JP7036086B2 - Temperature monitoring device, area setting device, temperature monitoring method and area setting method - Google Patents

Description

The present invention relates to a temperature monitoring device, an area setting device, a temperature monitoring method, and an area setting method used for monitoring a temperature abnormality of a device that generates heat.

A temperature abnormality may occur in a device such as a control panel that has a heat source, causing an error in the operation of the device or failure of the device. By detecting a temperature abnormality in such a device at an early stage, it is possible to prevent an operation error or a device failure. Therefore, a thermal image including a heat source to be generated may be acquired and monitored.

Conventionally, there is a method of detecting an abnormality by dividing a thermal image into segments which are a plurality of compartments corresponding to a heat source and monitoring the temperature of each segment (see, for example, Patent Document 1). In the method described in Patent Document 1, an example in which the segments used for monitoring are set to a uniform rectangle is described.

Japanese Patent No. 6429526

However, if the segment is set to a uniform rectangle, it is possible that the segment contains multiple heat sources. Further, since the equipment to be monitored has various configurations, it is difficult to set the segment so that the number of heat sources to be monitored included in each segment is one. Further, when the heat source included in each segment is made into one, the number of segments formed increases, the number of segments not including the heat source increases, and the monitoring becomes complicated.

An object of the present invention is to provide a temperature monitoring device, a region setting device, a temperature monitoring method, and a region setting method that realize easy segment setting and monitoring.

The area setting device according to the present invention has an acquisition unit that acquires a temperature value detected by a temperature sensor as an image showing a temperature distribution divided into a plurality of cells in the row direction and the column direction, respectively, and a row direction from the image. The area including the search unit that searches for the cell that has the maximum temperature value in the column direction and the cell that has the maximum temperature value in the column direction and the cell that has the maximum temperature value searched by the search unit is monitored. A region corresponding to the heat source is set, and the region is divided into a monitoring region for the image acquired by the acquisition unit.

The temperature monitoring device, area setting device, temperature monitoring method, and area setting method according to the present invention can easily set and monitor segments.

It is a schematic diagram explaining the temperature monitoring system which concerns on 1st Embodiment. It is a block diagram explaining the structure of the temperature monitoring device and the area monitoring device which concerns on 1st Embodiment. It is an example of the image obtained by the temperature monitoring device of FIG. It is a figure explaining the expression method of each cell of the image which shows the temperature distribution. It is a graph of a temperature value showing an example of searching for a maximum cell in the row direction. It is a graph of a temperature value showing an example of searching for a maximum cell in the column direction. This is an example of specifying the position of the searched maximum cell from the image of 32 rows and 32 columns. This is an example of selecting a candidate region for each maximum cell of FIG. 6A. This is an example of setting a monitoring area for the maximum cell of FIG. 6A. This is another example of setting a monitoring area for a maximum cell searched from an image of 32 rows and 32 columns. This is an example of explaining how to set the monitoring area. Following FIG. 8A, this is an example of explaining a method of setting a monitoring area. It is a flowchart explaining the temperature monitoring method and the setting method of a region and a threshold value executed by a temperature monitoring system. It is a flowchart explaining the search process executed by the area setting apparatus. It is a flowchart explaining the search process executed by the area setting apparatus following FIG. 10A. It is a flowchart explaining the division processing method executed by the area setting apparatus. This is an example of explaining a method of setting a boundary in an image. Following FIG. 12A, it is an example to explain the setting of the boundary in the image. Following FIG. 12B, this is an example for explaining the setting of a boundary in an image. Following FIG. 12C, this is an example for explaining the setting of a boundary in an image. It is a flowchart explaining another division processing method executed by the area setting apparatus. It is a flowchart explaining the division processing method following FIG. 13A. It is a flowchart explaining the boundary setting process executed by the area setting apparatus. It is a flowchart explaining the boundary setting process executed by the area setting apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The temperature monitoring device according to the present invention monitors an abnormality in the temperature of a device such as a control panel having a heat source. At this time, the segment used for monitoring by the temperature monitoring device is set according to the device by the area setting device. As a result, in the temperature monitoring device according to the present invention, a segment corresponding to the device can be easily set, and when a temperature abnormality occurs in the heat source, the abnormality can be detected.

In the present disclosure, the "heat source" is, for example, an electronic component, an electric wiring, or an object that can generate heat by itself, and is a target of monitoring by a monitoring device.
In the present disclosure, the "equipment" is a device including a plurality of heat sources such as electronic components and wiring. For example, a control panel is an example of this device.
In the present disclosure, the "cell" refers to a square formed when an image is divided vertically and horizontally. This cell corresponds, for example, to a measured temperature value of 1.
In the present disclosure, the "segment" is a region formed by a plurality of cells, and this segment is a temperature monitoring region. In addition, in this disclosure, "segment" and "monitoring area" are synonymous.
In the present disclosure, "maximum" means the maximum within a predetermined range. For example, when comparing the temperature values corresponding to each cell in the scanning direction in a certain row, the maximum temperature value in a predetermined continuous cell is the "maximum value". Further, in the present disclosure, the cell corresponding to the temperature value that becomes the "maximum value" is referred to as a "maximum cell".

