CN107632550B - Suspended matter stirring, filtering, concentrating, collecting and controlling system and method - Google Patents
Suspended matter stirring, filtering, concentrating, collecting and controlling system and method Download PDFInfo
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Abstract
A suspended matter stirring, filtering, concentrating, collecting and controlling system and method belongs to the technical field of environmental monitoring, environmental management and computer control. The water monitoring platform comprises a computer, a communication conversion module and a power supply, the underwater measurement acquisition device comprises a waterproof sealed cabin, a data acquisition module and a motor module, and the whole underwater measurement acquisition device acts as an execution mechanism of the system according to an instruction sent by the water monitoring platform and feeds back acquired sensor parameters and motor state signals. The invention can respectively serve as the starting condition and the ending condition of sampling according to the preset sampling depth and the final value of the sample concentration, and automatically complete the sampling process by combining the effective control of the stirring motor and the water pump, thereby greatly improving the sampling efficiency and ensuring the effectiveness of the sample.
Description
Technical Field
The invention belongs to the technical field of environmental monitoring, environmental management and computer control, and particularly relates to a suspended matter stirring, filtering, concentrating, acquiring and controlling system and method.
Background
With the deep development of industrialization and urbanization, the demand of centralized water supply is larger and larger, and the qualification standard of water quality of a water source area is higher and higher. Suspended matters refer to solid matters suspended in water, including inorganic matters, organic matters, silt, clay, microorganisms and the like which are insoluble in water, the content of the suspended matters in the water is one of indexes for measuring the water pollution degree, and the suspended matters play an important role in endogenous release of lakes and water environment change. Generally, the porous structure of the suspended matters enables the suspended matters to adsorb a large amount of pollutants and nutrient elements, wherein the content of nutrient salts, heavy metals and toxic and harmful organic matters is possibly several times higher than that of the sediments and is several hundred times higher than that of the dissolved state of the water body, and the nutrient load of the water body is increased along with the release of the nutrient elements in the decomposition and condensation processes of the suspended matters, so that the eutrophication of the water body is aggravated. Meanwhile, the increase of the concentration of suspended matters is the main reason for causing the reduction of the transparency of lake water and the increase of the optical attenuation coefficient, and the existence of the suspended matters in the water body can influence the water color of the water body and increase the attenuation of light radiation, thereby reducing the transparency of the water body, further changing the intensity distribution of underwater illumination and influencing the photosynthesis and the primary productivity level of lake zone phytoplankton. The research on the distribution characteristics and the influence factors of the concentration of the suspended matters in the water body and the types and the contents of the pollutants in the suspended matters has important practical significance for improving the transparency of the water body, improving a water ecosystem, exploring the migration and transformation of the pollutants in the water ecosystem and the accompanying ecological effect thereof and controlling the eutrophication of the water body.
Because the concentration of suspended particles in natural water is generally small, for the physical characteristics such as aperture, fractal dimension of suspended matters in water, a small amount of water sample can be collected and then observed under a microscope, but in order to determine the content, type and form of pollutants in the suspended particles, a sufficient amount of suspended matters must be obtained to carry out analysis and test, and the effective, convenient and quick suspended matter sample collection method and collection device are the basis for researching water suspended matters. At present, the collection modes of suspended matters are mainly two. The first method is that the water sample is collected by a water sampler on site and then is taken back to the laboratory for filtering by using glass fiber filter paper which is dried and weighed in advance, and the total weight of suspended matters is obtained by drying and weighing. The method needs to collect 5-10L of water samples at each general sampling point of the water body with low suspended matter content, even more than 100L of low-concentration and trace substances are needed for detection, the total volume of the water samples accumulated at a plurality of sampling positions can reach hundreds of L, the sampling process is complicated, a large amount of manual operation is needed, the number of the collected water samples is large, the weight is large, the water samples are not easy to carry, and the sampling period is long. The second is to pump the water sample at the designated position under water to a sampling ship or shore by a submersible pump for on-site filtration. Because the filtering device, the vacuum pump and various experimental devices are needed to filter suspended matters in the water body, the sampling site environment is severe, the experimental conditions are not provided, the operation is difficult, the filtering device filters slowly, a large amount of time is consumed for collecting enough suspended matters at a sampling point, and the method is impractical to finish the sample collection of all the sampling points on lakes and reservoirs with wide areas.
