CN116067930A - Non-contact chlorophyll monitoring device - Google Patents

Non-contact chlorophyll monitoring device Download PDF

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Publication number
CN116067930A
CN116067930A CN202310062528.0A CN202310062528A CN116067930A CN 116067930 A CN116067930 A CN 116067930A CN 202310062528 A CN202310062528 A CN 202310062528A CN 116067930 A CN116067930 A CN 116067930A
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CN
China
Prior art keywords
light source
detector
ultraviolet light
chlorophyll
monitoring device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310062528.0A
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Chinese (zh)
Inventor
潘冬宁
王斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Photonic Integration Wenzhou Innovation Research Institute
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Photonic Integration Wenzhou Innovation Research Institute
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Filing date
Publication date
Application filed by Photonic Integration Wenzhou Innovation Research Institute filed Critical Photonic Integration Wenzhou Innovation Research Institute
Priority to CN202310062528.0A priority Critical patent/CN116067930A/en
Publication of CN116067930A publication Critical patent/CN116067930A/en
Pending legal-status Critical Current

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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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6486—Measuring fluorescence of biological material, e.g. DNA, RNA, cells
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G01N2021/6463—Optics
    • G01N2021/6471—Special filters, filter wheel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Abstract

The invention discloses a non-contact chlorophyll monitoring device, which comprises an ultraviolet light source component and a detection component which is positioned at the same level as the ultraviolet light source component; the ultraviolet light source component is used for emitting ultraviolet light, and the ultraviolet light irradiates on the water body to be detected; the detection assembly comprises a detector lens and a detector which are coaxially arranged in sequence; the detector lens is used for converging fluorescence generated by the plant containing chlorophyll in the water body to be detected under the irradiation of ultraviolet light on the detector; the detector is used for receiving the fluorescence and generating a corresponding electric signal according to the light intensity of the fluorescence. The monitoring device provided by the invention utilizes the relation between the fluorescence intensity and the chlorophyll content to determine the quantity of algae and other plants in the water body to be detected, so that the monitoring device does not need to be in direct contact with the water body, cannot be corroded by the water body, has long service life, and does not have the problem that the sensor in contact with the water body in the prior art is corroded to pollute the water body.

