CN103776787A - Double-spectrum water quality analyzer - Google Patents
Double-spectrum water quality analyzer Download PDFInfo
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- CN103776787A CN103776787A CN201410064056.3A CN201410064056A CN103776787A CN 103776787 A CN103776787 A CN 103776787A CN 201410064056 A CN201410064056 A CN 201410064056A CN 103776787 A CN103776787 A CN 103776787A
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Abstract
The invention discloses a double-spectrum water quality analyzer, comprising a light source, a collimating lens, a sample storage device, a spectrum detection system and a control terminal, wherein the collimating lens is used for collimating an outgoing beam of the light source; the control terminal is respectively connected with the light source and the spectrum detection system; a water sample pond is arranged at the upper part of the sample storage device; a measurement light path through hole sealed by a first window sheet and a second window sheet is formed in the lateral wall of the water sample pond; the outgoing beam of the light source orderly passes through the first window sheet, the water sample pond and the second window sheet; a reference light path through hole penetrating through the sample storage device along the outgoing direction of the light source beam is formed in the lower part of the sample storage device; the measurement light path through hole and the water sample pond form a measurement light path; the reference light path through hole forms a reference light path. By adopting the double-spectrum water quality analyzer, distortion of detection data caused by an error introduced by an instable light source or absorption of the light beam caused by other parts in the light path is avoided.
Description
Technical field
The invention belongs to environment measuring technical field, be applied to online or laboratory water analysis and detection, particularly a kind of Water Test Kits based on two spectrum double light paths.
Background technology
The indexs such as COD, BOD in water body, TOC, DOC, UV254, colourity, nitrate, nitrite, turbidity are to weigh the significant data of water pollution degree.
Traditional on-line detector table adopts colourimetry, electrochemical process etc. mostly, and electrochemical process is easily interfered, measurement result out of true.Colourimetry need to be done pre-service and chemical reaction to sample, and detection time is slow and have a secondary pollution.
Water analysis technology based on absorption spectroscopy, the multiple pollutant index in analyzing water body fast, and can not cause secondary pollution.Particularly the organism based on ultra-violet absorption spectrum and inorganic salts analytical equipment, also have colourity and nephelometric analysis equipment based on visible absorption spectrum, be widely used in online water quality detection field, but all water analysis equipment based on spectral analysis technique are in the market all to adopt monochromatic light road single spectrum and double light path single spectrum.If the patent No. is 200710151043.x, patent name is the patent of invention of " one is Water Test Kits under water ", discloses a kind of Water Test Kits under water online that adopts monochromatic light road, has in real time, the function of fast detecting sewage composition.
But owing to there is no the spectrum of reference path or not being to detect reference path spectrum simultaneously, the instability of adding light source makes the absorption spectrum error ratio of acquisition larger.Particularly, in long-term online testing process, cannot guarantee the precision of measuring.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of two spectral water quality analyser is provided, concrete technical scheme is as follows:
A kind of two spectral water quality analyser, comprise light source, for collimating collimation lens, sample storage device, the spectral detection system of described light source outgoing beam and the control terminal being connected with described spectral detection system with described light source respectively, the top of described sample storage device is provided with water sample pond, the sidewall in described water sample pond is provided with two optical path through holes with first window sheet and the sealing of Second Window sheet, and described light source outgoing beam passes through described first window sheet, water sample pond and Second Window sheet successively; The bottom of described sample storage device is provided with the reference path through hole that runs through described sample storage device along described light beam of light source exit direction, and wherein said optical path through hole and described water sample pond form optical path, and described reference path through hole forms reference path.
In technique scheme, light source outgoing beam obtains parallel beam after collimation lens, parallel beam enters optical path and the reference path of sample storage device simultaneously, when parallel beam enters optical path, pass through successively first window sheet, water sample pond (in water sample pond, placing water sample to be measured) and Second Window sheet, enter subsequently spectral detection system; Parallel beam directly enters spectral detection system after reference path through hole (reference path).Optical path and reference path are set simultaneously, make same light beam (directional light) enter optical path and reference path simultaneously, avoid because of the reason such as unstable of light source make the absorption spectrum that measures and standard sources with reference to time introduce error, reduce measuring accuracy.Detect the spectrum of the directional light that do not absorb through detected water sample (with to enter directional light before optical path identical) for the absorption spectrum obtaining after measuring provides reference simultaneously, improve detection degree of accuracy.
As preferably, described spectral detection system comprises the optical fiber, slit, concave grating and the linear array photoelectric sensors that are separately positioned on after described optical path and described reference path, wherein said linear array photoelectric sensors is connected with described control terminal, and described light source outgoing beam passes through successively described optical fiber, slit, concave grating and linear array photoelectric sensors after sample storage device.
