CN220231475U - Water quality detection device - Google Patents
Water quality detection device Download PDFInfo
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- CN220231475U CN220231475U CN202321232874.0U CN202321232874U CN220231475U CN 220231475 U CN220231475 U CN 220231475U CN 202321232874 U CN202321232874 U CN 202321232874U CN 220231475 U CN220231475 U CN 220231475U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000013307 optical fiber Substances 0.000 claims description 57
- 238000012372 quality testing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 9
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 15
- 230000003595 spectral effect Effects 0.000 description 13
- 238000000862 absorption spectrum Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000012490 blank solution Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a water quality detection device, and relates to the technical field of detection equipment. The method specifically comprises the following steps: a holding member for holding a sample to be measured; the incidence assembly is arranged on the accommodating part and is used for emitting annular multi-wave monochromatic light to a sample to be detected in the accommodating part; the receiving component is used for receiving residual light rays absorbed by the sample to be detected in the accommodating part; and the main control unit is used for controlling the switch of the incidence component and outputting a detection result according to the receiving parameter of the receiving component. Aims to realize synchronous detection of different factors in water quality.
Description
Technical Field
The utility model relates to the technical field of detection equipment, in particular to a water quality detection device.
Background
The water is a life source, the quality of the water resource can be reflected by the detection of the water resource, and the problems of the water resource can be fed back in time, so that a reference is provided for improving the quality of water.
The spectroscopic monitoring of the parameters of the water quality by the optical means is a novel water quality monitoring technology, and has the advantages of no need of pretreatment of samples, no need of chemical reagents, short measurement period, high detection speed, low equipment cost, realization of online and in-situ monitoring and the like.
At present, the spectrophotometry-based photoelectric detection technology is widely applied to the field of conventional water quality monitoring, the content of conventional pollutants in a water body can be rapidly and nondestructively detected through the spectral absorption of specific light waves on specific pollutants, and the spectrophotometry-based photoelectric detection technology has very important significance in the application fields of water environment quality evaluation, water environment monitoring, water ecological environment early warning systems, pollutant traceability detection and identification and the like. However, the method can only meet the detection of single factor content, can not realize the simultaneous detection of multiple factors, and greatly limits the application of the method in water quality detection.
Therefore, how to realize synchronous detection of different factors in water quality becomes a technical problem to be solved urgently.
Disclosure of Invention
The utility model mainly aims to provide a water quality detection device which aims to realize synchronous detection of different factors in water quality.
In order to achieve the above object, the present utility model provides a water quality detection apparatus comprising:
a holding member for holding a sample to be measured;
the incidence assembly is arranged on the accommodating part and is used for emitting annular multi-wave monochromatic light to a sample to be detected in the accommodating part;
the receiving component is used for receiving residual light rays absorbed by the sample to be detected in the accommodating part; and
the main control unit is used for controlling the switch of the incidence assembly and outputting a detection result according to the receiving parameters of the receiving assembly.
In one embodiment of the present application, the incident assembly includes:
at least two light sources connected to the main control unit for generating light rays with different wavelengths respectively; and
the first multimode optical fibers are equal to the light sources in number and are respectively coupled with the light sources in a one-to-one correspondence manner, and are used for conducting light generated by the light sources to the sample to be detected.
In an embodiment of the present application, the incident assembly further includes:
the first optical fiber beam combiner is used for collecting light rays of a plurality of first multimode optical fiber output ends into an optical fiber emission main cable, and the output ends of the optical fiber main cable are opposite to the sample to be detected.
In an embodiment of the present application, a wavelength of the light generated by any one of the light sources is between 370nm and 700 nm.
In an embodiment of the present application, the receiving assembly includes:
the at least two second multimode optical fibers are used for collecting residual light rays absorbed by the sample to be detected in the accommodating part; and
and the second optical fiber combiner is used for connecting the output ends of a plurality of second multimode optical fibers into a receiving main cable, and the output end of the receiving main cable is connected with the control unit.
In an embodiment of the present application, the output end of the first multimode optical fiber and the input end of the second multimode optical fiber are directly opposite.
In an embodiment of the present application, the distance between the output end of the first multimode optical fiber and the input end of the second multimode optical fiber is α,2cm > α > 0cm.
By adopting the technical scheme, the to-be-detected sample is accommodated through the accommodating part, then the annular multi-wave monochromatic light is emitted to the to-be-detected sample through the incidence component, finally the residual light absorbed by the to-be-detected sample in the accommodating part is received through the receiving unit, and the detection result is fed back to the main control unit. The type and the concentration of water quality in the sample to be detected in the contained alkali are detected according to the annular multi-wave monochromatic light, and as the light with various different wavelengths can be emitted in batches, the defect that the prior art can only detect one water quality at one time is overcome, the use of the water quality detection device is convenient, the structure is simple, and the implementation is convenient.