[Embodiment 1]
As shown in FIG. 1, in the temperature monitoring system 1 according to the first embodiment, the temperature monitoring device 10 and the area setting device 20 for setting the temperature monitoring area are configured to be connectable. Further, the temperature monitoring device 10 is connected to a sensor 30 that detects the temperature of the device 40 having a heat source to be monitored by the temperature. For example, as shown in FIG. 1, the temperature monitoring device 10 and the sensor 30 are installed in a housing such as a control panel 50 in which a device 40 having a heat source to be monitored by temperature is installed. For example, when the device 40 is installed in the main body 51 of the housing which is the control panel 50, the sensor 30 is installed in the door 52 so as to be able to detect the temperature of the device 40, for example, to face the device 40. Will be done.

The sensor 30 is, for example, an infrared temperature sensor, which detects the temperature of the device 40 and outputs the temperature to the temperature monitoring device 10. In addition to the infrared temperature sensor, a near-infrared camera having a sensitivity distribution up to near-infrared rays may be used as the sensor 30.

As shown in FIG. 2, the temperature monitoring device 10 is an information processing device including, for example, a control unit 11 such as a CPU, a storage unit 12 such as a RAM or a ROM, and a communication interface (I / F) 13. For example, by executing the temperature monitoring program P1 stored in the storage unit 12, the control unit 11 may execute the processing as the acquisition unit 111, the transmission / reception unit 112, and the monitoring unit 113 to realize the temperature monitoring of the device 40. can.

Further, as shown in FIG. 2, the area setting device 20 includes, for example, a control unit 21 such as a CPU, a storage unit 22 such as a RAM or a ROM, a communication I / F, an input unit 24, and an output unit 25. It is an information processing device equipped with. For example, by executing the area setting program P2 stored in the storage unit 22, the control unit 21 executes processing as the acquisition unit 211, the search unit 212, the division unit 213, and the setting unit 214, and the temperature monitoring device 10 determines the temperature. The area and threshold used for monitoring can be set.

《Temperature monitoring device》
The acquisition unit 111 acquires the temperature value detected by the sensor 30 as an image showing the temperature distribution divided into a plurality of cells in the row direction and the column direction, respectively. Further, the acquisition unit 111 stores the acquired image as temperature data 121 in the storage unit 12.

When the area setting device 20 is connected to the transmission / reception unit 112 and the monitoring area is set, the transmission / reception unit 112 reads the temperature data 121 from the storage unit 12 and transmits the temperature data 121 to the area setting device 20. Further, the transmission / reception unit 112 receives the area data 122 and the threshold value data 123 transmitted from the area setting device 20 and stores them in the storage unit 12.

In each monitoring area defined by the area data 122, the monitoring unit 113 has an abnormality in the heat source when the temperature specified from the image newly acquired by the acquisition unit 111 becomes larger than the threshold value set by the threshold value data 123. Is detected. Specifically, when the acquisition unit 111 acquires a new image, the monitoring unit 113 specifies a temperature value specified for each area set in the area data 122 of the storage unit 12 from the new image. , The specified temperature value is compared with the threshold value set in the threshold value data 123 of the storage unit 12 for each of the regions. Then, the monitoring unit 113 detects that the heat source in the monitoring region whose temperature value is larger than the threshold value is abnormal. Further, the monitoring unit 113 can notify the detection of abnormality by storing the monitoring result in the storage unit 12 as the monitoring result or transmitting the monitoring result to the outside via the communication I / F 13.

In this way, the temperature monitoring device 10 can execute temperature monitoring of the target device 40 by using the monitoring area and the threshold value set by the area setting device 20. Therefore, the temperature monitoring device 10 can realize flexible and highly accurate temperature monitoring.

<< Area setting device >>
The acquisition unit 211 obtains temperature data, which is an image showing a temperature distribution divided into a plurality of cells in the row direction and the column direction from the temperature monitoring device 10 at the timing of setting the area connected to the temperature monitoring device 10, for example. get. Further, the acquisition unit 211 stores the acquired temperature data 221 in the storage unit 22. Specifically, the temperature data 221 acquired by the acquisition unit 211 is the same as the temperature data 121 stored in the storage unit 12 of the temperature monitoring device 10.

FIG. 3 shows an example of an image formed by the temperature data 211 acquired by the acquisition unit 211. The image shown in FIG. 3 is an example of being divided into 32 cells in the row direction (x direction) and also divided into 32 cells in the column direction (y direction). Further, although not shown as an RGB image in FIG. 3, the acquisition unit 211 can acquire, for example, an RGB image in which different colors are associated with each other depending on the temperature. In the following description, if the cells are divided into 5 cells in the row direction and the column direction, the cells are the first row from the top and the first column from the left of the image, and each cell is a cell (1) as shown in FIG. , 1), cell (1,2), cell (1,3), ..., Cell (5,3), cell (5,4), cell (5,5).

