CN206906237U - Water quality testing meter - Google Patents
Water quality testing meter Download PDFInfo
- Publication number
- CN206906237U CN206906237U CN201720779235.4U CN201720779235U CN206906237U CN 206906237 U CN206906237 U CN 206906237U CN 201720779235 U CN201720779235 U CN 201720779235U CN 206906237 U CN206906237 U CN 206906237U
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- Prior art keywords
- water quality
- circuit
- quality testing
- processor
- testing meter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000012372 quality testing Methods 0.000 title claims abstract description 32
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 238000005303 weighing Methods 0.000 claims abstract description 14
- 239000004065 semiconductor Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 4
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 230000007812 deficiency Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
It the utility model is related to water quality testing meter, including electric power management circuit, processor, light source, micro spectrometer and sample room；Electric power management circuit is powered to processor, light source and micro spectrometer, and light source and micro spectrometer electrically connect with processor；The light that light source is sent behind sample room by inputting in micro spectrometer；Water quality testing meter also includes amount of reagent detection circuit and constant temperature control circuit, and electric power management circuit detects circuit and constant temperature control circuit power supply to amount of reagent, and amount of reagent detection circuit and constant temperature control circuit electrically connect with processor.Amount of reagent detection circuit of the present utility model can make the amount of addition reagent more accurate, and constant temperature control circuit makes the temperature of testing sample constant, eliminates the error caused by temperature, thus testing result is more accurate；Amount of reagent is measured using weighing sensor, temperature control is carried out using semiconductor cooler, the volume of equipment can be reduced.
Description
Technical field
The utility model belongs to water quality detecting device technical field, and in particular to a kind of water quality testing meter.
Background technology
Water is the important substance that it is essential that the mankind depend on for existence, today's society, getting worse the problem of water resources shortage,
And the pollution of water resource is one of the main reason for causing water resources shortage, therefore the protection of water resource has become countries in the world
Common concern and the Globalization problem of pay attention to day by day.Modern water quality monitoring technology is water resource environment protection and the skill administered
Art supports.Multi-parameter water quality detector based on modern water quality monitoring technology is the important development side of nowadays water quality detection instrument
Develop to, this quasi-instrument forward direction multi-parameter, online, long-range, network monitoring direction, at the same instrument have miniaturization, it is multi-functional,
The feature such as integrated.
At present, domestic and international water quality inspection technique can realize the detection to multiple element in water, method generally substantially
Have：Titration, ion selective electrode method, the chromatography of ions and spectra methods.Titration and ion selective electrode method have obtained
It is widely applied, its advantage is that equipment is simple and convenient to operate, and still, the result of measure differentiates by artificial experience mostly,
The defects of testing time is long, precision is low, is not easy to field operation be present；The conventional detection means of the chromatography of ions has Conductivity detection
Device, UV-detector and ampere detector, though these detection methods can meet the requirement of some monitorings, qualitative, quantitative means
Single, sensitivity is relatively low.
Optical means is current state-of-the-art water quality detection method, is based particularly on the analysis method of continuous spectrum, can be with
Simultaneously measure multiple water quality parameters, have the advantages that detection speed soon, non-secondary pollution.The measurement general principle of spectra methods
It is Lambert-Beer's law, the concentration of detected solution is different, and the absorption to spectrum is different, and the material dissolved in solution is different, light
Spectrum absorbs also different.Therefore, the impurity component and concentration contained by solution to be measured can be drawn by spectrum analysis.
Utility model content
In view of this, the purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of volume miniaturization, essence
Spend high water quality testing meter.
To realize object above, the utility model adopts the following technical scheme that：
Water quality testing meter, including electric power management circuit, processor, light source, micro spectrometer and sample room；The power supply pipe
It is electric with the processor to the processor, light source and micro spectrometer power supply, the light source and micro spectrometer to manage circuit
Connection；The light that the light source is sent behind the sample room by inputting in the micro spectrometer；
The water quality testing meter also includes amount of reagent detection circuit and constant temperature control circuit, and the electric power management circuit is to institute
State amount of reagent detection circuit and constant temperature control circuit power supply, amount of reagent detection circuit and constant temperature control circuit with the place
Manage device electrical connection.
