CN117268852A - Sampling system and control method thereof - Google Patents
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- CN117268852A CN117268852A CN202311240552.5A CN202311240552A CN117268852A CN 117268852 A CN117268852 A CN 117268852A CN 202311240552 A CN202311240552 A CN 202311240552A CN 117268852 A CN117268852 A CN 117268852A
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- 238000005070 sampling Methods 0.000 title claims abstract description 208
- 238000000034 method Methods 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 239000013049 sediment Substances 0.000 claims abstract description 84
- 239000011148 porous material Substances 0.000 claims abstract description 80
- 239000013618 particulate matter Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 33
- 230000003204 osmotic effect Effects 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 29
- 230000035515 penetration Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 26
- 239000002699 waste material Substances 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 238000011065 in-situ storage Methods 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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Abstract
The invention discloses a sampling system and a control method thereof, and relates to the technical field of deep sea sampling; the system comprises a sampling device, wherein the sampling device comprises an overlying water particulate matter space sequence sampling system, a sediment pore water time sequence sampling system and a sediment pore water space sequence sampling system; the lower computer control unit can provide power for the sampling device and control the work of each sampling system of the sampling device; the upper computer control unit is electrically connected with the lower computer control unit and can perform data transmission with the lower computer control unit. The sampling system provided by the invention can safely and independently complete overlying water particulate matter space sequence sampling, sediment pore water time sequence sampling and sediment pore water space sequence sampling by matching with a control method of the sampling system.
Description
Technical Field
The invention relates to the technical field of deep sea sampling, in particular to a sampling system and a control method thereof.
Background
Cold spring activity areas are typical areas of the extreme environment of the ocean and are also hot spots of current earth science research. The overlying water particles of the cold spring nozzle contain information such as fluid evolution, key component bio-geochemical circulation, substance and energy exchange of the seabed and seawater, and the like, while sediment pore water contains a large amount of geochemical information, and the formation and ablation of seabed natural gas hydrate can be predicted by analyzing the ion concentration in the cold spring area pore water. Therefore, accurate observation and composition analysis of overlying water particulate matter and sediment pore water of cold spring spouts is of great significance for research of marine substance transportation, water body element characteristics, marine geochemical and biological systems, environmental protection and human health.
In the technical field of sediment pore water sampling, the existing in-situ sediment pore water sampling system has a plurality of problems and defects. When the sampling device is applied to a deep sea cold spring active area, the sampling device is extremely easy to have the problems of heat preservation, pressure maintaining, failure and the like due to complex operation environment. In terms of a sampling method and sampling performance, the current sampling device cannot simultaneously consider specific index requirements such as sampling time, sampling space and the like, and sediment pore water time sequence sampling and sediment pore water space sequence sampling are difficult to realize. In the technical field of overlying water particle sampling, means for collecting overlying water and particles of a cold spring nozzle are still lacking at present, and spatial sequence sampling of the overlying water particles is difficult to realize, so that the requirements of deep sea bioelectrochemistry research cannot be met.
Therefore, it is necessary to research a sampling system for overlying water particles and sediment pore water of a cold spring nozzle and a control method thereof, so that the system can safely and autonomously complete the functions of overlying water particle space sequence sampling, sediment pore water time sequence sampling, sediment pore water space sequence sampling and the like.
Disclosure of Invention
The invention aims to provide a sampling system and a control method thereof, which are used for solving the problems in the prior art and safely and autonomously completing overlying water particulate matter space sequence sampling, sediment pore water time sequence sampling and sediment pore water space sequence sampling.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a sampling system, which comprises a sampling device, wherein the sampling device comprises an overlying water particulate matter space sequence sampling system, a sediment pore water time sequence sampling system and a sediment pore water space sequence sampling system; the lower computer control unit can provide power for the sampling device and control the work of each sampling system of the sampling device; the upper computer control unit is electrically connected with the lower computer control unit and can perform data transmission with the lower computer control unit.
Optionally, the sampling device further comprises a mounting frame, six layers are arranged on the mounting frame from top to bottom, the lower computer control unit is mounted on the bottommost layer of the mounting frame, a group of overlying water particulate matter space sequence sampling systems are mounted on each layer except the bottommost layer of the mounting frame, the sediment pore water time sequence sampling systems are mounted on the left side of the mounting frame, and the sediment pore water space sequence sampling systems are mounted on the right side of the mounting frame; the distances from five layers above the mounting frame to the bottommost layer are respectively 0.5m, 1m, 1.5m, 2m and 2.5m; the mounting bracket top is provided with the lug for the installation and the hanging of equipment.
