CN202267651U - Water quality chroma detection device based on optical evanescent wave sensor - Google Patents
Water quality chroma detection device based on optical evanescent wave sensor Download PDFInfo
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- CN202267651U CN202267651U CN2011203977049U CN201120397704U CN202267651U CN 202267651 U CN202267651 U CN 202267651U CN 2011203977049 U CN2011203977049 U CN 2011203977049U CN 201120397704 U CN201120397704 U CN 201120397704U CN 202267651 U CN202267651 U CN 202267651U
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Abstract
The utility model discloses a water quality chroma detection device based on an optical evanescent wave sensor, which comprises an ultraviolet visible light source, an intrinsic optical evanescent wave sensor, a universal serial bus (USB) optical spectrograph and a computer. The ultraviolet visible light source is connected with the intrinsic optical evanescent wave sensor through an SMA905 optical connector, the intrinsic optical evanescent wave sensor is connected with the USB optical spectrograph through an SMA905 optical connector, the USB optical spectrograph is connected with the computer through a USB data line, and the computer contains chroma calculation and analysis programs. The water quality chroma detection device utilizes the absorption principle of optical evanescent waves, is capable of obtaining water quality chroma through spectroscopic data calculation, and has the advantages of being simple in structure, convenient to operate, small in size, low in cost and the like.
Description
Technical field
The present invention relates to a kind of colorimetric detection device, particularly relate to a kind of colorimetric detection device that is applied to potable water, industrial waste water and the various WS.
Background technology
The colourity of water is the sign of the color of relevant water, is one of important indicator of water quality quality, and detection method commonly used at present has chemical analysis method, spectrophotometer method and transmission-type Fibre Optical Sensor detection method.Wherein chemical analysis method is mainly based on existing national standard (GB/T11903-1989): platinum cobalt colourimetry and extension rate method.Platinum cobalt colourimetry is that utilization is prepared color standard solution with potassium chloroplatinate and cobalt chloride and sample carries out the colourity of visual comparison with working sample; Be applicable to clean water, slight pollution also has a little the water of yellow hue and the day water, underground water and the potable water of cleaning.The extension rate method is that sample is diluted to visual comparison and the optical voidness water extension rate when just cannot see color as the intensity of expressing color with the optics pure water, is applicable to the day water and industrial waste water that pollution is more serious.Chemical analysis method need adopt the chemicals preparing standard solution, detects loaded down with trivial detailsly, can bring secondary pollution simultaneously; And adopting visual subjective judgement, measurement result has uncertainty.
Spectrophotometer method mainly is based on langbobier law, sets up the match relation of absorbance and colourity specific wavelength (generally being maximum absorption wavelength) under through calibration experiment, according to the match relational expression, by the absorbance calculating acquisition colourity of testing sample.This method need be gathered sample, chemical treatment, causes secondary pollution easily, simultaneously this method sense cycle length, detection of complex, cost height.
Transmission-type Fibre Optical Sensor detection method is that input optical fibre transmits light to solution; After getting into output optical fibre (input optical fibre and output optical fibre be homonymy not) or light transmission solution behind the light transmission solution again; Get into output optical fibre (input optical fibre and output optical fibre homonymy) through behind the solution again through mirror reflects; Output optical fibre outputs to optical detection device with light, obtains solution colourity through output light information being carried out computing.Transmission-type Fibre Optical Sensor detection method requires optical fiber outgoing end face accurately to aim at receiving end face or reflecting surface, and general mechanical adjustment is difficult to realize; And because optical fiber is too thin, and the dispersing of light, effective absorption distance of light is little; And this method need install optical elements such as collimation lens, condenser lens and realize aiming at, and device is complicated, cost is high, thereby optical element directly contacts with liquid can reduce element serviceable life even can not use and influences the device use simultaneously.
Summary of the invention
In order to overcome the deficiency of present water quality colorimetric detection device; The purpose of the utility model is to provide a kind of water quality colorimetric detection device based on the fast travelling waves of optical fibre Fibre Optical Sensor; This device utilizes the principle of absorption of fast travelling waves of optical fibre, calculates through spectroscopic data and can obtain water quality colourity.
The utility model solves the technical scheme that its technical matters adopted: a kind of water quality colorimetric detection device based on the fast travelling waves of optical fibre sensing comprises UV, visible light radiant, Intrinsical fast travelling waves of optical fibre sensor, USB fiber spectrometer and computing machine.The UV, visible light radiant is connected with Intrinsical fast travelling waves of optical fibre sensor through the SMA905 fibre-optical splice; Intrinsical fast travelling waves of optical fibre sensor is connected with the USB fiber spectrometer through the SMA905 fibre-optical splice; The USB fiber spectrometer is connected with computing machine through the usb data line, comprises colorimeter calculation and Analysis program in the computing machine.
Described ultraviolet-visible light source light spectrum scope is 380nm～780nm.