Drawings
The utility model will now be described in detail with reference to specific embodiments and accompanying drawings, in which:
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
10. a light source; 20. a first optical fiber combiner; 30. a receiving member; 40. a second optical fiber combiner; 50. a photodetector; 60. and a main control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and examples. It should be understood that the following specific examples are given by way of illustration only and are not intended to be limiting.
As shown in fig. 1, in order to achieve the above object, the present utility model provides a water quality detection apparatus, comprising:
a holder 30 for holding a sample to be measured;
the incidence assembly is arranged on the accommodating part 30 and is used for emitting annular multi-wave monochromatic light to a sample to be detected in the accommodating part 30;
a receiving component, configured to receive the residual light absorbed by the sample to be tested in the accommodating element 30; and
and the main control unit 60 is used for controlling the switch of the incidence component and outputting a detection result according to the receiving parameter of the receiving component.
Specifically, a water quality testing device includes: the receiving member 30, the incident assembly, the receiving assembly, and the control unit.
The storage piece is an open cup body, and an opening in the cup body is used for conveniently placing a sample to be tested into the cup body.
The incident component is connected to the accommodating member 30, and the incident component is connected to the accommodating member 30 by a fixed connection, such as welding, integral molding, or the like. The incident component is connected with the accommodating part 30 in a fixed connection mode, so that the connection strength between the incident component and the accommodating part 30 can be improved, and the stability of the incident component during operation is improved. Of course, the incident assembly and the accommodating member 30 may be detachably connected, such as a clamping connection, a screw connection, etc., according to design requirements. The incident component is detachably connected with the accommodating part 30, so that the incident component is convenient to maintain in the later period when the incident component is abnormal or needs to be replaced. The incident component is used for emitting annular multi-wave monochromatic light to the sample to be measured in the accommodating member 30, and the annular multi-wave monochromatic light in the application refers to a special monochromatic light, and the wavelength of the special monochromatic light can be switched at different frequencies, so that a plurality of different monochromatic lights are formed. It typically uses a ring resonator and a wavelength selective element (e.g., wavelength division multiplexer) to achieve multi-wavelength selection and switching. The application adopts a plurality of light sources 10 annular settings that can send different wavelength to light in proper order at the during operation, simultaneously when next light source 10 is lighted, close last light source 10, thereby realize the light of different wavelength and the quality of water interact in the sample that awaits measuring.
The receiving assembly is connected to the accommodating member 30, and the connection manner between the receiving assembly and the accommodating member 30 is identical to the connection manner between the incident assembly and the accommodating member 30, and has the same advantages, which are not described in detail herein.
The receiving component is used for receiving the residual light rays absorbed by the sample to be tested in the accommodating piece 30.
The control unit is commonly used in the prior art, and is in communication connection with the incident assembly and the receiving assembly. Communication connection in this application refers to the process of connecting two or more communication devices (e.g., computers, handsets, routers, etc.) together through a variety of communication techniques and protocols to achieve data transmission and communication. The communication connection allows devices to send and receive data to and from each other, thereby facilitating communication and sharing of information. The control unit is used for controlling the incident assembly to sequentially generate light rays with different wavelengths to pass through the sample to be detected, at the moment, the corresponding receiving assembly receives residual light rays absorbed by the sample to be detected, the result is fed back to the control unit, and the control unit analyzes the water quality type and concentration in the sample to be detected according to the lambert beer transmission law and the standard absorption spectrum characteristic distribution data spectrum absorption superposition effect. The principle is as follows: the different water qualities can absorb light rays with different wavelengths, whether the water quality matched with the light rays with the specific wavelength exists in the sample to be detected can be judged through the attenuation parameter when the light rays with the specific wavelength pass through the sample to be detected, and meanwhile, the concentration of the water quality in the sample to be detected can be calculated through the attenuation proportion of the attenuation parameter. Since the above calculation process is the prior art, it is not described in detail herein.
By adopting the technical scheme, the to-be-detected sample is accommodated by the accommodating part 30, then the annular multi-wave monochromatic light is emitted to the to-be-detected sample by the incidence component, finally the residual light absorbed by the to-be-detected sample in the accommodating part 30 is received by the receiving unit, and the detection result is fed back to the main control unit 60. The type and the concentration of water quality in the sample to be detected in the contained alkali are detected according to the annular multi-wave monochromatic light, and as the light with various different wavelengths can be emitted in batches, the defect that the prior art can only detect one water quality at one time is overcome, the use of the water quality detection device is convenient, the structure is simple, and the implementation is convenient.
In one embodiment of the present application, the incident assembly includes:
at least two light sources 10 connected to the main control unit 60 for generating light rays with different wavelengths, respectively; and
the first multimode fibers are equal to the light sources 10 in number, are coupled with the light sources 10 in a one-to-one correspondence manner, and are used for conducting light generated by the light sources 10 to the sample to be detected.