As preferably, the two ends of described reference path through hole are provided with identical with described Second Window sheet with described first window sheet respectively the 3rd diaphragm and the 4th diaphragm, described reference path through hole, the 3rd diaphragm, the 4th diaphragm form confined space, and fill pure water in described confined spaces.By three diaphragm and four diaphragm identical with optical path are set in reference path, and in confined space, fill pure water, object be to set up with in optical path except water sample identical light path, get rid of because introducing error because equipment is different in light path, thereby record accurately the absorption spectrum of water sample.
As preferably, described sample storage device outside also comprises the waterproof case of a semi-surrounding, has comprised described light source, collimation lens, sample storage device, spectral detection system and control terminal except described water sample pond in described shell.Add waterproof case outward at sample storage device, miscellaneous part except water sample pond is covered in waterproof case, object is that this Water Test Kits can be put into waters to be measured carries out water-quality test on the spot, Water Test Kits is put into rear water sample under water and will be full of water sample pond, can directly test; Or after putting under water, take out again test, after taking out, water sample will be full of water sample pond equally.
As preferably, described control terminal comprises energy supply control module, signal processing module and communication module.Energy supply control module is for controlling the duty of power supply; Signal processing module is for the measured spectral signal of receiving spectrum detection system and deal with the analysis spectroscopic data that finally can be absorbed; Communication module is used for and outside swap data, as water sample detection data, the outside control command to Water Test Kits etc.
The two spectral water quality analysers of one of the present invention, by optical path and reference path are set, and make identical parallel beam enter optical path and reference path in contrast simultaneously, make the water sample absorption spectrum recording after optical path there is a reference spectra, thereby the contrast of absorption spectrum and reference spectra is obtained to comparatively accurate water analysis data, thus avoid because of flashing is fixed or light path in other parts error that beam absorption is introduced make to detect data distortion.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of pair of spectrum of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Be illustrated in figure 1 the two spectral water quality analysers of one of the embodiment of the present invention, the collimation lens 2, sample storage device 3 and the spectral detection system 4 that comprise xenon flash light source 1 and set gradually along xenon flash light source 1 outgoing beam optical path direction, be also provided with control terminal 5 between xenon flash light source 1 and spectral detection system 4.
Spectral detection system 4 is divided into measure spectrum detection system and the reference spectra detection system that structure is identical, after being separately positioned on optical path and reference path, is respectively used to the spectral signal of the light beam of exporting after detecting optical path and reference path.Wherein measure spectrum detection system comprises the first optical fiber 10, the first slit 11, the first concave grating 12 and First Line array photoelectric sensor 13; Correspondingly, reference spectra detection system comprises the second optical fiber 14, the second slit 15, the second concave grating 16 and the second linear array photoelectric sensors 17.Wherein, First Line array photoelectric sensor 13 is all connected with control terminal 5 with the second linear array photoelectric sensors 17, for by detect to spectral information be transferred to control terminal 5.
Light source control module 501 that control terminal 5 comprises gating pulse xenon source 1, for receiving and process the signal processing module 502 of the spectral signal that spectral detection system 4 detects and the communication module 503 that carries out communication with outside.
The two spectral water quality analysers of one of the present invention are also provided with a waterproof case 304 on sample storage device 3, and waterproof case 304 inside have comprised xenon flash light source 1, collimation lens 2, sample storage device 3, spectral detection system 4 and control terminal 5 except water sample pond 301.Be that waterproof case 304 has comprised all parts except water sample pond 301.
The course of work of a kind of pair of spectral water quality analyser of the present embodiment is as follows: first, water sample is put into the water sample pond 301 of sample storage device 3, guaranteed that the water level of water sample, higher than optical path through hole 302, makes optical path through hole 302 be immersed in underwater; Then, light source control module 501 gating pulse xenon sources 1 in control terminal 5 send pulsed light beam, pulsed light beam forms directional light after collimation lens 2 collimations on being placed in light path, and directional light projects on sample storage device 3, and directional light enters optical path and reference path simultaneously.While entering optical path, directional light, successively through first window sheet 6, water sample pond 301 and Second Window sheet 7, enters subsequently measure spectrum detection system and detects the measure spectrum information that obtains; While entering reference path, directional light, successively through the 3rd diaphragm 8, pure water and the 4th diaphragm 9, enters subsequently reference path detection system and detects the reference spectra information that obtains.Because of optical path identical with the diaphragm in reference path (degree of absorption to directional light is identical), and pure water can be thought to directional light without absorption, so the difference of measure spectrum information relative reference spectral information is by the water sample in water sample pond, the absorption of directional light to be caused, thereby can draw the absorbing state of water sample to directional light by comparing and measuring spectral information and reference spectra information, and further obtain material composition and the content in water sample by Chemical Measurement algorithm.Spectral detection system detects the information obtaining will transfer to control terminal 5, and message processing module 502 is to the spectral information processing that performs an analysis, and analysis result is transferred to outside by communication module 503.
