Fluid property sensor and fluid particle sensor

A system for sensing one or more properties of a fluid, comprising:

• a fluid sensor;
• a data collection service;
• a database;
• and
• an artificial intelligence model;
• wherein the data collection service receives sensed data of a fluid from the fluid sensor and stores the data in the database;
• wherein the artificial intelligence model includes a machine learning algorithm that is trained to determine a property of the fluid by analysis of data related to the fluid in light of analysis of data related to one or more previously-tested fluids.

A method for sensing a property of a fluid, comprising:

• a) generating an AC voltage signal at a frequency;
• b) exciting a driving element of a sensing unit by the voltage signal;
• c) sensing a complex impedance of the fluid using a sensing element;
• d) receiving a sensed signal from the sensing element;
• e) performing signal processing on the sensed signal;
• and
• f) repeating steps a-e across a range of frequencies to obtain a fingerprint of the fluid.