阅读说明：本技术 适用于地外天体着陆探测的小型化数据记录与发射系统 (Miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection ) 是由 张松涛 刘辉 王云财 彭玉明 衣样 韩柠 王伟 杨伟光 董炀 李敬一 李伟楠 于 2020-07-31 设计创作，主要内容包括：本发明属于深空探测技术领域,具体涉及一种适用于地外天体着陆探测的小型化数据记录与发射系统,旨在解决现有技术中地外天体探测器着陆探测失败时无法获得数据的问题。本发明提供了一种适用于地外天体着陆探测的小型化数据记录与发射系统,其能够获取地外天体探测器着陆探测时关键数据,能够稳定记录并发射回传至中继通讯卫星等飞行器,确保在着陆探测失败时仍能够得到关键的数据信息,以便于后续故障诊断和深空探测任务的针对性改进设计提供重要数据支撑和参考,本发明具有广泛的应用前景。(The invention belongs to the technical field of deep space exploration, and particularly relates to a miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing exploration, aiming at solving the problem that data cannot be obtained when the extraterrestrial celestial body detector fails in the prior art. The invention provides a miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection, which can acquire key data during extraterrestrial celestial body detector landing detection, stably record and transmit the data back to aircrafts such as relay communication satellites and the like, and ensure that key data information can still be obtained when the landing detection fails, so that important data support and reference can be provided for subsequent fault diagnosis and targeted improvement design of deep space detection tasks.)

1. A miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection is characterized by comprising a buffer module which is connected with a detector and is provided with an accommodating space, and a payload which is arranged in the accommodating space, wherein the payload comprises a communication module, a data management module and a power supply module, and the data management module is respectively in communication connection with the communication module and the power supply module; the communication module comprises a first communication module and a second communication module which are in communication connection, and the first communication module is in communication connection with the detector and is used for acquiring and storing a first data signal sent by the detector; the second communication module comprises a first wireless transmission device and a second wireless transmission device, the first wireless transmission device is used for receiving a second data signal and sending the second data signal to the data management module, and the data management module controls the on-off state of the second wireless transmission device through the power supply module based on the second data signal.

2. The miniaturized data recording and transmitting system for extraterrestrial celestial body landing detection of claim 1, wherein the second wireless transmission device comprises a first data backhaul device and a second data backhaul device that are communicatively coupled; the first data backhaul device is arranged inside the accommodating space and used for transmitting the first data signal; the second data return equipment comprises a detection device and a plurality of omnidirectional antenna balls, and the omnidirectional antenna balls are uniformly arranged on the peripheral side of the buffer module through an ejection device; the ejection device is in communication connection with the detection device; the detection device is used for detecting the working state of the first data return equipment, and when the first data return equipment fails, the ejection device ejects the omnidirectional antenna balls to the outside of the buffer module.

3. The miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection of claim 1, wherein the power module comprises a first power device comprising a solar panel mechanism; the solar cell panel mechanism comprises a plurality of solar cell panels connected in a folding fan mode, and the plurality of solar cell panels can rotate around a central shaft under the driving of the power device.

4. The system of claim 3, wherein the first power supply device further comprises a dust-proof mechanism, the dust-proof mechanism comprises a rotating shaft, and the rotating shaft is coaxially arranged inside the central shaft; the dustproof mechanism further comprises a first dustproof member and a second dustproof member which are arranged above the plurality of solar panels connected in a folding fan mode, and dustproof films are fixed on the first dustproof member and the second dustproof member; the first dustproof member is provided with a first connecting section, the second dustproof member is provided with a second connecting section, and the first connecting section and the second connecting section are sequentially sleeved on the rotating shaft; the rotation shaft may rotate to separate or overlap the first dust-proof member and the second dust-proof member from each other up and down.

5. The system for recording and transmitting miniaturized data suitable for detecting landing of extraterrestrial celestial bodies according to claim 4, wherein the rotating shaft is provided with a first engaging portion tightly fitted with the first connecting segment and a second engaging portion loosely fitted with the second connecting segment, and the first engaging portion and the second engaging portion are distributed up and down along an axial direction of the rotating shaft; the cross-sectional area of the first clamping part is larger than that of the second clamping part.