The invention is subsidized by the 'special basic item of national science fund apparatus-water source reservoir water quality multi-dimensional fidelity sampling equipment item (51327004)'.
Disclosure of Invention
Aiming at the defects in the prior art, the invention designs a suspended matter stirring, filtering, concentrating, collecting and controlling system and a suspended matter stirring, filtering, concentrating and collecting and controlling method.
The technical scheme of the invention is as follows:
the utility model provides a concentrated collection control system of suspended solid stirring filtration, includes monitoring platform and underwater measurement collection system two parts on water.
The overwater monitoring platform comprises a computer 1, a communication conversion module 2 and a power supply 3. The computer 1 carries a monitoring panel of the overwater monitoring platform, can monitor the depth, the turbidity, the real-time flow, the accumulated flow, the state of the water suction pump 6-1 and the state of the stirring motor 6-2 fed back by the underwater measurement acquisition device by observing a graphical interface, can complete the operations of configuring a serial port, setting start and stop conditions, storing data, exporting data and the like by clicking a relevant button, and sends a relevant instruction to the control unit 4-3 to control the motor module 6 of the underwater measurement acquisition device. The computer 1 is connected with the communication conversion module 2 through a USB interface, the communication conversion module 2 converts a USB communication protocol into an RS485 communication protocol so as to ensure the communication reliability and stability of the underwater measurement acquisition device in long distance and severe environment, and the communication conversion module 2 is connected with the underwater measurement acquisition device through a four-core tensile twisted-pair shielding cable. The power supply 3 is connected with the underwater measurement acquisition device through a four-core tensile twisted-pair shielding cable to supply power to power equipment such as the motor module 6.
The underwater measurement acquisition device comprises a waterproof sealed cabin 4, a data acquisition module 5 and a motor module 6, and the whole underwater measurement acquisition device is used as an execution mechanism of the system, acts according to an instruction sent by the overwater monitoring platform, and feeds back acquired sensor parameters and motor state signals. The main body of the waterproof sealed cabin 4 is a double-end-cover cylindrical barrel, the end covers are mounted at two ends of the barrel through 3O-shaped sealing rings and flange structures, and watertight bolt mounting holes and waterproof switch 4-1 mounting holes are reserved in the end covers; the waterproof sealed cabin 4 is internally provided with a waterproof switch 4-1, a logic power supply 4-2 and a control unit 4-3; the waterproof switch 4-1 is a waterproof and pressing type underwater button which is used as a main power switch of the underwater measurement and acquisition device, and the monostable trigger circuit controls the action of the relay to realize the opening and closing of the circuit; the logic power supply 4-2 supplies power to the control unit 4-3 and the data acquisition module 5 through an internal circuit; the control unit 4-3 takes an STC12C5A60S2 single-chip microcomputer as a core and is responsible for processing turbidity, depth and flow signals and transmitting the turbidity, depth and flow signals to the overwater monitoring platform. The data acquisition module 5 comprises a depth sensor 5-1, a turbidity sensor 5-2 and a flow sensor 5-3; the depth sensor 5-1 is used for detecting the lowering depth of the device, outputting a 0-5V voltage signal, connecting the voltage signal to the control unit 4-3 through a cable and a watertight bolt, feeding back a depth signal to the control unit 4-3, and meanwhile serving as a judgment basis for starting sampling action; the turbidity sensor 5-2 is arranged in the underwater measurement acquisition device and used for detecting the concentration of the concentrated and enriched sample, outputting a 4-20mA current signal, is connected to the control unit 4-3 through a cable and a watertight bolt, feeds back a turbidity signal to the control unit 4-3 and is used as a judgment basis for stopping sampling action; the flow sensor 5-3 outputs a pulse signal, is connected to the control unit 4-3 through a cable and a watertight bolt, feeds back the flow pulse signal to the control unit 4-3, obtains real-time flow and accumulated flow through internal program calculation of a single chip microcomputer, and is used as a judgment basis for the working state of the underwater measurement and collection device and calculates the in-situ concentration of the suspended matter sample. The motor module 6 comprises a water suction pump 6-1 and a stirring motor 6-2; the power lines and the signal lines of the water suction pump 6-1 and the stirring motor 6-2 are respectively connected to the control unit 4-3 through a waterproof cable and a watertight bolt, the control unit 4-3 outputs PWM signals, and the output power of the water suction pump 6-1 and the stirring motor 6-2 is controlled.
