CN207600941U - A kind of wide spectrum Multiparameter water quality monitoring system - Google Patents
A kind of wide spectrum Multiparameter water quality monitoring system Download PDFInfo
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- CN207600941U CN207600941U CN201721463060.2U CN201721463060U CN207600941U CN 207600941 U CN207600941 U CN 207600941U CN 201721463060 U CN201721463060 U CN 201721463060U CN 207600941 U CN207600941 U CN 207600941U
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Abstract
The utility model provides a kind of wide spectrum Multiparameter water quality monitoring system, including system control device, broad spectrum light source, light path detection device, electrical measurement device, data processing and display device；The emergent light of the broad spectrum light source is incident to the electrical measurement device via the water body to be measured in the light path detection device, forms optical system for testing；The emergent light of the broad spectrum light source is incident to the electrical measurement device via the standard water body in the light path detection device, forms reference path；The optical system for testing and the reference path are converted to test electric signal and reference electrical signal by the electrical measurement device；The data processing and display device, the concentration of the parameter to be measured and parameter to be measured in water body to be measured is obtained according to the test electric signal and the reference electrical signal, and is shown；The system control device controls the connection broad spectrum light source, the electrical measurement device and the data processing and display device respectively.
Description
Technical field
The utility model is related to a kind of water quality monitoring systems, specifically, relate to a kind of wide spectrum multi-parameter water quality prison
Examining system.
Background technology
Water is Source of life, not only closely related with industrial and agricultural production safety and human health, the Er Qieshui of quality of water quality
Bad judge of fine quality, prediction are with detection dependent on water quality inspection technique.Traditional water quality detection equipment can to water quality parameter into
Row detection, but general measures single parameter, and poor in timeliness not only bad for the integration of data, also adds detection
Cost.
In recent years, as the uv-visible absorption spectroscopy method of one of the water quality inspection technique of spectrum analysis, it not only gets rid of
Abandoned the water quality inspection techniques such as chemical analysis and electrochemical analysis and chromatography water sample pretreatment it is numerous and diverse, measurement period is long, need
The shortcomings that wanting chemical reagent more also has many advantages, such as that detection speed is fast, at low cost and can realize online, in situ measurement.However,
This measuring technique is monopolized by foreign countries, valuable product.The water analysis model machine of country's research and development then has detection water quality ginseng
The problem of single, light source of number and light path and photoelectric conversion section stability, poor repeatability.
In order to solve the problems, such as present on, people are seeking a kind of ideal technical solution always.
Invention content
The purpose of this utility model is in view of the deficiencies of the prior art, so as to provide a kind of design science, highly practical, inspection
The reliable wide spectrum Multiparameter water quality monitoring system of mass metering.
To achieve these goals, technical solution is used by the utility model：A kind of wide spectrum multi-parameter water quality prison
Examining system, including system control device, broad spectrum light source, light path detection device, electrical measurement device, data processing and display dress
It puts；
The emergent light of the broad spectrum light source is incident to the electricity via the water body to be measured in the light path detection device
Measuring device forms optical system for testing；
The emergent light of the broad spectrum light source is incident to the electricity via the standard water body in the light path detection device
Measuring device forms reference path；
The electrical measurement device, for the optical system for testing and the reference path to be converted to test electric signal and ginseng
Examine electric signal；
The data processing and display device obtain water body to be measured according to the test electric signal and the reference electrical signal
In parameter to be measured and parameter to be measured concentration, and show；
The system control device controls the connection broad spectrum light source, the electrical measurement device and the number respectively
According to processing and display device.
Based on above-mentioned, the light path detection device includes transmitting receiving unit, reaction member and reflector element；
The transmitting receiving unit includes optical splitter and optical receiver；
The reaction member includes the built-in sample pool for having water body to be measured and the interior reference cell equipped with standard water body, the sample
This pond and the both ends of the reference cell are respectively provided with optical transmission window；
The reflector element includes corresponding to described sample pool one end optical transmission window and described reference cell one end light inlet window respectively
The reflection unit of mouth setting；
The emergent light of the broad spectrum light source after the optical splitter via being divided into two-way emergent light；
After emergent light enters sample pool reaction all the way, the sample pool is reflected back by the reflection unit and is reacted, then
It is received by an incidence end of the optical receiver and forms optical path；
After another way emergent light enters reference cell reaction, the reference cell is reflected back by the reflection unit and is reacted,
It is received again by another incidence end of the optical receiver and forms reference path.