In use procedure, also two the one of embodiment of the present invention spectral water quality analysers can be immersed in waters to be measured on the spot, water sample will fill whole water sample pond 301, and waterproof case 304 will guarantee the isolation of miscellaneous part and water sample, guarantee that each parts normally work.
A kind of pair of spectral water quality analyser of the embodiment of the present invention adopts the scheme that is provided with optical path and reference path, by detecting respectively the spectral information of optical path and reference path, and obtain detecting spectroscopic data and reference spectra data, thereby analyze using reference spectra data as Light Source Compensation correction data the substance classes and the content that draw in water sample.Thereby this scheme has avoided causing because of the fixed drawing-in system error of flashing the decline of measuring accuracy, have advantages of simple in structure, measuring accuracy is high.
Above-described embodiment has been described in detail technical scheme of the present invention and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present invention; be not limited to the present invention; all any modifications of making within the scope of principle of the present invention, supplement and be equal to replacement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a two spectral water quality analyser, comprise light source, for collimating collimation lens, sample storage device, the spectral detection system of described light source outgoing beam and the control terminal being connected with described spectral detection system with described light source respectively, it is characterized in that, the top of described sample storage device is provided with water sample pond, the sidewall in described water sample pond is provided with two optical path through holes with first window sheet and the sealing of Second Window sheet, and described light source outgoing beam passes through described first window sheet, water sample pond and Second Window sheet successively; The bottom of described sample storage device is provided with the reference path through hole that runs through described sample storage device along described light beam of light source exit direction, and wherein said optical path through hole and described water sample pond form optical path, and described reference path through hole forms reference path.
2. the two spectral water quality analysers of one according to claim 1, it is characterized in that, described spectral detection system comprises the optical fiber, slit, concave grating and the linear array photoelectric sensors that are separately positioned on after described optical path and described reference path, wherein said linear array photoelectric sensors is connected with described control terminal, and described light source outgoing beam passes through successively described optical fiber, slit, concave grating and linear array photoelectric sensors after sample storage device.
3. the two spectral water quality analysers of one according to claim 1, it is characterized in that, the two ends of described reference path through hole are provided with identical with described Second Window sheet with described first window sheet respectively the 3rd diaphragm and the 4th diaphragm, described reference path through hole, the 3rd diaphragm, the 4th diaphragm form confined space, and fill pure water in described confined spaces.
4. the two spectral water quality analysers of one according to claim 1, it is characterized in that, described sample storage device outside also comprises the waterproof case of a semi-surrounding, has comprised described light source, collimation lens, sample storage device, spectral detection system and control terminal except the described water sample pond in described shell.
5. the two spectral water quality analysers of one according to claim 1, is characterized in that, described control terminal comprises energy supply control module, signal processing module and communication module.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297157A (en) * | 2014-10-27 | 2015-01-21 | 合肥卓越分析仪器有限责任公司 | Organic solution absorption spectrum detection equipment |
| CN104359841A (en) * | 2014-10-27 | 2015-02-18 | 合肥卓越分析仪器有限责任公司 | Organic solution spectrophotometer |
| CN106198424A (en) * | 2016-09-28 | 2016-12-07 | 深圳市七善科技有限公司 | A kind of based on full spectral water quality on-line monitoring equipment and monitoring method thereof |
| CN106568715A (en) * | 2016-09-30 | 2017-04-19 | 深圳市赛宝伦科技有限公司 | Online type full-spectrum water quality analyzer |
| CN107340250A (en) * | 2017-07-27 | 2017-11-10 | 山西鑫华翔科技发展有限公司 | Double light-metering light path COD on-line analysis measuring instruments |
