CN114485781A - Floating type cyanobacterial bloom monitoring system for shallow lake and forecasting method - Google Patents
Floating type cyanobacterial bloom monitoring system for shallow lake and forecasting method Download PDFInfo
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Abstract
The invention discloses a floating-sinking type cyanobacteria bloom monitoring system and a forecasting method for a shallow lake, which comprise a cyanobacteria bloom monitoring device module and a cyanobacteria bloom forecasting module, wherein a cyanobacteria bloom monitoring system is perfected by monitoring weather, hydrology and water quality at different water depths, a multi-element, deep and low-cost monitoring device is constructed, the monitoring of water quality, weather and hydrology data in a fixed-point area of the lake can be realized, and the device can automatically cruise to monitor the occurrence condition of cyanobacteria bloom in the lake timely and comprehensively according to actual requirements; through the treatment of weather, hydrology and water quality, the occurrence condition of cyanobacterial bloom in a period of time in the future is predicted by utilizing a big data technology, and the early warning grade is divided by referring to the actual management demand and is sent to the corresponding administrative management department in a grading manner.
Description
Technical Field
The invention relates to the technical field of cyanobacterial bloom monitoring and early warning, in particular to a floating cyanobacterial bloom monitoring system and a forecasting method applied to shallow lakes.
Background
In recent years, the eutrophication of water bodies in China is increasingly serious, and most freshwater lakes and reservoirs in China are in a mild or moderate eutrophication state. In some water bodies with rich nutrition, nutrients are difficult to digest to cause overnutrition, blue algae are usually propagated in summer, and the mass propagation of the blue algae deteriorates ventilation, illumination and oxygen deficiency in water, so that plankton in the water grows and propagates, thereby inhibiting the photosynthesis of the algae, reducing the living space of fish and other organisms, forming a layer of blue-green and foul-smelling froth called water bloom during sleep, and causing water quality deterioration. The water body biological diversity caused by the cyanobacterial bloom is reduced rapidly, and the death of fish caused by the exhaustion of oxygen in water is caused seriously, so that the instant monitoring of the cyanobacterial and the water body with the cyanobacterial bloom phenomenon is developed, the instant analysis and feedback of the monitoring data are carried out, and the instant early warning and effective treatment means are facilitated to be established.
The current cyanobacterial bloom monitoring mainly comprises manual cruising and fixed-point automatic monitoring, but the manual cruising monitoring needs a large amount of manpower and material resources; the automatic fixed-point monitoring needs high-density arrangement, and the monitoring cost is higher.
Disclosure of Invention
The invention discloses a sinking-floating type cyanobacteria bloom monitoring system and a forecasting method for a shallow lake, which solve the problems that a large amount of manpower and material resources are consumed for the current manual cruising monitoring, the automatic fixed-point monitoring needs high-density arrangement, and the monitoring cost is higher.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention discloses a floating type cyanobacteria water bloom monitoring system for a shallow lake, which comprises a cyanobacteria water bloom monitoring device module and a cyanobacteria water bloom forecasting module, wherein the cyanobacteria water bloom monitoring device module comprises a weather monitoring unit, a hydrological monitoring unit, a water quality monitoring unit and a cruising unit, wherein the weather monitoring unit is used for acquiring weather information of a monitored area; the hydrologic monitoring unit is used for acquiring hydrologic information of a monitored area; the water quality monitoring unit is used for acquiring water quality information of a monitored area; the cruise unit comprises a laser range finder and a GPS positioning device and is used for realizing cruise monitoring at a specified place in a monitored area; the cyanobacterial bloom forecasting module comprises a detection information preprocessing unit, a detection information visualization unit, a forecasting information unit and an information sending unit, wherein the monitoring information preprocessing unit is used for processing monitoring dirty data in real time and improving the quality of the monitoring data; the monitoring information visualization unit is used for visualizing the water quality and hydrological conditions of the monitored area; the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, and a forecasting model of the cyanobacterial bloom is constructed by a big data technology to obtain forecasting information; and the information sending unit carries out hierarchical processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments.
Further, the floating type cyanobacterial bloom monitoring system for the shallow lake further comprises an energy storage unit, wherein the energy storage unit is used for providing electric energy for the cruise unit.
