JP2021063668A - Concentration output device, concentration measuring device, and concentration output program - Google Patents

Abstract

To provide a concentration output device, a concentration measuring device and a concentration output program with which it is possible to measure with good accuracy the concentration of a liquid component of a suspended liquid, as compared with the case where only the color information of an image is used in which a suspended liquid including a solid component and a colored liquid component is imaged.SOLUTION: A concentration output device 10 includes a CPU 11A. The CPU 11A acquires light intensity which is obtained by irradiating a suspended liquid including a solid component and a colored liquid component with light, acquires the color information of the suspended liquid from an image in which the suspended liquid is imaged, and outputs, utilizing a relationship between the predetermined concentration of the solid component and the color information of the suspended liquid, the concentration of the solid component obtained from the acquired light intensity and the concentration of the colored liquid component from the color information of the suspended liquid.SELECTED DRAWING: Figure 1

Description

The present invention relates to a concentration output device, a concentration measuring device, and a concentration output program.

For example, Patent Document 1 describes a determination system for determining the state of a liquid material to be determined. This determination system consists of an optical sensor having an inspection unit in which a liquid material enters, a light emitting element that emits detection light to the inspection unit, and a color detection unit that detects color information of the detection light that has passed through the liquid material, and an optical sensor. It is provided with a color component difference calculation unit that calculates the color component difference of the liquid material based on the output detected value. Further, this determination system includes a determination data storage unit that stores at least one determination data that divides the state of the liquid according to the difference in color components according to the type of the liquid. Further, this determination system selects at least one from each determination data according to the type of the determination target liquid, and based on the selected determination data and the color component difference of the determination target liquid, the determination target liquid. It includes a determination unit for determining the state of the body and an output unit for outputting the determination result.

Further, in Patent Document 2, the spatial intensity distribution of the diffracted / scattered light obtained by irradiating the measured particle group in the dispersed state with laser light is measured, and the particle size distribution of the measured particle group is calculated from the measurement result. The particle size distribution measuring device to be used is described. In this particle size distribution measuring device, a sample cell accommodating a group of particles to be measured for irradiating a laser beam is detachably attached and detached in a state where two glass plates and these are crossed with respect to the optical axis of the irradiating laser beam. It is composed of a supporting member to be supported, and a suspension in which a group of particles to be measured is dispersed in a medium is sandwiched and statically held between the two glass plates.

International release WO2014 / 192912 Japanese Unexamined Patent Publication No. 8-178825

By the way, in a suspension containing a solid component and a colored liquid component, the ratio of the concentration of the solid component to the concentration of the liquid component may change with time. If the concentration of each component of the suspension deviates from the normal range, the performance of the suspension deteriorates, so it is necessary to monitor the concentration state of each component. However, only the color information of the image obtained by photographing the suspension containing the solid component and the colored liquid component may affect the color information of the liquid component because the solid component is also colored. In this case, it is difficult to accurately measure the concentration of the liquid component of the suspension.

In the present invention, a concentration capable of accurately measuring the concentration of the liquid component of the suspension as compared with the case where only the color information of the image obtained by photographing the suspension containing the solid component and the colored liquid component is used. It is an object of the present invention to provide an output device, a concentration measuring device, and a concentration output program.

In order to achieve the above object, the concentration output device according to the first aspect includes a processor, and the light intensity obtained by irradiating a suspension containing a solid component and a colored liquid component with light is obtained. The acquisition is obtained by acquiring the color information of the suspension from an image obtained by photographing the suspension, and utilizing the relationship between the predetermined concentration of the solid component and the color information of the suspension. The concentration of the colored liquid component is output from the concentration of the solid component of the solid component obtained from the light intensity and the color information of the suspension.

Further, in the concentration output device according to the second aspect, in the concentration output device according to the first aspect, the suspension further contains an uncolored liquid component, and the processor is subjected to the concentration of the solid component and the coloring. The concentration of the uncolored liquid component is output from the concentration of the liquid component.

Further, the concentration output device according to the third aspect is the concentration output device according to the second aspect, wherein the relationship is defined with respect to a plurality of concentrations of the solid component, and the concentration of the colored liquid component and the suspension. It is said to be related to the color information of the turbid liquid.

Further, the concentration output device according to the fourth aspect is the concentration output device according to the third aspect, wherein the relationship is defined with respect to a plurality of concentrations of the solid component, and the concentration of the colored liquid component and the suspension. It is expressed as an approximate expression or a look-up table that defines the relationship with the color information of the turbid liquid.

