JP2012141241A - Temperature measuring system - Google Patents

Abstract

To provide a temperature measurement system in which an optical fiber can be arranged with high accuracy and can be easily expanded and folded.
Two or more support members 13 having a fixed shape having openings, a connecting member 15a for rotatably connecting the two or more support members, and an optical fiber disposed on the two or more support members 12 and a temperature measurement unit 17 that receives backscattered light from the optical fiber and measures the temperature distribution of the optical fiber.
[Selection] Figure 2

Description

  The present invention relates to a temperature measurement system.

  In recent years, development of global warming prevention technology has been strongly demanded, and energy saving in all fields of society is required. For example, with the rapid spread of the broadband Internet environment, the number of Internet data centers (IDCs) is rapidly increasing. In a server room of a data center, a large number of servers are operating, and the number of servers operating in one data center is increasing, and power consumption is rapidly increasing as the number of operating servers increases. When the server is in operation, heat is generated corresponding to the power consumption of the server. Although cooling in the server room is performed in order to suppress a temperature rise due to heat generation of the server, at present, a huge amount of air conditioning power equivalent to the power consumption of the server is required for cooling. For this reason, the reduction of the air conditioning power in the server room of the data center can be expected to have a great energy saving effect, and the efficiency of the air conditioning is required.

  In order to save energy by efficiently air-conditioning a relatively large area such as a data center, office building, or large factory, it is necessary to measure the temperature distribution in that space in detail and accurately. . For example, in a server room or the like of a data center, it is required that the temperature is not more than a predetermined temperature at all locations within a predetermined range, and air conditioning control is performed so as to satisfy such a condition. Here, if there is a part where the temperature is locally high, the air conditioning control is performed so that the temperature of the part is lowered to a predetermined temperature or less, and the other parts are made to be unnecessarily low. Efficiency is reduced.

  Therefore, it is preferable to design the air conditioning in the room after measuring the temperature distribution in the space in the server room finely and accurately and grasping the state of local heat exchange as described above. For example, it is desired to measure the temperature distribution of the space in the server room with a distance resolution of about several centimeters.

  As a temperature sensor for measuring the temperature distribution of the indoor space, for example, a thermocouple or a thermistor has been conventionally used. Recently, intelligent temperature sensors in which an Internet protocol (IP) is assigned to each sensor have been developed, but these temperature sensors are expensive.

  As described above, in order to accurately measure the temperature distribution in the room, it is necessary to accurately arrange a large number of temperature sensors at predetermined measurement positions. Therefore, it is necessary to use a large number of expensive temperature sensors, and it is necessary to use a complicated arrangement mechanism, which causes a problem that the temperature measurement system becomes expensive.

  Therefore, it has been proposed to measure the temperature distribution in the space using the backscattered light of the optical fiber. This utilizes the temperature dependence of the backscattered light intensity of the optical fiber, and the temperature distribution at any position along the longitudinal direction of the optical fiber can be measured.

FIG. 1 is a diagram illustrating a configuration example of a temperature measurement system using backscattered light of an optical fiber.
A temperature measurement system 10 shown in FIG. 1 measures a temperature distribution of an optical fiber 12 by receiving a sheet 11, an optical fiber 12 disposed on the sheet 11, and backscattered light from the optical fiber 12. Unit 17.

  The temperature measurement system 10 measures the temperature distribution of the space using the backscattered light of the optical fiber 12. When pump light is incident on the optical fiber 12 from the temperature measurement unit 17, backscattered light is generated at each site in the longitudinal direction of the optical fiber 12. The intensity of the backscattered light depends on the temperature of the site where backscattering occurs in the optical fiber 12. As the type of backscattered light generated in the optical fiber 12, for example, brilliant scattered light, Raman scattered light, or Rayleigh scattered light can be used. The temperature measurement unit 17 receives the backscattered light from the optical fiber 12 and analyzes the light intensity to measure the temperature of each part of the optical fiber 12 where the backscattering has occurred. In this way, the temperature measurement system 10 measures the temperature distribution of the space with high distance resolution based on the temperature of each part along the longitudinal direction of the optical fiber 12.

  The temperature measurement unit 17 generates a pulsed pump light incident on the optical fiber 12 and analyzes the received backscattered light, a control unit 17b that controls the optical unit 17a, and displays measurement results and the like. And a monitor 17c.

