JP5560179B2 - Method for measuring temperature inside stored coal, method for preventing spontaneous ignition of stored coal, and temperature measuring system inside stored coal - Google Patents

Description

  The present invention relates to a method for measuring temperature inside stored coal, a method for preventing spontaneous ignition of stored coal, and a system for measuring temperature inside stored coal.

High-grade coal (anthracite and bituminous coal) is widely used all over the world, but with the increase in global energy demand, demand for high-grade coal is beginning to tighten. For this reason, the use of subbituminous coal, which has a higher moisture content than low-grade coal and has a low calorific value, is beginning to increase.
However, sub-bituminous coal tends to generate heat spontaneously when dried, and there is a high risk of spontaneous ignition, so it is necessary to take measures to prevent spontaneous ignition. On the other hand, natural heat generation inhibitors have been developed, but the cost is high. For this reason, it is known that the temperature of the stored coal is monitored as the cheapest method for preventing spontaneous ignition of stored coal stored outdoors, and the heat generation part is cut off or discharged.

Specifically, as a method for measuring the temperature of stored coal, a method of directly measuring the temperature by inserting a thermocouple into the stored coal is known (see Patent Document 1).
Also known is a method for detecting a portion of the stored coal that has become hot by transmitting radio waves to the stored coal and capturing radio waves that change due to moisture distribution (see Patent Document 2).
Furthermore, a technique for monitoring temperature without directly touching stored coal with infrared rays is known (see Patent Document 3).
In addition, a technique using RFID (Radio Frequency Identification) that includes a temperature sensor for stored coal and wirelessly communicates the temperature measured by radio waves is also known (see Patent Document 4). Specifically, the tag is embedded horizontally and vertically at a predetermined height in the stored coal, and the leader of the portal crane is moved in coordinates to detect the position where the stored coal generates heat.

JP 2009-68954 A JP-A-8-67315 JP-A-8-285893 East German Patent No. 156449

However, in the technique described in Patent Document 1, in order to search for a spontaneous heat generation site, it is necessary to insert thermocouples one by one, which makes the work complicated and labor intensive.
Further, since the temperature is measured by inserting a thermocouple into the stored coal, the measurement range is usually limited to about several meters (for example, 2 m) from the stored coal surface layer. For this reason, there is a problem that the internal temperature cannot be measured in the case of stored coal bulked with a height exceeding 10 m.
Further, in the technique described in Patent Document 2, the moisture content varies greatly depending on the type of coal. Therefore, the method of capturing the spontaneously heat generating part by the amount of water cannot measure the exact temperature of the spontaneously generating part. Furthermore, when heat generation proceeds from the inside of the stored coal, there is a problem that it becomes difficult to accurately observe the state of the central portion as the stored coal becomes larger due to radio wave permeability.
Furthermore, in the technique described in Patent Document 3, it is possible to monitor the entire surface layer of the stored coal, but like the thermocouple, it is difficult to measure the temperature inside the stored coal.
Similarly, in the technique described in Patent Document 4, it is necessary to embed a tag at a position where radio waves reach the surface layer of stored coal that can be read by a reader. For this reason, it is difficult to detect the temperature inside the stored coal, which is difficult to transmit radio waves. On the other hand, when the radio wave intensity is increased to increase radio wave transmission, there is a problem that power consumption increases, temperature detection cannot be performed for a long time, and communication failure due to radio wave interference with external devices may occur. Can be mentioned.

In the above-mentioned conventional method, it is difficult to detect the internal temperature of the stored coal that is particularly wide and highly stacked, and the internal temperature is estimated from the surface temperature. In this way, if the inside of the stored coal spontaneously generates heat, it is not possible to fully identify the part that seems to be generating heat. Become.
Since the natural heat generating portion cannot be specified, the entire stored coal is cut or stirred, or the entire surface of the stored coal is discharged, resulting in increased waste.
In addition, when water is discharged, it is difficult to confirm that the natural heat generating portion inside the stored coal has been cooled, and thus water must be discharged excessively.
In general, the spontaneous heating of stored coal proceeds from the inside. Therefore, in order to efficiently take measures against spontaneous ignition, not only the surface layer of stored coal but also the technology to quickly and accurately identify the spontaneous heating site inside the stored coal is anxious. Yes.

  An object of the present invention is to provide a method for measuring the temperature inside stored coal that can accurately measure the temperature inside the stored coal stacked in bulk, a method for efficiently preventing spontaneous ignition of the stored coal, and a temperature measuring system inside the stored coal. It is to be.

The method for measuring the temperature inside the storage coal according to the present invention is a measurement method inside the storage coal that measures the temperature inside the bulk storage coal, and includes a power source, a temperature sensor, and temperature information measured by the temperature sensor. It can be transmitted by radio waves with a frequency of 1 GHz or less together with its own tag identification information, and when it receives other tag identification information and temperature information different from its own tag identification information, it can be transmitted together with its own tag identification information and temperature information by the radio waves. Embedded in a storage coal using a temperature detector equipped with an RFID tag and a receiver for receiving the tag identification information and the temperature information, and embedded in the storage coal The tag identification information of each RFID tag and the embedded position are associated with each other so that tag embedded information of one data structure is generated and recorded in plural. An input process for generating a source, the tag identification information and temperature information received by the receiver, and tag embedding information of the database are collated, and the position and temperature at which each RFID tag is embedded are associated with each other, in carrying out a measurement step of informing the temperature at the position where the RFID tag is embedded from the output means, in the embedding step, when the bulk state stacking multiple layers in layers the storage coal at a predetermined height A placing step in which the temperature detector is placed at a predetermined interval from a reference position on the upper surface of the layered storage coal stacked for one layer; and the temperature per 10,000 tons of the stored coal on the upper surface of the layered storage coal. A stacking process in which one layer of the stored coal is stacked at a rate of 25 or more detectors is repeated, and the input process is placed at a predetermined interval in the embedding process. And generating said tag embedded information associating the tag identification information and the embedded position of the temperature detectors.
The method for measuring the temperature inside the stored coal according to the present invention is a method for measuring the temperature inside the stored coal that has been stacked, and includes a power source, a temperature sensor, and the temperature measured by the temperature sensor. Information can be transmitted together with its own tag identification information by radio waves having a frequency of 1 GHz or less, and when other tag identification information and temperature information different from its own tag identification information are received, it is transmitted together with its own tag identification information and temperature information by said radio waves. An embedding step of embedding a plurality of the temperature detectors in stored coal using a temperature detector having a transmittable RFID tag and a receiver for receiving the tag identification information and the temperature information; and in the stored coal The tag identification information of each RFID tag embedded in the tag is associated with the embedded position, and tag embedded information of one data structure is generated and recorded in plural. An input process for generating a database, the tag identification information and temperature information received by the receiver, and tag embedding information in the database are collated, and the position and temperature at which each RFID tag is embedded are correlated and output. And a measuring step of notifying the temperature at the position where the RFID tag is embedded from the means, and is provided above the storage area where the stored coal is bulked and provided movably, and the stored coal is stored. A conveyor for conveying to the region, a conveyor moving means for moving the leading edge position of the conveyor, a position detecting means for detecting the leading edge position of the conveyor, and a conveyor for detecting the amount of the stored coal conveyed by the conveyor The temperature detection means that is transported together with the stored coal to be transported disposed at the front end position of the amount detecting means and the conveyor And a tag carry-out detector that reads the tag identification information when passing through the tip position of the conveyor, and the input step detects the carry amount detected by the carry amount detector and the position detector Based on the position of the tip of the conveyor, the height detection step of sequentially calculating the bulk height of the stored coal with respect to the horizontal plane of the storage area, and when the tag identification information is read by the tag carry-out detector, the position detection Based on the tip position of the conveyor detected by the means, the embedded position of the temperature detector corresponding to the tag identification information is recognized as a plane coordinate and associated with the tag identification information, and when the tag identification information is read The bulk height calculated in the height calculation step is set as the embedded position in the height direction of the temperature detector corresponding to the tag identification information. And recognizing and associating it with the tag identification information.