Further, in the density output device according to the third aspect or the fourth aspect, the density output device according to the fifth aspect has the initial value of the color information of the suspension, and the processor has the initial value. When the difference between the value and the value indicated by the color information of the suspension is equal to or more than a predetermined range, it is determined that the concentration of the colored liquid component is abnormal.

Further, the density output device according to the sixth aspect is information in which the color information is represented as the brightness or brightness of a specific color in the density output device according to any one of the first to fifth aspects. It is said that.

Further, in the density output device according to the sixth aspect, the specific color is said to be a color having a complementary color relationship with the color of the suspension in the density output device according to the sixth aspect.

Further, in the concentration output device according to the eighth aspect, in the concentration output device according to any one of the second to fifth aspects, the colored liquid component is an oil component and the uncolored liquid. The component is said to be a solvent component.

Further, in the concentration output device according to the ninth aspect, in the concentration output device according to the eighth aspect, the processor uses the solid concentration which is the concentration of the solid component, the oil concentration which is the concentration of the oil component, and the solvent component. Control is performed to display the solvent concentration, which is the concentration of.

Further, in the concentration output device according to the tenth aspect, in the concentration output device according to the ninth aspect, the processor causes the difference between the solid concentration value and the solid concentration reference value, the oil concentration value and the oil. The concentration of the suspension is abnormal when at least one of the difference from the reference value of the concentration and the difference between the value of the solvent concentration and the reference value of the solvent concentration is equal to or more than a predetermined range. Controls to display alarm information indicating that.

Further, in order to achieve the above object, the concentration measuring device according to the eleventh aspect includes the concentration output device according to any one of the first to tenth aspects and a light source for irradiating the suspension with light. A light receiving unit for detecting the light intensity of the light applied to the suspension and a detector for photographing the suspension are provided.

Further, in order to achieve the above object, the concentration output program according to the twelfth aspect obtains the light intensity obtained by irradiating a suspension containing a solid component and a colored liquid component with light, and obtains the suspension. The color information of the suspension is acquired from the photographed image of the liquid, and it is obtained from the acquired light intensity by utilizing the relationship between the predetermined concentration of the solid component and the color information of the suspension. A computer is made to output the concentration of the colored liquid component from the concentration of the solid component and the color information of the suspension.

According to the first aspect, the eleventh aspect, and the twelfth aspect, the liquid of the suspension is compared with the case where only the color information of the image of the suspension containing the solid component and the colored liquid component is used. It has the effect of being able to measure the concentration of components with high accuracy.

According to the second aspect, there is an effect that the concentration of the uncolored liquid component contained in the suspension can be measured.

According to the third aspect, there is an effect that the concentration of the colored liquid component can be easily obtained as compared with the case where the relationship between the concentration of the solid component and the color of the colored liquid component is not considered.

According to the fourth aspect, it is possible to easily obtain the concentration of the colored liquid component as compared with the case where the approximation formula or the look-up table is not considered as the relationship between the concentration of the solid component and the color of the colored liquid component. It has the effect of being able to do it.

According to the fifth aspect, there is an effect that an abnormality in the concentration of the oil component can be grasped.

According to the sixth aspect, there is an effect that the color information of the suspension can be extracted with high accuracy as compared with the case where the brightness or the brightness of the specific color is not considered.

According to the seventh aspect, there is an effect that the color information of the suspension can be extracted with high accuracy as compared with the case where the colors having a complementary color relationship are not taken into consideration.

According to the eighth aspect, there is an effect that the concentrations of each of the solid component, the oil component, and the solvent component can be measured.

According to the ninth aspect, there is an effect that the concentration of each component of the suspension can be grasped.

According to the tenth aspect, there is an effect that an abnormality in the concentration of the suspension can be grasped.

It is a block diagram which shows an example of the electric structure of the density | concentration output apparatus which concerns on embodiment. It is a block diagram which shows an example of the functional structure of the concentration measuring apparatus which concerns on embodiment. It is a graph which shows an example of the relationship between G color luminance and oil density for each solid density which concerns on embodiment. It is a graph which shows an example of the relationship between the solid concentration and a constant α, and the relationship between a solid concentration and a constant β which concerns on embodiment. It is a graph which shows an example of the relationship between the suspended solids concentration and the solid concentration which concerns on embodiment. It is a graph which shows an example of the approximate expression y = αe ^{(βx) which concerns on embodiment.} It is a flowchart which shows an example of the processing flow by the density | concentration output program which concerns on embodiment. It is a figure which shows an example of the measurement result of the evaluation target sample which concerns on Example. It is a graph which shows the comparison result of the lubricating oil concentration which concerns on Example. It is a graph which shows the comparison result of the oil concentration which concerns on Example. It is a graph which shows the comparison result of the solid concentration which concerns on Example.

