Rear light scattering signal inductive probes

A scattering signal and sensing probe technology, applied in the field of light scattering signal detection, can solve problems such as unfavorable sensor miniaturization, limited detection sensitivity, and unfavorable online measurement, and achieve the effects of simple structure, expansion of research scope, and convenience of online detection.

Inactive Publication Date: 2008-03-12
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1. Insufficient sensitivity
Due to the weak scattering signal of some objects to be detected with low content, it cannot be detected by traditional right-angle scattering or small-angle scattering, and the detection sensitivity is limited
2. It is not conducive to the miniaturization of sensors
3. Not conducive to online determination

Method used

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  • Rear light scattering signal inductive probes

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] See Figure 1, this probe consists of the following parts:

[0017] A cylindrical or square cylinder with a smooth inner surface1. It is glued to base 2. Its main function is to serve as a container for the liquid to be tested. The outer layer is painted black to block light.

[0018] The light source and signal transmission part are composed of two groups of optical fibers, one group is excitation light optical fiber 6, which is composed of 1 to 3 optical fibers. The other group is the detection signal transmission optical fiber 5, which is composed of 4 to 7 optical fibers. Two groups of optical fibers are combined to form a 180-degree backlight scattering detection system.

[0019] Base 2. Made of hard material, opaque to light. Two small holes are designed on the base, one is an optical fiber jack 4 for inserting an optical fiber, and the other is a leakage hole 3 for draining and releasing a measurement liquid.

[0020] The fiber group is inserted from the pr...

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Abstract

A probe consists of light-proof base with two eyelets for releasing determining liquid and inserting optical fibre set; round or square barrel with blacked external for holding liquid to be tested; optical source and signal transmission optical fiber formed by two sets of optical fibres as one set being excited light optical fibre and another being transmission optical fibre of detection signal which are coupled to amplifier of lightsource and signal detection separately to organize an analyzing and detecting system of backward light scattering in 180 degree.

Description

technical field [0001] The invention belongs to the light scattering signal detection technology, and specifically relates to the invention of a probe for content determination based on sensing nearly 180-degree backward light scattering signals, which is used for environmental analysis (such as sulfate ions, chloride ions, heavy metal ions, etc. in water) Determination), biomacromolecule (such as nucleic acid, protein, etc.) analysis, pharmaceutical analysis and sensitive determination of solution turbidity (such as tap water, river and lake water, beer, pharmaceutical water, etc.). Background technique [0002] The usual light scattering research mainly focuses on the detection of 90-degree light scattering signals, and the research on backscattering also belongs to small-angle backscattering. For nearly 180-degree backscattering, due to strong background interference, it cannot be used for During the measurement. Right-angle scattering and small-angle scattering techniqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/51G01N21/65
Inventor 黄承志谭克俊
Owner SOUTHWEST UNIV
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