Lighting Control System Using Human Location Data for Energy Saving

1. Introduction Mitsubishi Electric offers solutions centered on security , under the brand name DIGUARD, for various customer problems in buildings, factories, public facilities , and so on. As an example, this paper describes the development of an energy saving system that coordinates security and lighting equipment. In recent years, as evidenced by revisions to the Energy Saving Law and Tokyo Metropolitan Ordinances, the importance of energy saving measures in offices is increasing. Particularly since the accident at the Fuku-shima Dai-ichi Power Station of Tokyo Electric Power Company, there has been a shortage of electricity, and so there is an urgent need for measures to save electricity in offices, and for maintaining and improving production and services using less electric power. One way to save electricity and energy is to use low-power devices such as LED lighting and inverter control devices, but it is also important to reduce unnecessary electricity consumption. Accordingly, Mitsu-bishi Electric is developing a system that uses information concerning the locations of people (" who " is located " where ") in order to minimize the unnecessary use of lighting and air conditioning equipment, thereby saving electricity and energy. This paper describes a system coordinated with lighting equipment, which is proposed jointly with Mitsubishi Jisho Sekkei Inc. First, a location management system to identify the locations of people in a building, and a lighting control system that utilizes the location information, are described. Tests carried out on these coordinated systems, and the results, and then described.