In the present invention, a plurality of temperature detectors including temperature sensors and RFID tags are embedded in stored coal. Then, tag embedding information of one data structure is generated by associating the tag identification information and the embedding position of each embedded RFID tag, and a database in which a plurality of such tag embedding information is recorded is constructed. The embedded RFID tag of the temperature detector transmits its own tag identification information and temperature information, and when receiving other tag identification information and temperature information different from its own tag identification information, its own tag identification information and temperature Communicate with information. That is, tag identification information and temperature information are transmitted and received between RFID tags. The tag identification information and temperature information communicated between the RFID tags are received by the receiver, collated with the tag embedding information in the database, and the temperature at the position where the RFID tag is embedded is associated and notified.
As a result, even when the RFID tag is buried deep inside the stored coal and radio waves cannot be transmitted to the outside, tag identification information and temperature information are sequentially transmitted to adjacent RFID tags and can be received by an external receiver. Therefore, even with the temperature inside the stored coal, it is possible to reliably and accurately measure without increasing the radio wave intensity of the RFID tag.
And in this invention, when storing coal in a state where a plurality of layers are piled up in a layered manner at a predetermined height, temperature detectors are placed on the upper surface of the layered coal that has been stacked by one layer at a predetermined interval from the reference position. To do. By stacking one layer of stored coal on the upper surface of this layered storage coal, and repeatedly placing a temperature detector on the upper surface of this second layered layered coal, it is placed in a predetermined position in the bulk storage coal. A temperature detector is embedded. In this way, when bulking, the conventional work process of stacking layered storage coal sequentially, compacting using heavy machinery etc., for the purpose of suppressing spontaneous ignition by suppressing the inflow of air into the stored coal It is only necessary to carry out the work of placing the temperature detector inside. For this reason, the temperature inside the stored coal can be measured stably and efficiently for a long period of time only by performing a simple operation of placing the temperature detector in the middle of the conventional operation process.
Moreover, in this invention, storage coal and a temperature detector are conveyed from the conveyor provided above the storage area to the storage area. Based on the front end position of the conveyor detected by the position detection means and the transport amount of the stored coal transported by the conveyor, the bulk height of the stored coal at each position on the horizontal plane of the storage area is sequentially calculated. And if tag identification information is read by the tag carry-out detector arrange | positioned in the front-end | tip position of a conveyor, it will recognize that the temperature detector passed through the front-end | tip position of the conveyor and was thrown into the storage area. When the tag identification information is read, the position of the conveyor tip is detected by the position detection means, and based on the detected position, the position of the horizontal plane at the embedded position of the temperature detector placed in the storage area is recognized and read. Associate with the tag identification information. Furthermore, the bulk height calculated in the height calculation process when the tag identification information is read is recognized as the embedded position in the height direction of the temperature detector at the detected horizontal plane position, and is associated with the tag identification information, Generate information. For this reason, tag embedding information can be automatically generated without performing an operation of embedding a predetermined position of stored coal stored by an operator or an input operation for associating an embedded position with tag identification information. Work for measuring the internal temperature becomes easier.

In this invention, it is preferable that the said embedding process embeds the said temperature detector on the conditions whose space | interval of the said adjacent temperature detector is 10 m or less.
As a result, it is possible to accurately measure the portion of the stored coal that generates heat, and to set the radio wave of the RFID tag to a strength with relatively low power consumption and no external radio interference. For this reason, it is possible to measure the temperature inside the stored coal stably and efficiently for a long period of time with high accuracy.

In the present invention, it is preferable that the embedding step embeds the temperature detector at a rate of 25 or more per 10,000 tons of stored coal.
As a result, the temperature detectors are arranged at intervals equal to or narrower than the ratio of about 10 m intervals in the vertical and horizontal directions on the horizontal plane and about 5 m intervals in the vertical direction. For this reason, while being able to measure the heat-generating part in the stored coal with high accuracy, it is possible to set the radio wave of the RFID tag to a strength that consumes relatively little power and does not cause radio interference with the outside. Therefore, it is possible to measure the temperature inside the stored coal stably for a long period of time with high accuracy.

In the present invention, it is preferable that the embedding step embeds the temperature detector at a rate of 1000 or less per 60,000 tons of stored coal.
As a result, the temperature detectors are arranged at intervals equal to or wider than the ratio of about 5 m intervals in the vertical and horizontal directions on the horizontal plane and about 3 m intervals in the vertical direction. For this reason, even if it arranges more narrowly, the accuracy of the temperature inside stored coal does not improve so much, the amount of the temperature detector to be used increases, and it is possible to prevent inconveniences such as an increase in measurement cost, The temperature inside the stored coal can be measured efficiently.

