CN113730983A - Water pollution early warning system based on plankton - Google Patents

Water pollution early warning system based on plankton Download PDF

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Publication number
CN113730983A
CN113730983A CN202111076243.XA CN202111076243A CN113730983A CN 113730983 A CN113730983 A CN 113730983A CN 202111076243 A CN202111076243 A CN 202111076243A CN 113730983 A CN113730983 A CN 113730983A
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water source
delta
filter screen
water
gray value
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CN202111076243.XA
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Chinese (zh)
Inventor
柳大军
赵婉清
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Xinzhou Teachers University
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Xinzhou Teachers University
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Priority to CN202111076243.XA priority Critical patent/CN113730983A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/603—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by flow measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/605—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by level measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • B01D35/1435—Filter condition indicators with alarm means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention provides a plankton-based water pollution early warning system, which comprises: the water storage tank is used for storing a water source, and the conveying pipeline is connected with a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve in series. Through setting up the control unit, the storage water tank, first filter unit, second filter unit and third filter unit, carry the water source of gathering to storing in the storage water tank, and through first filter unit, second filter unit and third filter unit filter the water source in the storage water tank respectively, and weigh the weight of the plankton after filtering through the weighing unit, and simultaneously, carry out image acquisition to the plankton after filtering through the image acquisition unit, thereby judge whether the water source is polluted according to the data of gathering, and output alarm instruction is in order to carry out the water pollution early warning, can carry out the early warning to the water source pollution according to the change of the plankton in the water source is timely effectively.

Description

Water pollution early warning system based on plankton
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a plankton-based water pollution early warning system.
Background
At present, with the rapid development of social economy, the water body environment faces the dilemma of pollution aggravation, the existing water pollution treatment comprises the evaluation of the change of the environment by utilizing biological reaction, the purpose is to hopefully detect the harmful substances at the fastest speed in a factory or a site before the harmful substances reach a receiving system so as to avoid destroying the ecological balance of the receiving system or detect out potential toxicity, but a common biological detection device judges through the behavior of organisms, the misjudgment is easily caused due to the natural activity of the organisms, and the problem of how to carry out water pollution early warning according to the content of plankton in the water body is urgently needed to be solved.
Disclosure of Invention
In view of this, the invention provides a plankton-based water pollution early warning system, which aims to solve the problem of early warning of water pollution according to the change of planktons in water.
In one aspect, the present invention provides a plankton-based water pollution early warning system, comprising: the water source filtering device comprises a control unit, a water storage tank, a first filtering unit, a second filtering unit and a third filtering unit, wherein the water storage tank is used for storing a water source, a liquid level sensor is arranged in the water storage tank, a conveying pipeline is arranged at the water outlet end of the lower portion of the water storage tank, a flow meter is arranged on the conveying pipeline, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve are connected in series with the conveying pipeline, the first electromagnetic valve is connected with the first pipeline to convey the water source into the first filtering unit, the second electromagnetic valve is connected with the second pipeline to convey the water source into the second filtering unit, and the third electromagnetic valve is connected with the third pipeline to convey the water source into the third filtering unit;
the first filtering unit comprises a first filter screen, a first weighing unit and a first cylinder, the first weighing unit is arranged at the upper end of the first cylinder, the first filter screen is inserted into the first cylinder, the edge of the first filter screen is overlapped on the first weighing unit, the first filter screen is weighed by the first weighing unit, the first filter screen is positioned right below the first pipeline, a first image acquisition unit is arranged on the first pipeline, and the first image acquisition unit is used for acquiring image information of the first filter screen;
the second filtering unit comprises a second filter screen, a second weighing unit and a second cylinder, the second weighing unit is arranged at the upper end of the second cylinder, the second filter screen is inserted into the second cylinder, the edge of the second filter screen is overlapped on the second weighing unit, the second filter screen is weighed by the second weighing unit and is positioned right below the second pipeline, a second image acquisition unit is arranged on the second pipeline, and the second image acquisition unit is used for acquiring image information of the second filter screen;
the third filtering unit comprises a third filter screen, a third weighing unit and a third cylinder, the third weighing unit is arranged at the upper end of the third cylinder, the third filter screen is inserted into the third cylinder, the edge of the third filter screen is arranged on the third weighing unit in a lap mode, the third filter screen is weighed through the third weighing unit, the third filter screen is located right below the third pipeline, a third image acquisition unit is arranged on the third pipeline, and the third image acquisition unit is used for acquiring image information of the third filter screen; the mesh number of the first filter screen is smaller than that of the second filter screen, and the mesh number of the second filter screen is smaller than that of the third filter screen;
the control unit comprises a processing module, a control module, a collection module and an alarm module, wherein the collection module is respectively electrically connected with the liquid level sensor, the flowmeter, the first image collection unit, the second image collection unit, the third image collection unit, the first weighing unit, the second weighing unit and the third weighing unit to collect data, the control module is electrically connected with the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to control the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, the processing module is used for acquiring the data collected by the collection module, judging whether a water source is polluted according to the acquired data and outputting an alarm instruction, and the alarm module is used for executing the alarm instruction.