Hereinafter, an example of a mode for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of an electrical configuration of the concentration output device 10 according to the present embodiment.

As shown in FIG. 1, the concentration output device 10 according to the present embodiment includes a control unit 11, a storage unit 12, a display unit 13, an operation unit 14, and a communication unit 15. As an example, a general-purpose computer device such as a server computer or a personal computer (PC) is applied to the concentration output device 10.

The control unit 11 includes a CPU (Central Processing Unit) 11A, a ROM (Read Only Memory) 11B, a RAM (Random Access Memory) 11C, and an input / output interface (I / O) 11D, and each of these units is via a bus. Are connected to each other.

Each functional unit including the storage unit 12, the display unit 13, the operation unit 14, and the communication unit 15 is connected to the I / O 11D. Each of these functional units can communicate with the CPU 11A via the I / O 11D.

The control unit 11 may be configured as a sub control unit that controls a part of the operation of the concentration output device 10, or may be configured as a part of a main control unit that controls the entire operation of the concentration output device 10. Good. For example, an integrated circuit such as an LSI (Large Scale Integration) or an IC (Integrated Circuit) chipset is used for a part or all of each block of the control unit 11. An individual circuit may be used for each of the above blocks, or a circuit in which a part or all of them are integrated may be used. Each of the above blocks may be provided integrally, or some blocks may be provided separately. In addition, a part of each of the above blocks may be provided separately. The integration of the control unit 11 is not limited to the LSI, and a dedicated circuit or a general-purpose processor may be used.

As the storage unit 12, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like is used. The concentration output program 12A according to the present embodiment is stored in the storage unit 12. The density output program 12A may be stored in the ROM 11B.

The density output program 12A may be installed in the density output device 10 in advance, for example. The concentration output program 12A may be realized by storing it in a non-volatile non-transitory storage medium or distributing it via a network and appropriately installing it in the concentration output device 10. Examples of non-volatile non-temporary storage media include CD-ROMs (Compact Disc Read Only Memory), optical magnetic disks, HDDs, DVD-ROMs (Digital Versatile Disc Read Only Memory), flash memories, memory cards, and the like. Is assumed.

For the display unit 13, for example, a liquid crystal display (LCD), an organic EL (Electro Luminescence) display, or the like is used. The display unit 13 may have a touch panel integrally. The operation unit 14 is provided with a device for operation input such as a keyboard and a mouse. The display unit 13 and the operation unit 14 receive various instructions from the user of the concentration output device 10. The display unit 13 displays various information such as the result of the process executed in response to the instruction received from the user and the notification for the process.

The communication unit 15 is connected to a network such as the Internet, LAN (Local Area Network), WAN (Wide Area Network), and can communicate with an external device such as an image forming apparatus via the network. ..

By the way, as described above, since the solid component is also colored only by the color information of the image obtained by photographing the suspension, the color information of the liquid component may be affected. In this case, it is difficult to accurately measure the concentration of the liquid component of the suspension. The suspension referred to here contains a solid component and a colored liquid component. The suspension may also contain a solid component, a colored liquid component, and an uncolored liquid component. The solid component is, for example, PTFE (Polytetrafluoroethylene) or the like. The colored liquid component is, for example, an oil component, and the uncolored liquid component is, for example, a solvent component.

In the present embodiment, a suspension containing a solid component, an oil component, and a solvent component will be described as an example, but the same applies to a suspension containing only the solid component and the oil component.

The CPU 11A of the concentration output device 10 according to the present embodiment functions as each unit shown in FIG. 2 by writing the concentration output program 12A stored in the storage unit 12 into the RAM 11C and executing the program. The CPU 11A is an example of a processor.

FIG. 2 is a block diagram showing an example of a functional configuration of the concentration measuring device 40 according to the present embodiment.

As shown in FIG. 2, the concentration measuring device 40 according to the present embodiment includes a concentration output device 10, a light source 30, a light receiving unit 33, and a detector 34. The CPU 11A of the concentration output device 10 according to the present embodiment functions as an acquisition unit 20, a calculation unit 21, an analysis unit 22, an output unit 23, and a display control unit 24.