Further, the energy storage unit comprises a solar panel and an energy storage battery, wherein the solar panel is used for converting solar energy into electric energy; the energy storage battery is used for storing the electric energy converted by the solar cell panel.
Further, the meteorological monitoring unit comprises a wind direction sensor, a wind speed sensor, a rainfall sensor, a light illumination sensor and a pressure sensor, wherein the wind direction sensor is used for acquiring a wind direction; the wind speed sensor is used for acquiring wind speed; the rainfall sensor is used for acquiring rainfall; the illumination sensor is used for acquiring illumination intensity; the sunshine duration sensor is used for acquiring sunshine duration; the air pressure sensor is used for acquiring atmospheric pressure.
Further, the hydrological monitoring unit comprises a water depth detector, a flow rate monitor and a flow direction monitor, wherein the water depth detector is used for detecting the depth of the water area; the flow rate monitor is used for monitoring the water flow rate in the area; the flow direction monitor is used for monitoring the water flow direction in the area.
Furthermore, the water quality monitoring unit comprises a dissolved oxygen monitoring sensor, a turbidity monitoring sensor and a conductivity monitoring sensor, wherein the dissolved oxygen monitoring sensor is used for monitoring the milligrams of oxygen in each liter of water in the water area; the turbidity monitoring sensor is used for monitoring the water turbidity in the water area; the conductivity monitoring sensor is used for monitoring the conductivity in the water area.
Furthermore, the dissolved oxygen monitoring sensor, the turbidity monitoring sensor and the conductivity monitoring sensor are all retractable structures.
Furthermore, the water quality monitoring unit also comprises a cleaning spray head used for cleaning the probes of the dissolved oxygen monitoring sensor, the turbidity monitoring sensor and the conductivity monitoring sensor at regular time.
The invention also discloses a forecasting method of the floating type cyanobacterial bloom monitoring system for the shallow lake, which comprises the following steps:
the weather monitoring unit acquires weather information of a monitored area in real time; the hydrological monitoring unit acquires hydrological information of a monitored area in real time; the water quality monitoring unit acquires water quality information of a monitored area in real time;
the monitoring information preprocessing unit processes monitoring dirty data and improves the quality of the monitoring data;
the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, a forecasting model of the cyanobacterial bloom is constructed through a big data technology, the forecasting information is obtained, and information visualization is realized;
the information sending unit carries out grading processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments.
Further, the method for constructing the cyanobacterial bloom forecasting model by the forecasting information unit comprises the following steps:
s1: integrating meteorological information acquired by a meteorological monitoring unit in real time, hydrological information acquired by a hydrological monitoring unit in real time and water quality information acquired by a water quality monitoring unit in real time to form a data set D, wherein D is [ water quality, hydrology and meteorology ];
s2: preprocessing data;
s21: data outlier screening
S22: completing missing data values;
s3: screening important influence variables of the cyanobacterial bloom;
s4: constructing a blue algae bloom forecasting model;
s41: dividing a data variable and a data label;
s42: dividing a data set;
s43: building a model;
s44: verifying the model;
s5: forecasting the water quality;
s6: and visualizing forecast information.