From the image, the search unit 212 searches for a cell having a maximum temperature value in the row direction and a cell having a maximum temperature value in the column direction (hereinafter, also referred to as “maximum cell”). Specifically, the search unit 212 refers to the temperature data 221 stored in the storage unit 22 and searches for the maximum cell in each of the row direction and the column direction. Further, the search unit 212 stores the identified information of the searched maximum cell in the storage unit 22 as the maximum value data 222.

FIG. 5A is a graph of temperature values showing an example of searching for a maximum cell in the row direction. Specifically, it is an example of the search result of the 5th line, the 8th line, and the 30th line. For example, from the 5th row, it can be seen that the temperature value of the cell in the 20th column, specifically, the cell (5, 20) was searched for as the maximum. Further, from the 8th row, it can be seen that the cell (8, 3) and the cell (8, 19) are searched as the maximum cell. In the example of FIG. 5A, the maximum cell is not searched from the 30th row.

FIG. 5B is a graph of temperature values showing an example of searching for a maximum cell in the column direction. Specifically, it is an example of the search results in the third column, the eighth column, and the 19th column. For example, from the 19th column, it can be seen that the temperature value of the cell (3, 19) was searched for as the maximum. In the example of FIG. 5B, the maximum cell is not searched from the third column and the eighth column.

FIG. 6A is an example showing the position of the searched maximum cell in the image showing the temperature distribution of 32 rows and 32 columns. In FIG. 6A, the number of maximal cells and searched cells is 10 only in the row direction, the number of maximal cells and searched cells is 1 only in the column direction, and the maximum cells are searched in duplicate in the row direction and the column direction. This is an example in which the number of cells was 1. Specifically, the cells searched for maximal only in the row direction are (1,20), (2,19), (3,19), (4,19), (6,19), (7, 3), (8,3), (8,19), (9,19), (10,19), and the cell searched for maximal only in the column direction is (5,19), and the row direction. And the cells searched for the maximum in the column direction are (5, 20).

The division unit 213 sets a region including a cell having a maximum temperature value searched by the search unit 212 as a region corresponding to a heat source to be monitored, and sets this region for an image acquired by the acquisition unit 111. Divide as a monitoring area. Specifically, the division unit 213 reads the maximum value data 222 from the storage unit 22, and monitors the area including the cell outside the predetermined cell with reference to the cell having the maximum temperature value searched by the search unit 212. It is an area. Further, the division unit 213 stores the data for specifying the area obtained by the division as the area data 223 in the storage unit 22.

FIG. 6B shows an example in which a region including cells outside 3 cells is selected as a candidate region for a plurality of maximal cells searched in FIG. 6A. In FIG. 6B, the candidate regions selected for a plurality of maximal cells are shown by alternate long and short dash lines. When there are a plurality of maximal cells within 3 adjacent cells, the selected areas may overlap as shown in FIG. 6B. In this case, the final monitoring area is determined to include overlapping areas. Specifically, the union of the candidate regions selected in FIG. 6B can be set as the monitoring regions A11 and A12, as in the region of the broken line shown in FIG. 6C. In FIG. 6C, the areas including the cells outside 3 cells with respect to the maximum cell are set as monitoring areas A11 and A12, but the number of cells is not limited, and the cell size, cells and heat source to be monitored are not limited. It is preferable that the size can be freely set according to the ratio of the size to and the like. Specifically, these values can be freely set according to the input by the user via the input unit 24.

FIG. 7 is an example in which the monitoring areas A21 to A24 are the areas including cells that are close to each other by two cells with respect to the plurality of searched maximum cells. At this time, in the example shown in FIG. 7, the monitoring area A23 is set by including the cells adjacent to each other in the same area as well as the cells adjacent to each other in the diagonal direction. Further, as shown in FIG. 7, when the area including the maximum cell is set as the monitoring area A21 to A24, the outer area not including the maximum cell may also be set as one monitoring area A25. That is, the side of one monitoring area and the side of the other monitoring area may be in contact with each other.

Further, as shown in FIG. 8A, if the monitoring area is set by the area including the cells that are close to each other by two cells with respect to the maximum cell, the monitoring area may include a plurality of independent maximum cell groups. In such a case, there are a plurality of heat sources included in the monitoring area. Therefore, in order to prevent a plurality of heat sources included in the monitoring area, as shown in FIG. 8B, the monitoring area may be set by an area including a cell adjacent to one cell from each maximum cell. As a result, it is possible to prevent a plurality of maximum cell groups from being included in the monitoring area, and it is possible to monitor only the temperature of one heat source in the monitoring area.

The setting unit 214 sets a threshold value in the monitoring area obtained by the division unit 213. The setting unit 214 may input, for example, a value to be compared with the temperature value measured for each monitoring area from the input unit 24 as a threshold value, and store this as threshold data in the storage unit 22. Further, the setting unit 214 transmits this threshold data to the temperature monitoring device 10 and causes the setting unit 214 to set the threshold data 123 for temperature monitoring in the temperature monitoring device 10. Here, the setting unit 214 may set a different threshold value for each monitoring area.

