CN110887799A - Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method - Google Patents
Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method Download PDFInfo
- Publication number
- CN110887799A CN110887799A CN201911182863.4A CN201911182863A CN110887799A CN 110887799 A CN110887799 A CN 110887799A CN 201911182863 A CN201911182863 A CN 201911182863A CN 110887799 A CN110887799 A CN 110887799A
- Authority
- CN
- China
- Prior art keywords
- lens group
- collimating lens
- water
- spectrum
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000001228 spectrum Methods 0.000 title claims abstract description 80
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 238000002835 absorbance Methods 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 10
- 230000003595 spectral effect Effects 0.000 claims description 9
- 238000004611 spectroscopical analysis Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 235000013405 beer Nutrition 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000000840 electrochemical analysis Methods 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003041 laboratory chemical Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001675 atomic spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013375 chromatographic separation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
Abstract
The invention relates to a device and a method for carrying out intermittent in-situ detection on a complex water body based on a spectrum method, which realize in-situ acquisition of underwater continuous fine broad spectrum, and have the advantages of simple and compact structure, strong sealing property, miniaturization, low power consumption, portability and the like. The device comprises a shell, a light source, a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator, a third collimating lens group, a fourth collimating lens group, a second optical fiber, a fifth collimating lens group, a synchronous circuit board, a spectrum module and an upper computer; the light source is arranged in the front end of the shell, and light beams emitted by the light source sequentially pass through the first collimating lens group, the first optical fiber, the second collimating lens group, the attenuator and the third collimating lens group to detect the water to be detected in the water-to-be-detected accommodating groove and then are conveyed to the spectrum module arranged in the rear end of the shell through the fourth collimating lens group, the second optical fiber and the fifth collimating lens group; the spectrum module acquires the spectrum signal, processes the spectrum signal and uploads the spectrum signal to the upper computer.
Description
Technical Field
The invention relates to a device and a method for carrying out intermittent in-situ detection on a complex water body based on a spectrum method.
Background
Two major techniques that have a decisive influence on water quality monitoring since the 80's of the 20 th century are spectroscopic analysis techniques and chemometric techniques.
If the micro-division is carried out, the micro-division can be divided into a chemical analysis technology, an atomic spectrum technology, a chromatographic separation technology, an electrochemical analysis technology, a biological sensing technology and a molecular spectrum technology; wherein, the water quality analyzers of the first three have the problems of large volume, sampling, long test period, high cost and the like.
Although portable, the water quality analyzer based on the electrochemical analysis technology and the biosensing technology has the problems of short service life, high maintenance cost and the like.
The spectral analysis technology is the most widely applied technology in water environment monitoring, and the water quality monitoring based on direct ultraviolet-visible-near infrared spectral analysis is to establish a relevant model of ultraviolet absorbance and water quality parameter concentration by utilizing the characteristic that organic matters and partial inorganic matters absorb ultraviolet light to obtain important water quality parameters, has the advantages of no need of reagents, real-time online, small volume, low cost, multi-parameter detection and the like, has obvious advantages in online monitoring of water bodies such as surface water, domestic drinking water, industrial sewage (after treatment), seawater and the like, and becomes an important development direction of water quality monitoring instruments.
At present, the water quality monitoring is mainly related technical research aiming at surface water, domestic drinking water, industrial sewage (after treatment), seawater and the like, but basically adopts a method of manual sampling and laboratory chemical analysis, and has the defects of low monitoring frequency, data dispersion, asynchronization, offline and the like.
The shore cabinet type on-line monitoring instrument adopts a water pumping and multi-single sensor integrated measurement mode, the system is mechanically complicated, and the ex-situ measurement accuracy is questioned due to the large relation between chemical components and temperature, pressure and the like.
Disclosure of Invention
The invention provides a device and a method for intermittent in-situ detection of a complex water body based on a spectrum method, aiming at the problems that the existing manual sampling and laboratory chemical analysis mode has the defects of low monitoring frequency, scattered data, asynchronization, offline and the like, the pumping and multi-single-sensor integrated system of a shore cabinet online monitoring instrument has a complex structure, and the accuracy of the measurement mode is poor.
