CN112631178A - Deep sea macro-organism fidelity sampling control system and control method - Google Patents
Deep sea macro-organism fidelity sampling control system and control method Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K69/00—Stationary catching devices
- A01K69/06—Traps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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Abstract
The invention discloses a deep sea macrobiology fidelity sampling control system which comprises an upper computer unit, a macrobiology acquisition device and a waterproof sealed cabin, wherein the macrobiology acquisition device comprises a pressure maintaining cylinder, and a bell mouth is arranged at the inlet of the pressure maintaining cylinder; an opening and closing valve for controlling the outlet sealing mechanism is arranged at the outlet of the pressure maintaining cylinder; the outer wall of the pressure maintaining cylinder is provided with a pressure compensation device, a bait cylinder, a semiconductor refrigeration component and a waterproof sealed cabin, wherein the pressure compensation device is communicated with the pressure maintaining cylinder through a high-pressure pipe I, and the bait cylinder is communicated with the inner cavity of the pressure maintaining cylinder through a one-way valve through a high-pressure pipe II; a lithium battery box power supply module and a lower computer control unit are arranged in the waterproof sealed cabin; the upper computer unit is connected with a lower computer control unit in the waterproof sealed cabin through a watertight cable I. The whole-sea deep macrobiology pressure-maintaining sampling device is compact, simple and convenient to operate, high in automation degree, suitable for being carried on landers, manned submersible vehicles and unmanned submersible vehicles, and wide in application range.
Description
Technical Field
The invention relates to a benthos sampling device, in particular to a deep sea macrobiotic fidelity sampling control system and a control method.
Background
The known recorded marine organisms in China currently reach more than 2 ten thousand species, account for about 10 percent of the species of marine organisms in the world, and are one of the countries with the most abundant and most abundant marine organism resources in the world. The exploration of the deep sea biological resources is an important link for revealing human life secret and gene origin, and can greatly promote the development of life science. At present, various modes for collecting benthos exist, and the common method comprises trawling, non-pressure-maintaining and non-heat-insulating trapping devices. Patent CN103770917A proposes a deep sea near-bottom layer biological sampling system, which relies on a ship to carry out trawl layered sampling, and causes serious damage to the underwater ecosystem and can only collect the biological larvae with small volume. Patent CN105432574A proposes a piggyback deep-sea macrobiotic sampler and patent CN109392852A proposes a trapping and pressure-maintaining sampling device for deep-sea macrobiotic, where the samples obtained by the two sampling devices cannot maintain the in-situ pressure and temperature of the deep-sea seabed, resulting in the death of the collected organisms from the seabed back to the surface mother ship, which will have a great influence on the precise research of living conditions, seabed environment, etc. of the organisms in the seabed region.
Disclosure of Invention
In order to solve the technical problems, the invention provides a safe and reliable deep sea macrobiology fidelity sampling control system with a simple structure and provides a deep sea macrobiology fidelity sampling control method.
The technical scheme for solving the problems is as follows: a deep sea macrobiology fidelity sampling control system comprises an upper computer unit, a macrobiology acquisition device and a waterproof sealed cabin, wherein the macrobiology acquisition device comprises a pressure maintaining cylinder, and a bell mouth is installed at the inlet of the pressure maintaining cylinder; an opening and closing valve for controlling the outlet sealing mechanism is arranged at the outlet of the pressure maintaining cylinder; the outer wall of the pressure maintaining cylinder is provided with a pressure compensation device, a bait cylinder, a semiconductor refrigeration component and a waterproof sealed cabin, wherein the pressure compensation device is communicated with the pressure maintaining cylinder through a high-pressure pipe I, and the bait cylinder is communicated with the inner cavity of the pressure maintaining cylinder through a one-way valve through a high-pressure pipe II; a lithium battery box power supply module and a lower computer control unit are arranged in the waterproof sealed cabin; the upper computer unit is connected with a lower computer control unit in the waterproof sealed cabin through a watertight cable I.
