JPH11264770A - Temperature measuring device for coal pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the spontaneous fire by monitoring the temperature of the field heaping coal pile. SOLUTION: A reclaimer 2 is movable along a plural kinds of coal piles 6, 7, and the measurement reference bodies 19, 20 fixed adjacent to each other and respectively comprising the lumped coal to be the temperature measurement reference of same kind as the coal piles 6, 7 on the plate-shaped supporting members, are mounted at a lower part of this machine body 9. An infrared ray camera 1 is mounted at an upper part of the reclaimer 2 for photographing one coal pile and the measurement reference body in the same field. By the infrared ray camera 1, a first temperature T1 of the coal piles 6, 7 and a second temperature T2 of the coal same kind as the coal piles 6, 7 in the measurement reference bodies 19, 20 are detected. The temperature of the coal same kind as the coal piles 6, 7 of the measurement reference bodies 19, 20 is detected by a contact temperature meter to obtain a third temperature T3. An arithmetic means operates the difference ΔT (=T3-T2) between the second temperature T2 and the third temperature T3, and adds the difference ΔT to the first temperature T1 to obtain the surface temperature (=T1+ΔT) of the coal pile by correction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature correction device for an infrared camera, for example, in which the surface temperature of a pile of coal piled as a pile of coal is imaged by an infrared camera and the detected temperature is corrected.

[0002]

2. Description of the Related Art For example, in a coal-fired power plant, a pile of coal piled up has a risk of causing low-temperature oxidation and spontaneous ignition. About 1m from the surface of coal pile
In the range up to the depth, the coal comes into contact with air and oxidizes at a low temperature, and when the temperature reaches 80 to 90 ° C., the temperature rises sharply and spontaneously ignites. Therefore, it is necessary to constantly monitor the surface temperature of the coal pile. An infrared camera is used to detect the surface temperature of the coal pile.

When measuring the temperature of an object to be measured, such as a coal pile, which is a distant object to be measured, using an infrared camera, air existing between the infrared camera and the object to be measured,
Ambient temperature such as dust in air and air and dust,
Due to the weather or the like, the temperature becomes lower than the temperature measured in the vicinity of the measured object, and an error occurs. In an environment where the distance between the infrared camera and the object to be measured is long and the temperature is measured outdoors, the influence on the temperature measurement by the infrared camera varies. When performing temperature measurement in a place with a constant environment such as a laboratory, even if the distance between the infrared camera and the object to be measured is long, if the detection temperature of the infrared camera is corrected by a predetermined constant value, the temperature can be measured. An accurate temperature measurement of the object will be possible. However, when the infrared camera and the object to be measured are in the field and the measurement environment changes significantly, the effects on the temperature measurement with the infrared camera are various as described above,
Factors of the influence include, for example, the influence of infrared attenuation, the temperature characteristics of an infrared camera due to a change in outside air temperature,
There is a change in the surface temperature applied to the object to be measured due to wind.

The prior art of the present invention is disclosed in, for example,
1406. In this prior art, in order to detect the surface temperature of a linear fiber material such as acrylic or rayon, the fiber material is run above a temperature reference plate, and the temperature reference plate and the fiber material are imaged by an infrared camera. The temperature reference plate, the black body region and the region made of the same material and surface condition as the fiber material are arranged alternately in the longitudinal direction of the fiber material in the form of stripes, the temperature reference plate crosses the stripes, That is, the fiber material is heated by the heater so that a temperature gradient is formed in the running direction. In the image taken by the infrared camera, when the temperature of the fiber material and that of the black body region are the same, the infrared energy radiated by the fiber material and the infrared energy that is emitted by the black body region respectively match, so that the fiber material and the black body The boundary with the area disappears. The temperature of the fiber material can be known by knowing the temperature of the black body region where the boundary is no longer visible.

