CN110736723A - method and system for online simultaneous detection of low turbidity and high turbidity - Google Patents
method and system for online simultaneous detection of low turbidity and high turbidity Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 107
- 238000012360 testing method Methods 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000002835 absorbance Methods 0.000 claims description 12
- 230000009191 jumping Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 30
- 238000005259 measurement Methods 0.000 description 12
- 238000004364 calculation method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004879 turbidimetry Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
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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
- G01N21/59—Transmissivity
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention discloses an method and a system for online simultaneous detection of low turbidity and high turbidity, which comprises a detection cell unit, an optical system unit and a software calculation processing data unit, wherein the optical unit comprises two test channels, test channels are used for performing scattering test, test channels are used for performing transmission test, the two test channels comprise light-emitting elements and two photosensitive elements, the light-emitting elements and the scattering photosensitive elements in the optical system unit are arranged on a circuit board at non-linear angles, the transmission photosensitive elements are arranged at positions opposite to the straight lines of the light-emitting elements and are respectively used for performing scattering test and transmission test, when the optical unit tests a water sample, the optical unit simultaneously performs scattering test and transmission test on the water sample, and sets scattering signal threshold values, light intensity threshold values, multi-stage scattering current, multi-stage transmission current, scattering and transmission current switching to test the turbidity of the water sample.
Description
Technical Field
The invention relates to the field of detection, in particular to methods and systems for online simultaneous detection of low turbidity and high turbidity.
Background
The turbidity is not only the most important physical appearance index for representing water quality, but also means the content of various toxic and harmful substances in water, so that the accurate measurement of the turbidity in water is important.
Water is taken as a life source and directly relates to human health condition and industrial production quality, but water quality monitoring is not easy, water quality indexes are very many in the actual monitoring process, turbidity is which is an important index for measuring water quality condition, a water factory draws water from a place with less pollution in a long distance, although water quality is improved, water production cost is increased, water in water source places has large turbidity difference along with different seasons (tidal rivers) and gas phases, in order to enable the introduced water source water to meet national requirements, water inlet quality must be strictly detected, a tap water company directly discharges untreated large amount of filter tank backwashing wastewater and sedimentation tank sludge water into rivers, channel siltation is caused, negative influence of degree on water environment is caused, sewage must be treated and then discharged, and in both cases, a large amount of manpower and material resources are required to be invested to strictly detect water quality turbidity.
The turbidity measurement methods used in general include spectrophotometry, visual turbidimetry, and turbidimetry. The turbidity of the water sample is controlled by a visual method, and the error is large. At present, the measurement of turbidity is based on an optical method, and the measurement is complex, and the turbidity is not only related to suspended matters, but also related to the components of impurities in water, the particle size and the chromaticity of the water. The principle of the transmission light type turbidimeter is simple, the design of the instrument is also simple, a larger turbidity range can be obtained by adopting transmission type measurement, but the accuracy is easily influenced by the color of a water sample body, and the transmission light type turbidimeter is suitable for measuring a high-turbidity water sample; the scattering turbidity meter is suitable for water samples with lower turbidity, and the scattering light intensity is in direct proportion to the turbidity of the water samples. Therefore, the prior turbidity measurement has the phenomena of poor signal stability, low effectiveness and accuracy, small measuring range, large error and low stability, so that the measurement becomes very difficult, and the practical application can not meet the engineering requirement.
Disclosure of Invention
1. Objects of the invention
The invention provides online methods and systems for simultaneously monitoring low turbidity and high turbidity, which integrate the advantages of scattering and transmission, utilize hardware structure design and characteristics in combination with software method, can realize full-range measurement of 1-10000NTU only by infrared lamps, have simple structure, are connected with a client controller and output by 4-20MA current signals, are simple to use, have high sensitivity and accuracy, and automatically switch test channels according to actual water samples.
2. The technical scheme adopted by the invention
The invention discloses an system for online simultaneous detection of low turbidity and high turbidity, which comprises a detection pool unit, an optical system unit and a software calculation processing data unit, wherein the optical unit comprises two test channels, test channels are used for performing scattering test, test channels are used for performing transmission test, the two test channels comprise light-emitting elements and two photosensitive elements, the light-emitting elements and the scattering photosensitive elements are arranged on a circuit board at non-linear angles, the transmission photosensitive elements are arranged at positions opposite to the linear positions of the light-emitting elements and are used for performing scattering and transmission tests respectively, when the optical unit tests a water sample, the optical unit simultaneously performs scattering test and transmission test on the water sample, and a scattering signal threshold value m is set1And a light intensity threshold q, reading scattering and transmission signals tested by the optical unit by a software system, and testing the turbidity of the water sample by respectively switching scattering current and transmission current.
