CN112304875A - Water quality monitoring system and method based on spectrum method - Google Patents
Water quality monitoring system and method based on spectrum method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000012544 monitoring process Methods 0.000 title claims abstract description 57
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- 238000000034 method Methods 0.000 title claims abstract description 36
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- 230000003595 spectral effect Effects 0.000 claims description 21
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- 238000010183 spectrum analysis Methods 0.000 claims description 8
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- 238000010835 comparative analysis Methods 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
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- 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
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
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- 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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
- G01N21/276—Calibration, base line adjustment, drift correction with alternation of sample and standard in optical path
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
- G01N2021/0314—Double pass, autocollimated path
Abstract
The invention relates to a water quality monitoring system and a method, aiming at solving the technical problems that the prior water quality monitoring method based on a spectrum method has certain difficulty in realizing industrial application, cannot cover various monitoring environments comprehensively and is lack of double-light-path switching during data acquisition of the spectrum method, the system based on the spectrum method comprises a double-path optical switch, the spectrum device, a flicker light source, an upper computer, a first flow cell and a second flow cell, wherein the first flow cell is used for standard liquid to flow through, the second flow cell is used for liquid to be detected to flow through, light emitted by the flicker light source is divided into two paths which respectively pass through the first flow cell and the second flow cell, is guided into the spectrum device after passing through a corresponding one-path switch of the double-path optical switch, and is acquired and analyzed by the spectrum device, the monitoring method is based on the system, and spectrum information of the liquid in the two flow cells is acquired by the double-, and photoelectric conversion measurement and measurement result output are realized.
Description
Technical Field
The invention relates to a water quality monitoring system and a water quality monitoring method, in particular to a water quality monitoring system and a water quality monitoring method based on a spectrum method.
Background
The monitoring range of water quality monitoring is very wide, and the monitoring range comprises natural water (rivers, lakes, seas, underground water and the like) which is not polluted and is polluted, various industrial drainage, domestic water and the like. The main methods for monitoring water quality include chemical analysis, chromatographic analysis, electrochemical analysis, biological sensing and spectroscopic methods. In the water quality parameter measurement application research based on the spectrum method, the measurement accuracy is reduced due to the change of the application environment and the change of the monitoring equipment along with the monitoring time state, and meanwhile, the monitoring equipment is required to be installed in a corresponding pipe network aiming at the application of the water quality monitoring equipment of the spectrum method in industrial drainage and domestic water pipe network monitoring.
The application number is 201621477557.5's chinese patent, discloses a real-time on-line monitoring device of multi-parameter quality of water based on spectrum, adopts the realization mode of dual optical path, utilizes in the spectrum acquisition unit, acquires the absorption spectrum of water sample and the standard water sample of awaiting measuring simultaneously, accomplishes the real-time on-line monitoring of multi-parameter quality of water, nevertheless the spectrum detection unit structure is too complicated, realizes that industrial application has certain difficulty. The Chinese patent application with the application number of 202010482258.5 discloses a water quality ecological parameter detection device and a detection method, wherein the detection device comprises a shell, a light source, a spectrum detection piece and a controller, the spectrum detection piece acquires spectrum data of a water sample to be detected and a reference substance in time division, the controller acquires water quality ecological parameters by analyzing the spectrum data of the water sample to be detected and the reference substance, and the detection device and the detection method are only suitable for open monitoring environments such as rivers, lakes and seas and are not suitable for pipeline and pipe networks. The chinese patent application No. 201910267334.8 discloses a synchronous control circuit and method for a flash light source control circuit, a flash light source and a linear array detector, which is a method for data acquisition, synchronization and optimization of a flash light source and a micro spectrometer, and can be applied to water quality monitoring equipment, but lacks synchronization of dual optical path switching and data latching when data acquisition of a spectrometer is performed.
Disclosure of Invention
The invention provides a water quality monitoring system and method based on a spectrum method, aiming at solving the technical problems that the existing water quality monitoring method based on the spectrum method has certain difficulty in realizing industrial application, cannot comprehensively cover various monitoring environments, and is lack of double-optical-path switching during data acquisition of the spectrum method.
