On-line oil monitoring sensor based on double light paths
An oil monitoring and sensor technology, applied in the direction of color/spectral characteristic measurement, transmittance measurement, etc., can solve the problems of color data fluctuation, measurement error, unstable measurement results, etc., achieve online monitoring, overcome the different light source intensity, The effect of overcoming the influence of the difference in transmittance
Inactive Publication Date: 2007-02-14
WUHAN UNIV OF TECH
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Problems solved by technology
[0022] Since the optical measurement is greatly affected by the color of the oil, the inhomogeneity of the color in the measured sample may lead to fluctuations in the data, resulting in measurement errors
[0023] In addition to the above factors, the power fluctuation of the light source, external stray light and vibration at the fiber coupling will also lead to unstable measurement results.
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[0043] like figure 2 , image 3 , Figure 4 As shown, the online oil monitoring sensor based on dual optical paths is mainly composed of a light source 1, a Y-shaped fiber coupler 2, a first self-focusing lens 3, a second self-focusing lens 4, a third self-focusing lens 5, and a fourth self-focusing lens. Focusing lens 6, reference oil pool 7, measuring oil pool 8, first photodetector 9, second photodetector 10, first incident optical fiber, first outgoing optical fiber, second incident optical fiber 11, second outgoing optical fiber 12 , the input end of the Y-type fiber coupler 2 is connected to the light source 1 by an optical fiber, and the output end of the Y-type fiber coupler 2 is divided into two paths, which are respectively connected with one end of the first incident fiber and the second incident fiber 11, and the first incident fiber The other end of the optical fiber is in contact with the first self-focusing lens 3, and the first self-focusing lens 3 is positi...
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Abstract
This invention relates to a oil monitoring sensor based on double light path on-line oil monitor sensor, which is characterized by the following: the Y shape light fiber coupler 2 input end is connected with light source 1 through light fiber; the output ends of the Y shape light fiber coupler into two paths which are separately connected with the ends of two incidence light fiber ; the other end of the incidence light fiber is connected with focus lens 3 and the other end of the other incidence light fiber is connected with self-focus lens 5 which locates on the front of the reference oil pool 7 and the self-focus lens 6 locates in the back of the reference oil pool 7; one end of the emergent light fiber 12 is connected with self-focus lens 6 and the other end of the emergent light fiber 12 is connected with light detector 9 which is connected with computer through data line; the reference oil liquid level locates inside the reference oil pool 7.
Description
technical field [0001] The invention relates to an optical fiber online oil monitoring sensor. Background technique [0002] Oil monitoring technology is an effective method of working condition monitoring and fault diagnosis. It collects samples of lubricating oil or working medium of equipment, and uses optical, electrical, magnetic and other means to analyze the physical and chemical indicators of the samples and the carried equipment. The wear and pollutant particles of the friction pair, qualitatively and quantitatively describe the wear state of the equipment (including location, form, degree), find out the inducing factors, and predict the development trend. Oil monitoring technology mainly includes two parts: the analysis technology of wear particles in the oil and the physical and chemical properties and state analysis of the oil itself. [0003] The traditional oil monitoring technology mainly adopts the analysis method of off-line sampling. Off-line sampling ana...
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IPC IPC(8): G01N21/59G01N21/25
Inventor 严新平高慧良周新聪吕植勇姜德生
Owner WUHAN UNIV OF TECH