6. The miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection of claim 5, wherein the first dust-proof member further comprises a first securing segment hinged to the first connecting segment; the second dust-proof component also comprises a second fixed section hinged with the second connecting section, and the rotating shaft can drive the first fixed section to rotate around the hinged part of the first fixed section and the first connecting section and the second fixed section to rotate around the hinged part of the second fixed section and the second connecting section by moving along the axial direction.

7. The miniaturized data logging and transmitting system for extraterrestrial celestial landing detection of claim 1, wherein the power module further comprises a second power device, the second power device comprising a battery.

8. The system for recording and transmitting miniaturized data suitable for detecting the landing of an extraterrestrial celestial body as claimed in claim 1, wherein the buffer module comprises at least two layers of shells, and a buffer structure formed by overlapping at least two buffer materials with different hardness is filled between any two adjacent shells.

9. The system of claim 2, wherein the omnidirectional antenna ball comprises a power supply mechanism, a detection mechanism and a plurality of antennas uniformly distributed along the spherical surface of the omnidirectional antenna ball, the detection mechanism is configured to detect the attitude of the omnidirectional antenna ball relative to the landing surface after landing, and the power supply mechanism supplies power to the antennas away from the landing surface based on the detection data of the detection mechanism.

10. The miniaturized data recording and transmitting system for extraterrestrial celestial landing detection of claim 9, wherein the detection mechanism comprises a gyroscope, a gravity sensor and an infrared sensor.

Technical Field

The invention belongs to the technical field of deep space exploration, and particularly relates to a miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing exploration.

Background

The extraterrestrial celestial body detection has the characteristics of severe environment, large uncertainty, large communication delay and the like, so that the extraterrestrial celestial body landing detection is extremely high in difficulty and risk.

Disclosure of Invention

The method aims to solve the problems in the prior art that data cannot be obtained when the extraterrestrial celestial body detector fails in landing detection. The invention provides a miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection, which comprises a buffer module connected with a detector and provided with an accommodating space, and a payload arranged in the accommodating space, wherein the payload comprises a communication module, a data management module and a power supply module, and the data management module is respectively in communication connection with the communication module and the power supply module; the communication module comprises a first communication module and a second communication module which are in communication connection, and the first communication module is in communication connection with the detector and is used for acquiring and storing a first data signal sent by the detector; the second communication module comprises a first wireless transmission device and a second wireless transmission device, the first wireless transmission device is used for receiving a second data signal and sending the second data signal to the data management module, and the data management module controls the on-off state of the second wireless transmission device through the power supply module based on the second data signal.

In some preferred embodiments, the second wireless transmission apparatus includes a first data backhaul device and a second data backhaul device that are communicatively connected; the first data backhaul device is arranged inside the accommodating space and used for transmitting the first data signal; the second data postback equipment includes detection device and a plurality of omnidirectional antenna ball, and is a plurality of omnidirectional antenna ball pass through ejection device evenly set up in buffer module week side, ejection device with detection device communication connection, detection device is used for detecting the operating condition of first data postback equipment, works as when first data postback equipment trouble, ejection device will be a plurality of omnidirectional antenna ball launches extremely the buffer module is outside.

In some preferred technical solutions, the power module includes a first power device, the first power device includes a solar panel mechanism, the solar panel mechanism includes a plurality of solar panels connected in a folding fan manner, and the plurality of solar panels can rotate around a central shaft under the driving of the power device.

In some preferred technical solutions, the first power supply device further includes a dust-proof mechanism, the dust-proof mechanism includes a rotating shaft, and the rotating shaft is coaxially disposed inside the central shaft; the dustproof mechanism further comprises a first dustproof member and a second dustproof member which are arranged above the plurality of solar panels connected in a folding fan mode, dustproof films are fixed on the first dustproof member and the second dustproof member, the first dustproof member is provided with a first connecting section, the second dustproof member is provided with a second connecting section, and the first connecting section and the second connecting section are sequentially sleeved on the rotating shaft; the rotation shaft may rotate to separate or overlap the first dust-proof member and the second dust-proof member from each other up and down.

In some preferred technical solutions, a first engaging portion closely fitted with the first connecting section and a second engaging portion clearance fitted with the second connecting section are provided on the rotating shaft, and the first engaging portion and the second engaging portion are distributed up and down along an axial direction of the rotating shaft; the cross-sectional area of the first clamping part is larger than that of the second clamping part.

