CN109270014A - Water quality automonitor and monitoring method under a kind of multifunctional water - Google Patents
Water quality automonitor and monitoring method under a kind of multifunctional water Download PDFInfo
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- CN109270014A CN109270014A CN201811137986.1A CN201811137986A CN109270014A CN 109270014 A CN109270014 A CN 109270014A CN 201811137986 A CN201811137986 A CN 201811137986A CN 109270014 A CN109270014 A CN 109270014A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims description 51
- 238000012360 testing method Methods 0.000 claims description 24
- 238000004448 titration Methods 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052710 silicon Inorganic materials 0.000 claims description 16
- 239000010703 silicon Substances 0.000 claims description 16
- 238000002798 spectrophotometry method Methods 0.000 claims description 15
- 230000003321 amplification Effects 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 4
- 210000000476 body water Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000012286 potassium permanganate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005443 coulometric titration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1806—Water biological or chemical oxygen demand (BOD or COD)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses water quality automonitor and monitoring method under a kind of multifunctional water, monitor includes scalable fixed bracket, box body, slave computer, sliding block and power module, and scalable fixed pedestal lower end is fixed in water；Box body sealing, top is provided with a hole；Slave computer is built in box body, for controlling sliding block and acquisition water quality parameter data, and data is uploaded to host computer；Sliding block is for connecting box body and scalable fixed bracket；Power module is built in box body, is powered for monitor.When monitoring, current water sample is titrated with different reagents, and control ultraviolet source and issue different light to monitor different water quality parameters；Slave computer controls sliding block simultaneously, moves up and down box body in vertical direction, and then acquires multiple water quality parameters of different water depth.The present invention can measure COD, nitrogen content and the pH value at different water depth, realizes automation equipment, avoids secondary pollution, save the cost, improves water quality monitoring accuracy and comprehensive.
Description
Technical field
The present invention relates to water monitoring device and method, more particularly, to water quality automonitor under a kind of multifunctional water and
Monitoring method.
Background technique
With the development of industry, water pollution is increasingly severe, and COD (COD) and nitrogen content, pH value can be anti-
The degree polluted in water by reducing substances is reflected, is the major criterion for measuring environmental quality, currently, the measurement conventional method of water quality
Generally use chemical method, mainly use potassium dichromate standard method, coulometric titration, according to water quality chlorine ion concentration it is different its
Monitoring method is also different, and fresh water generally uses potassium dichromate method, acidic potassium permanganate method, and seawater uses basic potassium permanganate method.
But these conventional methods all have that reagent dosage is big, and secondary pollution is serious, the testing time is long, operating procedure is many and diverse, measurement object
Disadvantage single, the degree of automation is low has been not suitable with the market demand of modernization.
The spectrophotometry de termination of water quality measurement is carried out in the Fundamentals of Measurement of titration, and absorption spectrum original is used
Reason, according to after the completion of being titrated in solution in reagent ion concentration how much, the ultraviolet source measurement that different wave length is respectively adopted is different
The absorbance of the water quality of concentration solution to be measured, therefore according to gained absorbance working curve, can represent chemistry in water sample needs
Oxygen amount, nitrogen content, pH value.Spectrophotometry de termination is a kind of improvement of titration, saves reagent, easy to operate.But it is existing
Instrument can only measure a kind of parameter of water quality mostly, and cannot complete the unified measurement of multi-parameter, this also results in water quality measurement
As a result one-sidedness and inaccuracy, therefore how to study a kind of water quality monitoring instrument of novel support multi parameter simultaneous measuring
It is extremely urgent.
The existing water quality monitor based on spectrophotometry in market generally requires the dedicated examination of mating corresponding production company
Agent, and artificial titer reagent is had to, manual sampling is needed, manual operation completes each water quality monitoring step, therefore wastes
A large amount of manpower, material resources and financial resources, and the water sample obtained is single, cannot embody the water quality situation under the water environment of different depth,
Monitoring result is undesirable, and compatibility of the water quality monitoring instrument under different measurement environment is very poor, for water environment
Actual measurement is unilateral, and measuring speed and precision are to be improved, and instrument price is expensive, bulky operating procedure complexity is not easy to
Practical application.Therefore how to realize collect multi-functional, cheap, data dynamic access and processed offline, in-site measurement at a distance
Monitoring, manual measurement and automatic measurement, different water depth water quality measurement, measurement are simple accurately and fast portable in being integrally water quality
One of the pressing issues that monitoring instrument is faced.