First, as a preliminary preparation, the suspension 31 to be measured is collected in a predetermined container (not shown). Then, in a state where the suspension 31 is irradiated with the light of the light source 30 (for example, infrared light or near-infrared light), the transmitted light or scattered light of the suspension 31 is used by using the light receiving unit (for example, the light receiving sensor) 33. Is received, and the suspension 31 is photographed using a detector (for example, a camera) 34. At this time, the shorter the optical path length is, the more desirable it is, in order to make it less affected by the color of the suspension 31. It is also desirable that the standard sample 32 be photographed before the image of the suspension 31 or at the same time as the image of the suspension 31. For the standard sample 32, as an example, a white calibration plate or a suspension having a known concentration is used.

The acquisition unit 20 acquires a light intensity signal representing the light intensity according to the transmitted light or the scattered light of the suspension 31 from the light receiving unit 33. In addition, the acquisition unit 20 acquires an image of the suspension 31 taken from the detector 34. Further, the acquisition unit 20 acquires an image of the standard sample 32 from the detector 34 when the standard sample 32 is photographed by the detector 34.

The calculation unit 21 calculates and outputs the concentration of the solid component (hereinafter, referred to as “solid concentration”) from the light intensity signal acquired by the acquisition unit 20.

The analysis unit 22 analyzes the image acquired by the acquisition unit 20 to obtain the color information of the suspension 31.

The output unit 23 determines the concentration of the oil component (hereinafter, referred to as “oil concentration”) based on the solid concentration obtained by the calculation unit 21 and the color information of the suspension 31 obtained by the analysis unit 22. Output. This color information is, for example, information expressed as the brightness or brightness of a specific color. Further, the specific color is, for example, a color having a complementary color relationship with the color of the suspension 31. Since the color of the suspension 31 is mainly orange, which is the color of the oil component, the color having a complementary color relationship with the orange is referred to as green (hereinafter, also referred to as "G color") as an example. ) Applies. By applying this complementary color, the color information of the suspension 31 is extracted with high accuracy.

The output unit 23 outputs the concentration of the solvent component (hereinafter, referred to as “solvent concentration”) from the solid concentration and the oil concentration obtained as described above.

Specifically, the output unit 23 outputs the oil concentration according to the plurality of solid concentrations by using the relationship information in which the relationship between the oil concentration and the color information of the suspension 31 is predetermined. That is, this relationship information is information indicating the relationship between the oil concentration and the color information of the suspension 31, which is defined for a plurality of concentrations of the solid component. This relational information is, for example, information represented as an approximate expression or a look-up table.

Here, with reference to FIGS. 3 and 4, a method for deriving an approximate expression, which is an example of the relational information, will be specifically described. As an example, regression analysis using a lubricating oil having a known concentration is used to derive the approximate expression. The lubricating oil is an example of a suspension. Here, as an example, the relationship between the G color luminance and the oil concentration is plotted for each solid concentration using 15 levels of lubricating oil having different solid concentrations and oil concentrations. It is assumed that the G color brightness is measured in advance for each lubricating oil.

FIG. 3 is a graph showing an example of the relationship between the G color luminance and the oil concentration for each solid density according to the present embodiment. In FIG. 3, the horizontal axis represents the G color brightness of the lubricating oil, and the vertical axis represents the oil concentration (unit: wt%). wt% represents the weight percent concentration. R ² is a coefficient of determination, and the closer it is to 1, the higher the accuracy.

From the graph shown in FIG. 3, an approximate expression expressing the relationship between the G color luminance and the oil concentration is derived for each solid density (for example, 0 wt%, 1.9 wt%, 4.1 wt%). Specifically, as an example, the following equations (1) to (3) can be obtained. It should be noted that these approximate expressions are prepared for each of the 15 levels of lubricating oil. x indicates the G color brightness, and y indicates the oil concentration (wt%). Instead of the approximate expression, the contents of the expressions (1) to (3) may be represented as a look-up table.

^{y = 1076.1e -0.034x, R 2 =} 0.9896, at0wt% (1)
y = 82.208e ^−0.021x , R ² = 0.9907, at 1.9 wt% (2)
y = 19.142e ^−0.014x , R ² = 0.9797, at 4.1 wt% (3)

However, the color information of the suspension 31 is not limited to the brightness or lightness of the G color, and may be the brightness or lightness of red (R color) or the brightness or lightness of blue (B color).

