Temperature distribution measurement method, air conditioning control system, server room, and thermal distribution imaging device

Abstract

To measure temperature distribution on an intake side for a wider range of server racks.SOLUTION: A method of measuring temperature distribution in a server room in which server racks are aligned with an intake side facing a predetermined space includes the steps of: installing a heat distribution imaging device including a metal hemisphere and a thermo camera with an imaging direction facing a spherical surface of the hemisphere, at a supply port where cold air is supplied to the predetermined space, with the spherical surface facing the predetermined space; and obtaining a heat distribution image on the spherical surface taken by the thermo camera.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a temperature distribution measuring method, an air conditioning control system, a server room, and a thermal distribution imaging device. [Background technology]

[0002] Techniques have been proposed for measuring temperature distribution using a thermal camera and determining the state of an object to be measured using the measured temperature distribution (see Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5729993 [Patent Document 2] Japanese Patent Application Publication No. 11-023478 [Patent Document 3] Japanese Patent Publication No. 2020-035113 Summary of the Invention [Problem to be solved by the invention]

[0004] Air conditioning control technologies are being developed to efficiently condition spaces. However, in order to efficiently condition a space, it is necessary to accurately grasp the temperature distribution in the space to be air-conditioned.

[0005] For example, a space that requires air conditioning may be a server room where numerous pieces of information processing equipment are installed. A method for determining the temperature distribution in a server room is to install temperature sensors on the front side (intake side) of the racks in the server room or at the cold air outlets on the raised floor. However, this method is insufficient for accurately determining the temperature distribution in the server room because it measures only the points where the temperature sensors are installed. Furthermore, obtaining an accurate temperature distribution requires installing multiple temperature sensors, which increases costs and labor time. Even if a thermal camera is used instead of a temperature sensor, the temperature distribution that can be obtained is limited to the thermal camera's imaging range, and the same problems as with a temperature sensor can occur.

[0006] One aspect of the disclosed technology aims to provide a temperature distribution measurement method, an air conditioning control system, and a server room that can measure the temperature distribution on the intake side of a wider range of server racks. [Means for solving the problem]

[0007] One aspect of the disclosed technology is exemplified by the following temperature distribution measurement method: This temperature distribution measurement method is a method for measuring the temperature distribution in a server room where server racks are lined up with their intake sides facing a predetermined space, and includes the steps of: installing a thermal distribution imaging device including a metallic hemisphere and a thermal camera facing the spherical surface of the hemisphere at a supply port through which cool air is supplied to the predetermined space, with the spherical surface facing the predetermined space; and acquiring a thermal distribution image of the spherical surface captured by the thermal camera.

[0008] In this temperature distribution measurement method, the temperature distribution on the intake side of server racks arranged within a 360-degree range around the thermal distribution imaging device is reflected on the spherical surface of a hemisphere. By using a thermal camera to capture the spherical surface, it is possible to capture the temperature distribution on the intake side of server racks over a wider range of server racks without installing a large number of temperature sensors. In other words, this temperature distribution measurement method makes it possible to capture the temperature distribution on the intake side of server racks over a wider range of server racks while reducing the cost and work time required to install a large number of temperature sensors. do.

[0009] Here, the predetermined space may be provided with a flow rectifier that adjusts the flow rate of cool air supplied from the air conditioner to the predetermined space, and in the providing step, the thermal distribution imaging device may be provided on the flow rectifier. Because the flow rate of cool air supplied from the air conditioner is fast near the flow rectifier, it is considered that there is a high probability that warm air from the hot air aisle will circulate around the flow rectifier. By providing the thermal distribution imaging device on the flow rectifier, it is possible to monitor with high resolution the area where warm air is likely to circulate.

[0010] This temperature distribution measurement method may further include a step of covering the entire intake side of the server rack with a breathable heat-shielding sheet before acquiring the thermal distribution image. The heat-shielding sheet blocks heat from the blanking panels and servers inside the server rack. Therefore, by including such a step, this temperature distribution measurement method can more accurately grasp the temperature distribution of the cool air supplied to a specified space.

