JP2014211414A - 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 in a wavelength band where there is absorption due to water and 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; on the basis of the calculated relative reflection intensity ratio, calculates absorbance in the wavelength band where there is absorption due to water; and according to a degree of deviation between absorbance estimated from an estimation moisture amount of the molding and the calculated absorbance, 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. A device for determining based on the measurement result of the reflection intensity, and among the measurement data indicating the measurement result, the measurement data in the wavelength band where water absorption exists and the wavelength band where there is no water absorption Based on the measurement data, an intensity calculation unit that calculates a relative reflection intensity ratio between the measurement data in the wavelength band where the water absorption exists and the measurement data in the wavelength band where the water absorption does not exist And an absorbance calculation unit that calculates absorbance in a wavelength band in which absorption by water exists based on the relative reflection intensity ratio calculated by the intensity calculation unit, and There is provided a surface state determination device comprising: a surface state determination unit that determines the surface state according to a degree of deviation between an absorbance estimated from a constant moisture amount and the absorbance calculated by the absorbance calculation unit. The

  The surface state determination unit is used when calculating the moisture content of the molded product in a coordinate plane defined by the absorbance in the wavelength band where the water absorption exists and the moisture content of the molded product. It is preferable that an index representing the degree of separation of the calculated absorbance from the calibration curve is calculated using a calibration curve, and the calculated index is set as the degree of deviation.

  It is preferable that the surface state determination unit determines that the surface state of the molded article is good when the calculated index is equal to or less than a predetermined threshold value.

  The molded product is manufactured by kneading the at least two types of substances, and the surface state determination unit is configured to output the at least two types of substances when the calculated index exceeds a predetermined threshold. It may be determined that the kneading is insufficient.

  The surface state determination unit may use a difference between the estimated absorbance calculated using the estimated moisture content and the calibration curve and the absorbance calculated by the absorbance calculation unit as the index.

  The surface state determination unit may use, as the index, a separation distance between a point defined by the absorbance calculated by the absorbance calculation unit and the estimated moisture amount and the calibration curve on the coordinate plane.

  You may further provide the moisture content calculation part which calculates the moisture content of the said molding based on the said absorbance calculated by the said absorbance calculation part, and a calibration curve.

  The intensity calculation unit uses the measurement data of the reflection intensity of infrared light on the white calibration plate, and divides each of the measurement data by the measurement data at the corresponding wavelength of the white calibration plate. The relative reflection intensity ratio may be calculated by calculating the intensity and 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 (surface covering state) of a molded product produced from at least two kinds of substances having different infrared reflection intensities is used as the molding. It is a method of determining based on the measurement result of the infrared reflection intensity of an object, and among the measurement data indicating the measurement result, measurement data in a wavelength band in which absorption by water exists and a wavelength at which absorption by water does not exist Based on the measurement data in the band, the relative reflection intensity ratio between the measurement data in the wavelength band where the water absorption exists and the measurement data in the wavelength band where the water absorption does not exist is calculated. Based on the intensity calculation step and the relative reflection intensity ratio calculated in the intensity calculation step, an absorbance calculation step for calculating the absorbance in the wavelength band where the water absorption exists. A surface state determination step for determining the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded product and the absorbance calculated in the absorbance calculation step; Is provided.

  In order to solve the above-mentioned problem, according to still another 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, A system for determining based on the measurement result of infrared reflection intensity of a molded product, measuring the molded product using the infrared light in a predetermined wavelength band, and measuring data indicating the measurement result of the molded product A surface state determination device that determines a surface state of the molded product using the measurement data generated by the infrared measurement device, and the surface state determination device includes: Based on the measurement data in the wavelength band where the absorption by water exists and the measurement data in the wavelength band where the absorption by water does not exist, An intensity calculation unit that calculates a relative reflection intensity ratio between measurement data in an existing wavelength band and measurement data in a wavelength band in which no water absorption exists, and the relative value calculated by the intensity calculation unit Calculated by the absorbance calculation unit for calculating the absorbance in the wavelength band where the absorption by water exists, the absorbance estimated from the estimated water content of the molded product, and the absorbance calculation unit In addition, a surface state determination system including a surface state determination unit that determines the surface state according to the degree of deviation from the absorbance is provided.