The beneficial technical effects are as follows:
the invention discloses a floating-sinking type cyanobacteria bloom monitoring system and a forecasting method for a shallow lake, which comprise a cyanobacteria bloom monitoring device module and a cyanobacteria bloom forecasting module, wherein the cyanobacteria bloom monitoring device module comprises a weather monitoring unit, a hydrological monitoring unit, a water quality monitoring unit and a cruising unit, wherein the weather monitoring unit is used for acquiring weather information of a monitored area; the hydrologic monitoring unit is used for acquiring hydrologic information of a monitored area; the water quality monitoring unit is used for acquiring water quality information of a monitored area; the cruise unit comprises a laser range finder and a GPS positioning device and is used for realizing cruise monitoring at a specified place in a monitored area; the cyanobacterial bloom forecasting module comprises a detection information preprocessing unit, a detection information visualization unit, a forecasting information unit and an information sending unit, wherein the monitoring information preprocessing unit is used for processing monitoring dirty data in real time and improving the quality of the monitoring data; the monitoring information visualization unit is used for visualizing the water quality and hydrological conditions of the monitored area; the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, and a forecasting model of the cyanobacterial bloom is constructed by a big data technology to obtain forecasting information; and the information sending unit carries out hierarchical processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a block diagram of a floating cyanobacterial bloom monitoring system for a shallow lake according to the present invention;
FIG. 2 is a flow chart of the steps of the forecasting method of the ups and downs type cyanobacterial bloom monitoring system for shallow lakes.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention discloses a sinking and floating type cyanobacterial bloom monitoring system for a shallow lake, which comprises a cyanobacterial bloom monitoring device module and a cyanobacterial bloom forecasting module, wherein the cyanobacterial bloom monitoring system for the shallow lake comprises a meteorological monitoring unit, a hydrological monitoring unit, a water quality monitoring unit and a cruising unit, wherein the meteorological monitoring unit is used for acquiring meteorological information of a monitored area and acquiring meteorological information including but not limited to wind direction, wind speed, rainfall, illumination intensity, illumination duration, atmospheric pressure and the like, preferably, the meteorological monitoring unit comprises a wind direction sensor, a wind speed sensor, a rainfall sensor, a light illumination sensor, a sunshine duration sensor and an air pressure sensor, wherein the wind direction sensor is used for acquiring wind direction; the wind speed sensor is used for acquiring wind speed; the rainfall sensor is used for acquiring rainfall; the illumination sensor is used for acquiring illumination intensity; the sunshine duration sensor is used for acquiring sunshine duration; the air pressure sensor is used for acquiring atmospheric pressure; the hydrologic monitoring unit is used for acquiring hydrologic information of a monitored area, and acquiring hydrologic information including but not limited to water depth, water flow velocity and water flow direction, preferably, the hydrologic monitoring unit comprises a water depth detector, a flow velocity monitor and a flow direction detector, wherein the water depth detector is used for detecting the depth of the water area; the flow rate monitor is used for monitoring the water flow rate in the area; the flow direction monitor is used for monitoring the water flow direction in the area; the water quality monitoring unit is used for acquiring water quality information of a monitored area, and acquiring water quality information including but not limited to dissolved oxygen, conductivity, turbidity, chlorophyll and the like, preferably, the water quality monitoring unit comprises a dissolved oxygen monitoring sensor, a turbidity monitoring sensor and a conductivity monitoring sensor, wherein the dissolved oxygen monitoring sensor is used for monitoring the milligrams of oxygen in each liter of water in the water area; the turbidity monitoring sensor is used for monitoring the water turbidity in the water area; the conductivity monitoring sensor is used for monitoring the conductivity in the water area, the water quality sensors are all arranged in a telescopic mode, monitoring in different water depths is achieved, and in order to avoid the probe from being shielded by phytoplankton underwater, the water quality monitoring unit is further provided with a cleaning nozzle which can clean the probe at regular time; the cruise unit comprises a laser range finder and a GPS positioning device, and is used for realizing cruise monitoring at a specified place in a monitored area, specifically, the GPS positioning device can position the position of the device, meanwhile, the position of the area required to be monitored can be input according to actual requirements, the cruise unit can automatically cruise to the specified area for monitoring, the laser range finder can calculate the distance between a cyanobacteria bloom monitoring system and an obstacle, a distance matrix is generated, an intensity-based abnormal value detection algorithm is applied to the distance matrix, an LOF algorithm is adopted for abnormal value detection, whether the obstacle exists in the front is judged, if the obstacle exists in the front, the cruise unit can send an obstacle avoidance instruction cyanobacteria bloom forecasting module to the system, and the cyanobacteria bloom forecasting module comprises a monitoring information preprocessing unit, a monitoring information visualization unit, a forecasting information unit and an information sending unit, wherein the monitoring information preprocessing unit is used for processing the monitoring dirty data in real time, improving the quality of monitoring data, specifically, screening abnormal values through an LOF algorithm based on density monitoring, removing the abnormal values, and completing with a front average value and a rear average value; the monitoring information visualization unit is used for visualizing the water quality and hydrological conditions of the monitored area, and particularly, the visualization of the water quality and hydrological information is realized through a GIS difference method; the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, a forecasting model of the cyanobacterial bloom is constructed through a big data technology, the forecasting information is obtained, specifically, the forecasting information unit integrates water quality, hydrological and meteorological data, and the relation among water quality, hydrological and meteorological data is mined through big data technologies such as machine learning and deep learning, so that the cyanobacterial bloom forecasting model is established; the information sending unit carries out classification processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments, and specifically, the information sending unit divides the early warning levels into a first-level early warning, a second-level early warning and a third-level early warning according to the explosion degree of the cyanobacterial bloom in the actual lake and pushes the early warning levels to different administrative management departments.