Further, the processing module is further configured to determine a real-time liquid level height Δ L in the water storage tank from the data acquired by the acquisition module, determine an amount of water injected into the first filtering unit according to the real-time liquid level height Δ L, and record the amount of water as a first water source injection amount L1, after injecting a first water source injection amount L1 into the first filtering unit, obtain a first mass Δ W1 of plankton on the first filter screen, acquire image information of the plankton on the first filter screen by using the first image acquisition unit, and acquire a first average gray value H1 from the image information;
the processing module is further used for setting a standard planktonic biomass W0 and a standard average gray-scale value H0, and judging whether the water source is polluted according to the first mass delta W1 and the first average gray-scale value H1:
when the delta W1 is not less than W0 and the H1 is not less than H0, judging that the water source is not polluted;
when the delta W1 is more than W0 and the H1 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the delta W1 is not less than W0 and H1 is more than H0, or when the delta W1 is more than W0 and H1 is not more than H0, the water source is judged to be possibly polluted.
Further, the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the second filtering unit, which is recorded as a second water source injection amount L2, obtain a second mass Δ W2 of plankton on the second filter screen after the second water source injection amount L2 is injected into the second filtering unit, acquire image information of the plankton on the second filter screen through the second image acquisition unit, and acquire a second average gray value H2 from the image information; the processing module is also used for setting a standard planktonic biomass difference A0;
the processing module is also used for judging whether the water source is polluted again according to the difference value between the first quality delta W1 and the second quality delta W2 and the second average gray value H2 when the delta W1 is not more than W0, the H1 is more than H0 or the delta W1 is more than W0, the H1 is not more than H0, and the water source is judged to be possibly polluted:
when the absolute delta W2-delta W1 is less than or equal to A0 and the H2 is less than or equal to H0, judging that the water source is not polluted;
when the absolute value of delta W2-delta W1 is more than A0 and H2 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the absolute value of delta W2-delta W1 is less than or equal to A0 and H2 is more than H0, or when the absolute value of delta W2-delta W1 is more than A0 and H2 is less than or equal to H0, judging that the water source is possibly polluted.
Further, the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the third filtering unit, which is recorded as a third water source injection amount L3, obtain a third mass Δ W3 of plankton on the third filter screen after injecting a third water source injection amount L3 into the third filtering unit, acquire image information of the plankton on the third filter screen through the third image acquisition unit, and acquire a third average gray value H3 from the image information; the processing module is also used for setting a ratio B0 of standard quality to gray value;
the processing module is further used for judging whether the water source is polluted again according to the ratio between the third water source injection quantity L3 and the third quality delta W3 and the standard quality-to-gray value ratio B0:
when L3/[ delta ] W3 is larger than B0, judging that the water source is polluted, and alarming through the alarm module;
and when the L3/. DELTA.W 3 is less than or equal to B0, judging that the water source is not polluted.
Further, the processing module is further configured to, when setting the standard quality-to-gray-value ratio B0, determine according to the following equation: b0 { (L1/. DELTA.w 1+ L2/. DELTA.w 2+ L1/. DELTA.w 2+ L2/. DELTA.w 1+)/4+ [ (L1+ L2)/(. DELTA.w 1 +. DELTA.w 2) + (. DELTA.l 1-L2. DELTA.)/(. DELTA.w 1-. DELTA.w 2. DELTA.) ]/2 }/2.
Further, the processing module is further configured to set a first preset liquid level height L1, a second preset liquid level height L2, a third preset liquid level height L3, and a fourth preset liquid level height L4, where L1 < L2 < L3 < L4; the processing module is also used for setting a first preset water source injection amount L01, a second preset water source injection amount L02, a third preset water source injection amount L03 and a fourth preset water source injection amount L04, wherein L01 is more than L02 and more than L03 and more than L04;
the processing module is also used for determining the water injection amount when water is injected into the first filtering unit, the second filtering unit and the third filtering unit according to the relation between the real-time liquid level height Delta L in the water storage tank and each preset liquid level height:
when the delta L is less than or equal to L1, taking the first preset water source injection amount L01 as the first water source injection amount L1, the second water source injection amount L2 and the third water source injection amount L3;
when the delta L is more than or equal to L1 and less than L2, taking the second preset water source injection quantity L02 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
when the delta L is more than or equal to L2 and less than L3, taking the third preset water source injection quantity L03 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
and when the delta L is more than or equal to L3 and less than L4, taking the fourth preset water source injection quantity L04 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3.
