity calculation unit calculating a relative reflection intensity ratio between measurement data of different types of wavelengths There is provided a surface state determination device including a surface state determination unit that determines the surface state by comparing the magnitude relationship with a predetermined threshold.

  The surface state determination unit preferably determines that the surface state of the molded article is good when the calculated reflection intensity ratio is equal to or greater than the predetermined threshold.

  The molded product is manufactured by kneading the at least two kinds of substances, and the surface state determination unit, when the calculated reflection intensity ratio is less than the predetermined threshold, You may determine with the kneading | mixing of two types of substances being insufficient.

  The intensity calculation unit uses measurement data of the reflection intensity of infrared light on the white calibration plate, and each of the two types of measurement data of different wavelengths is the measurement data at the corresponding wavelength of the white calibration plate. The relative reflection intensity ratio may be calculated using the calculated calibration reflection intensity.

  The molded product may be modified coke obtained by kneading powdered coke and slaked lime.

  In order to solve the above-mentioned problem, according to another aspect of the present invention, the surface state of a molded product produced from at least two kinds of substances having different infrared reflection intensities is represented by the infrared reflection intensity of the molded product. Among the measurement data indicating the measurement result, based on the measurement data of two different wavelengths in a wavelength band where there is no absorption by water. An intensity calculation step for calculating a relative reflection intensity ratio between measurement data of different wavelengths, the relative reflection intensity ratio calculated in the intensity calculation step, and a surface state of the molded product are determined. A surface state determination method including a surface state determination step of determining the surface state by comparing a magnitude relationship with a predetermined threshold is provided.

  In order to solve the above-mentioned problem, according to still another aspect of the present invention, the surface state of a molded product produced from at least two kinds of substances having different infrared reflection intensities is represented by infrared reflection of the molded product. Infrared measuring apparatus for determining based on measurement result of intensity, measuring said molded product using infrared light of a predetermined wavelength band, and generating measurement data indicating the measurement result of said molded product And a surface state determination device that determines the surface state of the molded product using the measurement data generated by the infrared measurement device, and the surface state determination device measures the measurement result. Based on the measurement data of the two different wavelengths in the wavelength band where there is no water absorption, the relative reflection intensity ratio between the measurement data of the two different wavelengths is calculated. By comparing the relative state of the relative reflection intensity calculated by the degree calculation unit and the intensity calculation unit with a predetermined threshold for determining the surface state of the molded product, And a surface state determination unit for determining the surface state.

  In order to solve the above-mentioned problem, according to still another aspect of the present invention, a computer is used to change the surface state of a molded product manufactured from at least two types of substances having different infrared reflection intensities. A program for causing a computer to function as a determination device based on the measurement result of the infrared reflection intensity of the two of the measurement data indicating the measurement result in a computer in two wavelength bands where there is no water absorption Based on measurement data of different wavelengths, an intensity calculation function for calculating a relative reflection intensity ratio between the two types of measurement data of different wavelengths, and the relative reflection intensity ratio calculated by the intensity calculation function The surface state determination function for determining the surface state is realized by comparing the magnitude relationship with a predetermined threshold for determining the surface state of the molded product. Because of the program is provided.

  As described above, according to the present invention, the relative reflection intensity ratio between two types of measurement data of two different wavelengths using the measurement data of two types of different wavelengths in a wavelength band where there is no absorption by water. By paying attention to the magnitude relationship between the calculated reflection intensity ratio and the predetermined threshold value, it becomes possible to determine the surface state (surface covering state) of the molded product in a shorter time.

It is explanatory drawing which shows typically the whole structure of the surface state determination system which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the principle of an infrared measuring device. It is explanatory drawing for demonstrating the surface state determination process which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the surface state determination process which concerns on the same embodiment. It is explanatory drawing for demonstrating the surface state determination process which concerns on the same embodiment. It is explanatory drawing for demonstrating the surface state determination process which concerns on the same embodiment. It is the block diagram which showed an example of the structure of the surface state determination apparatus which concerns on the same embodiment. It is explanatory drawing for demonstrating the intensity | strength calculation process which the arithmetic processing part of the surface state determination apparatus which concerns on the same embodiment implements. It is the flowchart shown about an example of the flow of the pre-processing of the surface state determination method which concerns on the embodiment. It is the flowchart shown about an example of the flow of the surface state determination method which concerns on the same embodiment. It is the block diagram which showed an example of the hardware constitutions of the surface state determination apparatus which concerns on embodiment of this invention.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(About overall configuration of surface condition determination system)
First, an overall configuration of a surface state determination system according to an embodiment of the present invention will be briefly described with reference to FIGS. 1 and 2.

  In the following, as an example of a molded product produced on the production line, powdered coke (hereinafter also simply referred to as “powder coke”) and slaked lime are kneaded to coat the surface of the powdered coke with slaked lime. The modified coke produced in (1) will be described for explanation. However, the molded product in the surface condition determination system according to the embodiment of the present invention is not limited to this modified coke.

