HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Blogs
Gadget Freak
Gadget Freak Case #237: Dishwasher Indicator Eases Unloading
4/9/2013

< Previous   Image 2 of 2   

Here are the mounting positions of the LEDs and the infrared proximity sensoron the outside of the diskwasher's kick plate.
Here are the mounting positions of the LEDs and the infrared proximity sensor
on the outside of the diskwasher's kick plate.

< Previous   Image 2 of 2   

Return to Article

View Comments: Newest First|Oldest First|Threaded View
Page 1/4  >  >>
mrdon
User Rank
Gold
Re: Usually
mrdon   6/18/2013 6:11:34 PM
NO RATINGS
Cadman-LT

Your are so correct, the list does go on. I think the key to the wireless concept is to have receivers attached to all household items family engaged with related to chores. The household chore monitoring system will send tweets to a smartphone when the item has been touched by a family member.

Cadman-LT
User Rank
Platinum
Re: Usually
Cadman-LT   6/18/2013 7:49:22 AM
NO RATINGS
mrdon, I agree. If you have a house full of people(kids) with chores to do, how do you know they actually did them. Maybe more devices are needed? Maybe one to see if someone lifted the trashcan lid to take the trash out...was the vaccuum actually used.....was the cat litter changed? the list goes on.  I know it does. :)

mrdon
User Rank
Gold
Re: Usually
mrdon   5/22/2013 2:54:45 PM
NO RATINGS
Cadman-LT,

In that case your right. Maybe, a wireless solution is needed to get everyone to participate in the daily grind of household chores! Sounds like a Gadget Freak design concept/article!!! LOL

Cadman-LT
User Rank
Platinum
Re: Usually
Cadman-LT   5/17/2013 11:43:45 PM
NO RATINGS
mrdon, only works with an empty house!!!

mrdon
User Rank
Gold
Re: Usually
mrdon   5/14/2013 12:13:45 AM
NO RATINGS
Cadman-LT, Talk about a simple solution to a common problem and no electronics required. Works for me as well! LOL

Cadman-LT
User Rank
Platinum
Re: Usually
Cadman-LT   5/13/2013 1:16:48 PM
NO RATINGS
mrdon, I can understand that, especially with a family where you never know if someone has already done them or not. I don't have that problem however, if I don't do it it doesn't get done. lol

JimT@Future-Product-Innovations
User Rank
Blogger
Re: All the dishes?
JimT@Future-Product-Innovations   5/9/2013 9:39:00 AM
NO RATINGS
I see now you are rationally thinking this through.  I'd want to bounce ideas off you if I were actually attempting to do this!  Great point.

mrthekid
User Rank
Iron
Nice but not foolproof
mrthekid   5/2/2013 8:35:15 AM
NO RATINGS
While this idea is nice it is in no way foolproof.  First the sensor is a proximity sensor therefore as someone noted the software is programmed such that if the door is opened some duration of time (I think it was ~4.65 minutes) then the program would assume that all the dishes have been emptied otherwise it would detect whenever someone was in the proximity of the DW.  Well if one thinks about this, it isn't very robust.  Lets say your teenager is unloading the dishes and his/her iPhone rings just when they start unloading, well of course they will answer.  They talk to their buddy for 5 minutes then come back and shut the DW door because they are in a hurry leaving a partially loaded dishwasher with the system now saying it is fully empty.  The next person comes along with a dirty glass and sees that the DW can accept dirty dishes so they put the glass in.  Now you have a DW with some clean and some dirty dishes. 

If the designer did a DFMEA on his system he/she would have caught this and not used a proximity sensor with a time feature because it has a very high probability of failure.  A better way to do this might be to use load sensors on the legs of the dishwasher (as someone noted) with a program that sets the weight of the DW with no dishes but it must also be after a wash cycle because there is always some residual water in the sump that adds some mass.  Knowing that value, the program could then determine when the DW is empty of dishware.  Of course even this isn't foolproof because the sensors have some tolerance which could make the system inaccurate to some degree, however I believe this would be a more precise way to accomplish this task.  The other real question that must be asked is what is the cost of said system and is it something the consumer would be willing to pay for.  Some thoughts from a DW engineer.

wirkmanv
User Rank
Iron
Re: Dishwasher Indicator
wirkmanv   5/1/2013 5:51:02 PM
NO RATINGS
That is similar to the method (a sign) we use at home except we have 2 Post-It notes (Clean & Dirty).  If I only take out a few dishes I leave the sign up.  When the dishwasher is empty there is no sign and when we put in any dirty dishes the dirty post-it note goes up.  Easy.

jtanalog
User Rank
Iron
Dishwasher Indicator
jtanalog   5/1/2013 3:54:12 PM
NO RATINGS
Sheeesh! All you need is the readily available magnetic sign that says "Dishes are Dirty" in one orientation, "Dishes are Clean" in the other. -Jim Thompson

Page 1/4  >  >>
Partner Zone
More Blogs from Gadget Freak
This Gadget Freak Review looks at an affordable plug-and-play printer, a 3D printer that was hacked by a group of French design students to create real tattoos, and an analog camera that was built using 3D-printed and laser-cut parts.
What youíll find in this Technology Roundup is the best of the best Gadget Freak projects, as voted on by you -- our loyal readers.
We look at a wearable device that uses an adhesive electrode and headband to help reduce migraines, as well as a plug-and-play outlet cover that replaces traditional night lights.
Al Linke's animated weather display uses a Rasberry Pi to periodically pull weather conditions from the Internet and then displays a corresponding animation on an LED display.
This Gadget Freak review looks at a personal motion tracking device that uses Bluetooth a DIY solar phone charger that is built in a mint tin and only costs $7 to build.
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service