In order to solve the above-mentioned problem, according to still another 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 used. Is a program for functioning as a device for determining based on the measurement result of the infrared reflection intensity of the molded product, and the wavelength band in which absorption by water exists in the measurement data indicating the measurement result on a computer Based on the measurement data in and the measurement data in the wavelength band where there is no water absorption, the measurement data in the wavelength band where the water absorption exists and the measurement data in the wavelength band where there is no water absorption Based on the relative reflection intensity ratio calculated by the intensity calculation function and the intensity calculation function to calculate the relative reflection intensity ratio between In accordance with the degree of divergence between the absorbance calculation function for calculating the absorbance in the wavelength band in which the absorption due to absorption, the absorbance estimated from the estimated moisture content of the molded article, and the absorbance calculated by the absorbance calculation function A surface condition determination function for determining the surface condition;
A program for realizing the above is provided.

  As described above, according to the present invention, based on the measurement data of the molded product in the wavelength band where there is no water absorption and in the wavelength band where water absorption exists, the absorbance in the wavelength band where water absorption exists. By calculating the degree of separation from the calibration curve and paying attention to the magnitude relationship between the obtained degree of separation and a predetermined threshold, it is possible to determine the surface state (surface covering state) of the molded product in a shorter time Become.

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 moisture value calculation process based on infrared reflected intensity. 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 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 explanatory drawing for demonstrating the surface state determination process which concerns on the same embodiment. 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 a wavelength where water is absorbed.

<About the behavior of absorbance 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. FIG. 3 is an explanatory diagram for explaining a moisture value calculation process based on infrared reflection intensity, and FIGS. 4 to 6 are explanatory diagrams for explaining a surface state determination process according to the present embodiment.

As shown in the upper part of FIG. 3, attention is paid to a straight line connecting the calibration reflection intensities at the wavelengths λ _b1 and λ _b2 belonging to the wavelength band not absorbed by water. The vertical coordinate C (λ _w0 ) of the intersection of this straight line and the straight line representing the wavelength band in which water is absorbed (for example, the straight line corresponding to the wavelength λ _w in FIG. 3) should be calculated by simple calculation. Is possible. By using the vertical coordinate C (λ _w0 ) of the intersection obtained in this way and C (λ _w ) that is the actual measurement value, as shown in the upper part of FIG. 3, at the wavelength λ _w Absorbance X can be calculated.

  According to Lambert-Beer's law, there is a linear relationship as shown in the lower part of FIG. 3 between the absorbance X and the moisture value. Therefore, the calculated absorbance X, a predetermined calibration curve, It is possible to calculate an unknown moisture value by using.

In order to confirm that such a relationship is also established in the modified coke, which is a molded product to which attention is paid in the present embodiment, the blending ratio of slaked lime contained in the modified coke is fixed at 10%. Measurement was performed by the infrared measuring device 5 while changing the amount of water added at the time of kneading the coke (that is, changing the moisture value of the modified coke to be produced). The obtained results are shown in FIG. As is clear from FIG. 4, the value of the relative infrared reflection intensity at λ _w where there is absorption by water changes depending on the moisture value, so that the general moisture value as shown in FIG. It can be seen that this calculation method can also be applied to the modified coke to which attention is paid in the present embodiment.

  When a calibration curve related to the modified coke produced by sufficient kneading was calculated, for example, as shown in FIG. 5, an extremely accurate calibration curve could be obtained. On the other hand, the inventor plotted the absorbance obtained as a result of measurement according to the calibration curve for the modified coke produced without sufficient kneading and having a known moisture value by the dry weight method. As shown in FIG.

  Here, the surface state of the modified coke obtained by performing sufficient kneading is good as the slaked lime is uniformly adhered to the surface of the powder coke as schematically shown in FIG. The surface state of the modified coke produced without sufficient kneading is that slaked lime is unevenly adhered to the surface of the powdered coke.

  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

  Therefore, the results shown in FIG. 5 show that the coke of the modified coke is measured according to the degree of separation between the actually measured absorbance of the modified coke and the calibration curve used when calculating the moisture value of the modified coke. It can be said that this indicates that the surface state can be determined.