  The sheet 11 supports the optical fiber 12 disposed thereon. The sheet 11 desirably has a low thermal conductivity and a small heat capacity so as to reduce the influence of temperature measurement. Furthermore, it is desirable that the member that supports the optical fiber 12 does not affect the movement of heat between the disposed optical fiber 12 and the space in which the optical fiber 12 is disposed. Therefore, in the example shown in FIG. 1, a mesh sheet having a large opening in which fibers are arranged in a mesh shape is used so as not to disturb the surrounding airflow, but as a member for supporting the optical fiber 12, For example, a sheet having a large number of punched openings may be used.

  As shown in FIG. 1, the optical fiber 12 is disposed on the sheet 11 so as to form a plurality of coil portions 12 a formed by winding a part of the optical fiber 12, and the sheet is formed using an adhesive. 11 is fixed.

  The part of the predetermined length of the optical fiber 12 forming the coil part 12a has the temperature of the space in which the coil part 12a is located, and therefore has substantially the same temperature. Therefore, by measuring the backscattered light of the portion of the optical fiber 12 that forms the same coil portion 12a, the predetermined temperature of the optical fiber 12 that forms the coil portion 12a is determined with respect to the temperature of the space where the coil portion 12a is located. An averaged temperature of the length portion will be obtained. Thus, by providing the coil part 12a, the influence of noise on temperature measurement can be reduced.

When performing temperature measurement, the sheet 11 is developed and held in a temperature measurement space so that the coil portion 12a is positioned at the measurement point, and measurement is performed.
Since the sheet 11 that supports the optical fiber 12 has flexibility, it can be disposed at a desired position such as around the pipe.
However, when the sheet supporting the optical fiber 12 has flexibility, it is difficult to hold such a sheet, and it is difficult to accurately arrange the coil portion 12a of the optical fiber 12 at a desired position. is there.

As described above, when measuring the temperature of the space in the server room of the data center, it is desired to measure with a distance resolution of about several centimeters, and the coil portion 12a of the optical fiber 12 is arranged with an error of about 1 cm. There is a need to.
On the other hand, since the server room is air-conditioned, it is required not to disturb the air-conditioning airflow. Therefore, as in the example of FIG. 1, it is desirable to use a mesh sheet in which fibers are arranged in a mesh pattern or a sheet having a large number of openings as a sheet for supporting the optical fiber 12, but such a sheet is accurate. Difficult to place in.

  Further, the sheet 11 is developed in a space for measurement only at the time of temperature distribution measurement, and is collected in a small size after the measurement is completed. It can happen to damage.

JP-A-3-210440 JP-A-4-174331

  According to the embodiment, an optical fiber locked to a sheet having a small influence on an airflow can be accurately arranged, and a temperature measurement system that can be easily deployed and collected is realized.

  According to the first aspect of the invention, two or more fixed-shaped support members having openings, a connecting member that rotatably connects the two or more support members, and the two or more support members are disposed. There is provided a temperature measurement system comprising: the measured optical fiber; and a temperature measurement unit that receives backscattered light from the optical fiber and measures a temperature distribution of the optical fiber.

According to the temperature measurement system of the embodiment, since the support member having a small influence on the airflow has a fixed shape, the optical fiber locked to the support member can be accurately arranged, and the measurement accuracy can be improved.
In addition, the support member can be easily deployed and collected, and damage to the optical fiber during deployment and collection can be reduced.

FIG. 1 is a diagram illustrating a configuration example of a temperature measurement system using backscattered light of an optical fiber. FIG. 2 is a diagram illustrating a member that supports the optical fiber 12 in the first embodiment. FIG. 3 is a view showing one of the support members. 4 is an enlarged view of the optical fiber protection member shown in FIG. FIG. 5 is a diagram showing a form of a plurality of connected support members. FIG. 6 is a diagram illustrating a configuration on the support member side of the connection angle setting mechanism in the first embodiment. FIG. 7 is a diagram illustrating a state in which the connection angle setting member and the connection angle setting member are attached to the support member. FIG. 8 is a view showing a modification of the connecting member. FIG. 9 is a diagram showing an example in which optical fibers arranged on adjacent support members are optically connected by an optical connector. FIG. 10 is a diagram illustrating an example in which optical fibers disposed on adjacent support members are optically connected by an optical connector. FIG. 11 is a diagram illustrating one of the support members of the temperature measurement system according to the second embodiment. FIG. 12 is a diagram illustrating a plurality of connected support members in the temperature measurement system of the third embodiment. FIG. 13 is a diagram illustrating a plurality of connected support members in the temperature measurement system of the fourth embodiment.