Based on above-mentioned, the first collimation that the transmitting receiving unit further includes corresponding two exit end of the optical splitter setting is saturating
The third collimation lens and the 4th collimation of mirror and third collimation lens and corresponding two incidence end of the optical receiver setting are saturating
Mirror.
Based on above-mentioned, the optical splitter is y-type optical fiber；
The optical receiver includes the first incident optical and the second incident optical, light path switching switch and the output optical fiber, institute
Stating light path switching switch controls first incident optical and second incident optical alternately to be connect with the output optical fiber, will
The optical system for testing or the reference path are alternately connected with the electrical measurement device.
Based on above-mentioned, the reflection unit includes optical system for testing reflection unit and reference path reflection unit, the test
Light path reflection unit includes the first total reflection mirror and the second total reflection mirror that are correspondingly arranged, and the reference path reflection unit includes
The third total reflection mirror and the 4th total reflection mirror being correspondingly arranged.
Based on above-mentioned, photodiode detector is both provided in the sample pool and the reference cell.
Based on above-mentioned, the electrical measurement device includes on-site programmable gate array FPGA, photodetector, driving electricity
Road, buffer, A/D conversion circuits and RAM storage chips,
The on-site programmable gate array FPGA is used to generate the clock signal of driving circuit and generation RAM storage chips
Read-write control signal；
The driving circuit drive the photodetector by the optical system for testing under the action of the clock signal and
The reference path is converted to test electric signal and reference electrical signal；
The buffer is used to the test electric signal, the reference electrical signal carrying out impedance matching and signal condition,
To be converted into the application signal of the A/D conversion circuits；
The test electric signal and the reference electrical signal are converted to digital signal and are stored in institute by the A/D conversion circuits
It states in RAM storage chips.
Based on above-mentioned, the broad spectrum light source includes the xenon flash lamp being connect with the system control device.
Based on above-mentioned, further include for position the wide spectrum Multiparameter water quality monitoring system geographical location positioning mould
Block.
Based on above-mentioned, data transmission module is further included, the data transmission module is used for the wide spectrum multi-parameter water
The concentration of parameter to be measured and parameter to be measured in the geographical location of quality supervision examining system, water body to be measured is sent to Cloud Server.
The utility model has substantive distinguishing features and progress compared with the prior art, and specifically, the utility model is using bright
Primary-Beer law directly measures water quality parameter, and detection speed is fast, does not need to chemical reagent, can avoid the secondary dirt to water quality
Dye, while wide spectrum composite light source is used as incident light, by detecting the scattering to interact with substance in water body to be measured
Signal and transmission signal can be realized while measure multiple water quality parameters, realize that comprehensive, real-time, quick and measure water matter is overall
Quality condition and parameters situation of change.
Description of the drawings
Fig. 1 is the functional block diagram of the utility model.
Fig. 2 is the structure diagram of the light path detection device of the utility model.
Fig. 3 is the functional block diagram of the electrical measurement device of the utility model.
Wherein, 1. broad spectrum light source；2.Y type optical fiber；3. the first incident optical；4. the second incident optical；5. the first collimation
Lens；6. the second collimation lens；7. third collimation lens；8. the 4th collimation lens；9. optical transmission window；10. sample cell；11. ginseng
Compare pond；12. the first total reflection mirror；13. the second total reflection mirror；14. third total reflection mirror；15. the 4th total reflection mirror；16. outgoing
Optical fiber；17. light path switching switch；18. photodiode detector.
Specific embodiment
Below by specific embodiment, the technical solution of the utility model is described in further detail.
Contain various pollutants in water body to be measured, and different pollutants for light degree of absorption and scattering degree respectively not
It is identical, referring to Lambert-Beer's law：
Wherein, A is absorbance, I0For incident intensity, I is transmitted intensity, and T is transmissivity, and ε is molar absorptivity system
Number under certain wavelength is a constant to a certain compound, can weigh degree of absorption of the measured matter to light, b is inhales
Light path is received, c is the concentration of extinction material.Since the pollution parameters of various concentration correspond to different scattered signal and transmission signal,
Thus can quantitative analysis be carried out to pollution parameters by the signal strength of scattered signal and transmission signal, pass through the difference of acquisition
Particular kind of relationship setting algorithms of different between signal and water-quality constituents converses the concentration of every pollution parameters in water body to be measured,
It is chemically reacted without relying on.
