CN103645290A - Water quality online detector - Google Patents
Water quality online detector Download PDFInfo
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- CN103645290A CN103645290A CN201310634402.2A CN201310634402A CN103645290A CN 103645290 A CN103645290 A CN 103645290A CN 201310634402 A CN201310634402 A CN 201310634402A CN 103645290 A CN103645290 A CN 103645290A
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- water quality
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- light source
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000001514 detection method Methods 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 claims description 15
- 238000004457 water analysis Methods 0.000 claims description 13
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a water quality online detector. The water quality online detector comprises an industrial control liquid crystal screen, a MCU (microprogrammed control unit), a light source controller, a data collector, a power module and a multi-wavelength optical detection device. The water quality online detector combines a water quality analysis sensor and the multi-wavelength optical detection device, on the one hand, the water quality analysis sensor is used for detecting simple water quality parameters such as conductivity, PH value and dissolved oxygen, on the other hand, the multi-wavelength optical detection device is used for detecting water quality parameters needing to be simply pretreated according to a photometer principle, such as COD (chemical oxygen demand), ammonia nitrogen, total phosphorus, and BOD (biological oxygen demand), so that the water quality online detector truly realizes multifunctional water quality online detection.
Description
Technical field
The present invention relates to detector technical field, refer in particular to a kind of water quality on-line detector.
Background technology
For water quality detection, conventionally need to detect many kinds of parameters, as conventional characteristic parameters such as the COD in water, BOD, ammonia nitrogen, total phosphorus, total nitrogen, temperature, pH value, conductivity, dissolved oxygen DO and turbidity.COD-definition chemical oxygen demand (COD) (COD or CODcr) refers under certain strict condition, reducing substances in water is under the effect of additional strong oxidizer, the quantity of oxidized decomposition time institute's oxygen consumed agent, mg/L with oxygen represents, chemical oxygen demand (COD) has reflected the degree that polluted by reducing substances.BOD(Biochemical Oxygen Demand writes a Chinese character in simplified form): biochemical oxygen demand or bod (chemical oxygen demand (COD) on the five), represent a comprehensive indication of the aerobic pollution matter content such as organism in water.Illustrate that organism in water is because the biochemical action of microorganism carries out oxygenolysis, the total quantity of the oxygen in water that consumes when making it inorganicization or aerifying.Ammonia nitrogen refers to the nitrogen existing with free ammonia (NH3) and ammonium ion (NH4+) form in water.The organic nitrogen content of animality is generally high compared with vegetalitas organism.Total phosphorus is that water sample is transformed into by the phosphorus of various forms the result of measuring after orthophosphate after clearing up, with the metering of the phosphorous milligram of every premium on currency sample number.The numerical value of pH value representation aqueous solution acidity or alkaline degree; Conductivity is tensor, in water quality detection, is the ability with the solution conduction current of numeral; The dividing potential drop of oxygen in the content of oxygen in water and air is, the temperature of water has substantial connection, oxygen in water number be an index weighing water body self-purification ability; Turbidity refers to the obstruction degree occurring when suspension sees through light in water.
For COD, BOD, ammonia nitrogen, total phosphorus, the isoparametric detection of total nitrogen, can detect by spectrophotometer, material molecule is under different conditions, the situations such as the wavelength of absorption or emission spectrum, intensity, polarization state, and the architectural feature of this material has intrinsic relation.The molecular structure of different material is different, corresponding to different Absorption and emission spectras; When same material concentration is different, different in the absorption intensity of same absorption peak position.Therefore,, by detecting the degree of absorption of a certain material to special wavelength light in water, can determine the concentration of this material in water.In prior art, in water quality detection, need to carry out pre-treatment after dripping corresponding reagent, general detecting instrument is all that pretreating device separates with pick-up unit, the inconvenience of operating machines, and only adopt single source, the water sample in a certain concentration range is detected.When surveyed material concentration no to scale scope, need to change the instrument of other ranges, this is concerning the water sample of unknown concentration scope, and the accuracy of range external pelivimetry result is poor, and detection method has uncertainty, and testing process is loaded down with trivial details.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its fundamental purpose is to provide its water quality on-line detector that can conveniently detect multiple different quality parameter.
For achieving the above object, the present invention adopts following technical scheme: a kind of water quality on-line detector, comprise industry control liquid crystal display, MCU unit, light source controller, data acquisition unit, power module and multi-wavelength optical pick-up unit, described data acquisition unit includes water analysis sensor group, data acquisition module, digital signal conditioning module and digital signal sending module, described multi-wavelength optical pick-up unit comprises a plurality of light source detection passages, this light source detection passage comprises monochromatic wavelength light source, absorption cell and photoelectric detector, described MCU unit is by light source controller conducting monochromatic source, the light that monochromatic source is sent is transferred to absorption cell, after the water sample in absorption cell absorbs, unnecessary light transmission receives and converts to electric signal to photodetector, this signal is input to data acquisition unit, data acquisition unit is transferred to detection signal and in MCU unit, carries out computing, the collection signal of described water analysis sensor group is delivered in data acquisition module simultaneously, signal in data acquisition module transfers in digital signal conditioning module, digital signal conditioning module transfers to the signal of handling well in digital signal sending module, the output terminal of described digital signal sending module is connected to MCU unit, this MCU unit is sent to industry control liquid crystal display by the data after computing, described power module is connected with industry control liquid crystal display, data acquisition unit and the power interface of multi-wavelength optical pick-up unit respectively.