Hereinafter, a preferred embodiment of the temperature measurement system disclosed in the present specification will be described with reference to the drawings.
The temperature measurement system of the first embodiment has a basic configuration similar to the basic configuration of the temperature measurement system shown in FIG. The temperature measurement system according to the first embodiment is suitable for measuring the temperature distribution of a space with airflow for air conditioning such as a space in a data center server room with high positional accuracy while minimizing the disturbance of the airflow. ing.

  As shown in FIG. 1, the temperature measurement system according to the first embodiment receives an optical fiber 12, a member that supports the optical fiber 12, and backscattered light from the optical fiber 12 to receive the temperature distribution of the optical fiber 12. And a temperature measuring unit 17 for measuring. The temperature measurement system 10 uses the backscattered light of the optical fiber 12 to calculate the temperature distribution of the space, that is, the temperature distribution of the space with high distance resolution based on the temperature of each part along the longitudinal direction of the optical fiber 12. Measure. The temperature measurement unit 17 generates the pulsed pump light incident on the optical fiber 12 and analyzes the received backscattered light, the control unit 17b that controls the optical unit 18a, and displays the measurement results and the like. Monitor 17c.

In the temperature measurement system of the first embodiment, the member that supports the optical fiber 12 is different from the sheet 11 shown in FIG.
FIG. 2 is a diagram illustrating a member that supports the optical fiber 12 in the first embodiment.
As shown in FIG. 2, the members that support the optical fiber 12 include two or more (here, eight) support members 13, a connecting member 15 a that rotatably connects adjacent support members 13, and an optical fiber. And a protection member 18. The optical fiber protection member 18 protects the portion of the optical fiber 12 that is disposed across the adjacent support members 13.

FIG. 3 is a view showing one of the support members 13.
As shown in FIG. 3, the support member 13 has a rectangular frame (frame) 13a, a plurality of wires 13b stretched in the longitudinal direction of the frame 13a, and a connecting member 15a. The wires 13b are arranged at intervals in the width direction of the frame 13a (direction orthogonal to the longitudinal direction). A portion between the frame 13a and the wire 13b becomes an opening.

  The frame 13a is preferably formed using a material having rigidity. As a material for forming the frame 13a, for example, a metal such as aluminum, wood, or a synthetic resin can be used. The wire 13b is preferably formed using a material having a mechanical strength sufficient to support the disposed optical fiber 12. As a forming material of the wire 13b, for example, glass fiber, carbon fiber, synthetic resin fiber, or the like is preferably used, but metal fiber such as stainless steel or plant-derived fiber can be used.

  As synthetic resin fibers, fibers made of polyolefin (polyethylene, polypropylene, polycycloolefin, etc.), polyester, polyamide, polyimide, polyvinyl chloride, cellulose (including regenerated cellulose, cellulose derivatives), polyurethane, etc. can be used. . Further, as the metal fiber, a fiber made of iron, stainless steel, aluminum, copper, brass or the like can be used.

  Here, the wire 13b is provided so as to extend only in the longitudinal direction. However, the wire 13b may be provided so as to extend in a direction perpendicular to the wire 13b to have a mesh shape. It is also possible to use a sheet in which a large number of openings are formed. As the material of the sheet, the material for forming the wire 13b can be used.

  The optical fiber 12 is disposed in a state where a plurality of support members 13 are connected. The optical fiber 12 has a plurality of coil portions 12 a formed by winding a part of the optical fiber 12, and the coil portions 12 a are fixed between adjacent wires 13 b and disposed on the support member 13. Has been. As described above, the influence of noise on the temperature measurement can be reduced by providing the coil portion 12a. The dimensions and intervals of the plurality of coil portions 12a can be appropriately set according to the distance resolution of the required temperature distribution.

  One of the connecting members 15a is fixed to the side of the frame 13a of the supporting member 13, and the other is fixed to the frame 13a of the other supporting member 13 to be connected. Here, the two support members 13 are connected by the two connection members 15a. For example, a hinge can be used as the connecting member 15a, and the two support members 13 are connected rotatably. Thereby, two or more support members 13 can change a state easily between the state developed in the shape of a plane, and the state folded.