According to above-mentioned principle, as shown in Figure 1, the utility model provides a kind of wide spectrum Multiparameter water quality monitoring system,
Including system control device, broad spectrum light source 1, light path detection device, electrical measurement device, data processing and display device.
Specifically, the broad spectrum light source 1 includes the xenon flash lamp being connect with the system control device, it is preferred that institute
State the L13651-01 light source modules that xenon flash lamp is HAMAMATSU companies；The broad spectrum light source further includes peripheral circuit, institute
It states peripheral circuit and includes the power supply that DC voltage is 11-28V, DC voltage is the pulse triggering signal and direct current of 4.5-5.5V
Voltage is the reference voltage of 3.2-4.8V.The peripheral circuit is connect with the system control device, is controlled and is filled in the system
The xenon flash lamp is driven to send out emergent light under the control put, the frequency range of the emergent light includes ultraviolet light, visible ray and infrared
Light, the wavelength of the emergent light is 185-2000nm.
The system control device controls the connection broad spectrum light source, the electrical measurement device and the number respectively
According to processing and display device；Specifically, the system control device, light source pulse driving letter is generated using micro-control unit MCU
Number, measuring control signal, data show signal and processing control signal, be respectively used to that the broad spectrum light source 1 is driven to emit
Emergent light, the measurement of the control electrical measurement device and the control data processing and the processing of display device and display,
Preferably, the chip model of the micro-control unit MCU is STM32F103VET6.Due to the feature of different material absorption spectrum
Wavelength is different, and spectrum used is wider, and more wavelength can be had by also meaning that, corresponds to more test substances.
The measurement procedure of the utility model is：The emergent light of the broad spectrum light source 1 passes through in the light path detection device
Water body to be measured be converted to optical system for testing and be incident to the electrical measurement device；The emergent light of the broad spectrum light source passes through described
Standard water body in light path detection device is converted to reference path and is incident to the electrical measurement device；The electrical measurement device
The optical system for testing and the reference path are converted into test electric signal and reference electrical signal；The data processing and display fill
It puts, the dense of parameter to be measured in water body to be measured and parameter to be measured is obtained according to the test electric signal and the reference electrical signal
Degree, and show.
Specifically, using reference electrical signal as compensating approach data, according to the test electric signal and described telecommunications is referred to
Number difference obtain parameter type and concentration in water body to be measured.This is because contain in water body to be measured there are many parameter to be measured, and
The characteristic wavelength of different parameters to be measured is different, and the degree of absorption and scattering degree for light are also different, are reflected in telecommunications
It is number upper be exactly the test electric signal corresponding to different parameters to be measured can be relative to the different degrees of change of reference electrical signal generation
Change, so as to be the type that can determine parameter to be measured according to changed test electric signal；Then according to the test electric signal
Signal strength phase
The concentration of the parameter to be measured is determined for the attenuation degree of the reference electrical signal.
Specifically, as shown in Fig. 2, the light path detection device includes transmitting receiving unit, reaction member and reflector element；
The transmitting receiving unit includes optical splitter and optical receiver；The reaction member includes the built-in sample pool 10 for having water body to be measured
With the interior reference cell 11 equipped with standard water body, the both ends of the sample pool 10 and the reference cell 11 are respectively provided with optical transmission window 9；Institute
Reflector element is stated to include corresponding to 10 one end optical transmission window 9 of sample pool respectively and 11 one end optical transmission window 9 of the reference cell is set
The reflection unit put；
The emergent light of the broad spectrum light source after the optical splitter via being divided into two-way emergent light；Emergent light enters institute all the way
After stating the reaction of sample pool 10, the sample pool 10 is reflected back by the reflection unit and is reacted, then entered by the one of the optical receiver
It penetrates end reception and forms optical path；After another way emergent light enters the reference cell 11 reaction, it is reflected back by the reflection unit
The reference cell 11 reacts, then is received by another incidence end of the optical receiver and form reference path.
Preferably, the transmitting receiving unit further includes the first collimation lens of corresponding two exit end of the optical splitter setting
5 and third collimation lens 7 and corresponding two incidence end of the optical receiver setting the second collimation lens 6 and the 4th collimation it is saturating
Mirror 8.