The container of water body example to be detected is is placed in the sample room, and its one end is provided with collimation lens, and the other end is set
There is condenser lens；
Water quality testing meter also includes optical fiber, and the micro spectrometer is connected by the optical fiber with condenser lens.
The amount of reagent detection circuit includes weighing sensor, amplifying circuit and voltage comparator circuit, the weighing and sensing
Device, amplifying circuit, voltage comparator circuit and processor are sequentially connected electrically；
The weighing sensor is arranged on the bottom of the sample room.
The constant temperature control circuit includes controller, thermistor, driver and semiconductor cooler；The controller with
The processor electrical connection, the thermistor electrically connect with the controller, the controller, driver and semiconductor refrigerating
Device is sequentially connected electrically；
The thermistor and the semiconductor cooler are arranged inside the sample room.
Also include the I/O units electrically connected with the processor.
The I/O units include touch-screen and reset circuit.
Also include the spare interface circuit electrically connected with the processor.
The spare interface circuit includes USB interface, serial communication interface and jtag interface.
Also include the wireless communication module electrically connected with the processor.
The wireless communication module is WiFi module, GPRS module, CDMA module or LTE module.
The utility model uses above technical scheme, and amount of reagent detection circuit can make the amount of addition reagent more accurate；It is permanent
Temperature control circuit makes the temperature of testing sample constant, eliminates the error caused by temperature；Thus testing result is more accurate.This practicality
It is new that amount of reagent is measured using weighing sensor, temperature control is carried out using semiconductor cooler, the volume of equipment can be reduced.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the electrical block diagram of the utility model water quality testing meter；
Fig. 2 is the optical system schematic diagram of the utility model water quality testing meter；
Fig. 3 is the constant temperature control circuit structural representation of the utility model water quality testing meter；
Fig. 4 is the amount of reagent detection electrical block diagram of the utility model water quality testing meter.
In figure：1- electric power management circuits；2- processors；3- light sources；4- micro spectrometers；5- amount of reagent detects circuit；
501- weighing sensors；502- amplifying circuits；503- voltage comparator circuits；6- constant temperature control circuits；601- controllers；602- heat
Quick resistance；603- drivers；604- semiconductor coolers；7- spare interface circuits；8- wireless communication modules；9-I/O units；
901- touch-screens；902- reset circuits；10- sample rooms；11- collimation lenses；12- condenser lenses；13- optical fiber.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only the utility model part of the embodiment, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, belongs to the scope that the utility model is protected.
As shown in figure 1, the utility model provides a kind of water quality testing meter, including electric power management circuit 1, processor 2, light source
3rd, micro spectrometer 4 and sample room 10；Electric power management circuit 1 is powered to processor 2, light source 3 and micro spectrometer 4, the He of light source 3
Micro spectrometer 4 electrically connects with processor 2；The light that light source 3 is sent behind sample room 10 by inputting in micro spectrometer 4.
Wherein, processor 2 uses model S3C2410 arm processor；Pass through usb data between micro spectrometer 4 and processor 2
Line is attached.
Water quality testing meter also includes amount of reagent detection circuit 5 and constant temperature control circuit 6, electric power management circuit 1 give amount of reagent
Detection circuit 5 and constant temperature control circuit 6 are powered, and amount of reagent detection circuit 5 and constant temperature control circuit 6 electrically connect with processor 2.
Further, water quality testing meter also includes the I/O units 9 electrically connected with processor 2.I/O units 9 include touch-screen
901 and reset circuit 902.Touch-screen 901 is used to carry out man-machine interaction, can show that testing result, the temperature of sample room 10 etc. are believed
Breath, it can also be configured the operation such as parameter.Reset circuit 902 is used to reset processor 2.
Further, water quality testing meter also includes the spare interface circuit 7 electrically connected with processor 2.Spare interface circuit 7
Including USB interface, serial communication interface and jtag interface, enable a device to and host computer, such as computer, industrial computer connection group
Net, carry out data interaction.
Further, water quality testing meter also includes the wireless communication module 8 electrically connected with processor 2.Wireless communication module 8
For WiFi module, GPRS module, CDMA module or LTE module, enable a device to access internet, by data upload service
Device.