Summary of the invention
Goal of the invention: a purpose is to provide water quality automonitor and monitoring method under a kind of multifunctional water, to solve
The prior art extends water quality monitor function with using the existing above problem, improves water quality monitor under different water depth
The automatic measurement function and field measurement function of multiple parameters.
Technical solution: for achieving the above object, the invention adopts the following technical scheme:
Water quality automonitor under a kind of multifunctional water, including scalable fixed bracket, box body, slave computer, sliding block
And power module, in which:
Scalable fixed pedestal lower end is fixed in water, for fixing entire monitor；
Box body sealing, top are provided with a hole, and box portion outside is equipped with a measurement switch；
Slave computer is built in box body, for controlling sliding block and acquisition water quality parameter data, and by the water quality of acquisition
Supplemental characteristic is uploaded to host computer；
Sliding block is for connecting box body and scalable fixed bracket；
Power module is built in box body, is each module for power supply of monitor；
Slave computer controls sliding block, moves up and down box body in vertical direction, and then acquires the multiple of different water depth
Water quality parameter.
Optionally, scalable fixed bracket includes upper and lower two sections stainless steel iron pipe, and upper section is telescopic joint, and lower section is to fix
Section, telescopic joint lower end have a night bolt, multiple fixation holes with night bolt cooperation are distributed on fixed knot, when bullet
When spring bolt is inserted into different fixation holes, entire scalable fixed bracket has different height, and telescopic joint and fixed knot pass through
Night bolt is fixedly connected with fixation hole.
Optionally, inboard wall of cartridge is equipped with waterproof layer, and slave computer and power module are located inside waterproof layer.
Optionally, slave computer includes single-chip microcontroller, multichannel spectrophotometry water quality module and data access module, multi-pass
Road spectrophotometry water quality module measurement water quality information is converted to electric signal, then exports to single-chip microcontroller and is handled, monolithic
Data are exported to data access module after machine processing, read data from data access module by host computer.
Optionally, single-chip microcontroller includes control unit, outside RTC, external crystal-controlled oscillation, signal condition amplifying circuit and multichannel
ADC conversion module, multichannel spectrophotometry water quality module include that firm banking, binary channels spectrophotometric device, test tube are fixed
Device, silicon photocell sensor 1, silicon photocell sensor 2, ultraviolet source 1, ultraviolet source 2, titration slot and water valve, binary channels
Spectrophotometric device is fixed on the fixed base, is equipped with optical path on-off switch in test tube fixing device inner wall, to be tested for holding
The test tube of agent is placed in test tube fixing device, and test tube opening face box body top drilling, and water valve is set to the fixed dress of test tube
Upper end is set, when water quality to be measured is filled to liquid level more than water valve, control unit controls water valve closure, opens titration slot titration and works as
Preceding invisible spectro water quality；External RTC and external crystal-controlled oscillation are connect with control unit, and control unit passes through output PWM wave control two
A ultraviolet source issues the ultraviolet light of varying strength and frequency, and ultraviolet light passes through spectrophotometric device inner passage respectively and is irradiated to pair
In the silicon photocell sensor answered, then optical signal is converted to electric signal, and input signal conditioning by silicon photocell sensor
Amplifying circuit amplifies processing to the electric signal, finally passes through multichannel ADC conversion module input control cell processing.
Optionally, data access module includes SD card data dynamic access module and EEPROM data cache module, SD card
Data dynamic access module is bi-directionally connected with control unit and host computer respectively, and EEPROM data cache module and control unit connect
It connects.
Optionally, sliding block includes stepper motor, fixed pulley and movable pulley, and fixed pulley is fixed on scalable fixed bracket
Upper end, movable pulley is fixed on box body on the lateral wall of scalable fixed bracket side, and with scalable fixed bracket phase
Connection, stepper motor are fixed on box body top, are socketed on stepper motor output shaft by the draught line that fixed pulley is drawn, single-chip microcontroller
Control stepper motor rotates clockwise or counterclockwise, and drives box body to move up and down in vertical direction, and movable pulley is with box body
It moves up and down.