Specifically, the optical splitter is y-type optical fiber 2；The optical receiver includes the first incident optical 3 and the second incident light
Fibre 4, light path switching switch 17 and the output optical fiber 16, the light path switching switch 17 control first incident optical 3 and described
Second incident optical 4 is alternately connect with the output optical fiber 16, by the optical system for testing or the reference path alternately with it is described
Electrical measurement device is connected.
Specifically, the reflection unit includes optical system for testing reflection unit and reference path reflection unit, the test light
Road reflection unit includes the first total reflection mirror 12 and the second total reflection mirror 13 that are correspondingly arranged, the reference path reflection unit packet
Include 14 and the 4th total reflection mirror 15 of third total reflection mirror being correspondingly arranged.
Further, photodiode detector is both provided in the sample pool 10 and the reference cell 11, it is described
Photodiode detector 18 perpendicular to the optical path or the scattering light of the reference path and is sent to institute for measurement
State electrical measurement device.
Specifically, as shown in figure 3, the electrical measurement device include on-site programmable gate array FPGA, photodetector,
Driving circuit, buffer, A/D conversion circuits and RAM storage chips,
The on-site programmable gate array FPGA is used to generate the clock signal of driving circuit and generation RAM storage chips
Read-write control signal, it is preferred that the fpga chip model is EP2C8Q208C8N；
The driving circuit drive the photodetector by the optical system for testing under the action of the clock signal and
The reference path is converted to test electric signal and reference electrical signal；Preferably, the drive circuit chip is 74HC541；
The photodetector uses the S11639-01 type complementary cmos type detectors of HAMAMATSU companies, the complementation
CMOS type detector only needs to input Clk clock signals, ST start-of-pulsing signals and the relevant power supply of configuration, output
Clk_trig signals can be used for control ADC samplings；
The buffer is used to the test electric signal, the reference electrical signal carrying out impedance matching and signal condition,
To be converted into the application signal of the A/D conversion circuits；
The test electric signal and the reference electrical signal are converted to digital signal and are stored in institute by the A/D conversion circuits
It states in RAM storage chips；
Preferably, the buffer circuits chip model is LT1818；The A/D conversion circuits chip model is
AD9235 is exported using 12 parallel-by-bits, and highest sampling rate is 20MHz, and transformed error is ± 0.4LSB, is supplied using 3V single supplies
Electricity；The model of the RAM chip is IS61LV3216L, access time 10-20ns, memory space 512K, is CMOS type static state
RAM, typical power consumption during work are 130mW, and power consumption when standby then only has 150 μ W.
Specifically, the wide spectrum Multiparameter water quality monitoring system further includes locating module and data transmission module, it is described
Locating module is used to position the geographical location of the wide spectrum Multiparameter water quality monitoring system, and the data transmission module is used for will
The concentration in the geographical location of the wide spectrum Multiparameter water quality monitoring system, the parameter to be measured in water body to be measured and parameter to be measured
Cloud Server is sent to, for user's remote operation.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (10)
1. a kind of wide spectrum Multiparameter water quality monitoring system, it is characterised in that：Including system control device, broad spectrum light source, light
Road detection device, electrical measurement device, data processing and display device；
The emergent light of the broad spectrum light source is incident to the electrical measurement via the water body to be measured in the light path detection device
Device forms optical system for testing；
The emergent light of the broad spectrum light source is incident to the electrical measurement via the standard water body in the light path detection device
Device forms reference path；
The electrical measurement device, for the optical system for testing and the reference path to be converted to test electric signal and with reference to electricity
Signal；
The data processing and display device are obtained according to the test electric signal and the reference electrical signal in water body to be measured
The concentration of parameter to be measured and parameter to be measured, and show；
The system control device is controlled respectively at the connection broad spectrum light source, the electrical measurement device and the data
Reason and display device.
2. wide spectrum Multiparameter water quality monitoring system according to claim 1, it is characterised in that：
The light path detection device includes transmitting receiving unit, reaction member and reflector element；
The transmitting receiving unit includes optical splitter and optical receiver；
The reaction member includes the built-in sample pool for having water body to be measured and the interior reference cell equipped with standard water body, the sample pool
Optical transmission window is respectively provided with the both ends of the reference cell；
The reflector element includes corresponding to described sample pool one end optical transmission window respectively and described reference cell one end optical transmission window is set
The reflection unit put；
The emergent light of the broad spectrum light source after the optical splitter via being divided into two-way emergent light；
After emergent light enters sample pool reaction all the way, the sample pool is reflected back by the reflection unit and is reacted, then by institute
The incidence end for stating optical receiver receives to form optical path；
After another way emergent light enters reference cell reaction, the reference cell is reflected back by the reflection unit and is reacted, then by
Another incidence end of optical receiver receives to form reference path.