Optionally, the overlying water particulate matter space sequence sampling system comprises a water collecting bag, a filtering container, a water inlet heating device, a gear pump, a reversing valve and an electronic cabin which are respectively sealed in different waterproof sealing cabins; the water inlet heating device comprises a heating plate and a temperature sensor, wherein the heating plate is preferably a PTC heating plate, and a power line and a control line of the heating plate and the temperature sensor are connected to corresponding watertight connectors; the control line and the power line of the gear pump are connected to the corresponding water-tight connector; the reversing valve comprises a push rod motor, and a control wire and a power wire of the push rod motor are connected to the corresponding watertight connector; the electronic cabin comprises a controller and a relay control module, wherein the controller is an STM32 controller, one watertight connector corresponding to one side of the electronic cabin is connected to a watertight connector of a lower computer control unit through watertight cables, and three watertight connectors corresponding to the other side of the electronic cabin are respectively connected to corresponding watertight connectors of the water inlet heating device, the gear pump and the reversing valve through watertight cables.
Optionally, the sediment pore water time series sampling system comprises a gravity penetration control device and an osmotic pump sampling control device; the gravity penetration control device comprises a gravity distribution cover, a fixed connecting plate is fixedly sleeved on the outer wall of the gravity distribution cover, a flow control outlet is formed in the side wall below the gravity distribution cover, a penetration release oil cylinder is mounted on the fixed connecting plate, an oil cylinder rod of the penetration release oil cylinder is connected with a telescopic support guide rod, and the telescopic support guide rod can penetrate through an opening in the side wall of the gravity distribution cover and is connected with the osmotic pump sampling control device in a clamping mode; the penetration release oil cylinder is electrically connected with a penetration release oil cylinder control switch; the osmotic pump sampling control device comprises an osmotic pump, the bottom of the osmotic pump is connected with a sampling pipeline, a filter block is arranged in the sampling pipeline close to the outlet of the pipeline at the bottom, a plurality of capillary ducts which are transversely arranged are connected to the side wall of the sampling pipeline close to one end of the osmotic pump, and the osmotic pump is electrically connected with an electromagnetic control valve of the osmotic pump; and the power line and the control line penetrating the release oil cylinder control switch and the osmotic pump electromagnetic control valve are connected with the lower computer control unit through corresponding watertight connectors and watertight cables.
Optionally, the sediment pore water space sequence sampling system comprises an oil cylinder penetration control device and an oil cylinder sampling control device; the oil cylinder penetration control device system comprises a sliding rail which is vertically arranged, a sliding plate is connected to the sliding rail in a sliding way, the oil cylinder sampling control device is fixed on the sliding plate, pulley blocks are symmetrically arranged at the upper end and the lower end of the sliding rail, the pulley blocks are in transmission connection through sliding ropes, the sliding plate is connected with movable pulleys of the pulley blocks, and one end of each sliding rope is connected with a driving oil cylinder; the oil cylinder sampling control device comprises a vertically arranged filter element integrated inserted link; the filter element integrated inserting rod is integrated with a plurality of micron-sized filter joints, a filter element is inserted into each interval of 2cm in the interval of 0-0.5m above the filter element integrated inserting rod, a filter element is inserted into each interval of 5cm in the interval of 0.5-2m, different liquid outlets are corresponding to the filter elements with different heights, the liquid outlets are connected to a waste liquid isolation check valve through connecting pipes, the waste liquid isolation check valve is arranged at a water inlet of a waste liquid cylinder, a piston and a connecting rod are arranged in the waste liquid cylinder, one end of the connecting rod is connected with the piston, the other end of the connecting rod is connected to a power cylinder, and the waste liquid cylinder and the power cylinder are arranged on the sliding plate.
Optionally, the lower computer control unit comprises a controller, a communication module and a battery module; the controller is used for indirectly controlling the operation of five groups of overlying water particulate matter space sequence sampling systems and directly controlling the operation of one group of sediment pore water time sequence sampling systems and one group of sediment pore water space sequence sampling systems; the communication module is used for carrying out data communication between the lower computer control unit and the upper computer control unit, and the battery module is used for providing power for the whole system.
Optionally, the upper computer control unit comprises a PC, a communication module and a user control interface, and the communication module is an RS485 communication module; the PC is used for operating the user control interface, one end of the communication module is connected to the PC, the other end of the communication module is connected to the lower computer control unit through the watertight connector and the watertight cable, and communication data are established between the lower computer control unit and the upper computer control unit.