The overwater monitoring platform is connected with the underwater measurement acquisition device through a four-core tensile twisted-pair shielding cable 7, wherein two cores are power lines and are connected with a power supply 3 and a power supply control circuit of a control unit 4-3 to provide a power supply path for power equipment such as a motor module 6; the other two cores are signal wires which are twisted and shielded independently, and are connected with the communication conversion module 2 and the control unit 4-3, so that the effective communication between the computer 1 and the control unit 4-3 is realized; all cables and waterproof sealed cabin 4's connection all adopts the detachable to run through shutoff formula watertight bolt, when guaranteeing waterproof leakproofness, has detachability, and it is convenient to maintain.
The suspended matter stirring, filtering, concentrating and collecting method comprises the following steps:
step 1: initialization
After entering a preset sampling point, correctly connecting a computer 1 with a communication conversion module 2, the communication conversion module 2 with a waterproof sealed cabin 4, switching on a power supply 3, after confirming that the connection is correct, opening a monitoring panel carried on the computer 1, selecting a correct port, correctly filling parameters such as a sampling point, a sampling depth, a sample turbidity final value, a database name and the like, pressing a waterproof switch 4-1, clicking a 'start monitoring' button on the monitoring panel, and if the system is correctly connected, seeing depth, turbidity and flow information which are collected by a data collection module 5 and processed and uploaded by a control unit 4-3 and motor state information which is fed back to the control unit 4-3 by a motor module 6 and processed and uploaded by the control unit 4-3 on the monitoring panel of the computer 1;
step 2: down-lowering underwater measurement acquisition device
The underwater measurement acquisition device is placed at a proper speed by using a winch or manually, in the process of placing the underwater measurement acquisition device, the data acquisition module 5 continuously feeds back acquired real-time depth signals to the computer 1 after processing the real-time depth signals through the control unit 4-3, refreshes and displays the real-time depth signals on a monitoring panel on the computer 1, and stops placing the underwater measurement acquisition device when the underwater measurement acquisition device is placed at a preset sampling depth.
And 3, step 3: start of sampling
In order to ensure the stability of the underwater measurement and acquisition device when sampling is started, a short time delay is set in the computer 1 before sampling is started, after the time delay is finished, the computer 1 automatically sends a sampling starting instruction to the control unit 4-3, and after the control unit 4-3 receives the instruction, a PWM (pulse width modulation) signal is output to the motor module 6 through the control circuit and the cable, so that the water suction pump 6-1 and the stirring motor 6-2 are controlled to start to work.
And 4, step 4: regulating motor power
After sampling is started, a power configuration instruction can be sent to the control unit 4-3 by rotating the power knob of the water suction pump 6-1 and the power knob of the stirring motor 6-2 on the monitoring panel of the computer 1, and after the control unit 4-3 receives the instruction, the duty ratio of the PWM signal is adjusted to control the water suction pump 6-1 and the stirring motor 6-2 to change the output power so as to adjust the water suction rate and the stirring intensity. In the sampling process, the data acquisition module 5 continuously feeds back acquired real-time flow and accumulated flow signals to the computer 1 after processing and calculation through the control unit 4-3, refreshes and displays the signals on a monitoring panel of the computer 1 in real time, and adjusts the power of the water suction pump 6-1 and the stirring motor 6-2 by observing flow data so as to achieve the highest sampling efficiency.