Further, the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen or the third filter screen, perform gray processing on the image frame, acquire a gray value of each pixel block of the image frame, and calculate an average gray value Ha of all the pixel blocks after determining the gray values of all the pixel blocks;
the processing module is also used for setting a first preset water injection amount M1, a second preset water injection amount M2, a third preset water injection amount M3 and a fourth preset water injection amount M4, wherein M1 is more than M2 and more than M3 and more than M4; a first preset compensation coefficient c1, a second preset compensation coefficient c2, a third preset compensation coefficient c3 and a fourth preset compensation coefficient c4 are also set in the processing module, and c1 and c2 are more than 1 and more than c3 and more than c4 are more than 1.2;
the processing module is further configured to, when the ith preset water source injection amount L0i is selected as the first water source injection amount L1, the second water source injection amount L2, and the third water source injection amount L3, select a compensation coefficient according to a relationship between the ith preset water source injection amount L0i and each preset water injection amount to compensate the average gray value Ha of the pixel block, and use the compensated average gray value of the pixel block as the first average gray value H1, the second average gray value H2, or the third average gray value H3:
when L0i is less than M1, selecting the first preset compensation coefficient c1 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha c1 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M1 is more than L0i and less than or equal to M2, selecting the second preset compensation coefficient c2 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c2 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M2 is more than L0i and less than or equal to M3, selecting the third preset compensation coefficient c3 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c3 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
and when the M3 is more than L0i and less than or equal to M4, selecting the fourth preset compensation coefficient c4 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c4 as the first average gray value H1, the second average gray value H2 or the third average gray value H3.
Further, the processing module is further configured to obtain an initial average gray value Hb when the first filter screen, the second filter screen, or the third filter screen is not used for water source filtration;
the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen or the third filter screen, perform gray processing on the image frame, remove pixel blocks in all the pixel blocks, the gray values of which are equal to the initial average gray value Hb, after acquiring the gray value of each pixel block of the image frame, and calculate the average gray value Ha according to the gray values of the remaining pixel blocks.
Furthermore, water outlets are formed in the lower ends of the first cylinder, the second cylinder and the third cylinder and communicated with a water drainage pipeline, so that water sources in the first cylinder, the second cylinder and the third cylinder are discharged through the water drainage pipeline.
Further, the first filter screen, the second filter screen and the third filter screen are all T-shaped components, and the edges of the T-shaped components are arranged on the weighing unit in an overlapping mode.
Compared with the prior art, the invention has the advantages that the control unit, the water storage tank, the first filtering unit, the second filtering unit and the third filtering unit are arranged, the collected water source is conveyed into the water storage tank to be stored, the water source in the water storage tank is respectively filtered through the first filtering unit, the second filtering unit and the third filtering unit, the weight of the filtered plankton is weighed through the weighing unit, meanwhile, the image acquisition unit is used for carrying out image acquisition on the filtered plankton, so that whether the water source is polluted or not is judged according to the collected data, an alarm instruction is output to carry out water pollution early warning, and the early warning can be effectively carried out on the water source pollution in time according to the change of the plankton in the water source.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a plankton-based water pollution early warning system provided by an embodiment of the present invention;
fig. 2 is a functional block diagram of a plankton-based water pollution early warning system provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 and 2, this embodiment provides a water pollution early warning system based on plankton, including the control unit, storage water tank 1, first filter unit 2, second filter unit 2 and third filter unit 3, storage water tank 1 is a box structure, and is used for storing the water source, and accessible water pump will wait to detect the water in waters and extract to store in storage water tank 1 to follow-up use.
Specifically, be provided with level sensor 10 in the storage water tank 1, detect the water level height information or the liquid level height information in the storage water tank 1, level sensor 10 is connected with the control unit electricity to handle in transmitting the water level height information or the liquid level height information of gathering to the control unit.
Specifically, a conveying pipeline 8 is arranged at the water outlet end of the lower portion of the water storage tank 1, a flow meter 11 is arranged on the conveying pipeline 8, and the flow meter 11 is arranged close to the water outlet end of the lower portion of the water storage tank 1. The conveying pipeline 8 is connected in series with a first electromagnetic valve 51, a second electromagnetic valve 61 and a third electromagnetic valve 71, the first electromagnetic valve 51 is connected with a first pipeline 5, a water source is conveyed into the first filtering unit 2 through the first pipeline 5, the second electromagnetic valve 61 is connected with a second pipeline 6, the water source is conveyed into the second filtering unit 2 through the second pipeline 6, and the third electromagnetic valve 71 is connected with a third pipeline 7 and a water source is conveyed into the third filtering unit 3 through the third pipeline 7. The first solenoid valve 51, the second solenoid valve 61, and the third solenoid valve 71 are preferably three-way solenoid valves, which are electrically connected to the control unit, respectively, and the on/off states are controlled by the control unit.