  When the plurality of support members 13 are folded, the optical fiber protection member 18 has a portion between the optical fiber 12 disposed on one support member 13 and the optical fiber 12 disposed on the other support member 13. This prevents the optical fiber 12 from being bent with a radius of curvature smaller than the allowable minimum radius of curvature. Here, the allowable minimum radius of curvature of an optical fiber means a radius of curvature that can cause the optical fiber to break or fail to transmit light normally if the optical fiber is bent with a smaller radius of curvature. .

FIG. 4 is an enlarged view of the optical fiber protection member 18 shown in FIG.
The optical fiber protection member 18 is hollow and flexible, and the optical fiber 12 is inserted into the optical fiber protection member 18. The minimum radius of curvature that the optical fiber protection member 18 can be bent or broken is larger than the minimum radius of curvature of the optical fiber 12. Therefore, when the plurality of support members 13 are folded, the portion of the optical fiber 12 inserted into the optical fiber protection member 18 is prevented from being bent with a radius of curvature larger than the minimum radius of curvature. The optical fiber 12 may be disposed on the outer surface of the optical fiber protection member 18. As the optical fiber protection member 18, for example, a hollow tube made of a synthetic resin formed in a bellows shape can be used.

In the first embodiment, a support member coupling body having an arbitrary length can be formed according to the number of support members 13 to be coupled. Here, the support member connection body is formed by connecting a plurality of support members 13.
In the temperature measurement system of the first embodiment, it will be described below that the plurality of connected support members 11 can take several forms when measuring the temperature distribution.

FIG. 5A is a diagram showing a state in which a plurality of (here, five) support members 13 are developed in a straight line. At this time, each connecting member 15a is open at 180 degrees. FIG. 5B shows a state in which the adjacent support members 13 are expanded at a predetermined angle, and FIG. 9C shows a state in which some of the support members 13 are folded and the other support members 13 are expanded in a straight line. Shows the state.
In the first embodiment, since the position of the optical fiber 12 can be accurately determined in any state of FIGS. 5A to 5C, the temperature distribution may be measured in any state.

  As shown in FIG. 5C, the temperature distribution measurement is performed in a state where a part of the plurality of support members 13 is folded, rather than the length in which the plurality of support members 13 are connected and expanded. This is because the length of the space where the temperature measurement is performed may be short. The temperature measurement value measured from the folded portion of the optical fiber 12 may not be used as a measurement result, for example.

  As shown in FIGS. 5A to 5C, the bending angle of the coupling member 15a is fixed in multiple stages or continuously so that the expanded state of the plurality of support members 13 is fixed. It is preferable to have a function.

Moreover, in order to couple | bond the support member 13 at arbitrary angles, you may use another connection angle setting mechanism demonstrated below.
As shown in FIG. 6, two protrusions 16a are provided on the upper side of one frame 13a of the supporting member 13 to be connected, and one protrusion 16a is provided on the upper side of the other frame 13a.

  FIG. 7 is a view showing a state in which the connection angle setting member 16 b attached to the support member 13 and the connection angle setting member are attached to the support member 13. As illustrated, the connection angle setting member 16b is a plate-like member having three holes 16c. FIG. 7A shows the connection angle setting member 16b when the supporting members 13 to be connected are connected in a straight line, that is, at an angle of 180 degrees, and FIG. 7B shows the connection angle setting member of FIG. The state which attached 16b is shown. The connection angle setting member 16b is attached to the upper side of the frame 13a so that the protrusion 16a on the upper side of the frame 13a fits into the hole 16c of the connection angle setting member 16b.

  FIG. 7C shows a connection angle setting member 16b when the supporting members 13 to be connected are connected in the opposite direction, that is, at an angle of 0 degrees, and FIG. 7D is a connection angle setting of FIG. 7C. The state which attached the member 16b is shown. FIG. 7 (E) shows a connection angle setting member 16b when the supporting members 13 to be connected are connected at right angles, that is, at an angle of 90 degrees, and FIG. 7 (F) is a connection angle setting of FIG. 7 (E). The state which attached the member 16b is shown. FIG. 7 (G) shows a connection angle setting member 16b when the supporting members 13 to be connected are connected at an angle of 45 degrees, and FIG. 7 (H) is attached with the connection angle setting member 16b of FIG. 7 (G). Indicates the state.

  As shown in FIG. 7, if this connection angle setting mechanism is used, the support members 13 can be connected at an arbitrary angle, and the position of the optical fiber 12 in each support member 13 can be accurately determined.

