CN111100788B

CN111100788B - Biological culture substrates for extraterrestrial space

Info

Publication number: CN111100788B
Application number: CN201911367699.4A
Authority: CN
Inventors: 邱丹; 谢更新; 张元勋; 陈鹏; 郑先哲; 杨小俊
Original assignee: Chongqing Jiuyi Zhongmai Environmental Protection Technology Co ltd; Eight Hospital Beijing Space Technology Research Institute Co ltd; Chongqing University
Current assignee: Eight Hospital Beijing Space Technology Research Institute Co ltd; Chongqing University
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2022-04-05
Anticipated expiration: 2039-12-26
Also published as: CN111100788A

Abstract

The invention discloses a biological culture substrate suitable for extraterrestrial space. The fixed layer is sequentially fixed and covered on the growth base layer from bottom to top for fixing the growth base layer in the box, and the mesh aperture of the mesh covering the fixed layer is larger than the aperture required for biological growth; It can create and simulate an environment that is relatively suitable for biological growth or cultivation, and can maintain no damage and scattering during transportation to extraterrestrial bodies, and can also ensure the survival and growth of plants, animals and microorganisms. The system is carried out smoothly; the system of the invention preliminarily realizes the biological experiment of human beings on extraterrestrial bodies, and provides research basis and experience for human beings to build other planetary bases on the moon in the future, which has great theoretical and practical significance.

Description

Biological culture substrate suitable for extraterrestrial space

Technical Field

The invention relates to experimental equipment, in particular to a biological culture substrate suitable for an extraterrestrial space.

Background

The amount of resources on the earth is huge, but due to the development of society, the absolute amount of population is increased, and the resource development is further expanded, so that the occupation amount of the resources on the earth per capita is reduced year by year.

With the further development of scientific technology, the possibility that human beings face other stars is gradually evolving towards reality, and at the present time that earth resources are gradually lacked due to excessive development, it is a realistic problem to provide scientific research in the present time to research how to utilize star-cultured organisms (animals and plants) other than the earth.

The environment of other stars in the outer space is different from the earth, and is not suitable for the growth and reproduction of the terrestrial organisms, so that an environment needs to be researched, the environment can be used for the outer space and the earth except for the terrestrial organisms to culture the organisms so as to obtain the data of the organisms cultured on the earth except for the terrestrial organisms, and a theoretical basis is provided for utilizing resources on the earth except for the terrestrial organisms.

When a suitable substrate for growth such as soil on the earth is transported to an extra-terrestrial space, the orientation changes drastically at any time, and facilities such as soil scatter, and so on, and therefore, a fundamental problem to be solved is how to smoothly transport a growth foundation such as soil to a target space without scattering.

Therefore, there is a need for a biological culture substrate suitable for an extraterrestrial space, which can create and simulate an environment relatively suitable for biological growth or cultivation in the extraterrestrial space, and can prevent damage or scattering of soil during transportation to an extraterrestrial object, thereby ensuring smooth progress of an experimental process.

Disclosure of Invention

In view of the above, the present invention provides a biological culture substrate suitable for an extraterrestrial space, which can create and simulate an environment relatively suitable for biological growth or cultivation in the extraterrestrial space, and can prevent damage or scattering of soil during transportation to an extraterrestrial object, thereby ensuring smooth progress of an experimental process.

The biological culture substrate suitable for the extraterrestrial space comprises a growth substrate layer and a fixing layer, wherein the fixing layer at least comprises a water-soluble material layer, and the water-soluble material layer is fixedly covered on the growth substrate layer and used for fixing the growth substrate layer.

Further, the fixed layer still includes netted fixed layer that covers, water-soluble material layer and netted fixed layer that covers are fixed in proper order from bottom to top and are used for being fixed in a box body with the growth stratum basale on the growth stratum basale, the mesh aperture of netted fixed layer that covers is greater than the required aperture of biological growth.

Further, when in use, the water for growth is conveyed to the growth substrate layer from the net-shaped covering and fixing layer and the water-soluble material layer in sequence by the water for growth passing through the net-shaped covering and fixing layer.