| CN107643260A (en) * | 2017-11-06 | 2018-01-30 | 汉威科技集团股份有限公司 | A kind of wide spectrum Multiparameter water quality monitoring system |
| CN107860718A (en) * | 2017-12-08 | 2018-03-30 | 杭州驱歌科技有限公司 | A kind of water analysis outfit |
| WO2018107515A1 (en) * | 2016-12-13 | 2018-06-21 | Hong Kong Applied Science and Technology Research Institute Company Limited | A compact device for sensing a liquid with energy harvesting from liquid motion |
| CN108489915A (en) * | 2018-02-13 | 2018-09-04 | 中国海洋石油集团有限公司 | A kind of fluid measurement optical system |
| WO2018157440A1 (en) * | 2017-03-03 | 2018-09-07 | 深圳市比特原子科技有限公司 | Portable multiparameter water quality detector |
| CN109142247A (en) * | 2018-08-20 | 2019-01-04 | 山东润智能科技有限公司 | COD monitors system in spectrochemistry oxygen demand sensor and medical waste water |
| CN109187380A (en) * | 2018-07-25 | 2019-01-11 | 北京农业智能装备技术研究中心 | A kind of water quality detector, water pollution emission source monitor system and method |
| CN110887801A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
| CN110887799A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
| CN111678869A (en) * | 2020-05-29 | 2020-09-18 | 山东省科学院海洋仪器仪表研究所 | Water quality ecological parameter detection device and detection method |
| CN111896320A (en) * | 2020-08-06 | 2020-11-06 | 北京微芯区块链与边缘计算研究院 | Water sample collection device and water quality monitor |
| CN116482031A (en) * | 2023-01-03 | 2023-07-25 | 武汉新烽光电股份有限公司 | Range automatic adjustable Chemical Oxygen Demand (COD) device |
| CN116577301A (en) * | 2023-07-13 | 2023-08-11 | 上海科泽智慧环境科技有限公司 | Double-light contrast type analyzer and analysis method thereof |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359841A (en) * | 2014-10-27 | 2015-02-18 | 合肥卓越分析仪器有限责任公司 | Organic solution spectrophotometer |
| CN104297157A (en) * | 2014-10-27 | 2015-01-21 | 合肥卓越分析仪器有限责任公司 | Organic solution absorption spectrum detection equipment |
| CN106198424A (en) * | 2016-09-28 | 2016-12-07 | 深圳市七善科技有限公司 | A kind of based on full spectral water quality on-line monitoring equipment and monitoring method thereof |
| CN106198424B (en) * | 2016-09-28 | 2020-03-06 | 深圳市七善科技有限公司 | Full-spectrum-based water quality online monitoring device and monitoring method thereof |
| CN106568715A (en) * | 2016-09-30 | 2017-04-19 | 深圳市赛宝伦科技有限公司 | Online type full-spectrum water quality analyzer |
| CN106568715B (en) * | 2016-09-30 | 2019-03-19 | 深圳市赛宝伦科技有限公司 | A kind of online full spectral water quality analyzer |
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| WO2018107515A1 (en) * | 2016-12-13 | 2018-06-21 | Hong Kong Applied Science and Technology Research Institute Company Limited | A compact device for sensing a liquid with energy harvesting from liquid motion |
| CN108885170A (en) * | 2016-12-13 | 2018-11-23 | 香港应用科技研究院有限公司 | A kind of energy that use is collected from liquid motion detects the midget plant of liquid |
| WO2018157440A1 (en) * | 2017-03-03 | 2018-09-07 | 深圳市比特原子科技有限公司 | Portable multiparameter water quality detector |
| CN107340250A (en) * | 2017-07-27 | 2017-11-10 | 山西鑫华翔科技发展有限公司 | Double light-metering light path COD on-line analysis measuring instruments |
| CN107643260A (en) * | 2017-11-06 | 2018-01-30 | 汉威科技集团股份有限公司 | A kind of wide spectrum Multiparameter water quality monitoring system |
| CN107860718A (en) * | 2017-12-08 | 2018-03-30 | 杭州驱歌科技有限公司 | A kind of water analysis outfit |
| CN108489915A (en) * | 2018-02-13 | 2018-09-04 | 中国海洋石油集团有限公司 | A kind of fluid measurement optical system |
| CN109187380A (en) * | 2018-07-25 | 2019-01-11 | 北京农业智能装备技术研究中心 | A kind of water quality detector, water pollution emission source monitor system and method |
| CN109142247A (en) * | 2018-08-20 | 2019-01-04 | 山东润智能科技有限公司 | COD monitors system in spectrochemistry oxygen demand sensor and medical waste water |
| CN110887799A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
| CN110887801A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
| CN111678869A (en) * | 2020-05-29 | 2020-09-18 | 山东省科学院海洋仪器仪表研究所 | Water quality ecological parameter detection device and detection method |
| CN111896320A (en) * | 2020-08-06 | 2020-11-06 | 北京微芯区块链与边缘计算研究院 | Water sample collection device and water quality monitor |
| CN111896320B (en) * | 2020-08-06 | 2024-03-12 | 北京微芯区块链与边缘计算研究院 | Water sample collection device and water quality monitor |
| CN116482031A (en) * | 2023-01-03 | 2023-07-25 | 武汉新烽光电股份有限公司 | Range automatic adjustable Chemical Oxygen Demand (COD) device |
| CN116577301A (en) * | 2023-07-13 | 2023-08-11 | 上海科泽智慧环境科技有限公司 | Double-light contrast type analyzer and analysis method thereof |
| CN116577301B (en) * | 2023-07-13 | 2023-09-19 | 上海科泽智慧环境科技有限公司 | Double-light contrast type analyzer and analysis method thereof |
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