The method for preventing spontaneous combustion of stored coal according to the present invention is a method in which when the temperature inside the stored coal measured by the method for measuring the temperature inside the stored coal of the present invention recognizes a portion where the temperature is a certain level or more, It is preferable to notify to the peripheral part including at least the part of the coal to urge the implementation of at least one of water injection, crushing, and stirring.
In this invention, since the natural heat generation site | part inside stored coal is confirmed and water is poured into that location, it cuts, and it stirs, a natural heat generation site can be cooled before it spontaneously ignites. For this reason, spontaneous combustion can be prevented beforehand. In addition, since the spontaneous heating portion is selectively cooled, spontaneous ignition can be efficiently prevented.

The temperature measurement system inside the storage coal according to the present invention is a temperature measurement system inside the storage coal that measures the temperature inside the bulk storage coal, and includes a power source, a temperature sensor, and temperature information measured by the temperature sensor. Can be transmitted together with its own tag identification information by radio waves having a frequency of 1 GHz or less, and when other tag identification information and temperature information different from its own tag identification information are received, it is transmitted together with its own tag identification information and temperature information by the aforementioned radio waves. A temperature detector having a possible RFID tag, a receiver for receiving the tag identification information and the temperature information, and tag identification information and a buried position of each RFID tag embedded in the stored coal A database in which a plurality of tag embedding information of one data structure is recorded, and the tag identification information received by the receiver. And the temperature information and the tag embedment information in the database, a calculation means for performing a calculation for associating the position where each RFID tag is embedded and the temperature, and the RFID tag calculated by the calculation means is embedded. anda output means for informing the temperature at the location, said database, at the time of bulk the storage coal in a state of stacking a plurality of layers in layers in a predetermined height, the upper surface of one layer stacked layered storage coal The temperature detectors are placed at predetermined intervals from a reference position, and the stored coal is stacked on the upper surface of the layered stored coal by one layer or more at a rate of 25 or more temperature detectors per 10,000 tons of stored coal. The temperature detector is embedded by being repeated, and the tag identification information of each RFID tag of the embedded temperature detector is associated with the embedded position 1 Characterized by a plurality of tags embedded information of the data structure of the recording.
The temperature measurement system inside the storage coal of the present invention is a temperature measurement system inside the storage coal that measures the temperature inside the bulk storage coal, and is measured by a power source, a temperature sensor, and the temperature sensor. When the temperature information can be transmitted together with its own tag identification information by a radio wave having a frequency of 1 GHz or less and other tag identification information and temperature information different from its own tag identification information are received, the radio wave is transmitted together with its own tag identification information and temperature information. A temperature detector including an RFID tag that can be transmitted by the receiver, a receiver that receives the tag identification information and the temperature information, and tag identification information and a buried position of each of the RFID tags embedded in the stored coal. A database that records a plurality of tag embedding information of one associated data structure, and the tag identification received by the receiver Information and the temperature information are compared with tag embedding information in the database, and a calculation means for calculating the correlation between the position where each RFID tag is embedded and the temperature, and the RFID tag calculated by the calculation means is embedded. An output means for informing the temperature at the position where the storage coal is located; a conveyor which is movably provided above the storage area where the stored coal is bulked; and a tip which conveys the stored coal to the storage area; A conveyor moving means for moving the position, a position detecting means for detecting the tip position of the conveyor, a transport amount detecting means for detecting the amount of the stored coal transported by the conveyor, and a tip position of the conveyor And when the temperature detector transported with the transported stored coal passes the tip position of the conveyor, A tag carry-out detector that reads the identification information, and the computing means is based on the carry amount detected by the carry amount detector and the tip position of the conveyor detected by the position detector. The tag identification is performed based on the front end position of the conveyor detected by the position detecting means when the bulk identification height of the stored coal relative to the horizontal plane of the storage area is sequentially calculated and the tag identification information is read by the tag carry-out detector. Recognizing the embedded position of the temperature detector corresponding to the information as a plane coordinate and associating it with the tag identification information, the calculated bulk height when reading the tag identification information is the temperature corresponding to the tag identification information. Recognizing it as a buried position in the height direction of the detector and generating the tag buried information in association with the tag identification information, It is stored in the database.

In the present invention, a plurality of temperature detectors including temperature sensors and RFID tags are embedded in stored coal. Then, tag embedding information of one data structure is generated by associating the tag identification information and the embedding position of each embedded RFID tag, and a database in which a plurality of such tag embedding information is recorded is constructed. In this state, the embedded RFID tag of the temperature detector transmits its own tag identification information and temperature information and receives its own tag identification information and temperature information different from its own tag identification information. It is sent together with identification information and temperature information. That is, tag identification information and temperature information are transmitted and received between RFID tags. Then, the tag identification information and temperature information communicated between the RFID tags are received by the receiver, the calculation means checks the tag embedded information in the database and associates the temperature and the position where the RFID tag is embedded, and the output means The temperature at the position where the RFID tag is embedded is notified.
As a result, even when the RFID tag is buried deep inside the stored coal and radio waves cannot be transmitted to the outside, tag identification information and temperature information are sequentially transmitted to adjacent RFID tags and can be received by an external receiver. Therefore, even with the temperature inside the stored coal, it is possible to reliably and accurately measure without increasing the radio wave intensity of the RFID tag.

The conceptual diagram which shows schematic structure of 1st Embodiment of the temperature measurement system inside stored coal in this invention. The perspective view which abbreviate | omitted one part which shows the temperature detector which comprises a temperature measurement system same as the above. The block diagram which describes schematic structure of the computer in a temperature measurement system same as the above. The conceptual diagram which shows the data structure of the buried position database in a temperature measurement system same as the above. Explanatory drawing explaining the embedding position of the temperature detector in a temperature measuring system same as the above. Explanatory drawing explaining the embedding position of the temperature detector in a temperature measuring system same as the above. The conceptual diagram which shows schematic structure of 2nd Embodiment of the temperature measurement system inside stored coal in this invention.

[First Embodiment]
A first embodiment of the present invention will be described.
A first embodiment of the present invention will be described with reference to FIGS.

[Configuration of temperature measurement system]
In FIG. 1, A is a temperature measurement system which measures the temperature inside the coal pile 1 which is stored coal. The temperature measurement system A is embedded in the coal pile 1 and measures the temperature of the surrounding coal pile 1 and transmits a radio wave 2A, and receives the radio wave 2A transmitted from the temperature detector 2. A receiver 3 having a receiving antenna 31 and a computer 4 for calculating a signal output from the receiver that has received the radio wave 2A are provided.
Here, as the coal pile 1, what is piled up in the coal storage place S etc. which are storage areas in order to store coal, ie, what is piled up, is raised. In addition, the present invention can be applied to bulk containers of coal unloading tankers, large-capacity dome-type coal storage systems such as power plants, or coal aggregates loaded in storage silos.