Description

Non-contact chlorophyll monitoring device
Technical Field
The invention discloses a non-contact chlorophyll monitoring device, and belongs to the technical field of environmental protection.
Background
Eutrophication of water body refers to the phenomenon that under the influence of human activities, nutrient substances such as nitrogen, phosphorus and the like required by organisms enter slow-flowing water bodies such as lakes, rivers, lakes, gulfs and the like in a large amount, algae and other plankton are rapidly propagated, the dissolved oxygen amount of the water body is reduced, the water quality is deteriorated, and fishes and other organisms die in a large amount.
Eutrophication of water bodies such as rivers, lakes, offshore and the like can cause disasters such as water bloom, red tide and the like. The growth of phytoplankton, algae and the like is monitored in time, and effective treatment measures are taken, so that the occurrence of disasters such as water bloom, red tide and the like can be avoided.
Algae and other plants contain abundant chlorophyll, and disasters such as water bloom, red tide and the like can be early warned in advance by monitoring the concentration of chlorophyll in water. In the prior art, the contact type sensor is used for monitoring chlorophyll, namely, the sensor is required to be contacted with the water body for chlorophyll detection, so that the sensor is easy to corrode, the service life is short, and certain pollution to the water body exists after the sensor is damaged.
Disclosure of Invention
An object of the application is to provide a non-contact chlorophyll monitoring device to solve prior art and adopt contact sensor to monitor chlorophyll, the sensor that exists is easily corroded, technical problem that life-span is short.
The invention provides a non-contact chlorophyll monitoring device, which comprises an ultraviolet light source component and a detection component which is positioned at the same horizontal height as the ultraviolet light source component;
the ultraviolet light source component is used for emitting ultraviolet light, and the ultraviolet light irradiates on the water body to be detected;
the detection assembly comprises a detector lens and a detector which are coaxially arranged in sequence;
the detector lens is used for converging fluorescence generated by the plant containing chlorophyll in the water body to be detected under the irradiation of ultraviolet light on the detector;
the detector is used for receiving the fluorescence and generating a corresponding electric signal according to the light intensity of the fluorescence.
Preferably, the detector assembly further comprises a first filter;
the first optical filter is arranged on the fluorescent receiving surface of the detector and is used for filtering stray light in the fluorescent light.
Preferably, the ultraviolet light source assembly comprises a light source module and a light source lens coaxially arranged with the light source module;
the light source module is used for generating ultraviolet light;
the light source lens is used for collimating the ultraviolet light, and the collimated ultraviolet light irradiates on a water body to be detected;
the light source lens is parallel to the optical axis of the detector lens.
Preferably, the light source module includes a light source and a second filter;
the second optical filter is arranged on the light emergent surface of the light source and is used for enabling the light emergent through the second optical filter to be ultraviolet light.
Preferably, the control main board is connected with the detection assembly;
the control main board is used for determining fluorescence intensity information according to the electric signals and determining concentration information of chlorophyll in the water body to be detected according to the fluorescence intensity information.
Preferably, the remote terminal is connected with the control main board in a wireless mode.
Preferably, the detector is a photodiode.
Preferably, the material of the detector lens is K9 glass or quartz.
Preferably, the material of the light source lens is K9 glass or quartz.
Compared with the prior art, the non-contact chlorophyll monitoring device has the following beneficial effects:
the non-contact chlorophyll monitoring device provided by the invention utilizes the relationship between the fluorescence intensity and the chlorophyll content to determine the quantity of algae and other plants in the water body to be detected, so that the device does not need to be in direct contact with the water body, cannot be corroded by the water body, has long service life, and does not have the problem that the sensor in contact with the water body in the prior art is corroded to pollute the water body.
Drawings
Fig. 1 is a schematic structural diagram of a non-contact chlorophyll monitoring device according to the present invention.
In the figure, 1 is a control main board; 2 is a bottom plate; 3 is a light source; 4 is a light source plate; 5 is a second filter; 6 is a light source lens; 7 is a light source lens barrel; 8 is a box body; 9 is a detector lens; 10 is a detector lens barrel; 11 is a detector board; 12 is a first filter; 13 is a detector.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The invention provides a non-contact chlorophyll monitoring device, which is based on the principle of ultraviolet light-induced fluorescence: namely, when the chlorophyll is irradiated by ultraviolet light, fluorescence is excited, the fluorescence intensity is in direct proportion to the chlorophyll content, and the concentration of the chlorophyll can be judged by monitoring the fluorescence intensity.
The non-contact chlorophyll monitoring device comprises an ultraviolet light source component and a detection component which is positioned at the same horizontal height as the ultraviolet light source component;
the ultraviolet light source component is used for emitting ultraviolet light, and the ultraviolet light irradiates on the water body to be detected;
the detection assembly comprises a detector lens and a detector which are coaxially arranged in sequence;
the detector lens is used for converging fluorescence generated by chlorophyll-containing plants in the water body to be detected under ultraviolet irradiation on the detector, and the detector lens is made of K9 glass or quartz;
the detector is used for receiving the fluorescence and generating a corresponding electric signal according to the light intensity of the fluorescence, and the detector in the embodiment of the invention is preferably a photodiode.
The non-contact chlorophyll monitoring device provided by the invention utilizes the relationship between the fluorescence intensity and the chlorophyll content to determine the quantity of algae and other plants in the water body to be detected, so that the device does not need to be in direct contact with the water body, cannot be corroded by the water body, has long service life, and does not have the problem that the sensor in contact with the water body in the prior art is corroded to pollute the water body.
The detector lens in the embodiment of the invention is made of K9 glass or quartz, so that the transmittance of fluorescence can be ensured, and the loss of fluorescence can be avoided.
In order to further ensure the accuracy of the result obtained by the detector, the detector assembly of the invention further comprises a first optical filter;
the first optical filter is arranged on the fluorescent receiving surface of the detector and is used for filtering stray light in fluorescence, such as ultraviolet light reflected by a water body.