Optionally, power module includes DC power supply drive module and voltage amplification module, and DC power supply drive module is defeated
It inputs and connects with voltage amplification module out, voltage amplification module output end is connect with each modular power source input terminal respectively.
In another embodiment of the present invention, a kind of monitoring method based on water quality automonitor under multifunctional water, including with
Lower step:
(1) monitor is first debugged before starting measurement: scalable fixed stent length being adjusted to adapt to the height of current level
Scalable fixed bracket is inserted under water by degree, and it is firm fixed to insert；
(2) judge whether measurement switch is opened, if measurement switch has been opened, to control unit input the current depth of water and
Box body declines unit height value every time, and executes step (3)；If it is not, then continuing to execute step (2)；
(3) before starting monitoring, judge whether present cassette height is more than or equal to the water depth value of input, if before starting monitoring
It finds that current falling head is more than or equal to the water depth value of input, then illustrates that step (2) input is wrong, need return step
(2) the current depth of water and box body are re-entered and declines unit height value every time；If it is not, thening follow the steps (4)；
(4) control unit control stepper motor rotates forward, and so that box body is declined a unit height value, and monitor current depth of water position
The different quality parameter value set；
(5) one-shot measurement terminates, and control unit recalculates and judges currently whether falling head has been more than or equal to input
Water depth value, if not, then it represents that instrument reaches the bottom not yet, and return step (4) executes；If so, thening follow the steps (6)；
(6) control unit control stepper motor reversion, makes box body rise a unit height value；
(7) control unit calculates and judges currently to have gone up the water depth value whether height is more than or equal to input, if it is not, then table
Show that instrument reaches the water surface or more not yet, return step (6) executes；If so, indicate that box body has arrived at the water surface or more, this
Measurement terminates.
Further, the method for multiple water quality parameter values of current depth of water position is monitored in step (4) are as follows:
(1) after box body reaches commitment positions, water valve is opened in control unit control, allows extraneous water quality above box body
Water inlet flows into test tube, if the priming charge matter water surface reaches water valve or more, control unit controls water valve and closes, and reaches water sampling
Purpose；
(2) control unit is according to currently needing the water quality parameter measured the control titration slot current water of different reagent titration
Sample closes titration slot after the completion of titration；
(3) control unit output frequency be i PWM wave to ultraviolet source, make its sending corresponding frequencies and intensity it is ultraviolet
Light measures current water quality parameter α using spectrophotometry, surveys n times respectively with two silicon photocell sensors, remove maximum value and
Its average value is taken after minimum value, and current water quality parameter result is respectively stored in SD card；Wherein water quality parameter α is water quality
COD concentration, nitrogen content or pH value, i indicate to get the frequency of PWM wave required for current water quality parameter α.
The utility model has the advantages that compared with prior art, present invention employs at the spectrophotometry of multi-path measurement different water depth
COD, nitrogen content, pH value, realize automation equipment, avoid secondary pollution, save the cost, improve water quality monitoring accuracy and complete
While the property of face, a large amount of manpower, material resources and financial resources are saved, meanwhile, instrument supports in-site measurement, long-range monitoring, is particularly suitable for open country
Outer water quality measurement；Instrument is effectively reduced irrelevant factor and water quality is surveyed by using multi-channel measurement different quality parameter
The interference of amount makes to measure more accurate quick；SD card data dynamic access function is introduced, makes to operate simpler convenience, simultaneously
Equipment instrument is small to be convenient for carrying, and cheap, is more close to practical application, and meet industry to a certain extent needs with personal
It asks, helps further to improve problem of environmental pollution, there is very high social utility value and the value of environmental protection.
Detailed description of the invention
Fig. 1 is monitor structural schematic diagram of the present invention；
Fig. 2 is monitor circuit connection diagram of the present invention；
Fig. 3 is measurement flow chart of the invention；
Fig. 4 is the method flow diagram of measurement different quality parameter of the invention.
Specific embodiment
Technical solution of the present invention is described in detail in the following with reference to the drawings and specific embodiments.