[0011] The disclosed technology can also be understood as an air conditioning control system and a server room equipped with such an air conditioning control system. Such an air conditioning control system is an air conditioning control system for a server room in which server racks are lined up with their intake sides facing a predetermined space, and includes an air conditioner that supplies cool air to the predetermined space, a thermal distribution imaging device including a metal hemisphere and a thermal camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed at the air conditioner's outlet with the spherical surface facing the predetermined space, and a control device that acquires a thermal distribution image of the spherical surface captured by the thermal camera and controls the air conditioner based on the acquired thermal distribution image.

[0012] The control device may also suppress control of the air conditioner while detecting a person in the server room. By performing such control, the control device can suppress erroneous detection that a high temperature area detected due to the presence of a person in the server room is due to an insufficient supply of cool air.

[0013] Here, the thermal distribution image may include an image of an access door installed in the server room, and the control device may control the air conditioner by excluding the access door from the thermal distribution image. Since the access door is opened every time someone enters or exits, it is thought that the temperature near the access door will be unstable. By excluding such an access door from the control of the air conditioner, the control of the air conditioner can be made more stable.

[0014] The disclosed technology can also be understood as a thermal distribution imaging device. Such a thermal distribution imaging device is installed in a server room where server racks are lined up with their intake sides facing a predetermined space. This thermal distribution imaging device includes a metallic hemisphere and a thermal camera whose imaging direction is directed toward the spherical surface of the hemisphere. The thermal distribution imaging device is installed at a supply port through which cool air is supplied to the predetermined space with the spherical surface facing the predetermined space, and the thermal camera captures the spherical surface to generate a thermal distribution image. [Effects of the Invention]

[0015] According to the disclosed technology, it is possible to measure the temperature distribution on the intake side of a wider range of server racks. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram showing an example of a thermal distribution imaging device used in an air-conditioning control system according to an embodiment. [Figure 2] FIG. 2 is a plan view showing a server room in which the temperature distribution is to be measured in the embodiment. [Figure 3] FIG. 3 is a diagram showing a schematic view of the flow of cool air. [Figure 4] FIG. 4 is a diagram showing a schematic view of the flow of warm air. [Figure 5] FIG. 5 is a diagram illustrating a position where a thermal distribution imaging device is provided in the embodiment. [Figure 6] FIG. 6 is an example of a side cross-sectional view of a rack in the embodiment. [Figure 7] FIG. 7 is a diagram showing an example of a thermal distribution image captured by the thermal distribution imaging device in the embodiment. [Figure 8] FIG. 8 is a diagram showing a first example of a planar development of the thermal distribution image shown in FIG. [Figure 9] FIG. 9 is a diagram showing a second example of a planar development of the thermal distribution image shown in FIG. [Figure 10] FIG. 10 is a diagram illustrating an example of the system configuration of an air conditioning control system according to an embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of a hardware configuration of an air conditioning control device according to an embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of a control flow of the air conditioning control system according to the embodiment. [Figure 13] FIG. 13 is a diagram illustrating an example of a processing flow of the air conditioning control device in the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] <Embodiment> The configurations of the following embodiments are merely examples, and the disclosed technology is not limited to the configurations of the embodiments. Figure 1 is a diagram showing an example of a thermal distribution imaging device used in an air-conditioning control system according to an embodiment. The thermal distribution imaging device 100 includes a thermal camera 110, a stainless steel hemisphere 120, and a connecting member 130 that connects the thermal camera 110 and the stainless steel hemisphere.

[0018] The thermal camera 110 is a camera capable of measuring temperature distribution by detecting infrared rays. The thermal camera 110 has a main body 111 and a lens barrel 112. The lens barrel 112 is cylindrical. One or more optical lenses are provided inside the lens barrel 112. The main body 111 has an image sensor and a processor. Examples of the image sensor include a charge coupled device (CCD) image sensor and a complementary metal-oxide-semiconductor (CMOS) image sensor. In the thermal camera 110, for example, infrared rays incident through the optical lens of the lens barrel 112 are incident on the image sensor, and a thermal distribution image showing the temperature distribution is generated. The angle of view of the thermal camera 110 is, for example, 25 degrees. In other words, it is difficult for the thermal camera 110 alone to capture a 360-degree image around the thermal camera 110.

