CN211292572U - Multi-optical path transmission spectrum measurement interface for water quality sample measurement - Google Patents

Abstract

The utility model discloses a many optical paths transmission spectrum measurement interface for quality of water sample is measured, measure the interface and include: the system comprises an incident optical fiber interface and three acquisition optical fiber interfaces, wherein the three acquisition optical fiber interfaces respectively acquire water quality samples in three corresponding sample tubes, and the three sample tubes have different optical paths; the three acquisition optical fiber interfaces are respectively connected with the 1 × 3 optical switch, and three absorption spectrum signals are output through the output optical fibers by switching of the optical switches. The measurement interface can simultaneously measure the transmission spectra of the water samples in different optical paths, adopts the optical switch to switch different measurement channels, has high speed, has switching delay time less than 1ms, and has higher stability.

Description

Multi-optical path transmission spectrum measurement interface for water quality sample measurement

Technical Field

The utility model relates to an environmental monitoring instrument field especially relates to a many optical distances transmission spectrum measurement interface for quality of water sample measurement.

Background

In recent years, the water quality on-line automatic monitor industry in China. The development is rapid, and the domestic research and development, production technology and operation and maintenance service are continuously improved. The continuous environmental accidents in China and the increasing living environment requirements of people also promote the continuous development of instruments in the aspects of accuracy, stability, reliability and the like.

A UVASecosc type ultraviolet absorption online analyzer produced by HACH company in America adopts a double-beam reference framework to correct turbidity influence, and COD online monitoring is realized. The on-line water quality COD detector of UVM-4020 type ultraviolet absorption method produced by Shimadzu in Japan adopts weighted multi-wavelength, thus further improving the detection precision. The full spectrum on-line measurement system of STIP-scan + CAS74 produced by Germany E + H company realizes the simultaneous detection of various pollutants.

The main problems faced by the present water quality parameter monitoring device based on spectrum are: in the water quality parameter detection, components to be detected, such as blue algae and chlorophyll, have similar absorption characteristics, and have the phenomenon of overlapping absorption peaks, and the absorption characteristics of the components to be detected and the chlorophyll need to be separated according to different optical path transmission spectra. However, the conventional transmission spectrum measurement interface is often capable of measuring only the transmission spectrum in one optical path, and an interface capable of realizing multi-optical path transmission spectrum measurement is lacking.

SUMMERY OF THE UTILITY MODEL

The utility model provides a many optical paths transmission spectrum measurement interface for quality of water sample measurement, the utility model discloses can realize the monitoring of quality of water sample transmission spectrum under the different optical paths to through photoswitch switching channel, improved measuring speed, see the following description for details:

a multi-optical path transmission spectroscopy measurement interface for water quality sample measurement, the measurement interface comprising:

an incident optical fiber interface, three acquisition optical fiber interfaces,

the three acquisition optical fiber interfaces respectively acquire water quality samples in the corresponding three sample tubes, and the three sample tubes have different optical paths;

the three acquisition optical fiber interfaces are respectively connected with the 1 × 3 optical switch, and three absorption spectrum signals are output through the output optical fibers by switching of the optical switches.

Further, the three sample tubes are connected with the water inlet and the water outlet.

The utility model provides a technical scheme's beneficial effect is:

1. three sample tubes with different diameters are arranged in the measuring interface, so that multi-optical path transmission spectrum analysis of different components can be realized;

2. the measurement interface can simultaneously measure the transmission spectra of the water samples in different optical paths, and different measurement channels are switched by adopting the optical switch, so that the speed is high, the switching delay time is less than 1ms, and the stability is high;

3. the measurement interface adopts an optical fiber interface, is convenient to be connected with different light sources and spectrometers, and can be suitable for different application occasions.

Drawings

Fig. 1 is a schematic structural diagram of a multi-optical path transmission spectrum measurement interface for water quality sample measurement.

In the drawings, the components represented by the respective reference numerals are listed below:

1: an incident optical fiber interface; 2: a first collection fiber optic interface;

3: a second collection fiber optic interface; 4: a third collection fiber optic interface;

5: a first sample tube; 6: a second sample tube;

7: a third sample tube; 8: an optical switch;

9: an output optical fiber; 10: a water inlet;

11: and (7) a water outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below.

The utility model designs a many optical paths transmission spectrum measurement interface for quality of water sample is measured, this interface mainly includes: incident optical fiber interface 1, three collection optical fiber interface (2, 3, 4), wherein three collection optical fiber interface (2, 3, 4) gather respectively and correspond the quality of water sample in three sample cell (5, 6, 7), and three sample cell (5, 6, 7) have different optical distances.

The three acquisition optical fiber interfaces (2, 3, 4) are respectively connected with the 1 x 3 optical switch 8, and three absorption spectrum signals can be respectively output through the output optical fibers 9 by switching the optical switches 8, so that the measurement of the absorption spectrum signals with different optical paths is realized.

The device is provided with three sample tubes (5, 6, 7) with different diameters, and is connected with a water inlet 10 and a water outlet 11, water quality samples are filled in the sample tubes and flow through the sample tubes in sequence, sample absorption spectra with different optical paths can be collected in the sample flowing process, and the influence of sample precipitation on measurement is reduced.

The utility model discloses a measurement interface adopts the optical fiber interface mode, and convenient and different light sources and spectrum appearance are connected, and adaptable different occasions are used.

The measurement process can be described as:

opening a water inlet 10 and a water outlet 11, and enabling the water quality sample to be detected to sequentially flow into and fill three sample tubes (5, 6 and 7);

the optical switches 8 are switched respectively, and three paths of acquisition optical fiber signals are output through the output optical fibers 9 in sequence;

after the spectral measurement is completed, the water inlet 10 and the water outlet 11 are closed in sequence, and the measurement is completed.

The embodiment of the utility model provides a except that doing special explanation to the model of each device, the restriction is not done to the model of other devices, as long as can accomplish the device of above-mentioned function all can.

Those skilled in the art will appreciate that the drawings are only schematic illustrations of preferred embodiments, and the embodiments of the present invention are given the same reference numerals and are not intended to represent the merits of the embodiments.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (2)

1. A multi-optical path transmission spectroscopy measurement interface for water quality sample measurement, the measurement interface comprising: an incident optical fiber interface, three acquisition optical fiber interfaces,

the three acquisition optical fiber interfaces respectively acquire water quality samples in the corresponding three sample tubes, and the three sample tubes have different optical paths;

the three acquisition optical fiber interfaces are respectively connected with the 1 × 3 optical switch, and three absorption spectrum signals are output through the output optical fibers by switching of the optical switches.

2. The multi-optical path transmission spectrum measuring interface for water quality sample measurement according to claim 1, wherein the three sample tubes are connected with a water inlet and a water outlet.

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