Fluid level and composition sensor
AssigneeTigmill Technologies, LLC
InventorBobby David Strong
Life of this patent
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Abstract
A fluid sensor system comprises a radio frequency transmitter with adjustable output power, a radio frequency detector proximal to the radio frequency transmitter; a constant current source, and a switch coupled between the radio frequency detector and the constant current source. A method of determining the identity of a fluid using the fluid sensor system includes immersing the sensor system in a first fluid, increasing a transmit power of a radio frequency (RF) transmitter of the fluid sensor system until an RF signal is detected by a RF detector of the fluid sensor system, and determining the transmit power of the RF transmitter that first resulted in a detection of the RF signal by the RF detector to be the transmit power that is required for detecting the RF signal in the first fluid.
Claims7
A fluid sensor system, comprising:
- a fluid sensor, comprising:
- a radio frequency transmitter, configured to output radio frequency signals at adjustable levels of transmit power into a fluid;
- a radio frequency detector proximate to the radio frequency transmitter, configured to detect the radio frequency signals transmitted by the radio frequency transmitter into the fluid;
- a first constant current source;
- and
- a first switch coupled between the radio frequency detector and the first constant current source, wherein the fluid sensor including the radio frequency transmitter, the radio frequency detector, the first constant current source, and the first switch, is configured to be submerged as a whole into a fluid;
- and
- a microcontroller coupled to the radio frequency transmitter, coupled to the radio frequency detector, and coupled to the first constant current source.
Dependencies are inferred from the claim text.