CN202002881U - Multispectral-based multipoint-sampling multi-parameter water quality online analysis system - Google Patents
Multispectral-based multipoint-sampling multi-parameter water quality online analysis system Download PDFInfo
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Abstract
The utility model discloses a multispectral-based multipoint-sampling multi-parameter water quality online analysis system, which comprises an optical system, a water path system, and a detection control system, wherein by adoption of a multi-wavelength laser device, a pulse xenon lamp light source and a charge coupled device (CCD) spectral detector, the optical system scans emission spectrums such as an ultraviolet visible transmission spectrum, a fluorescence spectrum, a Raman spectrum and the like of a water sample to be detected, and converts the emission spectrum into a digital signal; by adoption of a multipoint-sampling design, the water path system realizes acquisition of spectral data by controlling switching on and off of a water pump and an electromagnetic valve after quantitative sewage and quantitative clean water enter a sampling device; meanwhile, the water path system has an automatic cleaning function of a sewage pipeline system; in the detection control system, an industrial personal computer is adopted and used as a core processing unit; and the whole system can run automatically and continuously, and is applicable to online analysis.
Description
Technical field
The utility model belongs to technical field of resource environments, is used for the on-line quick detection of water quality parameter, is meant a kind of based on multispectral multi-point sampling multi-parameter water quality on-line analysis system especially.
Background technology
Organic contaminant overall target (as TOC, COD, BOD, DOC and permanganate index etc.) never ipsilateral has reflected that water body is subjected to the aggregate level of organic pollutants, being the important indicator of weighing the water pollution degree, also is the quantitative appraisal foundation of " reduction of discharging " and " overall control " of country's promulgation.In recent years, the development of water quality parameter in-line analyzer (mainly detecting COD, TOC etc.) is subjected to extensive attention, and its product category, model are numerous.Based on the difference of measuring principle, these in-line analyzers can divide two classes basically: based on the online Water Test Kits of chemical method, and based on the online Water Test Kits of optical means.Compare with chemical analysis method, Optical Analysis Method is carried out qualitative and quantitative analysis according to spectroscopic data to the classification and the overall target of organic contaminant, and it has, and no chemical reagent pollutes, analysis speed is fast, systematic running cost is low, be easy to be implemented in remarkable advantage such as line analysis.
Come into the market at present based on the online Water Test Kits of optical measurement principle mainly based on ultraviolet/visible (UV/Vis) absorbance or ultraviolet/visible absorption spectra analytical approach.But existing ultraviolet/visible absorption spectra in-line analyzer is owing to be difficult to adapt to sewage dissimilar and different pollution levels, add that on-line analysis device detecting unit is subject to sewage pollution, cause limitations such as analyser poor accuracy, maintenance workload are big, be difficult to satisfy the extensive water quality needs of monitoring in real time.In view of the analysis to measure precision deficiency of the online Water Test Kits of ultraviolet absorption method, Recent study personnel begin to turn to and have more highly sensitive fluorescence method.But the weak point of fluorescence spectrum is for existing labile factors such as cancellation, self-absorption, interior optical filtering, also contains interference such as the Raman scattering of water and Rayleigh scattering.
Existing single ultraviolet absorption spectroscopy or fluorescent spectrometry are used for water quality organic contamination comprehensive index analysis all weak point, and on the other hand, two kinds of spectrum exist certain correlativity and complementarity again.The prerequisite of organism generation fluorescence is to absorb exciting light in the water, so can produce the organism of fluorescence absorption peak is arranged all on ultraviolet spectrum.Because the organism of suspension or some kind can produce the very approximate absorption peak of intensity on the ultraviolet spectrum of same wavelength, only can not distinguish the kind of these materials with ultraviolet spectrum; But they can produce different fluorescence spectrums under the UV optical excitation, thereby have improved the resolution of water analysis.In addition, a major defect of fluorescence spectrum is an instability, and this respect ultraviolet spectrum can work the effect of remedying.