When measuring the temperature distribution with the temperature measurement system of the first embodiment, the support member 13 is developed into a desired shape according to the position where the temperature measurement is performed, and the coil portion 12a is arranged at the position where the temperature measurement is performed. The deployed support member 13 is disposed on the surface.
For example, when measuring the temperature distribution in a plane perpendicular to the floor in the room, the temperature is measured by placing the lower side of the expanded support member 13 at a predetermined position on the floor. Further, when measuring the temperature distribution in the three-dimensional space, such temperature measurement is performed while shifting the position on the floor. In addition, the expanded support member 13 can be held parallel to the floor, and the temperature distribution in a plane parallel to the indoor floor can be measured. Furthermore, the temperature distribution in a plane oblique to the floor can also be measured. Furthermore, by connecting the adjacent support members 13 at an arbitrary angle, the temperature distribution at a desired position such as on a bent surface can be measured.

The support member 13 can be easily deployed, and can be easily recovered in a folded state.
In any case, since the optical fiber 12 is locked by the wire 13b stretched on the frame 13a having the rigidity of each support member 13, the optical fiber 12 is accurately positioned at a predetermined position with respect to the frame 13a. Furthermore, since the positional relationship between the deployed support members 13 can also be accurately determined, the optical fiber 12 can be accurately arranged at a desired position. Thereby, the temperature distribution can be measured with high positional accuracy.

FIG. 8 is a view showing a modified example of the connecting member 15a.
In the first embodiment, a hinge or the like is used as the connecting member 15a, but other connecting mechanisms can also be used. As shown in FIG. 8, an extension 21a is provided on the upper side of the side of the frame 13a of the one supporting member 13 to be connected, and a rotating shaft 21d is provided on the extension 21a. An extension 21b is provided at the center of the side of the frame 13a of the other supporting member 13 to be connected, and a hole 21e into which the rotating shaft 21d is inserted is provided above the extension 21b. The hole 21e is also provided below the extension portion 21b. And the shaft fixing member 21c which has the rotating shaft 21d inserted in the hole 21e provided also under the extension part 21b is prepared. The shaft fixing member 21c has a screw hole 21f for fixing to the frame 13a of the one supporting member 13 to be connected. The rotating shaft 21d of the extension portion 21a is inserted into the hole 21e, the rotating shaft 21d of the shaft fixing member 21c is further inserted into the hole 21e, and the shaft fixing member 21c is fixed to the frame 13a. Thereby, the two support members 13 are connected so that rotation is possible. Although FIG. 8 shows a case where two frames 13a are connected, when connecting three or more frames 13a, a similar connecting mechanism is provided on the other side.

  In the first embodiment, the optical fiber 12 is disposed in a state where a plurality of support members 13 are connected. In other words, one optical fiber 12 is disposed on the plurality of support members 13 connected to each other. However, the optical fibers disposed on the adjacent support members 13 may be optically connected by an optical connector.

FIG. 9 is a diagram showing a modification in which optical fibers arranged on adjacent support members 13 are optically connected by an optical connector.
As shown in FIG. 9, the pair of support members 13 on the left side has a single optical fiber 12 in a state where the two support members 13 are connected as described in the first embodiment. It is arranged. Therefore, the set 13c of the two support members 13 has one optical fiber protection member 18 on the lower side. Similarly, the set 13d of the right three support members 13 is provided with one optical fiber 12 in a state where the three support members 13 are connected as described in the first embodiment. Yes. Accordingly, the set 13 d of the right three support members 13 includes two optical fiber protection members 18 on the upper side of the first and second support members 13 and on the lower side of the second and third support members 13. Have. A first optical connector 19a is provided at the end of the sub optical fiber 12 disposed in the left set 13c. Similarly, a second optical connector 19b is provided at the end of the child optical fiber 12 disposed in the right set 13d. By connecting the first optical connector 19a and the second optical connector 19b, the sub optical fiber 12 arranged in the left set 13c and the sub optical fiber 12 arranged in the right set 13d are optically connected. It will be in the state. As a result, as in the first embodiment, one optical fiber 12 is substantially disposed.

In the modification of FIG. 9, two support members 13 are set as a group 13c, three support members 13 are set as a set 13d, and a child optical fiber is provided for each, and optical connectors are provided at both ends of the child optical fiber. However, each support member 13 may be provided with a child optical fiber, and optical connectors may be provided at both ends of the child optical fiber.
According to the modification shown in FIG. 9, the number of support members 13 to be connected can be freely changed according to the measurement conditions to be connected.