The specific technical scheme of the invention is as follows:
the invention provides a device for intermittently detecting a complex water body in situ based on a spectrum method, which comprises a shell, a light source, a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator, a third collimating lens group, a fourth collimating lens group, a second optical fiber, a fifth collimating lens group, a synchronous circuit board, a spectrum module and an upper computer, wherein the light source is arranged in the shell;
four vertical partition plates which are parallel to each other are arranged in the middle area of the shell, and the middle area is divided into three first areas, a second area and a third area which are isolated from each other by the four vertical partition plates; wherein, the second area is internally provided with a water containing groove to be measured which is communicated with the outside;
a third collimating lens group is horizontally arranged in the first area, and a fourth collimating lens group is horizontally arranged in the third area; two vertical partition plates positioned in the middle are respectively provided with a glass window; the third collimating lens group, the glass window and the fourth collimating lens group are coaxial;
the light source is arranged in the front end of the shell, and light beams emitted by the light source sequentially pass through the first collimating lens group, the first optical fiber, the second collimating lens group, the attenuator and the third collimating lens group to detect the water to be detected in the water-to-be-detected accommodating groove and then are conveyed to the spectrum module arranged in the rear end of the shell through the fourth collimating lens group, the second optical fiber and the fifth collimating lens group; the spectrum module acquires the spectrum signal of the detection light, and then carries out digital processing and uploads the acquired spectrum signal to an upper computer; the synchronous circuit board is respectively connected with the light source and the spectrum module to control the logic time sequence synchronization of the light source and the spectrum module.
Furthermore, in order to reduce the problem that underwater impurities are deposited on the glass window, so that the detection accuracy is influenced, the device also comprises a to-be-detected water optical path cleaning mechanism; the to-be-measured water optical path cleaning mechanism comprises a driving motor and an electric brush assembly; the driving motor is fixed on the outer wall of the shell outside the water containing groove to be detected; an output shaft of the driving motor is provided with an electric brush assembly; the electric brush component comprises an upper connecting rod and two lower brush heads connected with the upper connecting rod; one lower brush head is contacted with the vertical partition plate close to the second collimating lens group, and the other lower brush head is contacted with the vertical partition plate close to the fourth collimating lens group.
Further, in order to avoid or reduce the impurity of great granule and get into the water that awaits measuring and hold the inslot, influence the problem of monitoring accuracy, above-mentioned device still includes the filter screen, and the filter screen is installed the notch in water that awaits measuring holds the groove, and seted up power supply brush subassembly wobbling arc breach on the filter screen.
Further, the device also comprises a watertight joint; the spectrum module is communicated with the upper computer through a watertight joint.
Further, the shell comprises a front section sealing sleeve, a middle section sealing sleeve and a rear section sealing sleeve which are sequentially in threaded connection;
the light source, the first collimating lens group, the first optical fiber, the second collimating lens group and the attenuator are positioned in the front section mounting sleeve;
the third collimating lens group and the fourth collimating lens group are both positioned in the middle section sealing sleeve;
the second optical fiber, the fifth collimating lens group and the spectrum module are all positioned in the rear section sealing sleeve.
Furthermore, the front end of the front section mounting sleeve is designed to be anti-collision.
Further, the light output by the light source is ultraviolet light or visible light or near infrared light; the light wavelength range of the light source output is 165 nm-2200 nm.