Application number is that 200810060383.6 utility model patent " a kind of multi-source optical spectrum syncretizing portable water quality analysis meter " discloses a kind of multi-source optical spectrum syncretizing portable water quality analysis meter, it comprises optical system and detects control system, adopt integration laser, deuterium halogen lamp light source and two spectroscopic detector scan the UV, visible light transmitted spectrum and the fluorescence of water sample to be measured, emission spectrum such as Raman, adopt the embedded data processing unit to calculate the water analysis desired value according to the water sample spectroscopic data that collects, and control the work of whole instrument, realize that by display screen and keyboard the user's is mutual.Since adopt lithium battery power supply, special designs such as 360 ° of receptions of emission light, its compact conformation, use is easy to carry.Because the parts that contact with testing sample in this utility model patent only have sample cell, the water circuit system that does not have automatic water inlet, draining, dilution proportioning, cleaning, thereby only can offline inspection use, then powerless to the on-line monitoring of the occasion of the long-term continuous monitoring of needs such as sewage treatment plant etc.; And since in the optical system of this utility model patent to the emission gloss receive mode that becomes 360 ° of angle directions with incident light of sample, need adopt line array CCD and area array CCD two cover spectral detection systems simultaneously, its light path system is comparatively complicated, and cost is higher; In addition, this utility model patent adopts the laser instrument of 405nm, 532nm, 635nm, 650nm, 660nm, 690nm, 785nm, 808nm, eight wavelength of 830nm to the exciting light of emission spectrum such as fluorescence excitation, Raman, its wavelength coverage is in visible light and even near infrared range, because most required excitation wavelength range of material that produce fluorescence are the UV, visible light wave band, so the laser instrument of this utility model is unfavorable for the detection of fluorescence emission spectrum.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, provides a kind of based on multispectral multi-point sampling multi-parameter water quality on-line analysis system.
The purpose of this utility model is achieved through the following technical solutions: a kind of based on multispectral multi-point sampling multi-parameter water quality on-line analysis system, it comprises optical system, water circuit system and detection control system.
Wherein, optical system comprises: pulse xenon lamp, first concave mirror, first optical filter, first convex lens, first optical fiber, second convex lens, sample cell, the 3rd convex lens, second optical fiber, slit, second optical filter, second concave mirror, grating, charge coupled cell, multiple-wavelength laser, the 3rd optical fiber and the 4th convex lens etc.; Pulse xenon lamp is positioned at the concave surface focuses place of first concave mirror, first concave mirror and first optical filter, first convex lens are arranged in order with axle horizontal, the two ends of first optical fiber link to each other with second convex lens with first convex lens respectively, second convex lens and sample cell, the 3rd convex lens are arranged in order with axle horizontal, the 4th convex lens and sample cell be arranged in order with axle horizontal and with second convex lens, sample cell, the axle of the 3rd convex lens is perpendicular, the two ends of second optical fiber link to each other with slit with the 3rd convex lens respectively, the slit and second optical filter are arranged in order with axle horizontal, and the two ends of the 3rd optical fiber link to each other with the 4th convex lens with multiple-wavelength laser respectively.
Water circuit system comprises: several unit that intake, the sewage Measuring glass, sewage main sewer road, the clear water circulation groove, the clear water intake pump, cleaning politics, economics, organization, and ideology water entering water electromagnetic valve, the 5th clear water entering water electromagnetic valve, the 6th clear water entering water electromagnetic valve, the clear water Measuring glass, the 4th sewage overflow pipeline, the first clear water overflow passage, the second clear water overflow passage, the first hybrid electromagnetic valve, the second hybrid electromagnetic valve, mixing channel, the sample entering water electromagnetic valve, sample cell, the sample drain solenoid valve, total freeing port, the first sample overflow passage and the second sample overflow passage etc.;
Each water inlet unit comprises: first sewage inlet, the first sewage intake pump, first sump, the first sewage entering water electromagnetic valve, the first sewage drainage solenoid valve, the first sewage overflow pipeline, the first clear water entering water electromagnetic valve; Wherein, one end of the first sewage intake pump connects first sewage inlet, the other end connects first sump, the first sewage entering water electromagnetic valve, the first sewage drainage solenoid valve, the first sewage overflow pipeline, the first clear water entering water electromagnetic valve is connected with first sump respectively, the other end of the first sewage entering water electromagnetic valve links to each other with the sewage Measuring glass of water inlet outside the unit, the other end of the first sewage drainage solenoid valve and the first sewage overflow pipeline links to each other with the sewage main sewer road of water inlet outside the unit, the other end of the first clear water entering water electromagnetic valve links to each other with the clear water intake pump of water inlet outside the unit, and the first sewage drainage solenoid valve is positioned under the bottom of first sump; The sewage Measuring glass respectively with the first sewage entering water electromagnetic valve, the second sewage entering water electromagnetic valve, the 3rd sewage entering water electromagnetic valve, the 5th clear water entering water electromagnetic valve, the 4th sewage overflow pipeline, the first hybrid electromagnetic valve links to each other, the clear water Measuring glass respectively with cleaning politics, economics, organization, and ideology water entering water electromagnetic valve, the first clear water overflow passage, the second hybrid electromagnetic valve links to each other, mixing channel respectively with the 6th clear water entering water electromagnetic valve, the first hybrid electromagnetic valve, the second hybrid electromagnetic valve, the sample entering water electromagnetic valve, the first sample overflow passage links to each other, sample cell respectively with the sample entering water electromagnetic valve, the sample drain solenoid valve, the second sample overflow passage links to each other, total freeing port respectively with sewage main sewer road, the first sample overflow passage, the second sample overflow passage links to each other, sewage Measuring glass and clear water Measuring glass are horizontal, sewage Measuring glass and clear water Measuring glass are positioned at first sump, second sump, under the bottom of the 3rd sump, the first hybrid electromagnetic valve and the second hybrid electromagnetic valve lay respectively under the bottom of sewage Measuring glass and clear water Measuring glass, mixing channel is positioned under the first hybrid electromagnetic valve and the second hybrid electromagnetic valve, the sample entering water electromagnetic valve is positioned under the bottom of mixing channel, sample cell is positioned under the bottom of sample entering water electromagnetic valve, the sample drain solenoid valve is positioned under the bottom of sample cell, and total freeing port is positioned at sewage main sewer road, the first sample overflow passage, the second sample overflow passage, under the bottom of sample drain solenoid valve.