Further , the optical unit housing is a hollow cylinder, the optical system structure is installed inside, the light emitting element and the transmission photosensitive element are on the same diagonal line , and the scattering photosensitive element corresponds to the light emitting element and the transmission photosensitive element at a non-linear angle.
Further , the scattering current is two-step, and the transmission current is two-step.
The invention discloses online methods for simultaneously detecting low turbidity and high turbidity, which are used for testing according to the following steps:
setting a scatter signal threshold m1Transmitted light intensityq，Ki,biFor linear fit coefficients, the specific test steps are as follows:
step 4, starting a transmission current self-regulation function to regulate the transmission light intensity of the water sample, and substituting the new transmission current four into Y if the transmission light intensity is greater than q to obtain a new transmission current four4＝K4X4+b4Calculating transmitted light intensity T 'of DI under transmission current four'di signalX4Value of transmission current four, Y4Is T'di signal，T'Solution signalIs when
The transmission signal parameter measured under the four conditions of the front transmission current, the driving current of the light-emitting element and the luminous intensity are in direct proportion; can pass through-log (T'Solution signal/T'di signal) Obtaining the absorbance of the water sample under the transmission current of four, substituting into the relational expression Y2＝K2X2+b2Calculating turbidity; if the transmitted light intensity is less than q, the over-range alarm is given.
3. Advantageous effects adopted by the present invention
(1) Based on the technology of a scattering method and a transmission method, the invention carries out two-channel multi-current scattering transmission measurement through an unique light source, judges and selects a proper measurement channel and a proper test method, finds out the relation between an optical element and scattering and transmission signals by utilizing the characteristics of an optical structure and hardware, develops methods and systems capable of simultaneously detecting low turbidity and high turbidity, realizes the automatic switching measurement of the turbidity concentration range from 1NTU to 10000NTU on the device, has stable performance and high sensitivity, adopts multi-current scattering signal calculation at the low end, adopts multi-current transmission signal calculation at the high end, and can control the accuracy within +/-5 percent.
(2) The invention selects the large range through transmission and selects the precision through scattering, so the invention adopts multi-stage transmission current and scattering current to realize the testing precision.
Drawings
FIG. 1 is a cross-sectional view of the optical unit of the device;
FIG. 2 is a cross-sectional view of the optical unit of the device;
in fig. 3, y is 0.997x +0.68, R2A linear relation graph of a true value and an actual value which are 0.999;
in fig. 4, y is 0.985x-1.543, R2A linear relation graph of a true value and an actual value of 0.998;
in fig. 5, y is 1.044x-37.44, R2A linear relation graph of a true value and an actual value of 0.998;
in fig. 6, y is 0.965x +270.3, R2Linear relationship between true value and measured value of 0.999.
Detailed Description
The technical solutions in the examples of the present invention will be described clearly and completely with reference to the drawings in the examples of the present invention, and it is obvious that the described embodiments are only partial embodiments of of the present invention, rather than the whole embodiments.
An example of the invention is further described in detail below with reference to the drawings.
Example 1
The device is devices which are developed based on scattering and transmission principles and are used for detecting low turbidity and high turbidity on line simultaneously, and data processing calculation and switching are carried out by using software.
The device comprises a detection cell unit, an optical system unit and a software calculation processing data unit, wherein the optical unit comprises two test channels, test channels are used for performing scattering tests, test channels are used for performing transmission tests, the two test channels comprise light-emitting elements and two photosensitive elements, and the measurement method really realizes multiple functions of optical elements at the same time.
The optical system unit light-emitting element 1 and the scattering photosensitive element 2 are arranged at a non-linear angle, and the transmission photosensitive element 3 is arranged at a position opposite to the straight line of the light-emitting element 1 and is used for performing scattering and transmission tests respectively; when the optical unit tests a water sample, the optical unit can simultaneously perform scattering test and transmission test on the water sample;
the absorbance is a function of the logarithmic value of the ratio of the intensity of the incident light to the intensity of the transmitted light. The change of light intensity directly influences the output voltage of photoelectric detection, so in the design, the absorbance value can be obtained by measuring the voltage value before and after the turbidity change of the sample; the intensity of scattered light is related to turbidity due to scattering of light by suspended particles in the liquid; turbidity information can be obtained by measuring the scattered light intensity. The measurement range of transmission is large, the measurement range of scattering is small, the large-range selection is carried out through transmission, and the precision selection is carried out through scattering, so that the test precision of the invention is realized by adopting multistage transmission current and scattering current.