  FIG. 1 is an explanatory diagram schematically showing a modified coke production line and the overall configuration of a surface state determination system according to an embodiment of the present invention provided in the production line. FIG. It is a schematic diagram for demonstrating the principle of a measuring apparatus.

  The modified coke to which attention is paid in the embodiment of the present invention is manufactured using, for example, powder coke having a particle size of about 1 to 2 mm and slaked lime having a particle size smaller than that of the powder coke (for example, about 70 μm or less). As shown in Fig. 2, a coating film made of slaked lime is formed on the surface of the powder coke particles.

Such modified coke is produced using slaked lime (Ca (OH) ₂ ) stored in the slaked lime tank 1 and powdered coke stored in the coke tank 2 as illustrated in FIG. .

  The powder coke stored in the coke tank 2 is transported to the kneader 4 by the transport conveyor 3. During this transport, the water content of the powder coke is measured by the moisture meter 5 provided above the transport conveyor 3. Is measured in advance. Moreover, on this conveyance conveyor 3, the slaked lime cut out from the slaked lime tank 1 is laminated | stacked on a powder coke.

  In the kneader 4, water is supplied until the moisture value that is an operational target is obtained for the powder coke and slaked lime, and then the kneading process is performed to coat the surface of the powder coke with a coating made of slaked lime. . Thereafter, the powder coke on which the slaked lime coating is formed is conveyed to a granulator 6 such as a pan pelletizer to produce a modified coke molding in which the slaked lime adheres more firmly to the powder coke surface.

  The molded product of the modified coke is stored in the product tank 8 after the infrared reflection intensity in a predetermined infrared wavelength band is measured by the infrared measuring device 9 while being transported to the product tank 8 by the transport conveyor 7. Is done.

  Here, the amount of water supplied in the kneader 4, the measurement result of the moisture content of the powder coke by the moisture meter 5, and the measurement data of the infrared reflection intensity by the infrared measuring device 9 are one or a plurality of operation data holding servers. Output to 20 and stored.

  The surface condition determination apparatus 10 according to the embodiment of the present invention uses the measurement data of the infrared reflection intensity held in the operation data holding server 20, the data showing the measurement result by the moisture meter 5, etc. Determine the coke surface condition. The surface state determination device 10 will be described in detail later.

  In FIG. 1, the surface state determination device 10 is illustrated so as to acquire various types of information from the operation data holding server 20, but the surface state determination device 10 does not go through the operation data holding server 20. Various data may be obtained directly from the moisture meter 5 or the infrared measuring device 9.

  FIG. 2 schematically shows a configuration of a general infrared measuring apparatus (more specifically, an infrared moisture meter) used for measuring the moisture content of the measurement object.

  As shown schematically in FIG. 2, the infrared measuring apparatus for measuring the amount of moisture includes an infrared light source that emits light in the infrared band (infrared light), and infrared light emitted from the infrared light source. Mainly to an object to be measured, a wavelength selection filter, an optical system that guides the reflected infrared light to the detector, and a detector that detects the reflected infrared light.

  The infrared light emitted from the infrared light source is applied to the measurement area of the measurement object after the wavelength of the infrared light applied to the measurement object is selected by the wavelength selection filter. The reflected infrared light reflected from the measurement object is collected by the mirror and guided to the detector.

Here, in the infrared measuring apparatus, the intensity of reflected infrared light at a wavelength (λ _w ) that is absorbed by water, and the wavelength (λ _b1 , λ _b2 ) that is located near the wavelength λ _w and that is not absorbed by water. And the intensity of the reflected infrared light at, and the detection result by the detector is output as measurement data. Such a wavelength can be appropriately determined based on the absorption wavelength of water. For example, 1780 nm, 1940 nm, and 2100 nm can be selected as the wavelengths λ _b1 , λ _w , and λ _b2 , respectively. is there.

  In the embodiment of the present invention, a general infrared spectrometer or the like can be used in addition to the infrared moisture meter as shown in FIG.

  The surface condition determination apparatus 10 according to the embodiment of the present invention described in detail below performs the processing based on the measurement data output from such an infrared measurement apparatus, so that the reformation conveyed on the production line. The surface condition of coke can be measured online in a short time.

  Hereinafter, a method for determining the surface state of the modified coke will be described by paying attention to measurement data at two different wavelengths that are not absorbed by water.

<Infrared reflection intensity at a wavelength without absorption by water>
In the following, first, prior to describing the surface state determination process according to the embodiment of the present invention, the phenomenon found by the present inventor and focused on in the surface state determination process according to the present embodiment will be described with reference to FIGS. Will be described with reference to FIG. 3-6 is explanatory drawing for demonstrating the surface state determination process which concerns on this embodiment.

