Abstract: A temperature distribution measurement apparatus includes a laser light source optically connected to an optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to obtain a true measured temperature distribution by performing correction calculation using a transfer function on a temporary measured temperature distribution obtained based on an output from the photodetector. The temperature distribution measurement unit stores therein data on a transfer function set for each entire length of the optical fiber and for each longitudinal position in the optical fiber. Then, when the length of the optical fiber is changed, the temperature distribution measurement unit changes the transfer function to be used in the correction calculation by using the data on the transfer function.

Abstract: An abnormality detection system includes an optical fiber, a backscattered light detection unit, and a data processing unit. The detection unit is connected to one end and the other end of the optical fiber and configured to acquire a first intensity distribution of backscattered light by causing light to enter the optical fiber from the one end, and to acquire a second intensity distribution of backscattered light by causing light to enter the optical fiber from the other end. The processing unit is configured to calculate the product of a value obtained by applying a first FIR filter to the first intensity distribution, and a value obtained by applying a second FIR filter to the second intensity distribution, for each of locations on the optical fiber in the length direction thereof, and to determine whether or not abnormality is present based on the result of the calculation.

Abstract: A temperature distribution measurement system includes an optical fiber, a laser light source optically connected to the optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to perform correction calculation using a transfer function on a measured temperature distribution obtained from an output from the photodetector. The temperature distribution measurement unit acquires an actual temperature distribution in a location where the optical fiber is laid and determines appropriateness of the transfer function by computing a difference between the measured temperature distribution after the correction and the actual temperature distribution.

Abstract: An abnormality detection system includes an optical fiber, a backscattered light detection unit, and a data processing unit. The detection unit is connected to one end and the other end of the optical fiber and configured to acquire a first intensity distribution of backscattered light by causing light to enter the optical fiber from the one end, and to acquire a second intensity distribution of backscattered light by causing light to enter the optical fiber from the other end. The processing unit is configured to calculate the product of a value obtained by applying a first FIR filter to the first intensity distribution, and a value obtained by applying a second FIR filter to the second intensity distribution, for each of locations on the optical fiber in the length direction thereof, and to determine whether or not abnormality is present based on the result of the calculation.

Abstract: An abnormality detection system includes an optical fiber, a backscattered light detection unit, and a data processing unit. The detection unit is connected to one end and the other end of the optical fiber and configured to acquire a first intensity distribution of backscattered light by causing light to enter the optical fiber from the one end, and to acquire a second intensity distribution of backscattered light by causing light to enter the optical fiber from the other end. The processing unit is configured to calculate the product of a value obtained by applying a first FIR filter to the first intensity distribution, and a value obtained by applying a second FIR filter to the second intensity distribution, for each of locations on the optical fiber in the length direction thereof, and to determine whether or not abnormality is present based on the result of the calculation.

Abstract: A power measurement system includes: a power temperature converter attached to a power supply line of an electric instrument and having a temperature changed corresponding to a current flowing through the power supply line; a temperature measurement apparatus configured to measure the temperature of the power temperature converter; and an analyzer configured to analyze power consumed by the electric instrument by using a measurement result of the temperature of the power temperature converter obtained by the temperature measurement apparatus.

Abstract: A temperature distribution prediction method of predicting a predetermined temperature distribution in an air conditioning system, the air conditioning system including an air conditioner for supplying temperature-adjusted air into a room where racks in which electronic apparatuses are accommodated are installed; and air blowers for transferring the air supplied from the air conditioner to an intake side of the racks, the method includes: measuring the temperature distribution for actual conditions varying the operating situations of the air blowers; and predicting the temperature distribution for conditions of non-measurement for the air blowers based on the measured values.