Based on the structural description of the device, a method for detecting the device is introduced, and the specific steps are as follows:
step 1: obtaining the absorbance value of the spectrum test curve under the standard water environment
The detection device is arranged in the environment of standard water, continuous wide-spectrum light emitted by a light source sequentially passes through a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator and a third collimating lens group, then passes through external standard water in a water containing tank to be detected, then passes through a fourth collimating lens group, a second optical fiber and a fifth collimating lens group, enters a spectrum module, acquires spectrum signals, and then transmits the spectrum signals to an upper computer to obtain the absorbance value of a standard water corresponding to a spectrum test curve
Storing the value in an upper computer;
step 2: obtaining the absorbance value of the spectrum test curve under the actual water environment to be tested
The detection device is arranged in an actual water environment to be detected, continuous wide-spectrum light emitted by a light source sequentially passes through a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator and a third collimating lens group, then passes through actual water to be detected in a water containing tank to be detected, then passes through a fourth collimating lens group, a second optical fiber and a fifth collimating lens group, enters a spectrum module, obtains spectrum signals, and then is transmitted to an upper computer to obtain an absorbance value of a standard water corresponding to a spectrum test curve
And step 3: calculating the absorbance value of the corresponding spectral curve of the impurities in the water to be measured in the actual environment
The concrete formula is as follows:
and 4, step 4: absorbance value of corresponding spectral curve of impurities in water to be detected by upper computer based on Lambert beer law
And calculating to obtain the concentration result of the impurities in the water to be detected.
The invention has the beneficial effects that:
1. the in-situ detection device provided by the invention overcomes the defects of low monitoring frequency, asynchrony, off-line dispersion and the like caused by ex-situ measurement such as manual sampling and cabinet type pumping by the traditional chemical method, realizes in-situ acquisition of underwater continuous fine broad spectrum, breaks through the defect of single-spectrum single-component analysis by the traditional single-spectrum single-component analysis, has simple and compact structure and strong sealing property, overcomes the defects of the traditional multi-parameter water body component analysis instrument, and realizes the advantages of miniaturization, low power consumption, portability and the like.
2. The invention adopts the electric brush component, so that the detection light path has self-cleaning capability, and the influence on the accuracy of the detection result under severe environment is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic structural view of a middle section of a sealing sleeve;
FIG. 3 is a top view of the mid-section seal sleeve;
the reference numbers are as follows:
1-shell, 2-light source, 3-first collimating lens group, 4-first optical fiber, 5-second collimating lens group, 6-attenuator, 7-third collimating lens group, 8-fourth collimating lens group, 9-second optical fiber, 10-fifth collimating lens group, 11-synchronous circuit board, 12-spectrum module, 13-vertical partition board and 14-first region, 15-a second area, 16-a third area, 17-a water containing groove to be measured, 18-a glass window, 19-a watertight joint, 20-a front section sealing sleeve, 21-a middle section sealing sleeve, 22-a rear section sealing sleeve, 23-a driving motor, 24-an electric brush assembly, 25-an upper connecting rod, 26-a lower brush head, 27-a filter screen and 28-an arc notch.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1 and fig. 2, the present embodiment provides a specific structure of an apparatus for performing intermittent in-situ detection on a complex water body based on spectroscopy, including: the device comprises a shell 1, a light source 2, a first collimating lens group 3, a first optical fiber 4, a second collimating lens group 5, an attenuator 6, a third collimating lens group 7, a fourth collimating lens group 8, a second optical fiber 9, a fifth collimating lens group 10, a synchronous circuit board 11, a spectrum module 12 and an upper computer (not shown in the figure);
the functions of the parts are as follows:
the shell 1 realizes the fixation and protection of the integral components;
the light source 2 realizes the input of a reference wide-spectrum optical signal, and the output of the light source is photoetched to be ultraviolet light-visible light-near red light; the wavelength range of the output light of the light source is 165 nm-2200 nm;
the first collimating lens group 3 is used for realizing the light signal collimation output of the light source;
the first optical fiber 4 is used for realizing light transmission between the light source and the attenuator;
the second collimating lens group 5 is used for realizing the collimation of light in the attenuator;
the attenuator 6 is used for realizing the intensity adjustment of light intensity;
the third collimating lens group 7 is used for realizing the collimation output of the adjusted light intensity;
the fourth collimating lens group 8 is used for realizing the collimated output of the light after passing through the water to be detected;
the second optical fiber 9 realizes the transmission of light intensity after being absorbed by water;
the fifth collimating lens group 10 is used for realizing the collimation of the light beam after the absorption of the water body;
the spectrum module 12 is used for realizing acquisition and digital output of a spectrum signal of absorbed light, the spectrum acquisition principle can be in modes of cross dispersion, interference, separation dispersion and the like, and a typical spectrum measurement range is as follows: 185 nm-1100 nm;
the synchronous circuit board 11 realizes the synchronization of the light source and the trigger signal of the spectrum module.