In this prior art, stripes are formed on the temperature reference plate. Therefore, in order to measure the temperature with high accuracy, the stripes must be thin and large, and it is difficult to improve the measurement accuracy. It is. Also, the temperature reference plate must have a temperature gradient over the entire range of the temperature of the fiber material, and it is difficult to always form such an accurate temperature gradient, and the heat transfer of the temperature reference plate is difficult. Therefore, the temperature may be uniformed.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a temperature correction device for an infrared camera capable of detecting a temperature with high accuracy.

[0007]

According to the present invention, there is provided a measuring reference member which is arranged close to an object to be measured and whose temperature is to be detected, and which is made of substantially the same material as the object to be measured. Are imaged in the same field of view, and the first temperature T1
And an infrared camera for detecting the second temperature T2 of the measurement reference member, respectively, and detecting the third temperature T3 of the measurement reference member in contact with the measurement reference member or in a non-contact manner from a position close to the measurement reference member. In response to the outputs of the thermometer, the infrared camera and the thermometer, a difference ΔT (= T3-T2) between the second temperature T2 and the third temperature T3 is calculated, and the first temperature T1 is calculated using the difference ΔT. And a calculating means for correcting the temperature of the infrared camera.

According to the present invention, the measurement reference member is made of the same material as the object to be measured, and may be, for example, the same material, and the surface of the measurement reference member is substantially the same as the surface of the object to be measured. Finished and configured. This measurement reference member is arranged close to the object to be measured, and thus the distance between the measurement reference member and the infrared camera is the same as or very close to the distance between the object to be measured and the infrared camera.
An object and a measurement reference member are imaged within the same field of view using an infrared camera, and a first temperature T1 of the measurement object and a second temperature T2 of the measurement reference member are detected.

The thermometer contacts the measurement reference member and detects the third temperature T3 of the measurement reference member. The thermometer that comes into contact with the measurement reference member as described above may have a configuration using, for example, a thermocouple, or may be realized by a temperature-sensitive element whose electric resistance changes with temperature. Further, the thermometer may be configured to detect the temperature of the reference measurement member at a position closer to the measurement reference member than the infrared camera, for example, without touching the thermometer. Another infrared camera can be used. The calculating means calculates a difference ΔT between the second temperature T2 detected by the infrared camera of the measurement reference member and the third temperature T3 detected by the thermometer. This difference ΔT
To correct the first temperature T1 using, for example, the first temperature T1.
And the difference ΔT are obtained, and the sum is derived as an accurate temperature of the measured object. Therefore, even if the distance between the device under test and the infrared camera is long, various effects such as the effects of infrared attenuation, temperature characteristics of the infrared camera due to changes in the outside air temperature, and changes in the surface temperature of the device under test due to wind. This makes it possible to correct the error in the detection value of the infrared camera and measure the surface temperature of the object with high accuracy.

Further, according to the present invention, a plurality of types of temperature reference members are made of substantially the same material as each of the plurality of types of objects to be measured, and are arranged so as to be imaged in the field of view of the infrared camera. Selecting means for selecting and designating the type of material, and the first temperature T1 of the object to be measured among the outputs of the infrared camera in response to the output of the selecting means, and a measurement reference made of the selected and specified material. Processing means for deriving an output representing the second temperature T2 of the member and providing the calculation means as the output of the infrared camera is included.

According to the present invention, there are a plurality of types of objects to be measured whose temperature is to be measured, and the temperature reference member is made of substantially the same material as each type of the object to be measured. It is configured in almost the same state as. By selecting the type of the material of the object to be measured by the selecting means, the material is substantially the same as the material selected and designated by the selecting means, and is substantially the same, among the plurality of types of temperature reference members imaged by the infrared camera. Temperature T2 of the measurement reference member having the surface state of
Is detected. In the calculating means, the second temperature T2 of the temperature reference member having the type of material selected and designated by the selecting means
Δ from the third temperature T3 detected by the thermometer.
T is calculated, the first temperature T1 of the device under test detected by the infrared camera is corrected, and for example, T1 + ΔT is calculated and obtained.