In this way, in the area setting device 20, the monitoring area can be set according to the image showing the temperature distribution acquired as the temperature data 221, and the threshold value can be set for the monitoring area. Therefore, by setting the monitoring area and the threshold value according to the device 40, it is possible to realize flexible and highly accurate temperature monitoring for the temperature monitoring device 10.

<Temperature monitoring method and area / threshold setting method>
The temperature monitoring method in the temperature monitoring device 10 and the area and threshold setting method in the area setting device 20 will be described with reference to the flowcharts shown in FIGS. 9 to 11.

As shown in the flowchart shown in FIG. 9, in the temperature monitoring device 10, a series of processes related to temperature monitoring and area setting are started when the power of the device to be temperature monitored is turned on (S1).

First, the acquisition unit 111 acquires an image showing the temperature distribution (S2). The acquisition unit 111 stores the acquired image as temperature data 121 in the storage unit 12. Further, the temperature data 121 is also acquired by the acquisition unit 211, and is also stored in the storage unit 22 as the temperature data 221.

At the timing when the temperature rise is completed (YES in S3), the search unit 212 executes a search process for searching the maximum cell from the temperature data 221 acquired by the acquisition unit 211 (S4). Specifically, the search unit 212 executes the search process using the image acquired at the timing when the temperature of the device has settled down to a constant level after the power of the device is turned on.

In the search process, as shown in the flowchart of FIG. 10A, the search unit 212 first starts "search in the row direction". Specifically, the search unit 212 sets “1” as the value of “m” and “1” as the value of “n” (S401). Here, it is assumed that the value of "m" represents a row and the value of "n" represents a column.

Subsequently, the search unit 212 executes a search for the maximum value for each row (S402). Here, it is assumed that the line to be searched is the mth line. First, the search unit 212 determines whether or not the temperature value of the cell in the nth column of the mth row is the maximum among the (n + i) columns from the (ni) th column (S403). S404). Here, i can be set arbitrarily, but if i = 5, the search unit 212 compares the temperature value of the target cell with the temperature value of the adjacent 10 cells, and the temperature value thereof is compared with the temperature value of the adjacent cell. Determine if it is the highest among them. If the cell exists at the end of the image and the cell does not exist in the direction of the (n-5) column or the (n + 5) column, the search unit 212 is the most in the range of the existing cell. Determine if it is high or not.

When the maximum is in the (n-i) to (n + i) columns (YES in S404), the search unit 212 is in the (n + i) column to which the temperature values of the target cells are close to each other (n + i). ) It is determined whether or not the temperature is j ° C. or higher with respect to the minimum temperature value in the column (S405). Here, j can also be set arbitrarily, but if i = 5 and j = 5, the search unit 212 uses the minimum temperature value of 10 cells in which the temperature values of the target cells are close to each other. It is determined whether or not the temperature is 5 ° C. or higher with respect to the temperature value of.

When the temperature values of the target cells are j ° C. or higher with respect to the minimum value of the temperature values in the (n + i) columns that are close to each other (YES in S405), the search unit 212 uses the target cell. Is a maximum cell and is registered in the storage unit 22 as maximum value data 222 (S406).

After registering the maximum value data 222 in step S406, or when it is determined as "NO" in step S404 or S405, the search unit 212 increments n (S407) and repeats the processes of steps S404 to 407 (S. 407). S403). For example, when the image of the temperature distribution is divided into 32 in the column direction, the search unit 212 executes the processes of steps S404 to 406 32 times, and searches for the maximum cell for the m-th row.

When the search for the maximum cell for the m-th row is completed, the search unit 212 increments m (S408) and repeats the processes of steps S403 to S407 (S402). For example, when the image of the temperature distribution is divided into 32 in the row direction, the search unit 212 executes the processes of steps S402 to S407 32 times, and searches for the maximum cell for all the rows. When the maximum cell is searched for all the rows, the search unit 212 ends the "search in the row direction".

Subsequently, as shown in the flowchart of FIG. 10B, the search unit 212 starts the “search in the column direction”. Specifically, the search unit 212 sets “1” as the value of “m” and “1” as the value of “n” (S409). Again, it is assumed that the value of "m" represents a row and the value of "n" represents a column.

Subsequently, the search unit 212 executes a search for the maximum value for each column (S410). Here, it is assumed that the column to be searched is the nth column. Specifically, the search unit 212 determines whether or not the temperature value of the cell in the mth row of the nth column is the maximum in the (m + i) th row from the (mi) th row (S411). Judgment (S412). Here, i can be set arbitrarily, but if i = 5, the search unit 212 compares the temperature value of the target cell with the temperature value of the adjacent 10 cells, and the temperature value thereof is compared with the temperature value of the adjacent cell. Determine if it is the highest among them. If the cell is present at the edge of the image and the cell does not exist in the direction of the (m-5) th row or the (m + 5) th row, the search unit 212 is the most in the range of the existing cells. Determine if it is high or not.