In some preferred technical solutions, the first dust-proof component further includes a first fixing section hinged to the first connecting section, the second dust-proof component further includes a second fixing section hinged to the second connecting section, and the rotating shaft can drive the first fixing section to rotate around a hinge portion of the first fixing section and the first connecting section and the second fixing section to rotate around a hinge portion of the second fixing section and the second connecting section by moving in an axial direction.

In some preferred embodiments, the power module further includes a second power device, and the second power device includes a battery.

In some preferred technical solutions, the buffer module includes at least two layers of shells, and a buffer structure formed by stacking at least two buffer materials with different hardness is filled between any two adjacent shells.

In some preferred technical solutions, the omnidirectional antenna ball includes, inside, a power supply mechanism, a detection mechanism, and a plurality of antennas that are uniformly distributed along a spherical surface of the omnidirectional antenna ball, the detection mechanism is configured to detect a posture of the omnidirectional antenna ball relative to a landing surface after landing, and the power supply mechanism supplies power to the antenna that deviates from the direction of the landing surface based on detection data of the detection mechanism.

In some preferred technical solutions, the detection mechanism includes a gyroscope, a gravity sensor, and an infrared sensor.

The invention has the beneficial effects.

The miniaturized data recording and transmitting system is suitable for the landing detection of the extraterrestrial celestial body, can acquire key data during the landing detection of the extraterrestrial celestial body detector, can stably record and transmit the data back to the relay communication satellite and other aircrafts, ensures that key data information can be still obtained when the landing detection fails, and provides important data support and reference for subsequent fault diagnosis and targeted improvement design of deep space detection tasks.

The buffer module ensures the configuration of the system, provides an installation space for the effective load of the system, bears various load environments, and realizes the connection and separation of all parts in the system. Meanwhile, under the condition that the detector fails to land, the detector bears huge impact overload generated by hard landing, effectively prevents the low-frequency inertial extrusion force and the vibration force from damaging electronic devices, and ensures the normal work of the system effective load.

The communication module is set as a redundant communication device so as to improve the safety of the communication module and enhance the data transmission capacity; the power supply module is also configured by double power supplies, and efficiently utilizes the environmental energy of the extraterrestrial celestial body to supply power for the system; the miniaturized data recording and transmitting system reasonably distributes electric quantity, saves energy, and is safe and reliable.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an overall structure of a miniaturized data recording and transmitting system suitable for extraterrestrial celestial body landing detection according to an embodiment of the present invention.

Fig. 2 is a schematic view of a buffering structure of a buffering module according to an embodiment of the present invention.

Fig. 3 is a diagram of a second wireless transmission device according to an embodiment of the invention.

Fig. 4 is a first expanded schematic view of a solar panel mechanism according to an embodiment of the present invention.

Fig. 5 is a second expanded schematic view of the structure of the solar panel mechanism according to an embodiment of the invention.

Fig. 6 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention.

Fig. 7 is a first structural diagram of a dust-proof component according to an embodiment of the present invention.

Fig. 8 is a second schematic structural view of the dust-proof member according to an embodiment of the present invention.

Fig. 9 is an exploded view of a first power device according to an embodiment of the invention.

List of reference numerals: 1-a first buffer part, 2-a second buffer part, 3-a solar panel, 4-a central shaft, 5-a rotating shaft, 6-a first clamping part, 7-a second clamping part, 8-a first dustproof member, 9-a first connecting section, 10-a first fixing section, 11-a second dustproof member, 12-a second connecting section, and 13-a second fixing section.

Detailed Description

In order to make the embodiments, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

The miniaturized data recording and transmitting system suitable for the landing detection of extraterrestrial celestial bodies comprises a buffer module which is connected with a detector and is provided with an accommodating space, and a payload which is arranged in the accommodating space, wherein the payload comprises a communication module, a data management module and a power supply module, and the data management module is respectively in communication connection with the communication module and the power supply module; the communication module comprises a first communication module and a second communication module which are in communication connection, and the first communication module is in communication connection with the detector and is used for acquiring and storing a first data signal sent by the detector; the second communication module comprises a first wireless transmission device and a second wireless transmission device, the first wireless transmission device is used for receiving a second data signal and sending the second data signal to the data management module, and the data management module controls the on-off state of the second wireless transmission device through the power supply module based on the second data signal.

In order to more clearly illustrate the miniaturized data recording and transmitting system of the present invention applied to extraterrestrial celestial body landing detection, a preferred embodiment of the present invention will be described in detail below with reference to fig. 1-9.