From the above, it can be seen that the oil concentration can be analyzed using the approximate expression y = αe ^(βx). Note that α and β are constants and are determined based on the solid concentration in the lubricating oil. Here, the exponential function is used, but the function that provides the best coefficient of determination may be used. Specifically, from the graph of FIG. 3 described above, as shown in FIG. 4, the relationship between the solid concentration and the constant α and the relationship between the solid concentration and the constant β are plotted as an example.

FIG. 4 is a graph showing an example of the relationship between the solid concentration and the constant α and the relationship between the solid concentration and the constant β according to the present embodiment. In FIG. 4, the horizontal axis represents the solid concentration (wt%), the left side of the vertical axis represents the constant α, and the right side of the vertical axis represents the constant β.

From the graph shown in FIG. 4, an approximate expression expressing the relationship between the solid concentration and the constant α and an approximate expression expressing the relationship between the solid concentration and the constant β are derived. Specifically, as an example, the following equations (4) and (5) can be obtained. x indicates a solid concentration (wt%), and y indicates a constant α or a constant β. Instead of the approximate expression, the contents of the expressions (4) and (5) may be represented as a look-up table.

α: y = 836.71e ^−0.974x , (4)
β: y = 0.0048x-0.0327 (5)

That is, when the solid concentration is calculated from the light intensity signal obtained from the light receiving unit 33, the constant α and the constant β are determined with reference to the above equations (4) and (5). The above approximate expression y = αe ^(βx) is determined by the determined constant α and the constant β. From the determined approximate expression y = αe ^(βx) , the concentration of the oil component corresponding to the G color brightness can be obtained.

The equations (1) to (5) obtained as described above are stored in advance in, for example, the storage unit 12.

Here, the analysis unit 22 analyzes the image of the standard sample 32 and measures the relationship between the G color luminance and the oil concentration for each solid concentration of the suspension contained in the standard sample 32. The analysis unit 22 corrects the approximate expressions represented by the above equations (1) to (3) by using the measurement results of the standard sample 32. That is, the analysis unit 22 corrects the measurement error caused by the daily difference or the like with respect to the above equations (1) to (3) by using the measurement result of the standard sample 32. This correction is reflected in the equation (4) of the constant α and the equation (5) of the constant β. For this correction, as an example, a method of multiplying the measurement result of the standard sample 32 by the approximate equations represented by the above equations (1) to (3) is used. For the standard sample 32, a white calibration plate or the like may be used instead of the suspension having a known concentration.

Next, with reference to FIGS. 5 and 6, the concentration output processing of each component by the output unit 23 will be specifically described.

FIG. 5 is a graph showing an example of the relationship between the suspended solids concentration and the solid concentration according to the present embodiment. In FIG. 5, the horizontal axis represents the suspended solids concentration (unit: mg / L), and the vertical axis represents the solid concentration (wt%).

The suspended solids concentration is measured using an MLSS (Mixed Liquor Suspended Solids) meter (for example, IM-50P, manufactured by Iijima Electronics Co., Ltd.) immersed in a lubricating oil having a known concentration. The MLSS meter is an example of the light receiving unit 33, receives transmitted light or scattered light from the lubricating oil, and measures the concentration of suspended solids according to the light intensity signal. Here, as an example, the relationship between the suspended solids concentration and the solid concentration is plotted using a plurality of levels of lubricating oil having a known concentration. From the graph shown in FIG. 5, an approximate expression expressing the relationship between the suspended solids concentration and the solid concentration is derived. Specifically, as an example, the following equation (6) can be obtained. x indicates the suspended solids concentration (mg / L), and y indicates the solid concentration (wt%). Instead of the approximate expression, the content of the expression (6) may be expressed as a lookup table.

y = (1 × ^10-8 ) x ² + 0.0002x, R ² = 0.993 (6)

The formula (6) obtained as described above is stored in advance in, for example, the storage unit 12.

When measuring the concentration of each component of the lubricating oil, which is an example of the suspension 31, the calculation unit 21 uses the suspended solids concentration measured by the MLSS meter immersed in the lubricating oil to be measured as an example. Using the formula (6), it is converted into a solid concentration and output. In the example of FIG. 5, solid concentration = 1.5 wt% is output.

Then, the output unit 23 uses the above equations (4) and (5) based on the solid concentration (1.5 wt% in this case) obtained by the calculation unit 21, as shown in FIG. 6 as an example. In addition, the constant α and the constant β are determined, and the above approximate expression y = αe ^(βx) is determined by the determined constant α and the constant β.

