Non-contact monitoring device and method for floating oil on water surface

Abstract

The invention provides a non-contact monitoring device for floating oil on a water surface. The device comprises a UV broadband spectrum light source, an optical filter, an optical filter rotating wheel, a transmitting lens, a receiving lens, a multispectral detector and a control and signal processor, wherein the UV broadband spectrum light source, the optical filter and the transmitting lens compose a transmitting light path, the receiving lens and the multispectral detector compose a receiving light path, the optical filter rotates under the driving of the optical filter rotating wheel, and the optical filter rotating wheel, the UV broadband spectrum light source and the multispectral detector are connected with the control and signal processor. The invention has the following beneficial effects: a multispectral light source and the multispectral detector are employed, and a false alarm rate is reduced to a lowest extent by using two work modes; and the non-contact monitoring device has the advantages of low cost, no contact and real-time monitoring. The invention also discloses a non-contact monitoring method for floating oil on the water surface.

Description

technical field [0001] The invention relates to a non-contact water surface oil slick monitoring device and method, belonging to the technical field of photoelectric sensors. Background technique [0002] With the development of human activities, various oil spill incidents on the water surface continue one after another. The oil spill will float on the water surface, which will not only bring huge economic losses to the society, but also bring immeasurable environmental and ecological impacts. Although there are various preparations to prevent oil spills on the water surface, due to the unpredictability and instantaneous nature of oil spills, how to determine the occurrence of oil spills in the first place is still the most effective way to prevent the spread of hazards. [0003] Among the various oil slick monitoring technologies on the water surface, the most critical is to be able to detect the existence of the oil slick on the water surface at low cost, in real time, wi...

AI Technical Summary

Problems solved by technology

[0004] Among the existing technologies for detecting oil slicks on water surfaces based on ultraviolet light-induced fluorescence, although the detection method using lidar has high sensitivity, the structure is very complicated and the cost is high, and it cannot be arranged at multiple fixed points for continuous monitoring , but also has the disadvantages of limited excitation wavelength and high detection false alarm rate

[0005] Although laser-induced fluorescence and spectrometers are used to collect fluorescence continuous spectra for water surface oil slick monitoring, although it has a good identification ability, it has the disadvantages of low sensitivity and high cost of spectrometers, and it is difficult to be popularized on a large scale.

[0006] In recent years, there have been devices that use narrow-band UV LEDs as the excitation light source for oil slick detection on water surfaces. However, since the current high-power UV LEDs only have a wavelength of 365nm, the detection effect on heavy oil such as crude oil is better, and the effect on light oil detection is not good. and because the wavelength of the excitation light source is limited, there is only one detection band, so the false alarm rate is high, and it is difficult to distinguish other fluorescent substances floating on the water surface

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