In the deep sea macro-organism fidelity sampling control system, the upper computer unit comprises a PC (personal computer) and an RS485 serial port communication module; the PC machine comprises a temperature curve, a pressure curve, a real-time temperature and pressure data display window; parameters in the PC machine comprise a serial port and a baud rate; the PC is connected with the watertight cable I through the RS485 serial port communication module.
In the deep sea macro-organism fidelity sampling control system, the pressure compensation device comprises a pressure-resistant cylinder, a piston, a compensation device end cover and an inflation valve; the compensating device end cover is hermetically arranged at an opening at the top of the pressure-resistant cylinder; the piston is arranged in the pressure-resistant cylinder; the end cover of the compensating device is provided with a high-pressure pipe connecting hole and is communicated with the pressure maintaining cylinder through a high-pressure pipe I; the bottom of the pressure-resistant cylinder is provided with a through hole which is connected with an inflation tube with an inflation valve.
In the deep sea macro-biological fidelity sampling control system, the lower computer control unit comprises a control module taking an MSP430F149 single-chip microcomputer as a core, a pressure sensor and a temperature sensor, and the control module is connected with the pressure sensor and the temperature sensor; the lithium battery box power supply module supplies power to the single chip microcomputer control module, the pressure sensor and the temperature sensor.
According to the deep sea macro-organism fidelity sampling control system, the semiconductor refrigeration assembly is bonded with the outer wall of the pressure maintaining cylinder through the heat-conducting silica gel, the semiconductor refrigeration assembly comprises a multi-stage semiconductor refrigeration piece, an electric wire and an electrode base, the semiconductor refrigeration piece is formed by clamping a heat-conducting plate and a heat radiating fin, and the heat-conducting silica gel is coated between the contact surfaces of the heat-conducting plate and the heat radiating fin; the cold end of the semiconductor refrigeration piece is connected with the outer wall of the pressure maintaining cylinder through a heat conducting plate, and the hot end of the semiconductor refrigeration piece is contacted with the seawater through a radiating fin; each stage of semiconductor refrigerating sheet is connected with each electrode seat through a connecting nut, the electrode seats are connected in series through electric wires, and the electric wires are connected with a control module in the waterproof sealed cabin through a watertight cable II.
In the deep sea macro organism fidelity sampling control system, the pressure sensor is an MIK-P300 pressure transmitter, the pressure range is 0-60 MPa, the overload pressure is 150% FS, and the output signal is 0-5V; the temperature sensor is a DS18B20 temperature sensor, the temperature measuring range is-55 ℃ to 125 ℃, and the working power supply is 3.0V/DC to 5.5V/DC.
According to the deep sea macro-organism fidelity sampling control system, the semiconductor refrigeration sheet is of a TEC-12706 model, the working voltage is 12V, the maximum refrigeration capacity is 50-60W, and the maximum temperature difference is 67 ℃.
A deep sea macrobiology fidelity sampling control method based on a deep sea macrobiology fidelity sampling control system comprises the following steps:
(1) before the deep sea macrobiotic fidelity sampling control system launches water, inert gas with the water depth and pressure of 0.3 times of a sampling point is inflated into a lower cavity of a piston in the pressure compensation device through an inflation valve, and the piston in the pressure compensation device is positioned at the top of the cavity of the pressure compensation device at the moment; the semiconductor refrigeration component is arranged on the outer wall of the pressure maintaining cylinder, is connected with a circuit and is connected with a power supply, and the deep-sea macrobiology fidelity sampling control system is fixed on a deep-sea land device; checking whether the upper computer unit and the lower computer control unit work normally or not, and setting a serial port and a baud rate in a PC interface;
(2) in the process of lowering the deep sea lander, under the action of seawater pressure, a piston of the pressure compensation device moves downwards until the pressures in a lower cavity and an upper cavity of the piston are balanced; the pressure sensor collects the current depth of the deep sea macro-organism fidelity sampling control system in real time; the temperature sensor collects real-time temperature in the deep sea macro-organism fidelity sampling control system in real time;