The present inventor found a phenomenon as shown in FIG. 3 while examining the measurement results of the infrared reflection intensities of slaked lime and powdered coke, which are two materials used as the raw materials for the modified coke.
That is, based on the infrared reflection intensity at one wavelength (for example, wavelength λ _b1 ) without absorption by water, the infrared reflection intensity (for example, wavelength λ _b2 ) at the other wavelength without absorption by water When the infrared reflection intensity at a wavelength with absorption by water (wavelength λ _w ) is relatively expressed, a graph as shown in FIG. 3 can be obtained for each of slaked lime and powdered coke. Here, the vertical axis in FIG. 3 is the relative infrared reflection intensity (hereinafter also referred to as relative infrared reflection intensity), and the horizontal axis is the absorption wavelength of interest in the infrared measurement apparatus. .

  Focusing on the relative infrared reflection intensity at two wavelengths without absorption by water, the relative infrared reflection intensity at one wavelength is 1.0 regardless of the substance because it is used as a reference. However, the relative infrared reflection intensity at the other wavelength varies depending on the substance. The present inventor has examined the reason why the difference in relative infrared reflection intensity occurs at a wavelength where there is no absorption by water. As a result, the intensity difference as shown in FIG. I thought that it was reflected.

Therefore, when changing the mixing ratio of slaked lime when kneading slaked lime and coke breeze and the water content of this slaked lime, the infrared reflection intensity of the sufficiently kneaded modified coke was measured. The results as shown in 4 were obtained. Here, in the measurement, the ratio of the blended mass of slaked lime to the total mass of the modified coke was changed to three types of 4%, 7%, and 10%. In addition, the vertical axis in FIG. 4 indicates the relative infrared reflection intensity at the wavelength λ _b2 with the wavelength λ _b1 as a reference, and the horizontal axis indicates the moisture value of the modified coke measured by the dry weight method ( %).

  As is apparent from FIG. 4, when attention is paid to each moisture value, it can be seen that the relative infrared reflection intensity decreases as the blending ratio of slaked lime increases. It can also be seen that within the same blending ratio, the relative infrared reflection intensity decreases as the moisture value that functions as a binder increases. Therefore, it was confirmed that the difference in relative infrared reflection intensity as shown in FIG. 3 reflects the difference in hue of the material of interest.

  Here, the larger the blending ratio of slaked lime, the more uniformly the surface of the powdered coke is covered with a coating made of slaked lime. Therefore, considering the obtained knowledge, it can be considered that the results shown in FIGS. 3 and 4 reflect the coating state of the powder coke surface with slaked lime.

Next, the present inventor changed the moisture content of the slaked lime after changing the mixing ratio of the slaked lime to a constant value (10%) when kneading slaked lime and powdered coke as in FIG. The infrared reflection intensity of the modified coke produced by sufficiently kneading was measured. In addition, relative infrared reflection intensity predicted from the reflection intensity and blending ratio of slaked lime and modified coke was calculated in accordance with the measurement. The obtained results are shown in FIG. In FIG. 5, the vertical axis indicates the relative infrared reflection intensity at the wavelength λ _b2 with the wavelength λ _b1 as a reference, and the horizontal axis indicates the moisture value (%) of the modified coke measured by the dry weight method. ).

  As is clear from FIG. 5, the relative infrared reflection intensity of the modified coke produced by sufficiently kneading is the predicted value of the relative infrared reflection intensity (in other words, the relative infrared reflection in a state where the mixture is simply mixed). It can be seen that the reflection intensity is increased. This result shows that the value of the relative infrared reflection intensity of the modified coke changes depending on the kneaded state of slaked lime and powdered coke, that is, the state of coating of the surface of the powdered coke with slaked lime.

As a result of studying the above-described knowledge together, the present inventor has come up with the knowledge shown in FIG.
That is, in a state where kneading is not sufficient, white slaked lime and black powder coke are only present apart, so to speak, slaked lime is thickly present near the surface of the powder coke, whereas kneading By sufficiently carrying out the above, the coverage of slaked lime on the surface of the powder coke increases. In a state where the kneading is insufficient, slaked lime is only unevenly adhered to the surface of the powder coke, and depending on the location, there is a lump of slaked lime as schematically shown in FIG. It is also possible. When an enlarged photograph of the surface of the modified coke in such a state is taken, the surface of the modified coke has mottled white portions and black portions. When sufficiently kneaded, the slaked lime is thinly and uniformly deposited over the entire surface of the powder coke. When taking an enlarged photograph of the surface of the modified coke in this state, the surface of the modified coke is observed as a gray image by the black powder coke being seen through the white slaked lime. The

  As the surface state of the modified coke changes, the relative infrared reflection intensity at a wavelength without absorption by water increases as described above. Also in the results shown in FIG. 4, the relative infrared reflection intensity increases as the slaked lime mixing ratio decreases at the same moisture value, and is consistent with the above findings. As a result of further study on such knowledge, the present inventor has focused on the relative infrared reflection intensity at a wavelength at which there is no absorption by water, and the obtained relative infrared reflection intensity is determined as a threshold value. It came to mind that the surface state of quality coke can be determined.