The detection control system comprises: control module industrial computer, LCD display, keyboard and mouse, power module, spectroscopic detector and digital I/O USB module etc., wherein, LCD display, keyboard and mouse, power module, spectroscopic detector and digital I/O USB module link to each other with the control module industrial computer respectively; The multiple-wavelength laser of optical system links to each other with digital I/O USB module with power module respectively, and the pulse xenon lamp of optical system links to each other with the control module industrial computer with power module respectively; Each water pump of water circuit system links to each other with digital I/O USB module with power module respectively with solenoid valve; The sample cell of water circuit system links to each other with the multiple-wavelength laser of optical system, pulse xenon lamp and the spectroscopic detector that detects control system respectively.
The beneficial effects of the utility model are, a kind of based on multispectral multi-point sampling multi-parameter water quality on-line analysis system, adopt UV, visible light (UV/Vis) transmitted spectrum and emission spectrum such as fluorescence, Raman simultaneously, multiple organic contaminant comprehensive parameters to water quality carries out on-line analysis, make full use of ultraviolet and fluorescence spectrum advantage separately, realize message complementary sense, obtain more comprehensively, analyze accurately, thereby improve the precision of prediction of organic contaminant parameter water quality.This system's multi-point sampling and full-automatic design need to be specially adapted to many places that the application demand in the places such as sewage treatment plant of water quality monitoring site is set.
Description of drawings
Fig. 1 is based on the optical system configuration composition of multispectral multi-point sampling multi-parameter water quality on-line analysis system;
Fig. 2 is based on the water circuit system structural drawing of multispectral multi-point sampling multi-parameter water quality on-line analysis system;
Fig. 3 is based on the detection control system structural drawing of multispectral multi-point sampling multi-parameter water quality on-line analysis system;
Fig. 4 is an analytic system workflow diagram of the present utility model;
Among the figure, pulse xenon lamp 1, first concave mirror 2, first optical filter 3, first convex lens 4, first optical fiber 5, second convex lens 6, sample cell 7, the 3rd convex lens 8, second optical fiber 9, slit 10, second optical filter 11, second concave mirror 12, grating 13, charge coupled cell 14, multiple-wavelength laser 15, the 3rd optical fiber 16, the 4th convex lens 17, first sewage inlet 18 of multi-point sampling, second sewage inlet 19, the 3rd sewage inlet 20, the first sewage intake pump 21, the second sewage intake pump 22, the 3rd sewage intake pump 23, first sump 24, second sump 25, the 3rd sump 26, the first sewage entering water electromagnetic valve 27, the second sewage entering water electromagnetic valve 28, the 3rd sewage entering water electromagnetic valve 29, the first sewage drainage solenoid valve 30, the second sewage drainage solenoid valve 31, the 3rd sewage drainage solenoid valve 32, sewage Measuring glass 33, the first sewage overflow pipeline 34, the second sewage overflow pipeline 35, the 3rd sewage overflow pipeline 36, sewage main sewer road 37, clear water circulation groove 38, clear water intake pump 39, the first clear water entering water electromagnetic valve 40, the second clear water entering water electromagnetic valve 41, the 3rd clear water entering water electromagnetic valve 42, cleaning politics, economics, organization, and ideology water entering water electromagnetic valve 43, the 5th clear water entering water electromagnetic valve 44, the 6th clear water entering water electromagnetic valve 45, clear water Measuring glass 46, the 4th sewage overflow pipeline 47, the first clear water overflow passage 48, the second clear water overflow passage 49, the first hybrid electromagnetic valve 50, the second hybrid electromagnetic valve 51, mixing channel 52, sample entering water electromagnetic valve 53, sample drain solenoid valve 54, total freeing port 55, the first sample overflow passage 56, the second sample overflow passage 57.