(3) when the deep sea lander is lowered to the designated seabed surface, the pressure sensor and the temperature sensor of the deep sea macrobiosis fidelity sampling control system are subjected to AD conversion through the control module and then transmitted to the upper computer unit through the RS485 serial port communication module, the current pressure and temperature values are displayed in the PC of the upper computer unit, and the current temperature is set as a threshold value;
(4) in the process of recovering the deep sea lander to the sea surface, the pressure maintaining cylinder expands and deforms due to the reduction of the pressure of external seawater, at the moment, the inert gas in the lower cavity of the piston of the pressure compensation device pushes the piston to move towards the upper cavity, and the seawater in the upper cavity is forced to flow into the pressure maintaining cylinder through the high-pressure pipe I, so that the pressure loss in the pressure maintaining cylinder caused by the expansion and deformation of the pressure maintaining cylinder is compensated;
due to the change of the temperature of the external seawater, when the temperature in the deep sea macrobiosis fidelity sampling control system is higher than a set temperature threshold value, the control module controls the heat dissipation relay to be closed, the heating relay to be opened, the semiconductor refrigeration assembly to work, and the working current in the semiconductor refrigeration piece to control the refrigeration power; when the temperature in the deep sea macrobiotic fidelity sampling control system is lower than a set temperature threshold value, the control module controls the heat dissipation relay to be switched off, the heating relay to be switched on, the direction of the working current of the refrigerating sheet is changed, and the working current in the semiconductor refrigerating sheet is controlled to control the heating power;
the temperature sensor sends out a temperature signal, the control module receives a real-time temperature signal from the temperature sensor, the output end of the controller outputs a control signal, and the working current in the semiconductor refrigeration piece is controlled to control the refrigeration power, the cold end of the semiconductor refrigeration piece enables the temperature in the pressure-maintaining cylinder to be kept at the same temperature value as a sampling point through the heat-conducting plate, and the hot end transfers heat to seawater through the radiating fin.
The invention has the beneficial effects that:
1. the control system can monitor the state parameters of the sampling and recovery process of the macrobiotic sampling device, and the adopted PC is simple and visual, and can accurately observe the temperature curve and the pressure curve in the deep-sea macrobiotic sampling device.
2. The control system of the invention controls the direction of the working current of the semiconductor refrigerating sheet by setting the temperature threshold value through the PC, realizes heating and refrigeration, and maintains the temperature of the sample to be consistent with that of the sample during sampling.
3. The control system adopts a control module taking an MSP430F149 single chip microcomputer as a core, and the single chip microcomputer has a mixed type single chip microcomputer with a simplified instruction set and ultra-low power consumption, and has the advantages of high reliability, low power consumption, flexible expansion, small volume, low price, convenient use and the like.
4. The control system is connected through the RS485 serial port communication module, and data transmission, data display and data storage of the upper computer and the lower computer are achieved.
5. The whole-sea deep macrobiology pressure-maintaining sampling device is compact, simple and convenient to operate, high in automation degree, suitable for being carried on landers, manned submersible vehicles and unmanned submersible vehicles, and wide in application range.
Drawings
Fig. 1 is a schematic structural diagram of a deep sea macrobiotic fidelity sampling control system of the present invention.
Fig. 2 is a schematic structural diagram of the semiconductor refrigeration assembly of the present invention.
Fig. 3 is a schematic structural diagram of the pressure compensation device of the present invention.
Fig. 4 is a block diagram of the whole circuit structure of the deep sea macro-organism fidelity sampling control system of the invention.
Fig. 5 is a circuit diagram of an RS485 serial port communication module of the deep sea macro-biological fidelity sampling control system of the present invention.
Fig. 6 is a main circuit diagram of the MSP430F149 single-chip microcomputer of the invention.
Fig. 7 is a circuit diagram of a pressure sensor of the deep sea macro-biological fidelity sampling control system of the invention.
Fig. 8 is a circuit diagram of a temperature sensor of the deep sea macro-biological fidelity sampling control system of the invention.
Fig. 9 is a circuit diagram of the external connection of the relay of the deep sea macro-biological fidelity sampling control system of the invention with the refrigerating plate.
FIG. 10 is a PC interface diagram of the deep sea macro fidelity sampling control system of the present invention.
