High-altitude balloon system

Abstract

The invention relates to the technical field of aerostats, and provides a high-altitude balloon system which comprises a rising balloon, a cutting mechanism, a recycling balloon and a pod, the bottom of the rising balloon is connected with the bottom of the recycling balloon, the recycling balloon is arranged in the rising balloon, the pod is fixedly connected with the recycling balloon, and task execution equipment is installed in the pod; the cutting mechanism is mounted on the outer wall of the rising balloon and used for cutting the rising balloon when the task execution equipment is recycled; wherein the buoyancy of the recovery balloon is smaller than the total gravity of the load of the pod. The pod load recovery device is simple in structure, low in cost and convenient to operate, and compared with a traditional mode of recovering the pod load through a parachute, the pod load recovery device has few interference factors when the pod load is recovered, and the recovery efficiency of task execution equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerostats, and in particular to a high-altitude balloon system. Background Art

[0002] High-altitude balloons are usually used to perform scientific experiments, remote sensing detection, meteorological observation and other tasks. The high-altitude balloon carries a gondola to a high altitude, and the gondola carries important mission execution equipment, which performs the corresponding tasks. After the flight mission is completed, the mission execution equipment needs to be recovered to the ground. At present, in order to ensure the integrity of the equipment, most of them install a parachute on the connecting rope between the ascending balloon and the gondola, and the parachute slowly descends to the ground with the load, so as to slow down the falling speed of the gondola and reduce the landing impact.

[0003] However, the normal deployment of a parachute is usually affected by many factors. The opening of a parachute depends on the stability of airflow, air pressure and other environmental factors. When the air pressure at high altitude is low, the parachute may not be fully deployed, or it may be difficult to provide the preset resistance after deployment, affecting the recovery effect. Moreover, in order to facilitate the opening of the parachute, the additional automatic parachute opening device and the weight of the parachute will increase the overall load of the ascending balloon and increase the overall length between the gondola and the ascending balloon, thereby increasing the difficulty of sending the ascending balloon. In addition, the flattening and folding of the parachute requires very high precision. If the folding is slightly uncomfortable, the parachute will most likely fail to open when the gondola is recovered next time, thereby increasing the risk of damage to the mission execution equipment and reducing the recovery efficiency of the mission execution equipment. Summary of the invention

[0004] The invention provides a high-altitude balloon system, which is used to solve the problem that the existing high-altitude balloon uses a parachute to recover a mission execution device, which has many interference factors and cannot ensure the recovery efficiency of the mission execution device.

[0005] The present invention provides a high-altitude balloon system, comprising: an ascending balloon, a cutting mechanism, a recovery balloon and a pod, wherein the bottom of the ascending balloon is connected to the bottom of the recovery balloon, and the recovery balloon is built into the interior of the ascending balloon, the pod is fixedly connected to the recovery balloon, and a mission execution device is installed in the pod; the cutting mechanism is installed on the outer wall of the ascending balloon, and is used to cut the ascending balloon when recovering the mission execution device; wherein the buoyancy of the recovery balloon is less than the total gravity of the load of the pod.

[0006] According to the present invention, a high-altitude balloon system is provided, wherein the interior of the ascending balloon and the interior of the recovering balloon are both filled with helium.

[0007] According to the present invention, a high-altitude balloon system is provided, which also includes a controller, a GPS sensor and an altitude sensor. The controller, the GPS sensor and the altitude sensor are all fixed in the pod. The controller is used to communicate with a ground station, the GPS sensor and the altitude sensor are both communicated with the controller, and the controller is communicated with the cutting mechanism.

[0008] According to the present invention, a high-altitude balloon system is provided, wherein the cutting mechanism is an electric cutter or a thermal release cutter.

[0009] According to the present invention, a high-altitude balloon system is provided, which also includes a releasing mechanism, wherein the releasing mechanism is fixed to the bottom of the recovery balloon, the recovery balloon is connected to the ascending balloon via the releasing mechanism, the releasing mechanism is communicatively connected to the controller, and the releasing mechanism is used to separate the ruptured ascending balloon and the recovery balloon after the cutting mechanism cuts the ascending balloon.