When it is the largest among the rows (m + i) from the (mi) th row (YES in S412), the search unit 212 has the (m + i) th row to which the temperature values of the target cells are close to each other. ) It is determined whether or not the temperature is j ° C. or higher with respect to the minimum temperature value in the row (S413). Here, j can also be set arbitrarily, but if i = 5 and j = 5, the search unit 212 uses the minimum temperature value of 10 cells in which the temperature values of the target cells are close to each other. It is determined whether or not the temperature is 5 ° C. or higher with respect to the temperature value of.

When the temperature values of the target cells are j ° C. or higher with respect to the minimum value of the temperature values in the rows (m-i) to (m + i) that are close to each other (YES in S413), the search unit 212 uses the target cell. Is a maximum cell and is registered in the storage unit 22 as maximum value data 222 (S414).

After registering the maximum value data 222 in step S414, or when it is determined as "NO" in step S412 or S413, m is incremented (S415) and the processes of steps S412 to 415 are repeated (S411). For example, when the image of the temperature distribution is divided into 32 in the row direction, the processes of steps S412 to 414 are executed 32 times, and the search for the maximum cell is executed for the nth column.

When the search for the maximum cell for the nth column is completed, n is incremented (S416), and the processes of steps S411 to S415 are repeated (S410). For example, when the image of the temperature distribution is divided into 32 in the row direction, the processes of steps S410 to S415 are executed 32 times, and the search for the maximum cell is executed for all the rows. When the maximum cell is created for all rows, the search unit 212 ends the search in the column direction. Further, the search unit 212 finishes all the search processes and proceeds to the process of step S5 in the flowchart of FIG.

As shown in the flowchart of FIG. 9, the search process (S4) is followed by the division process (S5).
In the division process, as shown in the flowchart of FIG. 11, the division unit 213 sets a candidate area centered on the maximum cell for each maximum cell (S51). Specifically, the division unit 213 is a candidate region as described above using FIG. 6B for each maximum cell registered in the storage unit 22 as the maximum value data 222 in step S406 of FIG. 10A and step S414 of FIG. 10B. To set.

When the candidate area is set for all the maximum cells, the division unit 213 determines whether or not there is overlap in the area selected as the candidate area (S52). For example, as described above in FIG. 6B, when maximal cells are adjacent to each other, overlapping regions occur.

When there is an overlapping area (YES in S52), the division unit 213 sets a monitoring area by unioning the overlapping parts as shown in FIG. 6C (S53).
If there is no overlapping area (NO in S52), the division unit 213 sets the candidate area as the monitoring area (S54).
When such a division process is completed, the process proceeds to the process of step S6 in the flowchart of FIG.

As shown in the flowchart of FIG. 9, when the division process (S5) is completed, the setting unit 214 sets the threshold value (S6). For example, the setting unit 214 sets different threshold values for each monitoring area set in step S5. Further, the setting unit 214 transmits this threshold value to the temperature monitoring device 10, and is registered as the threshold value data 123 in the storage unit 12.

Subsequently, the monitoring unit 113 uses the threshold value set in step S6 to execute the temperature monitoring process for the newly acquired image (S7).

As described above, in the temperature monitoring device 10, a suitable monitoring area can be easily set according to the device to be monitored. Further, in the temperature monitoring device 10, it is possible to set a threshold value for monitoring for each monitoring area and monitor the temperature. This makes it possible to realize appropriate temperature monitoring according to the equipment.

[Embodiment 2]
The temperature monitoring system 1 according to the second embodiment has the above-described configuration with reference to FIG. 1, and the temperature monitoring device 10 and the area setting device 20 used in the temperature monitoring system 1 have described above with reference to FIG. It is a composition. The second embodiment differs in the method of setting the monitoring area in the division unit 213. Therefore, only the differences will be described with reference to FIGS. 1 and 2.

When there are a plurality of cells having a maximum temperature value in the same row direction or column direction in the search unit 212, the division unit 213 sets a monitoring area with the searched cells as a boundary. At this time, the search unit 212 sets the monitoring area according to the order shown below.

Start comparing temperature values for all cells in descending or ascending order for each row.
(Process 1) When there are a plurality of cells having a maximum temperature value, the division unit 213 sets a boundary between the plurality of searched cells. Here, if a plurality of cells are a series of adjacent cells, the dividing unit 213 does not set a boundary between the adjacent cells. Further, when the boundary has not been set up to the previous line, the dividing portion 213 extends the boundary above this boundary.

(Process 2) When there are no cells having a maximum temperature value in one row direction and the boundary is set in the row compared before, the division unit 213 is already set for the target row. Set the boundary at the position where the boundary is extended.

(Process 3) In the case where there are no cells having the maximum temperature value in one row direction for each row, the boundary is not set in the previously compared rows, and the last row, the division unit 213 Two cells with a close distance at which the temperature value is maximized are extracted between any of the different rows, and the boundary between the two cells with a close distance is set.

If there is no corresponding condition in the target line for (Process 1) to (Process 3), the division unit 213 proceeds to the next process without setting a boundary. That is, the target line does not set a boundary and proceeds to the next line. Further, when (Process 1) to (Process 3) are completed for all the rows, the process proceeds to (Process 4).