The invention also provides a control method of the sampling system, which comprises a water-coated particulate matter spatial sequence sampling process; the overlying water particulate matter spatial sequence sampling process comprises the following steps:
step A: before the upper water-covered particulate matter space sequence sampling system works, detecting and adjusting the temperature of the oil bath, feeding back the monitored temperature sensor data to the lower computer control unit, and then transmitting the monitored temperature sensor data to the upper computer control unit;
and (B) step (B): an operator gives a sampling instruction, a gear pump is controlled by a relay module to pump the overlying water and the particles into a water inlet heating device, and the overlying water and the particles flow to a reversing valve after being heated by an oil bath; the push rod motor in the reversing valve is used for pushing the movable shaft core to axially move, so that a liquid path switching function is realized; the initial position of the push rod motor is in an extending state, the shaft core interface is aligned with the switching interface A, and the water collecting bag starts to collect the overlying water and the particles, so that the in-situ preservation function of the overlying water and the particles is realized;
step C: an operator issues a switching instruction to control the push rod motor to shrink, the valve core interface is aligned to the switching interface B, the liquid path is switched, the overlying water and the particles flow into the filtering container, the filter membrane filters out the particles and entraps the particles at the front end of the filter membrane, and the overlying water is stored in the water tank through the filter membrane, so that the in-situ separation function of the overlying water and the particles is realized.
Optionally, the method further comprises a sediment pore water time series sampling process, wherein the sediment pore water time series sampling process comprises the following steps of:
step D: before the sediment pore water time sequence sampling system works, the penetration release oil cylinder is used for controlling the extension of the telescopic support guide rod, and the osmotic pump sampling control device is clamped on the fixed connecting plate;
step E: when an operator gives an instruction, the penetration release oil cylinder is controlled by the penetration release oil cylinder control switch to retract the telescopic support guide rod, the osmotic pump sampling control device penetrates into sediment under the action of gravity after losing support, and the sampling device is completely deployed;
step F: after receiving the sampling instruction, controlling the osmotic pump to start working through an electromagnetic control valve of the osmotic pump; the osmotic pump can generate continuous and stable sampling power, sediment pore water in different time periods is stored in different sections of the same capillary guide pipe after being filtered by the filter block, and when a sample needs to be transferred, the sampling power is converted according to the length of the capillary guide pipe, so that the sediment pore water time sequence sampling function is realized.
Optionally, the method further comprises a sediment pore water space sequence sampling process, wherein the sediment pore water space sequence sampling process comprises the following steps of:
step G: before the sediment pore water space sequence sampling system works, a push rod of a driving oil cylinder is in a contracted state, the position of a movable pulley in a pulley block is raised, and an oil cylinder sampling control device is pulled up by a sliding rope;
step H: when an operator gives an instruction, controlling a push rod of a driving oil cylinder to start to extend, gradually lowering the position of a movable pulley in a pulley block, and enabling an oil cylinder sampling control device to penetrate into sediment under the action of gravity, so that the sampling device is completely deployed;
step I: after receiving the sampling instruction, controlling the power cylinder to move, driving the piston to move by the power cylinder through the connecting rod, generating continuous and stable sampling power by the waste liquid cylinder, storing sediment pore water with different heights in connecting pipes with different serial numbers after passing through the filter element, and distinguishing according to the serial numbers of the connecting pipes when the sample needs to be transferred, thereby realizing the sediment pore water space sequence sampling function.
Compared with the prior art, the invention has the following technical effects:
(1) The device can collect overlying water and particulate matters at the positions 0.5m, 1m, 1.5m, 2m and 2.5m above the cold spring nozzle according to the space, and perform in-situ preservation and in-situ separation. Realizing the space sequence sampling function of the overlying water particulate matters.
(2) The device can collect pore water at the position of 0.5m of sediment depth according to time, and realize the sediment pore water time sequence sampling function.
(3) The device can collect pore water at the same time according to the depth interval of 2cm in the interval of 0-0.5m of the sediment depth, and collect pore water at the same time according to the depth interval of 5cm in the interval of 0.5-2m of the sediment depth, so as to realize the sampling function of the sediment pore water space sequence.