As a kind of preferred version, described multi-wavelength optical pick-up unit comprises 3 light source detection passages.
As a kind of preferred version, described monochromatic source, photoelectric detector and absorption cell are on same straight line.
As a kind of preferred version, described water analysis sensor group is comprised of temperature sensor, acidity-basicity sensor, conductivity sensor and dissolved oxygen sensor.
As a kind of preferred version, described industry control liquid crystal display adopts the very color touch-screen of numeral, ARM9 kernel, and WinCE embedded OS, configuration application software, and be provided with RJ45 Ethernet interface, USB 2.0 interfaces, RS232 interface and RS485 interface.
As a kind of preferred version, described digital signal conditioning module adopts 16,8 tunnel high-precision A/D analog digital conversion chip.
As a kind of preferred version, described monochromatic wavelength light source is to penetrate monochromatic luminescent device or optical fiber.
As a kind of preferred version, the wavelength of described a plurality of monochromatic wavelength light sources is different.
The present invention compared with prior art has obvious advantage and beneficial effect, the present invention is by adopting water analysis sensor combinations multi-wavelength optical pick-up unit, on the one hand, by this water analysis sensor, measure simple water quality parameter, as water quality parameters such as conductivity, pH value, dissolved oxygen DOs, by this multi-wavelength optical pick-up unit, measuring on the other hand need to be through simple pre-treatment and the water quality parameter of measuring by photometer principle, as water quality parameters such as COD, ammonia nitrogen, total phosphorus, BOD, really realize Multifunctional water on-line detector.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the present invention's embodiment.
Embodiment
Please refer to shown in Fig. 1, it has shown the workflow of the present invention's preferred embodiment, a kind of water quality on-line detector, comprise industry control liquid crystal display, MCU unit, light source controller, data acquisition unit, power module and multi-wavelength optical pick-up unit, described data acquisition unit includes water analysis sensor group, data acquisition module, digital signal conditioning module and digital signal sending module, described multi-wavelength optical pick-up unit comprises a plurality of light source detection passages, this light source detection passage comprises monochromatic wavelength light source, absorption cell and photoelectric detector, described MCU unit is by light source controller conducting monochromatic source, the light that monochromatic source is sent is transferred to absorption cell, after the water sample in absorption cell absorbs, unnecessary light transmission receives and converts to electric signal to photodetector, this signal is input to data acquisition unit, data acquisition unit is transferred to detection signal and in MCU unit, carries out computing, the collection signal of described water analysis sensor group is delivered in data acquisition module simultaneously, signal in data acquisition module transfers in digital signal conditioning module, digital signal conditioning module transfers to the signal of handling well in digital signal sending module, the output terminal of described digital signal sending module is connected to MCU unit, this MCU unit is sent to industry control liquid crystal display by the data after computing, described power module is connected with industry control liquid crystal display, data acquisition unit and the power interface of multi-wavelength optical pick-up unit respectively.
As a kind of preferred version, described multi-wavelength optical pick-up unit comprises 3 light source detection passages.
As a kind of preferred version, described monochromatic source, photoelectric detector and absorption cell are on same straight line.
As a kind of preferred version, described water analysis sensor group is comprised of temperature sensor, acidity-basicity sensor, conductivity sensor and dissolved oxygen sensor.
As a kind of preferred version,
As a kind of preferred version, described industry control liquid crystal display adopts the very color touch-screen of numeral, ARM9 kernel, and WinCE embedded OS, configuration application software, and be provided with RJ45 Ethernet interface, USB 2.0 interfaces, RS232 interface and RS485 interface.
As a kind of preferred version, described digital signal conditioning module adopts 16,8 tunnel high-precision A/D analog digital conversion chip.
As a kind of preferred version, described monochromatic wavelength light source is to penetrate monochromatic luminescent device or optical fiber.
As a kind of preferred version, the wavelength of described a plurality of monochromatic wavelength light sources is different.