Embodiment
The utility model comprises based on multispectral multi-point sampling multi-parameter water quality on-line analysis system: optical system, water circuit system and detection control system.Wherein optical system realizes from light source luminescent, irradiation sample to a series of functions such as transmitted light and radiative receptions such as fluorescence, Raman; Water circuit system links to each other with optical system, realizes water inlet, Overflow drainage, quantitatively dilutes functions such as proportioning, cleaning; Detect control system and link to each other with water circuit system with optical system respectively, realize each parts in the detection to spectral data signal, the assay value of calculating water quality parameter, control optical system and the water circuit system operation and the function such as mutual by LCD display, keyboard and mouse realization and user automatically.
As shown in Figure 1, optical system comprises: pulse xenon lamp 1, first concave mirror 2, first optical filter 3, first convex lens 4, first optical fiber 5, second convex lens 6, sample cell 7, the 3rd convex lens 8, second optical fiber 9, slit 10, second optical filter 11, second concave mirror 12, grating 13, charge coupled cell 14, multiple-wavelength laser 15, the 3rd optical fiber 16, the 4th convex lens 17.
Close position among Fig. 1 between each parts: pulse xenon lamp 1 is positioned at the concave surface focuses place of first concave mirror 2, first concave mirror 2 and first optical filter 3, first convex lens 4 are arranged in order with axle horizontal, the two ends of first optical fiber 5 link to each other with second convex lens 6 with first convex lens 4 respectively, sample cell 7 is overlooked and is square, second convex lens 6 and sample cell 7, the 3rd convex lens 8 are arranged in order with axle horizontal, the 4th convex lens 17 be arranged in order with axle horizontal with sample cell 7 and with second convex lens 6, sample cell 7, the axle of the 3rd convex lens 8 is perpendicular, the two ends of second optical fiber 9 link to each other with slit 10 with the 3rd convex lens 8 respectively, the slit 10 and second optical filter 11 are arranged in order with axle horizontal, and the two ends of the 3rd optical fiber 16 link to each other with the 4th convex lens 17 with multiple-wavelength laser 15 respectively.
The ultraviolet-visible that pulse xenon lamp 1 sends among Fig. 1 becomes directional light by 2 reflections of first concave mirror, directional light is sent into first optical fiber 5 by 3 filtering of first optical filter after first convex lens 4 focus on, become directional light by second convex lens 6 and shine sample cell 7, transmitted light is becoming 180 ° of direction places to send into second optical fiber 9 by the 3rd convex lens 8 collectiong focusings with incident light, arrive slit 10, after transferring directional light to by second concave mirror 12 behind second optical filter 11, shine beam split on the grating 13, receive by charge coupled cell 14 at last and detect, read by detection system after becoming digital signal; Multiple-wavelength laser 15 is by 266nm, 355nm, the combination of the laser instrument of wavelength forms in three UV, visible light wavelength band of 532nm, the laser that is sent by multiple-wavelength laser 15 is sent into sample cell 7 irradiation samples after being converted into directional light by the 4th convex lens 17 behind the 3rd optical fiber 16, becoming with incident light on 90 ° of directions, the fluorescence of sample, emission light such as Raman scattering are delivered to slit 10 to second optical fiber 9 after the 3rd convex lens 8 focus on, after 11 filtering of second optical filter, reflexed to beam split on the grating 13 by second concave mirror 12, receive by charge coupled cell 14 at last and detect, read by detection system after becoming digital signal.After the emission light of the laser excitation of a wavelength of multiple-wavelength laser detected and finishes, control system was switched next excitation wavelength according to plug-in, all excited to measure up to the laser of a plurality of wavelength to finish.
As shown in Figure 2, the water circuit system based on multispectral multi-point sampling multi-parameter water quality on-line analysis system comprises: several unit that intake, sewage Measuring glass 33, sewage main sewer road 37, clear water circulation groove 38, clear water intake pump 39, cleaning politics, economics, organization, and ideology water entering water electromagnetic valve 43, the 5th clear water entering water electromagnetic valve 44, the 6th clear water entering water electromagnetic valve 45, clear water Measuring glass 46, the 4th sewage overflow pipeline 47, the first clear water overflow passage 48, the second clear water overflow passage 49, the first hybrid electromagnetic valve 50, the second hybrid electromagnetic valve 51, mixing channel 52, sample entering water electromagnetic valve 53, sample cell 7, sample drain solenoid valve 54, total freeing port 55, the first sample overflow passage 56, the second sample overflow passage 57.
