Patent ID: 11946467
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F

Claim 11:
12. A system, comprising:
a fluidic circuit including a peristaltic pump and a tube;
measuring circuitry configured to measure a flow of fluid inside the tube moved by the peristaltic pump, the measuring circuitry including:
electrodes coupled to the tube, and configured to detect an electrostatic charge variation;
a signal processing circuitry coupled to the electrodes, and configured to generate an electrical charge variation signal based on the electrostatic charge variation; and
a processor coupled to the signal processing circuitry, and configured to:
determine flow information for the fluid based on frequency characteristics of the electrical charge variation signal; and
determine a type of the fluid based on amplitude values of harmonics of the electrical charge variation signal; and

a controller configured to control operation of the system based on the flow information.