Start comparing temperature values for all cells in descending or ascending order for each column.
(Process 4) When there are a plurality of cells having a maximum temperature value, the division unit 213 sets a boundary between the plurality of searched cells. Again, if a plurality of cells are a series of adjacent cells, the search unit 212 does not set a boundary between the adjacent cells. Further, when the boundary is not set up to the previous column, the dividing portion 213 extends the boundary before this boundary.

(Process 5) When there are no cells having a maximum temperature value in one column direction and the boundary is set in the previously compared columns, the division unit 213 is already set for the target column. Set the boundary at the position where the boundary is extended.

(Process 6) In the case where there are no cells having the maximum temperature value in one row direction for each column, the boundary is not set in the previously compared columns, and the last column is used, the division unit 213 , Two cells with a close distance at which the temperature value is maximized are extracted between any of the different columns, and the boundary between the two cells with a close distance is set.

Regarding (Process 4) to (Process 6), if there is no corresponding condition in the target line, the division unit 213 proceeds to the next process without setting a boundary. That is, the target column does not set a boundary and proceeds to the next column. Further, for all the columns, when (Process 4) to (Process 6) are completed, the area divided by the boundary set in (Process 1) to (Process 6) is set as the monitoring area.

As shown in FIG. 12A, the division when the maximum cell is searched will be specifically described. First, in the row direction processing, a plurality of maximum cells do not exist in each row from the first row to the eighth row. Also, no boundaries have been set for the previously compared columns. Therefore, in the processing of the first line to the eighth line, the division unit 213 proceeds to the processing of the ninth line without setting the boundary.

In the ninth row (process 1), the cell (9,6) and the cell (9,29) are the maximum cells. Therefore, as shown in FIG. 12B, the division unit 213 is set with a boundary between the cells (9, 17) and the cells (9, 18) (“9th row / process 1 (1)” in FIG. 12B. ). Further, since the boundary is not set even in the 8th row of the dividing portion 213, the boundary is extended between the columns 17 and 18 even in the 1st to 8th rows (“9th row ・ ・ in FIG. 12B”. Process 1 (2) "). Here, the "between" of the two maximum cells for which the boundary is set may be the "center" of the two cells, but if the center of the two cells is another cell, the center thereof. The boundary can be between one cell and another cell on the right or left side.

After that, in the 10th row, the cell (10, 6) and the cell (10, 29) are the maximum cells. Therefore, the division unit 213 sets a boundary between the cell (10, 17) and the cell (10, 18) (“10th row / process 1” in FIG. 12B).

In the 11th row, a plurality of maxima of the cell (11,6), the cell (11,27), the cell (11,28), the cell (11,29), the cell (11,30), and the cell (11,31). There is a cell. As described above, when a plurality of maximal cells are continuous in the row direction, the search unit 212 does not divide the series of maximal cell groups between them, as described above. That is, this series of maximal cells should be considered as one heat source and collectively used as a monitoring area. Further, when a plurality of maximal cells are continuous in this way, the dividing portion 213 may set a boundary at the center of two distant maximal cells, or the center of the central maximal cell of one adjacent maximal cell group. The boundary may be set to, or the boundary set up to the previous line may be extended to set the boundary. The example shown in FIG. 12B is an example in which the boundary up to the 10th line is extended in the 11th line (“11th line / process 1” in FIG. 12B). Further, the example shown in FIG. 12B is also an example in which a boundary is set between the cell (11, 29) in the center of the cell (11, 27) and the center of the cell (11, 6).

In the twelfth row, there are no plurality of maximal cells. Therefore, the division portion 213 extends the boundary set in the 11th line. Similarly, in the 13th to 32nd rows, a plurality of cells do not exist. Therefore, the division unit 213 extends the boundary set in the processing up to that point (“12th to 32nd lines / process 2” in FIG. 12). As a result, the processing in the row direction is completed.

After the row direction processing, the column direction processing is executed. First, in the processing of the first column and the second column, since the maximum cell does not exist, the division unit 213 does not set the boundary. Further, also in the third to fifth columns, since only one maximal cell exists and a plurality of maximal cells do not exist, the division portion 213 does not set a boundary.

In the sixth column, there are a plurality of maximal cells, and these plurality of cells are adjacent to each other. Therefore, the division portion 213 does not set a boundary even in the sixth column. Similarly, in the 6th to 31st columns thereafter, there is no plurality of maximal cells, or even if there are a plurality of maximal cells, none of them is not a series of adjacent cells. Therefore, the division unit 213 does not set the maximum cell even in the 6th to 31st columns.

Since there are no plurality of maximal cells in the 32nd column, the division unit 213 sets a boundary between two maximal cells having a short distance. Specifically, as shown in FIG. 12C, the division unit 213 selects cells (8, 9) and cells (11, 27) as cells having a short distance, and sets a boundary between them (FIG. 12C). 12C "32nd line, process 6 (1)" broken line). Further, the division unit 213 selects a cell (26, 22) and a cell (13, 39), and sets a boundary between them (“32nd row / process 6 (2)” in FIG. 12C).