Specifically, first filter unit 2 includes first filter screen 21, first weighing unit 22 and first drum 23, first weighing unit 22 sets up the upper end of first drum 23, first filter screen 21 inserts and establishes the inside of first drum 23, just first filter screen 21's edge is taken and is established on the first weighing unit 22, through first weighing unit 22 is right first filter screen 21 weighs, first filter screen 21 is located under first pipeline 5, be provided with first image acquisition unit 52 on the first pipeline 5, first image acquisition unit 52 is used for gathering first filter screen 21's image information. The first filter screen 21 is a T-shaped member, the middle part of the T-shaped member is a concave structure to accommodate the filtered plankton, the edge of the T-shaped member is overlapped on the first weighing unit 22, and the T-shaped member is not in contact with the inner side wall of the first cylinder 23, and the first weighing unit 22 is used for memorializing and weighing the filtered plankton on the first filter screen 21. Meanwhile, the image information of the plankton filtered on the first filter 21 is collected by the first image collecting unit 52.
Second filter unit 2 includes second filter screen 31, second weighing unit 32 and second drum 33, second weighing unit 32 sets up the upper end of second drum 33, second filter screen 31 is inserted and is established the inside of second drum 33, just the edge of second filter screen 31 is taken and is established on the second weighing unit 32, through second weighing unit 32 is right second filter screen 31 weighs, second filter screen 31 is located under the second pipeline 6, be provided with second image acquisition unit 62 on the second pipeline 6, second image acquisition unit 62 is used for gathering the image information of second filter screen 31. The second filter screen 31 is a T-shaped member, the middle part of the T-shaped member is a concave structure to accommodate the filtered plankton, the edge of the T-shaped member is overlapped on the second weighing unit 32, and the T-shaped member is not in contact with the inner side wall of the second cylinder 33, and the second weighing unit 32 is used for memorializing and weighing the filtered plankton on the second filter screen 31. Meanwhile, the image information of the plankton filtered on the second filter screen 31 is collected by the second image collecting unit 62.
The third filtering unit 3 comprises a third filter screen 41, a third weighing unit 42 and a third cylinder 43, the third weighing unit 42 is arranged at the upper end of the third cylinder 43, the third filter screen 41 is inserted into the third cylinder 43, the edge of the third filter screen 41 is overlapped on the third weighing unit 42, the third filter screen 41 is weighed by the third weighing unit 42, the third filter screen 41 is positioned right below the third pipeline 7, a third image collecting unit 72 is arranged on the third pipeline 7, and the third image collecting unit 72 is used for collecting image information of the third filter screen 41; the mesh number of the first filter screen 21 is smaller than that of the second filter screen 31, and the mesh number of the second filter screen 31 is smaller than that of the third filter screen 41. The third filter screen 41 is a T-shaped member, the middle part of the T-shaped member is a concave structure to accommodate the filtered plankton, the edge of the T-shaped member is overlapped on the third weighing unit 42, and the T-shaped member is not in contact with the inner side wall of the third cylinder 43, and the third weighing unit 42 is used for memorializing and weighing the filtered plankton on the third filter screen 41. Meanwhile, the image information of the plankton filtered on the third filter 41 is collected by the third image collecting unit 72.
Specifically, the lower ends of the first cylinder 23, the second cylinder 33 and the third cylinder 43 are provided with water outlets, and the water outlets are communicated with the water discharge pipeline 9 so as to discharge the water sources in the first cylinder 23, the second cylinder 33 and the third cylinder 43 through the water discharge pipeline 9.
Specifically, the first weighing unit 22, the first image capturing unit 52, the second weighing unit 32, the second image capturing unit 62, the third weighing unit 42, and the third image capturing unit 72 are electrically connected to the control unit, respectively, so as to transmit the weight data and the image data captured by the control unit to the control unit for processing.
Continuing to refer to fig. 2, the control unit includes a processing module, a control module, an acquisition module and an alarm module, the acquisition module is electrically connected to the liquid level sensor 10, the flowmeter 11, the first image acquisition unit 52, the second image acquisition unit 62, the third image acquisition unit 72, the first weighing unit 22, the second weighing unit 32 and the third weighing unit 42 respectively for data acquisition, the control module is electrically connected to the first electromagnetic valve 51, the second electromagnetic valve 61 and the third electromagnetic valve 71 for controlling the same, the processing module is configured to acquire data acquired by the acquisition module, determine whether a water source is polluted according to the acquired data, and output an alarm instruction, and the alarm module is configured to execute the alarm instruction.
Specifically, the flow meter 11 can detect water flow data, and the water supply delivery amount can be obtained from the water flow data.
Specifically, the alarm module is further connected with the server or the monitoring terminal to transmit the alarm instruction to the server or the monitoring terminal to remind workers of the water source pollution condition.
