Patent ID: 11898892
Assignee: ALOFT SENSOR TECHNOLOGIES LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A method of operating a system for measuring a fluid level, the method comprising the steps of:
floating at least one remote float device on a surface of a fluid to be measured, the at least one remote float device comprising at least one radio-frequency transceiver configured to transmit and receive radio-frequency (RF) signals;
positioning at least one anchor device at a fixed location over the surface of the fluid to be measured, the at least one anchor device comprising at least one radio-frequency transceiver configured to transmit and receive RF signals;
capturing transmission and reception timestamps of the RF signals transmitted between the at least one anchor device and the at least one remote float device;
exchanging the transmission and reception timestamps between the at least one anchor device and the at least one remote float device using two-way ranging to calculate a time-of-flight of the RF signals; and
calculating a distance between each at least one anchor device and the at least one remote float device based upon the time-of-flight of the RF signals.