Further, still including the box body that is used for retraining the growth stratum basale, the box body is equipped with a plurality of cycle district, and a plurality of cycle district are equipped with biological growth basement and fixed bed respectively and a plurality of cycle district provide the growth water according to the cycle of setting for in proper order.

Furthermore, the box body is divided into a first period area and a second period area which is hermetically separated from the first period area, and the first period area and the second period area are respectively provided with a biological growth substrate and a fixed layer.

Further, the water-soluble material layer is a water-soluble cotton material layer or a water-soluble solid fertilizer plate with humus soil as a framework.

Further, plant seeds are contained in the growth substrate layer.

Furthermore, the growth substrate layer also contains microbial cells and worm eggs.

The invention has the beneficial effects that: the biological culture substrate suitable for the extraterrestrial space can create and simulate an environment relatively adaptive to biological growth or cultivation in the extraterrestrial space (including stars), can keep no damage or scattering in the process of transporting to the extraterrestrial stars, and can ensure the smooth operation of the survival and growth experiment process of plants, animals and microorganisms; the system of the invention preliminarily realizes the biological test of human beings on the planet outside the earth, provides research foundation and experience for establishing other planet bases of the moon for the human beings in the future, and has important theoretical and practical significance.

Drawings

The invention is further described below with reference to the figures and examples.

FIG. 1 is a schematic diagram of the outline of a system to which the present invention is applied;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a perspective view of a system to which the present invention is applied (with the heat sink removed);

FIG. 4 is a perspective view of a system to which the present invention is applied;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 6 is an enlarged view taken along line D of FIG. 5;

FIG. 7 is a heat-insulating layout view of the light pipe;

FIG. 8 is a diagram of a light management system architecture;

FIG. 9 is a schematic view of the arrangement of the insulation material;

FIG. 10 is a schematic view of a growth substrate structure;

FIG. 11 is a schematic diagram of the structure of the frost cracking apparatus;

FIG. 12 is a schematic structural view of a water pump outlet pipe (pipe orifice is positioned on a growth substrate);

fig. 13 is a control schematic diagram of the entire system of the present invention.

Detailed Description

As shown in the figure: the invention is explained by the overall structure of the invention applied to the biological culture system applicable to the extraterrestrial space, the biological culture substrate applicable to the extraterrestrial space comprises a growth substrate layer and a fixing layer, the fixing layer at least comprises a water-soluble material layer, the water-soluble material layer is fixedly covered on the growth substrate layer for fixing the growth substrate layer, and a box body is generally adopted for containing the growth substrate layer; the growth substrate layer 803 generally comprises soil (dry soil in the transportation process, without conditions for plant seed growth and germination) beneficial to plant growth, corresponding plant seeds, animal eggs (fruit flies, yeast, potatoes, succulents plants, camel spines and the like in the embodiment), and the like, in order to ensure that the conditions of emission and no dumping and scattering occur in the transportation process, a water-soluble material layer (generally water-soluble cotton, certainly a protective layer with set strength made of water-soluble fertilizer) is covered on the soil surface in the box body, when the star body (the moon in the embodiment) is set to be used, the water-soluble material layer is dissolved through watering, a water source for plant growth is provided, and the water-soluble material layer 802 does not influence the plant growth; because the water-soluble material layer is solid before being dissolved, the water-soluble material layer can be ensured not to scatter in the violent shaking transportation process after being properly reinforced.

In this embodiment, the fixing layer further includes a mesh-shaped covering and fixing layer 801, and the water-soluble material layer 802 and the mesh-shaped covering and fixing layer 801 are sequentially and fixedly covered on the growth substrate layer 803 from bottom to top for fixing the growth substrate layer 803 in a box 804, of course, the box 804 can be set to have a larger volume and a larger bottom area according to the size of the shell 1, which is not described herein again, and the mesh aperture of the mesh-shaped covering and fixing layer is larger than the aperture required for biological growth; the water-soluble material is reinforced by a net-shaped covering and fixing layer 801, which covers the upper surface of the water-soluble material layer and is fixed at the edge of the port of the box body to form a firm whole; meanwhile, in the process of plant growth, the aperture of the meshes ensures that the plants grow upwards and pass through, and the box body and the reticular covering and fixing layer can be made of high polymer materials, which is not described in detail herein.

