The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Jun. 16, 2016
Akwel SA, Champfromier, FR;
Régis Munoz, Saint Rambert d'Albon, FR;
AKWEL SA, Champfromier, FR;
Abstract
A measurement device has two electrodes in the liquid forming a capacitor the capacitance of which depends on the height of the liquid, a microcontroller connected to an electrode and having a capacitance determination circuit for determining first and second values of the capacitance of the capacitor respectively during charging and discharging of the capacitor, an oscillator circuit for generating signals at a reference frequency when the electrodes are not connected to the microcontroller, then at a variable frequency dependent on the height of the liquid when the electrodes are connected to the microcontroller. The microcontroller further includes a programmable logic device configured into a comparator circuit, and a frequency determination circuit connected to the programmable logic device so as to determine the variable frequency from the reference frequency and from the signals of the programmable logic device.