And 5, step 5: end of sample
The data acquisition module 5 continuously feeds back the acquired sample turbidity signal to the computer 1 after processing the signal through the control unit 4-3, and refreshes and displays the signal on a monitoring panel of the computer 1 in real time, when the sample turbidity value reaches a preset sampling concentration, the computer 1 automatically judges and sends a sampling stopping instruction to the control unit 4-3, and after the control unit 4-3 receives the instruction, the PWM output signal is adjusted, and the water suction pump 6-1 and the stirring motor 6-2 are automatically closed. In addition, when an emergency occurs, the water pump 6-1 can be turned off by clicking a 'stop sampling' button at any time, after the button is clicked, the computer 1 sends a command for turning off the motor module 6 to the control unit 4-3, after the control unit 4-3 receives the command, the PWM signal output is adjusted, the water pump 6-1 and the stirring motor 6-2 are turned off, and the sampling action is stopped.
And 6, step 6: saving data
Every time sampling is completed, the key data of the sampling needs to be recorded and stored. After sampling is finished, the underwater measurement acquisition device is kept stable, when the computer 1 receives signals that the water suction pump 6-1 and the stirring motor 6-2 fed back by the control unit 4-3 are closed, a monitoring panel on the computer 1 can automatically pop up a 'data storage or not' dialog box, and after the computer 1 is clicked for determination, data such as sampling time, sampling place, sampling depth, sample turbidity, water collection amount, sampling duration and the like can be automatically stored in a database, and data can also be stored by clicking a 'data storage' button at any time. After the data is successfully stored, the monitoring panel of the computer 1 automatically pops up a prompt box of 'data storage is successful'. In addition, by clicking a 'export data' button, the data stored in the database can be exported to an excel template file, so that the subsequent data viewing and processing are facilitated.
And 7, step 7: recovery underwater measurement acquisition device and sample
After the data is successfully stored, the underwater measurement acquisition device is recovered through a winch or manually, and the uploaded depth signals acquired by the data acquisition module 5 and processed by the control unit 4-3 are observed while the underwater measurement acquisition device is recovered, so that the underwater measurement acquisition device is ensured to be safely and stably recovered. And after the underwater measurement acquisition device is taken out of the water surface, the monitoring panel of the computer 1 is closed, the waterproof switch 4-1 is pressed, the power supply of the underwater measurement acquisition device is closed, the sample is recovered, and the sampling is completed.
The invention has the beneficial effects that: according to the invention, the state monitoring of multiple parameter sensors such as depth, turbidity and flow is adopted, an effective control method is utilized to control the multiple motors to act cooperatively, the underwater in-situ filtration of the suspended matter sample in the water body can be realized, the fidelity is good, the efficiency is high, and the problems of low sampling efficiency, low precision, high operation strength and the like of the traditional suspended matter are solved; the invention can respectively serve as the starting condition and the ending condition of sampling according to the preset sampling depth and the final value of the sample concentration, and automatically complete the sampling process by combining the effective control of the stirring motor 6-2 and the water pump 6-1, thereby greatly improving the sampling efficiency and ensuring the effectiveness of the sample.
Drawings
FIG. 1 is an overall structure diagram of a suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 2 is a monitoring panel of the suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 3 is a main circuit diagram of a control unit 4-3 of the suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 4 is a circuit diagram of a control unit 4-3MCU of the suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 5 is a circuit diagram of a power module of a control unit 4-3 of the suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 6 is a circuit diagram of a communication module of a control unit 4-3 of the suspended matter stirring, filtering, concentrating and collecting control system;
FIG. 7 is a circuit diagram of a control unit 4-3 data acquisition module 5 of the suspended matter stirring, filtering, concentrating and acquiring control system;
FIG. 8 is a flow chart of the operation of a suspension concentrate collection method based on agitation filtration;
in the figure: 1, a computer; 2, a communication conversion module; 3, a power supply; 4 waterproof sealed cabin; 5, a data acquisition module; 6, a motor module; 7, a four-core tensile twisted-pair shielding cable; 4-1 waterproof switch; 4-2 logic power supply; 4-3 control unit; 5-1 depth sensor; 5-2 turbidity sensors; 5-3 flow sensors; 6-1 water pump; 6-2 stirring motor.