[0010] According to the present invention, a high-altitude balloon system is provided, wherein the release mechanism includes a pressure difference sensor, and the pressure difference sensor is used to monitor the pressure difference in the ascending balloon after the cutting mechanism cuts the ascending balloon. The pressure difference sensor is communicatively connected with the controller, and the controller is used to control the release mechanism to release the ascending balloon when the pressure difference in the ascending balloon reaches a preset pressure difference.

[0011] According to the present invention, a high-altitude balloon system is provided, which also includes a cable, one end of which is provided with a plurality of slings, the recovery balloon is provided with a plurality of lifting ears, the plurality of slings are connected to the plurality of lifting ears one by one, and the other end of the cable is connected to the locking hook of the pod.

[0012] According to the present invention, a high-altitude balloon system is provided, wherein the ratio of the critical volume of the ascending balloon to the critical volume of the recovery balloon is 30:1-50:1.

[0013] According to the present invention, a high-altitude balloon system is provided, wherein the ratio of the buoyancy of the recovery balloon to the total gravity of the pod and the mission execution equipment is 1:4 to 1:2.

[0014] According to the present invention, a high-altitude balloon system is provided, wherein the cutting mechanism is installed on the top of the ascending balloon.

[0015] The present invention provides a high-altitude balloon system. When the system is launched, the ascending balloon drives the cabin load to rise to a high altitude. The recovery balloon is connected to the ascending balloon and rises to a high altitude along with the ascending balloon. After the flight mission is completed, the cutting mechanism cuts the ascending balloon, and the buoyancy of the high-altitude balloon system is sharply reduced. Since the buoyancy of the recovery balloon is less than the total gravity of the cabin and the mission execution equipment, the recovery balloon slows down the cabin's falling speed and reduces the landing impact force of the cabin when the cabin descends by itself, thereby ensuring that the mission execution equipment is not damaged. The high-altitude balloon system of the present invention does not need to add a parachute and an automatic parachute opening device to the connecting rope, and has a simple structure. The load on the ascending balloon is greatly reduced, and only a small-volume ascending balloon is needed to meet the floating requirements of the high-altitude balloon system, which is conducive to cost saving; at the same time, the present invention can shorten the length of the connecting rope between the ascending balloon and the pod, thereby reducing the difficulty of launching the high-altitude balloon system, and the recovery balloon always maintains a gas saturated state throughout the entire process from launch to landing, is not easily affected by environmental factors, has strong stability, and can avoid the failure of the parachute to be deployed and cause damage to the mission execution equipment; in addition, the recovery balloon is easy to inflate and deflate, and does not need to be stacked flat after use, and is easy to operate. The present invention has fewer interference factors when recovering the mission execution equipment, and improves the recovery efficiency of the mission execution equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The figure is a schematic diagram of the structure of the high-altitude balloon system provided by the present invention when ascending.

[0018] Figure 2 The diagram is a schematic structural diagram of the high-altitude balloon system provided by the present invention when it is landing.

[0019] Reference numerals: 1. Ascending balloon; 2. Recovery balloon; 3. Gondola; 4. Cutting mechanism; 5. Cable; 6. Release mechanism. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The features of the terms "first" and "second" in the specification and claims of the present invention may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0022] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Combine the following Figure 1-Figure 2 , through specific embodiments and application scenarios, a high-altitude balloon system provided by an embodiment of the present invention is described in detail.

[0025] like Figure 1 and Figure 2As shown, the present invention provides a high-altitude balloon system, including: an ascending balloon 1, a cutting mechanism 4, a recovery balloon 2 and a pod 3. The bottom of the ascending balloon 1 is connected to the bottom of the recovery balloon 2, and the recovery balloon 2 is built into the interior of the ascending balloon 1. The pod 3 is fixedly connected to the recovery balloon 2. Mission execution equipment is installed in the pod 3. The cutting mechanism 4 is installed on the outer wall of the ascending balloon 1, and is used to cut the ascending balloon 1 when recovering the mission execution equipment. Among them, the buoyancy of the recovery balloon 2 is less than the total gravity of the load of the pod.