Specifically, when specifically implementing, will wait to detect in water source extracts to storage water tank 1 to carry the water source in the storage water tank 1 to first filter unit 2, second filter unit 2 and third filter unit 3 in proper order and filter, thereby judge whether the water is polluted according to the condition of the plankton after first filter unit 2, second filter unit 2 and the filtration of third filter unit 3.
It can be seen that this embodiment is through setting up the control unit, storage water tank 1, first filter unit 2, second filter unit 2 and third filter unit 3, carry the water source of gathering to storing in storage water tank 1, and through first filter unit 2, second filter unit 2 and third filter unit 3 filter the water source in the storage water tank 1 respectively, and weigh the weight of the plankton after filtering through the weighing unit, and simultaneously, carry out image acquisition through the image acquisition unit to the plankton after filtering, thereby judge whether the water source is polluted according to the data of gathering, and output alarm instruction is in order to carry out the water pollution early warning, can carry out the early warning to the water source pollution in time according to the change of the plankton in the water source effectively.
Specifically, the processing module is further configured to determine a real-time liquid level height Δ L in the water storage tank from the data acquired by the acquisition module, determine an amount of water injected into the first filtering unit according to the real-time liquid level height Δ L, and record the amount of water as a first water source injection amount L1, after the first water source injection amount L1 is injected into the first filtering unit, obtain a first mass Δ W1 of plankton on the first filter screen, acquire image information of the plankton on the first filter screen by using the first image acquisition unit, and acquire a first average gray value H1 from the image information;
the processing module is further used for setting a standard planktonic biomass W0 and a standard average gray-scale value H0, and judging whether the water source is polluted according to the first mass delta W1 and the first average gray-scale value H1:
when the delta W1 is not less than W0 and the H1 is not less than H0, judging that the water source is not polluted;
when the delta W1 is more than W0 and the H1 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the delta W1 is not less than W0 and H1 is more than H0, or when the delta W1 is more than W0 and H1 is not more than H0, the water source is judged to be possibly polluted.
Specifically, the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the second filtering unit, which is recorded as a second water source injection amount L2, obtain a second mass Δ W2 of plankton on the second filter screen after the second water source injection amount L2 is injected into the second filtering unit, acquire image information of the plankton on the second filter screen through the second image acquisition unit, and acquire a second average gray value H2 from the image information; the processing module is also used for setting a standard planktonic biomass difference A0;
the processing module is also used for judging whether the water source is polluted again according to the difference value between the first quality delta W1 and the second quality delta W2 and the second average gray value H2 when the delta W1 is not more than W0, the H1 is more than H0 or the delta W1 is more than W0, the H1 is not more than H0, and the water source is judged to be possibly polluted:
when the absolute delta W2-delta W1 is less than or equal to A0 and the H2 is less than or equal to H0, judging that the water source is not polluted;
when the absolute value of delta W2-delta W1 is more than A0 and H2 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the absolute value of delta W2-delta W1 is less than or equal to A0 and H2 is more than H0, or when the absolute value of delta W2-delta W1 is more than A0 and H2 is less than or equal to H0, judging that the water source is possibly polluted.
Specifically, the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the third filtering unit, which is recorded as a third water source injection amount L3, obtain a third mass Δ W3 of plankton on the third filter screen after injecting a third water source injection amount L3 into the third filtering unit, acquire image information of the plankton on the third filter screen through the third image acquisition unit, and acquire a third average gray value H3 from the image information; the processing module is also used for setting a ratio B0 of standard quality to gray value;
the processing module is further used for judging whether the water source is polluted again according to the ratio between the third water source injection quantity L3 and the third quality delta W3 and the standard quality-to-gray value ratio B0:
when L3/[ delta ] W3 is larger than B0, judging that the water source is polluted, and alarming through the alarm module;
and when the L3/. DELTA.W 3 is less than or equal to B0, judging that the water source is not polluted.
It can be seen that after the water source is filtered by the first filtering unit, the second filtering unit and the third filtering unit respectively, because the mesh numbers of the filtering nets of the first filtering unit, the second filtering unit and the third filtering unit are different, plankton with different sizes can be filtered out. According to filterable not equidimension plankton, judge the water source pollution condition to the change according to plankton that can be accurate learns the pollution condition of water in time, thereby has greatly improved the accuracy of result, can also greatly improve the efficiency of construction simultaneously.
Specifically, the processing module is further configured to determine, when setting the standard quality-to-gray-value ratio B0, according to the following formula: b0 { (L1/. DELTA.w 1+ L2/. DELTA.w 2+ L1/. DELTA.w 2+ L2/. DELTA.w 1+)/4+ [ (L1+ L2)/(. DELTA.w 1 +. DELTA.w 2) + (. DELTA.l 1-L2. DELTA.)/(. DELTA.w 1-. DELTA.w 2. DELTA.) ]/2 }/2. Specifically, the accuracy of the data can be greatly improved by determining the standard comparison value according to different water source injection amounts and the third mass of the plankton, so that the accuracy of the judgment result is ensured.