  FIG. 10 shows an example in which the position where the optical fiber 12 drawn out from the set 13d of the left three support members 13 is drawn out is the lower side in the modification of FIG.

FIG. 11 is a diagram illustrating one support member 13 of the temperature measurement system according to the second embodiment.
The support member 13 of the second embodiment is different from the support member 13 of the first embodiment in that a caster 30 is provided, and other parts are the same as those of the first embodiment. The caster 30 is attached to a leg portion 31 provided on the lower side of the frame 13 a of the support member 13. The caster 30 is widely used and includes a base 32, a holding frame 33 attached to the base 32, and a sphere 34 that is rotatably held by the holding frame 33.

  By attaching the casters 30 to the respective support members 13, the connected support members 13 can be freely moved on the floor surface, and the connected support members 13 can be easily expanded and folded.

FIG. 12 is a diagram illustrating a plurality of connected support members 13 in the temperature measurement system of the third embodiment.
The third embodiment is different in that the moving member 41 is connected to the support members 13 at both ends of the plurality of connected support members 13 in the first embodiment, and the other parts are the same as those in the first embodiment. The moving member 41 has a leg portion 42 provided at the lower portion. The caster 43 is attached to the leg portion 42 of the moving member 41. The caster 43 is widely used, and has a base 43a and a roller 43b rotatably held by the base 43a. The moving member 41 is connected to the support members 13 at both ends of the connected support members 13 by the connecting member 15a.

  Since the plurality of connected support members 13 are connected between the two moving members 41 that can freely move on the floor surface, the plurality of connected support members 13 can freely move on the floor surface, and the unfolding of the connected plurality of support members 13 can be performed. And folding can be performed easily.

FIG. 13 is a diagram illustrating a plurality of connected support members 13 in the temperature measurement system of the fourth embodiment.
In the fourth embodiment, two moving members similar to the moving member 41 of the third embodiment are used, but the two moving members 41 are connected to the support members 13 at both ends of the plurality of connected support members 13. Do not connect. Two guide wires 15 c are installed between the two moving members 41. One of the two moving members 41 is provided with a winding mechanism for winding the two guide wires 15c. By the winding mechanism, the two guide wires 15c expand when the distance between the two moving members 41 is increased, and contract when the distance between the two moving members 41 is shortened, and can be locked at a desired distance. It has become.

  The support member 13 has a guide ring 15b disposed at the uppermost part and the lowermost part of one side, and two guide wires 15c are inserted into the two guide rings 15b. Thereby, the connected support members 13 can be easily expanded and folded along the two guide wires 15c.

When measuring the temperature distribution in the plane of a certain space, the two moving members 41 are moved to both sides of this plane. Thereby, the two guide wires 15c are arrange | positioned along this plane. Then, the coupled support members 13 are developed along the two guide wires 15c, the coil portion 12a of the optical fiber 12 is arranged at a desired position, and temperature measurement is performed.
A fixed guide rod can be used instead of the guide wire 15c.

Although the embodiment has been described above, various modifications are possible.
For example, in the embodiment described above, the coil portion 12a has a circular shape, but may have another shape such as a polygonal shape.
In the above-described embodiment, the optical fiber is meandered on the support member. However, the optical fiber is linear, wavy, looped, or polygonal on the support member. It may be arranged in a form.

  Hereinafter, examples of the temperature measurement system disclosed in this specification will be described below.

[Example 1]
As the optical fiber, a multimode graded index type quartz optical fiber (HFR-2Z-1, manufactured by Furukawa Electric Co., Ltd., coated with polyurethane resin) was used. As the temperature measurement unit, a Raman scattered light type temperature measurement device (DTS800M manufactured by SENSA) was used. The coil portion was formed by winding an optical fiber seven times with a diameter of 45 mm.

  An aluminum frame (width 700 mm × length 2000 mm) was used as the frame of the support member. The coil portion was formed by winding an optical fiber seven times with a diameter of 45 mm. On the wire hung on the frame, the coil portion was fixed at intervals of 10 cm using hot-melt adhesive to form a support member. Ten such support members were prepared. A guide wire made of stainless steel having a diameter of 1 mm was inserted through the guide rings arranged at the four corners of the support member. The support members were connected to each other using a hinge as a bending member. As an optical fiber protection member, a corrugated tube (inner diameter: 5.4 mm, outer diameter: 7.8 mm, with slit) manufactured by Sumitomo Wiring Systems, Ltd. was used.