(4) The control system of the device can accurately and efficiently control the sampling device, the designed user operation interface is concise and visual, various key parameters in the working process of the system are displayed, and operators can be assisted to rapidly complete the arrangement and sampling of the whole system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram showing the overall structure of the present invention;
FIG. 2 is a schematic diagram of a spatial sequence sampling system for water-over particles according to the present invention;
FIG. 3 is a schematic diagram of a sediment pore water time series sampling system structure of the present invention;
FIG. 4 is a schematic diagram of a sediment pore water space sequence sampling system according to the present invention;
reference numerals illustrate: 1. the device comprises a mounting frame, 2 parts of an overlying water particulate matter space sequence sampling system, 2-1 parts of a water inlet heating device, 2-2 parts of a gear pump, 2-3 parts of a reversing valve, 2-4 parts of a water collecting bag, 2-5 parts of a filtering container, 2-6 parts of an electronic cabin, 3 parts of a sediment pore water time sequence sampling system, 3-1 parts of a fixed connecting plate, 3-2 parts of a gravity distribution cover, 3-3 parts of a flow control outlet, 3-4 parts of a telescopic supporting guide rod, 3-5 parts of a penetrating release cylinder, 3-6 parts of a penetrating release cylinder control switch, 3-7 parts of a filtering block, 3-8 parts of a capillary tube, 3-9 parts of a penetrating pump, 4 parts of a sediment pore water space sequence sampling system, 4-1 parts of a sliding rail, 4-2 parts of a sliding plate, 4-3 parts of a pulley block, 4-4 parts of a sliding rope, 4-5 parts of a driving cylinder, 4-6 parts of a filter element integrated inserting rod, 4-7 parts of a connecting guide tube, 4-8 parts of a waste liquid isolation one-way valve, 4-9 parts of a cylinder, 4-10 parts of a power cylinder, 5 parts of a lower computer control unit and an upper computer control unit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a sampling system and a control method thereof, which are used for solving the problems in the prior art and safely and autonomously completing overlying water particulate matter space sequence sampling, sediment pore water time sequence sampling and sediment pore water space sequence sampling.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the present invention provides a sampling system, which includes a sampling device, a lower computer control unit 5, and an upper computer control unit 6. The sampling device comprises a mounting frame 1, an overlying water particulate matter space sequence sampling system 2, a sediment pore water time sequence sampling system 3 and a sediment pore water space sequence sampling system 4.
As shown in fig. 1, the installation frame 1 is divided into six layers, and distances from five layers above to the bottom layer are respectively 0.5m, 1m, 1.5m, 2m and 2.5m, and are used for installing corresponding equipment, and lifting lugs are designed at the top and are used for installing and hanging the equipment. The lower computer control unit 5 is arranged at the bottom layer of the mounting frame 1 and is used for providing power for the whole system and controlling the work of the whole system. The space sequence sampling system 2 for the overlying water particles is divided into five groups, the five groups are respectively arranged on the upper five layers of the mounting frame 1, the distances from the bottom are respectively 0.5m, 1m, 1.5m, 2m and 2.5m, the five sampling systems collect the overlying water and the particles according to the space sequence, and the in-situ preservation and in-situ filtration of the overlying water and the particles can be realized in the device. A sediment pore water time series sampling system 3 is installed at the left side of the mounting frame 1, and pore water can be collected at a sediment depth of 0.5m according to time series. The sediment pore water space sequence sampling system 4 is arranged on the right side of the mounting frame 1, and pore water can be collected at depth intervals of 2cm in the interval of 0-0.5m of sediment depth; pore water was collected at 5cm depth intervals over the interval of 0.5-2m of sediment depth.
As shown in FIG. 2, the overlying water particulate matter space sequence sampling system 2 comprises a water inlet heating device 2-1, a gear pump 2-2, a reversing valve 2-3, a water collecting bag 2-4, a filtering container 2-5 and an electronic cabin 2-6.
As shown in fig. 2, the water inlet heating device 2-1 is packaged in a waterproof sealed cabin, the inside of the waterproof sealed cabin comprises a PTC heating plate and a temperature sensor, and a power line and a control line of the PTC heating plate and the temperature sensor are connected to a water-tight connector. The gear pump 2-2 is enclosed in a watertight compartment, with control and power lines connected to the watertight connector. The reversing valve 2-3 is enclosed in a watertight compartment, and internally comprises a push rod motor, the control and power wires of which are connected to the watertight plug. The electronic cabin 2-6 is packaged in the waterproof sealing cabin, and the inside of the electronic cabin comprises an STM32 controller and a relay control module. One watertight connector on one side of the electronic cabin 2-6 is connected to the watertight connector of the lower computer control unit 5 through watertight cables, so that data communication between the STM32 controllers is realized. The three watertight connectors on the other side of the electronic cabin are connected to watertight connectors of the water inlet heating device 2-1, the gear pump 2-2 and the reversing valve 2-3 through watertight cables, so that control of the PTC heating piece, the gear pump 2-2 and the push rod motor and monitoring of the temperature sensor are realized.
As shown in fig. 3, the sediment pore water time series sampling system 3 comprises a gravity penetration control device and an osmotic pump sampling control device. The gravity penetration control device comprises a fixed connecting plate 3-1, a gravity distribution cover 3-2, a flow control outlet 3-3, a telescopic support guide rod 3-4, a penetration release cylinder 3-5 and a penetration release cylinder control switch 3-6. The osmotic pump sampling control device comprises a filter block 3-7, a capillary conduit 3-8, an osmotic pump 3-9 and an electromagnetic control valve of the osmotic pump. The power lines and the control lines penetrating the release oil cylinder control switches 3-6 and the osmotic pump electromagnetic control valve are connected to an STM32 controller in the lower computer control unit 5 through watertight connectors and watertight cables, so that the distribution and sampling control of the system are realized.
