Fujitsu's Power Strip Helps Monitor Power Consumption in Office

Apr 6, 2010
Masaru Yoshida, Nikkei Monozukuri
Each outlet of the power strip is equipped with a power sensor.
Each outlet of the power strip is equipped with a power sensor.
[ If it clicks, the expanded picture will open ]
The measured data is transmitted via the USB port on the lateral side of the power strip.
The measured data is transmitted via the USB port on the lateral side of the power strip.
[ If it clicks, the expanded picture will open ]
The status of power consumption can be displayed on a PC.
The status of power consumption can be displayed on a PC.
[ If it clicks, the expanded picture will open ]

Fujitsu Laboratories Ltd developed a power strip equipped with a power sensor that measures electrical energy at each outlet in real time to help figure out how much electricity is being used in an office, etc.

The company expects that the power strip will make its users pay more attention to energy saving by visualizing power consumption. Also, by combining measured data and a scheduler, it is possible to know the amount of wasteful energy consumed in the absence of the user.

Each outlet of the power strip is equipped with a contactless power sensor that has a resolution of 1W and can measure up to 2,000W. Fujitsu Laboratories downsized the sensor to make it fit in the power strip and optimized the shape and position of the sensor's ferrite with magnetic simulation so that it is not influenced by the adjacent outlets.

The measured data is sent to, for example, a LAN network by using a transmitter connected to the USB port on the lateral side of the power strip and monitored on a server or a PC. When Fujitsu Laboratories established a system to visualize power consumption by using the power strip at the company, the power consumption was reduced by about 20%, it said.

The company plans to decide how and when it will commercialize the power strip with Fujitsu Ltd after conducting more tests.