  In the above-described first embodiment, when not in use, the space can be made compact and small in a space of 700 mm × 2000 mm × 200 mm, and in use, the folded support members are sequentially opened from the end, so that it is extremely short and easy. It is possible to develop a plurality of support members in a plane shape in the longitudinal direction, and the temperature distribution on the data center passage and server rack surface can be measured with a high distance resolution of 10 cm mesh in a few minutes. It was.

  Although the embodiment has been described above, all examples and conditions described herein are described for the purpose of helping understanding of the concept of the invention applied to the invention and the technology. It is not intended to limit the scope of the invention, and the construction of such examples in the specification does not indicate the advantages and disadvantages of the invention. Although embodiments of the invention have been described in detail, it should be understood that various changes, substitutions and modifications can be made without departing from the spirit and scope of the invention.

Hereinafter, the following additional notes will be disclosed with respect to the embodiment.
(Appendix 1)
Two or more fixed-shaped support members having openings;
A connecting member that rotatably connects the two or more support members;
Optical fibers disposed on the two or more support members;
A temperature measurement unit that receives backscattered light from the optical fiber and measures a temperature distribution of the optical fiber;
A temperature measurement system comprising:
(Appendix 2)
The optical fiber includes a plurality of optical fibers disposed on each of the two or more support members, each having a first connection connector at one end and a second connection connector at the other end,
The temperature measurement system according to claim 1, wherein the first connection connector and the second connection connector of the child optical fiber disposed on the two supporting members to be connected are connected.
(Appendix 3)
Each of the two or more support members includes a fixed-shaped frame and fibers stretched in a mesh pattern on the frame,
An opening is formed between the mesh-like fibers,
The optical fiber is locked to the fiber,
The temperature measuring system according to claim 1 or 2, wherein the connecting member is provided on the frame of the two supporting members to be connected.
(Appendix 4)
The temperature measurement system according to any one of appendices 1 to 3, further comprising a caster provided at a lower portion of the support member and movably supporting the support member on a floor surface.
(Appendix 5)
Two moving members connected to supporting members at both ends of the two or more supporting members connected;
The temperature measuring system according to any one of appendices 1 to 4, wherein each of the two moving members includes a caster that movably supports the moving member on a floor surface.
(Appendix 6)
Two moving members connected to supporting members at both ends of the two or more supporting members connected;
A guide member provided between the two moving members,
The temperature measurement system according to any one of appendices 1 to 5, wherein each of the two or more support members includes a locking member for locking to the guide member.
(Appendix 7)
The guide member is a wire stretched between the two moving members,
The temperature measuring system according to appendix 6, wherein the locking member is a ring for locking each support member to the wire.

DESCRIPTION OF SYMBOLS 10 Temperature measurement system 11 Sheet | seat 12 Optical fiber 12a Coil part 13 Support member 13a Frame 13b Wire (fiber)
15a Connecting member 17 Temperature measuring unit 17a Optical unit 17b Control unit 17c Monitor 18 Optical fiber protection member

Claims (5)

Two or more fixed-shaped support members having openings;
A connecting member that rotatably connects the two or more support members;
Optical fibers disposed on the two or more support members;
A temperature measurement unit that receives backscattered light from the optical fiber and measures a temperature distribution of the optical fiber;
A temperature measurement system comprising: The optical fiber includes a plurality of optical fibers disposed on each of the two or more support members, each having a first connection connector at one end and a second connection connector at the other end,
2. The temperature measurement system according to claim 1, wherein the first connection connector and the second connection connector of the child optical fiber disposed on the two supporting members to be connected are connected. Each of the two or more support members includes a fixed-shaped frame and fibers stretched in a mesh pattern on the frame,
An opening is formed between the mesh-like fibers,
The optical fiber is locked to the fiber,
The temperature measuring system according to claim 1, wherein the connecting member is provided on the frame of the two supporting members to be connected. Two moving members connected to supporting members at both ends of the two or more supporting members connected;
4. The temperature measurement system according to claim 1, wherein each of the two moving members includes a caster that movably supports the moving member on a floor surface. 5. Two moving members connected to supporting members at both ends of the two or more supporting members connected;
A guide member provided between the two moving members,
5. The temperature measurement system according to claim 1, wherein each of the two or more support members includes a locking member for locking to the guide member.

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