[0026] Specifically, Figure 1 As shown, the air inlet of the recovery balloon 2 and the air inlet of the ascending balloon 1 are fixedly connected. The recovery balloon 2 is embedded in the ascending balloon 1, and the recovery balloon 2 is located at the bottom of the ascending balloon 1. The ascending balloon 1 and the recovery balloon 2 are filled with light gas, which provides upward buoyancy for the high-altitude balloon system, so that the ascending balloon 1 and the recovery balloon 2 can rise at the same time. The light gases in the ascending balloon 1 and the recovery balloon 2 may be the same or different. For example, the ascending balloon 1 may be filled with hydrogen and the recovery balloon 2 may be filled with helium, or both the ascending balloon 1 and the recovery balloon 2 may be filled with hydrogen. The present invention does not make any specific limitation on this.

[0027] Among them, the volume of the ascending balloon 1 is much larger than that of the recovery balloon 2. During the ascent of the high-altitude balloon system, the buoyancy of the ascent is mainly provided by the light gas in the ascending balloon 1, so that the high-altitude balloon system can rise to a high altitude.

[0028] like Figure 1 and Figure 2 As shown, the pod 3 is fixedly installed below the ascending balloon 1 and the recovery balloon 2, and the pod 3 is fixedly connected to the recovery balloon 2. According to the requirements of the flight mission, various mission execution equipment is installed in the pod 3, such as meteorological equipment, optical cameras, laser radars, atmospheric composition analyzers, etc. The ascending balloon 1 drives the pod 3 to float to high altitude, and the mission execution equipment completes scientific tasks such as high-altitude reconnaissance, geographical monitoring, resource exploration, and meteorological monitoring.

[0029] like Figure 1 As shown, the cutting mechanism 4 is installed on the outer wall of the ascending balloon 1. After the flight mission is completed, the mission execution equipment needs to be recovered to the ground. At this time, the cutting mechanism 4 cuts through the ascending balloon 1, so that the light gas in the ascending balloon 1 is released, and the buoyancy of the high-altitude balloon system is sharply reduced. The buoyancy of the recovery balloon 2 is less than the total gravity of the load of the pod 3, so that the pod 3 can carry the mission execution equipment to the ground. During the descent of the pod 3, the recovery balloon 2 can slow down the falling speed of the pod 3 and reduce the landing impact force of the pod 3, thereby achieving buffering protection for the mission execution equipment in the pod 3, improving the recovery rate of the mission execution equipment, and avoiding damage to the mission execution equipment.

[0030] The present invention provides a high-altitude balloon system. When the system is launched, an ascending balloon 1 drives a pod 3 to rise to a high altitude. A recovery balloon 2 is connected to the ascending balloon 1 and rises to a high altitude along with the ascending balloon 1. After the flight mission is completed, a cutting mechanism 4 cuts through the ascending balloon 1. The buoyancy of the high-altitude balloon system is sharply reduced. Since the buoyancy of the recovery balloon 2 is less than the total gravity of the pod 3 and the mission execution equipment, when the pod 3 descends by itself, the recovery balloon 2 slows down the descent speed of the pod 3 and reduces the landing impact force of the pod 3, thereby ensuring that the mission execution equipment is not damaged. The high-altitude balloon system of the present invention does not need to add a parachute and an automatic parachute opening device to the connecting rope, and has a simple structure. The load on the ascending balloon 1 is greatly reduced, and only a small volume of the ascending balloon 1 is needed to meet the floating requirements of the high-altitude balloon system, which is conducive to cost saving; at the same time, the present invention can shorten the length of the connecting rope between the ascending balloon 1 and the pod 3, thereby reducing the difficulty of launching the high-altitude balloon system, and the recovery balloon 2 always maintains a gas saturated state throughout the entire process from launch to landing, is not easily affected by environmental factors, has strong stability, and can avoid the failure of the parachute to be deployed and cause damage to the mission execution equipment; in addition, the recovery balloon 2 is easy to inflate and deflate, and does not need to be stacked flat after use, and is easy to operate. The present invention has fewer interference factors when recovering the mission execution equipment, and improves the recovery efficiency of the mission execution equipment.