The system comprises a shell 1, a biological cabin, a light management system, a heat management system, a water supply system and a monitoring system; the biological chamber is located in the upper space in the housing 1 and is relatively independent and sealed, and the biological culture substrate suitable for the extraterrestrial space of the invention is located in the biological chamber.

The shell 1 is sealed relative to the outside, and before the system leaves the earth to go to a target extraterrestrial space, the gas environment consistent with the earth is sealed in the shell 1, which is not described again; the biological cabin is positioned in the shell 1 and provides a foundation for the living and growth of organisms; providing a foundation refers to providing a foundation environment for plants, animals and microorganisms to live and grow, such as soil and the like;

the light management system is used for forming a light environment suitable for living and growing of organisms at least in a biological cabin (which can be the whole shell); the light management system provides a light environment, namely, external natural light is guided or simulated natural light is manufactured by the light management system, so that the plants form the photosynthesis and the illumination environment required by animals, different light forming schemes are provided for different extraterrestrial spaces, such as the moon, the light can be formed by guiding, the light is required to be emitted and fitted into the light environment similar to the natural light for the extraterrestrial space which is dark for a long time, and the light environment similar to the natural light is formed by fitting belongs to the prior art, and is not described in detail herein;

the heat management system is used for forming a temperature environment suitable for living and growing of organisms at least in the biological cabin (generally the whole shell); in order to ensure the normal growth and survival of organisms (animals, plants and microorganisms) in the biological cabin, proper temperature (similar to the environmental temperature of the earth) needs to be formed in the biological cabin (or the whole shell), and different heat management modes are needed in different off-ground spaces; for example, during the daytime of the moon, heat needs to be dissipated outwards and the moon needs to be cooled properly, so that the temperature is lower relative to the temperature of the moon to be suitable for living and growing of organisms, and during the night or other low-temperature stars or spaces, if the temperature needs to be maintained, the interior of the shell needs to be heated properly; certainly, a certain heat preservation structure design is required, and details are not repeated herein; the heat management system can adopt a conventional air conditioner structure, can be processed in a small size, and can also adopt a heating sheet structure and a refrigerating sheet structure to achieve the aim of the invention, and the heating sheet structure and the refrigerating sheet structure are simple solid structures, so that the heat management system is convenient to transport and is suitable for a complex process of transporting to an off-ground space;

the water supply system is used for providing water for living and growing of organisms in the biological cabin, the conventional design of the water supply system is realized through the water cabin and the water pump, and the flow is properly controlled to ensure the water required by living and growing;

the monitoring system is used for monitoring and controlling environmental parameters required by the living and growing of the living creatures, such as video monitoring and monitoring of sensors (temperature, humidity, illumination, oxygen and the like), and is executed through a series of executing mechanisms (a heat management system, a water supply system and the like) to ensure that effective monitoring and control are implemented and a proper environment is achieved;

the sensors (temperature, humidity, illumination, oxygen, etc.) are generally mounted at predetermined positions in the biological chamber, and the mounting positions 11 are used for mounting the sensors.

As shown in the figure, the housing 1 is a sealed structure, when the earth launches towards a set star, air is sealed in the housing for the growth and use of organisms (in the embodiment, fruit flies, yeasts, potatoes, succulent plants, camel spines and the like), and the biological cabin is a relatively independent space for organism cultivation in the housing and is positioned at the upper part of the housing; the shell is a cylinder with the diameter of about 170mm and the height of about 200mm, is made of aluminum alloy, and can realize biological culture experiments; the shell is subjected to hard anodizing treatment to improve various performances of the aluminum alloy shell, including corrosion resistance, wear resistance, weather resistance, insulativity, adsorbability and the like. And producing a layer of hard Al2O3 film with the thickness of 25-150um on the surface of the aluminum alloy after hard anodizing.