<About the configuration of the surface condition determination device>
Based on the knowledge described above, the configuration of the surface state determination device 10 according to the present embodiment, which has been conceived by the present inventor, will be described in detail with reference to FIGS. 7 and 8. FIG. 7 is a block diagram illustrating an example of the configuration of the surface state determination apparatus 10 according to the present embodiment. FIG. 8 illustrates intensity calculation processing performed by the arithmetic processing unit of the surface state determination apparatus 10 according to the present embodiment. It is explanatory drawing for demonstrating.

  The surface state determination device 10 determines the surface state (surface covering state) of a molded product (for example, modified coke manufactured from slaked lime and powdered coke) manufactured from at least two types of substances having different infrared reflection intensities. It is an apparatus which determines based on the measurement result of the infrared reflected intensity of a molding. As illustrated in FIG. 7, the surface state determination device 10 mainly includes a data acquisition unit 101, an arithmetic processing unit 103, a result output unit 105, a display control unit 107, and a storage unit 109.

  The data acquisition unit 101 is realized by, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a communication device, and the like. The data acquisition unit 101 is a data (measurement data) indicating a measurement result from a server or a database that stores measurement data obtained by measuring a determination target (for example, reformed coke) by infrared rays, such as an operation data holding server. Data). The data acquisition unit 101 can also directly acquire data indicating the measurement result from the infrared measurement device 9. When the data acquisition unit 101 acquires the measurement data used for the surface state determination process, the data acquisition unit 101 outputs the acquired measurement data to the arithmetic processing unit 103 described later.

  In addition, the data acquisition unit 101 performs various operations such as the moisture content of slaked lime supplied to the kneading machine 4 and the supply amount of water added by the kneading machine 4 when producing modified coke, for example. It is also possible to acquire data and output it to the arithmetic processing unit 103.

  The arithmetic processing unit 103 is realized by, for example, a CPU, a ROM, a RAM, and the like. The arithmetic processing unit 103 performs processing for determining the surface state of the determination target using the measurement data of the determination target output from the data acquisition unit 101. When performing the surface state determination process, the arithmetic processing unit 103 can refer to a database or the like that is stored in a storage unit 109 described later and stores various parameters such as a surface state determination threshold value. is there. The details of the surface state determination process performed by the arithmetic processing unit 103 will be described in detail later.

  When the arithmetic processing unit 103 determines the surface state of the determination target based on the measurement data obtained by the infrared measurement device 9, the calculation processing unit 103 outputs the obtained determination result to the result output unit 105 described later.

  The result output unit 105 is realized by, for example, a CPU, a ROM, a RAM, an output device, a communication device, and the like. The result output unit 105 outputs data corresponding to the determination result output from the arithmetic processing unit 103 to the user of the surface state determination apparatus 10. Specifically, the result output unit 105 outputs data corresponding to the analysis result to various servers and control devices, or outputs the data as a paper medium using an output device such as a printer. The result output unit 105 may output data corresponding to the determination result to various information processing apparatuses such as a computer provided outside or to various recording media.

  In addition, when the result output unit 105 outputs data corresponding to the determination result to an output device such as a display provided in the surface state determination device 10 or a display of various devices provided outside, The determination result is output in cooperation with a display control unit 107 described later.

  The display control unit 107 is realized by, for example, a CPU, ROM, RAM, output device, communication device, and the like. The display control unit 107 performs display control when displaying data corresponding to the determination result on various display devices such as a display. Thereby, the user of the surface state determination apparatus 10 can grasp the determination result regarding the surface state of the determination target object on the spot.

  Further, the display control unit 107 can perform display control such as quickly displaying the determination result of the determination object output from the result output unit 105. Thereby, the determination result of the surface state of the determination target object (for example, modified coke) to be manufactured is quickly displayed on the display screen, and the user of the surface state determination device 10 generates a molded product having an unfavorable surface state. It is possible to quickly recognize whether or not the error has occurred and determine whether to process the abnormality that has occurred. Further, the display control unit 107 may display an alarm for notifying that the surface condition has deteriorated or information necessary for the treatment on the display screen, or generate an audio signal or the like as an alarm.

  By outputting the determination result to the user in this way, the user can perform a coping operation such as increasing the amount of added water added during kneading or the like when the surface condition is deteriorated, or the like. Can be performed quickly, and the yield of products can be improved.