As shown in fig. 4, the sediment pore water space sequence sampling system 4 comprises a cylinder penetration control device and a cylinder sampling control device. The oil cylinder penetration control device system comprises a sliding rail 4-1, a sliding plate 4-2, a pulley block 4-3, a sliding rope 4-4 and a driving oil cylinder 4-5. The oil cylinder sampling control device is fixed on a sliding plate 4-2, the sliding plate 4-2 can slide on a sliding rail 4-1, and a filter element integrated inserted link 4-6 in the oil cylinder sampling control device is controlled to penetrate into sediment through a driving oil cylinder 4-5, a pulley block 4-3 and a sliding rope 4-4. The oil cylinder sampling control device comprises a filter element integrated inserted link 4-6, a connecting conduit 4-7, a waste liquid isolation one-way valve 4-8, a waste liquid cylinder 4-9 and a power oil cylinder 4-10. The filter element integrated inserted link 4-6 is integrated with a plurality of micron-sized filter joints, a filter element is inserted into the inserted link at intervals of 2cm above the inserted link within the interval of 0-0.5m, a filter element is inserted into the inserted link at intervals of 5cm within the interval of 0.5-2m, and the filter elements with different heights correspond to different liquid outlets. The liquid outlet is connected to the waste liquid isolation check valve 4-8 through the connecting conduit 4-7, and the waste liquid isolation check valve 4-8 is arranged at the water inlet of the waste liquid cylinder 4-9 to prevent the waste liquid from flowing back to the connecting conduit 4-7 to pollute the sample. The waste liquid cylinder 4-9 is internally provided with a piston and a connecting rod, one end of the connecting rod is connected with the piston, and the other end is connected to the power cylinder 4-10. The system comprises a plurality of power cylinders 4-10, wherein each power cylinder 4-10 can control a plurality of connecting rods, so as to control a plurality of waste liquid cylinders 4-9 and connecting pipes 4-7 to sample. The power lines and the control lines of the driving oil cylinder 4-5 and the power oil cylinder 4-10 are connected to an STM32 controller in a lower computer control unit through watertight connectors and watertight cables, so that the arrangement and sampling control of the system are realized.
As shown in FIG. 1, the lower computer control unit 5 comprises an STM32 controller, an RS485 communication module and a battery module. The STM32 controller is used for indirectly controlling the operation of the five groups of overlying water particulate matter space sequence sampling systems 2 and directly controlling the operation of one group of sediment pore water time sequence sampling systems 3 and one group of sediment pore water space sequence sampling systems 4. The RS485 communication module is used for carrying out data communication between the lower computer control unit 5 and the upper computer control unit 6, and the battery module is used for providing power for the whole system. The upper computer control unit 6 comprises a PC, an RS485 communication module and a user control interface. The PC is used for running the user control interface. One end of the RS485 communication module is connected to the PC, the other end is connected to the lower computer control unit through the watertight connector and watertight cable, and communication data are established between the lower computer control unit 5 and the upper computer control unit 6. The user control interface comprises an RS485 communication control assembly, a PTC heating plate control assembly, a gear pump control assembly, a push rod motor control assembly, a penetration release oil cylinder control assembly, a permeation pump electromagnetic valve control assembly, a driving oil cylinder control assembly and a power oil cylinder control assembly.
The control method of the sampling system is used for realizing overlying water particulate matter space sequence sampling, sediment pore water time sequence sampling and sediment pore water space sequence sampling. The control method comprises the following steps:
1. the water-coated particulate matter spatial sequence sampling process; 2. a sediment pore water time sequence sampling process; 3. and (5) a sediment pore water space sequence sampling process.
The first process, namely the overlying water particulate matter space sequence sampling process, specifically comprises the following steps:
step A: before the water-coated particulate matter space sequence sampling system 2 works, an STM32 controller in the electronic cabin 2-6 can monitor the temperature of the oil bath through a temperature sensor, and when the temperature is not in a standard range, the PTC heating plate is controlled to work through a relay module. The sampling system realizes temperature closed-loop control through the STM32 controller, the PTC heating plate and the temperature sensor, and when the STM32 controller detects that the temperature of the oil bath is higher than an upper threshold value through the temperature sensor, the PTC heating plate is controlled to stop working through the relay control module, so that cooling operation is realized; when the STM32 controller detects that the temperature is lower than the lower threshold value through the temperature sensor, the relay control module controls the PTC heating plate to start working, and heating operation is achieved. The STM32 controller feeds back the monitored temperature sensor data to the STM32 controller, and the STM32 controller transmits the monitored temperature sensor data to the upper computer control unit 6 through the RS485 communication module.