FIG. 6 is a graph showing an example of the approximate expression y = αe ^{(βx) according to the present embodiment.} In FIG. 6, the horizontal axis represents the G color brightness of the suspension, and the vertical axis represents the oil concentration (wt%).

When the solid concentration is 1.5 wt%, the constant α = 194.120 and the constant β = −0.026 are determined by using the above formulas (4) and (5). From this, as shown in FIG. 6, the approximate expression when the solid concentration is 1.5 wt% is determined to be ^{y = 194.120e (−0.026x).}

The output unit 23 sets the oil concentration corresponding to the color information (for example, G color luminance) of the lubricating oil obtained by the analysis unit 22 as an approximate expression y = 194 when the solid concentration shown in FIG. 6 is 1.5 wt%. Output using 120e ^(-0.026x). In the example of FIG. 6, when the G color luminance = 105, the oil concentration = 13.3 wt% is output. Further, the solvent concentration is output from these solid concentration and oil concentration. If the concentration of the colored oil component is known, the concentration of the uncolored solvent component can be known from the specific gravity of each of the oil and the solvent and the volume of the liquid component.

^{The relational information (for example, the approximate expression y = 194.120e (-0.026x)} ) that defines the relationship between the color information of the lubricating oil (for example, G color brightness) and the oil concentration for each solid concentration is the lubricating oil. It has the initial value of the color information (for example, G color brightness) of. In this case, the output unit 23 determines that the difference between this initial value and the value indicated by the color information of the lubricating oil (for example, G color luminance) obtained from the image of the lubricating oil is equal to or greater than a predetermined range. Judge that the oil concentration is abnormal. The display control unit 24 may control the display of the determination result on the display unit 13. As an example, a message indicating that the oil concentration is abnormal may be displayed.

Further, the display control unit 24 controls the display unit 13 to display the solid concentration, the oil concentration, and the solvent concentration output from the output unit 23. As an example, these solid concentration, oil concentration, and solvent concentration are represented by weight percent concentration (wt%) as shown in FIG. 8 described later.

Further, the display control unit 24 sets the difference between the solid concentration value and the solid concentration reference value, the difference between the oil concentration value and the oil concentration reference value, and the solvent concentration value and the solvent concentration reference value. When at least one of the differences is equal to or greater than a predetermined range, control may be performed to display alarm information indicating that the concentration of the lubricating oil is abnormal. As an example, the values of the solid concentration, the oil concentration, and the solvent concentration when the concentration of the lubricating oil is within the normal range may be applied to the reference value referred to here. Further, as this alarm information, as an example, a message indicating that the concentration of the lubricating oil is abnormal may be displayed, or the concentration display of the component indicating the abnormality among the solid component, the oil component, and the solvent component may be displayed. The display form of the column may be changed. To change the display form, for example, change the color of the density display column to a conspicuous color such as red or yellow, underline the characters in the density display column, make the characters italic, or increase the character size. Various forms such as yellowing and so on are assumed. In addition, the difference between the solid concentration value and the solid concentration reference value, the difference between the oil concentration value and the oil concentration reference value, the difference between the solvent concentration value and the solvent concentration reference value, and this difference Based on this, the value of the amount of the solid component or the oil and the solvent to be replenished may be displayed.

Next, the operation of the concentration output device 10 according to the present embodiment will be described with reference to FIG. 7.

FIG. 7 is a flowchart showing an example of the processing flow by the concentration output program 12A according to the present embodiment.

As a preliminary preparation, the lubricating oil, which is an example of the suspension 31, was irradiated with infrared light or near-infrared light from the light source 30. Then, using an MLSS meter, which is an example of the light receiving unit 33 immersed in the lubricating oil, the transmitted light or the scattered light from the lubricating oil was received, and the concentration of suspended solids corresponding to the light intensity signal was measured. In addition, the lubricating oil was photographed by the detector 34.

First, when the density output device 10 is instructed to execute the density output process, the CPU 11A starts the density output program 12A and executes each of the following steps.

In step 100 of FIG. 7, the CPU 11A acquires the suspended solids concentration corresponding to the light intensity signal of the transmitted light or the scattered light from the lubricating oil from the light receiving unit 33, and captures the image of the lubricating oil from the detector 34. To get.

In step 101, the CPU 11A converts the suspended solids concentration acquired in step 100 into a solid concentration and outputs it using the above formula (6) as an example.

