CN108489922A - A kind of tap water quality optical detection apparatus and detection method - Google Patents
A kind of tap water quality optical detection apparatus and detection method Download PDFInfo
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- CN108489922A CN108489922A CN201810412887.3A CN201810412887A CN108489922A CN 108489922 A CN108489922 A CN 108489922A CN 201810412887 A CN201810412887 A CN 201810412887A CN 108489922 A CN108489922 A CN 108489922A
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- 238000001514 detection method Methods 0.000 title claims abstract description 57
- 230000003287 optical effect Effects 0.000 title claims abstract description 42
- 239000008399 tap water Substances 0.000 title claims abstract description 26
- 235000020679 tap water Nutrition 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000005622 photoelectricity Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 7
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003894 drinking water pollution Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of tap water quality optical detection apparatus and detection methods, including shell, water inlet, first solenoid valve, optical detecting module, pressure sensor, second solenoid valve, water outlet, optical detecting module, main control unit, display unit, wireless module, power supply system, GPS module, receiving module and monitoring center etc., detection device uses liquid flow path pressure line structure design, integrate Yang product Cai Ji ﹑ optical detecting module Bu Ju ﹑ GPS and Dings that Wei ﹑ Zhi Neng Kong ﹑ power supply modes are various and data wireless transmission function, it is convenient to be connect with tap water pipe line, detection method high degree of automation, it can be accurate, in real time, the measured data of the tap water quality of pipe network setting position is rapidly provided for monitoring center, convenient for unified monitoring management, a large amount of manpower and materials cost is saved.
Description
Technical field
The invention belongs to field of water quality detection, and in particular to one kind being used for tap water quality optical detection apparatus and detection side
Method.
Background technology
With the development of economy, the increase of population, urban drinking water pollution of waterhead is serious, resident living drinking water safety by
To threat.For this purpose, country promulgates《Drinking water standard》, it is specified that the requirement of Drinking Water hygienic quality.Detection at present
Equipment focuses mostly on set on water treatment output end, and water quality detection equipment is difficult to be laid out on a large scale；Mobile detection device is for pipe
Road tip check fee Shi ﹑ are laborious and are difficult to detect in real time, and testing result is also difficult to centralized and unified management.It is difficult under case of emergency
Timely early warning.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of tap water quality optics inspection
Device and detection method are surveyed, the tap water quality optical detection apparatus and detection method are conveniently connect with tap water pipe line, can
Accurately, the measured data of the tap water quality of pipe network setting position in real time, is rapidly provided for monitoring center, and simple in structure,
Control it is highly integrated, it is at low cost, be easy in Unified Set large area monitoring layout.
Technical solution：To achieve the above object, the present invention adopts the following technical scheme that：
A kind of tap water quality optical detection apparatus, it is characterised in that：Including shell, the water inlet being set on shell,
Water outlet, the first solenoid valve for being set to enclosure interior, optical detecting module, pressure sensor, second solenoid valve and master control list
Member, the power supply system for being set to hull outside, wherein
The water inlet, the first solenoid valve, pressure sensor, second solenoid valve, water outlet are sequentially connected shape by pipeline
At a liquid pressure resistance flow path channel, optical detecting module is set between the first solenoid valve and second solenoid valve, and main control unit is set
There are GPS module, display unit and wireless module, main control unit to be separately connected the first solenoid valve, optical detection mould by signal wire
Block, pressure sensor and second solenoid valve, power supply system are used to provide the working power of each circuit module of enclosure interior；
The detection device further includes remotely located monitoring center, and monitoring center is equipped with to be sent for receiving wireless module
Data receiving module.
Preferably, the Photoelectric Detection module include MCU, constant-current source circuit, processing of circuit module, photodetector,
Cuvette for sampling, several monochromatic LED light sources and each monochrome being set between the first solenoid valve and second solenoid valve
The one-to-one photoelectricity UV emitting device of LED light source and infrared launcher, the cuvette are red for storing testing liquid
Outer emitter, UV emitting device and photodetector are set to around cuvette, and MCU electric signals connect main control unit,
For sending MCU to after handling the defeated end signal of photodetector, MCU is connected processing of circuit module by constant-current source circuit
It is connected to each monochromatic LED light source.
