The invention discloses an on-line oil particle
pollution degree detection sensor based on
optical sensing. The input end of a 1*3
optical coupler of the sensor is connected with a
light source through an
optical fiber, the output end of the 1*3
optical coupler is divided into three paths, and the first path is sequentially connected with a first incidence
optical fiber, a first self-focusing lens, a first reference
optical path oil
pool, a fourth self-focusing lens, a first emergence
optical fiber and a first
optical detector; or the input end of a first 1*2
optical coupler of the sensor is connected with a
first light source through an optical
fiber, the output end of the first 1*2 optical coupler is divided into two paths which are respectively connected with a first incidence optical
fiber and a second incidence optical
fiber, and the first path of first incidence optical fiber, first self-focusing lens, reference
optical path air
pool, third self-focusing lens, first emergence optical fiber and first
optical detector are sequentially connected. By adopting a multi-channel
system, different influences on colors of different trades and batch numbers of lubricating oil are corrected, and the influence on measurement
light source and light path drift is modified.