In step 102, the CPU 11A determines the constant α and the constant β, as shown in FIG. 6, as an example, using the above equations (4) and (5) based on the solid concentration output in step 101. , The approximate expression y = αe ^(βx) is determined by the determined constant α and the constant β.

In step 103, the CPU 11A analyzes the image acquired in step 100 to acquire the color information of the lubricating oil (for example, G color luminance).

In step 104, the CPU 11A outputs the oil concentration corresponding to the color information of the lubricating oil acquired in step 103 using the approximate expression y = αe ^(βx) determined in step 102.

In step 105, the CPU 11A outputs the solvent concentration based on the solid concentration output in step 101 and the oil concentration output in step 104.

In step 106, the CPU 11A controls to display the solid concentration, the oil concentration, and the solvent concentration obtained as described above on the display unit 13, and ends a series of processes by the concentration output program 12A.

Next, examples of the concentration measuring method according to the present embodiment will be specifically described with reference to FIGS. 8 to 11.

FIG. 8 is a diagram showing an example of the measurement results of the evaluation target sample according to the example.

In this example, 11 samples to be evaluated (lubricating oils A to K) were prepared. Each of these lubricating oils A to K differs in the concentration of the lubricating oil, the weight of the solid component, and the weight of the oil component. Then, as a result of carrying out the concentration measuring method according to the present embodiment on these lubricating oils A to K, as an example, as shown in FIG. 8, the concentration of each component (here, the weight percent concentration (wt%)). The measurement result of) is displayed on the display unit 13.

FIG. 9 is a graph showing the comparison results of the lubricating oil concentrations according to the examples. In FIG. 9, the horizontal axis shows the lubricating oil concentration (wt%) when the simple measurement is applied, and the vertical axis shows the lubricating oil concentration (wt%) when the detailed measurement is applied.

However, the simple measurement is a concentration measuring method according to the present embodiment, and is a method for simply measuring the lubricating oil concentration by using ^{the above approximate expression y = αe (βx).} On the other hand, the detailed measurement is a method of measuring the lubricating oil concentration in detail by using, for example, thermal analysis and weight measurement. The lubricating oil concentration referred to here is the concentration of a lubricating component including an oil component and a solid component.

The graph of FIG. 9 is a plot of the lubricating oil concentration when the simple measurement is applied and the lubricating oil concentration when the detailed measurement is applied to each of the evaluation target samples of FIG. According to the example of FIG. 9, the coefficient of determination R ^{2 =} 0.985, and is obtained, it can be seen it is possible to measure the lubricating oil concentration with high accuracy by a simple method.

FIG. 10 is a graph showing the comparison result of the oil concentration according to the example. In FIG. 10, the horizontal axis shows the oil concentration (wt%) when the simple measurement is applied, and the vertical axis shows the oil concentration (wt%) when the detailed measurement is applied.

The graph of FIG. 10 is a plot of the oil concentration when the simple measurement is applied and the oil concentration when the detailed measurement is applied to each of the evaluation target samples of FIG. According to the example of FIG. 10, the coefficient of determination R ^{2 =} 0.981, and is obtained, it can be seen with high accuracy by a simple method it is possible to measure the oil concentration.

FIG. 11 is a graph showing the comparison result of the solid concentration according to the example. In FIG. 11, the horizontal axis shows the solid concentration (wt%) when the simple measurement is applied, and the vertical axis shows the solid concentration (wt%) when the detailed measurement is applied.

The graph of FIG. 11 is a plot of the solid concentration when the simple measurement is applied and the solid concentration when the detailed measurement is applied to each of the evaluation target samples of FIG. According to the example of FIG. 11, the coefficient of determination R ^{2 =} 0.9529, which is obtained, it can be seen it is possible to measure the solids concentration with high accuracy in a simple manner.

As described above, according to the present embodiment, the concentration of the solid component is measured by the light intensity from the suspension containing the solid component and the liquid component, and further, the concentration of the solid component and the image of the suspension taken are taken. The concentration of the liquid component is measured based on the color information. Therefore, the concentration of the liquid component of the suspension is measured with high accuracy.

In each of the above embodiments, the processor refers to a processor in a broad sense, and is a general-purpose processor (for example, CPU: Central Processing Unit, etc.) or a dedicated processor (for example, GPU: Graphics Processing Unit, ASIC: Application). Specific Integrated Circuit, FPGA: Field Programmable Gate Array, programmable logic device, etc.).