Fig. 1 is a cross-sectional view of the optical unit of the device, which is a hollow cylinder, and the inner cavity is a view of the installation positions of the light-emitting element and the photosensitive element. The No. 1 position of the light-emitting element is a 950nm infrared lamp to ensure that the interference caused by the color of the sample is minimized, the No. 2 position is a scattering photosensitive element, the scattering photosensitive element and the scattering photosensitive element are arranged on a circuit board at an angle of 90 degrees, and the transmission photosensitive element 3 and the light-emitting element 1 are arranged on the circuit board in a straight line.
Fig. 2 is a cross-sectional view of the optical unit of the device, which is a hollow cylinder, and the inner cavity is a view of the installation positions of the light-emitting element and the photosensitive element. The No. 1 position of the light-emitting element is a 950nm infrared lamp, the No. 2 position is a scattering photosensitive element, the light-emitting element and the scattering photosensitive element are arranged on the circuit board in a non-linear mode, and the transmission photosensitive element 3 and the light-emitting element 1 are arranged on the circuit board in a linear mode.
Setting a scatter signal threshold m1Transmitted light intensityqThe specific test steps are as follows:
before formal application of the method to actual water body testing, fixed-range color exists in the water body, but turbidity still exists, because the actual water body absorbs light intensity, the scattering signal measured under the current is more realThe scattering signal is small, the detected scattering signal needs to be compensated through absorbance, and a compensation step F1 and a preset scattering signal threshold value m are further arranged2，m2＜m1The software system reads the scattering and transmission signals tested by the optical unit, and respectively adopts the scattering current and the transmission current three, if the absorbance of the transmission current three is calculated to be larger than n1And the scattering signal under the scattering current is less than m2Absorbance X calculated by transmission current1Carry into relation Y1＝K1X1+b1Calculating turbidity, X1From S under a scattered current "Solution signal/Sdi signalTo give Sdi signalBuilt-in scattered signals for leaving the factory, S "Solution signalThe scattering signal S measured under the condition of scattering current is the scattering signal S obtained by subjecting current to absorbance compensationSolution signal，(S”Solution signal＝SSolution signal/(TSolution signal/Tdi signal))，Y1Is turbidity concentration; otherwise, jumping to the step 1;
step 4, starting a transmission current self-regulation function to regulate the transmission light intensity of the water sample, and substituting the new transmission current four into Y if the transmission light intensity is greater than q to obtain a new transmission current four4＝K4X4+b4Calculating transmitted light intensity T 'of DI under transmission current four'di signal，X4Value of transmission current four, Y4Is T'di signal，T'Solution signalThe transmission signal parameter is measured under the condition of the current transmission current four, and the driving current of the light-emitting element is in direct proportion to the luminous intensity; can pass through-log (T'Solution signal/T'di signal) Obtaining the absorbance of the water sample under the transmission current of four, substituting into the relational expression Y2＝K2X2+b2Calculating turbidity; if the transmitted light intensity is less than q, the over-range alarm is given.
Wherein the threshold value m of the scattering signal13500, the transmitted light intensity q is 500, Ki,biThe error is allowed to be + -5% or + -1 ntu for linear fitting coefficients.
The device outputs 4-20MA current through the connection with the customer's controller.
The software system of the device has powerful data processing and calculating functions, and the device has the advantages of stable light source in hardware, simple structure, stable performance and high sensitivity.
Weighing 0.9 g of kaolin, adding 1 g of 50% PAA as a dispersing agent, fixing the volume within 100ml, calibrating an instrument of a certain brand by using an externally purchased turbidity standard solution, diluting the solution for multiple times to within 400NTU, reversely deducing the concentration of the turbidity solution in a volumetric flask, using water as a solvent, configuring a series of turbidity solutions with different concentrations for testing, simulating field testing through a circulating system, using a table as test data, and having the detection limit of 0.16 NTU:
when the turbidity solution is 1 to 100NTU, the channel is internally provided with a linear relation R2-0.9996 between the scattering signal and the turbidity concentration under the scattering current
When the turbidity solution is 100-
When the turbidity solution is 1000-
When the turbidity solution is 6000-10000NTU, the linear relation between the transmission signal and the turbidity concentration under the new transmission current 4 of the two channels is R2-0.9991
The burn-in apparatus was tested as in FIGS. 3-6 and the results are shown in Table .