And (B) step (B): after an operator issues a sampling instruction, the PC transmits the sampling instruction to an STM32 controller in the lower computer control unit 5 through the RS485 communication module, and the STM32 controller transmits the sampling instruction to the STM32 controllers in the electronic cabins 2-6. After the STM32 controller receives the sampling instruction, the gear pump 2-2 is controlled by the relay module to pump the overlying water and the particulate matters into the water inlet heating device 2-1, and the overlying water and the particulate matters flow to the reversing valve 2-3 after being heated by the oil bath. The push rod motor in the reversing valve is used for pushing the axial movement of the axial core, so that the liquid path switching function is realized. The initial position of the push rod motor is in an extending state, the shaft core interface is aligned with the switching interface A, and the water collecting bags 2-4 begin to collect the overlying water and the particulate matters, so that the in-situ preservation function of the overlying water and the particulate matters is realized.
Step C: when the STM32 controller receives the switching instruction, the push rod motor is controlled to shrink, the valve core interface is aligned to the switching interface B, the liquid path is switched, the overlying water and the particles flow into the filter container 2-5, the filter membrane filters out the particles and entraps the particles at the front end of the filter membrane, and the overlying water is stored in the water tank through the filter membrane, so that the in-situ separation function of the overlying water and the particles is realized.
The second process, namely a sediment pore water time sequence sampling process, specifically comprises the following steps:
step D: before the sediment pore water time sequence sampling system 3 works, the penetrating release oil cylinder 3-5 is used for controlling the extension of the telescopic support guide rod 3-4, and the sampling system is clamped on the fixed connecting plate 3-1.
Step E: after an operator gives an instruction, the PC transmits the sampling instruction to an STM32 controller in the lower computer control unit 5 through the RS485 communication module. When the STM32 controller receives the distribution instruction, the penetration release oil cylinder 3-5 is controlled to retract the telescopic support guide rod 3-4 through the penetration release oil cylinder control switch 3-6, the sampling device penetrates into sediment under the action of gravity after losing support, and due to the existence of the flow control outlet 3-3, the seawater in the release cover cannot be immediately discharged in the process of penetrating into the sediment, so that the seawater in the gravity distribution cover 3-2 generates upward reaction force on the sampling device, the sampling device can stably penetrate into the sediment, and the distribution of the sampling device is completed.
Step F: and when the STM32 controller receives the sampling instruction, the osmotic pump 3-9 is controlled to start working through an electromagnetic control valve of the osmotic pump. The osmotic pump 3-9 can generate continuous and stable sampling power in a period of time, sediment pore water in different periods of time is filtered by the filter block 3-7 and then stored in different sections of the same capillary conduit 3-8, and when a sample needs to be transferred, the sampling power can be converted according to the length of the capillary conduit 3-8, so that the sediment pore water time sequence sampling function is realized.
The third process, namely a sediment pore water space sequence sampling process, specifically comprises the following steps:
step G: before the sediment pore water space sequence sampling system 4 works, the push rod of the driving oil cylinder 4-5 is in a contracted state, the position of the movable pulley in the pulley block 4-3 is increased, and the sampling device is pulled up by the sliding rope 4-4.
Step H: after an operator gives an instruction, the PC transmits the sampling instruction to an STM32 controller in the lower computer control unit through the RS485 communication module. When the STM32 controller receives the deployment instruction, the push rod of the driving oil cylinder 4-5 is controlled to extend, the position of the movable pulley in the pulley block 4-3 is gradually lowered, the sampling device pulled by the sliding rope 4-4 penetrates into sediment under the action of gravity, and the deployment of the sampling device is completed.
Step I: when the STM32 controller receives a sampling instruction, the power cylinder 4-10 is controlled to move, the power cylinder 4-10 drives the piston to move through the connecting rod, the waste liquid cylinder 4-9 can generate continuous and stable sampling power, sediment pore water with different heights passes through the filter element and is stored in the connecting guide pipe 4-7 with different serial numbers, and when the sample needs to be transferred, the sediment pore water is distinguished according to the serial numbers of the connecting guide pipe 4-7, so that the sediment pore water space sequence sampling function is realized.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. A sampling system, characterized by: the device comprises a sampling device, wherein the sampling device comprises an overlying water particulate matter space sequence sampling system, a sediment pore water time sequence sampling system and a sediment pore water space sequence sampling system;
the lower computer control unit can provide power for the sampling device and control the work of each sampling system of the sampling device;
the upper computer control unit is electrically connected with the lower computer control unit and can perform data transmission with the lower computer control unit.