In order to achieve the purpose, the invention provides the following technical scheme:
a water quality monitoring system based on a spectrum method is characterized by comprising a double-path optical switch, a spectrum instrument, a flash light source, an upper computer, a first circulation pool and a second circulation pool;
the first flow-through cell is used for standard liquid to flow through; the second flow cell is used for the liquid to be measured to flow through;
two switches of the two-way optical switch are respectively connected with light paths passing through the first flow cell and the second flow cell;
the light emitted by the scintillation light source is divided into two paths, respectively passes through the first flow cell and the second flow cell, is guided into the spectrometer after passing through a corresponding one path of switch of the two-path optical switch, and is collected and subjected to spectral analysis through the spectrometer;
the double-path optical switch and the flicker light source are both electrically connected with a controller in the spectrometer, and the controller in the spectrometer is used for controlling the double-path optical switch and the flicker light source to work;
the upper computer is electrically connected with the spectrometer and is used for collecting spectral analysis data of the spectrometer, analyzing and storing the spectral analysis data of the standard liquid and the liquid to be detected and interacting with a controller in the spectrometer.
Furthermore, the first circulation tank is in a hollow column shape, and two ends of the first circulation tank are both arranged in a transparent manner and used for enabling light emitted by the scintillation light source to pass through; a first water inlet and a first water outlet are respectively formed in the side walls of the two ends of the first flow-through tank, and Z-shaped channels are formed among the first water inlet, the inner cavity of the first flow-through tank and the first water outlet;
the second circulation tank is in a hollow column shape, and two ends of the second circulation tank are both arranged in a transparent mode and used for enabling light emitted by the scintillation light source to pass through; and the side walls of the two ends of the second circulation pool are respectively provided with a second water inlet and a second water outlet, and Z-shaped channels are formed among the second water inlet, the inner cavity of the second circulation pool and the second water outlet.
Further, the scintillation light source is an electric control scintillation xenon lamp light source, and the output wavelength of the scintillation light source is 200-1100 nm.
Furthermore, the transmission wavelength of the dual-path optical switch is 200-2500 nm.
In addition, the invention also provides a monitoring method adopting the water quality monitoring system based on the spectrum method, which is characterized by comprising the following steps:
s1, enabling the first flow-through cell to flow through standard liquid and the second flow-through cell to flow through liquid to be measured;
s2, sending an instruction to a controller in the spectrometer through the upper computer, and controlling the scintillation light source to send out pulse scintillation light through the controller in the spectrometer;
s3, dividing the pulse scintillation light into two paths, and respectively penetrating through the first flow cell and the second flow cell;
s4, controlling a double-path optical switch to be communicated with one path of light passing through a first flow cell through a controller in the spectrometer, collecting spectral information of the standard liquid through the spectrometer, and sending the spectral information to an upper computer;
s5, a controller in the spectrometer controls a dual-path optical switch to be disconnected with one path of light passing through a first flow cell, controls the dual-path optical switch to be connected with one path of light passing through a second flow cell, collects the spectral information of the liquid to be measured in real time through the spectrometer, and sends the spectral information to an upper computer;
and S6, the upper computer performs real-time comparative analysis on the spectral information of the standard liquid obtained in the step S4 and the real-time spectral information of the liquid to be detected obtained in the step S5, so that real-time monitoring is realized.
Further, in step S2, the upper computer sends an instruction to a controller in the spectrometer via a 485 serial port;
in step S4, the spectrometer collects the spectrum information of the standard liquid, and sends the spectrum information to the upper computer after data latching;
in step S5, the spectrometer collects the spectral information of the liquid to be measured in real time, latches the data, and sends the data to an upper computer.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the water quality on-line monitoring system based on the spectrum method, the first circulation tank and the second circulation tank are respectively used for standard liquid and liquid to be detected to flow through, the spectrum information of the standard liquid or the liquid to be detected is collected by the spectrometer through the double-path optical switch, the optical paths can be switched at any time and are mutually referenced, and the stability and the accuracy of monitoring are improved; the system is simple in arrangement and high in monitoring accuracy, can realize on-line monitoring, and can switch between detection of standard liquid or liquid to be detected at any time and perform standard correction at any time; in addition, the sampling frequency can be set according to the monitoring requirement, and the timing data acquisition is realized; the invention can be applied to various water quality monitoring environments, is convenient to install and set, and is suitable for industrial popularization and application.