As shown in FIG. 2, the temperature detector 2 includes a container 21, a power supply 22 accommodated in the container 21, and an RFID tag 23 that operates by supplying power from the power supply 22.
As the container 21, any container having high strength and having heat resistance and waterproofness can be used.
As the power source 22, various power sources such as a dry battery and a storage battery can be used.
The RFID tag 23 is an active type connected to the power supply 22 via the power supply line 24. The RFID tag 23 has a temperature sensor 23A and an antenna 23B. The RFID tag 23 transmits temperature information related to the temperature measured by the temperature sensor 23A and unique tag identification information on a radio wave 2A of 1 GHz or less. This is because if the frequency of the radio wave 2A to be transmitted exceeds 1 GHz, it is strongly influenced by the coal pile 1 and it may be difficult to receive the radio wave 2A outside. That is, the RFID tag 23 employs a low frequency band of 1 GHz or less that is less affected (attenuated) by the carbon material and moisture.

In addition, the RFID tag 23 is preferably set so as to periodically transmit the radio wave 2A when the RFID tag 23 reaches a predetermined temperature from the viewpoint of troublesome measurement at all times and suppression of power consumption of the RFID tag 23.
At this time, when the inside of the coal pile 1 reaches a predetermined temperature, a threshold value is recorded in the RFID tag 23 in order to take measures such as crushing a spontaneously heated portion or water discharge as a prevention of spontaneous ignition. This threshold value may be set to, for example, about 60 ° C., which is a temperature before moisture attached to coal starts to evaporate due to natural heat generation.
Further, the RFID tag 23 is configured to perform so-called inter-tag communication. That is, when the RFID tag receives tag identification information and temperature information different from its own tag identification information, the RFID tag transmits the different tag identification information and temperature information together with its own tag identification information and temperature information. .

When the receiver 3 is connected to the computer 4 and receives the radio wave 2A transmitted from the RFID tag 23 of the temperature detector 2 embedded in the coal pile 1, the receiver 3 receives the tag identification information and temperature information of the received radio wave 2A. Output to.
A plurality of receivers 3 are arranged around the coal pile 1, mounted on a moving body such as a vehicle so that the receiver 3 can move around the coal pile 1, and radio waves transmitted from respective positions on the outer surface of the coal pile 1. If 2A can be received, the number and arrangement of the arrangements are set as appropriate.

For example, a personal computer or a PDA (Personal Digital Assistant) can be applied to the computer 4. As shown in FIG. 3, the computer 4 includes a display unit 41 as an output unit, a communication unit 42 that constitutes the output unit, a storage unit 43, and a calculation unit 44.
The display unit 41 is a display device such as a liquid crystal panel or an organic EL (Electro Luminescence) panel. The display unit 41 is connected to the calculation unit 44, displays various screens under the control of the calculation unit 44, and notifies the user of various types of information.
The communication unit 42 is connected to the calculation means 44, and transmits an e-mail that describes that the coal pile 1 has spontaneously generated heat to the set mobile terminal device of each worker under the control of the calculation means 44, Inform. That is, the worker's portable terminal device and the communication unit 42 constitute the output means of the present invention.

The storage means 43 stores various information and various programs developed on an OS (Operating System) that operates the computer 4. The storage means 43 has an embedded position database 43A which is a database as a storage area.
As shown in FIG. 4, the embedded position database 43A is constructed in a table structure that stores a plurality of tag embedded information 43A1. The tag embedding information 43A1 is constructed by associating tag identification information 23C, which is unique identification information of the RFID tag 23, and embedding position information 23E related to the embedding position of the RFID tag 23, in association with one data structure. FIG. 4 shows a state in which the temperature information 23D is also associated with one data structure for convenience of explanation.

Here, the burying position information 23E is information for specifying a position where the predetermined temperature detector 2 is buried in the coal pile 1.
For example, as shown in FIG. 5 and FIG. 6, the embedded position information 23 </ b> E has a horizontal position on the horizontal plane with respect to the reference position X on the horizontal plane on the numbered layered storage coal 1 </ b> A stacked at a predetermined height. Specify the number and the buried position in the vertical direction. The specified embedding position is set, for example, at intervals of 10 m or less in the horizontal direction, particularly at intervals of 5 m or more and 10 m or less, and at intervals of 5 m or less, preferably 3 m or more and 5 m or less in the height direction. That is, if the coal pile 1 is distributed in the coal pile 1 at a rate of 25 or more temperature detectors 2 per 10,000 tons and the coal pile 1 is less than 1000 temperature detectors 2 per 60,000 tons, Good. If it is arranged at a rate smaller than the lower limit value, the temperature inside the coal pile 1 may not be measured accurately. Further, it is necessary to increase the radio wave intensity for communication between the RFID tags 23, which may cause inconveniences such as an increase in power consumption and an external radio wave interference. Moreover, even if it arrange | positions more than an upper limit, it is because an embedment work becomes complicated and there exists a possibility that the number of the temperature detectors 2 to be used may increase and measurement costs may increase.

The temperature detectors 2 whose tag identification information 23C is known in advance are installed at a plurality of embedded positions under the above conditions. As will be described in detail later, tag embedding information 43A1 is generated by associating each embedding position information 23E with tag identification information 23C installed at each embedding position.
Note that the embedded position is not limited to this method, and any method that can specify the position can be used, for example, it can be expressed by latitude and longitude and altitude.

As shown in FIG. 3, the calculation means 44 constitutes an embedded location recognition means 44A and a temperature recognition means 44B as programs developed on the OS.
The embedment location recognizing means 44A inputs the embedment position information 23E of the embedment position in association with the tag identification information 23C of each embedment temperature detector 2 using an input device such as a keyboard or a mouse, for example, and tag embedment information 43A1. Is generated. Then, the embedded location recognizing means 44A sequentially stores the generated tag embedded information 43A1 in the embedded location database 43A, and constructs the embedded location database 43A.
The temperature recognizing means 44B collates the tag identification information 23C and temperature information 23D of the radio wave 2A received by the receiver 3 with the tag embedding information 43A1 in the embedding position database 43A. Then, as shown in FIG. 4, the temperature recognizing unit 44B associates the embedded position information 23E with the temperature information 23D. As a result, the temperature at the position where the temperature detector 2 of the predetermined tag identification information 23C is embedded is recognized.