  The storage unit 109 is realized by, for example, a RAM, a storage device, or the like. In the storage unit 109, the surface state determination apparatus 10 according to the present embodiment stores various parameters, processes in progress, or various databases and programs that need to be saved when performing some processing. Recorded as appropriate. One or more of these parameters, databases, etc. may be stored depending on the operating conditions of the molded product. The storage unit 109 may also record various objects such as icons used when the display control unit 107 configures a display screen for displaying the analysis result. In the storage unit 109, the data acquisition unit 101, the arithmetic processing unit 103, the result output unit 105, the display control unit 107, and the like included in the surface state determination apparatus 10 can freely perform data read / write processing. .

[Configuration of the arithmetic processing unit]
Next, the configuration of the arithmetic processing unit 103 included in the surface state determination device 10 will be described in detail.
As described above, the arithmetic processing unit 103 performs the process of determining the surface state of the determination target using measurement data of the determination target. As shown in FIG. 7, the arithmetic processing unit 103 includes an intensity calculation unit 111 and a surface state determination unit 113.

  The intensity calculation unit 111 is realized by a CPU, a ROM, a RAM, and the like, for example. Based on the measurement data of two different wavelengths in the wavelength band where there is no absorption by water among the measurement data indicating the measurement result output from the data acquisition unit 101, the intensity calculation unit 111 The relative reflection intensity ratio between the measurement data of different wavelengths is calculated.

In the following, description will be made with reference to FIG. 8 taking wavelength λ _b1 = 1780 nm and wavelength λ _b2 = 2100 nm shown in FIG. Note that if the difference between the two wavelengths is small, the difference in relative infrared reflection intensity also becomes small. Therefore, in order to avoid this, it is preferable to select wavelengths having a difference of 200 nm or more.

First, prior to the actual surface condition determination processing of the modified coke, measurement with infrared light using a white calibration plate is performed, and the reflection intensities A _λb1 and A _{λb2 of the} white calibration plate shown in FIG. Is obtained. The reflection intensity of such a white calibration plate is stored in the storage unit 109 as a parameter or database, for example. The intensity calculation unit 111 identifies measurement data corresponding to the wavelengths λ _b1 and λ _b2 (that is, reflection intensities B _λb1 and B _λb2 ) among the measurement data output from the data acquisition unit 101.

Next, the intensity calculation unit 111 calibrates the reflection intensity by dividing the reflection intensity B (λ) of the modified coke by the reflection intensity A (λ) of the white calibration plate at each of the wavelengths λ _b1 and λ _b2. I do. The reflection intensity after calibration thus obtained will be referred to as calibration reflection intensity hereinafter. In the example shown in FIG. 8, a calibrated reflection intensity of the wavelength _{λ b1 C λb1 = (B λb1} / A λb1), a calibration reflection intensity of the wavelength _{λ b2 C λb2 = (B λb2} / A λb2).

Subsequently, the intensity calculation unit 111 calculates a relative reflection intensity ratio based on the calibration reflection intensity at one of the wavelengths λ _b1 and λ _b2 . The relative reflection intensity ratio thus obtained is hereinafter referred to as relative reflection intensity or relative infrared reflection intensity. Example shown in FIG. 8 corresponds to the case of calculating the relative reflection intensity D relative to the calibration reflection intensity at the wavelength lambda _b1, relative reflection intensity D of the wavelength _{λ b1 λb1 = (C λb1 /} C λb1 ) = 1, the relative reflection intensity D of the wavelength _{λ b2 λb2 = (C λb2 /} C λb1).

In the example shown in FIG. 8, the calibration reflection intensity at the wavelength λ _b1 is used as a reference, but it goes without saying that the calibration reflection intensity at the wavelength λ _b2 may be used as a reference.

  The intensity calculation unit 111 outputs each of the relative reflection intensities D thus calculated to the surface state determination unit 113.

  The surface state determination unit 113 is realized by a CPU, a ROM, a RAM, and the like, for example. The surface state determination unit 113 compares the relative reflection intensity calculated by the intensity calculation unit 111 with a predetermined threshold for determining the surface state of the molded product, thereby comparing the molded product (for example, the modified product). Coke surface condition is determined.

  First, prior to the actual modified coke surface state determination process, the correlation between the surface state of the modified coke and the relative reflection intensity is analyzed based on past operation data, etc. , Also referred to as a surface state determination threshold value). For example, one or a plurality of such surface state determination threshold values are stored in the storage unit 109 as parameters or databases in accordance with actual operating conditions.

  As described earlier, the relative reflection intensity of the modified coke having a sufficiently good kneading and good surface condition shows a relatively high value. Therefore, the surface state determination unit 113 compares the calculated relative reflection intensity (relative reflection intensity other than the reference wavelength) with the surface state determination threshold, and the relative reflection intensity is the surface state determination threshold. When it is above, it is determined that the surface state of the modified coke is good (the state in which slaked lime is uniformly attached to the surface of the powder coke as shown in FIG. 6).