Detailed Description
The following is a detailed description of embodiments of the invention in conjunction with the technical solutions (and drawings).
A suspended matter stirring, filtering, concentrating and collecting control system comprises an overwater monitoring platform and an underwater measurement and collecting device.
The overwater monitoring platform comprises a computer 1, a communication conversion module 2 and a power supply 3. The computer 1 carries a monitoring panel of the overwater monitoring platform, can monitor the depth, turbidity, real-time flow, accumulated flow, the state of a water pump 6-1 and the state of a stirring motor 6-2 which are fed back by the underwater measurement acquisition device by observing a graphical interface, can complete operations such as serial port configuration, start and stop condition setting, data storage, data export and the like by clicking related buttons, and sends related instructions to the control unit 4-3 to control the motor module 6 of the underwater measurement acquisition device; the computer 1 is connected with the communication conversion module 2 through a USB interface, the communication conversion module 2 converts a USB communication protocol into an RS485 communication protocol so as to ensure the communication reliability and stability of the underwater and upper water measurement acquisition device in a long distance and severe environment, and the communication conversion module 2 is connected with the underwater measurement acquisition device through a four-core tensile twisted-pair shielded cable; the power supply 3 is connected with the underwater measurement acquisition device through a four-core tensile twisted-pair shielding cable to supply power to power equipment such as the motor module 6.
The underwater measurement acquisition device comprises a waterproof sealed cabin 4, a data acquisition module 5 and a motor module 6, and the whole underwater measurement acquisition device is used as an execution mechanism of the system, acts according to an instruction sent by the overwater monitoring platform, and feeds back acquired sensor parameters and motor state signals. The main body of the waterproof sealed cabin 4 is a double-end-cover cylindrical barrel, the end covers are mounted at two ends of the barrel through 3O-shaped sealing rings and flange structures, and watertight bolt mounting holes and waterproof switch 4-1 mounting holes are reserved in the end covers; the waterproof sealed cabin 4 is internally provided with a waterproof switch 4-1, a logic power supply 4-2 and a control unit 4-3; the waterproof switch 4-1 is a waterproof and pressing type underwater button which is used as a main power switch of the underwater measurement and acquisition device, and the monostable trigger circuit controls the action of the relay to realize the opening and closing of the circuit; the logic power supply 4-2 supplies power to the control unit 4-3 and the data acquisition module 5 through an internal circuit; the control unit 4-3 takes an STC12C5A60S2 single-chip microcomputer as a core and is responsible for processing turbidity, depth and flow signals and transmitting the turbidity, depth and flow signals to the overwater monitoring platform. The data acquisition module 5 comprises a depth sensor 5-1, a turbidity sensor 5-2 and a flow sensor 5-3; the depth sensor 5-1 is used for detecting the lowering depth of the device, outputting a 0-5V voltage signal, connecting the voltage signal to the control unit 4-3 through a cable and a watertight bolt, feeding back a depth signal to the control unit 4-3, and meanwhile serving as a judgment basis for starting sampling action; the turbidity sensor 5-2 is arranged in the underwater measurement acquisition device and used for detecting the concentration of the concentrated and enriched sample, outputting a 4-20mA current signal, is connected to the control unit 4-3 through a cable and a watertight bolt, feeds back a turbidity signal to the control unit 4-3 and is used as a judgment basis for stopping sampling action; the flow sensor 5-3 outputs a pulse signal, is connected to the control unit 4-3 through a cable and a watertight bolt, feeds back the flow pulse signal to the control unit 4-3, obtains real-time flow and accumulated flow through internal program calculation of a single chip microcomputer, and is used as a judgment basis for the working state of the underwater measurement and collection device and calculates the in-situ concentration of the suspended matter sample. The motor module 6 comprises a water suction pump 6-1 and a stirring motor 6-2; the power lines and the signal lines of the water suction pump 6-1 and the stirring motor 6-2 are respectively connected to the control unit 4-3 through a waterproof cable and a watertight bolt, the control unit 4-3 outputs PWM signals, and the output power of the water suction pump 6-1 and the stirring motor 6-2 is controlled.