[0019] The SUS hemisphere 120 is provided in the shooting direction of the thermal camera 110. The SUS hemisphere 120 is a hemispherical spherical reflector made of a metal such as stainless steel. The SUS hemisphere 120 may be solid or hollow. The SUS hemisphere 120 reflects the surrounding temperature distribution on the spherical surface 121 by receiving infrared rays radiated from surrounding objects, for example.

[0020] The connecting member 130 is a cylindrical member that connects the lens barrel 112 of the thermal camera 110 and the SUS hemisphere 120. The inner diameter of the connecting member 130 is equal to the outer diameters of the lens barrel 112 and the SUS hemisphere 120. The connecting member 130 is made of a material that is transparent to infrared rays. An example of a material that is transparent to infrared rays is an acrylic plate. The lens barrel 112 is inserted into one end of the connecting member 130, and the SUS hemisphere 120 is inserted into the other end with its spherical surface 121 facing the connecting member 130. In other words, the connecting member 130 allows the thermal camera 110 to shoot in a state where its shooting direction is directed toward the spherical surface 121 of the SUS hemisphere 120. The length of the connecting member 130 is determined appropriately depending on the angle of view of the lens of the thermal camera 110. For example, the length of the connecting member 130 may be determined so that the spherical surface 121 of the SUS semicircular sphere 120 fits within the imaging range of the thermal camera 110. More preferably, the length of the connecting member 130 is determined so that the spherical surface 121 of the SUS semicircular sphere 120 occupies most of the imaging range of the thermal camera 110.

[0021] FIG. 2 is a plan view showing a server room 1, which is the subject of temperature distribution measurement in this embodiment. The server room 1 is equipped with an air conditioning unit 11. A plurality of rack rows 9 are installed in the server room 1, and racks 90, each equipped with one or more information processing devices 91, are arranged horizontally in each rack row 9. Note that in FIG. 2, five racks 90 are arranged in one rack row 9, and there are two rack rows 9 in the server room 1, but the number of racks 90 arranged in one rack row 9 and the number of rack rows 9 arranged in the server room 1 are not particularly limited. The racks 90 are an example of a "server rack."

[0022] In the server room 1, the rows of racks 9 are arranged so that their fronts (the intake sides of the information processing equipment 91) face each other. The air conditioning units 11 supply cool air to the aisles on the front side of the rows of racks 9. The aisles to which the cool air is supplied are also called cold aisles. The information processing equipment 91 cools the inside of the equipment by drawing in the cool air supplied to the cold aisle and discharging the warm air that has been warmed by the heat inside the equipment to the rear. The aisle behind the rows of racks 9, from which the warm air is discharged, is also called hot aisle.

[0023] FIG. 3 is a schematic diagram showing the flow of cold air. FIG. 3 is a side view of the cold air aisle. As illustrated in FIGS. 2 and 3, mesh-shaped flow rectifiers 12 are provided between the ends and upper ends of the rows of racks 9 that sandwich the cold air aisle. The flow rectifiers 12 are installed to prevent poor intake of cold air into the racks 90 due to a drop in static pressure or turbulence on the intake side of the racks 90 caused by the high flow rate of air blown out from the air conditioning units 11. The flow rectifiers 12 ensure that cold air flows from the air conditioning units 11 to the cold air aisle at a substantially uniform flow rate. The flow rectifiers 12 may be any material that can create airflow resistance in the path of cold air flowing from the air conditioning units 11 to the cold air aisle. The flow rectifiers 12 may be, for example, filters, punched plates, wire mesh, cloth, or laminates thereof, as well as registers used in air conditioning outlets.

[0024] Fig. 4 is a diagram showing the flow of hot air. Fig. 4 is a side view of the hot air aisle. Furthermore, as shown in Figs. 2 and 4, partition plates 16 are provided at both ends of the hot air aisle and between the top end of the rack row 9 on the hot air aisle side and the ceiling 13 to separate the hot air aisle from the cold air aisle. The partition plates 16 prevent hot air from circulating from the hot air aisle to the cold air aisle.