When the system of the present invention reaches a set star (moon in this embodiment) with the airship, sunlight is introduced on the moon, an appropriate temperature is adjusted, and water is introduced, so that the plant seeds in the growth substrate layer start to germinate and grow under growth conditions, and the organisms carried in the load constitute a micro ecosystem including "producer, consumer, and decomposer". Wherein the plants produce oxygen and food for "consumption" by all living beings; drosophila, which is a consumer, and yeast, which is a decomposer, produce carbon dioxide by consuming oxygen for photosynthesis by plants. In addition, yeast can decompose plant and fruit fly waste to grow, and the yeast can be used as food of fruit fly.

In the embodiment, a plurality of periodic zones are arranged in the biological bin, the plurality of periodic zones are respectively provided with a biological growth substrate and a fixed layer, and the plurality of periodic zones are sequentially supplied with water by a water supply system according to a set period; for example, on the moon, according to the cycle of the monthly day and the monthly night periods, it can be designed that one period area is started in one monthly day period (other period areas are not communicated with water), the other period areas are dormant in the monthly night, and the second period area is communicated with water to form an environment for living and growing in the next monthly day period, so as to achieve long-term monitoring growth. To obtain more efficient data; the water can be automatically supplied by a water pump or other containers (bottom valves and the like).

In this embodiment, the water supply system comprises a water tank 7 and a water pump 701 (electromagnetic water pump) for delivering water to the biological growth substrate, and the outlet of the water pump is positioned on the mesh-shaped covering and fixing layer to deliver water to the growth substrate layer sequentially from the mesh-shaped covering and fixing layer and the water-soluble material layer; as shown in the figure, the water tank is located at the lower position of the biological cabin in the housing (of course, the water tank can be installed at other suitable positions, and the position is not particularly limited), the housing is provided with a partition plate 101 for separating the biological cabin from the water tank, the partition plate 101 is fixed in the housing 1 (by using the existing mechanical fixing method), and the biological growth substrate 8 is fixed on the partition plate 101; the type of the water pump is not particularly limited, preferably an electromagnetic water pump, a sealed water bag for containing water is arranged in the water tank, the water storage bag is produced by Shanghai pure biotechnology limited, the capacity of the water storage bag is 20mL, the water storage bag is fixed in the water tank, the electromagnetic pump is fixed at the bottom of the water tank base through GD414 glue, and the communication and conveying relationship between the electromagnetic water pump and the water storage bag and between the electromagnetic water pump and the biological growth base is not described again;

in order to simplify the structure and ensure that water in the water tank cannot flow out through the water pump and the pipeline of the water pump in the process of conveying to a target off-ground space (various directions can be formed, and the water can flow according to the direction of the force), a section of vaseline 7012 is filled in the pump outlet pipeline 7011, so that the sealing effect is good, and after the destination is reached and the proper temperature is recovered, the vaseline is melted or is flushed out by the water pressure of the pump, and the normal use can be realized.

In this embodiment, the water supply system further includes a frost crack water supply device, the frost crack water supply device includes a water supply sealed container disposed at an upper portion of the corresponding periodic region, the water supply sealed container is filled with water, the water supply sealed container may fail under a condition that low-temperature water is frozen, and leaks water to the corresponding periodic region after the temperature is restored and the ice is melted; the areas of a plurality of periods of the structure can be free from water pumps, the characteristic that water icing has expansion is utilized, the low temperature of the environment is utilized between two growth periods to freeze the water in the container and burst the container, after the ice melts after the temperature is recovered in the next period, the water flows into the corresponding growth substrate through the burst opening, the growth period is recovered, and the structure is suitable for the extraterrestrial space with obvious temperature change.