The overwater monitoring platform is connected with the underwater measurement acquisition device through a four-core tensile double-twisted shielding cable, wherein two cores are power lines and are connected with a power supply 3 and a power supply control circuit of a control unit 4-3 to provide a power supply path for power equipment such as a motor module 6; the other two cores are signal wires which are twisted and shielded independently, and are connected with the communication conversion module 2 and the control unit 4-3, so that the effective communication between the computer 1 and the control unit 4-3 is realized; all cables and waterproof sealed cabin 4's connection all adopts the detachable to run through shutoff formula watertight bolt, when guaranteeing waterproof leakproofness, has detachability, and it is convenient to maintain.
The suspended matter concentration and collection method based on stirring and filtering comprises the following steps:
s801: initialization
After entering a preset sampling point, correctly connecting a computer 1 with a communication conversion module 2, the communication conversion module 2 with a waterproof sealed cabin 4, switching on a power supply 3, after confirming that the connection is correct, opening a monitoring panel carried on the computer 1, selecting a correct port, correctly filling parameters such as a sampling point, a sampling depth, a sample turbidity final value, a database name and the like, pressing a waterproof switch 4-1, clicking a 'start monitoring' button on the monitoring panel, and if the system is correctly connected, seeing depth, turbidity and flow information which are collected by a data collection module 5 and processed and uploaded by a control unit 4-3 and motor state information which is fed back to the control unit 4-3 by a motor module 6 and processed and uploaded by the control unit 4-3 on the monitoring panel of the computer 1;
s802: down-lowering underwater measurement acquisition device
The underwater measurement acquisition device is placed at a proper speed by using a winch or manually, in the process of placing the underwater measurement acquisition device, the data acquisition module 5 continuously feeds back acquired real-time depth signals to the computer 1 after processing the real-time depth signals through the control unit 4-3, refreshes and displays the real-time depth signals on a monitoring panel on the computer 1, and stops placing the underwater measurement acquisition device when the underwater measurement acquisition device is placed at a preset sampling depth.
S803: start of sampling
In order to ensure the stability of the underwater measurement and acquisition device when sampling is started, a short time delay is set in the computer 1 before sampling is started, after the time delay is finished, the computer 1 automatically sends a sampling starting instruction to the control unit 4-3, and after the control unit 4-3 receives the instruction, a PWM (pulse width modulation) signal is output to the motor module 6 through the control circuit and the cable, so that the water suction pump 6-1 and the stirring motor 6-2 are controlled to start to work.
S804: regulating motor power
After sampling is started, a power configuration instruction can be sent to the control unit 4-3 by rotating the power knob of the water suction pump 6-1 and the power knob of the stirring motor 6-2 on the monitoring panel of the computer 1, and after the control unit 4-3 receives the instruction, the duty ratio of the PWM signal is adjusted to control the water suction pump 6-1 and the stirring motor 6-2 to change the output power so as to adjust the water suction rate and the stirring intensity. In the sampling process, the data acquisition module 5 continuously feeds back acquired real-time flow and accumulated flow signals to the computer 1 after processing and calculation through the control unit 4-3, refreshes and displays the signals on a monitoring panel of the computer 1 in real time, and adjusts the power of the water suction pump 6-1 and the stirring motor 6-2 by observing flow data so as to achieve the highest sampling efficiency.