The processing of circuit module includes Current Voltage conversion module, filter amplification circuit and analog conversion circuit, photoelectricity
The output end of detector passes sequentially through Current Voltage conversion module, filter amplification circuit and analog conversion circuit and is connected to MCU.
Preferably, the UV emitting device and photodetector are arranged concentrically, infrared launcher and ultraviolet emission
Device is vertically arranged at 90 degree.
Preferably, the power supply system is using any in solar power system, accumulator, wind power system, alternating current
Kind or more than one combination.
The present invention also provides the detection methods of above-mentioned tap water quality optical detection apparatus, which is characterized in that including such as
Lower detecting step：
Step A, the described main control unit controls the first solenoid valve and second solenoid valve is opened, the intracavity liquid discharge of cuvette
While be full of new testing liquid；
Step B, second solenoid valve is closed, pressure sensor measures pressure signal and exports to main control unit；
Step C, after turning off the first solenoid valve, optical detecting module detects water quality parameter to main control unit, passes through display
Unit shows test result, while being transmitted to monitoring center by wireless module and receiving module and showing；It is positioned by GPS module
The present position of detection device.
Preferably, in the step C, optical detecting module includes following detecting step：
Step (i), the constant-current source circuit provide preset constant current according to the instruction of MCU for corresponding monochromatic LED light source
Power supply, driving monochromatic LED light source work, UV emitting device and infrared launcher are sent out through the primary light for being detected water sample
Strong signal；
Original light intensity signal in step (ii), the photodetector detection steps (i), and the original light intensity is believed
The voltage signal of number filtered amplifying circuit carries out low-pass filtering and enhanced processing, and analog conversion circuit again will treated signal
It carries out being sent to MCU after analog-to-digital conversion obtains original infrared light spectrum and ultraviolet spectrum；
Step (iii), MCU carry out signal analysis to the original spectrum received in step (ii), obtain being detected water sample
Water quality parameter.
The tap water quality optical detection apparatus of the present invention is closed using rational pressure-resistant cavity circuit design, pipe-line layout
Reason, integrated level are high, Zhi Neng Kong ﹑ structure Geng Jin Cou ﹑ are easy for installation, are more suitable for the unmanned on-line monitoring demand of large area tap water.
Advantageous effect：A kind of tap water quality optical detection apparatus and detection method of the present invention, compared with prior art,
Beneficial effects of the present invention are as follows：
(1) overall structure is simple, is easily integrated with main water pipeline flow path.
(2) intelligent control, can be used for the detection of many kinds of parameters, data stabilization, accurate；
(3) GPS positioning function is combined, realizes data wireless real-time transmission, is convenient for unified monitoring.Reduce previous mobile inspection
The input of human and material resources, time cost needed for measurement equipment and waste.
(4) power supply mode diversification, adaptation to local conditions meet different use environments.
To sum up, apparatus of the present invention have intelligent control, detection parameters are diversified, simple in structure, power supply mode is diversified
Feature.