In this embodiment, the two periodic regions are a first periodic region and a second periodic region, which are respectively arranged in the box body 804 and are hermetically separated from the first periodic region, the first periodic region and the second periodic region are respectively provided with a biological growth substrate and a fixed layer, and an outlet of the water pump is located in the first periodic region and is conveyed to the growth substrate layer of the first periodic region through the mesh-shaped covering fixed layer of the first periodic region and the water-soluble material layer of the periodic region; the water supply system also comprises a frost crack water supply device which comprises a water supply sealed container 17 arranged at the upper part of the reticular covering fixed layer of the second period area, wherein the water supply sealed container 17 is filled with water, can lose efficacy under the condition that low-temperature water is frozen, and leaks water to a growth basal layer of the second period area after the temperature is recovered and the ice is melted; the star body suitable for the embodiment is a moon, has a month and day period, and the period suitable for plant growth is also the month and day period; the growth substrate of this embodiment is used as a two-month day cycle, the first cycle zone is to culture organisms (plants in this embodiment, but it is needless to say that an animal zone and a plant zone can be divided in the first cycle zone for culturing plants and animals, respectively) in the first month day cycle (14 days), and water is supplied by an electromagnetic pump; in the second period area, no water is added in the first monthly day period, and the plant seeds are in a dormant state; during the moonlight period after the first moonlight period ends, the whole biological culture system does not work, namely the moonlight period is spent at the low temperature of the moon, and at the moment, the water in the water supply sealed container is frozen and expanded in the moonlight low-temperature environment to burst the water supply sealed container; in the second month and day period, the conditions such as temperature and illumination are recovered, and because the water supply sealed container is burst and fails, water flows to the growth basal layer in the second period area, so that the plant growth condition is created, and the second round of plant cultivation is carried out;

the water supply sealed container 17 may be a normal glass bottle, a metal container with a weak score 1701 (similar to the score of a bursting plate), etc. it only needs to have the characteristic of expanding and cracking after the water is frozen, and the weak score is generally arranged at the bottom of the container.

In this embodiment, the water-soluble material layer 802 is a water-soluble cotton material layer or a water-soluble solid fertilizer board with humus soil as a framework; the water-soluble cotton can be fully dissolved after being watered to ensure the growth of plants, the humus soil is humus soil with plant fibers, the plant fibers are used as a framework to be mixed with a chemical fertilizer (urea) to form a solid waste plate, the solid waste plate has certain strength, can be fixedly laminated on a growth substrate layer through net-shaped covering, and can provide fertilizer nutrition for the plants after being watered and the urea is dissolved.

In this embodiment, the thermal management system includes a thermal insulation material layer 16 disposed on the outer surface of the casing 1 and an active temperature control device for maintaining the temperature in the casing 1 within a set range, wherein the active temperature control device includes a cooling sheet 12(1201) closely attached to the casing, and may be coated with a thermal conductive adhesive; the heat insulation material layer 16 reduces the load heat loss as much as possible, mainly in the solar radiation free stage; secondly, isolating the heating of the heat source of the ambient environment of the load, mainly in the stage with solar radiation; the refrigerating pieces 12(1201) can provide cold for the load under the condition of higher external temperature in the solar radiation stage; the active temperature control device is used for properly dissipating heat in the shell, so that the severe growth environment caused by overhigh temperature is avoided; the refrigerating sheet is a semiconductor refrigerating sheet in the prior art, the refrigerating surface is tightly attached to the shell after the refrigerating sheet is electrified, and the heating surface is externally used for heat dissipation; the active temperature control device further comprises an electric heating sheet 15 arranged in the shell, a temperature rise heat source is provided through the electric heating sheet, the active temperature control device is suitable for different outdoor spaces, and the temperature is kept constant or kept within a set range as far as possible according to the temperature in the shell 1 under the condition that the temperature of the external environment is too low.