Abstract: An abnormality detection system includes an optical fiber, a backscattered light detection unit, and a data processing unit. The detection unit is connected to one end and the other end of the optical fiber and configured to acquire a first intensity distribution of backscattered light by causing light to enter the optical fiber from the one end, and to acquire a second intensity distribution of backscattered light by causing light to enter the optical fiber from the other end. The processing unit is configured to calculate the product of a value obtained by applying a first FIR filter to the first intensity distribution, and a value obtained by applying a second FIR filter to the second intensity distribution, for each of locations on the optical fiber in the length direction thereof, and to determine whether or not abnormality is present based on the result of the calculation.

Abstract: A temperature measurement system includes an optical fiber, a temperature distribution measurement apparatus, and a data processing apparatus. The temperature distribution measurement apparatus is configured to detect backscattered light by causing light to enter the optical fiber, and acquire the temperature distribution of the optical fiber in the length direction thereof based on the result of the detection. The data processing apparatus is configured to store therein the temperature distribution acquired by the temperature distribution measurement apparatus, perform signal processing on a difference temperature distribution obtained by computing the difference between a current temperature distribution and a past temperature distribution, and determine whether or not abnormality is present based on the result of the signal processing.

Abstract: An abnormality detection system includes an optical fiber, a Raman scattered light detection unit, and a data processing unit. The detection unit is configured to detect Stokes light and anti-Stokes light which are generated in the optical fiber and to output data on the intensity distribution of the Stokes light in the optical fiber in the length direction thereof and data on the intensity distribution of the anti-Stokes light in the optical fiber in the length direction. The processing unit is configured to calculate the product of a value obtained by applying an FIR filter to the intensity distribution of the Stokes light, and a value obtained by applying the FIR filter to the intensity distribution of the anti-Stokes light for each of locations on the optical fiber in the length direction, and to determine whether or not abnormality is present based on the result of the calculation.

Abstract: A temperature distribution measurement system includes an optical fiber, a laser light source optically connected to the optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to perform correction calculation using a transfer function on a measured temperature distribution obtained from an output from the photodetector. The temperature distribution measurement unit acquires an actual temperature distribution in a location where the optical fiber is laid and determines appropriateness of the transfer function by computing a difference between the measured temperature distribution after the correction and the actual temperature distribution.

Abstract: A temperature distribution measurement apparatus includes a laser light source optically connected to an optical fiber, a photodetector configured to detect light backscattered in the optical fiber, and a temperature distribution measurement unit configured to obtain a true measured temperature distribution by performing correction calculation using a transfer function on a temporary measured temperature distribution obtained based on an output from the photodetector. The temperature distribution measurement unit stores therein data on a transfer function set for each entire length of the optical fiber and for each longitudinal position in the optical fiber. Then, when the length of the optical fiber is changed, the temperature distribution measurement unit changes the transfer function to be used in the correction calculation by using the data on the transfer function.

Abstract: An air volume adjustment device is located at a vent for connecting an equipment installation area, where a rack for housing computers is installed, to a free access floor provided below a floor of the equipment installation area and supplied with air from an air conditioner. The air volume adjustment device includes an air volume adjustment sheet provided with an opening to allow passage of air, a first roll connected to one end portion of the air volume adjustment sheet and made capable of reeling in the air volume adjustment sheet, and a second roll located away from the first roll, connected to another end portion of the air volume adjustment sheet, and made capable of reeling in the air volume adjustment sheet.

Abstract: A body flow path in a first housing having an MPU element communicates with an inner flow path and outer flow path formed in an inner heat-dissipating board and an outer heat-dissipating board, respectively, and a pump drives a cooling liquid to circulate in these flow paths. A beam is arranged between a pivot provided in a second housing and a pivot provided in the inner heat-dissipating board, a beam is arranged between the pivot of the inner heat-dissipating board and a pivot provided in the outer heat-dissipating board, and the inner heat-dissipating board and the outer heat-dissipating board are movable to the second housing. According to the operation of opening the second housing, a distance between the second housing and the inner heat-dissipating board, and a distance between the inner flow path and the outer flow path are increased.

