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US 2010/0058844 A1Published application
Ethanol concentration sensor
OwnerYingjie Lin, Carlos A. Buelna +1inventors
InventorsYingjie Lin, Carlos A. Buelna, Carlos A. Urquidi
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Abstract
A level of fluid in a container is determined as is a capacitance associated with the fluid. The capacitance and level are used to determine a concentration of ethanol in the fluid.
Claims16
Sensor, comprising:
- at least a first sensing electrode;
- first structure associated with the first sensing electrode and together with the first electrode defining first and second capacitances;
- at least a second sensing electrode;
- second structure associated with the second sensing electrode and together with the second sensing electrode defining third and fourth capacitances;
- and
- circuit measuring the capacitances and adding the capacitances together, a value including a sum of all four capacitances being correlatable to an ethanol concentration in fluid in which the electrodes are disposable.
3 more elements
Sensor comprising:
- plural electrodes;
- circuit configured to receive signals from the electrodes, the circuit configured to execute a first operation using the signals to determine a level of fluid in a chamber in which the electrodes can be disposed, the circuit configured to execute a second operation using the signals to determine an ethanol concentration in the fluid.
Method, comprising:
- determining a level of fluid in a container;
- determining a capacitance associated with the fluid;
- and
- using the capacitance and level, determining a concentration of ethanol in the fluid.
1 more element
Dependencies are inferred from the claim text.