Multipoint Temperature Measurement Technology using Optical Fiber

Energy consumption in data centers is increasing dramatically as the information technology (IT) infrastructure provides higher speeds and capacities and the deployment of IT equipment expands. In a data center, the percentage of energy consumed by air conditioning is high at about 40%, and reducing this energy use has become a major issue against the background of global warming. To make detailed temperature measurements with the aim of achieving energy-efficient data centers, we have developed multipoint measuring technology to increase the spatial resolution by more than twice that of existing technology. This uses a new algorithm for correcting signal processing output from temperature-distribution measuring equipment that utilizes Raman-scattering light in an optical fiber. We have also developed technology for fast and reliable laying of optical fiber on server racks. These technologies enable accurate and detailed measurement of temperature distributions in data centers, which should in turn lead to optimal air conditioning and an energy-saving effect.