Method and device for monitoring the filling level of a medium in a container
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Level sensor and associated control circuit, in particular for a filter for vehicles
US9109938B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109938-B2 |
| Application number | US-201013322411-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2010 |
| Priority date | May 26, 2009 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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A sensing device includes at least one electrode pair ( 2, 3, 4 ) and one sensing circuit ( 140 ) connected to the electrode pair ( 2, 3, 4 ). The sensing circuit ( 140 ) switches the value of its own output voltage when a substance establishes contact across the electrodes ( 2, 3, 4 ). The device further includes one output circuit ( 180 ) connected to the output of the sensing circuit ( 140 ) and adapted to provide an output signal (s 7 ) representative of the presence of a substance across the electrode pair ( 2, 3, 4 ). The device also allows the output signal to take different voltage and/or current and/or frequency values, in particular such that values can be discerned which are representative of the presence or level of substances and/or representative of faults of the device.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sensing device, comprising: an electrode pair configured to be positioned within a substance, a voltage being established between the electrodes when a substance establishes contact across said electrode pair, the voltage being dependent on at least a type of the substance; a sensing circuit connected to said electrode pair and having an output, the sensing circuit being configured to switch the value of the voltage at the output when the substance…
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Physics · mapped topic
- G01F23/244Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9109938B2 cover?
- A sensing device includes at least one electrode pair ( 2, 3, 4 ) and one sensing circuit ( 140 ) connected to the electrode pair ( 2, 3, 4 ). The sensing circuit ( 140 ) switches the value of its own output voltage when a substance establishes contact across the electrodes ( 2, 3, 4 ). The device further includes one output circuit ( 180 ) connected to the output of the sensing circuit ( 140 )…
- Who is the assignee on this patent?
- Molinaro Marco, Zorzetto Mauro, Colombo Paolo, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G01F23/244. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).