Electrical systems in the community

Designed solutions that use electricity to control movement, light and sound are all around us.

Pedestrian crossings have been around a long time like these ones in ancient Pompeii.

We can see a similar design in some of the crossings in our local communities.

Others have been redesigned. 1 3 2

Why was there a need to redesign some pedestrian crossings? 1 3 2 What changes have been made to the design? How does it meet community needs?

Electrical engineers design many items we see or use every day.

At home How do these devices use electrical energy to meet our needs? 2 1 How do these devices use electrical energy to meet our needs? 3

At school How many designed solutions can you find in your classroom that use electrical energy to control movement, light and sound?

There are many examples in our communities. 1 2 3

Brainstorm designed solutions that use electricity to control movement, light or sound. Consider: what need they meet how light, sound and movement contribute to the design.

Attributions Slide Image Attribution 2 Nicholas Kaeser 2014, Brisbane by night – Brisbane www.flickr.com/photos/nicholaskaeser/16248605556/ CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/ 3 Lau Svensson 2011, Pompeii street https://www.flickr.com/photos/lausvensson/8628334363/ CC BY 2.0 creativecommons.org/licenses/by/2.0/ 4 Ash Kyd 2012, Zebra Crossing www.flickr.com/photos/ashkyd/7459291100/ CC BY 2.0 creativecommons.org/licenses/by/2.0/ 5 1 Rowen Atkinson 2007, Stay where you are https://www.flickr.com/photos/scttw/503223329/ CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/ Sankarshan Mukhopadhyay 2009, img_5330.jpg https://www.flickr.com/photos/runa-sankarshan/4110745757 CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/ James 2006, Pedestrian crossing https://www.flickr.com/photos/maebmij/96709053/ CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/ 6 Lau Svensson 2011, Pompeii street https://www.flickr.com/photos/lausvensson/8628334363/ CC BY 2.0 creativecommons.org/licenses/by/2.0/ CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/ 8 Barry 2006, DILODEC06_S02020 https://www.flickr.com/photos/ennor/330522886 CC BY-NC-SA-2.0 creativecommons.org/licenses/by-nc-sa/2.0/ Anthony Agius 2009, New Toaster www.flickr.com/photos/aagius/3558810758 CC BY-NC-ND 2.0 creativecommons.org/licenses/by-nc-nd/2.0/ https://pixabay.com/en/promise-time-clock-fashion-931028/ 10 Ervins Strauhmanis 2014, Security camera https://www.flickr.com/photos/ervins_strauhmanis/14550466174 CC BY 2.0 creativecommons.org/licenses/by/2.0/ Michael Coghlan 2009, Sentinel https://www.flickr.com/photos/mikecogh/3646933368 CC BY-NC-SA-2.0 creativecommons.org/licenses/by-nc-sa/2.0/ Brian Yap (葉) 2007, barrier https://www.flickr.com/photos/yewenyi/1807980410 CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/