As a preferred embodiment of the invention, the miniaturized data recording and transmitting system suitable for the landing detection of the extraterrestrial celestial body is suitable for the extraterrestrial body, such as Mars. The miniaturized data recording and transmitting system comprises a buffer module which is connected with a detector and is provided with an accommodating space, and a payload which is arranged in the accommodating space, wherein the buffer module is used for supporting and fixing the payload to form an integral miniaturized data recording and transmitting system with the payload so as to bear various mechanical environments and space environments when the detector carries, transmits and operates in the space. In the preferred embodiment of the invention, the buffer module adopts a stepped buffer structure formed by combining a 'food steamer' isolation cabin and multiple layers, so that the damage of low-frequency inertial extrusion force and vibration force to the effective load can be effectively prevented. The buffer module can ensure that the normal work of the effective load in the miniaturized data recording and transmitting system can be ensured after the detector is impacted with a celestial body or is landed away from a flight line after landing failure.

Further, the buffer module comprises at least two layers of shells, a buffer structure formed by overlapping at least two buffer materials is filled between any two adjacent shells, and the effective load is covered and arranged in the shells by the buffer structure, namely, the shells are shell-buffer structure-effective load. In the preferred embodiment of the present invention, the cushioning structure of the present invention is shown in the figure, and is formed by folding and overlapping a first cushioning material and a second cushioning material, and the hardness of the second cushioning material is higher than that of the first cushioning material. Referring to the figures, a first cushioning material is folded to form a first cushioning portion 1, a second cushioning material is folded to form a second cushioning portion 2, the first cushioning portion 1 has a height greater than the height of the second cushioning portion 2, and the first cushioning portion 1 is adapted to contact a shell or payload; the first buffer part 1 and the second buffer part 2 are tightly matched to form a buffer group, and a plurality of buffer groups are uniformly distributed in the shell of the invention for buffering and damping so as to protect the effective load. When the invention lands, the first buffer part 1 of the buffer structure is pressed by the shell or the payload to be extruded downwards, the first buffer part 1 of the buffer structure is the first-stage shock absorption protection, when the first buffer part 1 is extruded to the same height as the second buffer part 2, the extruded first buffer part 1 and the second buffer part 2 are closely matched together to protect the shell or the payload, and the second-stage shock absorption protection is adopted to eliminate the force applied to the payload of the invention so as to reduce the damage of the payload. It should be noted that, in the schematic diagram of the present invention, the shell has a square structure, and those skilled in the art can optionally set the structure according to actual situations, and the buffer material is uniformly arranged along the structure, for example, the shell is set to be a capsule body, a cylinder, or the like.

The primary function of the outer shell in a two-layer shell is to ensure that the shell does not break upon landing failure of a sonde or other landing gear, thereby protecting the inner shell and payload within the system of the present invention. When the system is used for carrying the detector, the outer shell can adopt a structure similar to a funnel, and the weight of the shell is reduced as much as possible on the premise of ensuring that the overload resistance meets the requirement; the inner shell can adopt a cylindrical structural design, so that enough space is ensured for installing the effective load, and a buffer structure is used for filling the residual cavity of the shell for protecting all the effective loads in the shell; the upper cover of the inner shell adopts a U-shaped structure and is in threaded connection with the inner shell, so that sufficient threaded connection is ensured, and the structural weight is reduced.

Furthermore, because the first buffer material and the second buffer material are arranged in a folding mode, the using amount of the buffer materials can be increased in the same space, the buffer effect is increased, the protection layer level of the effective load is improved, and the safety and the stability of the effective load are guaranteed.

In a preferred embodiment of the present invention, the payload of the present invention mainly includes a communication module, a data management module, and a power module, wherein the data management module is in communication connection with the communication module and the power module, respectively; the power supply module is used for supplying power to the data management module and the communication module; it should be noted that the payload of the present invention also includes common systems of an aircraft, such as a thermal control system, and the description of the common systems and devices of the aircraft, such as the thermal control system, is not within the description scope of the present invention.

In the preferred embodiment of the invention, the outer surfaces of the modules such as the payload entry communication module, the data management module, the power supply module and the like in the system are all provided with the buffer structure formed by overlapping the two buffer materials, the buffer structure has light weight, can limit the position while damping and protecting, and ensures that the payload of the invention is impacted and cannot move when the detector fails to land.