Specifically, the processing module is further configured to set a first preset liquid level height L1, a second preset liquid level height L2, a third preset liquid level height L3, and a fourth preset liquid level height L4, where L1 < L2 < L3 < L4; the processing module is also used for setting a first preset water source injection amount L01, a second preset water source injection amount L02, a third preset water source injection amount L03 and a fourth preset water source injection amount L04, wherein L01 is more than L02 and more than L03 and more than L04;
the processing module is also used for determining the water injection amount when water is injected into the first filtering unit, the second filtering unit and the third filtering unit according to the relation between the real-time liquid level height Delta L in the water storage tank and each preset liquid level height:
when the delta L is less than or equal to L1, taking the first preset water source injection amount L01 as the first water source injection amount L1, the second water source injection amount L2 and the third water source injection amount L3;
when the delta L is more than or equal to L1 and less than L2, taking the second preset water source injection quantity L02 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
when the delta L is more than or equal to L2 and less than L3, taking the third preset water source injection quantity L03 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
and when the delta L is more than or equal to L3 and less than L4, taking the fourth preset water source injection quantity L04 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3.
Specifically, the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen, or the third filter screen, perform gray processing on the image frame, acquire a gray value of each pixel block of the image frame, and calculate an average gray value Ha of all the pixel blocks after determining the gray values of all the pixel blocks;
the processing module is also used for setting a first preset water injection amount M1, a second preset water injection amount M2, a third preset water injection amount M3 and a fourth preset water injection amount M4, wherein M1 is more than M2 and more than M3 and more than M4; a first preset compensation coefficient c1, a second preset compensation coefficient c2, a third preset compensation coefficient c3 and a fourth preset compensation coefficient c4 are also set in the processing module, and c1 and c2 are more than 1 and more than c3 and more than c4 are more than 1.2;
the processing module is further configured to, when the ith preset water source injection amount L0i is selected as the first water source injection amount L1, the second water source injection amount L2, and the third water source injection amount L3, select a compensation coefficient according to a relationship between the ith preset water source injection amount L0i and each preset water injection amount to compensate the average gray value Ha of the pixel block, and use the compensated average gray value of the pixel block as the first average gray value H1, the second average gray value H2, or the third average gray value H3:
when L0i is less than M1, selecting the first preset compensation coefficient c1 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha c1 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M1 is more than L0i and less than or equal to M2, selecting the second preset compensation coefficient c2 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c2 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M2 is more than L0i and less than or equal to M3, selecting the third preset compensation coefficient c3 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c3 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
and when the M3 is more than L0i and less than or equal to M4, selecting the fourth preset compensation coefficient c4 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c4 as the first average gray value H1, the second average gray value H2 or the third average gray value H3.
Specifically, when the i-th preset water source injection amount L0i is selected as the first water source injection amount L1, the second water source injection amount L2, and the third water source injection amount L3 by the processing module, a compensation coefficient is selected according to a relationship between the i-th preset water source injection amount L0i and each preset water injection amount to compensate the average gray value Ha of the pixel block, and the compensated average gray value of the pixel block is used as the first average gray value H1, the second average gray value H2, or the third average gray value H3, so that the accuracy of the obtained average gray value can be greatly improved.
Specifically, the processing module is further configured to obtain an initial average gray value Hb when the first filter screen, the second filter screen, or the third filter screen is not used for water source filtration;
the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen or the third filter screen, perform gray processing on the image frame, remove pixel blocks in all the pixel blocks, the gray values of which are equal to the initial average gray value Hb, after acquiring the gray value of each pixel block of the image frame, and calculate the average gray value Ha according to the gray values of the remaining pixel blocks.