Further, the present invention is provided in a loading / unloading device that moves along a coal pile arranged adjacent to each of a plurality of types and loads / unloads coal, and a loading / unloading device,
A measurement reference body in which coal serving as each type of temperature measurement reference is fixed adjacent to the support member, provided in the loading / unloading apparatus, and images the coal pile and the measurement reference body in the same field of view,
An infrared camera for detecting the first temperature T1 of the coal pile and the second temperature T2 of each coal serving as a temperature measurement reference, respectively, from a position in contact with each coal of the measurement reference body or near each of those coals A thermometer for detecting the third temperature T3 of each coal in a non-contact manner, a selecting means for selecting and specifying the type of coal in the coal pile, and a first temperature T1 of the coal pile in response to an output of the selecting means. Processing means for deriving a second temperature T2 of a selected type of coal by selecting a measurement reference body,
The second temperature T2 and the third temperature T3 are responsive to the output of the processing means.
And a calculating means for calculating a difference ΔT (= T3−T2) from the difference and correcting the first temperature T1 using the difference ΔT.

According to the present invention, a coal pile, which is a pile of coal piled up, is present for each of a plurality of types of coal. For example, types of coal include Bloomfield, Nicolunds, and Satsui. For example, a flat support member has a plurality of types of lump coal for each of these types,
Fixed to form a measurement reference body. The coal fixed to the support member corresponds to the aforementioned temperature reference member. The first temperature T1 of the coal pile is detected by the infrared camera, and the second temperature T2 of the coal on the measurement reference body having the type designated and selected by the selection means is obtained. The third temperature T3 of the coal having the type selected and specified by the selection unit is detected from the plurality of types of coal serving as the temperature measurement reference on the measurement reference body by the thermometer. Thus, the calculating means calculates the difference ΔT between the same types of coal, and corrects it by adding it to the first temperature T1. Thereby, the surface temperature of the coal in the coal pile can be detected with high accuracy. Therefore, accurately monitor the temperature of the coal mine,
It is possible to prevent spontaneous ignition of coal mines.

[0014]

FIG. 1 is a block diagram showing an electrical configuration of an embodiment of the present invention. Infrared camera 1
Is a vertical axis 5 on the upper part 3 of the reclaimer 2
(See FIG. 2 to be described later).

FIG. 2 is a sectional view showing a state in which coal is carried in / out of coal piles 6 and 7 which are coal piles by the reclaimer 2, and FIG. 3 is a sectional view of the reclaimer 2 shown in FIG.
FIG. 3 is a simplified plan view showing the coal piles 6 and 7. The reclaimer 2 has a body 9 that can travel linearly along a rail 8 arranged on the ground. On both right and left sides of the rail 8, coal piles 6, 7 are formed.
These coal piles 6 and 7 have different types of coal for each pile. These coal types may be, for example, Bloomfield, Nicolunds, Satsui and the like.
The fuselage 9 is provided with bucket conveyors 11 and 12 that can be angularly displaced around a horizontal axis extending along the rail 8, and transfers coal from a belt conveyor 13 provided along the rail 8 to coal piles 6 and 7. It is carried in and piled up, or the coal from these coal piles 6 and 7 is carried out to the belt conveyor 13 and carried out.

The infrared camera 1 shown in FIG.
And thereby the inclined surface 1 of the coal pile 7 on one side
5 and the upper part 16 can be imaged in one field of view. The infrared camera 1 is angularly displaced 180 degrees around the vertical axis 5 by the camera platform 4, so that the inclined surface 17 and the top 18 of the coal pile 6 on the other side can be imaged in one visual field.