In this embodiment, the thermal management system further includes a heat dissipation sheet 2(201), and the heat dissipation sheet 2(201) is tightly attached to the heat dissipation surface of the cooling sheet and can be coated with a heat-conducting glue; the heat dissipation plate is generally made of metal with higher heat conductivity coefficient, and the embodiment is made of copper material; as shown in the figure, the shape of the radiating fin is adapted to the shape of the shell and is formed by an arc surface, for the convenience of installation, two radiating fins (the radiating fin 2 and the radiating fin 201) are oppositely arranged and annularly wrapped outside the shell, and the structure of one radiating fin avoids the plug connector 14 (grounding, signal transmission and power supply channels) when being installed; the two heat radiation fins 2(201) press a corresponding refrigerating fin 12(1201) against the opposite sides of the case 1, respectively.

In this embodiment, the heat sink 2(201) is fixed on the outer surface of the housing 1 by the heat insulation fixing component 10 and presses the cooling fin 12(1201) on the outer surface of the housing 1; the heat insulation fixing component comprises a heat insulation seat 1001 and a connecting screw 1002, wherein the heat insulation seat 1001 and the connecting screw 1002 are fixed on the shell in the installation direction, the connecting screw 1002 (in order to fix the cooling fins on the shell, the heat insulation fixing component is generally a plurality of groups, and for convenience of description, only one group of structure is described here) tightly fixes the cooling fins on the heat insulation seat 1001 and presses the cooling fins on the outer surface of the shell 1 through the cooling fins; as shown in the figure, the position correspondence of casing 1 surface and refrigeration piece is equipped with the installation arch, form the mounting groove that is similar to the dovetail on the installation arch, thermal-insulated seat 1001 is for the forked tail piece with mounting groove looks adaptation and install in the mounting groove, the tip stretches out the installation notch, connecting screw 1002 fixes the fin on thermal-insulated seat 1001, and still be equipped with heat insulating mattress 1004 between the outside major part of connecting screw 1002 and the fin, still establish thermal-insulated ring 1003 between fin and the thermal-insulated seat 1001 tip, as shown in the figure, thermal-insulated ring is the toper ring, the vertex of a cone supports thermal-insulated seat tip, the fin is hugged closely at the bottom of the cone, the dynamics that compresses tightly the refrigeration piece when the adjustable screw of thickness of thermal-insulated ring fastens, guarantee heat conduction efficiency.

In this embodiment, the heat load of the whole system is 0.48W, and the heat generation amount of the hot end of the semiconductor cooling fin is designed to be 3.05W. In order to sufficiently discharge the heat, the heat is prevented from accumulating at the hot end of the refrigeration plate to cause the COP of the refrigeration plate to be reduced, so that the heat conduction capability is improved by the heat pipe 13(1301), and the maximum heat transfer power of the heat pipe 13(1301) is higher than the heat productivity of the semiconductor refrigeration plate.

In this embodiment, the heat pipe 13(1301) is formed by pressing a cylindrical heat pipe with a diameter of 3mm and a wall thickness of 0.15mm, and the pressed heat pipe is a rectangular heat pipe with a width of 4mm and a thickness of 1 mm; the copper water heat pipe is adopted, the working pressure of water is less than 1 atmosphere at the working temperature of 60-80 ℃, the safety is relatively high, and the latent heat of vaporization of water is about 1.7 times of that of ammonia.

Because the water medium has higher latent heat quantity, the filling quantity of water in the heat pipe can be reduced to avoid the pipe expansion phenomenon caused by water freezing under the condition of the night. Through multiple tests, the filling amount of water in each heat pipe is finally determined to be 0.15g, so that the requirement of heat exchange amount can be met, and the pipe expansion phenomenon can be avoided through-60 ℃ experimental tests; as shown in the figure, the heat pipes are arranged at the hot end of the refrigerating fin in a radiating manner towards two sides and upwards.

The arrangement of the heat pipes 13(1301) is different according to the shape of the radiating fins, as shown in the figure, the symmetrical radiating fins (without avoiding the plug connectors) are semi-cylindrical, and the arrangement of the heat pipes is basically symmetrical, and two heat pipes are basically uniformly arranged upwards towards two sides; and the asymmetric heat sink (which is asymmetric with the gap avoiding the plug connector) does not have a heat pipe at the gap position.