2. According to the first circulation tank and the second circulation tank, the arrangement mode of the water inlet and the water outlet enables liquid to flow from the water inlet to the water outlet of the circulation tank along a Z shape, the flow track is long, light emitted by the scintillation light source can smoothly pass through the circulation tank, and the arrangement is more reasonable.
3. The output wavelength of the scintillation light source and the transmission wavelength of the double-path optical switch are matched with each other, so that the invention has wider applicability.
4. According to the method for monitoring the water quality on line based on the spectrum method, based on the monitoring system, the spectrum information of the liquid in the two flow-through cells is collected through two-way switching, so that photoelectric conversion measurement and measurement result output are realized, and the monitoring is more convenient and faster.
5. In the invention, the data latch is matched with the 485 serial port, so that no new acquisition frame data can be latched in the data transmission process, thereby effectively enhancing the acquisition stability and improving the monitoring precision of water quality monitoring.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a spectroscopy-based on-line water quality monitoring system of the present invention;
FIG. 2 is a schematic view of the first flow cell of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of a second flow cell of FIG. 1 according to the present invention.
The device comprises a first flow cell 1, a first water inlet 101, a first water outlet 102, a 2-upper computer, a 3-two-way optical switch, a 4-scintillation light source, a 5-spectrometer, a 6-second flow cell, a second water inlet 601 and a second water outlet 602.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments do not limit the present invention.
As shown in fig. 1 to 3, the invention provides an online water quality monitoring system based on spectroscopy, which comprises a dual-path optical switch 3, a spectrometer 5, a scintillation light source 4, an upper computer 2, a first flow cell 1 and a second flow cell 6. Wherein, first flow-through cell 1 and second flow-through cell 6 are used for standard liquid and the liquid that awaits measuring to flow through respectively, as an optimal selection scheme, all can adopt Z type flow-through cell, all be column hollow structure, both ends adopt transparent glass material about, and inlay SMA905 connects, can design for 200 and give other care of 2500nm through the wavelength range, when the flow-through cell was kept flat, the water inlet of two flow-through cells and delivery port all seted up on the lateral wall of flow-through cell both ends, and water inlet and delivery port are located the first half and the lower half of corresponding flow-through cell respectively, form the circulation passageway of Z style of calligraphy between water inlet, flow-through cell inside and delivery port. For the convenience of the following description of the embodiments of the present invention, the first flow cell 1 is configured for the standard liquid flow, and the second flow cell 6 is configured for the liquid flow to be measured. The dual-path optical switch 3 adopts an electric control dual-path optical switch, two paths of the optical switch are respectively and correspondingly connected with the first flow cell 1 and the second flow cell 6, TTL level control can be adopted, single-path output of the dual optical paths is realized, an SMA905 connector is adopted, and the transmission wavelength range can be correspondingly set to be 200-2500 nm. The scintillation light source 4 preferably adopts a direct-current power supply high-integration xenon lamp triggering control light source, has the characteristics of stable output, long service life, high luminous efficiency and the like, the output wavelength range can be set to 200-plus 1100nm, the spectrometer 5 is an ultraviolet-visible-near-red micro spectrometer based on a C-T light path, and a circuit part on a controller in the spectrometer 5 realizes the linear array detector driving of the spectrometer 5, the control of the two-way optical switch 3 and the triggering control of the scintillation light source 4. The upper computer 2 is electrically connected with the spectrometer 5 and is used for collecting spectral analysis data of the spectrometer 5, analyzing and storing spectral analysis data of standard liquid and liquid to be detected, interacting with a controller in the spectrometer 5, sending corresponding instructions to the controller in the spectrometer 5 and controlling the whole system to work.