A measurement reference body 19 is fixed to one side of the field of view 14 below the body 9 of the reclaimer 2. With the infrared camera 1, together with the coal pile 7, the measurement reference body 19 can be imaged in the same field of view 14. A measurement reference body 20 is also attached to the fuselage 9 in the same manner as the measurement reference body 19 corresponding to the coal pile 6 on the other side.

FIG. 4 is a perspective view of the measurement reference body 19, and FIG. 5 is a sectional view of the measurement reference body 19. Measurement reference body 19
Is formed on one surface of the rigid plate-like support member 21 such as a veneer plate facing the infrared camera 1 via an adhesive 22 such as mortar or cement, for example, and a lump of coal 23-serving as a plurality of types of temperature measurement references. 26 are fixed adjacent to each other in each of a plurality (four in this embodiment) of regions 27 to 30 which are vertically and horizontally adjacent. For example, a large number of massive coals 23 are fixed closely adjacent to the area 27. The same applies to other types of coal 24, 25, 26.

A contact thermometer 31 is provided for each of the regions 27 to 30.
To 34 are provided in contact with the respective coals 23 to 26. With these thermometers 31 to 34, the surface temperatures of the coals 23 to 26 can be accurately detected. Region 27 is
For example, the width × length may be 50 cm × 50 cm.
The measurement reference body 19 is made detachable from the lower part of the body 9 of the reclaimer 2, whereby the measurement reference body having the same type of coal as the type of coal in the coal pile 7 whose temperature is to be measured is exchanged. It may be used.
Another metric body 20 is also the metric body 1 described above.
9 is configured in the same manner.

FIG. 6 is a simplified block diagram showing the configuration of the infrared camera 1. The light in the field of view 14 is indicated by reference numeral 3
As shown by 6, the light enters, is reflected by the galvanometer mirror 37, is further reflected by the rotary reflecting mirror 38, and forms an image on the two-dimensional photoreceptor 41 by the condenser lens 39.

FIG. 7 is a front view of the two-dimensional photoreceptor 41. The two-dimensional photoreceptor 41 has, for example, 25
Six pixels are arranged, 100 pixels are arranged in the vertical Y direction, and light receiving elements are arranged in a matrix. Each light receiving element derives an electric signal having an output level corresponding to the infrared light receiving intensity. In the horizontal X direction, light is horizontally scanned by rotation of a rotary reflecting mirror 38 which is a polygon mirror.
The trajectory of the horizontally scanned light is indicated by reference numeral 42. Each scanning line 42 is sequentially scanned in the vertical direction 43 by the galvanometer mirror 37. The rotary reflecting mirror 38 has a rotation axis 44 perpendicular to the horizontal scanning line 42, has a plurality of (for example, six) plane mirrors parallel to the rotation axis 44, and is rotated at a high speed by a motor. An image 19a of the measurement reference body 19 is formed on the imaging surface of the two-dimensional photoreceptor 41, and images 23a to 26a for each of the coals 23 to 26 are obtained. Further, the surface of the coal pile 7 is imaged in the remaining area of the two-dimensional photoreceptor 41.

Referring again to FIG. 1, the input means 47 inputs the type of coal in the coal piles 6 and 7 whose surface temperature is to be detected, and provides the same to the processing circuit 48. Processing circuit 48
Is realized by a microcomputer or the like, and stores the image received by the two-dimensional photoreceptor 41 of the infrared camera 1 in the memory 49 and stores the detected temperatures of the thermometers 31 to 34 and the output of the input means 47 in the memory 49. To calculate. Further, the processing head 48 is used by the processing circuit 48.
Is controlled.

The processing circuit 48 is connected to a programmable controller 50, which controls the operation of the reclaimer 2. Further, the processing circuit 48 is connected to the data processing device 51, and outputs the operation state of the reclaimer 2 and indicates each signal input to the processing circuit 48 for the temperature correction operation of the infrared camera 1 and the corrected temperature. A signal or the like is derived. The processing circuit 48 and the like are provided in the electric room 5 of the reclaimer 2.
2 is provided. The data processing device 51 is provided in the management room 53. The management room 53 is provided at a location away from the reclaimer 2.