Since the boundary (broken line in FIG. 12C) set between the cells (8, 9) and the cells (11, 27) is set between a plurality of adjacent cells, the division portion 213 is subsequently set. This boundary is deleted in the process of. Therefore, the division unit 213 is finally divided into four monitoring areas A31 to A34 as shown in FIG. 12D. The boundary may be deleted (for example, the broken line in FIG. 12C) by a method in which the dividing portion 213 detects a boundary set between adjacent maximum cells and automatically deletes the boundary. Then, all the boundaries set in the output unit 25 of the display or the like may be presented, and the unnecessary boundaries may be input by the operator via the input unit 24.

Even if such a division method is used, in the area setting device 20, the monitoring area is set according to the image representing the temperature distribution acquired as the temperature data 221 and the threshold value is set for the monitoring area. Can be done. Therefore, by setting the monitoring area and the threshold value according to the device 40, it is possible to realize flexible and highly accurate temperature monitoring for the temperature monitoring device 10. Further, while the method of the first embodiment sets the monitoring target in detail for each heat source, the method of the second embodiment has a rough range including the entire device and the wiring around the heat source. Can be monitored.

<< Split processing (2) >>
The division process in the division portion 213 of the second embodiment will be described with reference to the flowcharts shown in FIGS. 13A to 14B. The other processes are the same as the processes described above with reference to FIGS. 9 to 10B.

As shown in the flowchart of FIG. 13A, the division unit 213 first sets "1" as the value of "m" and sets "1" as the value of "n" (S501). Here, it is assumed that the value of "m" represents a row and the value of "n" represents a column.

Subsequently, the dividing unit 213 determines whether or not there are two or more maximum cells for the target row (S502, S503). In addition, as described above, it is assumed that the adjacent maximum cell group is not included here.

When there are two or more maximal cells (YES in S503), the dividing unit 213 sets a boundary between the maximal cells (S504).

When the boundary is set in step S504, the division unit 213 determines whether or not the boundary has been set by the (m-1) th line (S505).
When the boundary is not set (NO in S505), the dividing unit 213 extends the boundary from the m-th row to the first line in which the boundary is set in step S504 (S506).

Further, when there are no more than two maximum cells (NO in S503), the boundary setting process 1 of the flowchart shown in FIG. 14A is executed (step S520). Specifically, as shown in FIG. 14A, in the boundary setting process 1, the division unit 213 determines whether or not the boundary is set by the (m-1) th line (S521).

When the boundary is set (YES in S521), the dividing unit 213 extends the boundary set up to the (m-1) th line to the mth line, and ends the boundary setting process 1 (S522).

On the other hand, when the boundary is not set (NO in S522), the division unit 213 determines whether or not the m-th row is the last row (S523).

When it is the last row (YES in S523), the dividing unit 213 sets the boundary from the first row to the mth row, which is the last row, with the boundary between the closest maximum cells in different rows as the boundary, and performs the boundary setting process 1. It ends (S524).
When it is not the last line (NO in S523), the division unit 213 ends the boundary setting process 1.
Further, when the boundary setting process 1 is completed, the process returns to the flowchart of step S13A.

As shown in the flowchart of FIG. 13A, if YES is determined in step S505, or after the boundary is extended in step S506, the division unit 213 determines whether or not the mth line is the last line of the image. (S507).

If it is not the last row (NO in S507), m is incremented until the last row is reached, and the processing of steps S503 to S508 is repeated (S502).
Further, when the processing is performed up to the last line (S507), the process proceeds to the processing shown in FIG. 13B.

As shown in FIG. 13B, the division unit 213 determines whether or not there are two or more maximum cells in the target column (S509, S510). In addition, as described above, it is assumed that the adjacent maximum cell group is not included here.

When there are two or more maximal cells (YES in S510), the dividing unit 213 sets a boundary between the maximal cells (S511).

When the boundary is set in step S511, the division unit 213 determines whether or not the boundary has been set by the (n-1) th column (S512).
When the boundary is not set (NO in S512), the dividing unit 213 extends the boundary from the nth column in which the boundary is set in step S511 to the first column (S513).

Further, when there are no more than two maximum cells (NO in step S510), the boundary setting process 2 of the flowchart shown in FIG. 14B is executed (step S530). Specifically, as shown in FIG. 14B, in the boundary setting process 2, the division unit 213 determines whether or not the boundary is set by the (n-1) th column (S531).

When the boundary is set (YES in S531), the division unit 213 extends the boundary set up to the (n-1) th column to the nth column, and ends the boundary setting process 2 (S532).

On the other hand, when the boundary is not set (NO in S532), the division unit 213 determines whether or not the nth column is the final column (S533).

When it is the last column (YES in S533), the dividing unit 213 sets the boundary between the nearest maximum cells in different columns as the boundary, and sets the boundary from the first column to the nth column, which is the last column, and performs the boundary setting process 2. It ends (S534).
When it is not the last column (NO in S533), the division unit 213 ends the boundary setting process 2.
Further, when the boundary setting process 2 is completed, the process returns to the flowchart of step S13B.