2. The sampling system of claim 1, wherein: the sampling device further comprises a mounting frame, six layers are arranged on the mounting frame from top to bottom, the lower computer control unit is arranged on the bottommost layer of the mounting frame, a group of overlying water particulate matter space sequence sampling systems are arranged on each layer of the mounting frame except the bottommost layer, the sediment pore water time sequence sampling systems are arranged on the left side of the mounting frame, and the sediment pore water space sequence sampling systems are arranged on the right side of the mounting frame; the distances from five layers above the mounting frame to the bottommost layer are respectively 0.5m, 1m, 1.5m, 2m and 2.5m; and a lifting lug is arranged at the top of the mounting frame.
3. The sampling system of claim 1, wherein: the overlying water particulate matter space sequence sampling system comprises a water collecting bag, a filtering container, a water inlet heating device, a gear pump, a reversing valve and an electronic cabin, wherein the water inlet heating device, the gear pump, the reversing valve and the electronic cabin are respectively packaged in different waterproof sealing cabins; the water inlet heating device comprises a heating plate and a temperature sensor, wherein a power line and a control line of the heating plate and the temperature sensor are connected to corresponding watertight connectors; the control line and the power line of the gear pump are connected to the corresponding water-tight connector; the reversing valve comprises a push rod motor, and a control wire and a power wire of the push rod motor are connected to the corresponding watertight connector; the electronic cabin comprises a water-tight connector corresponding to one side of the electronic cabin, a water-tight connector corresponding to the other side of the electronic cabin is connected to the water-tight connector of the lower computer control unit through a water-tight cable, and three water-tight connectors corresponding to the other side of the electronic cabin are respectively connected to the corresponding water-tight connectors of the water inlet heating device, the gear pump and the reversing valve through water-tight cables.
4. The sampling system of claim 1, wherein: the sediment pore water time sequence sampling system comprises a gravity penetration control device and an osmotic pump sampling control device; the gravity penetration control device comprises a gravity distribution cover, a fixed connecting plate is fixedly sleeved on the outer wall of the gravity distribution cover, a flow control outlet is formed in the side wall below the gravity distribution cover, a penetration release oil cylinder is mounted on the fixed connecting plate, an oil cylinder rod of the penetration release oil cylinder is connected with a telescopic support guide rod, and the telescopic support guide rod can penetrate through an opening in the side wall of the gravity distribution cover and is connected with the osmotic pump sampling control device in a clamping mode; the penetration release oil cylinder is electrically connected with a penetration release oil cylinder control switch; the osmotic pump sampling control device comprises an osmotic pump, the bottom of the osmotic pump is connected with a sampling pipeline, a filter block is arranged in the sampling pipeline close to the outlet of the pipeline at the bottom, a plurality of capillary ducts which are transversely arranged are connected to the side wall of the sampling pipeline close to one end of the osmotic pump, and the osmotic pump is electrically connected with an electromagnetic control valve of the osmotic pump; and the power line and the control line penetrating the release oil cylinder control switch and the osmotic pump electromagnetic control valve are connected with the lower computer control unit through corresponding watertight connectors and watertight cables.
5. The sampling system of claim 1, wherein: the sediment pore water space sequence sampling system comprises an oil cylinder penetration control device and an oil cylinder sampling control device; the oil cylinder penetration control device system comprises a sliding rail which is vertically arranged, a sliding plate is connected to the sliding rail in a sliding way, the oil cylinder sampling control device is fixed on the sliding plate, pulley blocks are symmetrically arranged at the upper end and the lower end of the sliding rail, the pulley blocks are in transmission connection through sliding ropes, the sliding plate is connected with movable pulleys of the pulley blocks, and one end of each sliding rope is connected with a driving oil cylinder; the oil cylinder sampling control device comprises a vertically arranged filter element integrated inserted link; the filter element integrated inserting rod is integrated with a plurality of micron-sized filter joints, a filter element is inserted into each interval of 2cm in the interval of 0-0.5m above the filter element integrated inserting rod, a filter element is inserted into each interval of 5cm in the interval of 0.5-2m, different liquid outlets are corresponding to the filter elements with different heights, the liquid outlets are connected to a waste liquid isolation check valve through connecting pipes, the waste liquid isolation check valve is arranged at a water inlet of a waste liquid cylinder, a piston and a connecting rod are arranged in the waste liquid cylinder, one end of the connecting rod is connected with the piston, the other end of the connecting rod is connected to a power cylinder, and the waste liquid cylinder and the power cylinder are arranged on the sliding plate.