Among the embodiment as shown in Figure 2, three sampled points are arranged, thus three water inlet unit are arranged, but the utility model is not limited thereto.Each water inlet cellular construction is identical, with the first water inlet unit is example, and the first water inlet unit comprises first sewage inlet 18, the first sewage intake pump 21, first sump 24, the first sewage entering water electromagnetic valve 27, the first sewage drainage solenoid valve 30, the first sewage overflow pipeline 34, the first clear water entering water electromagnetic valve 40.Connection between first each parts of water inlet unit is closed with the position and is: an end of the first sewage intake pump 21 is connected first sewage inlet 18, the other end connects first sump 24, the first sewage entering water electromagnetic valve 27, the first sewage drainage solenoid valve 30, the first sewage overflow pipeline 34, the first clear water entering water electromagnetic valve 40 is connected with first sump 24 respectively, wherein the other end of the first sewage entering water electromagnetic valve 27 links to each other with the sewage Measuring glass 33 of water inlet outside the unit, the other end of the first sewage drainage solenoid valve 30 and the first sewage overflow pipeline 34 links to each other with the sewage main sewer road 37 of water inlet outside the unit, the other end of the first clear water entering water electromagnetic valve 40 links to each other with the clear water intake pump 39 of water inlet outside the unit, and the first sewage drainage solenoid valve 30 is positioned under the bottom of first sump 24.
Among Fig. 2 except that the water inlet unit, close connection between all the other each parts and position: sewage Measuring glass 33 respectively with the first sewage entering water electromagnetic valve 27, the second sewage entering water electromagnetic valve 28, the 3rd sewage entering water electromagnetic valve 29, the 5th clear water entering water electromagnetic valve 44, the 4th sewage overflow pipeline 47, the first hybrid electromagnetic valve 50 links to each other, clear water Measuring glass 46 respectively with cleaning politics, economics, organization, and ideology water entering water electromagnetic valve 43, the first clear water overflow passage 48, the second hybrid electromagnetic valve 51 links to each other, mixing channel 52 respectively with the 6th clear water entering water electromagnetic valve 45, the first hybrid electromagnetic valve 50, the second hybrid electromagnetic valve 51, sample entering water electromagnetic valve 53, the first sample overflow passage 56 links to each other, sample cell 7 respectively with sample entering water electromagnetic valve 53, sample drain solenoid valve 54, the second sample overflow passage 57 links to each other, total freeing port 55 respectively with sewage main sewer road 37, the first sample overflow passage 56, the second sample overflow passage 57 links to each other, sewage Measuring glass 33 and clear water Measuring glass 46 are horizontal, sewage Measuring glass 33 and clear water Measuring glass 46 are positioned at first sump 24, second sump 25, under the bottom of the 3rd sump 26, the first hybrid electromagnetic valve 50 and the second hybrid electromagnetic valve 51 lay respectively under the bottom of sewage Measuring glass 33 and clear water Measuring glass 46, mixing channel 52 is positioned under the first hybrid electromagnetic valve 50 and the second hybrid electromagnetic valve 51, sample entering water electromagnetic valve 53 is positioned under the bottom of mixing channel 52, sample cell 7 is positioned under the bottom of sample entering water electromagnetic valve 53, sample drain solenoid valve 54 is positioned under the bottom of sample cell 7, and total freeing port 55 is positioned at sewage main sewer road 37, the first sample overflow passage 56, the second sample overflow passage 57, under the bottom of sample drain solenoid valve 54.