The present invention implements water quality automonitor and monitoring method under a kind of multifunctional water, can be realized multichannel light splitting light
Degree method measures water-quality COD concentration, nitrogen content, pH value at different water depth, automatically completes the sampling of water quality at different water depth, drips
Fixed, parameter measurement, SD card data dynamic access, in-site measurement and off-line monitoring function.Wherein STM32F103RBT6 is master chip
(i.e. control unit, similarly hereinafter) coordinates each module and orderly works.
Water quality automonitor under a kind of multifunctional water, apparatus measures automation, measurement parameter is comprehensive, and measurement result is simple
Accurately, it is particularly suitable for water quality monitoring at offline water quality monitoring and field different water depth.The monitor includes scalable fixed branch
Frame, box body, slave computer, sliding block and power module, wherein scalable fixed bracket is fixed in water, plays retainer instrument
Effect；Box body is connect by sliding block with scalable fixed bracket, and can be risen in water according to the movement of sliding block
Or decline；Slave computer and power module are fixed in box body.
As depicted in figs. 1 and 2, water quality automonitor under multifunctional water, wherein scalable fixed bracket is by two section height
Adjustable stainless steel iron pipe composition, can adjust its length, the scalable fixed adjustable length of bracket is enough according to the depth of water
Long and guarantee highest point is more than the distance of at least one box body height of the water surface, to guarantee that box body is in the water surface in initial position
On；Scalable fixed bracket is divided into two sections up and down, and upper section is telescopic joint, and lower section is fixed knot, and telescopic joint lower end has one
Multiple fixation holes are distributed with every same distance on fixed knot in a night bolt, when night bolt is inserted into different fixation holes,
Entire scalable fixed bracket has different height, only needs to press night bolt in fixation hole then when needing to adjust height
It can move up and down telescopic joint, adjust scalable fixed support height.When box body needs to decline, it is only necessary to control stepper motor
Rotation, then box body can decline a distance along scalable fixed bracket by fixed pulley and movable pulley.
The box body only has water inlet to have opening, remaining four sides seals, and prevents instrument in box body built-in water
Waterlogged damage circuit is provided with slave computer and power module in box body, and box body top is additionally provided with measurement switch, for starting and
Close monitor；Box body is connected by sliding block with adjustable stationary barrier.
The slave computer includes single-chip microcontroller, multichannel spectrophotometry water quality module and data access module, single-chip microcontroller
As the core board of instrument, it is placed in box body bottom, is connected respectively with other modules, data processing is completed and order controls, it is described
Single-chip microcontroller includes control unit, outside RTC, external crystal-controlled oscillation, signal condition amplifying circuit and multichannel ADC conversion module, described
Multichannel spectrophotometry water quality module includes firm banking, binary channels spectrophotometric device, test tube fixing device, silicon photocell
Sensor 1, silicon photocell sensor 2, ultraviolet source 1, ultraviolet source 2, titration slot and water valve, binary channels spectrophotometric device are fixed
On the fixed base, it is equipped with optical path on-off switch in test tube fixing device inner wall, the test tube for holding test agent is placed on
In test tube fixing device, and its face box body water inlet that is open, water valve are set to test tube fixing device upper end, when water quality to be measured fills
When completely to liquid level more than water valve, control unit controls water valve closure, opens the current invisible spectro water quality of titration slot titration；It is external
RTC and external crystal-controlled oscillation are connect with control unit, and control unit is issued different strong by output PWM wave two ultraviolet sources of control
It spends and the ultraviolet light of frequency, binary channels spectrophotometric device middle part is opened there are two the optical channel placed is intersected, the both ends of optical channel are divided
Not Fang Zhi ultraviolet source and silicon photocell sensor, ultraviolet light pass through respectively spectrophotometric device inner passage be irradiated to it is corresponding
In silicon photocell sensor, then optical signal is converted to electric signal by silicon photocell sensor, and then input signal conditioning is put
Big circuit amplifies processing to the electric signal, finally passes through multichannel ADC conversion module input control cell processing；Using two
A ultraviolet source can measure the water quality parameter of different data range respectively, titrate in slot and be placed with different enough titer reagents,
Test agent is formed for titrating water quality stoste, the pin of water valve and control unit is connected directly and is directly controlled by control unit
It is opened and closed.Described control unit using ARM handle chip STM32F103RBT6, the signal condition amplifying circuit include by
The voltage amplifier circuit and rc filter circuit of OPA2336UA chip composition, amplification and filtering for analog signal；It is described
Multichannel ADC conversion module is equipped with AD7705 high precision analogue conversion chip, and acquisition precision is up to 16, using SPI mode
It is communicated with control unit, and uses dma mode, realize that multi channel signals acquire simultaneously.
