Vacuum cleaner blocked pipe and/or robbag full sensor

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Some domestic vacuum cleaners on the market use a simple spring loaded
mechanical gadget to indicate the blocked pipe and/or full bag. I do beleive
some slightly more expensive or new generation vacuum cleaners use some sort
of elecronic sensor for this.

Do you know any sensor to detect blocked vacuum pipe and/or full dust bag in
a vacuum cleaners? (Part number, specs, suppliers etc?)



Re: Vacuum cleaner blocked pipe and/or robbag full sensor


"Mark Holvek" <mh> wrote in message
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The simple trick I can think of is to monitor motor speed which will
increase when there is a blockage. Hall effect sensors come and an AVR Atiny
microcontroller come to mind.

TC



Re: Vacuum cleaner blocked pipe and/or robbag full sensor


Use the simple spring loaded mechanical gadget.  This is a vacuum
indicator.  When the hose gets plugged, vacuum within the hose
increases because there is less of a hole to suck atmosphere in to.
Put a sensor of some sort on this indicator.  maybe a simple
microswitch, magnetic switch.


Mark Holvek wrote:
;Some domestic vacuum cleaners on the market use a simple spring loaded

;mechanical gadget to indicate the blocked pipe and/or full bag


Re: Vacuum cleaner blocked pipe and/or robbag full sensor



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Perhaps they use a crude differential pressure gauge?

Re: Vacuum cleaner blocked pipe and/or robbag full sensor



"Mark Holvek" <mh> wrote in message
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beleive
sort
in

There could be nothing simpler than a manometer!

r
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Re: Vacuum cleaner blocked pipe and/or robbag full sensor


On Thu, 20 Oct 2005 11:12:59 +1300, "Roger Dewhurst"

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Thats the word i was looking for. Often found in HVAC filters.

Re: Vacuum cleaner blocked pipe and/or robbag full sensor



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Sounds like the name of one of those strength testers at carnivals/whatever
.. Man-O-Meter!


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