In particular, the incident assembly includes at least two light sources 10 and a first multimode optical fiber.
At least two in the present application means two or more, and two light sources 10 are exemplified.
The wavelengths of the two light sources 10 are not equal, the two light sources 10 are connected to the main control unit 60, the two light sources 10 are connected with the main control unit 60 in a communication mode, and the main control unit 60 controls the on or off of the two light sources 10. And ensures that only one light source 10 of the two light sources 10 is in operation. The two light sources 10 are both LED light sources 10, and the LED light sources 10 have the advantages of high efficiency, energy conservation, long service life, space saving, safety, environmental protection, rich colors and the like. The color of the light source 10 is related to the wavelength of the light source 10, and the color-rich LED lamp can generate light rays with various different wavelengths, so that the water quality of a sample to be detected can be conveniently detected.
The number of the first multimode fibers is equal to that of the light sources 10, and the first multimode fibers are commonly used in the prior art, and are not described in detail herein, and the first multimode fibers are connected with the light sources 10 in a one-to-one correspondence manner, so as to conduct light generated by the light sources 10 to the sample to be tested. The first multimode optical fiber is coupled to each of the light sources 10.
By adopting the technical scheme, the light generated by the light source 10 is transmitted to the sample to be detected through the first multimode optical fiber, so that the interference of natural light on the detection result can be effectively reduced.
In an embodiment of the present application, the incident assembly further includes:
the first optical fiber combiner 20 is configured to combine the light beams from the output ends of the first multimode optical fibers into an optical fiber emission main cable, where the output ends of the optical fiber main cable face the sample to be measured.
Specifically, the incident assembly further includes a first optical fiber combiner 20, where the first optical fiber combiner 20 is connected to an end of the optical fiber far away from the light source 10, and is mainly used for combining light rays of the output end of the first multimode optical fiber into an optical fiber transmitting main cable, where the diameter of the transmitting main cable is greater than that of the first multimode optical fiber, and then the output end of the optical fiber main cable is right opposite to the sample to be tested.
By adopting the above connection mode, the light rays of the light sources 10 can be converged together through the first beam combiner, so that the utilization rate of the light rays is improved, and the intensity of the light rays emitted by the emission component is improved. Meanwhile, the complexity of the incident component is reduced, and the reliability of the incident component in operation is improved.
In an embodiment of the present application, the wavelength of the light generated by any one of the light sources 10 is between 370nm and 700 nm.
In an embodiment of the present application, the receiving assembly includes:
at least two second multimode optical fibers for collecting the residual light absorbed by the sample to be measured in the accommodating member 30; and
and the second optical fiber combiner 40 is configured to connect output ends of a plurality of second multimode optical fibers to a receiving main cable, where the output ends of the receiving main cable are connected to the control unit.
Specifically, the receiving component includes at least two second multimode optical fibers, which are described herein as examples. The two second multimode optical fibers are used for collecting residual light rays absorbed by the sample to be detected in the accommodating part 30, one ends of the two multimode optical fibers, which are far away from the accommodating part 30, are connected with the second optical fiber beam combiner 40, and the light rays in the two second multimode optical fibers are converged through the second optical fiber beam combiner 40, so that the utilization rate of the light rays by the receiving assembly can be improved, and the sensitivity and the detection precision of the receiving assembly can be improved.
In an embodiment of the present application, the output end of the first multimode optical fiber and the input end of the second multimode optical fiber are directly opposite.
Specifically, the output end of the first multimode optical fiber is opposite to the output end of the second multimode optical fiber, so that the optical signal can be stably transmitted, the loss of the optical signal in the transmission process is reduced, the design of the whole optical system is simplified, and the later maintenance is convenient.
In an embodiment of the present application, the distance between the output end of the first multimode optical fiber and the input end of the second multimode optical fiber is α,2cm > α > 0cm.
By adopting the technical scheme, the distance between the output end of the first multimode optical fiber and the input end of the second multimode optical fiber is within 0-2 cm, so that the loss of light can be effectively reduced, the influence of natural light on a detection result is reduced, and the device is simple in structure and convenient to implement.
The application also discloses a water quality detection method, which comprises the following steps:
acquiring standard absorption spectrum characteristic distribution parameters of water quality factors and transmission light intensity signals of a sample to be detected in different light wave bands, which are acquired by adopting the water quality detection device;
and acquiring spectral absorption variation parameters in the sample to be measured of the corresponding light according to the transmitted light intensity signals of the different light wave bands, and indicating that impurities corresponding to the light do not exist in the current sample to be measured when the spectral absorption variation parameters of the corresponding light in the sample to be measured do not meet the standard absorption spectral characteristic distribution parameters of the light in the water quality factors.
