US 11,796,376 B2
Fluid level and composition sensor
Bobby David Strong, Sachse, TX (US)
Assigned to Tigmill Technologies, LLC, Farmers Branch, TX (US)
Filed by Tigmill Technologies, LLC, Farmers Branch, TX (US)
Filed on Jan. 24, 2022, as Appl. No. 17/648,751.
Application 17/648,751 is a continuation of application No. 15/821,520, filed on Nov. 22, 2017, granted, now 11,231,310.
Claims priority of provisional application 62/425,960, filed on Nov. 23, 2016.
Prior Publication US 2022/0146299 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01F 23/284 (2006.01); G01N 23/10 (2018.01); G01N 23/06 (2018.01); G01F 23/263 (2022.01); G01N 33/28 (2006.01); G01F 23/04 (2006.01); G01F 23/24 (2006.01)
CPC G01F 23/284 (2013.01) [G01F 23/04 (2013.01); G01F 23/245 (2013.01); G01F 23/263 (2013.01); G01N 23/06 (2013.01); G01N 23/10 (2013.01); G01N 33/2847 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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, 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 is configured to be submerged as a whole into the fluid; and
a microcontroller coupled to the fluid sensor by a mono-conductor cable.