Specifically, the control unit may be a data processing device such as an industrial personal computer, a controller, or a computer, which has data processing and control capabilities.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. A plankton-based water pollution early warning system is characterized by comprising: the water source filtering device comprises a control unit, a water storage tank, a first filtering unit, a second filtering unit and a third filtering unit, wherein the water storage tank is used for storing a water source, a liquid level sensor is arranged in the water storage tank, a conveying pipeline is arranged at the water outlet end of the lower portion of the water storage tank, a flow meter is arranged on the conveying pipeline, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve are connected in series with the conveying pipeline, the first electromagnetic valve is connected with the first pipeline to convey the water source into the first filtering unit, the second electromagnetic valve is connected with the second pipeline to convey the water source into the second filtering unit, and the third electromagnetic valve is connected with the third pipeline to convey the water source into the third filtering unit;
the first filtering unit comprises a first filter screen, a first weighing unit and a first cylinder, the first weighing unit is arranged at the upper end of the first cylinder, the first filter screen is inserted into the first cylinder, the edge of the first filter screen is overlapped on the first weighing unit, the first filter screen is weighed by the first weighing unit, the first filter screen is positioned right below the first pipeline, a first image acquisition unit is arranged on the first pipeline, and the first image acquisition unit is used for acquiring image information of the first filter screen;
the second filtering unit comprises a second filter screen, a second weighing unit and a second cylinder, the second weighing unit is arranged at the upper end of the second cylinder, the second filter screen is inserted into the second cylinder, the edge of the second filter screen is overlapped on the second weighing unit, the second filter screen is weighed by the second weighing unit and is positioned right below the second pipeline, a second image acquisition unit is arranged on the second pipeline, and the second image acquisition unit is used for acquiring image information of the second filter screen;
the third filtering unit comprises a third filter screen, a third weighing unit and a third cylinder, the third weighing unit is arranged at the upper end of the third cylinder, the third filter screen is inserted into the third cylinder, the edge of the third filter screen is arranged on the third weighing unit in a lap mode, the third filter screen is weighed through the third weighing unit, the third filter screen is located right below the third pipeline, a third image acquisition unit is arranged on the third pipeline, and the third image acquisition unit is used for acquiring image information of the third filter screen; the mesh number of the first filter screen is smaller than that of the second filter screen, and the mesh number of the second filter screen is smaller than that of the third filter screen;
the control unit comprises a processing module, a control module, a collection module and an alarm module, wherein the collection module is respectively electrically connected with the liquid level sensor, the flowmeter, the first image collection unit, the second image collection unit, the third image collection unit, the first weighing unit, the second weighing unit and the third weighing unit to collect data, the control module is electrically connected with the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to control the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, the processing module is used for acquiring the data collected by the collection module, judging whether a water source is polluted according to the acquired data and outputting an alarm instruction, and the alarm module is used for executing the alarm instruction.
2. The plankton-based water pollution warning system of claim 1,
the processing module is further configured to determine a real-time liquid level height Δ L in the water storage tank from the data acquired by the acquisition module, determine an amount of water injected into the first filtering unit according to the real-time liquid level height Δ L, and record the amount of water as a first water source injection amount L1, after the first water source injection amount L1 is injected into the first filtering unit, obtain a first mass Δ W1 of plankton on the first filter screen, acquire image information of the plankton on the first filter screen through the first image acquisition unit, and acquire a first average gray value H1 from the image information;
the processing module is further used for setting a standard planktonic biomass W0 and a standard average gray-scale value H0, and judging whether the water source is polluted according to the first mass delta W1 and the first average gray-scale value H1:
when the delta W1 is not less than W0 and the H1 is not less than H0, judging that the water source is not polluted;
when the delta W1 is more than W0 and the H1 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the delta W1 is not less than W0 and H1 is more than H0, or when the delta W1 is more than W0 and H1 is not more than H0, the water source is judged to be possibly polluted.
3. The plankton-based water pollution warning system of claim 2,
the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the second filtering unit, which is recorded as a second water source injection amount L2, obtain a second mass Δ W2 of plankton on the second filter screen after the second water source injection amount L2 is injected into the second filtering unit, acquire image information of the plankton on the second filter screen through the second image acquisition unit, and acquire a second average gray value H2 from the image information; the processing module is also used for setting a standard planktonic biomass difference A0;
the processing module is also used for judging whether the water source is polluted again according to the difference value between the first quality delta W1 and the second quality delta W2 and the second average gray value H2 when the delta W1 is not more than W0, the H1 is more than H0 or the delta W1 is more than W0, the H1 is not more than H0, and the water source is judged to be possibly polluted:
when the absolute delta W2-delta W1 is less than or equal to A0 and the H2 is less than or equal to H0, judging that the water source is not polluted;
when the absolute value of delta W2-delta W1 is more than A0 and H2 is more than H0, judging that the water source is polluted, and alarming through the alarm module;
when the absolute value of delta W2-delta W1 is less than or equal to A0 and H2 is more than H0, or when the absolute value of delta W2-delta W1 is more than A0 and H2 is less than or equal to H0, judging that the water source is possibly polluted.
4. The plankton-based water pollution warning system of claim 3,
the processing module is further configured to determine, according to the real-time liquid level height Δ L, an amount of water injected into the third filtering unit, which is recorded as a third water source injection amount L3, obtain a third mass Δ W3 of plankton on the third filter screen after injecting a third water source injection amount L3 into the third filtering unit, acquire image information of the plankton on the third filter screen through the third image acquisition unit, and acquire a third average gray value H3 from the image information; the processing module is also used for setting a ratio B0 of standard quality to gray value;
the processing module is further used for judging whether the water source is polluted again according to the ratio between the third water source injection quantity L3 and the third quality delta W3 and the standard quality-to-gray value ratio B0:
when L3/[ delta ] W3 is larger than B0, judging that the water source is polluted, and alarming through the alarm module;
and when the L3/. DELTA.W 3 is less than or equal to B0, judging that the water source is not polluted.