Fig. 11 is a flowchart of the method for controlling fidelity sampling of deep sea macroorganisms according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the deep sea macrobiology fidelity sampling control system comprises an upper computer unit 1, a macrobiology collecting device and a waterproof sealed cabin 3, wherein the macrobiology collecting device comprises a pressure maintaining cylinder 13, and a bell mouth 9 is installed at an inlet of the pressure maintaining cylinder 13; the outlet of the pressure maintaining cylinder 13 is provided with a switch valve 4 for controlling an outlet sealing mechanism; the outer wall of the pressure maintaining cylinder 13 is provided with a pressure compensation device 8, a bait cylinder 10, a semiconductor refrigeration component 6 and a waterproof sealed cabin 3, the pressure compensation device 8 is communicated with the pressure maintaining cylinder 13 through a high-pressure pipe I7, and the bait cylinder 10 is communicated with the inner cavity of the pressure maintaining cylinder 13 through a one-way valve 12 through a high-pressure pipe II 11; a lithium battery box power supply module 401 and a lower computer control unit are arranged in the waterproof sealed cabin 3; the upper computer unit 1 is connected with a lower computer control unit in the waterproof sealed cabin 3 through a watertight cable I2.
The upper computer unit 1 comprises a PC (personal computer) 15 and an RS485 serial port communication module 14; the PC 15 comprises a temperature curve, a pressure curve, a real-time temperature and pressure data display window; the parameters in the PC 15 comprise serial ports, baud rate, empty waveforms and empty debugging information buttons; (ii) a The PC 15 is connected with the watertight cable I2 through the RS485 serial port communication module 14.
As shown in fig. 3, the pressure compensation device 8 includes a pressure-resistant cylinder 803, a piston 802, a compensation device end cap 804 and an inflation valve 801; the compensating device end cover 804 is hermetically arranged at the opening at the top of the pressure-resistant cylinder 803; the piston 802 is placed in the pressure-resistant cylinder 803; the compensating device end cover 804 is provided with a high-pressure pipe connecting hole and is communicated with the pressure maintaining cylinder 13 through a high-pressure pipe I7; the bottom of the pressure-resistant cylinder 803 is provided with a through hole, and the pressure-resistant cylinder is connected with an inflation tube with an inflation valve 801 through the through hole.
As shown in fig. 4, the lower computer control unit includes a control module 402 with an MSP430F149 single chip microcomputer as a core, a pressure sensor 404 and a temperature sensor 405, wherein the control module 402 is connected with the pressure sensor 404 and the temperature sensor 405; the lithium battery box power supply module 401 supplies power to the single chip microcomputer control module 402, the pressure sensor 404 and the temperature sensor 405.
As shown in fig. 2, the semiconductor refrigeration component 6 is bonded to the outer wall of the pressure maintaining cylinder 13 through heat-conducting silica gel, the semiconductor refrigeration component 6 includes a multistage semiconductor refrigeration sheet 607, an electric wire 603 and an electrode holder 601, the semiconductor refrigeration sheet 607 is formed by clamping a heat-conducting plate 606 and a heat-radiating fin 605, and heat-conducting silica gel 602 is coated between the contact surfaces of the heat-conducting plate 606 and the heat-radiating fin 605; the cold end of the semiconductor refrigeration piece 607 is connected with the outer wall of the pressure maintaining cylinder 13 through the heat conducting plate 606, and the hot end is contacted with the seawater through the radiating fin 605; each stage of semiconductor refrigeration piece 607 is respectively connected with each electrode holder 601 through a coupling nut 604, the electrode holders 601 are connected in series through electric wires 603, and the electric wires 603 are connected with the control module 402 in the waterproof sealed cabin 3 through a watertight cable II 5.
As shown in fig. 7 and 8, the pressure sensor 404 is an MIK-P300 pressure transmitter, the pressure range is 0-60 MPa, the overload pressure is 150% FS, and the output signal is 0-5V; the temperature sensor 405 is a DS18B20 temperature sensor 405, the temperature measuring range is-55-125 ℃, and the working power supply is 3.0-5.5V/DC.
As shown in fig. 6, the MSP430F149 single chip microcomputer is a 16-bit hybrid single chip microcomputer with a simplified instruction set and ultra-low power consumption, and has the advantages of high reliability, low power consumption, flexible expansion, small volume, low price, convenient use, and the like.