TABLE
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1, kinds of on-line simultaneous detection of low turbidity and high turbidityThe system is characterized by comprising a detection cell unit, an optical system unit and a software calculation processing data unit, wherein the optical unit comprises two test channels, test channels are used for performing scattering tests, test channels are used for performing transmission tests, the two test channels comprise light-emitting elements and two photosensitive elements, the light-emitting elements and the scattering photosensitive elements in the optical system unit are arranged on a circuit board at non-linear angles, the transmission photosensitive elements are arranged at positions opposite to the light-emitting elements in a linear mode and are used for performing scattering and transmission tests respectively, when the optical unit tests a water sample, the optical unit performs scattering tests and transmission tests on the water sample simultaneously, and a scattering signal threshold value m is set1And when the light intensity q is transmitted, the software system reads scattering and transmission signals tested by the optical unit, and the turbidity of the water sample is tested by respectively switching the scattering current and the transmission current.
2. The system of claim 1, wherein the optical unit housing is a hollow cylinder, the optical system structure is mounted inside, the light emitting element and the transmissive photosensitive element are located on the same line , and the scattering photosensitive element corresponds to the light emitting element and the transmissive photosensitive element at a non-linear angle.
3. The system for online simultaneous detection of low turbidity and high turbidity of claim 1, wherein: the scattering current is in two stages, and the transmission current is also in two stages.
4, method for online simultaneous detection of low turbidity and high turbidity, characterized in that the test is carried out using the system of any as claimed in claims 1, 2, 3:
setting a scatter signal threshold m1Transmitted light intensityq，Ki,biFor linear fit coefficients, the specific test steps are as follows:
step 1, testing a scattering signal of a water sample by using scattering current , and if the scattering signal is less than m1Substituting Y with the scattering current 1＝K1X1+b1Computing，X1From S under the scattered current Solution signal/Sdi signalTo give Sdi signalFor built-in scattered signals leaving the factory, SSolution signalThe scattering signal, Y, measured under the condition of scattering current 1If the concentration is turbidity concentration, otherwise, skipping to the step 2;
step 2, starting a scattering current self-regulation function to adjust the scattering signal of the water sample, wherein the scattering signal is less than or equal to m1Then new second scattering current is obtained and substituted into Y3＝K3X3+b3Calculating the scattering signal of DI under the second scattering current, wherein the driving current and the luminous intensity of the luminous element are in direct proportion, and X3For self-regulated scattered current two, Y3DI scatters Signal S 'under a scattercurrent of two'di signal(ii) a Simultaneously bring into relation Y1＝K1X1+b1Calculating the turbidity, wherein X1Is a scattering current of Ding S'Solution signal/S'di signal，S'di signalIs Y3＝K3X3+b3Calculated scatter Signal, S'Solution signalScattering signals measured under the condition of scattering current II; otherwise, jumping to the step 3;
step 3, adopting the transmission current to measure the transmission signal, if the transmission signal is larger than the transmission signalqDuring the process, the transmitted light intensity of the water sample is tested by using the transmission current III, and the absorbance X calculated by using the transmission current III2Carry into relation Y2＝K2X2+b2Calculating turbidity, X2From transmission current at three-log (T)Solution signal/Tdi signal) Result in, Tdi signalThe signal is a transmission signal parameter which is built in the factorySolution signalIs a transmission signal parameter, Y, measured under the three conditions of the current transmission current2Is turbidity concentration; otherwise, jumping to the step 4;