[0025] As shown in FIG. 4, the air conditioning unit 11 cools the exhaust air of each rack 90 by sucking it in from the ceiling space 14 through an opening provided on the top surface. The air conditioning unit 11 then supplies the cooled air to the server room 1. The cold air supplied to the server room 1 is supplied to the cold air passage via a flow rectifier 12, as shown in FIG. 3. The air conditioning unit 11 is an example of an "air conditioner."

[0026] 5 is a diagram illustrating the position where a thermal distribution imaging device is installed in an embodiment. The thermal distribution imaging device 100 is attached to the underside of the rectifier 12 installed between the upper ends of the rack row 9, with the imaging direction of the thermal camera 110 facing the rectifier 12. In other words, the thermal distribution imaging device 100 is attached so that the spherical surface 121 of the SUS semicircular sphere 120 of the thermal distribution imaging device 100 faces the floor side (downward) of the cold air aisle. By attaching the thermal distribution imaging device 100 in this manner, infrared rays emitted from the front of the rack row 9 are irradiated onto the spherical surface 121 of the SUS semicircular sphere 120, and the temperature distribution of the front of the rack row 9 is reflected on the spherical surface 121 of the SUS semicircular sphere 120. The thermal distribution imaging device 100 can capture the temperature distribution in front of the rack row 9 installed within a 360-degree range around the spherical surface 121 of the SUS hemisphere 120 by using the thermal camera 110. The flow rectifier 12 is an example of a "supply port."

[0027] FIG. 5 also illustrates a ventilation sheet 17 arranged by a sheet holding frame (not shown) so that the longitudinal direction of the cold air aisle and the normal direction of the ventilation sheet 17 are substantially aligned. The width of the ventilation sheet 17 is substantially equal to the width of the cold air aisle (the distance between both ends of the rack row 9). The height of the ventilation sheet 17 is substantially equal to the height of the cold air aisle (the distance from the floor to the flow regulator 12 provided between the upper ends of the rack row 9). The ventilation sheet 17 is preferably breathable and does not obstruct the flow of cold air in the cold air aisle. For example, the sheet described in Japanese Patent No. 5729993 can be used as the ventilation sheet 17. By using such a ventilation sheet 17, the temperature distribution in the cold air aisle space can be reflected in the ventilation sheet 17.

[0028] 6 is an example of a side cross-sectional view of a rack in an embodiment. A rack door 901 formed of a perforated plate with a plurality of holes is provided on the front surface of the rack 90 (the intake side of the information processing devices 91). The rear surface of the rack 90 may be open. A plurality of rack rails extending horizontally are provided vertically on the rack 90. Each of the information processing devices 91 is installed on the rack rails of the rack 90. A plate-shaped blanking panel 902 is provided in front of the rack rails on which no information processing devices 91 are installed to prevent hot air from the hot air aisle from circulating into the cold air aisle. If the blanking panel 902 is heated by the warm air, there is a risk that the heat will be detected by the thermal distribution imaging device 100.

[0029] Therefore, it is preferable to provide a breathable heat shielding sheet 903 on the back surface of the rack door 901. The heat shielding sheet 903 can prevent the heat of the heated blanking panel 902 from being detected by the thermal distribution imaging device 100. For example, "Saran Net" by Kureha Co., Ltd. can be used as the heat shielding sheet 903. Although the heat shielding sheet 903 is provided on the back surface of the rack door 901 in FIG. 6, the heat shielding sheet 903 may also be provided on the front surface of the rack door 901. The heat shielding sheet 903 may be removed from the rack door 901 when imaging with the thermal distribution imaging device 100 is not being performed.

[0030] FIG. 7 is a diagram showing an example of a thermal distribution image captured by a thermal distribution imaging device in an embodiment. To facilitate understanding, FIG. 7 illustrates an example of a region of the thermal distribution image 300 that captures the front of the rack row 9 and a region that captures the surface of the ventilation sheet 17. As can be seen from FIG. 7, in the thermal distribution image 300, the image above where the thermal distribution imaging device 100 is installed (the image of the upper part of the rack row 9) appears wider than the image below (the image of the lower part of the rack row 9). Therefore, the number of pixels depicting the region corresponding to the upper part of the rack row 9 is greater than the number of pixels depicting the region corresponding to the lower part of the rack row 9. In other words, the thermal distribution image 300 can show the heat distribution in the upper part of the rack row 9 with higher resolution than the lower part of the rack row 9. In the thermal distribution image 300, the front of the rack row 9 and the ventilation sheet 17 are captured in a single image. In other words, since the thermal distribution imaging device 100 can capture images over a 360-degree range, it can measure the temperature distribution in front of the rack row 9 and the temperature distribution in the cold air aisle space reflected on the ventilation sheet 17 with a single image capture.