The semiconductor refrigerating piece 607 is of a TEC-12706 model, the working voltage is 12V, the maximum refrigerating capacity is 50-60W, and the maximum temperature difference is 67 ℃.
As shown in fig. 9, a deep sea macrobiosis fidelity sampling control method based on a deep sea macrobiosis fidelity sampling control system includes the following steps:
(1) before launching the deep sea macrobiotic fidelity sampling control system, filling inert gas with the water depth pressure of 0.3 times of the sampling point into the lower cavity of the piston 802 in the pressure compensation device 8 through the gas filling valve 801, wherein the piston 802 in the pressure compensation device 8 is positioned at the top of the cavity of the pressure compensation device 8; the semiconductor refrigeration component 6 is arranged on the outer wall of the pressure-holding cylinder 13, is connected with a circuit and is connected with a power supply, and the deep-sea macrobiology fidelity sampling control system is fixed on a deep-sea land device; checking whether the upper computer unit 1 and the lower computer control unit work normally or not, and setting a serial port and a baud rate in a PC (personal computer) 15 interface;
(2) in the process of lowering the deep sea lander, under the action of seawater pressure, the piston 802 of the pressure compensation device 8 moves downwards until the pressures in the lower cavity and the upper cavity of the piston 802 are balanced; the pressure sensor 404 collects the current depth of the deep sea macro fidelity sampling control system in real time; the temperature sensor 405 collects real-time temperature in the deep sea macro fidelity sampling control system in real time;
(3) when the deep sea lander is lowered to the designated seabed surface, the pressure sensor 404 and the temperature sensor 405 of the deep sea macrobiosis fidelity sampling control system are subjected to AD conversion through the control module 402 and then are transmitted to the upper computer unit 1 through the RS485 serial port communication module 14, the current pressure and temperature values are displayed in the PC 15 of the upper computer unit 1, and the current temperature is set as a threshold value;
(4) in the process of recovering the deep sea lander to the sea surface, the pressure maintaining cylinder 13 expands and deforms due to the reduction of the pressure of the external seawater, at the moment, the inert gas in the lower cavity of the piston 802 of the pressure compensation device 8 pushes the piston 802 to move towards the upper cavity, the seawater in the upper cavity is forced to flow into the pressure maintaining cylinder 13 through the high-pressure pipe I7, and therefore the pressure loss in the pressure maintaining cylinder 13 caused by the expansion and deformation of the pressure maintaining cylinder 13 is compensated;
due to the change of the temperature of the external seawater, when the temperature in the deep sea macrobiosis fidelity sampling control system is higher than a set temperature threshold value, the control module 402 controls the heat dissipation relay to be closed, the heating relay to be opened, so that the semiconductor refrigeration assembly 6 works, and the working current in the semiconductor refrigeration piece 607 is controlled to control the refrigeration power; when the temperature in the deep sea macrobiosis fidelity sampling control system is lower than a set temperature threshold value, the control module 402 controls the heat dissipation relay to be switched off, the heating relay to be switched on, the direction of the working current of the refrigerating sheet is changed, and the working current in the semiconductor refrigerating sheet 607 is controlled to control the heating power;
the temperature sensor 405 sends a temperature signal, the control module 402 receives a real-time temperature signal from the temperature sensor 405, the output end of the controller outputs a control signal, the working current in the semiconductor chilling plate 607 is controlled to control the chilling power, the cold end of the semiconductor chilling plate 607 keeps the temperature in the pressure maintaining cylinder 13 at the same temperature value as the sampling point through the heat conducting plate 606, and the hot end transfers the heat to the seawater through the heat radiating fin 605.