Specifically, a water quality detection method comprises the following steps of;
and acquiring standard absorption spectrum characteristic distribution parameters of the water quality factors, wherein the standard absorption spectrum characteristic distribution parameters comprise conventional water quality multi-factor absorption spectrum parameters to be detected. The containing piece 30 is put into the sample to be detected, the sample to be detected is filled in the containing piece 30, at this time, the LED light sources 10 in the water quality detection device are respectively lightened, the containing piece 30 is irradiated through the incidence component, and the light signals are transmitted to the photoelectric detector 50 through the receiving component arranged on the containing piece 30, so that the transmitted light intensity signals of the sample to be detected in different light wave bands are obtained.
And acquiring spectral absorption variation parameters in the sample to be measured corresponding to the light according to the transmitted light intensity signals of different light wave bands, wherein the variation parameters are expressed as light attenuation. And when the spectral absorption variation of the corresponding light in the sample to be detected does not meet the standard absorption spectral characteristic distribution parameter of the light in the water quality factor, indicating that no impurity corresponding to the light exists in the sample to be detected. If the spectral absorption variation of the corresponding light in the sample to be detected meets the standard absorption spectral characteristic distribution parameter of the light in the water quality factor, the impurity corresponding to the light exists in the sample to be detected. The analysis process of the method is lamberbi transmission law inversion and standard absorption spectrum characteristic distribution data spectrum absorption superposition effect analysis, and the process is the prior art and is not described in detail herein.
By adopting the technical scheme, the flow is simple and the implementation is convenient.
In an embodiment of the present application, obtaining a standard absorption spectrum characteristic distribution interval of a water quality factor includes the following steps:
s1: preparing a water quality factor standard concentration solution to be detected;
s2: preparing pure water blank solution to be detected;
s3: acquiring spectral absorption distribution parameters of the water quality factors in the standard concentration solution and the pure water blank solution respectively by a spectrophotometer;
s4: and calculating the difference value between the spectral absorption distribution parameter in the pure water blank solution and the spectral absorption distribution parameter in the standard concentration solution to obtain the spectral absorption distribution parameter of the unit concentration of the water quality factor.
By adopting the technical scheme, the standard absorption spectrum characteristic distribution interval of the water quality factors is obtained through the water quality factor solution with standard concentration and the pure water blank solution, so that the variation and the interference of the sample can be reduced, and the accuracy and the precision of measurement can be improved. Meanwhile, the repeatability is good, the operation is convenient for multiple times, and meanwhile, the operation is simpler, economical and practical.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (6)
1. A water quality testing device, comprising:
a holding member for holding a sample to be measured;
the incidence assembly is arranged on the accommodating part and is used for emitting annular multi-wave monochromatic light to a sample to be detected in the accommodating part;
the receiving component is used for receiving residual light rays absorbed by the sample to be detected in the accommodating part; and
the main control unit is used for controlling the switch of the incidence assembly and outputting a detection result according to the receiving parameters of the receiving assembly; the incidence assembly comprises:
at least two light sources connected to the main control unit for generating light rays with different wavelengths respectively; and
the first multimode optical fibers are equal to the light sources in number and are respectively coupled with the light sources in a one-to-one correspondence manner, and are used for conducting light generated by the light sources to the sample to be detected.
2. The water quality testing device of claim 1, wherein the incidence assembly further comprises:
the first optical fiber beam combiner is used for collecting light rays of a plurality of first multimode optical fiber output ends into an optical fiber emission main cable, and the output ends of the optical fiber main cable are opposite to the sample to be detected.
3. The water quality testing device of claim 2, wherein the wavelength of the light generated by any one of the light sources is between 370nm and 700 nm.
4. The water quality testing device of claim 1, wherein the receiving assembly comprises:
the at least two second multimode optical fibers are used for collecting residual light rays absorbed by the sample to be detected in the accommodating part; and
and the second optical fiber combiner is used for connecting the output ends of a plurality of second multimode optical fibers into a receiving main cable, and the output end of the receiving main cable is connected with the control unit.
5. The water quality testing device of claim 4, wherein the output end of the first multimode optical fiber and the input end of the second multimode optical fiber are directly opposite.
6. The water quality testing apparatus of claim 5, wherein the distance between the output end of the first multimode optical fiber and the input end of the second multimode optical fiber is α,2cm > α > 0cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232874.0U CN220231475U (en) | 2023-05-17 | 2023-05-17 | Water quality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321232874.0U CN220231475U (en) | 2023-05-17 | 2023-05-17 | Water quality detection device |
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| Publication Number | Publication Date |
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| CN220231475U true CN220231475U (en) | 2023-12-22 |
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| CN202321232874.0U Active CN220231475U (en) | 2023-05-17 | 2023-05-17 | Water quality detection device |
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| CN (1) | CN220231475U (en) |
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