  Further, when the calculated relative reflection intensity is less than the surface state determination threshold, the surface state determination unit 113 has insufficient kneading processing, and the surface state is poor (as shown in FIG. It is determined that the slaked lime is unevenly attached to the surface.

  In the above description, reference has been made to the case of determining the quality of the surface condition (in other words, whether the kneading process is sufficient) based on one surface condition determination threshold. A plurality of levels may be set in stages, and for example, the surface state may be evaluated in multiple stages such as ◯, Δ, and X.

  The surface state determination unit 113 outputs information indicating the determination result thus obtained to the result output unit 105.

  As described above, the arithmetic processing unit 103 according to the present embodiment calculates the relative reflection intensity based on the measurement data of the molded product in the wavelength band where there is no water absorption, and calculates the calculated relative reflection intensity and the surface state determination. The surface state of the molded product is determined by comparing with the magnitude relationship with the threshold value for use. Since such a process can be performed in a very short time, it is possible to perform a surface state determination process that has been performed offline in the past online. Moreover, since the calculated value of the relative reflection intensity has a correlation with the thickness of the slaked lime coated on the surface of the powder coke, the thickness of the coated slaked lime is determined according to the calculated value of the relative reflection intensity. Is also possible.

  Heretofore, an example of the function of the surface state determination device 10 according to the present embodiment has been shown. Each component described above may be configured using a general-purpose member or circuit, or may be configured by hardware specialized for the function of each component. In addition, the CPU or the like may perform all functions of each component. Therefore, it is possible to appropriately change the configuration to be used according to the technical level at the time of carrying out the present embodiment.

  Note that a computer program for realizing each function of the surface state determination apparatus according to the present embodiment as described above can be produced and installed in a personal computer or the like. In addition, a computer-readable recording medium storing such a computer program can be provided. The recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory, or the like. Further, the above computer program may be distributed via a network, for example, without using a recording medium.

<About surface condition judgment method>
Below, an example of the flow of the surface state determination method according to the present embodiment will be briefly described with reference to FIGS. 9 and 10. FIG. 9 is a flowchart illustrating an example of a pre-processing flow of the surface state determination method according to the present embodiment, and FIG. 10 is a flowchart illustrating an example of a flow of the surface state determination method according to the present embodiment. .

[Pre-processing flow]
First, referring to FIG. 9, the flow of pre-processing of the surface state determination method according to the present embodiment will be briefly described.
First, the reflection intensity of the two wavelengths λ _b1 and λ _{b2 that} are not absorbed by water is measured by the infrared measuring device 5 using the white calibration plate (step S101), and the obtained measurement result (reflection intensity) is stored in the storage unit. 109 or the like. Thereafter, using the modified coke whose surface state is known, the reflection intensity of the wavelengths λ _b1 and λ _b2 is measured by the infrared measuring device 5 (step S103).

Next, the intensity calculation unit 111 of the arithmetic processing unit 103 calculates the calibration reflection intensity from the obtained measurement result of the modified coke (step S105), and then the relative reflection intensity between the wavelengths λ _b1 and λ _b2. Is calculated (step S107).

  Here, it is determined whether the number of samples relating to the obtained measurement result of the modified coke is sufficient (step S109). When it is determined that the number of samples is sufficient for statistical processing for determining the threshold value for determining the surface state, step S111 described later is performed. If it is determined that the number of samples is insufficient, the process returns to step S103, and the measurement is continued using the modified coke whose surface state is known. Note that the specific value of the number of samples is not particularly limited, and may be appropriately determined so that a statistically significant result can be obtained.

  If it is determined that the number of samples is sufficient, a surface state determination threshold value is determined from the calculated relative reflection intensity and a known surface state (step S111). The determined threshold value for surface state determination is stored in the storage unit 109 or the like.

  By performing such pre-processing, preparation for the surface state determination processing is completed. In addition, this pre-processing should just be implemented at least once prior to the surface state determination process of a molded article, and does not need to be implemented every time a molded article is measured. Further, this pre-processing may be performed at an arbitrary timing according to a user operation or the like.

[Flow of surface condition judgment processing]
Next, the flow of the surface state determination method according to the present embodiment will be briefly described with reference to FIG.
First, the infrared measuring device 9 measures the modified coke transported on the transport conveyor and measures the reflection intensities of the wavelengths λ _b1 and λ _{b2 that} are not absorbed by water (step S121).

The data acquisition unit 101 of the surface state determination device 10 acquires the measurement data measured by the infrared measurement device 9 and outputs it to the intensity calculation unit 111 of the arithmetic processing unit 103 and also to the storage unit 109. Further, the data acquisition unit 101 acquires the measurement data of the white calibration plate stored in the storage unit 109 and outputs it to the intensity calculation unit 111. The intensity calculation unit 111 calculates the calibration reflection intensity of the modified coke using the measurement data output from the data acquisition unit 101 and the measurement data of the white calibration plate (step S123), and then the wavelength The relative reflection intensity between λ _b1 and λ _b2 is calculated (step S125). Thereafter, the intensity calculation unit 111 outputs the obtained relative reflection intensity to the surface state determination unit 113.