The link relation of each part is as follows: the optical fiber that scintillation light source 4 passes through one minute two links with first circulation pond 1 and second circulation pond 6 respectively, and first circulation pond 1 passes through the optical fiber with double-circuit photoswitch 3 and links, and second circulation pond 6 passes through the optical fiber with double-circuit photoswitch 3 and links, and double-circuit photoswitch 3 links through two unification optical fibers with spectrum appearance 5, and spectrum appearance 5 controls double-circuit photoswitch 3 and scintillation light source 4. By utilizing the optical fiber and a special flow cell structure, the water quality monitoring system can be conveniently connected into a pipe network, so that the Z-shaped flow cell is connected in series in the pipe network.
The working process of the water quality monitoring system in the embodiment of the invention is as follows:
the standard liquid and the liquid to be measured flow through the first flow cell 1 and the second flow cell 6 respectively, a control circuit of a controller in the spectrometer 5 controls the scintillation light source 4 to emit pulsed scintillation light, the pulsed scintillation light is split by one-to-two optical fibers, the first flow cell 1 and the second flow cell 6 transmit light transmitted from the flow cells to the two-way optical switch 3 by the optical fibers, the two-way optical switch 3 is also controlled by the control circuit of the spectrometer 5, the light emitted from the two-way optical switch 3 through the flow cells is guided into the spectrometer 5 by one two-in-one optical fiber, spectral information of the standard liquid or spectral information of the liquid to be measured needs to be collected, and the photoelectric conversion measurement and the output of measurement result request are realized only by controlling one-way communication in the two-way optical switch 3 through the spectrometer 5.
The form of dual-optical-path main-standby switching is adopted, the problem of online monitoring is structurally solved, the system error can be effectively reduced, and the stability and the precision of online monitoring of the water quality are improved.
The specific method for monitoring comprises the following steps:
(1) enabling the standard liquid to flow through the first flow cell 1 and the liquid to be detected to flow through the second flow cell 6;
(2) an instruction is sent to a controller in the spectrometer 5 through the upper computer 2, and the controller in the spectrometer 5 controls the scintillation light source 4 to send out pulse scintillation light;
(3) dividing the pulse scintillation light into two paths, and enabling the two paths to penetrate through the first flow cell 1 and the second flow cell 6 respectively;
(4) the controller in the spectrometer 5 controls the two-way optical switch 3 to be in optical communication with one way through the first flow cell 1, and the spectrometer 5 collects spectral information of the standard liquid and sends the spectral information to the upper computer 2;
(5) the controller in the spectrometer 5 controls the two-way optical switch 3 to be in optical communication with one way through the second flow cell 6, and the spectrometer 5 collects the spectral information of the liquid to be measured and sends the spectral information to the upper computer 2;
(6) the upper computer 2 performs real-time comparative analysis on the spectral information of the standard liquid obtained in the step S4 and the spectral information of the liquid to be detected obtained in the step S5, so as to realize monitoring.
The frequency of the instruction sent by the upper computer 2 can be controlled, so that the liquid to be measured can continuously acquire information under a certain frequency. In addition, the standard liquid can be collected once or for multiple times according to requirements.