As shown in Fig. 2 sample room 10 is places the container of water body example to be detected, its one end is provided with collimation lens 11,
The other end is provided with condenser lens 12.Water quality testing meter also includes optical fiber 13, and micro spectrometer 4 passes through optical fiber 13 and condenser lens
12 connections.
The light that light source 3 is sent enters sample room 10 after collimation lens 11, passes through through the light that sample room 10 transmits poly-
Focus lens 12 converge, and are transferred into micro spectrometer 4 through optical fiber 13, and micro spectrometer 4 passes measured data by USB port
Transport in processor 2 and analyzed.This system can detect to the continuous spectrum in the range of 340nm~770nm, and have
Have the advantages that simple in construction, low in energy consumption, accuracy of detection is high.
Light source 3 has the characteristics of small power consumption, price is low, service life is long, and halogen tungsten lamp using 6V/5W halogen tungsten lamp
With excellent filament stability and shock resistance, it is possible to provide wavelength band needed for the detection of water quality instrument, and can be with equipment
Other control circuits are compatible, are common light sources 3 in this quasi-instrument to realize the stability control of light intensity.
As shown in figure 3, amount of reagent detection circuit 5 includes weighing sensor 501, amplifying circuit 502 and voltage comparator circuit
503, weighing sensor 501, amplifying circuit 502, voltage comparator circuit 503 and processor 2 are sequentially connected electrically.Wherein, weigh biography
Sensor 501 is arranged on the bottom of sample room 10.
Further, weighing sensor 501 uses resistance strain type sensor, and its output voltage is mV levels, it is therefore desirable to
Be amplified to V levels by amplifying circuit, could carry out voltage ratio compared with.This scenario-frame is simple and reliable, is advantageously implemented the reality of instrument
With change.
Water quality testing meter is related to plurality of reagents, and in detection process, the amount of reagent deficiency of addition can cause testing result mistake.
A weight is surveyed after sample is added in sample room 10, surveys a weight again after adding reagent, the difference measured twice is reagent
Amount.When amount of reagent deficiency, amount of reagent detection circuit 5 feeds back to processor 2 in time；Processor 2 is shown accordingly on the touchscreen
Information, user is prompted to increase reagent, avoiding the occurrence of reagent deficiency causes the situation of testing result mistake to occur.
The detection method of amount of reagent is various, and conventional detection method has ultrasonic liquid level measuring, optical fluid level detection, buoy liquid
The monitoring etc. in real time of position detection, weighing sensor.Wherein：Ultrasonic wave is complicated with optical fluid level detecting structure, and installation difficulty is high, simultaneously
Cost is higher, be unfavorable for realizing the miniaturization of instrument with it is practical；Float technique easily produces pollution to reagent.With reference to design requirement,
The utility model realizes the real-time monitoring to amount of reagent from weighing sensor detection method.
As shown in figure 4, constant temperature control circuit 6 includes controller 601, thermistor 602, driver 603 and semiconductor system
Cooler 604；Controller 601 electrically connects with processor 2, and thermistor 602 electrically connects with controller 601, controller 601, driving
Device 603 and semiconductor cooler 604 are sequentially connected electrically.Wherein thermistor 602 and semiconductor cooler 604 is arranged at sample
Inside room 10.Further, thermistor 602 is negative tempperature coefficient thermistor.
During water quality detection, sample room 10 is the carrier of sample and reagent reacting, only ensures that sample room 10 is in perseverance
The repeatability and accuracy of instrument test are just can guarantee that under the conditions of temperature.The high-performance that constant temperature control circuit 6 is produced with ADI companies
Chip ADN8830 is core controller, and the temperature of sample room 10 is detected by thermistor 602, feeds back information to ADN8830
Chip, controller 601 is by controlling driver 603 to regulate and control the temperature of sample room 10.