S805: end of sample
The data acquisition module 5 continuously feeds back the acquired sample turbidity signal to the computer 1 after processing the signal through the control unit 4-3, and refreshes and displays the signal on a monitoring panel of the computer 1 in real time, when the sample turbidity value reaches a preset sampling concentration, the computer 1 automatically judges and sends a sampling stopping instruction to the control unit 4-3, and after the control unit 4-3 receives the instruction, the PWM output signal is adjusted, and the water suction pump 6-1 and the stirring motor 6-2 are automatically closed. In addition, when an emergency occurs, the water pump 6-1 can be turned off by clicking a 'stop sampling' button at any time, after the button is clicked, the computer 1 sends a command for turning off the motor module 6 to the control unit 4-3, after the control unit 4-3 receives the command, the PWM signal output is adjusted, the water pump 6-1 and the stirring motor 6-2 are turned off, and the sampling action is stopped.
S806: saving data
Every time sampling is completed, the key data of the sampling needs to be recorded and stored. After sampling is finished, the underwater measurement acquisition device is kept stable, when the computer 1 receives signals that the water suction pump 6-1 and the stirring motor 6-2 fed back by the control unit 4-3 are closed, a monitoring panel on the computer 1 can automatically pop up a 'data storage or not' dialog box, and after the computer 1 is clicked for determination, data such as sampling time, sampling place, sampling depth, sample turbidity, water collection amount, sampling duration and the like can be automatically stored in a database, and data can also be stored by clicking a 'data storage' button at any time. After the data is successfully stored, the monitoring panel of the computer 1 automatically pops up a prompt box of 'data storage is successful'. In addition, by clicking a 'export data' button, the data stored in the database can be exported to an excel template file, so that the subsequent data viewing and processing are facilitated.
S807: recovery underwater measurement acquisition device and sample
After the data is successfully stored, the underwater measurement acquisition device is recovered through a winch or manually, and the uploaded depth signals acquired by the data acquisition module 5 and processed by the control unit 4-3 are observed while the underwater measurement acquisition device is recovered, so that the underwater measurement acquisition device is ensured to be safely and stably recovered. And after the underwater measurement acquisition device is taken out of the water surface, the monitoring panel of the computer 1 is closed, the waterproof switch 4-1 is pressed, the power supply of the underwater measurement acquisition device is closed, the sample is recovered, and the sampling is completed.
Finally, it should be noted that: although the present specification describes in detail specific configurations of the present invention with reference to specific embodiments, it should be understood by those skilled in the art that the present invention is not limited to the description of the above embodiments, and various modifications and substitutions can be made within the spirit of the present patent.
Claims (1)
1. A suspended matter stirring, filtering, concentrating and collecting control method is characterized in that the method is realized based on a control system, wherein the control system comprises an overwater monitoring platform and an underwater measurement and collection device which are connected through a cable;
the water monitoring platform comprises a computer (1), a communication conversion module (2) and a power supply (3); the system comprises a computer (1), an underwater monitoring platform, a water level monitoring system and a water level monitoring system, wherein the computer (1) carries a monitoring panel of the water level monitoring platform and monitors the depth, the turbidity, the real-time flow, the accumulated flow, the state of a water suction pump (6-1) and the state of a stirring motor (6-2); the computer (1) is connected with the communication conversion module (2), and the communication conversion module (2) is connected with the underwater measurement acquisition device; the power supply (3) is connected with the underwater measurement acquisition device and supplies power to the equipment;