Description of the drawings
Fig. 1 is the structural schematic diagram of the tap water quality optical detection apparatus of the present invention；
Fig. 2 is the schematic diagram of the optical detecting module in Fig. 1, wherein
1, shell；2, water inlet；3, the first solenoid valve；4, optical detecting module；5, pressure sensor；6, the second electromagnetism
Valve；7, water outlet；8, main control unit；9, GPS module；10, display unit；11, wireless module；12, power supply system；13, it receives
Module；14, monitoring center；41, UV emitting device；42, infrared launcher；43, photodetector；44, cuvette；45、
Testing liquid.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
The invention discloses a kind of tap water quality optical detection apparatus, including shell, water inlet, the first solenoid valve, light
Learn detection module, pressure sensor, second solenoid valve, water outlet, main control unit, GPS module, display unit, wireless module, confession
Electric system, receiving module, monitoring center etc.；Pipeline is liquid flow path pressure line structure, and liquid enters through water inlet, flows respectively
Mould block ﹑ pressure power is surveyed through the first electric magnetic valve ﹑ light inspection and passes sense device ﹑ second solenoid valves, is discharged from water outlet, is reached real-time online sampling
Purpose.Optical detecting module is equipped with cuvette, is externally provided with UV emitting device, infrared launcher, photodetector, can
It is detected for water quality different parameters by optical principle.It is additionally provided with the pressure sensing that can be in direct contact with testing liquid flow pipe
Device is tested for pipeline pressure.
For the present invention is better described, it is easy to understand technical scheme of the present invention, of the invention is typical but non-limiting
Embodiment is as follows：
As illustrated in fig. 1 and 2, a kind of tap water quality optical detection apparatus, the device is by shell 1, the 2, first electricity of water inlet
Magnet valve 3, optical detecting module 4, pressure sensor 5, second solenoid valve 6, water outlet 7, main control unit 8, GPS module 9, display are single
Member 10, wireless module 11, power supply system 12, receiving module 13, monitoring center 14 form, water inlet 2, the first solenoid valve 3, pressure
Sensor 5, second solenoid valve 6, water outlet 7 are in turn connected to form a liquid pressure resistance flow path channel by pipeline, and main control unit 8 is logical
It crosses signal wire with the first solenoid valve 3, optical detecting module 4, pressure sensor 5, second solenoid valve 6 to be connected, for controlling each electricity
The open/close states of magnet valve and reading calculate each detection data, and detection data are sent to display unit 10 by signal wire
Meanwhile wirelessly sending out data also by wireless module 11, while by the positioning function of GPS module 9, realizing the position of the device
Set positioning, receiving module 13 receives the data that wireless module 11 is sent, and reaches monitoring center, and then realize setting position from
Water water quality detection and monitoring.
In the present embodiment, power supply system power supply 12 can be by the various ways such as solar energy, accumulator, wind generator or alternating current reality
It is existing, provide required power supply for the device.
As shown in Fig. 2, Photoelectric Detection module 4 includes being set between the first solenoid valve and second solenoid valve and preferably clear
Sampling cuvette 44, several monochromatic LED light sources and the ultraviolet hair of the one-to-one photoelectricity of each monochromatic LED light source made of material
Injection device 41, infrared launcher 42, photodetector 43, MCU and various processing of circuit modules etc., cuvette are waited for for storing
Survey liquid 45, photodetector 43 is used to detect corresponding each UV emitting device 41 and infrared launcher 42 is sent out and
It is sent to MCU through the original light intensity signal of detected water sample, and by the original light intensity signal；Period Current Voltage conversion electricity
Road is used to the photo-signal that photodetector 43 detects being converted to voltage signal, then the voltage letter of filtered amplifying circuit
Number carry out low-pass filtering and enhanced processing, signal carries out analog conversion circuit that analog-to-digital conversion obtains is original red by treated again
Outer spectrum and ultraviolet spectrum, and it is sent to MCU.MCU carries out signal analysis to the original spectrum received, is detected
Water quality parameter, the Testing index of water sample, while analysis result is sent to main control unit 8.
Specifically, processing of circuit module includes Current Voltage conversion module, filter amplification circuit, analog conversion circuit and perseverance
Current source circuit, wherein constant-current source circuit is used to provide specific perseverance according to the instruction of MCU for corresponding several monochromatic LED light sources
Galvanic electricity source drives several monochromatic LED light sources to work；Optical detecting module 4 is equipped with see-through detection cuvette 44；And surrounding is set
There are infrared launcher 41, UV emitting device 42 and photodetector 43；It is preferred that UV emitting device 42 and photodetector
43 concentric arrangements, the 90 degree of vertical arrangements therewith of infrared launcher 41.