The transmission driving control process of the system is specifically as follows:
the data request is initiated by the upper computer 2 through a 485 serial port, the data request has randomness, when the data request occurs, a control circuit part in the spectrometer 5 is used as a lower computer, according to the type A/B of the request, A represents a liquid light path to be detected in the second flow cell 6, B represents a standard liquid reference light path in the first flow cell 1, and the A/B light path switching instruction is sent out. Then, the lower computer control program waits for 1 second, the mechanical electronic control optical path switch completes switching within the 1 second, the switching circuit reaches stability, a frame period is waited to end, one frame data acquisition is completed, data is latched according to the type of the request, and the latched data is transmitted to the upper computer 2 according to the type of the data request. The 485 serial port is adopted, the power consumption of the whole control circuit is increased in the data transmission process, the current fluctuation is high, the data latch and the data request transmission process ensure that no new acquisition frame data is latched in the data transmission process, therefore, the stability of the acquisition system is effectively enhanced, and the monitoring precision of the water quality on-line monitoring is improved.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A water quality monitoring system based on spectrum method is characterized in that: the device comprises a double-path optical switch (3), a spectrometer (5), a scintillation light source (4), an upper computer (2), a first flow cell (1) and a second flow cell (6);
the first flow-through tank (1) is used for standard liquid to flow through; the second flow-through cell (6) is used for the liquid to be measured to flow through;
two paths of switches of the two paths of optical switches (3) are respectively connected with light paths passing through the first flow cell (1) and the second flow cell (6);
the light emitted by the scintillation light source (4) is divided into two paths, respectively passes through the first flow cell (1) and the second flow cell (6), passes through a corresponding one-path switch in the two-path optical switch (3), is guided into the spectrometer (5), and is collected and subjected to spectral analysis through the spectrometer (5);
the dual-path optical switch (3) and the flicker light source (4) are electrically connected with a controller in the spectrometer (5), and the controller in the spectrometer (5) is used for controlling the dual-path optical switch (3) and the flicker light source (4) to work;
the upper computer (2) is electrically connected with the spectrometer (5) and is used for collecting spectral analysis data of the spectrometer (5), analyzing and storing spectral analysis data of standard liquid and liquid to be detected and interacting with a controller in the spectrometer (5).
2. A spectroscopy-based water quality monitoring system as defined in claim 1, wherein:
the first flow cell (1) is in a hollow column shape, and two ends of the first flow cell are both arranged in a transparent mode and used for enabling light emitted by the scintillation light source (4) to penetrate through; a first water inlet (101) and a first water outlet (102) are respectively formed in the side walls of the two ends of the first flow-through tank (1), and Z-shaped channels are formed among the first water inlet (101), the inner cavity of the first flow-through tank (1) and the first water outlet (102);
the second circulation tank (6) is in a hollow column shape, and two ends of the second circulation tank are arranged in a transparent mode and used for enabling light emitted by the flicker light source (4) to pass through; and the side walls of two ends of the second circulation tank (6) are respectively provided with a second water inlet (601) and a second water outlet (602), and Z-shaped channels are formed among the second water inlet (601), the inner cavity of the second circulation tank (6) and the second water outlet (602).
3. A spectroscopy-based water quality monitoring system as defined in claim 1, wherein: the scintillation light source (4) is an electric control scintillation xenon lamp light source, and the output wavelength thereof is 200-1100 nm.
4. A spectroscopy-based water quality monitoring system as defined in claim 3, wherein: the transmission wavelength of the two-way optical switch (3) is 200-2500 nm.
5. A monitoring method using the spectroscopy-based water quality monitoring system of any one of claims 1 to 4, comprising the steps of:
s1, enabling the standard liquid to flow through the first flow-through pool (1) and the liquid to be measured to flow through the second flow-through pool (6);
s2, sending an instruction to a controller in the spectrometer (5) through the upper computer (2), and controlling the scintillation light source (4) to send out pulse scintillation light through the controller in the spectrometer (5);
s3, dividing the pulse scintillation light into two paths, and respectively transmitting the two paths of pulse scintillation light through the first flow cell (1) and the second flow cell (6);
s4, controlling the two-way optical switch (3) to be communicated with one way of light passing through the first flow cell (1) through a controller in the spectrometer (5), collecting spectral information of the standard liquid through the spectrometer (5), and sending the spectral information to the upper computer (2);
s5, a controller in the spectrometer (5) is used for controlling the disconnection of the two-way optical switch (3) from one way of light passing through the first flow cell (1), controlling the connection of the two-way optical switch (3) and one way of light passing through the second flow cell (6), and collecting the spectral information of the liquid to be measured in real time through the spectrometer (5) and sending the spectral information to the upper computer (2);
and S6, the upper computer (2) carries out real-time comparative analysis on the spectral information of the standard liquid obtained in the step S4 and the real-time spectral information of the liquid to be detected obtained in the step S5, and real-time monitoring is realized.
