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Device for detecting concentration of transparent mixed solution with two solutes

A technology for mixed solution and concentration detection, applied in the direction of polarization influence characteristics, etc., to achieve the effects of easy device fabrication, improved detection sensitivity, and elimination of unstable light source luminous power

Active Publication Date: 2012-06-27
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to propose a device for detecting the concentration of two kinds of solute transparent mixed solution to solve the problem of detecting the concentration of two solute transparent mixed solutions

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  • Device for detecting concentration of transparent mixed solution with two solutes
  • Device for detecting concentration of transparent mixed solution with two solutes

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specific Embodiment 1

[0033] The invention provides a device for detecting the concentration of two solute transparent mixed solutions. The device consists of a semiconductor laser

[0034] 1. Polarization-dependent optical isolator 2, thin-film polarization beam splitter prism 3, sample cell and magneto-optical modulator 4, polarizer 5, first photodetector 6, second photodetector 7, division amplifier 8 and microcomputer processing Composed with display unit 9.

[0035] A substance itself has a natural optical rotation effect, and the optical rotation angle is θ A1 , B does not have natural optical rotation effect; both solutes obviously have Faraday magnetic optical rotation effect and the direction of magnetic optical rotation is the same, then the total optical rotation angle of polarized light after passing through the solution is (θ A1 +θ A +θ B ).

[0036] where: θ A1 = a c d, θ A =V A dB 0 sin ωt, θ B =V B dB 0 sin ωt,

[0037] Without considering various absorptions and surfac...

specific Embodiment 2

[0040] The invention provides a device for detecting the concentration of two solute transparent mixed solutions. The device consists of a semiconductor laser 1, a polarization-dependent optical isolator 2, a thin-film polarization beam splitter prism 3, a sample cell and a magneto-optical modulator 4, a polarizer 5, a first photodetector 6, a second photodetector 7, and a division amplifier 8 and microcomputer processing and display unit 9.

[0041] A substance itself has a natural optical rotation effect, and the optical rotation angle is θ A1 , B does not have natural optical rotation effect and obviously has Faraday magnetic optical rotation effect, then the total optical rotation angle of polarized light after passing through the solution is (θ A1 +θ B ).

[0042] where: θ A1 = a c d, θ B =V B dB 0 sin ωt,

[0043] Without considering various absorptions and surface reflections, the received light intensity of the first photodetector 6 is: I=I 01 sin 2 (θ A1 +θ...

specific Embodiment 3

[0045] The invention provides a device for detecting the concentration of two solute transparent mixed solutions. The device consists of a semiconductor laser 1, a polarization-dependent optical isolator 2, a thin-film polarization beam splitter prism 3, a sample cell and a magneto-optical modulator 4, a polarizer 5, a first photodetector 6, a second photodetector 7, and a division amplifier 8 and microcomputer processing and display unit 9.

[0046] A substance itself has a natural optical rotation effect, and the optical rotation angle is θ A1 , Substance B does not have natural optical rotation effect; both solutes obviously have Faraday magnetic optical rotation effect and the direction of magnetic optical rotation is opposite, then the total optical rotation angle of polarized light after passing through the solution is (θ A1 +|θ A -θ B |).

[0047] where: θ A1 = a c d, θ A =V A dB 0 sin ωt, θ B =V B dB 0 sin ωt,

[0048] Without considering various absorption...

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Abstract

The invention discloses a device for detecting the concentration of a transparent mixed solution with two solutes. The device consists of a semiconductor laser (1), a polarization relevant optoisolator (2), a film polarization beam splitter prism (3), a sample pool and a magneto-optic modulator (4), a polaroid (5), photoelectric detectors (6 and 7), a division amplifier (8) and a microcomputer processing and displaying unit (9). The device has simple detection principle and easier device manufacturing; the division amplifier is adopted so as to improve system detection sensitivity and remove adverse influence due to instability of light source transmitted power at the same time; a non-invasive detection method is adopted, thus the device has no pollution on the solution; real-time and automatic detection can be realized by adopting the microcomputer processing and drawing display technology; and the technology has a better application prospect in detecting the concentration of the transparent mixed solution with the two solutes.

Description

technical field [0001] The patent of the invention relates to a device for detecting the concentration of two solute transparent mixed solutions and its working principle, belonging to the technical fields of photoelectric detection, photoelectric sensing and optical information processing. Background technique [0002] Magnetism is one of the basic physical properties of substances. Through the detection and research of the magnetic properties of substances, some parameter changes of substances can be understood. For example, the concentration information of solutions can be obtained by detecting the magnetic rotation angle of solutions containing paramagnetic solutes. Magneto-optics is an ancient and enduring subject, and its applications in the fields of optical detection and photoelectric sensing are becoming more and more extensive; the most widely used is the Faraday magnetic rotation effect, including current sensors, magnetic field sensors, and magneto-optical isolati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/21
Inventor 沈骁梁忠诚
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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