In the present embodiment, the probe of pressure sensor 5 can be in direct contact with pipeline fluid, can be exported by signal to master control
Unit tests loine pressure after conversion, reaches real-time testing pipeline pressure.
The tap water quality optical detection apparatus of the present invention is in use, detection method includes following detecting step：
Step A, main control unit controls the first solenoid valve and second solenoid valve and opens, the intracavity liquid discharge of cuvette it is same
When be full of new testing liquid；
Step B, second solenoid valve is closed, pressure sensor measures pressure signal and exports to main control unit；
Step C, after turning off the first solenoid valve, optical detecting module detects water quality parameter to main control unit, passes through display
Unit shows test result, while being transmitted to monitoring center by wireless module and receiving module and showing；It is positioned by GPS module
The present position of detection device.
In above-mentioned steps C, optical detecting module includes following detecting step：
Step (i), the constant-current source circuit provide preset constant current according to the instruction of MCU for corresponding monochromatic LED light source
Power supply, driving monochromatic LED light source work, UV emitting device and infrared launcher are sent out through the primary light for being detected water sample
Strong signal；
Original light intensity signal in step (ii), the photodetector detection steps (i), and the original light intensity is believed
The voltage signal of number filtered amplifying circuit carries out low-pass filtering and enhanced processing, and analog conversion circuit again will treated signal
It carries out being sent to MCU after analog-to-digital conversion obtains original infrared light spectrum and ultraviolet spectrum；
Step (iii), MCU carry out signal analysis to the original spectrum received in step (ii), obtain being detected water sample
Water quality parameter.
Apparatus of the present invention have the characteristics that intelligent control, detection parameters are diversified, simple in structure, power supply mode is diversified,
The detection of the parameters such as turbidity, coloration, the TOC of tap water quality can be realized by the optical detection principles such as ultraviolet, infrared, detected
Method high degree of automation, data stabilization, it is accurate, can wireless real-time transmission, be convenient for unified monitoring management, use manpower and material resources sparingly into
This.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of tap water quality optical detection apparatus, it is characterised in that：Including shell (1), it is set on shell (1) and enters water
Mouth (2), water outlet (7) are set to internal the first solenoid valve (3) of shell (1), optical detecting module (4), pressure sensor
(5), second solenoid valve (6) and main control unit (8), the power supply system (12) for being set to hull outside, wherein
The water inlet (2), the first solenoid valve (3), pressure sensor (5), second solenoid valve (6), water outlet (7) pass through pipeline
It is in turn connected to form a liquid pressure resistance flow path channel, optical detecting module (4) is set to the first solenoid valve (3) and second solenoid valve
(6) between, main control unit (8) is equipped with GPS module (9), display unit (10) and wireless module (11), and main control unit (8) passes through
Signal wire is separately connected the first solenoid valve (3), optical detecting module (4), pressure sensor (5) and second solenoid valve (6), power supply
System (12) is used to provide the working power of the internal each circuit module of shell (1)；
The detection device further includes remotely located monitoring center (14), and monitoring center (14) is equipped with for receiving wireless module
(11) receiving module (13) of the data sent.
2. tap water quality optical detection apparatus according to claim 1, it is characterised in that：The Photoelectric Detection module
(4) include MCU, constant-current source circuit, processing of circuit module, photodetector (43), be set to the first solenoid valve (3) and the second electricity
It is cuvette for sampling (44), several monochromatic LED light sources between magnet valve (6), one-to-one with each monochromatic LED light source
Photoelectricity UV emitting device (41) and infrared launcher (42), the cuvette (44) are red for storing testing liquid (45)
Outer emitter (41), UV emitting device (42) and photodetector (43) are set to around cuvette (44), MCU telecommunications
Number connection main control unit (8), processing of circuit module is for sending to after handling the defeated end signal of photodetector (43)
MCU, MCU are connected to each monochromatic LED light source by constant-current source circuit.