5. The plankton-based water pollution warning system of claim 4,
the processing module is further configured to determine, when setting the standard quality-to-gray value ratio B0, according to the following equation: b0 { (L1/. DELTA.w 1+ L2/. DELTA.w 2+ L1/. DELTA.w 2+ L2/. DELTA.w 1+)/4+ [ (L1+ L2)/(. DELTA.w 1 +. DELTA.w 2) + (. DELTA.l 1-L2. DELTA.)/(. DELTA.w 1-. DELTA.w 2. DELTA.) ]/2 }/2.
6. The plankton-based water pollution warning system of claim 5,
the processing module is also used for setting a first preset liquid level height L1, a second preset liquid level height L2, a third preset liquid level height L3 and a fourth preset liquid level height L4, wherein L1 is more than L2 and more than L3 and more than L4; the processing module is also used for setting a first preset water source injection amount L01, a second preset water source injection amount L02, a third preset water source injection amount L03 and a fourth preset water source injection amount L04, wherein L01 is more than L02 and more than L03 and more than L04;
the processing module is also used for determining the water injection amount when water is injected into the first filtering unit, the second filtering unit and the third filtering unit according to the relation between the real-time liquid level height Delta L in the water storage tank and each preset liquid level height:
when the delta L is less than or equal to L1, taking the first preset water source injection amount L01 as the first water source injection amount L1, the second water source injection amount L2 and the third water source injection amount L3;
when the delta L is more than or equal to L1 and less than L2, taking the second preset water source injection quantity L02 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
when the delta L is more than or equal to L2 and less than L3, taking the third preset water source injection quantity L03 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3;
and when the delta L is more than or equal to L3 and less than L4, taking the fourth preset water source injection quantity L04 as the first water source injection quantity L1, the second water source injection quantity L2 and the third water source injection quantity L3.
7. The plankton-based water pollution warning system of claim 6,
the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen or the third filter screen, perform gray processing on the image frame, acquire a gray value of each pixel block of the image frame, and calculate an average gray value Ha of all the pixel blocks after determining the gray values of all the pixel blocks;
the processing module is also used for setting a first preset water injection amount M1, a second preset water injection amount M2, a third preset water injection amount M3 and a fourth preset water injection amount M4, wherein M1 is more than M2 and more than M3 and more than M4; a first preset compensation coefficient c1, a second preset compensation coefficient c2, a third preset compensation coefficient c3 and a fourth preset compensation coefficient c4 are also set in the processing module, and c1 and c2 are more than 1 and more than c3 and more than c4 are more than 1.2;
the processing module is further configured to, when the ith preset water source injection amount L0i is selected as the first water source injection amount L1, the second water source injection amount L2, and the third water source injection amount L3, select a compensation coefficient according to a relationship between the ith preset water source injection amount L0i and each preset water injection amount to compensate the average gray value Ha of the pixel block, and use the compensated average gray value of the pixel block as the first average gray value H1, the second average gray value H2, or the third average gray value H3:
when L0i is less than M1, selecting the first preset compensation coefficient c1 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha c1 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M1 is more than L0i and less than or equal to M2, selecting the second preset compensation coefficient c2 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c2 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
when M2 is more than L0i and less than or equal to M3, selecting the third preset compensation coefficient c3 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c3 as the first average gray value H1, the second average gray value H2 or the third average gray value H3;
and when the M3 is more than L0i and less than or equal to M4, selecting the fourth preset compensation coefficient c4 to compensate the average gray value Ha of the pixel block, and taking the compensated average gray value Ha × c4 as the first average gray value H1, the second average gray value H2 or the third average gray value H3.
8. The plankton-based water pollution warning system of claim 7,
the processing module is further used for acquiring an initial average gray value Hb of the first filter screen, the second filter screen or the third filter screen when the water source is not filtered;
the processing module is further configured to intercept an image frame from the image information after acquiring the image information of the first filter screen, the second filter screen or the third filter screen, perform gray processing on the image frame, remove pixel blocks in all the pixel blocks, the gray values of which are equal to the initial average gray value Hb, after acquiring the gray value of each pixel block of the image frame, and calculate the average gray value Ha according to the gray values of the remaining pixel blocks.
9. The plankton-based water pollution warning system of claim 1,
the lower ends of the first cylinder, the second cylinder and the third cylinder are provided with water outlets, and the water outlets are communicated with a water drainage pipeline so as to discharge water sources in the first cylinder, the second cylinder and the third cylinder through the water drainage pipeline.
10. The plankton-based water pollution warning system of claim 1, wherein the first, second and third screens are all a T-shaped member, and the edges of the T-shaped member are overlapped on the weighing unit.
CN202111076243.XA 2021-09-14 2021-09-14 Water pollution early warning system based on plankton Withdrawn CN113730983A (en)

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