The data access module includes SD card data dynamic access module and EEPROM data cache module, SD card data
Dynamic access module is bi-directionally connected with control unit and host computer respectively, and the EEPROM data cache module and control unit connect
It connects；Complete the offline storage of data.The power module is built in box body, including DC power supply drive module and voltage amplification
Module, DC power supply drive module output with voltage amplification module input connect, voltage amplification module output end respectively with each mould
The connection of block power input is each module for power supply of instrument.The voltage amplification module is powered by DC power supply drive module, according to
Multiple PT1301 chips separately design amplifying circuit, and respectively disparate modules provide operating voltage.The DC power supply drives mould
Block by two section 1.5v dry cell batteries at.
The sliding block includes stepper motor, fixed pulley and movable pulley, and fixed pulley is fixed on scalable support bracket fastened
Top, movable pulley are fixed on box body on the lateral wall of scalable fixed bracket side, and close with scalable fixed bracket
Fitting, stepper motor are fixed on box body top, are socketed on stepper motor output shaft by the draught line that fixed pulley is drawn, if stepping
Motor rotates clockwise or counter-clockwise, and will drive box body and moves in vertical direction, and movable pulley moves down in vertical direction
Dynamic, movable pulley plays the movement of lubrication box body and box body is fixed to scalable fixation and prop up while moving up and down with box body
Effect on frame.Wherein, stepper motor fixing end is welded on above box portion left, and box body passes through sliding block and scalable fixation
Bracket connection, by control stepper motor rotation, reach adjustment oneself height, measurement different water depth at water quality situation mesh
's.
As shown in figure 3, the method for water quality automonitor whole monitoring water quality is as follows under multifunctional water:
(1) monitor is first debugged before starting measurement: scalable fixed stent length being adjusted to adapt to the height of current level
Scalable fixed bracket is inserted under water by degree, and it is firm fixed to insert；
(2) judge whether measurement switch is opened, if measurement switch has been opened, to control unit input the current depth of water and
Box body declines unit height value every time, and executes step (3)；If it is not, then continuing to execute step (2)；
(3) before starting monitoring, judge whether present cassette height is more than or equal to the water depth value of input, if before starting monitoring
It finds that current falling head is more than or equal to the water depth value of input, then illustrates that step (2) input is wrong, need return step
(2) the current depth of water and box body are re-entered and declines unit height value every time；If it is not, thening follow the steps (4)；
(4) control unit control stepper motor rotates forward, and so that box body is declined a unit height value, and monitor current depth of water position
The different quality parameter value set；
(5) one-shot measurement terminates, and control unit recalculates and judges currently whether falling head has been more than or equal to input
Water depth value, if not, then it represents that instrument reaches the bottom not yet, and return step (4) executes；If so, thening follow the steps (6)；
(6) control unit control stepper motor reversion, makes box body rise a unit height value；
(7) control unit calculates and judges currently to have gone up the water depth value whether height is more than or equal to input, if it is not, then table
Show that instrument reaches the water surface or more not yet, return step (6) executes；If so, indicate that box body has arrived at the water surface or more, this
Measurement terminates.
Referring to fig. 4, the specific method and step of different quality parameter are measured in the step (4) are as follows:
(41) after box body reaches commitment positions, water valve is opened in control unit control, allows extraneous water quality above box body
Water inlet flow into test tube in, if the priming charge matter water surface reach water valve more than, control unit control water valve close, reach water intaking
The purpose of sample；
(42) control unit is current according to currently needing the different reagent of the water quality parameter measured control titration slot to titrate
Water sample closes titration slot after the completion of titration；
(43) control unit output frequency be i PWM wave to ultraviolet source, make its sending corresponding frequencies and intensity it is ultraviolet
Light measures current water quality parameter α using spectrophotometry, surveys n times respectively with two silicon photocell sensors, remove maximum value and
Its average value is taken after minimum value, and current water quality parameter result is respectively stored in SD card；Wherein water quality parameter α is water quality
COD concentration, nitrogen content or pH value, i indicate to get the frequency of PWM wave required for current water quality parameter α.