3. wide spectrum Multiparameter water quality monitoring system according to claim 2, it is characterised in that：The transmitting receiving unit
It further includes the first collimation lens for corresponding to two exit end of the optical splitter setting and third collimation lens and the corresponding light connects
Receive the third collimation lens and the 4th collimation lens of two incidence end of device setting.
4. the wide spectrum Multiparameter water quality monitoring system according to Claims 2 or 3, it is characterised in that：The optical splitter is Y
Type optical fiber；
The optical receiver includes the first incident optical and the second incident optical, light path switching switch and the output optical fiber, the light
Road switching switch controls first incident optical and second incident optical alternately to be connect with the output optical fiber, by described in
Optical system for testing or the reference path are alternately connected with the electrical measurement device.
5. wide spectrum Multiparameter water quality monitoring system according to claim 2, it is characterised in that：The reflection unit includes
Optical system for testing reflection unit and reference path reflection unit, what the optical system for testing reflection unit included being correspondingly arranged first is all-trans
Mirror and the second total reflection mirror are penetrated, the reference path reflection unit is all-trans including the third total reflection mirror being correspondingly arranged and the 4th
Penetrate mirror.
6. according to the wide spectrum Multiparameter water quality monitoring system described in claim 2,3 or 5, it is characterised in that：The sample pool
Photodiode detector is both provided with in the reference cell.
7. wide spectrum Multiparameter water quality monitoring system according to claim 1, it is characterised in that：The electrical measurement device
Including on-site programmable gate array FPGA, photodetector, driving circuit, buffer, A/D conversion circuits and RAM storage chips,
The on-site programmable gate array FPGA is used to generate the clock signal of driving circuit and generates the reading of RAM storage chips
Write control signal；
The driving circuit drives the photodetector by the optical system for testing and described under the action of the clock signal
Reference path is converted to test electric signal and reference electrical signal；
The buffer is used to the test electric signal, the reference electrical signal carrying out impedance matching and signal condition, to turn
Change the application signal of the A/D conversion circuits into；
The A/D conversion circuits by the test electric signal and the reference electrical signal be converted to digital signal be stored in it is described
In RAM storage chips.
8. wide spectrum Multiparameter water quality monitoring system according to claim 1, it is characterised in that：The broad spectrum light source packet
Include the xenon flash lamp being connect with the system control device.
9. wide spectrum Multiparameter water quality monitoring system according to claim 1, it is characterised in that：It further includes for positioning
State the locating module in the geographical location of wide spectrum Multiparameter water quality monitoring system.
10. wide spectrum Multiparameter water quality monitoring system according to claim 9, it is characterised in that：Further include data transmission
Module, the data transmission module is used for will be in the geographical location of the wide spectrum Multiparameter water quality monitoring system, water body to be measured
Parameter to be measured and the concentration of parameter to be measured be sent to Cloud Server.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643260A (en) * | 2017-11-06 | 2018-01-30 | 汉威科技集团股份有限公司 | A kind of wide spectrum Multiparameter water quality monitoring system |
| CN109115697A (en) * | 2018-09-30 | 2019-01-01 | 杭州电子科技大学 | A kind of multi-parameter water-quality on-Line Monitor Device of aggregate optical probe |
| CN110887801A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
-
2017
- 2017-11-06 CN CN201721463060.2U patent/CN207600941U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643260A (en) * | 2017-11-06 | 2018-01-30 | 汉威科技集团股份有限公司 | A kind of wide spectrum Multiparameter water quality monitoring system |
| CN107643260B (en) * | 2017-11-06 | 2024-05-03 | 汉威科技集团股份有限公司 | Wide-spectrum multi-parameter water quality monitoring system |
| CN109115697A (en) * | 2018-09-30 | 2019-01-01 | 杭州电子科技大学 | A kind of multi-parameter water-quality on-Line Monitor Device of aggregate optical probe |
| CN110887801A (en) * | 2019-11-27 | 2020-03-17 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
| CN110887801B (en) * | 2019-11-27 | 2021-02-19 | 中国科学院西安光学精密机械研究所 | Device and method for carrying out long-time in-situ detection on complex water body based on spectrum method |
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