[Temperature measurement in coal pile]
Next, the operation | movement which measures the temperature inside the coal pile 1 using the said temperature measurement system A is demonstrated.
(Installation of temperature detector)
When measuring the temperature, first, an embedding process is performed in which the temperature detector 2 is installed at a predetermined embedding position.
In this embedding process, as shown in FIGS. 5 and 6, a process of embedding the temperature detector 2 inside the coal pile 1 having a size of length 200 m × width 70 m × height 20 m is illustrated.
First, when the temperature detector 2 is embedded, the tag identification number of the RFID tag 23 of the temperature detector 2 is recognized. Moreover, the threshold value of the temperature for detecting the spontaneous heat generation of the coal pile 1 is set.
And coal is piled up in the coal storage place S of the coal pile 1 by predetermined height, and it compacts suitably with the heavy machinery 5 (refer FIG. 1) etc., and forms the 1st layered storage coal 1A. On the upper surface of the first layered layered coal 1A, the temperature detector 2 whose tag identification information 23C is known in advance is sequentially installed at a predetermined embedding position (placement step).
As described above, this burying position is a position that is 10 m inside from the outer peripheral edge of the upper surface of the layered coal 1 </ b> A, and is a position that is 10 m apart in the horizontal and vertical directions on the horizontal plane. At the time of this installation, for example, an operator may record the embedment position on the recording paper, such as the first circle in the first layer and the third triangle in the first layer for each tag identification information 23C.
Then, after the temperature detector 2 is installed at the set embedding position on the upper surface of the first layered storage coal 1A, the coal is again piled on the upper surface of the layered storage coal 1A and then compacted. 1A is formed (stacking process). Similarly to the first layered storage coal 1A, the temperature detector 2 is sequentially installed at the set embedding position on the upper surface of the second layered storage coal 1A.
These placing process and stacking process are repeated to form a coal pile 1 in which a plurality of layers are stacked while the temperature detector 2 is embedded as shown in FIG.

(Construction of buried position database)
After the burying step, the tag identification information 23C of the buried temperature detector 2 and the burying position are associated with each other to generate tag burying information 43A1, and an input step for constructing the burying position database 43A is performed.
That is, the tag identification information 23C recorded by the operator on the recording paper and the embedded position are input to the computer 4 by an input device such as a keyboard or a mouse, and the embedded position database 43A is constructed.
With the construction of the embedded position database 43A, preparation for measuring the temperature inside the coal pile 1 is completed, and the receiver 3 enters a state of waiting for reception of the radio wave 2A from the temperature detector 2.

(Temperature measurement)
After the input step, a measurement step for measuring the temperature inside the coal pile 1 is performed.
Specifically, for example, a mobile body on which the receiver 3 is mounted is moved around the coal pile 1 or a plurality of receivers 3 are arranged around the coal pile 1 to pass through the coal pile 1. And a standby state for receiving the radio wave 2A transmitted to the outside.
Then, when the temperature inside the coal pile 1 reaches a preset threshold temperature, the FRID tag 23 is recorded with tag identification information 23C and temperature information 23D indicating that the detected temperature has reached a predetermined temperature. Radio wave 2A is transmitted. Here, the transmitted radio wave 2 </ b> A is received by the RFID tag 23 of another adjacent temperature detector 2. Even in the other RFID tags 23 of the temperature detector 2, when the detected temperature has reached the threshold value of the predetermined temperature, the tag identification information 23C and the temperature of its own are detected together with the received tag identification information 23C and temperature information 23D. Information 23D is transmitted. On the other hand, when the RFID tag 23 of another temperature detector 2 recognizes that the detected temperature has not reached the predetermined temperature threshold, only the received tag identification information 23C and temperature information 23D are distributed.
In this way, the tag identification information 23C and the temperature information are sequentially communicated between the surrounding RFID tags 23, and finally the external receiver 3 receives the tag identification information 23C and the temperature information 23D.
Then, the tag identification information 23C and the temperature information 23D received by the receiver 3 are input to the computer 4. In the computer 4, the temperature recognition means 44B of the calculation means 44 collates the input tag identification information 23C and temperature information 23D with the tag embedment information 43A1 in the embedment position database 43A. Then, the temperature recognition unit 44B associates the embedded position information 23E with the temperature information 23D. Thereby, the temperature at the position where the temperature detector 2 of the predetermined tag identification information 23C is embedded is recognized.

(Notification process)
After this measurement step, the calculation means 44 controls the display unit 41, the communication unit 42, and the like, and performs a notification step of notifying the worker of spontaneous heat generation.
For example, the calculation means 44 controls the display unit 41 to display the embedded position corresponding to the embedded position of the tag identification information 23C of the embedded position shown in the image of the coal pile 1, for example, different from the other embedded positions. Displayed in the form, for example, with different colors, contrasts, blinking displays, etc., to inform the operator. Further, the calculation means 44 controls the communication unit 42 to perform processing for transmitting an e-mail to the effect that the predetermined embedded position is naturally heated to the e-mail address of the set portable terminal of the worker. Notify workers. In addition, for example, an alarm may be reproduced from a speaker as an output unit, or a rotating lamp as an output unit may be turned on.

Through this notification process, the worker implements measures to prevent spontaneous ignition.
As a measure for preventing this spontaneous ignition, water is directly injected into the identified spontaneously heated part in order to reduce the amount of water used and efficiently cool the spontaneously heated part. In addition, the stop timing of water injection should just stop water injection, when the computer 4 confirms and alert | reports that the temperature measured by the RFID tag 23 embed | buried in the said natural heat_generation | fever site | part has fallen to the predetermined temperature.
In addition to water injection, the spontaneous heat generation site may be cut or stirred. Even in this case, since the spontaneous heating portion can be accurately identified and the temperature change of the portion can be confirmed, the efficiency is dramatically improved as compared with the conventional method of crushing or stirring the entire coal pile 1. In the case of crushing or stirring, the work of embedding the temperature detector 2 is necessary again, so that a method of pouring water is preferable.