The processing of circuit module includes Current Voltage conversion module, filter amplification circuit and analog conversion circuit, photodetection
The output end of device (43) passes sequentially through Current Voltage conversion module, filter amplification circuit and analog conversion circuit and is connected to MCU.
3. tap water quality optical detection apparatus according to claim 2, it is characterised in that：The UV emitting device
(42) it is arranged concentrically with photodetector (43), infrared launcher (41) and UV emitting device (42) vertical are set at 90 degree
It sets.
4. tap water quality optical detection apparatus according to claim 1, it is characterised in that：The power supply system (12) is adopted
With any one of solar power system, accumulator, wind power system, alternating current or more than one combination.
5. using the detection method of any tap water quality optical detection apparatus of claim 2 to 4, which is characterized in that
Including following detecting step：
Step A, the described main control unit (8) controls the first solenoid valve (3) and second solenoid valve (6) is opened, the chamber of cuvette (44)
It is full of new testing liquid while interior liquid discharge；
Step B, second solenoid valve (6) is closed, pressure sensor (5) measures pressure signal and exports to main control unit (8)；
Step C, after turning off the first solenoid valve (3), optical detecting module (4) detects water quality parameter to main control unit (8), passes through
Display unit (10) shows test result, while being transmitted to monitoring center (14) by wireless module (11) and receiving module (13)
Display；Pass through the present position of GPS module (9) locating and detecting device.
6. the detection method of tap water quality optical detection apparatus according to claim 5, it is characterised in that：The step
In C, optical detecting module (4) includes following detecting step：
Step (i), the constant-current source circuit provide preset constant-current supply according to the instruction of MCU for corresponding monochromatic LED light source,
Monochromatic LED light source work, UV emitting device (41) and infrared launcher (42) is driven to send out through the original for being detected water sample
Beginning light intensity signal；
Original light intensity signal in step (ii), the photodetector (43) detection steps (i), and the original light intensity is believed
The voltage signal of number filtered amplifying circuit carries out low-pass filtering and enhanced processing, and analog conversion circuit again will treated signal
It carries out being sent to MCU after analog-to-digital conversion obtains original infrared light spectrum and ultraviolet spectrum；
Step (iii), MCU carry out signal analysis to the original spectrum received in step (ii), obtain the water for being detected water sample
Matter parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412887.3A CN108489922A (en) | 2018-05-03 | 2018-05-03 | A kind of tap water quality optical detection apparatus and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412887.3A CN108489922A (en) | 2018-05-03 | 2018-05-03 | A kind of tap water quality optical detection apparatus and detection method |
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| CN108489922A true CN108489922A (en) | 2018-09-04 |
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| CN201810412887.3A Pending CN108489922A (en) | 2018-05-03 | 2018-05-03 | A kind of tap water quality optical detection apparatus and detection method |
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Cited By (7)
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| CN109490256A (en) * | 2018-09-29 | 2019-03-19 | 武汉丰蓝科技有限公司 | The marine domestic sewage turbidity detection device and detection method for having self-cleaning function |
| CN110618099A (en) * | 2019-08-16 | 2019-12-27 | 深圳一目科技有限公司 | Water quality testing handles chip |
| CN110646355A (en) * | 2019-08-15 | 2020-01-03 | 深圳一目科技有限公司 | Chip for water quality detection |
| CN110967337A (en) * | 2019-12-02 | 2020-04-07 | 重庆凡聚智能科技有限公司 | Drug detection device based on sewer component detection |
| CN111257261A (en) * | 2020-02-26 | 2020-06-09 | Oppo广东移动通信有限公司 | Electronic equipment and method for monitoring water quality by using electronic equipment |
| CN111257262A (en) * | 2020-02-26 | 2020-06-09 | Oppo广东移动通信有限公司 | Electronic equipment and method for monitoring water quality by using electronic equipment |
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