The operation of the processing circuit 48 will be described with reference to FIG. In step a1, the camera platform 4 is controlled, and the infrared camera 1 images a desired coal pile 6, 7 in the next step a2. In step a3, the first temperature T1 at each coordinate position of the slope 15 and the top 16 of the coal pile 7 is detected based on the output of the infrared camera 1. In step a4, the input means 47 inputs the type of coal in the coal pile 7. In step a5, the second temperature T2 of the image 23a of the selected and specified coal in the image 19a of FIG. 7 corresponding to the type of coal input by the input means 47 is detected. The type of coal of the coal pile 7 serving as the temperature measurement reference and the type of coal of the coal pile 7 imaged by the infrared camera 1 are the same, and the surface state of the coal 23 serving as the temperature measurement reference is the surface state of the coal of the coal pile 7. Is the same as

In step a6, the third temperature T3 detected by the thermometer 31 of the type of coal 23 selected and designated by the input means 47 is called. The output image of the infrared camera 1, the outputs of the thermometers 31 to 34 and the output of the input means 47 are stored in the memory 49.

In step a7, the temperature difference ΔT is calculated by the equation (1). ΔT = T3−T2 (1) In step a8, the correction calculation of the first temperature T1 is performed by Expression 2. T4 = T1 + ΔT (2) The detected temperature T1 thus obtained by the infrared camera 1
Is a highly accurate measurement value T4 corrected by the difference ΔT.
Is obtained.

In another embodiment of the present invention, instead of the contact-type thermometers 31 to 34, a configuration for detecting each temperature of the coals 23 to 26 serving as a temperature measurement reference near the measurement reference bodies 19 to 20 is provided. For example, another infrared camera or the like may be provided. The thermometer for detecting the third temperature T3 in this manner has higher accuracy than the infrared camera
Any configuration that detects 3 to 26 may be used. Measurement reference body 19
-20 may have a configuration in which substantially the same single type of coal corresponding to the coal piles 6 and 7 is fixed to the support member, and when the type of coal differs for each of the coal piles 6 and 7,
Metric reference bodies having substantially the same type of coal may be used interchangeably.

[0028]

According to the first aspect of the present invention, by using an infrared camera, the temperature of a remote object to be measured can be controlled independently of the influence of disturbance, for example, by the effect of attenuation of infrared light in the air.
Irrespective of the temperature characteristics of the infrared camera due to the change of the outside air temperature and the change of the surface temperature given to the measured object by the wind
It will be possible to measure with high accuracy. Further, according to the present invention, the configuration is simpler than the prior art described above,
In addition, the temperature of the object to be measured can be measured with high accuracy as described above. Further, according to the present invention, even in an environment where a thermometer cannot be directly installed on an object to be measured, the temperature of the object to be measured can be measured with high accuracy.

According to the second aspect of the present invention, when the object to be measured is composed of a plurality of types of materials, by providing a temperature reference member for each type, the temperature of the object to be measured can be set for each type. Measurement can be performed with high accuracy.

According to the third aspect of the present invention, for example, the loading / unloading device can be moved along a coal pile which is a pile of coal piled up in a pile, and such loading / unloading device can be used, for example, for removing bulk materials. It may be a reclaimer, etc.
As the unloading device moves along the coal pile,
The temperature of the coal pile for each type can be measured with high accuracy by imaging the measurement reference body and the coal pile provided at the lower part of the loading / unloading device in the same field of view using an infrared camera. . The measurement reference body is provided at the loading / unloading device, for example, at a lower portion of the loading / unloading device, so that the coal serving as the temperature measurement reference can be arranged close to the coal pile. Therefore, the accuracy of measuring the temperature of the coal pile can be improved.
Therefore, for example, the temperature of a pile of coal piled up can be monitored to prevent spontaneous ignition of the coal pile.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which coal is carried in / out of coal piles 6 and 7 which are coal piles by a reclaimer 2;

FIG. 3 is a simplified plan view showing the reclaimer 2 and the coal piles 6, 7 shown in FIG.