[Effects of First Embodiment]
As described above, in the first embodiment, even when the RFID tag 23 is buried deep inside the coal pile 1 and cannot transmit the radio wave 2 </ b> A to the outside, the tag is connected to the adjacent RFID tag 23 by communication between the RFID tags 23. The identification information 23C and the temperature information 23D are sequentially transmitted and can be received by the external receiver 3.
Therefore, the temperature inside the coal pile 1 can be measured accurately and reliably without increasing the radio wave intensity of the RFID tag 23.

And in the said 1st Embodiment, the space | interval of the adjacent temperature detector 2 is 10 m or less, especially 10 m or less in the vertical and horizontal directions in the horizontal plane, and 5 m or less in the vertical direction (coal pile 1 per 10,000 tons). The temperature detectors 2 are embedded at a ratio of 25 or more.
For this reason, while being able to measure the heat_generation | fever site | part inside the coal pile 1 with sufficient precision, the radio wave 2A of the RFID tag 23 can be set to the intensity | strength which does not produce the radio interference with the comparatively small power consumption. Therefore, the temperature inside the coal pile 1 can be measured stably and efficiently for a long period of time with high accuracy.
Furthermore, in the said 1st Embodiment, the coal pile 1 distributes and arrange | positions in the coal pile 1 in the ratio of the temperature detector 2 per 60,000 tons or less.
For this reason, the temperature detector 2 will be arrange | positioned by the space | interval equivalent to or wider than the ratio arrange | positioned by about 5 m space | interval in the vertical and horizontal direction in a horizontal surface, and about 3 m space | interval in the vertical direction. Even if the interval is narrower than the upper limit condition, the accuracy of the temperature inside the coal pile 1 to be measured does not improve so much, the amount of the temperature detector 2 to be used increases, and the measurement cost increases. There is a risk of inconvenience. Therefore, the temperature inside the coal pile 1 can be measured efficiently by dispersing and arranging at the ratio of the upper limit value.

Moreover, in the said 1st Embodiment, when coal pile 1 is piled up in the state piled up in multiple layers by the predetermined height dimension, on the upper surface of the layered storage coal 1A piled up by one layer, it is a predetermined interval from the reference position X. The temperature detector 2 is mounted. By repeating the stacking of another layer of coal on the upper surface of this layered coal 1A and placing the temperature detector 2 on the upper surface of this second layered layered coal 1A, the bulk piled coal pile 1 The temperature detector 2 is embedded at a predetermined position.
In this way, when bulking, in order to suppress air from flowing into the inside of the coal pile 1 and suppress spontaneous ignition, it is compacted using a heavy machine 5 or the like, and the layered storage coal 1A is sequentially stacked. It is only necessary to carry out the work of placing the temperature detector 2 during the work process. For this reason, the temperature inside the coal pile 1 can be measured stably for a long period of time and with high accuracy only by performing a simple work of placing the temperature detector 2 in the middle of the conventional work process.

And in the said 1st Embodiment, the natural heat-generation site | part inside a coal pile is confirmed accurately, water is poured into the location, it cuts, and it stirs, and cools a natural heat-generation site before spontaneous ignition. ing.
For this reason, spontaneous combustion can be prevented beforehand. Furthermore, since the spontaneous heating portion can be selectively cooled, spontaneous ignition can be efficiently prevented. In particular, by cooling the natural heat generating portion with water injection, the temperature detector 2 remains embedded, so that the temperature can be continuously measured and the workability is good.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a schematic diagram for explaining a schematic configuration of a temperature measurement system according to the second embodiment, particularly a method of embedding an RFID tag in coal.
The second embodiment has a configuration in which the RFID tag 23 is buried in the stored coal 1B, except that the bulk storage is performed in the container T as a storage area instead of the form in which the coal storage place S is stacked in the first embodiment. Is the same as in the first embodiment. In addition, about the structure same or similar to 1st Embodiment in 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

In FIG. 7, the computer 4 of the temperature measurement system A is connected to a control panel 7 that controls the driving of the conveyor 6 that unloads the stored coal 1B into the container T and constructs the coal pile 1 in the container T.
The conveyor 6 is located above the container T and is movably installed, and conveys the stored coal 1B into the container T. The conveyor 6 is connected to a control panel 7 and driven and controlled.
The conveyor 6 is provided with a conveyor moving means 61 for moving the tip position where the stored coal 1B of the conveyor 6 is introduced. The conveyor moving means 61 is connected to the control panel 7 and driven and controlled.
Moreover, the tag carrying-out detector 8 which reads the tag identification information 23C of the temperature detector 2 which was located with the front-end | tip of the conveyor 6 and was conveyed with the stored coal 1B and passed the front-end | tip is provided. The tag carry-out detector 8 is connected to the computer 4 and transmits the detected tag identification information 23C to the computer 4.
Here, as for the temperature detector 2 conveyed with the stored coal 1B by the conveyor 6, the coal pile 1 has 25 or more temperature detectors 2 per 10,000 tons, and the coal pile 1 has a temperature detector 2 of 1000 per 60,000 tons. What is necessary is just to throw in in the storage coal 1B to convey in the ratio of a piece or less.

The control panel 7 includes a conveyor drive control means 71 for controlling the drive of the conveyor 6 and the conveyor moving means 61, a position detection means 72 for detecting the tip position of the moved conveyor, and stored coal conveyed by the drive of the conveyor 6. And a carry amount detecting means 73 for detecting the carry amount of 1B.
For example, the position detection unit 72 generates the position information of the plane coordinates based on the movement distance in the horizontal direction and the vertical direction from the reference position on the horizontal plane with one corner of the bottom surface of the container T as the reference position X. The specification of the tip position of the conveyor 6 is not limited to this method, and for example, latitude and longitude may be used.
The transport amount detection means 73 calculates the transport amount based on, for example, the drive status of the conveyor 6 that is driven and controlled by the conveyor drive control means 71, or stores coal that is being transported using a load sensor provided on the conveyor 6. Various methods can be used, such as calculating the transport amount from the mass of 1B and the transport time.