The positions and the connection relations among the parts are as follows:
four parallel vertical partition plates 13 are arranged in the middle area of the shell 1, and the middle area is divided into three first areas 14, second areas 15 and third areas 16 which are isolated from each other by the four vertical partition plates 13; wherein, the second area 15 is a water containing groove 17 to be measured communicated with the outside;
a third collimating lens group 7 is horizontally arranged in the first area 14, and a fourth collimating lens group 8 is horizontally arranged in the third area 16; the two vertical partition plates 13 positioned in the middle are respectively provided with a glass window 18; the third collimating lens group 7, the glass window 18 and the fourth collimating lens group 8 are coaxial;
the light source 2 is arranged in the front end of the shell 1, and light beams emitted by the light source 2 sequentially pass through the first collimating lens group 3, the first optical fiber 4, the second collimating lens group 5, the attenuator 6 and the third collimating lens group 7 to detect the water to be detected in the water containing groove 17 to be detected, and then are transmitted to the spectrum module 12 arranged in the rear end of the shell 1 through the fourth collimating lens group 8, the second optical fiber 9 and the fifth collimating lens group 10; the spectrum module 12 acquires the spectrum signal of the detection light, then carries out digital processing and uploads the acquired spectrum signal to an upper computer (the uploading mode can be selected from wireless transmission and wired transmission, and when the wired transmission is carried out, the device also comprises a watertight connector 19; the synchronous circuit board is respectively connected with the light source and the spectrum module to control the logic time sequence synchronization of the light source and the spectrum module.
For convenience of processing and part assembly, the housing in this embodiment includes a front-section sealing sleeve 20, a middle-section sealing sleeve 1 and a rear-section sealing sleeve 22 which are sequentially connected by threads;
the light source 2, the first collimating lens group 3, the first optical fiber 4, the second collimating lens group 5 and the attenuator 6 are positioned in the front section mounting sleeve 20; the third collimating lens group 7 and the fourth collimating lens group 8 are both positioned in the middle section sealing sleeve 21; the second optical fiber 9, the fifth collimating lens group 10, the synchronous circuit board 11 and the spectrum module 12 are all located in the rear section sealing sleeve 22.
The above embodiment also makes the following optimization design:
1. in order to reduce the deposition of underwater impurities on the glass window and influence the detection accuracy, the device also comprises a to-be-detected water optical path cleaning mechanism; as shown in fig. 2 and 3, the optical path cleaning mechanism for water to be measured includes a driving motor 23 and a brush assembly 24; the driving motor 23 is fixed on the outer wall of the shell 1 outside the water containing groove 17 to be measured; a brush assembly 24 is arranged on an output shaft of the driving motor 23; the brush assembly 24 comprises an upper link 25 and two lower brush heads 26 connected to the upper link 25; one lower brush head 26 is in contact with the vertical partition plate close to the third collimating lens group 7, and the other lower brush head 26 is in contact with the vertical partition plate close to the fourth collimating lens group 8. The lower brush head 26 is driven to swing by the reciprocating rotation of the driving motor 23, so that the glass window 18 is cleaned.
2. In order to avoid or reduce the impurity of great granule and get into the water that awaits measuring and hold the inslot, influence the problem of monitoring accuracy, above-mentioned device still includes filter screen 27, as shown in fig. 2 and 3, filter screen 27 is installed on the notch of the water that awaits measuring holds groove 17, and has seted up power supply brush subassembly wobbling arc breach 28 on the filter screen 27.
3. The front end of the front section mounting sleeve is of an anti-collision design and is used for reducing impact when the device is placed into water.