FIG. 4 is a perspective view of a measurement reference body 19;

FIG. 5 is a sectional view of a measurement reference body 19;

FIG. 6 is a simplified block diagram showing a configuration of the infrared camera 1.

FIG. 7 is a front view of a two-dimensional photoreceptor 41.

8 is a diagram for explaining the operation of the processing circuit 48. FIG.

[Description of Signs] 1 Infrared camera 2 Reclaimer 4 Head 5 Vertical axis 6,7 Coal pile 8 Rail 9 Airframe 13 Belt conveyor 14 Field of view 18 Top 19,20 Measurement reference body 19a Image 21 Plate support member 22 Adhesive 23- 26 Coal 31-34 Thermometer 37 Galvanometer mirror 38 Rotating reflector 39 Condensing lens 41 Two-dimensional photoreceptor 42 Horizontal scanning line 43 Vertical direction 44 Rotation axis 47 Input means 48 Processing circuit 49 Memory

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[Procedure amendment]

[Submission date] March 29, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Temperature measurement device for coal pile

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring the temperature of a coal pile, which measures the surface temperature of a pile of coal piles, which are piled coal piles, with an infrared camera and corrects the detected temperature.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

When measuring the temperature of a coal pile using an infrared camera, the temperature of the air, dust in the air, the ambient temperature of air and dust, the weather, and the like are present between the infrared camera and the coal pile. However, as compared with the temperature measured near the coal pile, the temperature becomes lower and an error occurs.
In the environment where the distance between the infrared camera and the coal pile is long and the temperature is measured outdoors, the influence on the temperature measurement by the infrared camera varies. When performing temperature measurement in a constant environment such as a laboratory, even if the distance between the infrared camera and the coal pile is long, the temperature detected by the infrared camera
Correction of a predetermined constant value would allow accurate measurement of the coal pile temperature. However, when the infrared camera and the coal pile exist in the field and the measurement environment changes greatly, the influence on the temperature measurement by the infrared camera is various as described above. These include the effects of attenuation, temperature characteristics of the infrared camera due to changes in the outside air temperature, and changes in the surface temperature of the coal pile caused by wind.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a coal pile temperature measuring device capable of detecting a coal pile temperature with high accuracy.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

SUMMARY OF THE INVENTION The present invention relates to a loading / unloading apparatus 2 for moving along a plurality of coal piles arranged adjacent to each other for loading / unloading coal, and a loading / unloading apparatus. 2, a measurement reference body 19 in which coal 23 to 26 serving as a temperature measurement reference for each type is fixed adjacent to one surface of the plate-shaped support member 21 and a loading / unloading device 2. , Coal pile and measurement reference body 19 in the same field of view 1
4 and an infrared camera 1 for detecting a first temperature T1 of the coal pile and a second temperature T2 of each coal serving as a temperature measurement reference, respectively, and a distance between the measurement reference body 19 and the infrared camera 1 Is the same as or very similar to the distance between the coal pile and the infrared camera 1, and is the temperature at which the third temperature T3 of each of the coals 23 to 26 is detected by contacting each of the coals 23 to 26 of the measurement reference body 19, respectively. A total of 31 to 34, a selecting means 47 for selecting and specifying one of the types of coal in the coal pile, and responding to each output of the infrared camera 1 and the selecting means 47, and within one screen obtained in the same field of view. Based on the image of the coal pile and the image 19a of the measurement reference body 19,
A first temperature T1 for each coordinate position of the image of the coal pile and a second temperature T2 of the image 23a of the coal 23 to 26 of the type selected and specified by the selection unit 47 of the measurement reference body 19 are derived. In response to the output of the processing means 48, the thermometers 31 to 34 and the processing means 48, the second temperature T 2 and the coals 23 to of the measurement reference body 19 selected by the selection means 47.
26 from the third temperature T3 (= T3-
T2), and calculating means for correcting the first temperature T1 using the difference ΔT.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Deleted