[0031] In some embodiments, the interior of the ascending balloon 1 and the interior of the recovery balloon 2 are both filled with helium. Using helium as the inflation gas for the ascending balloon 1 and the recovery balloon 2 makes the buoyancy of the high-altitude balloon system stable and has good lift-off performance throughout the flight. Compared with traditional high-altitude hydrogen balloons, the safety of the high-altitude balloon system is enhanced because helium is non-flammable. At the same time, since the ascending balloon 1 and the recovery balloon 2 use the same gas, the inflation process of the high-altitude balloon system is simplified, which helps to improve the operability and reliability of the high-altitude balloon system.

[0032] In some embodiments, the high-altitude balloon system further comprises a controller, a GPS sensor and an altitude sensor. The controller, the GPS sensor and the altitude sensor are all fixed in the pod 3. The controller is used to communicate with the ground station. The GPS sensor and the altitude sensor are both communicated with the controller. The controller is communicated with the cutting mechanism 4.

[0033] Among them, the GPS sensor is used to monitor the geographical location of the high-altitude balloon system. The GPS sensor sends the geographical location information to the controller, and the controller determines the current location of the high-altitude balloon system based on the geographical location information of the GPS sensor. When the controller determines that the high-altitude balloon system is about to fly to the border of another country, the controller immediately controls the cutting mechanism 4 to cut the ascending balloon 1, and under the buffering effect of the recovery balloon 2, the pod 3 carrying the load slowly descends to the ground. At the same time, the geographical location of the high-altitude balloon system is monitored in real time by the GPS sensor, which facilitates the ground staff to quickly find the landing position of the pod 3.

[0034] The altitude sensor is used to monitor and control the altitude of the high-altitude balloon system in real time. When the high-altitude balloon system flies to a height close to the limit, the controller controls the cutting mechanism 4 to cut the ascending balloon 1 to prevent the ascending balloon 1 from bursting by itself under the influence of air pressure and improve the stability of the pod 3 landing.

[0035] In some embodiments, the ascending balloon 1 is equipped with an automatic air pressure regulating valve. The automatic air pressure regulating valve is in communication with the controller. The altitude sensor sends the ascending altitude information of the high-altitude balloon system to the controller, and the controller controls the opening and closing state of the automatic air pressure regulating valve based on the above information to adjust the air pressure in the ascending balloon 1, so that the ascending balloon 1 always maintains the flight within the preset altitude, which facilitates the task execution equipment to carry out various tasks.

[0036] Among them, a satellite communication system can be used to realize wireless communication connection between the controller and the ground station. When the high-altitude balloon system is in a normal flight state but the staff urgently needs to retrieve it, a control instruction can be sent to the controller through the ground station so that the controller can control the cutting mechanism 4 to perform corresponding operations based on the control instruction.

[0037] In some embodiments, the cutting mechanism 4 is an electric cutter or a thermal release cutter.

[0038] In the case where the cutting mechanism 4 is an electric cutter, the electric cutter includes a driving motor and a blade. The driving motor is fixed to the outer wall of the ascending balloon 1. The blade is made of hard alloy material, which can withstand a large cutting load and is wear-resistant. The driving motor transmits power to the blade through the transmission system, so that the blade rotates or reciprocates quickly, thereby cutting the ascending balloon 1.

[0039] In the case where the cutting mechanism 4 is a thermal release cutter, the thermal release cutter uses a high-temperature heated cutting blade to cut the ascending balloon 1 by heat melting or fusing. The thermal release cutter converts electrical energy into thermal energy, so that the cutting blade is heated at a high temperature. When the temperature of the cutting blade reaches a certain level, the contact point between the ascending balloon 1 and the cutting blade can be quickly melted when the cutting blade contacts the ascending balloon 1, which has high stability and avoids the mechanical cutting method causing a sharp increase in the pressure difference between the inside and the outside of the ascending balloon 1, thereby affecting the landing stability of the high-altitude balloon system.

[0040] In some embodiments, Figure 1 and Figure 2 As shown, the high-altitude balloon system further includes a release mechanism 6. The release mechanism 6 is fixed to the bottom of the recovery balloon 2. The recovery balloon 2 is connected to the ascending balloon 1 through the release mechanism 6. The release mechanism 6 is in communication connection with the controller, and the release mechanism 6 is used to separate the ruptured ascending balloon 1 and the recovery balloon 2 after the cutting mechanism 4 cuts the ascending balloon 1.