Be example with three sampled points among Fig. 2, at first, control system is selected current sampling point according to plug-in, when for example selecting first sampled point, by opening the first sewage intake pump 21, the sewage at first water inlet, 18 places is extracted to first sump 24, by switch control to the first sewage entering water electromagnetic valve 27 and the first sewage drainage solenoid valve 30, make selecteed sampled point the sewage sample flow speed stability enter sewage Measuring glass 33, unnecessary sewage is by opening the first sewage drainage solenoid valve 30 or by the first sewage overflow pipeline 34, entering total freeing port 55 through sewage main sewer road 37 and drained; Simultaneously, control system is set the proportioning of sewage and clear water according to the water quality parameter scope of different mining sampling point sewage, and from clear water circulation groove 38, pass through clear water intake pump 39 according to proportioning and extract the dilution clear water, opening cleaning politics, economics, organization, and ideology water water intaking valve 40 adds in the clear water Measuring glass 46, unnecessary sewage sample in sewage Measuring glass 33 and the clear water Measuring glass 46 and clear water are drained by the 4th sewage overflow pipeline 47 and the first clear water overflow passage 48 respectively, wherein unnecessary sewage sample finally enters total freeing port 55 through sewage main sewer road 37 is drained, and unnecessary clear water then flows back to clear water circulation groove 38; Then, after treating that sewage sample in sewage Measuring glass 33 and the clear water Measuring glass 46 and clear water reach stable proportioning volume, control system opens the first hybrid electromagnetic valve 50 and the second hybrid electromagnetic valve 51 adds the two in the mixing channel 52, after treating that sample mix is uniform and stable, the sample that unlatching sample entering water electromagnetic valve 53 will dilute and mix is sent into sample cell 7 and is carried out the collection of optical detection and spectroscopic data, detect end back unlatching sample drain solenoid valve 54 sample is drained by total freeing port 55, wherein overflow then respectively by the first sample overflow passage 56 if any sample in mixing channel 52 and the sample cell 7, the second sample overflow passage 57 enters total freeing port 55 and is drained.In addition, the cleaning process of plumbing drain system is: control system extracts the cleaning clear water by opening clear water intake pump 39, by controlling the first clear water entering water electromagnetic valve 40, the second clear water entering water electromagnetic valve 41, the 3rd clear water entering water electromagnetic valve 42, the 5th clear water entering water electromagnetic valve 44, the switch of the 6th clear water entering water electromagnetic valve 45, with the control first sewage drainage solenoid valve 30, the second sewage drainage solenoid valve 31, the 3rd sewage drainage solenoid valve 32, hybrid electromagnetic valve 50, sample entering water electromagnetic valve 53, the switch of sample drain solenoid valve 54, clear water is sent into first sump 24 respectively, second sump 25, the 3rd sump 26, sewage Measuring glass 33, carry out the cleaning of plumbing drain system in mixing channel 52 and the sample cell 7, the water after the cleaning finally enters total freeing port 55 and is drained.
As shown in Figure 3, the detection control system based on multispectral multi-point sampling multi-parameter water quality on-line analysis system comprises: control module industrial computer, LCD display, keyboard and mouse, power module, spectroscopic detector, digital I/O USB module.Annexation between each parts is: LCD display, keyboard and mouse, power module, spectroscopic detector and digital I/O USB module link to each other with the control module industrial computer respectively; The multiple-wavelength laser of optical system links to each other with digital I/O USB module with power module respectively, and the pulse xenon lamp of optical system links to each other with the control module industrial computer with power module respectively; Each water pump of water circuit system links to each other with digital I/O USB module with power module respectively with solenoid valve; The sample cell of water circuit system links to each other with the multiple-wavelength laser of optical system, pulse xenon lamp and the spectroscopic detector that detects control system respectively.
Wherein industrial computer is the maincenter of whole detection control system, control the startup and the operation of each module, inline operations system and multispectral multi-parameter water quality on-line analysis software, provide data-interface to use for two groups of light sources and spectroscopic detector, various overvoltages, overcurrent protection are provided simultaneously, guarantee the circuit safety of instrument; LCD display, keyboard and mouse are and the equipment of user interactions that the user sends various command by the keyboard operation plate, reads measurement result by LCD display, obtains operation indicating; Power module is the total system power supply under the control system effect; To the multiple-wavelength laser of optical system, send instruction by the control module industrial computer by digital I/O USB module, realize switch and power control and wavelength switching to multiple-wavelength laser; Xenon flash light source to optical system, send instruction by the control module industrial computer by USB interface, realize the soft switch and the power control of light path, so that and excite-launch the light path timesharing to measure, and, adjust light source power and integral time so that obtain appropriate signal intensity according to the spectroscopic data that spectroscopic detector feeds back; Spectroscopic detector receives the instruction that detects control system and regularly the spectroscopic data of gathering is uploaded to the control module industrial computer by USB interface; To each water pump and the solenoid valve of water circuit system, send instruction by the control module industrial computer by digital I/O USB module, realize the switch control of each water pump and solenoid valve.