Claims (8)
1. The utility model provides a deep sea macro biology fidelity sampling control system which characterized in that: the device comprises an upper computer unit, a macrobiotic acquisition device and a waterproof sealed cabin, wherein the macrobiotic acquisition device comprises a pressure maintaining cylinder, and a bell mouth is installed at the inlet of the pressure maintaining cylinder; an opening and closing valve for controlling the outlet sealing mechanism is arranged at the outlet of the pressure maintaining cylinder; the outer wall of the pressure maintaining cylinder is provided with a pressure compensation device, a bait cylinder, a semiconductor refrigeration component and a waterproof sealed cabin, wherein the pressure compensation device is communicated with the pressure maintaining cylinder through a high-pressure pipe I, and the bait cylinder is communicated with the inner cavity of the pressure maintaining cylinder through a one-way valve through a high-pressure pipe II; a lithium battery box power supply module and a lower computer control unit are arranged in the waterproof sealed cabin; the upper computer unit is connected with a lower computer control unit in the waterproof sealed cabin through a watertight cable I.
2. The deep-sea macro-organism fidelity sampling control system of claim 1, wherein: the upper computer unit comprises a PC and an RS485 serial port communication module; the PC machine comprises a temperature curve, a pressure curve, a real-time temperature and pressure data display window; parameters in the PC machine comprise a serial port and a baud rate; the PC is connected with the watertight cable I through the RS485 serial port communication module.
3. The deep-sea macro-organism fidelity sampling control system of claim 1, wherein: the pressure compensation device comprises a pressure-resistant cylinder, a piston, a compensation device end cover and an inflation valve; the compensating device end cover is hermetically arranged at an opening at the top of the pressure-resistant cylinder; the piston is arranged in the pressure-resistant cylinder; the end cover of the compensating device is provided with a high-pressure pipe connecting hole and is communicated with the pressure maintaining cylinder through a high-pressure pipe I; the bottom of the pressure-resistant cylinder is provided with a through hole which is connected with an inflation tube with an inflation valve.
4. The deep-sea macro-organism fidelity sampling control system of claim 1, wherein: the lower computer control unit comprises a control module, a pressure sensor and a temperature sensor which take an MSP430F149 single chip microcomputer as a core, and the control module is connected with the pressure sensor and the temperature sensor; the lithium battery box power supply module supplies power to the single chip microcomputer control module, the pressure sensor and the temperature sensor.
5. The deep-sea macro-organism fidelity sampling control system of claim 4, wherein: the semiconductor refrigeration assembly is bonded with the outer wall of the pressure maintaining cylinder through heat-conducting silica gel, the semiconductor refrigeration assembly comprises a multistage semiconductor refrigeration piece, an electric wire and an electrode seat, the semiconductor refrigeration piece is formed by clamping a heat-conducting plate and a radiating fin, and heat-conducting silicone grease is coated between the contact surfaces of the heat-conducting plate and the radiating fin; the cold end of the semiconductor refrigeration piece is connected with the outer wall of the pressure maintaining cylinder through a heat conducting plate, and the hot end of the semiconductor refrigeration piece is contacted with the seawater through a radiating fin; each stage of semiconductor refrigerating sheet is connected with each electrode seat through a connecting nut, the electrode seats are connected in series through electric wires, and the electric wires are connected with a control module in the waterproof sealed cabin through a watertight cable II.
6. The deep-sea macro-organism fidelity sampling control system of claim 4, wherein: the pressure sensor is an MIK-P300 pressure transmitter, the pressure range is 0-60 MPa, the overload pressure is 150% FS, and an output signal is 0-5V; the temperature sensor is a DS18B20 temperature sensor, the temperature measuring range is-55 ℃ to 125 ℃, and the working power supply is 3.0V/DC to 5.5V/DC.
7. The deep-sea macro-organism fidelity sampling control system of claim 5, wherein: the semiconductor refrigerating sheet is of a TEC-12706 model, the working voltage is 12V, the maximum refrigerating capacity is 50-60W, and the maximum temperature difference is 67 ℃.