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Deleted

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Deleted

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Deleted

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Deleted

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

According to the present invention, a coal pile, which is a pile of coal piled up, is present for each of a plurality of types of coal. For example, types of coal include Bloomfield, Nicolunds, and Satsui. For example, a flat support member has a plurality of types of lump coal for each of these types,
Fixed to form a measurement reference body. The coal fixed to the support member corresponds to a temperature reference member. The first temperature T1 of the coal pile is detected by the infrared camera, and the second temperature T2 of the coal on the measurement reference body having the type designated and selected by the selection means is obtained. The third temperature T3 of the coal having the type selected and specified by the selection unit is detected from the plurality of types of coal serving as the temperature measurement reference on the measurement reference body by the thermometer. As a result, the calculating means calculates the difference ΔT between the same type of coal,
It is corrected by adding it to the temperature T1. Thereby, the surface temperature of the coal in the coal pile can be detected with high accuracy. Therefore, it is possible to accurately monitor the temperature of the coal mine and prevent spontaneous ignition of the coal mine. The measurement reference member is made of the same material as each of the plurality of types of coal piles, and the measurement reference member is disposed close to the coal pile, and thus, the distance between the measurement reference member and the infrared camera is:
The distance between the coal pile and the infrared camera is the same or very similar. Using an infrared camera, the coal pile and the measurement reference member are imaged within the same field of view, and the first temperature T1 of the coal pile and the second temperature T2 of the measurement reference member are detected. The thermometer contacts the measurement reference member and detects the third temperature T3 of the measurement reference member. The thermometer that comes into contact with the measurement reference member as described above may have a configuration using, for example, a thermocouple, or may be realized by a temperature-sensitive element whose electric resistance changes with temperature. The calculating means calculates a difference ΔT between the second temperature T2 detected by the infrared camera of the measurement reference member and the third temperature T3 detected by the thermometer. The first temperature T1 is corrected using the difference ΔT, for example, a sum of the first temperature T1 and the difference ΔT is obtained, and the sum is derived as an accurate temperature of the coal pile. Therefore, even if the distance between the coal pile and the infrared camera is long, various effects such as the influence of infrared attenuation, the temperature characteristics of the infrared camera due to the change of the outside air temperature, the change of the surface temperature on the coal pile due to the wind, etc. By correcting the error of the detection value of the camera, the surface temperature of the coal pile can be measured with high accuracy.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

A contact thermometer 31 is provided for each of the regions 27 to 30.
To 34 are provided in contact with the respective coals 23 to 26. With these thermometers 31 to 34, the surface temperatures of the coals 23 to 26 can be accurately detected. Region 27 is
For example, the width × length may be 50 cm × 50 cm.
Another metric body 20 is also the metric body 1 described above.
9 is configured in the same manner.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

Referring again to FIG. 1, one of the coal types of coal piles 6, 7 whose surface temperature is to be detected is inputted by input means 47 and given to processing circuit 48. The processing circuit 48 is realized by a microcomputer or the like,
The image received by the two-dimensional photoreceptor 41 of the infrared camera 1 is stored in the memory 49, and the thermometers 31 to 3 are stored.
The detected temperature of No. 4 and the output of the input means 47 are stored in the memory 49 for calculation. Further, the camera platform 4 is controlled by the processing circuit 48.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Deleted

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Deleted

[Procedure amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Deleted

[Procedure amendment 18]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

[0030]