In this embodiment, light management system includes light pipe 4 and light-passing board 401, light-passing board 401 is fixed at the top apron 5 of casing 1 in order to make the inside and outside non-light tight mode of casing 1, and light pipe 4 has light incoming end and light outgoing end, and with the light outgoing end is just fixed the top apron at the casing to the mode of light-passing board, as shown in the figure, light pipe 4 reflects, refracts the incident light of different angles, this embodiment has shown and has become 30 and 60 light path in casing 1 with the casing apron, light passes through the refraction, the upper surface of biological growth substrate is reachd in ways such as reflection, form and be similar to even illumination, make the plant receive abundant illumination.

As shown in the figure, the top cover plate 5 is provided with a light guide hole, the light transmission plate 401 and the light guide hole are correspondingly attached to the inner side surface of the top cover plate 5, the inner side of the top cover plate 5 is integrally provided with a mounting groove (with internal threads) for transversely restraining the light transmission plate 401, and the light transmission plate 401 is pressed in the mounting groove through a cylindrical stud 402 which is matched with the mounting groove in a threaded manner and provided with external threads to form fixing and sealing; the light guide pipe 4 extends into the light guide hole and is fixed on the light guide hole in a bonding mode and the like; because the light pipe 4 does not have a sealing function, a light-transmitting plate (light-transmitting glass plate) is added at the installation position of the light pipe 4 to be matched with the sealing ring 403, the light pipe 4 is tightly pressed by a cylindrical stud for fixing the light-transmitting plate 401 to realize the sealing at the position, and the light pipe 4 is fixed on the upper part of the top cover plate 5 in a 420 glue gluing mode.

The heat insulation material layer is arranged around the light guide hole and is in lap joint with the heat insulation material layer of the upper cover of the shell, so that good heat insulation is kept, and the repeated description is omitted.

In this embodiment, the system further comprises an oxygen generation system (not shown in the figure), which comprises an oxygen container and an oxygen electromagnetic valve installed at the air outlet of the oxygen container, wherein when the oxygen content in the biological chamber in the shell is significantly lower than that in the growth environment, the oxygen electromagnetic valve can be controlled to be opened to release proper oxygen so as to ensure the balance of the gas environment; the oxygen container can be filled with oxygen with set pressure or directly prepared by chemical reaction, preferably directly filled with oxygen, and is safe and convenient to use.

In this embodiment, the light guide tube 4 is an optical fiber tube, and is formed by bundling a plurality of optical fibers, so that the light guide tube has a good light guide effect and less light loss.

The monitoring system includes:

the signal acquisition unit is at least used for acquiring temperature and humidity parameters in the biological cabin; the device generally comprises a temperature sensor, a humidity sensor, an oxygen sensor and an illumination sensor, and is used for acquiring basic experiment data and providing theoretical support for researching the living and growth of the living organisms in the off-site space;

the central processing unit 9 is used for receiving the parameters transmitted by the signal acquisition unit and judging whether the parameters are in a set range;

the execution unit is used for receiving the execution command sent by the central processing unit, controlling the thermal management system and the water supply system and adjusting the temperature and the humidity in the biological cabin;

in this embodiment, the monitoring system further comprises a growth monitoring device, the growth monitoring device comprises a video camera or/and a camera 6 for acquiring the growth process of the living beings, the outer surfaces of the camera lens or/and the camera are provided with anti-fog layers, the anti-fog layers are generally made of existing anti-fog coatings or adhered anti-fog films, and both the anti-fog layers can play an anti-fog role and can ensure that the whole process of acquiring the growth of the living beings clearly under the condition of high humidity; as shown in the figure, two cameras are provided, the camera shooting or photographing angles of the two cameras are mutually compensated, the two cameras are respectively and fixedly arranged at the upper part of the biological growth substrate space, and the lens is aligned to the biological growth substrate;