6. The sampling system of claim 2, wherein: the lower computer control unit comprises a controller, a communication module and a battery module; the controller is used for indirectly controlling the operation of five groups of overlying water particulate matter space sequence sampling systems and directly controlling the operation of one group of sediment pore water time sequence sampling systems and one group of sediment pore water space sequence sampling systems; the communication module is used for carrying out data communication between the lower computer control unit and the upper computer control unit, and the battery module is used for providing power for the whole system.
7. The sampling system of claim 1, wherein: the upper computer control unit comprises a PC, a communication module and a user control interface; the PC is used for operating the user control interface, one end of the communication module is connected to the PC, the other end of the communication module is connected to the lower computer control unit through the watertight connector and the watertight cable, and communication data are established between the lower computer control unit and the upper computer control unit.
8. A sampling system control method is characterized in that: the method comprises the steps of overlying water particulate matter space sequence sampling; the overlying water particulate matter spatial sequence sampling process comprises the following steps:
step A: before the upper water-covered particulate matter space sequence sampling system works, detecting and adjusting the temperature of the oil bath, feeding back the monitored temperature sensor data to the lower computer control unit, and then transmitting the monitored temperature sensor data to the upper computer control unit;
and (B) step (B): an operator gives a sampling instruction, a gear pump is controlled by a relay module to pump the overlying water and the particles into a water inlet heating device, and the overlying water and the particles flow to a reversing valve after being heated by an oil bath; the push rod motor in the reversing valve is used for pushing the movable shaft core to axially move, so that a liquid path switching function is realized; the initial position of the push rod motor is in an extending state, the shaft core interface is aligned with the switching interface A, and the water collecting bag starts to collect the overlying water and the particles, so that the in-situ preservation function of the overlying water and the particles is realized;
step C: an operator issues a switching instruction to control the push rod motor to shrink, the valve core interface is aligned to the switching interface B, the liquid path is switched, the overlying water and the particles flow into the filtering container, the filter membrane filters out the particles and entraps the particles at the front end of the filter membrane, and the overlying water is stored in the water tank through the filter membrane, so that the in-situ separation function of the overlying water and the particles is realized.
9. The sampling system control method according to claim 8, wherein: the method further comprises a sediment pore water time series sampling process, wherein the sediment pore water time series sampling process comprises the following steps of:
step D: before the sediment pore water time sequence sampling system works, the penetration release oil cylinder is used for controlling the extension of the telescopic support guide rod, and the osmotic pump sampling control device is clamped on the fixed connecting plate;
step E: when an operator gives an instruction, the penetration release oil cylinder is controlled by the penetration release oil cylinder control switch to retract the telescopic support guide rod, the osmotic pump sampling control device penetrates into sediment under the action of gravity after losing support, and the sampling device is completely deployed;
step F: after receiving the sampling instruction, controlling the osmotic pump to start working through an electromagnetic control valve of the osmotic pump; the osmotic pump can generate continuous and stable sampling power, sediment pore water in different time periods is stored in different sections of the same capillary guide pipe after being filtered by the filter block, and when a sample needs to be transferred, the sampling power is converted according to the length of the capillary guide pipe, so that the sediment pore water time sequence sampling function is realized.
10. The sampling system control method according to claim 8, wherein: the method further comprises a sediment pore water space sequence sampling process, wherein the sediment pore water space sequence sampling process comprises the following steps of:
step G: before the sediment pore water space sequence sampling system works, a push rod of a driving oil cylinder is in a contracted state, the position of a movable pulley in a pulley block is raised, and an oil cylinder sampling control device is pulled up by a sliding rope;
step H: when an operator gives an instruction, controlling a push rod of a driving oil cylinder to start to extend, gradually lowering the position of a movable pulley in a pulley block, and enabling an oil cylinder sampling control device to penetrate into sediment under the action of gravity, so that the sampling device is completely deployed;
step I: after receiving the sampling instruction, controlling the power cylinder to move, driving the piston to move by the power cylinder through the connecting rod, generating continuous and stable sampling power by the waste liquid cylinder, storing sediment pore water with different heights in connecting pipes with different serial numbers after passing through the filter element, and distinguishing according to the serial numbers of the connecting pipes when the sample needs to be transferred, thereby realizing the sediment pore water space sequence sampling function.
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| CN117647418A (en) * | 2024-01-28 | 2024-03-05 | 浙江大学海南研究院 | Methane blowby area cold spring spout granule carbon sampler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117647418A (en) * | 2024-01-28 | 2024-03-05 | 浙江大学海南研究院 | Methane blowby area cold spring spout granule carbon sampler |
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