Research on the Output Characteristics of Microfluidic Inductive Sensor

Table 1

Listing of oil particle detection methods.

Method	Working principle	Features	Ref.
Optical	Light blocking or; light scattering	Sensitive but easy to be interfered by air bubbles and oil oxidation	[11–13]
Acoustic	Reflection of sound waves	Easy to be interfered by background noises and temperature	[14, 15]
Capacitive	Dielectric difference	Sensitive but easy to be interfered by water content and acidity	[16, 17]
Inductive	Magnetic flux change	Able to distinguish metal particles	[4–6, 18]