The working principle of the embodiment is as follows:
1. the detection device is arranged in the environment of standard water, continuous wide-spectrum light emitted by a light source 2 passes through a first collimating lens group 3, a first optical fiber 4, a second collimating lens group 5, an attenuator 6 and a third collimating lens group 7 in sequence, then passes through external standard water in a water containing tank 17 to be detected, then enters a spectrum module 12 through a fourth collimating lens group 8, a second optical fiber 9 and a fifth collimating lens group 10, spectrum signals are obtained by the spectrum module 12, and are uploaded to an upper computer to obtain the absorbance value of the standard water corresponding to a spectrum test curve
Storing the value in an upper computer; in this step the absorbance values of the spectral test curves are assigned to the standard water
So as to be stored in the upper computer, therefore, the step is carried out only when the product is used for the first time, and the step 2 can be directly carried out in other using processes;
2. then the detection device is placed in the actual water environment to be detected, the continuous wide-spectrum light emitted by the light source 2 passes through the actual water to be detected in the water containing tank 18 to be detected after sequentially passing through the first collimating lens group 3, the first optical fiber 4, the second collimating lens group 5, the attenuator 6 and the third collimating lens group 7, then enters the spectrum module 12 after passing through the fourth collimating lens group 8, the second optical fiber 9 and the fifth collimating lens group 10, the spectrum signal is obtained by the spectrum module 12, and the spectrum signal is uploaded to the upper computer to obtain the absorbance value of the standard water corresponding to the spectrum test curve
3. Calculating the corresponding of impurities in water to be measured in actual environmentAbsorbance value of spectral curve
The concrete formula is as follows:
4. absorbance value of corresponding spectral curve of impurities in water to be detected by upper computer based on Lambert beer law
And calculating to obtain the concentration result of the impurities in the water to be detected.
The analysis of turbidity, chromaticity, nitrate nitrogen, ammonia nitrogen, nitrite nitrogen, Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), 254nm absorption coefficient, benzene, phenols, hydrocarbon organic matters and the like in the water to be detected can be realized through the obtained concentration result.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a device based on spectrum method carries out intermittent type formula normal position to complicated water and surveys which characterized in that: the device comprises a shell, a light source, a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator, a third collimating lens group, a fourth collimating lens group, a second optical fiber, a fifth collimating lens group, a synchronous circuit board, a spectrum module and an upper computer;
four vertical partition plates which are parallel to each other are arranged in the middle area of the shell, and the middle area is divided into three first areas, a second area and a third area which are isolated from each other by the four vertical partition plates; wherein, the second area is internally provided with a water containing groove to be measured which is communicated with the outside;
a third collimating lens group is horizontally arranged in the first area, and a fourth collimating lens group is horizontally arranged in the third area; two vertical partition plates positioned in the middle are respectively provided with a glass window; the third collimating lens group, the glass window and the fourth collimating lens group are coaxial;
the light source is arranged in the front end of the shell, and light beams emitted by the light source sequentially pass through the first collimating lens group, the first optical fiber, the second collimating lens group, the attenuator and the third collimating lens group to detect the water to be detected in the water-to-be-detected accommodating groove and then are conveyed to the spectrum module arranged in the rear end of the shell through the fourth collimating lens group, the second optical fiber and the fifth collimating lens group; the spectrum module acquires the spectrum signal of the detection light, and then carries out digital processing and uploads the acquired spectrum signal to an upper computer; the synchronous circuit board is respectively connected with the light source and the spectrum module to control the logic time sequence synchronization of the light source and the spectrum module.
2. The apparatus for intermittent in-situ spectroscopy-based detection of complex bodies of water of claim 1, wherein: the device also comprises a to-be-detected water light path cleaning mechanism; the to-be-measured water optical path cleaning mechanism comprises a driving motor and an electric brush assembly; the driving motor is fixed on the outer wall of the shell outside the water containing groove to be detected; an output shaft of the driving motor is provided with an electric brush assembly; the electric brush component comprises an upper connecting rod and two lower brush heads connected with the upper connecting rod; one lower brush head is contacted with the vertical partition plate close to the second collimating lens group, and the other lower brush head is contacted with the vertical partition plate close to the fourth collimating lens group.
