Ubiquitous Power Supply Technology for IoT Devices
Ubiquitous Power Supply Technology for IoT Devices
We have developed an energy harvesting technology that can supply mW-order electrical power by attaching it to an electric wire carrying an alternating current. A magnetic field that oscillates with the same period as the current is formed near the wire, and a permanent magnet placed there receives the force and vibrates perpendicular to the wire. The kinetic energy is converted into electric power through the piezoelectric effect. The most significant feature of this technology is that it can easily generate electric power as large as 1 mW by simply placing the device close to the electric wire.
- Affiliation:
- Osaka Metropolitan University
Graduate School of Engineering
- Representative:
- Takeshi Yoshimura
Associate Professor,
Osaka Metropolitan University
Graduate School of Engineering,
Department of Physics and Electronics
Takeshi Yoshimura PhD
D. Yoshimura has completed his doctoral program in Engineering, Osaka Prefecture University in October 1999. After working as a postdoctoral fellow at Pennsylvania State University, Osaka Prefecture University, the Japan Society for the Promotion of Science, an assistant professor at Osaka Prefecture University and has been an associate professor since April 2010.
SOCIALSocial Implementation
Ideal Power Supply Technology for Large-Scale Facilities and Infrastructure Inspection Systems
Today, many places such as infrastructure and facilities require monitoring of the condition of equipment, as things are aging and natural disasters are becoming more severe. This technology can operate in any location, including outdoors and in liquids, as long as there are power lines from the power grid to the home. It is highly suitable as the ubiquitous power source required for IoT-based inspection and monitoring systems for large-scale offices and infrastructure.
ORIGINALITYUniqueness, Passion for Development
Electrical Power as much as mW Can Be Obtained with a Small Device. Parallel and 3-Phase Wires Applicable to Parallel and 3-Phase Wires as Well
Several products based on current sensors have been developed as elements that extract power from electrical wires without contact, but the technology we offer is unique in that it can generate power from multiple wires, including parallel and 3-phase wires and wires attached to walls. Other advantages are that there is no risk of ignition even in case of rare malfunction and an output voltage of 5-10 V can be easily obtained with a small device as little as 10 g.
VISIONDream, Outlook, Business Image
Versatile Applications for Remote Monitoring at Production Facilities and Weather Observation, etc.
The first target is to supply power for IoT devices. Other possible applications are weather observation using power grids and power supplies for Bluetooth. Furthermore, since it can detect currents in parallel and 3-phase wires, for which the conventional clamp meter cannot be used, we expect it would work as a wireless power sensor in combination with the power generation function.
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