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Current issue

ELEKTRO 12/2021 was released on December 1st 2021. Its digital version will be available immediately.

Topic: Measurement, testing, quality care

Market, trade, business
What to keep in mind when changing energy providers

SVĚTLO (Light) 6/2021 was released 11.29.2021. Its digital version will be available immediately.

Fairs and exhibitions
Designblok, Prague International Design Festival 2021
Journal Světlo Competition about the best exhibit in branch of light and lighting at FOR ARCH and FOR INTERIOR fair

Professional literature
The new date format for luminaires description

Smart, self-powered ping-pong table

29. 11. 2019 | Tech Xplore | www.techxplore.com

A team of researchers from China and the U.S. has built a smart, self-powered ping-pong table. In their paper published in the journal Nature Communications, the group describes how the table was built and how it powers itself.

As anyone who has ever watched a table-tennis match can attest, it is a game that moves very quickly—in some cases, too quickly for the human eye to see what happens. In professional or Olympic level games, such speed has necessitated the use of electronic sensors that can see rapid events human judges cannot, such as whether a ball hit the top edge or the side edge of the table. The distinction can make a difference in a match.

Smart ping-pong table

But such sensors must be powered by batteries, which, the researchers note, not only have a limited lifetime, but have negative environmental impacts. In this new effort, the researchers have found a new way to power the sensors by embedding triboelectric nanogenerators (TENGs) in the surface of the table, allowing the table to power itself. TENGS, the researchers note, can convert mechanical energy into electricity. Sensors in the smart table convert the mechanical energy of a ball impacts into electricity that is used to power sensors.

Read more at Tech Xplore

Image Credit: NPG Press