Design focal point of the present invention is: the present invention is by adopting water analysis sensor combinations multi-wavelength optical pick-up unit, on the one hand, by this water analysis sensor, measure simple water quality parameter, as water quality parameters such as conductivity, pH value, dissolved oxygen DOs, by this multi-wavelength optical pick-up unit, measuring on the other hand need to be through simple pre-treatment and the water quality parameter of measuring by photometer principle, as water quality parameters such as COD, ammonia nitrogen, total phosphorus, BOD, really realize Multifunctional water on-line detector.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, therefore every foundation technical spirit of the present invention is to any trickle modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a water quality on-line detector, it is characterized in that: comprise industry control liquid crystal display, MCU unit, light source controller, data acquisition unit, power module and multi-wavelength optical pick-up unit, described data acquisition unit includes water analysis sensor group, data acquisition module, digital signal conditioning module and digital signal sending module, described multi-wavelength optical pick-up unit comprises a plurality of light source detection passages, this light source detection passage comprises monochromatic wavelength light source, absorption cell and photoelectric detector, described MCU unit is by light source controller conducting monochromatic source, the light that monochromatic source is sent is transferred to absorption cell, after the water sample in absorption cell absorbs, unnecessary light transmission receives and converts to electric signal to photodetector, this signal is input to data acquisition unit, data acquisition unit is transferred to detection signal and in MCU unit, carries out computing, the collection signal of described water analysis sensor group is delivered in data acquisition module simultaneously, signal in data acquisition module transfers in digital signal conditioning module, digital signal conditioning module transfers to the signal of handling well in digital signal sending module, the output terminal of described digital signal sending module is connected to MCU unit, this MCU unit is sent to industry control liquid crystal display by the data after computing, described power module is connected with industry control liquid crystal display, data acquisition unit and the power interface of multi-wavelength optical pick-up unit respectively.
2. a kind of water quality on-line detector according to claim 1, is characterized in that: described multi-wavelength optical pick-up unit comprises 3 light source detection passages.
3. a kind of water quality on-line detector according to claim 1, is characterized in that: described monochromatic source, photoelectric detector and absorption cell are on same straight line.
4. a kind of water quality on-line detector according to claim 1, is characterized in that: described water analysis sensor group is comprised of temperature sensor, acidity-basicity sensor, conductivity sensor and dissolved oxygen sensor.
5. a kind of water quality on-line detector according to claim 1, it is characterized in that: described industry control liquid crystal display adopts the very color touch-screen of numeral, ARM9 kernel, WinCE embedded OS, configuration application software, and be provided with RJ45 Ethernet interface, USB 2.0 interfaces, RS232 interface and RS485 interface.
6. a kind of water quality on-line detector according to claim 1, is characterized in that: described digital signal conditioning module adopts 16,8 tunnel high-precision A/D analog digital conversion chip.
7. a kind of water quality on-line detector according to claim 1, is characterized in that: described monochromatic wavelength light source is to penetrate monochromatic luminescent device or optical fiber.
8. a kind of water quality on-line detector according to claim 1, is characterized in that: the wavelength of described a plurality of monochromatic wavelength light sources is different.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310634402.2A CN103645290A (en) | 2013-11-30 | 2013-11-30 | Water quality online detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310634402.2A CN103645290A (en) | 2013-11-30 | 2013-11-30 | Water quality online detector |
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| CN103645290A true CN103645290A (en) | 2014-03-19 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983585A (en) * | 2014-06-06 | 2014-08-13 | 力合科技（湖南）股份有限公司 | Multi-parameter water quality analyzer |
| CN104849423A (en) * | 2015-03-19 | 2015-08-19 | 信发集团有限公司 | Method for rapidly determining comprehensive organic pollution indexes in water |
| CN105158409A (en) * | 2015-06-23 | 2015-12-16 | 中山欧麦克仪器设备有限公司 | An online ammonia nitrogen monitor with remote wireless transmission |
| CN105259128A (en) * | 2015-11-12 | 2016-01-20 | 浙江微兰环境科技有限公司 | COD and ammonia nitrogen multiparameter online monitoring device and system |
| CN105640334A (en) * | 2016-03-25 | 2016-06-08 | 李�杰 | Portable watering device |
| CN110082302A (en) * | 2019-05-28 | 2019-08-02 | 艾西姆(辽宁)环境技术有限公司 | A kind of landfill leachate biochemical tail water COD on-line monitoring method |
| CN111239354A (en) * | 2020-01-19 | 2020-06-05 | 临沂大学 | Multifunctional intelligent detection device for organic wastewater |
| CN113686796A (en) * | 2021-08-10 | 2021-11-23 | 淮北师范大学 | Water quality measuring device and method using multispectral sensor |
| CN115128022A (en) * | 2022-05-24 | 2022-09-30 | 天津大学青岛海洋技术研究院 | Seawater total phosphorus and total nitrogen online photometric determination interactive system and control method |
| CN115856236A (en) * | 2022-11-04 | 2023-03-28 | 华能曲阜热电有限公司 | Water quality on-line monitoring device for heat supply network heat exchanger |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983585A (en) * | 2014-06-06 | 2014-08-13 | 力合科技（湖南）股份有限公司 | Multi-parameter water quality analyzer |
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| CN113686796A (en) * | 2021-08-10 | 2021-11-23 | 淮北师范大学 | Water quality measuring device and method using multispectral sensor |
| CN115128022A (en) * | 2022-05-24 | 2022-09-30 | 天津大学青岛海洋技术研究院 | Seawater total phosphorus and total nitrogen online photometric determination interactive system and control method |
| CN115856236A (en) * | 2022-11-04 | 2023-03-28 | 华能曲阜热电有限公司 | Water quality on-line monitoring device for heat supply network heat exchanger |
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Application publication date: 20140319 |