Described Intrinsical fast travelling waves of optical fibre sensor comprises structure of fiber_optic and optical fiber, and optical fiber is wound on the support, and optical fiber comprises going the covering section and not going the covering section of alternate setting, does not wherein go the covering section to contact with support, goes the covering section not contact with support.
Described USB fiber spectrometer includes optical splitter, and interface comprises a SMA905 standard fiber interface, a USB interface and a serial ports.
The beneficial effect of the utility model is:
1. spectral range is wide, covers whole visible range (380nm-780nm), satisfies the colorimetry claimed range;
2. the preparation of Intrinsical fast travelling waves of optical fibre sensor is simple, and cost is low, and is highly sensitive;
3. the device overall volume is little, easy to carry;
4. whole device utilizes Fibre Optical Sensor measuring water quality colourity, anti-interference strong, can long-distance transmissions, can realize real-time the monitoring.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explanation.
Fig. 1 is the structural representation of the utility model.Among the figure, 1 for passing light optical fiber; 2 is solid boundaries; 3 is Intrinsical evanescent wave sensor; 4 is the usb data line.
Fig. 2 is an Intrinsical fast travelling waves of optical fibre sensor synoptic diagram.301 and 302 is rack body among the figure; 303 for going the covering section; 304 for not going the covering section.
Embodiment
Among Fig. 1; Two SMA905 fibre-optical splices are connected with Intrinsical fast travelling waves of optical fibre sensor 3 optical fiber two ends respectively; Intrinsical fast travelling waves of optical fibre sensor 3 one ends are connected to the UV, visible light radiant through the SMA905 fibre-optical splice; One end SMA905 fibre-optical splice is connected to the USB fiber spectrometer, and the USB fiber spectrometer is connected to computing machine through usb data line 4.
The technical scheme that the utility model purpose realizes: the UV, visible light radiant gets into optical fiber 1 through the SMA905 fibre-optical splice with optically-coupled; Transfer to Intrinsical fast travelling waves of optical fibre sensor 3 through optical fiber 1, Intrinsical fast travelling waves of optical fibre sensor whole 3 is put into needs test sample, Intrinsical fast travelling waves of optical fibre sensor 3 to go the entering of covering section 303 evanescent waves to need in the test sample; Need test sample that evanescent wave is selected to absorb; Luminous power changes, and the light after the variation is coupled into the USB fiber spectrometer through optical fiber 1 transmission through the SMA905 fibre-optical splice; Optical splitter beam split and opto-electronic conversion in the USB fiber spectrometer; Image data is sent to computing machine through usb data line 4,, obtains the chromatic value of institute's test sample through computing machine colorimeter calculation and Analysis program.
Claims (3)
1. water quality colorimetric detection device based on the fast travelling waves of optical fibre sensing; Comprise UV, visible light radiant, Intrinsical fast travelling waves of optical fibre sensor, USB fiber spectrometer and computing machine; The UV, visible light radiant is connected with Intrinsical fast travelling waves of optical fibre sensor through the SMA905 fibre-optical splice; Intrinsical fast travelling waves of optical fibre sensor is connected with the USB fiber spectrometer through the SMA905 fibre-optical splice, and the USB fiber spectrometer is connected with computing machine through the usb data line, comprises colorimeter calculation and Analysis program in the computing machine.
2. a kind of water quality colorimetric detection device based on the fast travelling waves of optical fibre sensing according to claim 1, it is characterized in that: described ultraviolet-visible light source light spectrum scope is 380nm～780nm.
3. a kind of water quality colorimetric detection device according to claim 1 based on the fast travelling waves of optical fibre sensing; It is characterized in that: described Intrinsical fast travelling waves of optical fibre sensor comprises structure of fiber_optic and optical fiber; Optical fiber is wound on the support; Optical fiber comprises going the covering section and not going the covering section of alternate setting, does not wherein go the covering section to contact with support, goes the covering section not contact with support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203977049U CN202267651U (en) | 2011-10-14 | 2011-10-14 | Water quality chroma detection device based on optical evanescent wave sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203977049U CN202267651U (en) | 2011-10-14 | 2011-10-14 | Water quality chroma detection device based on optical evanescent wave sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267651U true CN202267651U (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203977049U Expired - Fee Related CN202267651U (en) | 2011-10-14 | 2011-10-14 | Water quality chroma detection device based on optical evanescent wave sensor |
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| CN (1) | CN202267651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788757A (en) * | 2012-08-28 | 2012-11-21 | 中国计量学院 | Water quality chromaticity detection device on basis of transmission-type optical fiber sensor |
-
2011
- 2011-10-14 CN CN2011203977049U patent/CN202267651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788757A (en) * | 2012-08-28 | 2012-11-21 | 中国计量学院 | Water quality chromaticity detection device on basis of transmission-type optical fiber sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20121014 |