As shown in Figure 4, analytic system workflow of the present utility model is: the user is by the start key, and system begins to start, and simultaneously, the transmitted light source pulse xenon lamp is lighted, and from line stabilization.After the system start-up, program is sent instruction initialization lcd screen, digital I/O USB module, spectroscopic detector, asks the initial settings such as proportioning value of user's affirmation as sampling time interval, multi-point sampling then, and system enters holding state afterwards.If the detection time of setting to or the user select to begin detection by keyboard and mouse, then analytic system is started working.At first carry out pipeline and clean, select sewage sampled point n water inlet then and adopt clear water to dilute proportioning and send into sample cell, excite-launch the light light path to start working afterwards, detect the emission spectrum signal according to the setting of control system.When emission spectrum detect finish after, system judges that whole emission spectrum detect and whether finish (multiple-wavelength laser that forms with the laser instrument combination of 266nm, 355nm, three wavelength of 532nm is an example, judges that then laser instrument switches whether key word k is 3).If emission spectrum detects and does not finish, then put laser instrument and switch key word k=k+1, turn off original laser instrument, light next laser instrument, after the change excitation wavelength, detect once more, store; If emission spectrum detects and finishes, then start transmitted spectrum and detect, the record transmittance spectra data.After a sample detection is finished, to detect data sends into industrial computer and detects and to carry out Model Calculation in the control system and handle, obtain the detected value of a plurality of water quality parameters such as COD, TOC, send lcd screen to show measurement result, simultaneity factor judges whether whole sewage sampled points detections are finished (with three sampled points is example, judges that then sampled point switches whether key word n is 3).If sampled point does not detect as yet and finishes, then put sampled point and switch key word n=n+1, begin water inlet and testing process to a new sampled point; If all sampled point has all detected and finished, then system is back to holding state, waits for that sampling instant next time or user send new instruction.
Claims (1)
1. one kind based on multispectral multi-point sampling multi-parameter water quality on-line analysis system, it is characterized in that it comprises optical system, water circuit system and detection control system;
Wherein, optical system comprises: pulse xenon lamp (1), first concave mirror (2), first optical filter (3), first convex lens (4), first optical fiber (5), second convex lens (6), sample cell (7), the 3rd convex lens (8), second optical fiber (9), slit (10), second optical filter (11), second concave mirror (12), grating (13), charge coupled cell (14), multiple-wavelength laser (15), the 3rd optical fiber (16) and the 4th convex lens (17); Pulse xenon lamp (1) is positioned at the concave surface focuses place of first concave mirror (2), first concave mirror (2) and first optical filter (3), first convex lens (4) are arranged in order with axle horizontal, the two ends of first optical fiber (5) link to each other with second convex lens (6) with first convex lens (4) respectively, second convex lens (6) and sample cell (7), the 3rd convex lens (8) are arranged in order with axle horizontal, the 4th convex lens (17) and sample cell (7) be arranged in order with axle horizontal and with second convex lens (6), sample cell (7), the axle of the 3rd convex lens (8) is perpendicular, the two ends of second optical fiber (9) link to each other with slit (10) with the 3rd convex lens (8) respectively, slit (10) is arranged in order with axle horizontal with second optical filter (11), and the two ends of the 3rd optical fiber (16) link to each other with the 4th convex lens (17) with multiple-wavelength laser (15) respectively;
Water circuit system comprises: several unit that intake, sewage Measuring glass (33), sewage main sewer road (37), clear water circulation groove (38), clear water intake pump (39), cleaning politics, economics, organization, and ideology water entering water electromagnetic valve (43), the 5th clear water entering water electromagnetic valve (44), the 6th clear water entering water electromagnetic valve (45), clear water Measuring glass (46), the 4th sewage overflow pipeline (47), the first clear water overflow passage (48), the second clear water overflow passage (49), the first hybrid electromagnetic valve (50), the second hybrid electromagnetic valve (51), mixing channel (52), sample entering water electromagnetic valve (53), sample cell (7), sample drain solenoid valve (54), total freeing port (55), the first sample overflow passage (56) and the second sample overflow passage (57);