The ultraviolet light source component in the embodiment of the invention comprises a light source module and a light source lens coaxially arranged with the light source module;
the light source module is used for generating ultraviolet light;
the light source lens is used for collimating ultraviolet light, the collimated ultraviolet light irradiates on a water body to be measured, and the light source lens is made of K9 glass or quartz;
the light source lens is parallel to the optical axis of the detector lens.
In the embodiment of the invention, after the ultraviolet light is collimated, the light can be concentrated on the water to be detected, which is opposite to the light source lens, so that a large amount of fluorescence generated by chlorophyll plants in the water to be detected is excited, the light source lens is limited to be parallel to the optical axis of the detector lens, the detector is ensured to receive enough fluorescence, and the accuracy of the monitoring result is improved. Meanwhile, the light source lens is made of K9 glass or quartz, the ultraviolet light transmittance is high, and the ultraviolet light loss is avoided.
The light source module comprises a light source and a second optical filter;
the second optical filter is arranged on the light emitting surface of the light source and is used for enabling the light emitted by the second optical filter to be ultraviolet light.
The light source in the embodiment of the invention can be an ultraviolet light source, such as an ultraviolet laser or an ultraviolet LED, and the like, and also can be a common light source; the second optical filter is used for filtering non-ultraviolet light (such as visible blue-violet light) emitted by the light source, so that accuracy of a subsequent monitoring result is guaranteed.
In order to improve convenience, the device of the embodiment of the invention further comprises a control main board connected with the detection assembly;
the control main board is used for determining fluorescence intensity information according to the electric signals and determining concentration information of chlorophyll in the water body to be detected according to the fluorescence intensity information.
In the embodiment of the invention, the one-to-one correspondence between the electric signal, the fluorescence intensity information and the chlorophyll concentration information is known, and the control main board is only required to adopt the existing main board.
In order to intuitively display the concentration information of chlorophyll in the water body to be measured, the control main board is connected with the data center or the remote terminal in the embodiment of the invention so as to acquire the concentration information of chlorophyll in the water body to be measured at any time according to the needs, and further, effective treatment measures are taken, thereby avoiding disasters such as water bloom, red tide and the like.
In the embodiment of the invention, the control main board is connected with the data center or the remote terminal through communication interfaces such as RS485, network ports and the like.
The device of the invention will be described in more specific examples.
As shown in fig. 1, the device of the present invention comprises a box 8, an ultraviolet light source assembly arranged in the box 8, and a detection assembly positioned at the same level as the ultraviolet light source assembly, wherein a light source lens 6 in the ultraviolet light source assembly and a detector lens 9 in the detection assembly are arranged on the same side surface of the box 8.
The ultraviolet light source assembly comprises a light source plate 4, the light source 3 is arranged on the light source plate 4, and the light source plate 4 can provide power and drive for the light source 3. The light source 3 is an ultraviolet light source, and may be an ultraviolet laser, an ultraviolet LED, or the like. The light source 3 is covered with a second filter 5 for filtering out non-ultraviolet light (such as visible blue-violet light) emitted by the light source 3. The light source lens 6 is located at the front end of the second optical filter 5, and the optical axis of the light source lens passes through the geometric center of the light source 3 and is used for collimating ultraviolet light emitted by the light source 3, and the ultraviolet light transmittance is high, and the ultraviolet light is generally made of quartz and other materials. The light source barrel 7 is used for fixing the light source lens 6, the light source plate 4, and the like, and is fixed on the side wall of the case 8 or the bottom plate 2. The light source board 4 is connected with the control main board 1 and is controlled by the control main board 1.
The detection assembly comprises a detector lens 9, a first optical filter 12 and a detector 13 which are sequentially arranged along a fluorescence incidence light path. The detector 13 is a photodiode, and is used for receiving fluorescence generated by exciting chlorophyll through ultraviolet light. The detector 13 is located on a detector board 11. The detector board 11 provides power and drive for the detector 13. The detector 13 is covered with a first filter 12 for filtering out light spectrum other than fluorescence (e.g. ultraviolet light emitted by an ultraviolet light source). The detector lens 9 is located at the front end of the first optical filter 12, and its optical axis passes through the geometric center of the detector 13, so as to collect fluorescence, typically K9 glass or quartz material. The detector lens barrel 10 is used for fixing a detector lens 9, a detector plate 11, and the like, and is fixed to a side wall of the case 8 or the bottom plate 2. The detector lens 9 is parallel to the optical axis of the light source lens 6 and is located at the same height. The detector board 11 is connected with the control main board 1, and transmits the electric signal to the control main board 1 for processing. The control main board 1 receives the analog electric signal, converts the analog electric signal into a digital signal, performs data processing to obtain chlorophyll fluorescence intensity information, and further obtains chlorophyll concentration information. The control main board 1 is provided with communication interfaces such as RS485, network ports and the like, and chlorophyll concentration information can be transmitted to a data center or a user terminal through the interfaces.
When the device is used, the device is arranged at a distance of 1.5-2.5m above water bodies such as rivers, lakes and the like, the lens end is right against the water body to be detected, after the device is electrified, the ultraviolet light source component can automatically emit ultraviolet light, the detection component automatically collects excited fluorescence, and the main board 1 is controlled to transmit chlorophyll concentration information obtained through treatment to the user terminal.
The non-contact chlorophyll monitoring device provided by the invention utilizes the relationship between the fluorescence intensity and the chlorophyll content to determine the quantity of algae and other plants in the water body to be detected, so that the device does not need to be in direct contact with the water body, cannot be corroded by the water body, has long service life, and does not have the problem that the sensor in contact with the water body in the prior art is corroded to pollute the water body.
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.