3. The apparatus for intermittent in-situ spectroscopy-based detection of complex bodies of water of claim 2, wherein: still include the filter screen, the filter screen is installed the notch in the water holding tank that awaits measuring, and set up the wobbling arc breach of power supply brush subassembly on the filter screen.
4. The apparatus for intermittent in-situ spectroscopy-based detection of complex bodies of water of claim 3, wherein: the water-tight joint is also included; the spectrum module is communicated with the upper computer through a watertight joint.
5. The apparatus for batch-wise in-situ detection of complex bodies of water based on spectroscopy of claim 4, wherein: the shell comprises a front section sealing sleeve, a middle section sealing sleeve and a rear section sealing sleeve which are sequentially connected in a threaded manner;
the light source, the first collimating lens group, the first optical fiber, the second collimating lens group and the attenuator are positioned in the front section mounting sleeve;
the third collimating lens group and the fourth collimating lens group are both positioned in the middle section sealing sleeve;
the second optical fiber, the fifth collimating lens group and the spectrum module are all positioned in the rear section sealing sleeve.
6. The apparatus for intermittent in-situ spectroscopy-based detection of complex bodies of water of claim 5, wherein: the front end of the front section mounting sleeve is of an anti-collision design.
7. The apparatus for intermittent in-situ spectroscopy-based detection of complex bodies of water of claim 6, wherein: the light output by the light source is ultraviolet light or visible light or near infrared light; the light wavelength range of the light source output is 165 nm-2200 nm.
8. A method for intermittent in-situ detection of complex bodies of water based on spectroscopy, characterized in that detection is achieved by the following steps, using the device of claim 1:
step 1: obtaining the absorbance value A of the spectrum test curve under the standard water environment1；
The detection device is arranged in the environment of standard water, continuous wide-spectrum light emitted by the light source passes through the first collimating lens group, the first optical fiber, the second collimating lens group, the attenuator and the third collimating lens group in sequence, then passes through external standard water in the water containing tank to be detected, and then enters the spectrum module and the spectrum module to obtain light after passing through the fourth collimating lens group, the second optical fiber and the fifth collimating lens groupThe spectral signal is transmitted to an upper computer to obtain the absorbance value of the standard water corresponding to the spectral test curve
Storing the value in an upper computer;
step 2: obtaining the absorbance value of the spectrum test curve under the actual water environment to be tested
The detection device is arranged in an actual water environment to be detected, continuous wide-spectrum light emitted by a light source sequentially passes through a first collimating lens group, a first optical fiber, a second collimating lens group, an attenuator and a third collimating lens group, then passes through actual water to be detected in a water containing tank to be detected, then passes through a fourth collimating lens group, a second optical fiber and a fifth collimating lens group, enters a spectrum module, obtains spectrum signals, and then is transmitted to an upper computer to obtain an absorbance value of a standard water corresponding to a spectrum test curve
And step 3: calculating the absorbance value of the corresponding spectral curve of the impurities in the water to be measured in the actual environment
The concrete formula is as follows:
and 4, step 4: absorbance value of corresponding spectral curve of impurities in water to be detected by upper computer based on Lambert beer law
And calculating to obtain the concentration result of the impurities in the water to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182863.4A CN110887799A (en) | 2019-11-27 | 2019-11-27 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182863.4A CN110887799A (en) | 2019-11-27 | 2019-11-27 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110887799A true CN110887799A (en) | 2020-03-17 |
Family