The embedded location recognition means 44A in the computing means 44 of the computer 4 is based on the relationship between the transport amount detected by the transport amount detection means 73 of the control panel 7 and the tip position of the conveyor 6 during the transport period. The height dimension of the piled coal pile 1 with respect to the plane coordinates is sequentially calculated. The calculation of the height dimension uses, for example, a statistical value of the height dimension of the coal pile 1 that piles up on a cone when a predetermined amount of stored coal 1B is introduced from a predetermined height at a predetermined position. Can be illustrated.
Then, when acquiring the tag identification information 23 </ b> C transmitted from the tag carry-out detector 8, the embedded location recognizing unit 44 </ b> A reads the tip position of the conveyor 6 detected by the position detecting unit 72 of the control panel 7. The plane coordinates in the container T in the embedded position information 23E, which is the read tip position of the conveyor 6, are related to the tag identification information 23C. Furthermore, when the buried portion recognition means 44A acquires the tag identification information 23C transmitted from the tag carry-out detector 8, the height dimension of the coal pile 1 in the container T corresponding to the tip position of the conveyor 6 at the time of acquisition. , And the tag identification information 23C is associated with the height position in the embedded position information 23E, and the tag embedded information 43A1 in which the embedded position information 23E is associated with the tag identification information 23C is generated. Then, the generated tag embedding information 43A1 is sequentially stored in the embedding position database 43A, and the embedding position database 43A is constructed.

Then, in the state where the temperature detectors 2 are appropriately distributed in the coal pile 1 stacked in the container T, the radio wave 2A transmitted from the RFID tag 23 by the receiver 3 as in the first embodiment described above. Set to the reception standby state. When the receiver 3 receives the radio wave 2A, the computer 4 collates the tag identification information 23C of the radio wave 2A received by the receiver 3 with the embedded position database 43A, and collates the temperature information 23D recorded in the radio wave 2A. The heat generation part is recognized in association with the tag embedding information 43A1.
Then, the spontaneous heat generation site is notified by the display unit 41, the communication unit 42, or the like.
By this notification, a measure for preventing spontaneous ignition is quickly implemented.

[Effects of Second Embodiment]
In 2nd Embodiment, there can exist the same effect as 1st Embodiment.
Furthermore, in the said 2nd Embodiment, the position where the temperature detector 2 thrown in from the front-end | tip of the conveyor 6 is embed | buried automatically is specified from the front-end | tip position of the conveyor 6 and the conveyance amount of the stored coal 1B, and tag embed | buried The information 43A1 is generated and the embedded position database 43A is automatically constructed.
For this reason, the tag embedding information 43A1 can be automatically generated without performing the operation of embedding in a predetermined position of the coal pile 1 stored by the worker or the input operation for associating the embedding position with the tag identification information 23C. The operation for measuring the temperature inside the coal pile 1 can be made easier.
And in this invention, since the temperature inside the coal pile 1 piled up in the container T of 2nd Embodiment can also be measured, even when conveying with a coal ship etc., a measurement can be continued and a countermeasure against spontaneous ignition is taken appropriately. Therefore, efficient and stable conveyance can also be performed.

[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
Specifically, in the first embodiment, when a threshold value of a predetermined temperature is set by the RFID tag 23 and the temperature detected by the temperature sensor 23A has reached the threshold temperature, the detected temperature has reached the predetermined temperature. Although the structure which transmits the temperature information 23D of an effect was illustrated, it is not restricted to this structure. For example, the detected temperature is sequentially transmitted, or the RFID tag 23 is provided with a timer such as a timer in consideration of power consumption, and the temperature information 23D of the temperature detected every predetermined time is transmitted together with the tag identification information 23C. May be.
In addition, the display unit 41 is not limited to the notification by image display or the notification by e-mail. As a notification method, for example, the display unit 41 is simply displayed by numerically displaying the position and temperature. Either method can be applied. Furthermore, the configuration of the output means for notifying the temperature at the position where the RFID tag 23 is diffracted in the present invention is not limited to notifying the worker, but for example, information on the spontaneous heat generation part is given to the control device for controlling the watering device. For example, the water may be output and water may be injected from a naturally heated portion by a watering device.

And as an embedding position which embeds the temperature detector 2, it is not restricted to the dispersion | distribution arrangement | positioning by the space | interval and ratio which were mentioned above. For example, in order to weaken the radio wave intensity and reduce power consumption, the above-described embodiments can be implemented by embedding more temperature detectors 2 than in the above embodiments or by setting the radio wave intensity to be stronger by improving the performance of the RFID tag. You may embed less than a form.
In addition, the specific structure and procedure for carrying out the present invention may be changed to other configurations as long as the object of the present invention can be achieved.

  INDUSTRIAL APPLICABILITY The present invention can be used for temperature measurement of the temperature inside stored coal that stores coal in bulk, for example, in a thermal power generation business or a steel manufacturing business.

A ......... Temperature Measurement System S ......... Coal Storage Station as Storage Area T ......... Container as Storage Area X ......... Reference Position 1 ... Coal Pile as Storage Coal 1A ... Layered Storage Coal 1B …… Storage coal 2 ……… Temperature detector 2A …… Radio wave 3 ………… Receiver 6 ……… Conveyor 8 ……… Tag unloading detector 22 ……… Power supply 23 ……… RFID tag 23A …… Temperature sensor 23C …… Tag identification information 23D …… Temperature information 23E …… Embedded position information 41 ………… Display unit as output means 42 ………… Communication part constituting output means 43A …… Embedded position database 43A1 as tag Embedding information 44... Calculation means 61... Conveyor moving means 72... Position detection means 73.

Claims (8)