  As a result of intensive studies based on such knowledge, the present inventor has determined the surface condition according to the embodiment of the present invention using measurement data at a wavelength with water absorption as described below. An apparatus and a surface state determination method have been conceived.

<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 to 9. 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 is an explanatory diagram for explaining the intensity calculation process performed by the arithmetic processing unit of the surface state determination apparatus 10 according to the present embodiment. FIG. 9 is an explanatory diagram for explaining the surface state determination processing according to the present embodiment.

  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 by infrared rays of a molding. As illustrated in FIG. 14, 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 refers to a database or the like stored in the storage unit 109 in which various parameters such as a surface state determination threshold value, information on a calibration curve, and the like are recorded. Is possible. Details of the surface state determination process performed by the arithmetic processing unit 103 will be described in detail below.

  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 illustrated in FIG. 7, the arithmetic processing unit 103 includes an intensity calculation unit 121, an absorbance calculation unit 123, a surface state determination unit 125, and a moisture amount calculation unit 127.

  The intensity calculation unit 121 is realized by, for example, a CPU, a ROM, a RAM, and the like. Based on the measurement data in the wavelength band where there is no absorption by water and the wavelength band where there is absorption by water among the measurement data showing the measurement results output from the data acquisition unit 101, the intensity calculation unit 121 The relative reflection intensity ratio between the measured data is calculated.

In the following, wavelength λ _b1 = 1780 nm and wavelength λ _b2 = 2100 nm shown in FIG. 4 and the like are shown as wavelength bands where there is no water absorption, and wavelength bands where water absorption exists are shown in FIG. For example, the wavelength λw = 1940 nm shown in FIG.

First, measurement with infrared light using a white calibration plate is performed prior to actual surface state determination processing of the modified coke, and the reflection intensities A _λb1 and A _{λw of the} white calibration plate shown in FIG. , A _λb2 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 121 identifies measurement data corresponding to the wavelengths λ _b1 , λ _w, and λ _b2 (that is, reflection intensities B _λb1 , B _λw , B _λb2 ) among the measurement data output from the data acquisition unit 101. .

Next, the intensity calculation unit 121 divides 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 , λ _w , and λ _b2. Perform strength calibration. In the example shown in FIG. 8, the calibration reflection intensity C _λb1 of the wavelength λ _b1 = (B _λb1 / A _λb1 ), the calibration reflection intensity C _λw of the wavelength λ _w = (B _λw / A _λw ), and the wavelength λ Calibration reflection intensity C _λb2 = (B _λb2 / A _λb2 ) of _b2 .

Subsequently, the intensity calculator 121 calculates a relative reflection intensity ratio based on the calibration reflection intensity at one of the wavelengths λ _b1 and λ _b2 . 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 wavelength lambda _w of the relative reflection intensity D _{lambda] w} = a _{(C λw} / C λb1), 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 121 outputs each of the relative reflection intensities D thus calculated to the absorbance calculation unit 123.

  The absorbance calculation unit 123 is realized by, for example, a CPU, a ROM, a RAM, and the like. Based on the relative reflection intensity calculated by the intensity calculation unit 121, the absorbance calculation unit 123 calculates the absorbance in a wavelength band where water absorption exists.

More specifically, the absorbance calculation unit 123 calculates the absorbance at the wavelength λw in the same manner as the method shown in the upper part of FIG. That is, the absorbance calculation section 123, the relative reflection intensity D (lambda _b1) at the wavelength lambda _b1, and the relative reflection intensity D (lambda _b2) at the wavelength lambda _b2, calculates a straight line connecting, this straight line and the wavelength lambda = 1 Compute the intersection with the straight line represented by 1940 nm. Thereafter, the absorbance calculation unit 123 uses the relative reflection intensity D (λ _w0 ) corresponding to the intersection and the relative reflection intensity D (λ _w ) calculated by the intensity calculation unit 121 to _absorb the absorbance X (λ _w ) Is calculated.

The absorbance calculation unit 123 outputs the absorbance X (λ _w ) calculated in this way to a surface state determination unit 125 and a moisture amount calculation unit 127 described later.