[0041] Among them, the release mechanism 6 can be one of a servo unlocking mechanism and a mechanical unlocking mechanism. The release mechanism 6 has the function of receiving an unlocking signal, and can start unlocking according to the received unlocking signal to release the cut ascending balloon 1. Specifically, the release mechanism 6 is fixed to the bottom of the recovery balloon 2, and the release end of the release mechanism 6 is detachably connected to the bottom of the ascending balloon 1, thereby realizing a fixed connection between the ascending balloon 1 and the recovery balloon 2 during the ascent. When it is necessary to recover the mission execution equipment, the controller controls the cutting mechanism 4 to cut the ascending balloon 1, and then controls the release mechanism 6 to release the ruptured ascending balloon 1, so as to reduce the weight of the pod 3 when it descends and improve the stability of the pod 3 when it lands.

[0042] In a specific embodiment, the release mechanism 6 includes a pressure difference sensor. The pressure difference sensor is used to monitor the pressure difference in the ascending balloon 1 after the cutting mechanism 4 cuts the ascending balloon 1. The pressure difference sensor is connected to the controller for communication. The controller is used to control the release mechanism 6 to release the ascending balloon 1 when the pressure difference in the ascending balloon 1 reaches a preset pressure difference.

[0043] It is understandable that in the initial stage when the cutting mechanism 4 cuts the ascending balloon 1, a large amount of light gas still remains in the ascending balloon 1. If the ruptured ascending balloon 1 is released immediately after the ascending balloon 1 is cut, the flight positions of the recovery balloon 2 and the pod 3 may be shaken violently or changed drastically due to the drastic pressure difference change. The pressure difference sensor is fixed on the seat of the release mechanism 6, and the pressure difference sensor is located inside the ascending balloon 1 to monitor the pressure difference between the inside and outside of the ascending balloon 1 in real time. The controller determines whether the pressure difference between the inside and outside of the ascending balloon 1 is within the preset pressure difference range based on the pressure difference information of the pressure difference sensor. When the pressure difference inside the ascending balloon 1 reaches the preset pressure difference, the controller sends a release command to the release mechanism 6, so that the release mechanism 6 releases the ruptured ascending balloon 1, thereby ensuring the stability of the pod 3 when landing, preventing the pod 3 and the recovery balloon 2 from shaking violently in the air, and ensuring the safety of the mission execution equipment.

[0044] The high-altitude balloon also includes a cable 5. One end of the cable 5 is provided with a plurality of slings. The recovery balloon 2 is provided with a plurality of lifting ears. The plurality of slings are connected to the plurality of lifting ears one by one. The other end of the cable 5 is connected to a locking hook of the pod 3.

[0045] Among them, a plurality of lifting ears are arranged at equal intervals along the circumference of the bottom of the recovery balloon 2. The number of slings is consistent with the number of lifting ears. The plurality of slings and the plurality of lifting ears are fixedly connected in a one-to-one correspondence to ensure that the pod 3 can be stably suspended under the recovery balloon 2. A locking ring is provided at one end of the cable 5 close to the pod 3. The locking hook and the locking ring of the pod 3 are fixedly connected, thereby realizing a fixed connection between the recovery balloon 2 and the pod 3.

[0046] In some embodiments, the ratio of the critical volume of the ascending balloon 1 to the critical volume of the recovery balloon 2 is 30:1 to 50:1, so as to ensure the balance of the ascending balloon 1 and the recovery balloon 2 during flight. Optionally, the critical volume of the ascending balloon 1 can be 50 times, 45 times, 40 times, 35 times or 30 times the critical volume of the recovery balloon 2.

[0047] Preferably, the critical volume of the ascending balloon 1 is 40 times the critical volume of the recovery balloon 2, which can not only ensure that the recovery balloon 2 has sufficient landing buffer force for the gondola 3, but also reduce the load of the recovery balloon 2 on the ascending balloon 1 when the ascending balloon 1 rises, thereby ensuring the balance of the ascending balloon 1 and the recovery balloon 2 during flight.