In short, the present invention realizes the COD, nitrogenous at the spectrophotometry measurement different water depth of multi-path using STM32
Amount, pH value realize automation equipment, avoid secondary pollution, save the cost, improve water quality monitoring accuracy and comprehensive same
When, a large amount of manpower, material resources and financial resources are saved, meanwhile, instrument supports in-site measurement, long-range monitoring, is particularly suitable for field water survey
Amount；Instrument is effectively reduced irrelevant factor for the interference of water quality measurement by using multi-channel measurement different quality parameter,
Make to measure more accurate quick；SD card data dynamic access function is introduced, makes to operate simpler convenience while equipment instrument is small
It is convenient for carrying, and cheap, is more close to practical application, meet industry and demands of individuals to a certain extent, facilitate
Further improve problem of environmental pollution, there is very high social utility value and the value of environmental protection.
Claims (10)
1. water quality automonitor under a kind of multifunctional water, it is characterised in that: including scalable fixed bracket, box body, slave computer,
Sliding block and power module, in which:
Scalable fixed pedestal lower end is fixed in water, for fixing entire monitor；
Box body sealing, top are provided with a hole, and box portion outside is equipped with a measurement switch；
Slave computer is built in box body, for controlling sliding block and acquisition water quality parameter data, and by the water quality parameter of acquisition
Data are uploaded to host computer；
Sliding block is for connecting box body and scalable fixed bracket；
Power module is built in box body, is each module for power supply of monitor；
Slave computer controls sliding block, moves up and down box body in vertical direction, and then acquires multiple water quality of different water depth
Parameter.
2. water quality automonitor under a kind of multifunctional water according to claim 1, it is characterised in that: scalable fixed branch
Frame includes upper and lower two sections stainless steel iron pipe, and upper section is telescopic joint, and lower section is fixed knot, and telescopic joint lower end is inserted with a spring
It sells, multiple fixation holes with night bolt cooperation is distributed on fixed knot, it is whole when night bolt is inserted into different fixation holes
There is a scalable fixed bracket different height, telescopic joint and fixed knot to be fixedly connected by night bolt with fixation hole.
3. water quality automonitor under a kind of multifunctional water according to claim 1, it is characterised in that: inboard wall of cartridge is equipped with
Waterproof layer, and slave computer and power module are located inside waterproof layer.
4. water quality automonitor under a kind of multifunctional water according to claim 1, it is characterised in that: slave computer includes single
Piece machine, multichannel spectrophotometry water quality module and data access module, the measurement of multichannel spectrophotometry water quality module
Water quality information is converted to electric signal, then exports to single-chip microcontroller and is handled, and exports data to data after single-chip microcontroller processing and deposits
Modulus block reads data from data access module by host computer.
5. water quality automonitor under a kind of multifunctional water according to claim 4, it is characterised in that: single-chip microcontroller includes control
Unit, outside RTC, external crystal-controlled oscillation, signal condition amplifying circuit and multichannel ADC conversion module processed, multichannel spectrophotometric are surveyed
Measuring water quality module includes firm banking, binary channels spectrophotometric device, test tube fixing device, silicon photocell sensor 1, silicon photocell
Sensor 2, ultraviolet source 1, ultraviolet source 2, titration slot and water valve, binary channels spectrophotometric device is fixed on the fixed base,
Test tube fixing device inner wall is equipped with optical path on-off switch, and the test tube for holding test agent is placed in test tube fixing device,
And test tube opening face box body top drilling, water valve are set to test tube fixing device upper end, fill when water quality to be measured to liquid level and exist
When more than water valve, control unit controls water valve closure, opens titration slot and titrates current invisible spectro water quality；External RTC and outside
Crystal oscillator is connect with control unit, and control unit controls two ultraviolet sources by output PWM wave and issues varying strength and frequency
Ultraviolet light, ultraviolet light passes through spectrophotometric device inner passage respectively and is irradiated in corresponding silicon photocell sensor, then light
Signal is converted to electric signal by silicon photocell sensor, and input signal conditioning amplifying circuit amplifies place to the electric signal
Reason finally passes through multichannel ADC conversion module input control cell processing.