8. A deep sea macrobiology fidelity sampling control method based on the deep sea macrobiology fidelity sampling control system of any one of claims 1 to 7, characterized by comprising the following steps:
(1) before the deep sea macrobiotic fidelity sampling control system launches water, inert gas with the water depth and pressure of 0.3 times of a sampling point is inflated into a lower cavity of a piston in the pressure compensation device through an inflation valve, and the piston in the pressure compensation device is positioned at the top of the cavity of the pressure compensation device at the moment; the semiconductor refrigeration component is arranged on the outer wall of the pressure maintaining cylinder, is connected with a circuit and is connected with a power supply, and the deep-sea macrobiology fidelity sampling control system is fixed on a deep-sea land device; checking whether the upper computer unit and the lower computer control unit work normally or not, and setting a serial port and a baud rate in a PC interface;
(2) in the process of lowering the deep sea lander, under the action of seawater pressure, a piston of the pressure compensation device moves downwards until the pressures in a lower cavity and an upper cavity of the piston are balanced; the pressure sensor collects the current depth of the deep sea macro-organism fidelity sampling control system in real time; the temperature sensor collects real-time temperature in the deep sea macro-organism fidelity sampling control system in real time;
(3) when the deep sea lander is lowered to the designated seabed surface, the pressure sensor and the temperature sensor of the deep sea macrobiosis fidelity sampling control system are subjected to AD conversion through the control module and then transmitted to the upper computer unit through the RS485 serial port communication module, the current pressure and temperature values are displayed in the PC of the upper computer unit, and the current temperature is set as a threshold value;
(4) in the process of recovering the deep sea lander to the sea surface, the pressure maintaining cylinder expands and deforms due to the reduction of the pressure of external seawater, at the moment, the inert gas in the lower cavity of the piston of the pressure compensation device pushes the piston to move towards the upper cavity, and the seawater in the upper cavity is forced to flow into the pressure maintaining cylinder through the high-pressure pipe I, so that the pressure loss in the pressure maintaining cylinder caused by the expansion and deformation of the pressure maintaining cylinder is compensated;
due to the change of the temperature of the external seawater, when the temperature in the deep sea macrobiosis fidelity sampling control system is higher than a set temperature threshold value, the control module controls the heat dissipation relay to be closed, the heating relay to be opened, the semiconductor refrigeration assembly to work, and the working current in the semiconductor refrigeration piece to control the refrigeration power; when the temperature in the deep sea macrobiotic fidelity sampling control system is lower than a set temperature threshold value, the control module controls the heat dissipation relay to be switched off, the heating relay to be switched on, the direction of the working current of the refrigerating sheet is changed, and the working current in the semiconductor refrigerating sheet is controlled to control the heating power;
the temperature sensor sends out a temperature signal, the control module receives a real-time temperature signal from the temperature sensor, the output end of the controller outputs a control signal, and the working current in the semiconductor refrigeration piece is controlled to control the refrigeration power, the cold end of the semiconductor refrigeration piece enables the temperature in the pressure-maintaining cylinder to be kept at the same temperature value as a sampling point through the heat-conducting plate, and the hot end transfers heat to seawater through the radiating fin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011492275.3A CN112631178A (en) | 2020-12-17 | 2020-12-17 | Deep sea macro-organism fidelity sampling control system and control method |
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| CN202011492275.3A CN112631178A (en) | 2020-12-17 | 2020-12-17 | Deep sea macro-organism fidelity sampling control system and control method |
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| CN112631178A true CN112631178A (en) | 2021-04-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210219528A1 (en) * | 2020-01-19 | 2021-07-22 | Hunan University Of Science And Technology | Suction sampler system for in situ collection of deep-sea floor organisms and method of using same |
| CN114060024A (en) * | 2021-09-27 | 2022-02-18 | 广东工业大学 | Deep sea multiphase environment in-situ multidimensional fidelity simulation and test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210219528A1 (en) * | 2020-01-19 | 2021-07-22 | Hunan University Of Science And Technology | Suction sampler system for in situ collection of deep-sea floor organisms and method of using same |
| US11812732B2 (en) * | 2020-01-19 | 2023-11-14 | Hunan University Of Science And Technology | Suction sampler system for in situ collection of deep-sea floor organisms and method of using same |
| CN114060024A (en) * | 2021-09-27 | 2022-02-18 | 广东工业大学 | Deep sea multiphase environment in-situ multidimensional fidelity simulation and test device |
| CN114060024B (en) * | 2021-09-27 | 2023-05-05 | 广东工业大学 | In-situ multidimensional fidelity simulation and test device for deep sea multiphase environment |
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