A measuring method for measuring the internal temperature of bulk storage coal,
The power supply, the temperature sensor, and other tag identification information and temperature information different from the own tag identification information that can be transmitted by radio waves having a frequency of 1 GHz or less together with the temperature identification information measured by the temperature sensor. Using a temperature detector provided with an RFID tag that can be transmitted by the radio wave together with its own tag identification information and temperature information, and a receiver that receives the tag identification information and the temperature information,
A burying step of burying a plurality of the temperature detectors in stored coal;
An input step of generating a database by creating a plurality of tag embedding information of one data structure by associating tag identification information and an embedding position of each RFID tag embedded in the stored coal,
The tag identification information and temperature information received by the receiver are collated with the tag embedding information in the database, the position where each RFID tag is embedded is associated with the temperature, and the RFID tag is embedded from the output means. in carrying out a measurement step for notifying the temperature, the in position,
In the burying step, when the stored coal is stacked in a state of being stacked in a plurality of layers at a predetermined height, the temperature detector is mounted at predetermined intervals from the reference position on the upper surface of the layered stored coal that has been stacked for one layer. A placing step, and a stacking step in which one layer of the stored coal is stacked at a ratio of 25 or more per 10,000 tons of the stored coal on the upper surface of the layered stored coal,
The method for measuring temperature inside stored coal , wherein the input step generates the tag embedment information in which the tag identification information of the temperature detector placed at a predetermined interval in the burying step and the embedment position are associated with each other. . A measuring method for measuring the internal temperature of bulk storage coal,
The power supply, the temperature sensor, and other tag identification information and temperature information different from the own tag identification information that can be transmitted by radio waves having a frequency of 1 GHz or less together with the temperature identification information measured by the temperature sensor. Using a temperature detector provided with an RFID tag that can be transmitted by the radio wave together with its own tag identification information and temperature information, and a receiver that receives the tag identification information and the temperature information,
A burying step of burying a plurality of the temperature detectors in stored coal;
An input step of generating a database by creating a plurality of tag embedding information of one data structure by associating tag identification information and an embedding position of each RFID tag embedded in the stored coal,
The tag identification information and temperature information received by the receiver are collated with the tag embedding information in the database, the position where each RFID tag is embedded is associated with the temperature, and the RFID tag is embedded from the output means. in carrying out a measurement step for notifying the temperature, the in position,
A conveyor that is movably provided above a storage area for bulking the stored coal, and that conveys the stored coal to the storage area; a conveyor moving means that moves a tip position of the conveyor; and the conveyor Position detecting means for detecting the tip position of the conveyor, transport amount detecting means for detecting the amount of the stored coal transported by the conveyor, and transported together with the stored coal transported at the tip position of the conveyor. A tag unloading detector that reads the tag identification information when the temperature detector passes through the tip position of the conveyor, and
The input step includes
A height calculation step of sequentially calculating the bulk height of the stored coal with respect to the horizontal plane of the storage area based on the conveyance amount detected by the conveyance amount detection unit and the tip position of the conveyor detected by the position detection unit. When,
When the tag identification information is read by the tag carry-out detector, the embedded position of the temperature detector corresponding to the tag identification information is recognized as a plane coordinate based on the tip position of the conveyor detected by the position detection means, and the Relating to the tag identification information and recognizing the bulk height calculated in the height calculation step when the tag identification information is read as the embedded position in the height direction of the temperature detector corresponding to the tag identification information And a buried position recognition step for associating with the tag identification information . In the method for measuring the temperature inside the stored coal according to claim 1 or 2 ,
In the embedding step, the temperature detector is embedded under the condition that an interval between adjacent temperature detectors is 10 m or less. In the temperature measuring method of the storage coal inside according to any one of claims 1 to 3,
In the embedding step, the temperature detector is embedded at a rate of 25 or more of the temperature detectors per 10,000 tons of the stored coal. In the method for measuring the temperature inside the stored coal according to claim 4 ,
In the embedding step, the temperature detector is embedded at a rate of 1000 or less per 60,000 tons of stored coal. When the temperature inside the stored coal measured by the temperature measuring method inside the stored coal according to any one of claims 1 to 5 recognizes a part showing a temperature of a certain level or more, the stacked coal A method for preventing spontaneous ignition of stored coal, comprising notifying at least one of water injection, crushing, and agitation operations in a peripheral portion including at least the portion of the stored coal. A storage coal internal temperature measuring system for measuring the temperature inside bulk storage coal,
The power supply, the temperature sensor, and other tag identification information and temperature information different from the own tag identification information that can be transmitted by radio waves having a frequency of 1 GHz or less together with the temperature identification information measured by the temperature sensor. A temperature detector having an RFID tag that can be transmitted by the radio wave together with its own tag identification information and temperature information upon reception;
A receiver for receiving the tag identification information and the temperature information;
A database that records a plurality of tag embedding information of one data structure in which tag identification information and embedding positions of each RFID tag embedded in the storage coal are associated;
Computation means for collating the tag identification information and the temperature information received by the receiver with the tag embedding information of the database, and performing an operation of associating the position where each RFID tag is embedded with the temperature,
Anda output means for notifying a temperature in the RFID tag operation buried position by the calculation means,
In the database, when the stored coal is stacked in a state of being stacked in a plurality of layers at a predetermined height, the temperature detector is placed on the upper surface of the layered coal that has been stacked by one layer at a predetermined interval from the reference position. The temperature detector is embedded on the upper surface of the layered storage coal by repeatedly stacking the storage coal for one layer at a rate of 25 or more per 10,000 tons of the stored coal, A system for measuring temperature inside stored coal, wherein a plurality of tag embedding information of one data structure in which tag identification information and embedding position of each RFID tag of the embedded temperature detector are associated is recorded . A storage coal internal temperature measuring system for measuring the temperature inside bulk storage coal,
The power supply, the temperature sensor, and other tag identification information and temperature information different from the own tag identification information that can be transmitted by radio waves having a frequency of 1 GHz or less together with the temperature identification information measured by the temperature sensor. A temperature detector having an RFID tag that can be transmitted by the radio wave together with its own tag identification information and temperature information upon reception;
A receiver for receiving the tag identification information and the temperature information;
A database that records a plurality of tag embedding information of one data structure in which tag identification information and embedding positions of each RFID tag embedded in the storage coal are associated;
Computation means for collating the tag identification information and the temperature information received by the receiver with the tag embedding information of the database, and performing an operation of associating the position where each RFID tag is embedded with the temperature,
Output means for notifying the temperature at the position where the RFID tag calculated by the calculating means is embedded;
A conveyor that is movably provided above the storage area for bulking the stored coal, and conveys the stored coal to the storage area;
Conveyor moving means for moving the tip position of the conveyer;
Position detection means for detecting the tip position of the conveyor;
A transport amount detecting means for detecting the amount of the stored coal transported by the conveyor;
A tag carry-out detector that reads the tag identification information when the temperature detector that is disposed at the front end position of the conveyor and is transported with the transported stored coal passes through the front end position of the conveyor ,
The computing means is
Based on the conveyance amount detected by the conveyance amount detection means and the tip position of the conveyor detected by the position detection means, sequentially calculating the bulk height of the stored coal relative to the horizontal plane of the storage area,
When the tag identification information is read by the tag carry-out detector, the embedded position of the temperature detector corresponding to the tag identification information is recognized as a plane coordinate based on the tip position of the conveyor detected by the position detection means, and the In addition to associating with the tag identification information, the calculated bulk height when the tag identification information is read is recognized as an embedded position in the height direction of the temperature detector corresponding to the tag identification information. A temperature measurement system inside stored coal , wherein the tag embedding information is generated in association with the information and stored in the database .

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