6. water quality automonitor under a kind of multifunctional water according to claim 4, it is characterised in that: data access module
Including SD card data dynamic access module and EEPROM data cache module, SD card data dynamic access module is single with control respectively
Member and host computer are bi-directionally connected, and EEPROM data cache module is connect with control unit.
7. water quality automonitor under a kind of multifunctional water according to claim 1, it is characterised in that: sliding block includes
Stepper motor, fixed pulley and movable pulley, fixed pulley are fixed on scalable support bracket fastened upper end, and it is close that movable pulley is fixed on box body
On the lateral wall of scalable fixed bracket side, and it is connected with scalable fixed bracket, stepper motor is fixed on box body top,
It is socketed on stepper motor output shaft by the draught line that fixed pulley is drawn, single-chip microcontroller controls stepper motor clockwise or counter-clockwise
Rotation drives box body to move up and down in vertical direction, and movable pulley is moved up and down with box body.
8. water quality automonitor under a kind of multifunctional water according to claim 1, it is characterised in that: power module includes
DC power supply drive module and voltage amplification module, the output of DC power supply drive module are connected with the input of voltage amplification module, electricity
Pressure amplification module output end is connect with each modular power source input terminal respectively.
9. the monitoring method of water quality automonitor under a kind of a kind of described in any item multifunctional waters based on claim 1-8,
Characterized by comprising the following steps:
(1) monitor is first debugged before starting measurement: scalable fixed stent length being adjusted to adapt to the height of current level, it will
Scalable fixed bracket insertion is underwater, and it is firm fixed to insert；
(2) judge whether measurement switch is opened, if measurement switch has been opened, input the current depth of water and box body to control unit
Decline unit height value every time, and execute step (3)；If it is not, then continuing to execute step (2)；
(3) before starting monitoring, judge whether present cassette height is more than or equal to the water depth value of input, if just sending out before starting monitoring
Now current falling head is more than or equal to the water depth value of input, then illustrates that step (2) input is wrong, need return step (2) weight
It newly inputs the current depth of water and box body and declines unit height value every time；If it is not, thening follow the steps (4)；
(4) control unit control stepper motor rotates forward, and so that box body is declined a unit height value, and monitor current depth of water position
Different quality parameter value；
(5) one-shot measurement terminates, and control unit recalculates and judges whether current falling head is more than or equal to the water of input
Deep value, if not, then it represents that instrument reaches the bottom not yet, and return step (4) executes；If so, thening follow the steps (6)；
(6) control unit control stepper motor reversion, makes box body rise a unit height value；
(7) control unit calculates and judges currently to have gone up the water depth value whether height is more than or equal to input, if not, then it represents that instrument
Device reaches the water surface or more not yet, and return step (6) executes；If so, indicate that box body has arrived at the water surface or more, this measurement
Terminate.
10. water quality automatic monitoring method under a kind of multifunctional water according to claim 9, which is characterized in that in step (4)
The method for monitoring multiple water quality parameter values of current depth of water position are as follows:
(1) after box body reaches commitment positions, water valve is opened in control unit control, allows water inlet of the extraneous water quality above box body
Mouth flows into test tube, if the priming charge matter water surface reaches water valve or more, control unit controls water valve and closes, and reaches the mesh of water sampling
's；
(2) control unit is according to currently needing the water quality parameter measured the control titration slot current water sample of different reagent titration,
Titration slot is closed after the completion of titration；
(3) PWM wave that control unit output frequency is i makes it issue the ultraviolet light of corresponding frequencies and intensity, adopts to ultraviolet source
Current water quality parameter α is measured with spectrophotometry, n times is surveyed respectively with two silicon photocell sensors, removes maximum value and minimum
Its average value is taken after value, and current water quality parameter result is respectively stored in SD card；Wherein water quality parameter α is the COD of water quality
Concentration, nitrogen content or pH value, i indicate to get the frequency of PWM wave required for current water quality parameter α.
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| CN201811137986.1A CN109270014A (en) | 2018-09-28 | 2018-09-28 | Water quality automonitor and monitoring method under a kind of multifunctional water |
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Application publication date: 20190125 |