  In the above description, the case where the absorbance calculation unit 123 calculates the absorbance based on the relative reflection intensities at the three wavelengths has been described. However, the absorbance calculation method in the absorbance calculation unit 123 according to the present embodiment is described above. It is not limited to examples. In addition to the above calculation method, the absorbance calculation unit 123 calculates absorbance based on a method for calculating absorbance based on relative reflection intensities at two wavelengths, and multiple regression analysis of relative reflection intensities at a number of wavelengths. It is possible to use a known absorbance calculation method such as a method.

  The surface state determination unit 125 is realized by a CPU, a ROM, a RAM, and the like, for example. The surface state determination unit 125 determines the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded product and the absorbance calculated by the absorbance calculation unit. More specifically, the surface state determination unit 125 is used when calculating the moisture content of the molded product in a coordinate plane defined by the absorbance in the wavelength band where water absorption exists and the moisture content of the molded product. An index representing the degree of separation of the calculated absorbance from the calibration curve is calculated using the calibration curve, and the calculated index is used as the degree of deviation. Hereinafter, the processing in the surface state determination unit 125 will be described in detail.

Surface condition determination unit 125 is first output from the data acquisition unit 101, the supplied water amount upon the water content and the kneading of coke by moisture meter 5 (added water content), and, with respect to the addition amount of coke breeze and slaked lime With reference to the data, the estimated moisture value of the produced modified coke is calculated. This estimated moisture value (%) can be calculated by the following equation 101, for example.

  Estimated moisture value (%) = {(moisture coke water amount + added water amount) / (powder coke amount + slaked lime amount + added moisture amount)} × 100 (Equation 101)

Next, the surface state determination unit 125 defines a coordinate plane (in other words, a calibration curve as shown in FIG. 5) defined by the absorbance in the wavelength band in which absorption by water exists and the moisture content of the molded product. focusing on a coordinate plane) to the absorbance based on the calculated absorbance X (lambda _w) and the calculated estimated water content value by the calculation unit 123, calculates an index indicating the separation degree of the calibration curve of absorbance X (lambda _w) To do. Here, one or a plurality of calibration curves used when calculating the water content are stored in the storage unit 109 as parameters or a database, for example, according to actual operating conditions.

  Here, as an index representing the degree of separation from the calibration curve, for example, there are two kinds of indices as shown in FIGS. 9A and 9B.

FIG. 9A corresponds to the difference between the estimated absorbance calculated using the estimated moisture value and the calibration curve and the absorbance X (λ _w ) calculated by the absorbance calculation unit 123 (L in the figure). The difference value is used as an index.

FIG. 9B shows a calibration curve between a point defined by the absorbance X (λ _w ) calculated by the absorbance calculation unit 123 and the calculated estimated water content in the coordinate system defining the calibration curve. The case where the separation distance (the length represented by L in the figure) is used as an index is shown.

  The surface state determination unit 125 calculates any one of such indices, and compares the magnitude relationship between the calculated index and a predetermined surface state determination threshold value. Here, the threshold for determining the surface state is to analyze the correlation between the surface state of the modified coke and the relative reflection intensity based on past operation data, etc., prior to the surface state determination process of the actual modified coke. It is assumed that it is determined in advance. 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 above, the absorbance value of the modified coke that is sufficiently kneaded and has a good surface condition shows a value close to a calibration curve. Therefore, the surface state determination unit 125 has a good surface state of the modified coke when the index calculated as described above is equal to or less than the threshold for surface state determination (as shown in FIG. It is determined that the film is uniformly attached).

  Further, when the calculated index exceeds the surface condition determination threshold value, the surface condition determination unit 125 has insufficient kneading processing, and the surface condition is poor (as shown in FIG. 6, slaked lime is present on the surface of the powder coke. It is determined that the non-uniformly attached state).

  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 125 outputs information indicating the determination result thus obtained to the result output unit 105.

The moisture amount calculation unit 127 is realized by, for example, a CPU, a ROM, a RAM, and the like. The water content calculation unit 127 calculates the water content (water content) of the modified coke based on the absorbance X (λ _w ) calculated by the absorbance calculation unit 123 and a predetermined calibration curve. The method for calculating the moisture content (moisture value) is not particularly limited. For example, using a calibration curve as shown in FIG. 9, a straight line corresponding to the obtained absorbance X (λ _w ) and calibration. It is possible to use a method of specifying an intersection with a line and determining a coordinate value of a moisture value that defines the intersection.