[0031] FIG. 8 is a diagram showing a first example of a planar development of the thermal distribution image shown in FIG. 7. FIG. 8 shows an example of a planar development of the area of the thermal distribution image 300 in which the ventilation sheet 17 is shown. In FIG. 8, arrows are used to schematically indicate the flow of cold air supplied from above the cold air aisle. FIG. 9 is a diagram showing a second example of a planar development of the thermal distribution image shown in FIG. 7. FIG. 9 shows an example of a planar development of the area of the thermal distribution image 300 in which the front of the rack row 9 is shown. By performing planar development in this manner, it becomes possible to analyze in detail the heat distribution in the front of the rack row 9 and the ventilation sheet 17.

[0032] Fig. 10 is a diagram illustrating an example of the system configuration of an air conditioning control system according to an embodiment. In an air conditioning control system 500, a thermal distribution imaging device 100 and a PAC 11 are connected to an air conditioning control device 510. The air conditioning control device 510 is, for example, an information processing device. Fig. 11 is a diagram illustrating an example of the hardware configuration of the air conditioning control device according to an embodiment. The air conditioning control device 510 includes a central processing unit (CPU) 51, a main memory 52, an auxiliary memory 53, and a communication unit 54. The CPU 51, the main memory 52, the auxiliary memory 53, and the communication unit 54 are connected to each other via a connection bus.

[0033] The CPU 51 is also called a microprocessor unit (MPU) or a processor. The CPU 51 may be a combination of a processor and an integrated circuit. This combination is called, for example, a microcontroller unit (MCU), a system-on-a-chip (SoC), a system LSI, or a chipset. In the air conditioning control device 510, the CPU 51 loads a program stored in the auxiliary storage unit 53 into a work area of the main storage unit 52 and controls peripheral devices through the execution of the program. The main storage unit 52 and the auxiliary storage unit 53 are recording media readable by the air conditioning control device 510.

[0034] The main storage unit 52 is exemplified as a storage unit that is directly accessed by the CPU 51. The main storage unit 52 includes a random access memory (RAM) and a read only memory (ROM).

[0035] The auxiliary storage unit 53 stores various programs and various data on a readable and writable recording medium. The auxiliary storage unit 53 is also called an external storage device. The auxiliary storage unit 53 stores an operating system (OS), various programs, various tables, etc. The OS includes a communication interface program that exchanges data with external devices connected via the communication unit 54.

[0036] The auxiliary storage unit 53 is, for example, an erasable programmable ROM (EPROM), a solid state drive (SSD), a hard disk drive (HDD), or the like.

[0037] The communication unit 54 is, for example, an interface for connecting an external device. The air conditioning control device 510 communicates with the PAC 11 and the thermal distribution imaging device 100 via the communication unit 54.

[0038] The air conditioning control device 510 acquires the thermal distribution image 300 from the thermal distribution imaging device 100. The air conditioning control device 510 controls the air conditioning unit 11 based on the acquired thermal distribution image 300.

[0039] For example, the air conditioning control device 510 may analyze the thermal distribution image 300 to calculate the temperature at each location in the cold air aisle, and based on the calculated temperatures at each location in the cold air aisle, instruct the air conditioning unit 11 to increase or decrease the amount of cold air that is sent out by the air conditioning unit 11. Alternatively, for example, the air conditioning control device 510 may analyze the thermal distribution image 300 to detect the highest temperature in the cold air aisle, and control the air conditioning unit 11 based on the detected temperature.

[0040] Here, workers may enter the server room 1 to perform various tasks. The air conditioning control device 510 does not need to control the air conditioning unit 11 while it detects a worker who has entered the server room 1. Furthermore, the air conditioning control device 510 may exclude the vicinity of the entrance / exit door of the server room 1 from the analysis of the thermal distribution image 300 because no racks 90 are installed there.