Claims (9)

1. The non-contact chlorophyll monitoring device is characterized by comprising an ultraviolet light source assembly and a detection assembly which is positioned at the same level as the ultraviolet light source assembly;
the ultraviolet light source component is used for emitting ultraviolet light, and the ultraviolet light irradiates on the water body to be detected;
the detection assembly comprises a detector lens and a detector which are coaxially arranged in sequence;
the detector lens is used for converging fluorescence generated by the plant containing chlorophyll in the water body to be detected under the irradiation of ultraviolet light on the detector;
the detector is used for receiving the fluorescence and generating a corresponding electric signal according to the light intensity of the fluorescence.
2. The non-contact chlorophyll monitoring device of claim 1, wherein said detector assembly further includes a first filter;
the first optical filter is arranged on the fluorescent receiving surface of the detector and is used for filtering stray light in the fluorescent light.
3. The non-contact chlorophyll monitoring device of claim 1, wherein said ultraviolet light source assembly includes a light source module and a light source lens coaxially disposed with said light source module;
the light source module is used for generating ultraviolet light;
the light source lens is used for collimating the ultraviolet light, and the collimated ultraviolet light irradiates on a water body to be detected;
the light source lens is parallel to the optical axis of the detector lens.
4. A non-contact chlorophyll monitoring device as in claim 3, wherein the light source module includes a light source and a second filter;
the second optical filter is arranged on the light emergent surface of the light source and is used for enabling the light emergent through the second optical filter to be ultraviolet light.
5. A non-contact chlorophyll monitoring device according to any one of claims 1-4, further comprising a control motherboard connected to said detection assembly;
the control main board is used for determining fluorescence intensity information according to the electric signals and determining concentration information of chlorophyll in the water body to be detected according to the fluorescence intensity information.
6. A non-contact chlorophyll monitoring device as in claim 5, further comprising a remote terminal wirelessly connected to said control motherboard.
7. A non-contact chlorophyll monitoring device as in claim 1, wherein said detector is a photodiode.
8. The non-contact chlorophyll monitoring device as in claim 1, wherein the detector lens is made of K9 glass or quartz.
9. A non-contact chlorophyll monitoring device as claimed in claim 3, wherein said light source lens is made of K9 glass or quartz.
CN202310062528.0A 2023-01-17 2023-01-17 Non-contact chlorophyll monitoring device Pending CN116067930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310062528.0A CN116067930A (en) 2023-01-17 2023-01-17 Non-contact chlorophyll monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310062528.0A CN116067930A (en) 2023-01-17 2023-01-17 Non-contact chlorophyll monitoring device

Publications (1)

Publication Number Publication Date
CN116067930A true CN116067930A (en) 2023-05-05

Family

ID=86171169

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310062528.0A Pending CN116067930A (en) 2023-01-17 2023-01-17 Non-contact chlorophyll monitoring device

Country Status (1)

Country Link
CN (1) CN116067930A (en)

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