  The moisture amount calculation unit 127 outputs information regarding the moisture amount (moisture value) thus obtained to the result output unit 105.

  As described above, in the arithmetic processing unit 103 according to the present embodiment, the wavelength at which absorption by water exists based on the measurement data of the molded product in the wavelength band in which absorption by water does not exist and the wavelength band in which absorption by water exists. The degree of separation between the absorbance of the band and the calibration curve is calculated, and the surface state of the molded article is determined by comparing the obtained degree of separation with the magnitude relation between the surface state determination threshold value. 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.

  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. 10 and 11. FIG. 10 is a flowchart illustrating an example of the pre-processing flow of the surface state determination method according to the present embodiment, and FIG. 11 is a flowchart illustrating an example of the flow of the surface state determination method according to the present embodiment. .

[Pre-processing flow]
First, referring to FIG. 10, 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 three wavelengths λ _b1 , λ _w , and λ _b2 is measured by the infrared measuring device 9 using a white calibration plate (step S101), and the obtained measurement result (reflection intensity) is stored in the storage unit 109. And so on. Then, using the modified coke whose surface state and moisture value are known, the reflection intensity of the wavelengths λ _b1 , λ _w , λ _b2 is measured by the infrared measuring device 9 (step S103).

Next, the intensity calculation unit 121 of the arithmetic processing unit 103 calculates the calibration reflection intensity from the obtained measurement result of the modified coke (step S105), and subsequently, between the wavelengths λ _b1 , λ _w , λ _b2 . Relative reflection intensity is calculated (step S107). Further, the absorbance calculation section 123 of the processing unit 103 utilizes the calculated relative reflection intensity, and calculates the absorbance at a wavelength lambda _w (step S109).

  Here, it is determined whether the number of samples relating to the obtained measurement result of the modified coke is sufficient (step S111). 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 S213 described later is performed. If it is determined that the number of samples is insufficient, the process returns to step S203, and measurement is continued using modified coke whose surface state and moisture value are 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.

  When it is determined that the number of samples is sufficient, a calibration curve is calculated from the calculated absorbance and the known moisture value, and a threshold value for determining the surface state is determined from the calculated absorbance and the known surface state (step S113). The determined threshold value for surface condition determination and calibration curve are 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 conveyed on the conveyor and measures the reflection intensities of the three wavelengths λ _b1 , λ _w , and λ _b2 (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 121 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 121 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 measured in advance (step S123). Subsequently, the relative reflection intensity between the wavelengths λ _b1 , λ _w , and λ _b2 is calculated (step S125). Thereafter, the intensity calculation unit 121 outputs the obtained relative reflection intensity to the absorbance calculation unit 123.

The absorbance calculation unit 123 calculates the absorbance X (λ _w ) of the wavelength λ _w based on the relative reflection intensity output from the intensity calculation unit 121 (step S127), and the obtained absorbance X (λ _w ) It outputs to the surface state determination part 125 and the moisture content calculation part 127.

After calculating the estimated moisture value of the modified coke of interest, the surface state determination unit 125 uses the absorbance X (λ _w ) output from the absorbance calculation unit 123 and a predetermined calibration curve. Then, an index representing the degree of separation from the calibration curve is calculated (step S129). Thereafter, the surface state determination unit 125 determines the calculated index 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 S131). When the determination of the surface state is completed, the surface state determination unit 125 generates information indicating the obtained determination result and outputs the information to the result output unit 105.

On the other hand, the water content calculation unit 127 calculates the water value of the modified coke of interest using the absorbance X (λ _w ) calculated by the absorbance calculation unit 123 and the calibration curve (step S133), Information indicating the obtained moisture value is generated and output to the result output unit 105.