Further, the communication module comprises a first communication module and a second communication module, the first communication module and the second communication module are in communication connection with each other, specifically, the first communication module is in communication connection with the detector and is used for acquiring and storing a first data signal sent by the detector; in a preferred embodiment of the present invention, the first data is telemetry data of the probe, landing data, and the landing data includes data of the probe during landing, such as orbit, velocity, acceleration, angle, attitude, control signal, etc. of the probe corresponding to the change of the landing distance of the target. Telemetry data, landing data, are important data needed by those skilled in the art in deep space exploration, and include various data, which are not listed here. In a preferred embodiment of the present invention, the first communication module performs wifi wireless communication according to a networking protocol for microwave communication with the detector. In the landing process of the detector, the first communication module receives and stores a first data signal transmitted by the microwave communication terminal of the detector according to the instruction requirement, and the second communication module communicates and returns the first data signal in an ultrahigh frequency (UHF) communication mode.

Further, in this embodiment, the first communication module is installed in the inner housing of the buffer module and fixed by using potting adhesive, and a buffer layer is added between the inner housing and the outer housing for reducing stress wave transmission and increasing buffer stroke, thereby reducing instantaneous overload and average overload. In order to prevent the first communication module from being separated from the shell by reverse acting force, on one hand, the antenna is fixed by the pressing ring, meanwhile, the concave groove is additionally arranged in the shell, the surface area is increased by bending the concave groove, and the friction force is improved.

Further, the second communication module comprises a first wireless transmission device and a second wireless transmission device, wherein the first wireless transmission device is in a normally open state and used for receiving a second data signal, the first wireless transmission device sends the second data signal to the data management module after receiving the second data signal, and the data management module controls the dormancy and the working state, namely the switch state, of the second wireless transmission device through the power supply module based on the second data signal. The second data signal in the invention is a data signal sent by external aircrafts such as an orbiter, a surround, a relay communication satellite and the like; when the probe fails to land, the external aircraft sends out a signal for searching the probe or sends out a pulse signal containing a fixed data code, for convenience of description, the signal is recorded as a second data signal, the first wireless transmission device transmits the second data signal to the data management module after receiving the second data signal, the data management module analyzes based on the second data signal to confirm establishment of a communication link and generate a control signal of the second wireless transmission device, namely, a switch of the second wireless transmission device is turned on, so that the landing data of the probe, namely the first data signal, can be transmitted back to the external aircraft such as the surround device. When the miniaturized data recording and transmitting system and the surround are not visible, the second wireless transmission device enters the sleep state again.

The surround device can send pulse signals containing fixed data codes to the miniaturized data recording and transmitting system according to the fixed program, when the first wireless transmission device continuously receives the fixed data code signals sent by the plurality of surround devices, the establishment of a communication link is confirmed, and the second wireless transmission device wakes up to start up to transmit the first data signals back to the surround devices. When the miniaturized data recording and transmitting system and the surround are not visible, the second wireless transmission device enters the sleep state again.

Furthermore, the data management module of the invention is used as a data management control platform of the miniaturized data recording and transmitting system of the invention, and mainly completes the functions of energy distribution, data management, information processing and the like. The sensor adopts MEMS technology to realize integrated design, and the data management module also comprises a low-power chip which is configured to reasonably distribute the on-off time of the power amplifier based on a visible arc section and optimize the on-off control strategy. Namely, after the first wireless transmission device fails and cannot receive the signal of the external aircraft, the data management module can reasonably distribute the on-off time of the power amplifier and the on-off time of the second wireless transmission device through the chip to consume the minimum electric quantity to receive the signal of the external aircraft. The data management module of the invention is based on the idea of single-board design, takes a microprocessor and a Field Programmable Gate Array (FPGA) as a core, forms a simplified embedded computer system, and autonomously manages the miniaturized data recording and transmitting system according to the sensor information in the miniaturized data recording and transmitting system; analyzing and executing the received instruction; storing and transmitting the key telemetry data of the landing process. The instructions include instructions for a landing probe or for an aircraft such as a surround coupled to the system of the present invention.

In some preferred embodiments of the present invention, referring to the figures, the second wireless transmission means comprises a first data backhaul device and a second data backhaul device, the first data backhaul device and the second data backhaul device being communicatively coupled to each other; the first data backhaul device is disposed inside the accommodating space of the buffer module, i.e., inside the housing. The first data backhaul device is used for transmitting a first data signal after the second wireless transmission device is started. The first data returning device and the second data returning device both adopt the technologies of data compression, anti-interference, coherent reception and the like, and effective transmission of signals is guaranteed.