Abstract: A pattern is formed with an insulative resin on a bonding face of a silicon chip, which is a heat generating element, and a pattern is formed with the insulative resin on a bonding face of a heat sink, which is a heat dissipating element, in alignment with the insulative resin parts formed on the silicon chip. The silicon chip and the heat sink are bonded to each other via a heat transfer sheet. The silicon chip and the heat sink are bonded to each other by a metal to form metal connection portions in a region where no insulative resin parts are formed, while the silicon ship and the heat sink are bonded to each other by a resin to form resin connection portions in a region where the insulative resin parts are formed.

Abstract: There is provided a thermal conductivity sheet capable of lowering the thermal resistance value of the joint surface more than before in addition to easiness to use, and an electronic device to which the thermal conductivity sheet is applied. Load is applied to the thermal conductivity sheet having a prescribed thickness placed between CPU 10 that is the heat generation parts and the heat sink 11 that is the heat radiation parts. The thermal conductivity sheet has hardness wherein intervals between CPU 10 that is the heat generation parts and the heat sink 11 that is the heat radiation parts narrow more than the prescribed thickness by either of load within the range from 0.01 kgf/cm2 to 5.0 kgf/cm2 with tightening of screw.

Abstract: Electronic components differing in height (a CPU 2a, a capacitor 2b, and coil elements 2c) are mounted on a printed circuit board 1. A heat-absorbing member 3 is provided above the printed circuit board 1 in such a way that the member 3 contacts not only the top surface of the CPU 2a that is the shortest but the sides of the capacitor 2b and the coil elements 2c. To circulate a cooling medium, a flow path 4 is formed in the heat-absorbing member 3. Heat generated at the CPU 2a is transmitted from its top surface to the cooling medium in the flow path 4 via the heat-absorbing member 3; heat generated at the capacitor 2b and the coil elements 2c is transmitted from their sides to the cooling medium in the flow path 4 via the heat-absorbing member 3.

Abstract: A body flow path in a first housing having an MPU element communicates with an inner flow path and outer flow path formed in an inner heat-dissipating board and an outer heat-dissipating board, respectively, and a pump drives a cooling liquid to circulate in these flow paths. A beam is arranged between a pivot provided in a second housing and a pivot provided in the inner heat-dissipating board, a beam is arranged between the pivot of the inner heat-dissipating board and a pivot provided in the outer heat-dissipating board, and the inner heat-dissipating board and the outer heat-dissipating board are movable to the second housing. According to the operation of opening the second housing, a distance between the second housing and the inner heat-dissipating board, and a distance between the inner flow path and the outer flow path are increased.

Abstract: A body flow path in a first housing having an MPU element communicates with an inner flow path and outer flow path formed in an inner heat-dissipating board and an outer heat-dissipating board, respectively, and a pump drives a cooling liquid to circulate in these flow paths. A beam is arranged between a pivot provided in a second housing and a pivot provided in the inner heat-dissipating board, a beam is arranged between the pivot of the inner heat-dissipating board and a pivot provided in the outer heat-dissipating board, and the inner heat-dissipating board and the outer heat-dissipating board are movable to the second housing. According to the operation of opening the second housing, a distance between the second housing and the inner heat-dissipating board, and a distance between the inner flow path and the outer flow path are increased.

Abstract: Electronic components differing in height (a CPU 2a, a capacitor 2b, and coil elements 2c) are mounted on a printed circuit board 1. A heat-absorbing member 3 is provided above the printed circuit board 1 in such a way that the member 3 contacts not only the top surface of the CPU 2a that is the shortest but the sides of the capacitor 2b and the coil elements 2c. To circulate a cooling medium, a flow path 4 is formed in the heat-absorbing member 3. Heat generated at the CPU2a is transmitted from its top surface to the cooling medium in the flow path 4 via the heat-absorbing member 3; heat generated at the capacitor 2b and the coil elements 2c is transmitted from their sides to the cooling medium in the flow path 4 via the heat-absorbing member 3.