[0041] <Control flow of air conditioning control system 500> FIG. 12 is a diagram illustrating an example of a control flow of the air conditioning control system according to the embodiment. 2, air conditioning control is performed in the server room 1. An example of the control flow of the air conditioning control system will be described below with reference to FIG.

[0042] In S1, the thermal distribution imaging device 100 is installed in the server room 1. The thermal distribution imaging device 100 is attached to the underside of the flow rectifier 12 provided on the ceiling 13 so that the spherical surface 121 of the SUS semi-sphere 120 faces the cold air aisle side (downward). Furthermore, a ventilation sheet 17 may be placed in the cold air aisle. In S2, a heat shield sheet 903 is provided on the back side of the rack door 901. Note that the procedure of S2 may be performed before S1.

[0043] In S3, the thermal camera 110 of the thermal distribution imaging device 100 installed in S1 starts capturing an image of the SUS hemisphere 120. As described above, the SUS hemisphere 120 reflects the temperature distribution in front of the rack row 9. Therefore, the thermal distribution imaging device 100 can generate a thermal distribution image capturing the temperature distribution in front of the rack row 9 by capturing an image of the SUS hemisphere 120 with the thermal camera 110. The processing from steps S1 to S3 is an example of a "temperature distribution measurement method."

[0044] In S4, the air conditioning control device 510 acquires the thermal distribution image generated in S2 from the thermal distribution imaging device 100. In S5, the air conditioning control device 510 controls the air conditioning unit 11 based on the thermal distribution image acquired in S4.

[0045] <Processing flow of the air conditioning control device 510> Fig. 13 is a diagram showing an example of the processing flow of the air conditioning control device in the embodiment. Fig. 13 is a diagram explaining in more detail the processing of S5 in Fig. 12. Hereinafter, with reference to Fig. 13, an example of the processing flow of the air conditioning control device will be described.

[0046] In S51, the air conditioning control device 510 analyzes the thermal distribution image acquired from the thermal distribution imaging device 100. The air conditioning control device 510 stores in advance in the auxiliary storage unit 53 the area in the thermal distribution image of the entrance / exit door to the server room 1. The air conditioning control device 510 analyzes the thermal distribution image after excluding the area of the entrance / exit door from the acquired thermal distribution image.

[0047] In S52, the air conditioning control device 510 determines whether or not there is a person, including a worker, in the thermal distribution image based on the analysis result in S51. Note that the air conditioning control device 510 may provide other detection means, such as a human presence sensor, in the server room 1 and determine whether or not there is a person based on a detection signal from that detection means, instead of using the thermal distribution image. If a person is detected (YES in S42), the process ends. If no person is detected (NO in S52), the process proceeds to S53.

[0048] In S53, the air conditioning control device 510 controls the air conditioning unit 11 based on the analysis result in S51.

[0049] <Effects of the embodiment> According to this embodiment, the temperature distribution on the intake side of the rack 90 arranged within a 360-degree range around the thermal distribution imaging device 100 is reflected on the spherical surface 121 of the SUS hemisphere 120. The thermal camera 110 photographs the spherical surface 121 of the SUS hemisphere 120, making it possible to photograph the temperature distribution on the intake side of the rack 90 arranged within a 360-degree range around the thermal distribution imaging device 100. Furthermore, according to this embodiment, the temperature distribution can be acquired not as a point but as a surface (as a thermal distribution image), so that a single thermal distribution imaging device 100 can achieve the same effect as when a large number of temperature sensors are installed.

[0050] In this embodiment, the vicinity of the flow rectifier 12 (the upper side of the rack row 9) is Since the flow rate of the cold air supplied from the rack row 9 is high, it is highly likely that the warm air from the hot air aisle will circulate around. In this embodiment, by providing the thermal distribution imaging device 100 near such a flow straightener 12, it is possible to obtain a high-resolution image of the heat distribution above the rack row 9, as described with reference to FIG.