Further, the operation of the processor in each of the above embodiments may be performed not only by one processor but also by a plurality of processors existing at physically separated positions in cooperation with each other. Further, the order of each operation of the processor is not limited to the order described in each of the above embodiments, and may be changed as appropriate.

The concentration output device according to the embodiment has been described above by way of example. The embodiment may be in the form of a program for causing a computer to execute the functions of each part included in the concentration output device. The embodiment may be in the form of a non-temporary storage medium that can be read by a computer that stores these programs.

In addition, the configuration of the concentration output device described in the above embodiment is an example, and may be changed depending on the situation within a range that does not deviate from the gist.

Further, the processing flow of the program described in the above embodiment is also an example, and even if unnecessary steps are deleted, new steps are added, or the processing order is changed within a range that does not deviate from the purpose. Good.

Further, in the above-described embodiment, the case where the processing according to the embodiment is realized by the software configuration by using the computer by executing the program has been described, but the present invention is not limited to this. The embodiment may be realized by, for example, a hardware configuration or a combination of a hardware configuration and a software configuration.

10 Concentration output device 11 Control unit 11A CPU
11B ROM
11C RAM
11D I / O
12 Storage unit 12A Concentration output program 13 Display unit 14 Operation unit 15 Communication unit 20 Acquisition unit 21 Calculation unit 22 Analysis unit 23 Output unit 24 Display control unit 30 Light source 31 Suspension 32 Standard sample 33 Receiver 34 Detector 40 Concentration measurement apparatus

Claims (12)

Equipped with a processor
The processor
Obtain the light intensity obtained by irradiating a suspension containing a solid component and a colored liquid component with light.
The color information of the suspension is acquired from the photographed image of the suspension, and the color information of the suspension is obtained.
Utilizing the relationship between the predetermined concentration of the solid component and the color information of the suspension, the concentration of the solid component obtained from the acquired light intensity and the color information of the suspension are used to obtain the information. A concentration output device that outputs the concentration of the colored liquid component. The suspension further comprises an uncolored liquid component.
The concentration output device according to claim 1, wherein the processor outputs the concentration of the uncolored liquid component from the concentration of the solid component and the concentration of the colored liquid component. The concentration output device according to claim 2, wherein the relationship is a relationship between the concentration of the colored liquid component and the color information of the suspension, which is defined for a plurality of concentrations of the solid component. The relationship is expressed as an approximate expression or a look-up table that defines the relationship between the concentration of the colored liquid component and the color information of the suspension, which is defined for a plurality of concentrations of the solid component. Item 3. The concentration output device according to Item 3. The relationship has an initial value of color information for the suspension.
The processor determines that the concentration of the colored liquid component is abnormal when the difference between the initial value and the value indicated by the color information of the suspension is equal to or greater than a predetermined range. The concentration output device according to claim 3 or 4. The density output device according to any one of claims 1 to 5, wherein the color information is information expressed as brightness or brightness of a specific color. The density output device according to claim 6, wherein the specific color is a color having a complementary color relationship with the color of the suspension. The colored liquid component is an oil component and
The concentration output device according to any one of claims 2 to 5, wherein the uncolored liquid component is a solvent component. The concentration output device according to claim 8, wherein the processor controls to display the solid concentration which is the concentration of the solid component, the oil concentration which is the concentration of the oil component, and the solvent concentration which is the concentration of the solvent component. The processor uses the difference between the solid concentration value and the solid concentration reference value, the difference between the oil concentration value and the oil concentration reference value, and the solvent concentration value and the solvent concentration reference value. The concentration output device according to claim 9, wherein when at least one of the differences between the two and the above is greater than or equal to a predetermined range, control is performed to display alarm information indicating that the concentration of the suspension is abnormal. The concentration output device according to any one of claims 1 to 10.
A light source that irradiates the suspension with light,
A light receiving unit that detects the light intensity of the light applied to the suspension, and
A detector that photographs the suspension and
Concentration measuring device equipped with. Obtain the light intensity obtained by irradiating a suspension containing a solid component and a colored liquid component with light.
The color information of the suspension is acquired from the photographed image of the suspension, and the color information of the suspension is obtained.
Utilizing the relationship between the predetermined concentration of the solid component and the color information of the suspension, the concentration of the solid component obtained from the acquired light intensity and the color information of the suspension are used to obtain the information. A concentration output program for causing a computer to output the concentration of the colored liquid component.

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