  The surface state determination unit 113 determines the relative reflection intensity calculated by the intensity calculation unit 111 using the surface state determination threshold value stored in the storage unit 109 or the like, and determines the surface state of the modified coke. (Step S127). When the surface state determination ends, the surface state determination unit 113 generates information indicating the obtained determination result and outputs the information to the result output unit 105 (step S129).

  When the result output unit 105 acquires information indicating the determination result, the result output unit 105 outputs the acquired information to the display control unit 107 and the storage unit 109. The display control unit 107 displays information indicating the determination result on the display screen. Thereby, the user can grasp the surface state of the modified coke being manufactured in a short time.

  The surface state determination device and the surface state determination method according to the first embodiment of the present invention have been described in detail above with reference to FIGS.

(About hardware configuration)
Next, the hardware configuration of the surface state determination apparatus 10 according to the embodiment of the present invention will be described in detail with reference to FIG. FIG. 11 is a block diagram for explaining a hardware configuration of the surface state determination apparatus 10 according to the embodiment of the present invention.

  The surface state determination apparatus 10 mainly includes a CPU 901, a ROM 903, and a RAM 905. The surface state determination device 10 further includes a bus 907, an input device 909, an output device 911, a storage device 913, a drive 915, a connection port 917, and a communication device 919.

  The CPU 901 functions as an arithmetic processing unit and a control unit, and controls all or part of the operation in the surface state determination device 10 according to various programs recorded in the ROM 903, the RAM 905, the storage device 913, or the removable recording medium 921. . The ROM 903 stores programs used by the CPU 901, calculation parameters, and the like. The RAM 905 primarily stores programs used by the CPU 901, parameters that change as appropriate during execution of the programs, and the like. These are connected to each other by a bus 907 constituted by an internal bus such as a CPU bus.

  The bus 907 is connected to an external bus such as a PCI (Peripheral Component Interconnect / Interface) bus via a bridge.

  The input device 909 is an operation unit operated by the user, such as a mouse, a keyboard, a touch panel, a button, a switch, and a lever. Further, the input device 909 may be, for example, remote control means (so-called remote control) using infrared rays or other radio waves, or may be an external connection device 923 such as a PDA corresponding to the operation of the surface state determination device 10. There may be. Furthermore, the input device 909 includes, for example, an input control circuit that generates an input signal based on information input by a user using the operation unit and outputs the input signal to the CPU 901. The user of the surface state determination device 10 can input various data and instruct a processing operation to the surface state determination device 10 by operating the input device 909.

  The output device 911 is configured by a device that can notify the user of the acquired information visually or audibly. Examples of such devices include CRT display devices, liquid crystal display devices, plasma display devices, EL display devices and display devices such as lamps, audio output devices such as speakers and headphones, printer devices, mobile phones, and facsimiles. The output device 911 outputs results obtained by various processes performed by the surface state determination device 10, for example. Specifically, the display device displays results obtained by various processes performed by the surface state determination device 10 as text or images. On the other hand, the audio output device converts an audio signal composed of reproduced audio data, acoustic data, and the like into an analog signal and outputs the analog signal.

  The storage device 913 is a data storage device configured as an example of a storage unit of the surface state determination device 10. The storage device 913 includes, for example, a magnetic storage device such as an HDD (Hard Disk Drive), a semiconductor storage device, an optical storage device, or a magneto-optical storage device. The storage device 913 stores programs executed by the CPU 901, various data, various data acquired from the outside, and the like.

  The drive 915 is a recording medium reader / writer, and is built in or externally attached to the surface state determination apparatus 10. The drive 915 reads information recorded on a removable recording medium 921 such as a mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and outputs the information to the RAM 905. The drive 915 can also write a record on a removable recording medium 921 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory. The removable recording medium 921 is, for example, a CD medium, a DVD medium, a Blu-ray medium, or the like. The removable recording medium 921 may be a CompactFlash (registered trademark) (CompactFlash: CF), a flash memory, an SD memory card (Secure Digital memory card), or the like. Further, the removable recording medium 921 may be, for example, an IC card (Integrated Circuit card) on which a non-contact IC chip is mounted, an electronic device, or the like.

  The connection port 917 is a port for directly connecting a device to the surface state determination apparatus 10. Examples of the connection port 917 include a USB (Universal Serial Bus) port, an IEEE 1394 port, a SCSI (Small Computer System Interface) port, and an RS-232C port. By connecting the external connection device 923 to the connection port 917, the surface state determination device 10 acquires various data directly from the external connection device 923 or provides various data to the external connection device 923.