[0051] In this embodiment, a breathable heat shielding sheet 903 is provided on the back surface of the rack door 901. The heat shielding sheet 903 prevents the heat of the heated blanking panel 902 from being detected by the thermal distribution imaging device 100. Therefore, the thermal distribution imaging device 100 according to this embodiment can suppress the influence of the heat from the blanking panel and the servers inside the rack 90, and can more accurately measure the temperature distribution of the cool air supplied to a specified space.

[0052] In this embodiment, the air conditioning unit 11 is not controlled while it is detected that there is a person in the server room 1. By performing such control, it is possible to suppress erroneous detection that a high temperature area detected due to the presence of a person in the server room 1 is due to an insufficient supply of cool air from the air conditioning unit 11, and thus to suppress control of the air conditioning unit 11 based on the erroneous detection.

[0053] <Modification> In the embodiment, the air conditioning unit 11 in the server room 1 supplies cold air to the cold air aisle on the floor. However, the air conditioning unit 11 is not limited to this configuration. For example, an underfloor space may be provided in the server room 1, and a flow rectifier 12 may be provided on the floor of the cold air aisle to connect the underfloor space to the cold air aisle. The air conditioning unit 11 may blow cold air into the underfloor space, thereby supplying cold air to the cold air aisle via the flow rectifier 12 provided on the floor of the cold air aisle. In this case, the thermal distribution imaging device 100 may be attached to the upper surface of the flow rectifier 12 with the imaging direction of the thermal camera 110 facing the flow rectifier 12 provided on the floor of the cold air aisle. In other words, the thermal distribution imaging device 100 may be installed so that the spherical surface 121 of the SUS semisphere 120 faces the cold air aisle (upward). By providing the thermal distribution imaging device 100 in this manner, it is possible to obtain with high precision the thermal distribution in the vicinity of the flow rectifier 12, where the warm air in the hot air aisle is likely to circulate.

[0054] In the embodiment, the ventilation sheet 17 is installed when the thermal distribution image is acquired, but if it is not necessary to measure the temperature distribution in the space of the cold air passage, the installation of the ventilation sheet 17 can be omitted.

[0055] The embodiments and modifications disclosed above can be combined with each other. [Explanation of symbols]

[0056] 1, 1a, 1b: Server room 100: Thermal distribution imaging device 110: Thermal camera 111: Main body 112: Telescope tube 12: Flow rectifier 120: Hemisphere 121: Spherical 13: Ceiling 130: Connection member 14: Attic 14:Work space 15:Floor 151: Under the floor 16: Partition board 17: Ventilated sheet 21: Exterior wall 22:Inner wall 221, 222: Wall part 23: Rack installation space 24:Work space 300: Thermal distribution image 500: Air conditioning control system 510: Air conditioning control device 51:CPU 52: Main memory 53: Auxiliary storage 54: Communications Department 9:Rack row 90: Rack 901: Rack door 902: Blank Panel 903: Heat-shielding sheet 91: Information processing equipment

Claims

1. A method for measuring temperature distribution in a server room in which server racks are arranged with their intake sides facing in a predetermined space, comprising: a step of providing a thermal distribution imaging device including a metallic hemisphere and a thermal camera facing the spherical surface of the hemisphere in a state where the spherical surface faces the predetermined space, in the vicinity of a supply port through which cool air is supplied to the predetermined space and into which warm air exhausted from the exhaust side of the server rack can easily circulate; and acquiring a thermal distribution image of the spherical surface by the thermal camera. Temperature distribution measurement method.

2. A method for measuring temperature distribution in a server room in which server racks are arranged with their intake sides facing in a predetermined space, comprising: a step of providing a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere at a supply port through which cool air is supplied to the specified space, with the spherical surface facing the specified space; and acquiring a thermal distribution image of the spherical surface by the thermal camera, The supply port is formed between the upper ends of the aligned server racks, The supply port is provided with a flow regulator that adjusts the flow rate of the cool air supplied from the air conditioner to the specified space, In the providing step, the thermal distribution imaging device is provided on a lower surface of the flow rectifier so that the imaging direction is directed toward the flow rectifier. Temperature distribution measurement method.

