PROTOTYPING, INTERACTION DESIGN, ARDUINO, ELECTRICAL ENGINEERING


Goal

A Working Unit in Usability Test

It is the first glass door refrigerator with interior lighting that could be controlled by foot without opening the door. Right now the process is still confidential. It is in the 2017 KBIS Show. You can see the function details on CNET or ELECTROLUX.

Role: Prototyping, Interaction

As seen on

Features

Auto Light On Function

This refrigerator equips with an Auto-Light function. By simply placing one foot at the bottom center in front of the refrigerator, the interior lights will illuminate. It is convenient for you to view the items in your refrigerator without opening the door.

note:If you open the door, the interior lights will illuminate as usual, until the door is closed.

You have the option of deactivating this function and/or changing settings.

Deactivating the Auto-Light-On Function

1. Step one foot on the blue light on the floor (interior lights should turn on) and hold your foot there (about 10 seconds) until you see the interior lights go off;

2. Then remove your foot;

3. Step your foot back to the same spot and hold there (about 3 seconds) until you see the blue light on the floor go off;

4. Then you may remove your foot.

Changing the Auto-Light Duration Setting

1. Step one foot on the blue light on the floor (interior lights should turn on) and hold your foot there (about 10 seconds) until you see the interior lights go off;

2. Then remove your foot;

3. Step one foot on the blue light and quickly remove foot;

4. Then repeat 2 more times. you will see the interior lights turn back on. The duration setting has been changed. To change the setting back to 30 seconds, simply repeat the steps above.

The Process


How

How it is built?

Early experiments:

Arduino

Many iteration have been run through to find the best solution, in order to rapidly prototype the interaction concept, we choose a relay shield and Arudino Board.

Left

IR Break Beam sensor is in use. Two LEDS represent interior light and projector light.

Right

Schematic

Final Prototype

When we were buidling the final prototype, we came across a critical problem how a 5 V Arduino Board can control a 110 V unit.

Final Prototype

Installation