[0048] In some embodiments, the ratio of the buoyancy of the recovery balloon 2 to the gravity of the cabin 3 load is 1:4~1:2, so as to reduce the impact of the recovery balloon 2 on the landing position of the cabin 3, ensure that the landing position of the cabin 3 is more controllable, avoid the cabin 3 being difficult to land due to excessive buoyancy of the recovery balloon 2 and prolonging the flight time of the cabin 3 in the air, and ensure that the recovery balloon 2 has sufficient landing cushioning force on the cabin 3.

[0049] Optionally, the ratio between the buoyancy of the recovery balloon 2 and the gravity of the load of the pod 3 is 1:4, 1:3, 1:2.5 or 1:2. Preferably, the ratio between the buoyancy of the recovery balloon 2 and the gravity of the load of the pod 3 is 1:3.

[0050] like Figure 1 As shown, the cutting mechanism 4 is installed on the top of the ascending balloon 1, that is, the cutting mechanism 4 is located at the position where the ascending balloon 1 is farthest from the recovery balloon 2, so as to ensure the stability of the cutting mechanism 4 when cutting the ascending balloon 1, and prevent the internal and external pressure difference of the ascending balloon 1 from changing sharply, causing the recovery balloon 2 and the cabin 3 to shake violently, thereby improving the stability of the cabin 3 when landing.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-altitude balloon system, characterized in that: include: An ascending balloon, a cutting mechanism, a recovery balloon and a pod, wherein the bottom of the ascending balloon is connected to the bottom of the recovery balloon, and the recovery balloon is built into the ascending balloon, the pod is fixedly connected to the recovery balloon, and a mission execution equipment is installed in the pod; the cutting mechanism is installed on the outer wall of the ascending balloon, and is used to cut the ascending balloon when recovering the mission execution equipment; wherein the buoyancy of the recovery balloon is less than the total gravity of the load of the pod.

2. The high-altitude balloon system according to claim 1, characterized in that: The interior of the ascending balloon and the interior of the recovery balloon are both filled with helium.

3. The high-altitude balloon system according to claim 1, characterized in that: It also includes a controller, a GPS sensor and an altitude sensor, wherein the controller, the GPS sensor and the altitude sensor are all fixed in the pod, the controller is used to communicate with a ground station, the GPS sensor and the altitude sensor are both communicated with the controller, and the controller is communicated with the cutting mechanism.

4. The high-altitude balloon system according to claim 3, characterized in that: The cutting mechanism is an electric cutter or a thermal release cutter.

5. The high-altitude balloon system according to claim 3, characterized in that: It also includes a releasing mechanism, which is fixed to the bottom of the recovery balloon. The recovery balloon is connected to the ascending balloon through the releasing mechanism. The releasing mechanism is communicatively connected to the controller. The releasing mechanism is used to separate the ruptured ascending balloon and the recovery balloon after the cutting mechanism cuts the ascending balloon.

6. The high-altitude balloon system according to claim 5, characterized in that: The release mechanism includes a pressure difference sensor, which is used to monitor the pressure difference in the ascending balloon after the cutting mechanism cuts through the ascending balloon. The pressure difference sensor is communicatively connected to the controller, and the controller is used to control the release mechanism to release the ascending balloon when the pressure difference in the ascending balloon reaches a preset pressure difference.

7. The high-altitude balloon system according to claim 5, characterized in that: It also includes a cable, one end of which is provided with a plurality of slings, the recovery balloon is provided with a plurality of lifting ears, the plurality of slings are connected to the plurality of lifting ears one by one, and the other end of the cable is connected to the locking hook of the pod.

8. The high-altitude balloon system according to claim 1, characterized in that: The ratio of the critical volume of the ascending balloon to the critical volume of the recovery balloon is 30:1 to 50:

1.

9. The high-altitude balloon system according to claim 1, characterized in that: The ratio of the buoyancy of the recovery balloon to the total gravity of the pod and the mission execution equipment is 1:4 to 1:

2.

10. The high-altitude balloon system according to claim 1, characterized in that: The cutting mechanism is mounted on the top of the ascending balloon.

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