3. A method for measuring temperature distribution in a server room in which server racks are lined up in a predetermined space with their intake sides facing each other, and blanking panels are provided on the intake sides of the server racks to prevent warm air exhausted from the exhaust sides of the server racks from circulating to the intake side, a step of providing a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere in the vicinity of a supply port through which cool air is supplied to the specified space, with the spherical surface facing the specified space; A step of acquiring a thermal distribution image of the spherical surface by the thermal camera; and a step of covering the entire intake side of the server rack between the blanking panel and the thermal distribution imaging device as viewed in the imaging direction with a breathable heat shield sheet before acquiring the thermal distribution image. Temperature distribution measurement method.

4. An air conditioning control system for a server room in which server racks are arranged with their intake sides facing in a predetermined space, an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed near a supply port through which cool air is supplied to the specified space and into which warm air exhausted from the exhaust side of the server rack can easily flow, with the spherical surface facing the specified space; A control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image. Air conditioning control system.

5. An air conditioning control system for a server room in which server racks are arranged with their intake sides facing in a predetermined space, an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed at a supply port through which cool air is supplied to the specified space with the spherical surface facing the specified space; a control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image; The supply port is formed between the upper ends of the aligned server racks, a flow regulator that adjusts the flow rate of the cool air supplied from the air conditioner to the specified space is provided in the supply port; the thermal distribution imaging device is provided on a lower surface of the flow rectifier so that the imaging direction is directed toward the flow rectifier; Air conditioning control system.

6. An air conditioning control system for a server room in which server racks are arranged with their intake sides facing in a predetermined space, an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed near a supply port through which cool air is supplied to the specified space with the spherical surface facing the specified space; a blanking panel provided on the intake side of the server rack to prevent warm air exhausted from the exhaust side of the server rack from circulating to the intake side; a breathable heat shield sheet disposed between the blanking panel and the thermal distribution imaging device when viewed in the shooting direction so as to cover the entire intake side of the server rack; A control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image. Air conditioning control system.

7. the control device suppresses control of the air conditioner while detecting a person in the server room. The air conditioning control system according to any one of claims 4 to 6.

8. The thermal distribution image includes an image of an entrance door provided in the server room. the law of nature, the control device controls the air conditioner while excluding the entrance / exit door from the thermal distribution image. The air conditioning control system according to any one of claims 4 to 7.

9. a server rack with its intake side facing a predetermined space; an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed near a supply port through which cool air is supplied to the specified space and into which warm air exhausted from the exhaust side of the server rack can easily flow, with the spherical surface facing the specified space; A control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image. Server room.

10. a server rack with its intake side facing a predetermined space; an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed at a supply port through which cool air is supplied to the specified space with the spherical surface facing the specified space; a control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image; The supply port is formed between the upper ends of the aligned server racks, a flow regulator that adjusts the flow rate of the cool air supplied from the air conditioner to the specified space is provided in the supply port; the thermal distribution imaging device is provided on a lower surface of the flow rectifier so that the imaging direction is directed toward the flow rectifier; Server room.

11. a server rack facing the intake side of a predetermined space; an air conditioner that supplies cool air to the specified space; a thermal distribution imaging device including a metallic hemisphere and a thermo camera facing the spherical surface of the hemisphere, the thermal distribution imaging device being installed near a supply port through which cool air is supplied to the specified space with the spherical surface facing the specified space; a control device that acquires a thermal distribution image of the spherical surface by the thermal camera and controls the air conditioner based on the acquired thermal distribution image; a blanking panel provided on the intake side of the server rack to prevent warm air exhausted from the exhaust side of the server rack from circulating to the intake side; a breathable heat shield sheet disposed between the blind panel and the thermal distribution imaging device when viewed in the shooting direction so as to cover the entire intake side of the server rack, Server room.

12. A thermal distribution imaging device installed in a server room in which server racks are arranged with their intake sides facing in a predetermined space, A metal hemisphere, a thermal camera whose photographing direction is directed toward the spherical surface of the hemisphere, With the spherical surface facing the predetermined space, the thermal camera is provided near a supply port through which cool air is supplied to the predetermined space and into which warm air exhausted from the exhaust side of the server rack can easily circulate, and the thermal camera takes an image of the spherical surface to generate a thermal distribution image. Thermal distribution imaging device.

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