The second data return equipment comprises a detection device, an ejection device and a plurality of omnidirectional antenna balls, the omnidirectional antenna balls are uniformly arranged on the periphery of the shell of the buffer module through the ejection device, the control end of the ejection device is in communication connection with the detection device, the detection device is used for detecting the working state of the first data return equipment, and when the first data return equipment fails, the ejection device ejects the omnidirectional antenna balls to the outside of the shell of the buffer module. The plurality of omnidirectional antenna balls are uniformly distributed along the peripheral side of the buffer module, and after being transmitted, the plurality of omnidirectional antenna balls can jointly form an antenna net in a fitting shape, so that the first data signal can be better transmitted back to the aircraft.

In particular, the ejection device may be a hydraulically driven mechanically separate hydraulic ejector. Or, in some preferred embodiments, the buffer module outer casing comprises a plurality of spaces uniformly arranged along the axial direction thereof, and comprises a first assembling part arranged along the radial direction of the outer casing, wherein the first assembling part is provided with a first through hole which is communicated with the inner space; the ejection device is arranged in the inner space and comprises an ejection rod and a driving assembly, the driving assembly is in communication connection with the detection device, the ejection rod penetrates through the first through hole of the first assembling portion, when the driving assembly is not driven, the top end of the ejection rod is located at the first position, and when the driving assembly is driven, the top end of the ejection rod is ejected to the second position by the driving assembly; when the first assembling portion is connected with the omnidirectional antenna ball in an inserting mode, and the driving assembly receives signals of the detection device, the driving assembly is driven, the top end of the ejection rod is ejected to the second position, and therefore the omnidirectional antenna ball is ejected and separated from the first assembling portion.

Further, a power supply mechanism, a detection mechanism and a plurality of independent antenna units which are uniformly distributed along the spherical surface of the omnidirectional antenna ball are arranged in the omnidirectional antenna ball, wherein the detection mechanism is used for detecting the posture of the omnidirectional antenna ball relative to the landing surface after landing, the power supply mechanism supplies power to the antenna units deviating from the direction of the landing surface based on the detection data of the detection mechanism, and specifically, the detection mechanism comprises a gyroscope, a gravity sensor and an infrared sensor. Those skilled in the art can understand that a plurality of antenna units uniformly distributed along the spherical surface of the omnidirectional antenna ball can be controlled independently, for example, when the omnidirectional antenna ball falls to an extraterrestrial celestial body, the detection mechanism can detect that part of the antennas of the landing surface of the omnidirectional antenna are pressed, and data signals cannot be transmitted, so that power supply for the pressed part of the antennas of the landing surface is not needed, the detection mechanism transmits the detected signals of the attitude, the direction and the like of the antennas of the omnidirectional antenna ball to the power supply mechanism, that is, the power supply mechanism only needs to supply power to a plurality of antennas which deviate from the landing surface and can successfully transmit the data signals, so as to reasonably distribute electric quantity, and make the transmission time of the omnidirectional antenna ball longer.

Preferably, the outer surface of the omnidirectional antenna ball is covered with a protective shell, a plurality of elastic members distributed along the surface of the omnidirectional antenna ball body structure are arranged in the protective shell, and the omnidirectional antenna ball is connected with the protective shell through the elastic members. The elastic component can fall to the ground to the protection of omnidirectional antenna ball when landing, and the extrusion force that produces when being located a plurality of elastic component of omnidirectional antenna ball landing surface can absorb omnidirectional antenna ball and landing surface contact to reduce the damage of omnidirectional antenna ball, the elastic component who deviates from omnidirectional antenna ball landing surface can restrict the displacement of omnidirectional antenna ball relative to the inside of protective housing, reduces the vibration of omnidirectional antenna ball, reduces the vibrational force.

Meanwhile, in a preferred embodiment of the present invention, the elastic member is preferably a disc spring set, and a hollow structure inside the disc spring set enables the inner surface of the disc spring set to reflect all radio waves of an internal antenna unit, so as to enhance the signal transmitting and receiving capabilities of the antenna unit, and originally transmit 360-degree spherical waves, and after the elastic member is additionally arranged on the disc spring set, the signals can be concentrated to 180 degrees, so as to enhance the signal strength of the internal antenna unit, i.e., enhance the communication capability of the omnidirectional antenna ball of the present invention.