as shown in the figure, the heat insulation material layer 16 (formed by multiple layers of heat insulation materials) wraps the whole shell 1, as shown in the figure, the bottom of the shell 1 is also fixedly connected with a second shell 3 for installing a central processing unit 9 (a master control module), the central processing unit 9 comprises a controller and a power supply management circuit, the controller forms a wireless transmission (can form a wired transmission with the control center of the airship) conversation with the outside (such as the control center of the airship), receives commands and sends control commands to the power supply management circuit and the video camera (the camera), and simultaneously receives data signals sent by the video camera, the temperature sensor, the humidity sensor, the illumination sensor, the oxygen sensor and other set sensors in the biological cabin, and sends a power-on command to the power supply management circuit according to the signals to complete the adjustment of the refrigerating capacity of the refrigerating piece, Starting and stopping the electromagnetic water pump, starting the oxygen generating device to release oxygen (oxygen electromagnetic pump), and the like, which are not described herein again; meanwhile, an external command (from the ground or the airship) can be directly input into the central processing unit for realizing control, the central processing unit can also directly output and send data to external equipment (the ground or the airship), and the video camera, the temperature sensor, the humidity sensor, the illuminance sensor and the oxygen sensor can also directly output the data to the external equipment (the ground or the airship), and the details are not repeated herein; as shown in the figure, the second shell and the shell are sealed and fixedly connected in a separated manner, the side surface and the bottom surface of the second shell are subjected to blackening (aluminum alloy anodizing) treatment (the emissivity is about 0.85) so as to facilitate heat generation of the control unit to be dissipated timely, the situation that the temperature of the lower cabin body is overhigh due to thermal deposition and electronic components are failed is prevented, and meanwhile, a gap between the shell (lower part) and the second shell (upper part) is filled with multiple layers of heat insulation materials so as to reduce the influence of the second shell 3 on the shell 1;

the shell 1 is provided with a plurality of static mechanical sealing structures for forming sealing with the outside, which belongs to the sealing mode of the container in the prior art and is not described again; all container devices in the invention are explosion-proof and fireproof in material, and are not described herein again.

The monitoring system and the power supply required by the execution unit are from a carrying system, such as an airship and the like; of course, the invention can be realized by a storage battery and the like.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. a biological culture substrate suitable for extraterrestrial space is characterized in that: comprising a growth substrate layer and a fixed layer, the fixed layer at least comprises a water-soluble material layer, and the water-soluble material layer is fixedly covered on the growth substrate layer It is used to fix the growth base layer; when in use, the water-soluble material layer is dissolved by watering;

The water-soluble material layer is composed of a water-soluble cotton material layer or a water-soluble solid fertilizer board with humus as a skeleton.

2 . The biological culture substrate suitable for extraterrestrial space according to claim 1 , wherein the fixed layer further comprises a net-like covering and fixing layer, and the water-soluble material layer and the net-like covering and fixing layer are from bottom to top. 3 . Fixing and covering the growth base layer in turn is used to fix the growth base layer in a box, and the mesh pore size of the mesh covering and fixing layer is larger than the pore size required for biological growth.

3. The biological culture substrate suitable for extraterrestrial space according to claim 2, characterized in that: during use, the water for growth is transported to the net-shaped covering and fixing layer and the water-soluble material layer successively through the mesh-shaped covering and fixing layer. Growth basal layer.

4. The biological culture substrate suitable for extraterrestrial space according to claim 1 or 2, characterized in that: it also comprises a box body for constraining the growth substrate layer, the box body is provided with a plurality of periodic zones, a plurality of The period area is respectively provided with a biological growth substrate and a fixed layer, and a plurality of period areas provide growth water in sequence according to the set period.

5. The biological culture substrate suitable for extraterrestrial space according to claim 4, wherein the box body is divided into a first period area and a second period area sealed and separated from the first period area, so that the The first periodic area and the second periodic area are respectively provided with a biological growth substrate and a fixed layer.

6 . The biological culture substrate suitable for extraterrestrial space according to claim 1 , wherein the growth substrate layer contains plant seeds. 7 .

7 . The biological culture substrate suitable for extraterrestrial space according to claim 6 , wherein the growth substrate layer further contains microbial cells and worm eggs. 8 .