As a preferred embodiment of the present invention, the floating and sinking type cyanobacteria water bloom monitoring system for shallow lakes further comprises an energy storage unit, the energy storage unit is used for providing electric energy for the cruise unit, preferably, the energy storage unit comprises a solar cell panel and an energy storage battery, wherein the solar cell panel is used for converting solar energy into electric energy; the energy storage battery is used for storing the electric energy converted by the solar panel.
The invention discloses a forecasting method of a floating type cyanobacterial bloom monitoring system for a shallow lake on the other hand, which is shown in figure 2 and specifically comprises the following steps:
s1: the weather monitoring unit acquires weather information of a monitored area in real time; the hydrologic monitoring unit acquires hydrologic information of a monitored area in real time; the water quality monitoring unit acquires water quality information of a monitored area in real time;
s2: the monitoring information preprocessing unit processes monitoring dirty data and improves the quality of the monitoring data;
s3: the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, a forecasting model of the cyanobacterial bloom is constructed through a big data technology, the forecasting information is obtained, and information visualization is realized;
specifically, the specific steps of constructing the forecasting model of the cyanobacterial bloom comprise:
integrating meteorological information acquired by a meteorological monitoring unit in real time, hydrological information acquired by a hydrological monitoring unit in real time and water quality information acquired by a water quality monitoring unit in real time to form a data set D, wherein D is [ water quality, hydrology and meteorology ];
preprocessing data;
specifically, the data preprocessing comprises data outlier screening and data missing value completion;
screening important influence variables of the cyanobacterial bloom;
constructing a blue algae bloom forecasting model;
specifically, the construction of the blue algae bloom forecasting model comprises data variable and data label division, data set division, model building, model verification and model analysis,
Forecasting the water quality;
forecasting information visualization;
s4: the information sending unit carries out grading processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments.
The invention discloses a floating-sinking type cyanobacteria bloom monitoring system and a forecasting method for a shallow lake, which perfects a cyanobacteria bloom monitoring system by monitoring weather, hydrology and water quality at different water depths, constructs a multi-element, deep and low-cost monitoring device, can realize monitoring of water quality, weather and hydrology data in a fixed-point area of the lake, and can automatically cruise to monitor the cyanobacteria bloom occurrence condition of the lake timely and comprehensively; through the treatment of weather, hydrology and water quality, the occurrence condition of cyanobacterial bloom in a period of time in the future is predicted by utilizing a big data technology, and the early warning grade is divided by referring to the actual management demand and is sent to the corresponding administrative management department in a grading manner.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. The utility model provides a heavy floating type cyanobacterial bloom monitoring system for shallow lake which characterized in that, includes cyanobacterial bloom monitoring devices module and cyanobacterial bloom forecast module, wherein, cyanobacterial bloom monitoring devices module includes:
the meteorological monitoring unit is used for acquiring meteorological information of a monitored area;
the hydrologic monitoring unit is used for acquiring hydrologic information of a monitored area;
the water quality monitoring unit is used for acquiring water quality information of a monitored area;
the cruise unit comprises a laser range finder and a GPS positioning device and is used for realizing cruise monitoring at a specified place in a monitored area;
the blue algae bloom forecasting module comprises:
the monitoring information preprocessing unit is used for processing and monitoring dirty data in real time and improving the quality of the monitoring data;
the monitoring information visualization unit is used for visualizing the water quality and hydrologic conditions of the monitored area;
the forecasting information unit is used for constructing a forecasting model of the cyanobacterial bloom through a big data technology by combining the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit to obtain forecasting information;
and the information sending unit is used for carrying out hierarchical processing on the forecast information acquired by the forecast information unit and sending the forecast information to different departments.