  When the result output unit 105 acquires the information indicating the determination result and the information indicating the moisture value, 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 these determination results on the display screen (step S135). 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 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. 12 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 121 Intensity calculation part 125 Surface state determination part 123 Absorbance calculation part 127 Water content calculation part

Claims (12)

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 in the wavelength band in which the absorption by water exists and the measurement data in the wavelength band in which the absorption by water does not exist among the measurement data indicating the measurement result, the wavelength at which the absorption by the water exists An intensity calculation unit for calculating a relative reflection intensity ratio between the measurement data in the band and the measurement data in the wavelength band where there is no water absorption;
Based on the relative reflection intensity ratio calculated by the intensity calculation unit, an absorbance calculation unit that calculates an absorbance in a wavelength band where absorption by the water exists;
A surface state determination unit that determines the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded article and the absorbance calculated by the absorbance calculation unit;
A surface state determination device comprising: The surface state determination unit
Utilizing a calibration curve used in calculating the moisture content of the molded product in a coordinate plane defined by the absorbance in the wavelength band where the water absorption exists and the moisture content of the molded product, Calculate an index representing the degree of separation of the calculated absorbance from the calibration curve,
The surface state determination apparatus according to claim 1, wherein the calculated index is the degree of deviation. The surface state determination device according to claim 2, wherein the surface state determination unit determines that the surface state of the molded article is good when the calculated index is equal to or less than a predetermined threshold value. . The molded product is manufactured by kneading the at least two kinds of substances,
The surface condition determination unit determines that the kneading of the at least two kinds of substances is insufficient when the calculated index exceeds a predetermined threshold value. Surface condition judgment device. The surface condition determination unit uses the difference between the estimated absorbance calculated using the estimated moisture content and the calibration curve and the absorbance calculated by the absorbance calculation unit as the index. The surface state determination apparatus according to any one of claims 2 to 4. The surface state determination unit uses, as the index, a separation distance between the calibration curve and a point defined by the absorbance calculated by the absorbance calculation unit and the estimated moisture amount on the coordinate plane. The surface state determination apparatus according to any one of claims 2 to 4. 7. The water content calculation unit according to claim 1, further comprising a water content calculation unit that calculates a water content of the molded product based on the absorbance calculated by the absorbance calculation unit and a calibration curve. The surface state determination apparatus according to item 1. The intensity calculation unit uses the measurement data of the reflection intensity of infrared light on the white calibration plate, and divides each of the measurement data by the measurement data at the corresponding wavelength of the white calibration plate. The surface state determination apparatus according to claim 1, wherein an intensity is calculated, and the relative reflection intensity ratio is calculated using the calculated calibration reflection intensity. The surface state determination device according to claim 1, wherein the molded product is a 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 in the wavelength band in which the absorption by water exists and the measurement data in the wavelength band in which the absorption by water does not exist among the measurement data indicating the measurement result, the wavelength at which the absorption by the water exists An intensity calculation step for calculating a relative reflection intensity ratio between the measurement data in the band and the measurement data in the wavelength band where there is no water absorption;
Based on the relative reflection intensity ratio calculated in the intensity calculation step, an absorbance calculation step for calculating an absorbance in a wavelength band where absorption by the water exists;
A surface state determination step of determining the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded product and the absorbance calculated in the absorbance calculation 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 measurement device that measures the molded product using the infrared light in a predetermined wavelength band, and generates measurement data indicating a measurement result 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 in the wavelength band in which the absorption by water exists and the measurement data in the wavelength band in which the absorption by water does not exist among the measurement data indicating the measurement result, the wavelength at which the absorption by the water exists An intensity calculation unit for calculating a relative reflection intensity ratio between the measurement data in the band and the measurement data in the wavelength band where there is no water absorption;
Based on the relative reflection intensity ratio calculated by the intensity calculation unit, an absorbance calculation unit that calculates an absorbance in a wavelength band where absorption by the water exists;
A surface state determination unit that determines the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded article and the absorbance calculated by the absorbance calculation unit;
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 in the wavelength band in which the absorption by water exists and the measurement data in the wavelength band in which the absorption by water does not exist among the measurement data indicating the measurement result, the wavelength at which the absorption by the water exists An intensity calculation function for calculating a relative reflection intensity ratio between measurement data in a band and measurement data in a wavelength band where there is no water absorption;
Based on the relative reflection intensity ratio calculated by the intensity calculation function, an absorbance calculation function for calculating an absorbance in a wavelength band in which absorption by the water exists;
A surface state determination function for determining the surface state according to the degree of deviation between the absorbance estimated from the estimated moisture content of the molded product and the absorbance calculated by the absorbance calculation function;
A program to realize

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