As shown in the flowchart of FIG. 13B, if YES is determined in step S512, or after the boundary is extended in step S513, the division unit 213 determines whether or not the nth column is the final column of the image. (S514).

If it is not the last column (NO in S514), n is incremented until the last column is reached, and the processing of steps S510 to S515 is repeated (S509).
The division unit 213 can set the area in this way.

Even if such a division method is used, in the area setting device 20, the monitoring area is set according to the image representing the temperature distribution acquired as the temperature data 221 and the threshold value is set for the monitoring area. Can be done. Therefore, by setting the monitoring area and the threshold value according to the device 40, it is possible to realize flexible and highly accurate temperature monitoring for the temperature monitoring device 10.

The temperature monitoring device and area setting device of the present disclosure are useful for temperature monitoring of equipment having a heat source.

1 Temperature monitoring system 10 Temperature monitoring device 11 Control unit 111 Acquisition unit 112 Transmission / reception unit 113 Monitoring unit 12 Storage unit 121 Temperature data 122 Area data 123 Threshold data P1 Temperature monitoring program 20 Area setting device 21 Control unit 211 Acquisition unit 212 Search unit 213 Dividing unit 214 Setting unit 22 Storage unit 221 Temperature data 222 Maximum value data 223 Area data P2 Area setting program

Claims (8)

An acquisition unit that acquires the temperature value detected by the temperature sensor as an image showing the temperature distribution divided into a plurality of cells in the row direction and the column direction, respectively.
From the image, a search unit for searching for a cell having a maximum temperature value in the row direction and a search unit for searching for a cell having a maximum temperature value in the column direction.
A region including a cell having a maximum temperature value searched by the search unit is set as a region corresponding to a heat source to be monitored, and the region is divided as a monitoring region for an image acquired by the acquisition unit. The split part and
Equipped with
The division starts comparing temperature values for all cells in descending or ascending order for each column.
When there are multiple cells with maximum temperature values in the same row or column direction, the monitoring area is set with the searched cells as boundaries, and the monitoring area is set.
When there are no cells with maximum temperature values in one column direction and the boundary is set in the previously compared columns, the area setting to set the boundary at the position where the boundary is extended for the column. Device. The area setting device according to claim 1, wherein the division unit is based on a cell having a maximum temperature value searched by the search unit, and a region including a cell outside a predetermined cell as a monitoring area. The division starts comparing the temperature values of all the cells in descending or ascending order for each row, and there are no cells having the maximum temperature value in one row direction, and the boundary is set in the previously compared rows. The area setting device according to claim 1, wherein when the line is set, the boundary is set at a position where the boundary is extended for the line. In the split section, when there are no cells having a maximum temperature value in one row direction for each row and no boundary is set in the previously compared rows, the temperature value is set between any of the different rows. The area setting device according to claim 3, wherein two cells having a maximum distance close to each other are extracted, and a monitoring area is set with the cell as a reference and a boundary between them. In the division, when there are no cells having a maximum temperature value in one row direction for each column and no boundary is set in the previously compared columns, the temperature is set between any of the different columns. The area setting device according to any one of claims 1 to 4, wherein two cells having a maximum value and a close distance are extracted, and a monitoring area is set with the cell as a reference. The monitoring area is further provided with a setting unit for setting a threshold value.
The area setting device according to any one of claims 1 to 5. A step of acquiring the temperature value detected by the temperature sensor as an image showing the temperature distribution divided into a plurality of cells in the row direction and the column direction, respectively.
From the image, a step of searching for a cell having a maximum temperature value in the x direction and a step of searching for a cell having a maximum temperature value in the y direction.
A step of setting a region including a cell having a maximum searched temperature value as a region corresponding to a heat source to be monitored and dividing the region as a monitoring region for an image to be acquired.
A step of monitoring the temperature value of the heat source for the monitoring area obtained by division, and
Have,
In the dividing step, comparison of temperature values is started for all cells in descending or ascending order for each column.
When there are multiple cells with maximum temperature values in the same row or column direction, the monitoring area is set with the searched cells as boundaries, and the monitoring area is set.
When there are no cells with maximum temperature values in one column direction and the boundary is set in the previously compared column, the temperature monitoring that sets the boundary at the position where the boundary is extended for the column. Method. A step of acquiring the temperature value detected by the temperature sensor as an image showing the temperature distribution divided into a plurality of cells in the row direction and the column direction, respectively.
From the image, a step of searching for a cell having a maximum temperature value in the x direction and a step of searching for a cell having a maximum temperature value in the y direction.
A step of setting a region including a cell having a maximum searched temperature value as a region corresponding to a heat source to be monitored and dividing the region as a monitoring region for an image to be acquired.
Have,
In the dividing step, comparison of temperature values is started for all cells in descending or ascending order for each column.
When there are multiple cells with maximum temperature values in the same row or column direction, the monitoring area is set with the searched cells as boundaries, and the monitoring area is set.
When there are no cells with maximum temperature values in one column direction and the boundary is set in the previously compared columns, the monitoring area that sets the boundary at the position where the boundary is extended for the column. Setting method.

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