ID=69749053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911182863.4A Pending CN110887799A (en) | 2019-11-27 | 2019-11-27 | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110887799A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113820276A (en) * | 2021-09-07 | 2021-12-21 | 煤炭科学研究总院 | Multi-channel combined miniature seawater absorption characteristic measuring device and mounting structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042965A (en) * | 2010-11-18 | 2011-05-04 | 上海衡伟信息技术有限公司 | On-line broad-spectrum water quality analyzer |
| CN103776787A (en) * | 2014-02-25 | 2014-05-07 | 杭州纳宏光电科技有限公司 | Double-spectrum water quality analyzer |
| CN205786295U (en) * | 2016-07-20 | 2016-12-07 | 中国科学院烟台海岸带研究所 | A kind of double light path water body environment on-line measurement device |
| CN206515232U (en) * | 2016-12-30 | 2017-09-22 | 美康（深圳）科技有限公司 | Water quality detected instrument |
| CN110208199A (en) * | 2019-03-06 | 2019-09-06 | 廊坊市慧璟科技有限公司 | One kind can be used for the device and method of ultraviolet in on-line determination water-visible absorption spectra |
-
2019
- 2019-11-27 CN CN201911182863.4A patent/CN110887799A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042965A (en) * | 2010-11-18 | 2011-05-04 | 上海衡伟信息技术有限公司 | On-line broad-spectrum water quality analyzer |
| CN103776787A (en) * | 2014-02-25 | 2014-05-07 | 杭州纳宏光电科技有限公司 | Double-spectrum water quality analyzer |
| CN205786295U (en) * | 2016-07-20 | 2016-12-07 | 中国科学院烟台海岸带研究所 | A kind of double light path water body environment on-line measurement device |
| CN206515232U (en) * | 2016-12-30 | 2017-09-22 | 美康（深圳）科技有限公司 | Water quality detected instrument |
| CN110208199A (en) * | 2019-03-06 | 2019-09-06 | 廊坊市慧璟科技有限公司 | One kind can be used for the device and method of ultraviolet in on-line determination water-visible absorption spectra |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113820276A (en) * | 2021-09-07 | 2021-12-21 | 煤炭科学研究总院 | Multi-channel combined miniature seawater absorption characteristic measuring device and mounting structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110887801B (en) | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method | |
| CN100529733C (en) | Non-contact COD/DOC water quality on-line monitoring method and device by spectrum method | |
| EP2267435B1 (en) | Interchangeable Tip-Open Cell Fluorometer | |
| Langergraber et al. | Monitoring of a paper mill wastewater treatment plant using UV/VIS spectroscopy | |
| CN101183071B (en) | Novel water quality analysis meter | |
| CN100578196C (en) | Method for measuring water body total nitrogen and total phosphorous by digestion spectrophotometry of supersonic wave cooperating with ozone | |
| CN102661923A (en) | Complex monitor for automatically monitoring multiple parameters of water on line | |
| CN102798602A (en) | Integrated dual-beam water quality COD on-line detection sensor | |
| CN110887799A (en) | Device and method for carrying out intermittent in-situ detection on complex water body based on spectrum method | |
| CN102253018A (en) | Throwing-into type fluorescence method water quality on-line analyzer | |
| RU2316755C2 (en) | Method and spectrometer for quantitative measurement of component in sample | |
| CN103575666A (en) | On-line photoelectric detection apparatus and detection method for residual concentration of corrosion inhibitor | |
| TWI477760B (en) | A changed optical path measureing device for component concentration of water and measureing method thereof | |
| CN114324166B (en) | Self-cleaning type fine spectrum water body parameter measuring device and method based on turbidity correction | |
| CN115931451A (en) | Sampling analysis unit suitable for surface water monitoring | |
| CN101183070A (en) | Bar-shape spectrophotometric device | |
| CN114835241B (en) | Real-time monitoring and ozone intelligent adding control method for refractory organic matters in sewage | |
| CN207623225U (en) | A kind of spectral analysis of fluids sampler | |
| CN115290587A (en) | Multichannel solution concentration detection method and device based on hollow optical fiber | |
| CN113310893B (en) | Optical path-variable multi-parameter water quality monitoring device and method based on spectroscopy | |
| CN105115918A (en) | Fast online pH value detecting device and method based on absorption spectrums | |
| CN206057167U (en) | Fresh logistics based on intelligent sealing tape lock is with bar-shaped water quality monitoring sensor | |
| CN215812413U (en) | Detect on-line monitoring device of quality of water | |
| CN112147101A (en) | Portable water quality analyzer and method for soluble organic matters and nitrate nitrogen | |
| CN218938118U (en) | Portable spectrophotometer light path system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200317 |
|
| RJ01 | Rejection of invention patent application after publication |