6. A method as claimed in claim 5, wherein said method comprises the steps of:
in the step S2, the upper computer (2) sends an instruction to a controller in the spectrometer (5) through a 485 serial port;
in the step S4, the spectrometer (5) collects the spectrum information of the standard liquid, and sends the spectrum information to the upper computer (2) after data latching;
in the step S5, the spectrometer (5) collects the spectrum information of the liquid to be measured in real time, and sends the spectrum information to the upper computer (2) after data latching.
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| WO2023037528A1 (en) * | 2021-09-10 | 2023-03-16 | 富士電機株式会社 | Water quality analysis device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6512582B1 (en) * | 1999-03-31 | 2003-01-28 | Ando Electric Co., Ltd. | Wavelength tracking system using an optical spectrum analyzer and a wavelength tunable light source |
| CN104198388A (en) * | 2014-09-15 | 2014-12-10 | 中国科学院烟台海岸带研究所 | Online water quality monitoring device based on composite spectrum measurement |
| US20150308892A1 (en) * | 2014-12-10 | 2015-10-29 | Sichuan University | Impulsive synchronization spectrometer based on adjustable time window |
| CN206920324U (en) * | 2017-05-26 | 2018-01-23 | 北京汇智精仪科技有限公司 | Water quality monitoring probe based on ultraviolet-visible absorption spectroscopy and fluorescence spectrum |
| CN208125620U (en) * | 2017-12-28 | 2018-11-20 | 杭州电子科技大学 | A kind of water quality on-line monitoring device based on wide spectrum multi-parameter |
| CN110907375A (en) * | 2019-12-09 | 2020-03-24 | 苏州同阳科技发展有限公司 | Full-spectrum water quality online monitoring device and method |
| WO2020147561A1 (en) * | 2019-01-17 | 2020-07-23 | 深圳市太赫兹科技创新研究院有限公司 | Spectrometer and controller thereof |
| CN111562229A (en) * | 2020-04-10 | 2020-08-21 | 中国科学院西安光学精密机械研究所 | Double-light-path absorption spectrum stability measuring system and method for water quality online monitoring |
| CN213986169U (en) * | 2020-11-09 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | Water quality monitoring system based on spectrum method |
-
2020
- 2020-11-09 CN CN202011238632.3A patent/CN112304875A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6512582B1 (en) * | 1999-03-31 | 2003-01-28 | Ando Electric Co., Ltd. | Wavelength tracking system using an optical spectrum analyzer and a wavelength tunable light source |
| CN104198388A (en) * | 2014-09-15 | 2014-12-10 | 中国科学院烟台海岸带研究所 | Online water quality monitoring device based on composite spectrum measurement |
| US20150308892A1 (en) * | 2014-12-10 | 2015-10-29 | Sichuan University | Impulsive synchronization spectrometer based on adjustable time window |
| CN206920324U (en) * | 2017-05-26 | 2018-01-23 | 北京汇智精仪科技有限公司 | Water quality monitoring probe based on ultraviolet-visible absorption spectroscopy and fluorescence spectrum |
| CN208125620U (en) * | 2017-12-28 | 2018-11-20 | 杭州电子科技大学 | A kind of water quality on-line monitoring device based on wide spectrum multi-parameter |
| WO2020147561A1 (en) * | 2019-01-17 | 2020-07-23 | 深圳市太赫兹科技创新研究院有限公司 | Spectrometer and controller thereof |
| CN110907375A (en) * | 2019-12-09 | 2020-03-24 | 苏州同阳科技发展有限公司 | Full-spectrum water quality online monitoring device and method |
| CN111562229A (en) * | 2020-04-10 | 2020-08-21 | 中国科学院西安光学精密机械研究所 | Double-light-path absorption spectrum stability measuring system and method for water quality online monitoring |
| CN213986169U (en) * | 2020-11-09 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | Water quality monitoring system based on spectrum method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023037528A1 (en) * | 2021-09-10 | 2023-03-16 | 富士電機株式会社 | Water quality analysis device |
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