the underwater measurement acquisition device comprises a waterproof sealed cabin (4), a data acquisition module (5) and a motor module (6), acts according to an instruction sent by the above-water monitoring platform, and feeds back acquired sensor parameters and motor state signals; the main body of the waterproof sealed cabin (4) is a double-end-cover cylindrical barrel, the end covers are mounted to the two ends of the barrel through O-shaped sealing rings and flange structures, and watertight bolt mounting holes and waterproof switch (4-1) mounting holes are reserved in the end covers; a waterproof switch (4-1), a logic power supply (4-2) and a control unit (4-3) are arranged in the waterproof sealed cabin (4); the waterproof switch (4-1) is a waterproof and pressing type underwater button and is used as a main power switch of the underwater measurement acquisition device; the logic power supply (4-2) supplies power to the control unit (4-3) and the data acquisition module (5); the control unit (4-3) processes turbidity, depth and flow signals and transmits the signals to the water monitoring platform; the data acquisition module (5) comprises a depth sensor (5-1), a turbidity sensor (5-2) and a flow sensor (5-3); the depth sensor (5-1) is used for detecting the lowering depth of the device, feeding back a depth signal to the control unit (4-3) and simultaneously serving as a judgment basis for starting sampling action; the turbidity sensor (5-2) is used for detecting the concentration of the concentrated and enriched sample, feeding a turbidity signal back to the control unit (4-3) and simultaneously serving as a judgment basis for stopping the sampling action; the flow sensor (5-3) feeds back a flow pulse signal to the control unit (4-3), calculates to obtain real-time flow and accumulated flow, and simultaneously serves as a judgment basis for the working state of the underwater measurement and acquisition device and calculates the in-situ concentration of the suspended matter sample; the motor module (6) comprises a water suction pump (6-1) and a stirring motor (6-2), and the control unit (4-3) controls the output power of the water suction pump (6-1) and the stirring motor (6-2);
the control method comprises the following steps:
step 1: initialization
After entering a preset sampling point, correctly connecting a computer (1) with a communication conversion module (2), the communication conversion module (2) with a waterproof sealed cabin (4), switching on a power supply (3), after confirming that the connection is correct, opening a monitoring panel carried on the computer (1), selecting a correct port, correctly filling in each parameter, pressing a waterproof switch (4-1), clicking a 'start monitoring' button on the monitoring panel, and enabling the monitoring panel of the computer (1) to see depth, turbidity and flow information which are acquired by a data acquisition module (5) and uploaded by a control unit (4-3) and motor state information which is fed back to the control unit (4-3) by a motor module (6) and uploaded by the control unit (4-3);
step 2: down-lowering underwater measurement acquisition device
The underwater measurement acquisition device is lowered, in the process of lowering the underwater measurement acquisition device, the data acquisition module (5) processes the acquired real-time depth signal through the control unit (4-3) and then feeds the processed real-time depth signal back to the computer (1), and when the underwater measurement acquisition device is lowered to a preset sampling depth, lowering is stopped;
and 3, step 3: start of sampling
In order to ensure the stability of the underwater measurement and acquisition device at the beginning of sampling, a short time delay is set in the computer (1) before the sampling is started, after the time delay is finished, the computer (1) automatically sends a sampling starting instruction to the control unit (4-3), and after the control unit (4-3) receives the instruction, the control unit controls the water suction pump (6-1) and the stirring motor (6-2) to start sampling;
and 4, step 4: regulating motor power
In the sampling process, the output power of the water suction pump (6-1) and the output power of the stirring motor (6-2) are controlled through the control unit (4-3), and the water suction speed and the stirring intensity are adjusted; in the sampling process, the data acquisition module (5) continuously feeds back acquired real-time flow and accumulated flow signals to the computer (1) after processing and calculating through the control unit (4-3), refreshes and displays the signals on a monitoring panel of the computer (1) in real time, and adjusts the power of the water suction pump (6-1) and the stirring motor (6-2) by observing flow data to achieve the highest sampling efficiency;
and 5, step 5: end of sample
The data acquisition module (5) continuously feeds back acquired sample turbidity signals to the computer (1) after the acquired sample turbidity signals are processed by the control unit (4-3), the samples are refreshed and displayed on a monitoring panel of the computer (1) in real time, when the sample turbidity values reach preset sampling concentration, the computer (1) automatically judges and sends a sampling stopping instruction to the control unit (4-3), and after the control unit (4-3) receives the instruction, the water suction pump (6-1) and the stirring motor (6-2) are automatically closed; if the method is adopted; when an emergency occurs, the water pump (6-1) is closed by clicking a 'stop sampling' button, and the sampling action is stopped;
and 6, step 6: saving data
Recording and storing the data sampled at this time every time sampling is completed; and recovering the underwater measurement acquisition device.
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