ADN8830 chips be a kind of monolithic TEC of high efficiency output switch pattern (Thermoelectric cooler, half
Conductor refrigerator) closed-loop control system, by thermistor collecting temperature information compared with setting value, according to comparative result
To drive TEC circuits to heat or freeze, so as to reach thermostatically controlled purpose.ADN8830 is using switch output and linear convergent rate
Mode is combined, the ripple of output current can be reduced, peripheral components is reduced, greatly improves efficiency.When the temperature of sample room 10
When differing larger with design temperature, linear output stage works in switching mode；When the temperature of sample room 10 is close to design temperature
When, linear output stage is operated under linear model, and the voltage for being added in TEC both ends is set by the way of PWM pulsewidth modulations, is realized
TEC seamlessly transitting between mode of heating and refrigeration modes.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with the power
The protection domain that profit requires is defined.
Claims (10)
1. water quality testing meter, it is characterised in that：Including electric power management circuit, processor, light source, micro spectrometer and sample room；
The electric power management circuit is to the processor, light source and micro spectrometer power supply, and the light source and micro spectrometer are and institute
State processor electrical connection；The light that the light source is sent behind the sample room by inputting in the micro spectrometer；
The water quality testing meter also includes amount of reagent detection circuit and constant temperature control circuit, the electric power management circuit give the examination
Dose measurement circuit and constant temperature control circuit power supply, amount of reagent detection circuit and constant temperature control circuit with the processor
Electrical connection.
2. water quality testing meter according to claim 1, it is characterised in that：The sample room is placement water body example to be detected
Container, its one end is provided with collimation lens, and the other end is provided with condenser lens；
Water quality testing meter also includes optical fiber, and the micro spectrometer is connected by the optical fiber with the condenser lens.
3. water quality testing meter according to claim 2, it is characterised in that：The amount of reagent detection circuit includes weighing and sensing
Device, amplifying circuit and voltage comparator circuit, the weighing sensor, amplifying circuit, voltage comparator circuit and processor are electric successively
Connection；
The weighing sensor is arranged on the bottom of the sample room.
4. water quality testing meter according to claim 3, it is characterised in that：The constant temperature control circuit includes controller, heat
Quick resistance, driver and semiconductor cooler；The controller electrically connects with the processor, the thermistor and the control
Device electrical connection processed, the controller, driver and semiconductor cooler are sequentially connected electrically；
The thermistor and the semiconductor cooler are arranged inside the sample room.
5. according to the water quality testing meter described in any one of Claims 1-4, it is characterised in that：Also include and processor electricity
The I/O units of connection.
6. water quality testing meter according to claim 5, it is characterised in that：The I/O units include touch-screen and reset electricity
Road.
7. according to the water quality testing meter described in any one of Claims 1-4, it is characterised in that：Also include and processor electricity
The spare interface circuit of connection.
8. water quality testing meter according to claim 7, it is characterised in that：The spare interface circuit includes USB interface, string
Row communication interface and jtag interface.
9. according to the water quality testing meter described in any one of Claims 1-4, it is characterised in that：Also include and processor electricity
The wireless communication module of connection.
10. water quality testing meter according to claim 9, it is characterised in that：The wireless communication module be WiFi module,
GPRS module, CDMA module or LTE module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720779235.4U CN206906237U (en) | 2017-06-29 | 2017-06-29 | Water quality testing meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720779235.4U CN206906237U (en) | 2017-06-29 | 2017-06-29 | Water quality testing meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906237U true CN206906237U (en) | 2018-01-19 |
Family
ID=61292695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720779235.4U Expired - Fee Related CN206906237U (en) | 2017-06-29 | 2017-06-29 | Water quality testing meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244014A (en) * | 2019-07-15 | 2019-09-17 | 石家庄铁路职业技术学院 | Water quality testing meter based on open source hardware |
| CN111272223A (en) * | 2020-03-03 | 2020-06-12 | 太原理工大学 | Multi-parameter water quality dynamic detection system |
-
2017
- 2017-06-29 CN CN201720779235.4U patent/CN206906237U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244014A (en) * | 2019-07-15 | 2019-09-17 | 石家庄铁路职业技术学院 | Water quality testing meter based on open source hardware |
| CN110244014B (en) * | 2019-07-15 | 2024-08-16 | 石家庄铁路职业技术学院 | Water quality detector based on open source hardware |
| CN111272223A (en) * | 2020-03-03 | 2020-06-12 | 太原理工大学 | Multi-parameter water quality dynamic detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 |