Each water inlet unit comprises: first sewage inlet (18), the first sewage intake pump (21), first sump (24), the first sewage entering water electromagnetic valve (27), the first sewage drainage solenoid valve (30), the first sewage overflow pipeline (34), the first clear water entering water electromagnetic valve (40); Wherein, one end of the first sewage intake pump (21) connects first sewage inlet (18), the other end connects first sump (24), the first sewage entering water electromagnetic valve (27), the first sewage drainage solenoid valve (30), the first sewage overflow pipeline (34), the first clear water entering water electromagnetic valve (40) is connected with first sump (24) respectively, the other end of the first sewage entering water electromagnetic valve (27) links to each other with the sewage Measuring glass (33) of water inlet outside the unit, the other end of the first sewage drainage solenoid valve (30) and the first sewage overflow pipeline (34) links to each other with the sewage main sewer road (37) of water inlet outside the unit, the other end of the first clear water entering water electromagnetic valve (40) links to each other with the clear water intake pump (39) of water inlet outside the unit, and the first sewage drainage solenoid valve (30) is positioned under the bottom of first sump (24); Sewage Measuring glass (33) respectively with the first sewage entering water electromagnetic valve (27), the second sewage entering water electromagnetic valve (28), the 3rd sewage entering water electromagnetic valve (29), the 5th clear water entering water electromagnetic valve (44), the 4th sewage overflow pipeline (47), the first hybrid electromagnetic valve (50) links to each other, clear water Measuring glass (46) respectively with cleaning politics, economics, organization, and ideology water entering water electromagnetic valve (43), the first clear water overflow passage (48), the second hybrid electromagnetic valve (51) links to each other, mixing channel (52) respectively with the 6th clear water entering water electromagnetic valve (45), the first hybrid electromagnetic valve (50), the second hybrid electromagnetic valve (51), sample entering water electromagnetic valve (53), the first sample overflow passage (56) links to each other, sample cell (7) respectively with sample entering water electromagnetic valve (53), sample drain solenoid valve (54), the second sample overflow passage (57) links to each other, total freeing port (55) respectively with sewage main sewer road (37), the first sample overflow passage (56), the second sample overflow passage (57) links to each other, sewage Measuring glass (33) and clear water Measuring glass (46) are horizontal, sewage Measuring glass (33) and clear water Measuring glass (46) are positioned at first sump (24), second sump (25), under the bottom of the 3rd sump (26), the first hybrid electromagnetic valve (50) and the second hybrid electromagnetic valve (51) lay respectively under the bottom of sewage Measuring glass (33) and clear water Measuring glass (46), mixing channel (52) is positioned under the first hybrid electromagnetic valve (50) and the second hybrid electromagnetic valve (51), sample entering water electromagnetic valve (53) is positioned under the bottom of mixing channel (52), sample cell (7) is positioned under the bottom of sample entering water electromagnetic valve (53), sample drain solenoid valve (54) is positioned under the bottom of sample cell (7), and total freeing port (55) is positioned at sewage main sewer road (37), the first sample overflow passage (56), the second sample overflow passage (57), under the bottom of sample drain solenoid valve (54);
The detection control system comprises: control module industrial computer, LCD display, keyboard and mouse, power module, spectroscopic detector and digital I/O USB module, wherein, LCD display, keyboard and mouse, power module, spectroscopic detector and digital I/O USB module link to each other with the control module industrial computer respectively; The multiple-wavelength laser of optical system links to each other with digital I/O USB module with power module respectively, and the pulse xenon lamp of optical system links to each other with the control module industrial computer with power module respectively; Each water pump of water circuit system links to each other with digital I/O USB module with power module respectively with solenoid valve; The sample cell of water circuit system links to each other with the multiple-wavelength laser of optical system, pulse xenon lamp and the spectroscopic detector that detects control system respectively.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156100A (en) * | 2011-04-06 | 2011-08-17 | 浙江大学 | Multispectral-based multipoint sampling multiparameter water quality on-line analytical system |
| CN104597034A (en) * | 2015-02-04 | 2015-05-06 | 厦门大学 | Raman spectra measuring device for multi-wavelength laser frequency shift excitation |
| CN105842170A (en) * | 2016-05-12 | 2016-08-10 | 安徽国能亿盛环保科技有限公司 | Wastewater quality online monitoring system |
| CN107071307A (en) * | 2017-02-20 | 2017-08-18 | 重庆大学 | The real-time data acquisition device and method of a kind of suppression CCD noises |
| CN107144560A (en) * | 2017-04-26 | 2017-09-08 | 深圳市朗诚科技股份有限公司 | On-line chemical analysis instrument |
| CN109387495A (en) * | 2018-10-09 | 2019-02-26 | 东北大学秦皇岛分校 | A kind of double light source photocatalytic reaction devices |
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2011
- 2011-04-06 CN CN2011200977526U patent/CN202002881U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156100A (en) * | 2011-04-06 | 2011-08-17 | 浙江大学 | Multispectral-based multipoint sampling multiparameter water quality on-line analytical system |
| CN104597034A (en) * | 2015-02-04 | 2015-05-06 | 厦门大学 | Raman spectra measuring device for multi-wavelength laser frequency shift excitation |
| CN105842170A (en) * | 2016-05-12 | 2016-08-10 | 安徽国能亿盛环保科技有限公司 | Wastewater quality online monitoring system |
| CN107071307A (en) * | 2017-02-20 | 2017-08-18 | 重庆大学 | The real-time data acquisition device and method of a kind of suppression CCD noises |
| CN107071307B (en) * | 2017-02-20 | 2019-07-16 | 重庆大学 | A kind of real-time data acquisition device and method inhibiting CCD noise |
| CN107144560A (en) * | 2017-04-26 | 2017-09-08 | 深圳市朗诚科技股份有限公司 | On-line chemical analysis instrument |
| CN109387495A (en) * | 2018-10-09 | 2019-02-26 | 东北大学秦皇岛分校 | A kind of double light source photocatalytic reaction devices |
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