According to the first aspect of the present invention, for example, the loading / unloading device can be moved along a coal pile, which is a pile of coal piled up in a pile.
For example, a bulky reclaimer or the like may be used. While the loading / unloading device is moving along the coal pile, the measurement reference body and the coal pile provided at the lower portion of the loading / unloading device are moved by an infrared camera. By imaging within the same field of view, the temperature of the coal pile for each type can be measured with high accuracy. The measurement reference body is provided at the loading / unloading device, for example, at a lower portion of the loading / unloading device, so that the coal serving as the temperature measurement reference can be arranged close to the coal pile. Therefore, the accuracy of measuring the temperature of the coal pile can be improved. Therefore, for example, the temperature of a pile of coal piled up can be monitored to prevent spontaneous ignition of the coal pile. Further, according to the present invention, using an infrared camera, the temperature of the coal pile, regardless of the influence of disturbance,
For example, regardless of the effects of the attenuation of infrared rays in the air, the temperature characteristics of infrared cameras due to changes in outside air temperature, and changes in the surface temperature of coal piles caused by wind. It will be possible to measure with high accuracy. Further, according to the present invention, the configuration is simpler than that of the above-described prior art, and the temperature of the coal pile can be measured with high accuracy as described above. Further, according to the present invention, even in an environment where a thermometer cannot be directly installed on a coal pile, the temperature of the coal pile can be measured with high accuracy.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Haruo Kamura 3-1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe City, Hyogo Prefecture Inside the Kobe Plant of Kawasaki Heavy Industries, Ltd. (72) Inventor Minoru Yoshitomi Higashi Kawasaki, Chuo-ku, Kobe City, Hyogo 3-1-1 Cho-cho Kawasaki Heavy Industries, Ltd. Kobe Plant

Claims (3)

[Claims] 1. A measurement reference member, which is arranged close to an object to be measured and whose temperature is to be detected, and is made of substantially the same material as the object to be measured, and images the object to be measured and the measurement reference member in the same field of view. An infrared camera for detecting the first temperature T1 of the object to be measured and the second temperature T2 of the measurement reference member, respectively, in contact with the measurement reference member or in a non-contact manner from a position close to the measurement reference member. A thermometer for detecting a third temperature T3 of the reference member, and a second temperature T2 in response to outputs of the infrared camera and the thermometer.
ΔT (= T3−T2) between the temperature and the third temperature T3 is calculated,
And a calculating means for correcting the first temperature T1 using the difference ΔT. 2. The temperature reference member is composed of substantially the same material as each of the plurality of types of DUTs, and is arranged in a plurality of types so as to be imaged in the field of view of the infrared camera. Selecting means for selecting and specifying the type, and responding to the output of the selecting means, of the output of the infrared camera,
A processing unit that derives an output representing the first temperature T1 of the device under test and the second temperature T2 of the measurement reference member made of the material selected and designated, and supplies the output to the calculation unit as the output of the infrared camera The temperature correction device for an infrared camera according to claim 1, wherein: 3. A loading / unloading system which moves along coal piles arranged adjacent to each other for each of a plurality of types and loads / unloads coal.
A measuring reference body provided in the carry-out / loading / unloading device, wherein the coal serving as the temperature measurement reference for each type is fixed adjacent to the supporting member; and a coal pile provided in the carry-in / load-out device, The body and the body are imaged in the same field of view, the first temperature T1 of the coal pile,
An infrared camera for detecting the second temperature T2 of each coal serving as a temperature measurement reference, and a third contact of each coal in contact with each coal of the measurement reference body or in a non-contact manner from a position close to each coal. A thermometer for detecting the temperature T3, selecting means for selecting and specifying the type of coal in the coal pile, and a first temperature T1 of the coal pile in response to the output of the selecting means.
And the second type of coal of the type specified by selecting the reference body
Processing means for deriving the temperature T2; and a second temperature T2 and a third temperature T3 in response to the output of the processing means.
And a calculating means for calculating a difference ΔT (= T3−T2) with respect to the first temperature T1 using the difference ΔT.