2. The system for monitoring the floating cyanobacterial bloom in a shallow lake according to claim 1, further comprising:
and the energy storage unit is used for providing electric energy for the cruise unit.
3. The system for monitoring the floating cyanobacterial bloom in a shallow lake of claim 2, wherein the energy storage unit comprises:
the solar cell panel is used for converting solar energy into electric energy;
and the energy storage battery is used for storing the electric energy converted by the solar panel.
4. The system for monitoring the floating cyanobacterial bloom in a shallow lake of claim 1, wherein the meteorological monitoring unit comprises:
a wind direction sensor for acquiring a wind direction;
the wind speed sensor is used for acquiring wind speed;
a rainfall sensor for acquiring rainfall;
the illumination sensor is used for acquiring illumination intensity;
the sunshine duration sensor is used for acquiring sunshine duration;
and the air pressure sensor is used for acquiring atmospheric pressure.
5. The system for monitoring the floating cyanobacterial bloom in a shallow lake of claim 1, wherein the hydrological monitoring unit comprises:
a water depth detector for detecting the depth of the water area;
a flow rate monitor for monitoring the flow rate of water in the area;
and the flow direction monitor is used for monitoring the water flow direction in the area.
6. The system for monitoring the floating cyanobacterial bloom in the shallow lake as claimed in claim 1, wherein the water quality monitoring unit comprises:
a dissolved oxygen monitoring sensor for monitoring milligrams of oxygen per liter of water in the water region;
a turbidity monitoring sensor for monitoring the turbidity of the water in the water region;
a conductivity monitoring sensor to monitor conductivity within the water region.
7. The system for monitoring the floating and sinking type cyanobacterial bloom in a shallow lake of claim 6, wherein the dissolved oxygen monitoring sensor, the turbidity monitoring sensor and the conductivity monitoring sensor are all retractable structures.
8. The system for monitoring the floating and sinking type cyanobacterial bloom in a shallow lake as claimed in claim 6, further comprising a cleaning nozzle for cleaning the probes of the dissolved oxygen monitoring sensor, the turbidity monitoring sensor and the conductivity monitoring sensor at regular time.
9. The forecasting method of the floating cyanobacterial bloom monitoring system for shallow lakes as claimed in any one of claims 1 to 8, comprising the following steps:
the meteorological monitoring unit acquires meteorological information of a monitored area in real time; the hydrologic monitoring unit acquires hydrologic information of a monitored area in real time; the water quality monitoring unit acquires water quality information of a monitored area in real time;
the monitoring information preprocessing unit processes monitoring dirty data and improves the quality of the monitoring data;
the forecasting information unit is combined with the meteorological information monitored by the meteorological monitoring unit, the hydrological information monitored by the hydrological monitoring unit and the water quality information monitored by the water quality monitoring unit, a forecasting model of the cyanobacterial bloom is constructed through a big data technology, the forecasting information is obtained, and information visualization is realized;
the information sending unit carries out hierarchical processing on the forecast information acquired by the forecast information unit and sends the forecast information to different departments.
10. The forecasting method of the floating cyanobacteria bloom monitoring system for the shallow lake of claim 9, wherein the construction of the cyanobacteria bloom forecasting model by the forecasting information unit comprises the following steps:
s1: integrating meteorological information acquired by a meteorological monitoring unit in real time, hydrological information acquired by a hydrological monitoring unit in real time and water quality information acquired by a water quality monitoring unit in real time to form a data set D, wherein D is [ water quality, hydrology and meteorology ];
s2: preprocessing data;
s21: data outlier screening
S22: completing missing data values;
s3: screening important influence variables of the cyanobacterial bloom;
s4: constructing a blue algae bloom forecasting model;
s41: dividing a data variable and a data label;
s42: dividing a data set;
s43: building a model;
s44: verifying the model;
s5: forecasting the water quality;
s6: and visualizing forecast information.
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