  The communication device 919 is a communication interface configured with, for example, a communication device for connecting to the communication network 925. The communication device 919 is, for example, a communication card for wired or wireless LAN (Local Area Network), Bluetooth (registered trademark), or WUSB (Wireless USB). The communication device 919 may be a router for optical communication, a router for ADSL (Asymmetric Digital Subscriber Line), or a modem for various communication. The communication device 919 can transmit and receive signals and the like according to a predetermined protocol such as TCP / IP, for example, with the Internet and other communication devices. The communication network 925 connected to the communication device 919 is configured by a wired or wireless network, and may be, for example, the Internet, a home LAN, infrared communication, radio wave communication, satellite communication, or the like. .

  Heretofore, an example of the hardware configuration capable of realizing the function of the surface state determination apparatus 10 according to the embodiment of the present invention has been shown. Each component described above may be configured using a general-purpose member, or may be configured by hardware specialized for the function of each component. Therefore, it is possible to change the hardware configuration to be used as appropriate according to the technical level at the time of carrying out this embodiment.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Surface state determination apparatus 101 Data acquisition part 103 Operation processing part 105 Result output part 107 Display control part 109 Storage part 111 Strength calculation part 113 Surface state determination part

Claims (8)

An apparatus for determining the surface state of a molded product produced from at least two kinds of substances having different infrared reflection intensities based on the measurement result of the infrared reflection intensity of the molded product,
Based on the measurement data of two different wavelengths in the wavelength band where there is no water absorption among the measurement data indicating the measurement result, the relative reflection intensity ratio between the measurement data of the two different wavelengths. An intensity calculation unit for calculating
Surface state determination for determining the surface state by comparing the relative relationship between the relative reflection intensity ratio calculated by the intensity calculation unit and a predetermined threshold value for determining the surface state of the molded product. And
A surface state determination device comprising: The surface condition determination unit determines that the surface condition of the molded article is good when the calculated reflection intensity ratio is equal to or greater than the predetermined threshold value. Surface condition determination device. The molded product is manufactured by kneading the at least two kinds of substances,
The surface state determination unit determines that the kneading of the at least two kinds of substances is insufficient when the calculated reflection intensity ratio is less than the predetermined threshold value. Or the surface state determination apparatus of 2. The intensity calculation unit uses measurement data of the reflection intensity of infrared light on the white calibration plate, and each of the two types of measurement data of different wavelengths is the measurement data at the corresponding wavelength of the white calibration plate. The surface state according to any one of claims 1 to 3, wherein a calibration reflection intensity is calculated by dividing the calculated reflection reflection intensity and the relative reflection intensity ratio is calculated using the calculated calibration reflection intensity. Judgment device. The surface state determination apparatus according to any one of claims 1 to 4, wherein the molded product is modified coke obtained by kneading powdered coke and slaked lime. A method for determining the surface state of a molded product produced from at least two kinds of substances having different infrared reflection intensities based on the measurement result of the infrared reflection intensity of the molded product,
Based on the measurement data of two different wavelengths in the wavelength band where there is no water absorption among the measurement data indicating the measurement result, the relative reflection intensity ratio between the measurement data of the two different wavelengths. An intensity calculating step for calculating
Surface state for determining the surface state by comparing the relative reflection intensity ratio calculated in the intensity calculating step with a predetermined threshold for determining the surface state of the molded product A determination step;
The surface state determination method characterized by including. A system for determining a surface state of a molded product produced from at least two kinds of substances having different infrared reflection intensities based on a measurement result of infrared reflection intensity of the molded product,
An infrared measuring device that measures the molded product using infrared light in a predetermined wavelength band and generates measurement data indicating a measurement result of infrared reflection intensity of the molded product;
Using the measurement data generated by the infrared measurement device, a surface state determination device for determining the surface state of the molded product,
With
The surface state determination device is
Based on the measurement data of two different wavelengths in the wavelength band where there is no water absorption among the measurement data indicating the measurement result, the relative reflection intensity ratio between the measurement data of the two different wavelengths. An intensity calculation unit for calculating
Surface state determination for determining the surface state by comparing the relative relationship between the relative reflection intensity ratio calculated by the intensity calculation unit and a predetermined threshold value for determining the surface state of the molded product. And
A surface state determination system characterized by comprising: A program for causing a computer to function as a device for determining the surface state of a molded product manufactured from at least two kinds of substances having different infrared reflection intensities based on the measurement result of the infrared reflection intensity of the molded product. And
On the computer,
Based on the measurement data of two different wavelengths in the wavelength band where there is no water absorption among the measurement data indicating the measurement result, the relative reflection intensity ratio between the measurement data of the two different wavelengths. An intensity calculation function for calculating
Surface state determination for determining the surface state by comparing the relative relationship between the relative reflection intensity ratio calculated by the intensity calculation function and a predetermined threshold value for determining the surface state of the molded product Function and
A program to realize

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