step 4, starting a transmission current self-regulation function to regulate the transmission light intensity of the water sample, and substituting the new transmission current four into Y if the transmission light intensity is greater than q to obtain a new transmission current four4＝K4X4+b4Calculate the perspectiveTransmitted light intensity T 'of DI under emission current four'di signal，X4Value of transmission current four, Y4Is T'di signal，T'Solution signalThe transmission signal parameter is measured under the current transmission current four condition, and the driving current of the light-emitting element is in direct proportion to the luminous intensity; can pass through-log (T'Solution signal/T'di signal) Obtaining the absorbance of the water sample under the transmission current of four, substituting into the relational expression Y2＝K2X2+b2Calculating turbidity; if the transmitted light intensity is less than q, the over-range alarm is given.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268876A (en) * | 2020-10-14 | 2021-01-26 | 天津优可信科技有限公司 | Water quality detection unit and water quality detector |
| CN113720803A (en) * | 2021-07-15 | 2021-11-30 | 常州罗盘星检测科技有限公司 | Method and system for online simultaneous detection of low-concentration and high-concentration floating water at low temperature and high temperature |
| CN115266708A (en) * | 2022-07-25 | 2022-11-01 | 交通运输部天津水运工程科学研究所 | Embedded sand content measuring system based on recurrent neural network and control method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343552A (en) * | 1979-12-28 | 1982-08-10 | Purecycle Corporation | Nephelometer |
| CN101266210A (en) * | 2007-08-08 | 2008-09-17 | 北京师范大学 | Pulsed laser real time measurement method for sea water opacity |
| CN102042973A (en) * | 2010-10-18 | 2011-05-04 | 孙玥 | Real-time on-line monitoring system for water turbid degree |
| CN102128814A (en) * | 2010-12-09 | 2011-07-20 | 中国科学院安徽光学精密机械研究所 | Light path structure and method for detecting large-dynamic range liquid turbidity |
| CN102235975A (en) * | 2010-05-06 | 2011-11-09 | 中天建设集团有限公司 | Liquid turbidity detection device |
| CN102445437A (en) * | 2010-09-30 | 2012-05-09 | 中国科学院电子学研究所 | Method and device for measuring turbidity |
| CN103499539A (en) * | 2013-09-25 | 2014-01-08 | 中国农业大学 | Aquaculture turbidity detector and aquaculture turbidity detection method based on optical theory |
| CN104089877A (en) * | 2014-07-10 | 2014-10-08 | 上海第二工业大学 | Wide-range turbidity meter |
| US20150241343A1 (en) * | 2014-02-25 | 2015-08-27 | Sinsche Technology (Hongkong) Co., Limited | Apparatus for measuring turbidity and method for rapidly measuring turbidity |
| US20160139046A1 (en) * | 2014-11-10 | 2016-05-19 | In-Situ, Inc. | Compact sensor for measuring turbidity or fluorescence in a fluid sample |
| CN105637342A (en) * | 2013-09-30 | 2016-06-01 | 哈克兰格有限责任公司 | Nephelometric turbidimeter and method for detection of the contamination of a sample cuvette of a nephelometric turbidimeter |
| CN106053391A (en) * | 2016-07-22 | 2016-10-26 | 深圳市绿恩环保技术有限公司 | Turbidity measuring method, turbidity measuring device and turbidimeter |
| US20160370287A1 (en) * | 2015-06-17 | 2016-12-22 | Flodesign Sonics, Inc. | Turbidity sensor with improved flow path |
| CN106404681A (en) * | 2016-11-10 | 2017-02-15 | 李秀超 | Water quality detection method and system |
-
2019
- 2019-10-18 CN CN201910994139.5A patent/CN110736723B/en not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343552A (en) * | 1979-12-28 | 1982-08-10 | Purecycle Corporation | Nephelometer |
| CN101266210A (en) * | 2007-08-08 | 2008-09-17 | 北京师范大学 | Pulsed laser real time measurement method for sea water opacity |
| CN102235975A (en) * | 2010-05-06 | 2011-11-09 | 中天建设集团有限公司 | Liquid turbidity detection device |
| CN102445437A (en) * | 2010-09-30 | 2012-05-09 | 中国科学院电子学研究所 | Method and device for measuring turbidity |
| CN102042973A (en) * | 2010-10-18 | 2011-05-04 | 孙玥 | Real-time on-line monitoring system for water turbid degree |
| CN102128814A (en) * | 2010-12-09 | 2011-07-20 | 中国科学院安徽光学精密机械研究所 | Light path structure and method for detecting large-dynamic range liquid turbidity |
| CN103499539A (en) * | 2013-09-25 | 2014-01-08 | 中国农业大学 | Aquaculture turbidity detector and aquaculture turbidity detection method based on optical theory |
| CN105637342A (en) * | 2013-09-30 | 2016-06-01 | 哈克兰格有限责任公司 | Nephelometric turbidimeter and method for detection of the contamination of a sample cuvette of a nephelometric turbidimeter |
| US20150241343A1 (en) * | 2014-02-25 | 2015-08-27 | Sinsche Technology (Hongkong) Co., Limited | Apparatus for measuring turbidity and method for rapidly measuring turbidity |
| CN104089877A (en) * | 2014-07-10 | 2014-10-08 | 上海第二工业大学 | Wide-range turbidity meter |
| US20160139046A1 (en) * | 2014-11-10 | 2016-05-19 | In-Situ, Inc. | Compact sensor for measuring turbidity or fluorescence in a fluid sample |
| US20160370287A1 (en) * | 2015-06-17 | 2016-12-22 | Flodesign Sonics, Inc. | Turbidity sensor with improved flow path |
| CN106053391A (en) * | 2016-07-22 | 2016-10-26 | 深圳市绿恩环保技术有限公司 | Turbidity measuring method, turbidity measuring device and turbidimeter |
| CN106404681A (en) * | 2016-11-10 | 2017-02-15 | 李秀超 | Water quality detection method and system |
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