In other preferred embodiments of the present invention, the power module includes a first power device and a second power device, wherein the first power device includes a solar panel mechanism and a dust-proof mechanism, and the first power device is a retractable device which can extend above the buffer module to convert solar energy into electric energy to power the system of the present invention; the second power supply device comprises a storage battery which is arranged in the buffer structure, is electrically connected with the first power supply device and can supply power to the data management module and the communication module. Specifically, the figure illustrates a schematic structural diagram of a first power supply device, which includes a plurality of solar panels 3 connected in a folding fan manner, and the plurality of solar panels can rotate around a central shaft under the driving of a power device. The rotation axis of the plurality of solar panels 3 connected in a fan-folding manner is a central axis 4. Further, in the preferred embodiment of the present invention, the solar panels 3 are rotated to be located on the same plane; in other preferred embodiments of the present invention, the solar panels 3 are rotated to form a step-spiral type, and the solar panel 3 at the head end and the solar panel 3 at the tail end are not in the same plane. The arrangement also enables the first power supply device to absorb solar energy to supply power for the system.

In the preferred embodiment of the present invention, the central shaft 4 is a hollow shaft, and a retractable dust-proof mechanism is arranged in the hollow shaft. The dustproof mechanism comprises a rotating shaft 5, and the rotating shaft 5 is coaxially arranged inside the central shaft 4; the dustproof mechanism further comprises a first dustproof member 8 and a second dustproof member 11 which are arranged above the plurality of solar panels 3 which are connected in a folding fan mode, dustproof films are fixed on the first dustproof member 8 and the second dustproof member 11, the first dustproof member 8 is provided with a first connecting section 9, the second dustproof member 11 is provided with a second connecting section 12, and the first connecting section 9 and the second connecting section 12 are sequentially sleeved on the rotating shaft 5; the rotation shaft can rotate to separate the first dust-proof member 8 and the second dust-proof member 11 from each other up and down or to overlap each other.

Referring to the drawings, the rotating shaft of the present invention is provided with a first engaging portion 6 closely fitted with the first connecting section 9, and a second engaging portion 7 clearance fitted with the second connecting section 12, and the first engaging portion 6 and the second engaging portion 7 are distributed up and down along the axial direction of the rotating shaft 5; in a preferred embodiment of the present invention, the cross-sectional area of the first engaging portion 6 is larger than the cross-sectional area of the second engaging portion 7.

In some preferred embodiments of the present invention, the first connecting section 9 is provided with a shaped hole, and the first engaging portion 6 includes at least two acting surfaces that are tightly fitted with the first connecting section 9, and specifically, in some preferred embodiments of the present invention, the acting surfaces include a first acting surface and a second acting surface that are connected along the rotation axis and are mutually angled, and the shaped hole can be simultaneously fitted with the first acting surface and the second acting surface, and when the rotation axis rotates around its own axis, the shaped hole of the first connecting section 9 can rotate synchronously under the action of the two acting surfaces. In the embodiment of the invention illustrated in the drawings, the number of the action surfaces is three, the three action surfaces are respectively connected and closed along the rotating shaft, the three action surfaces mutually form a certain angle, the special-shaped holes are simultaneously matched with the three action surfaces, and when the rotating shaft rotates around the self axial direction, the special-shaped holes of the first connecting end 9 can synchronously rotate under the action of the three action surfaces. In other preferred embodiments of the present invention, the first engaging portion 6 includes four acting surfaces, such as a quadrilateral, which are tightly fitted with the first connecting section 9, and those skilled in the art can flexibly set the structure of the first engaging portion according to practical situations, as long as the cross-sectional area of the first engaging portion 6 is larger than that of the second engaging portion 7, and the cross-sectional area of the first engaging portion 6 is larger than that of the second engaging portion to ensure the stress strength of the first engaging portion.

Further, in a preferred embodiment of the present invention, a center of a cross section of the first engaging portion is provided on an axis of the rotating shaft; the cross-sectional area of the first clamping part is an inner tangent triangle of the cross section of the rotating shaft, and the triangle is an equilateral triangle which can ensure that the stress intensity of the close fit between the rotating shaft and the first connecting end is maximum and the stress is uniform.

Referring to the drawings, the rotating shaft 5 of the present invention is a cylinder, the cross-sectional structure of the first engaging portion 6 is preferably triangular, the cross-sectional structure of the second engaging portion 7 is circular, and the second engaging portion 7 is in clearance fit with the second connecting section 12, i.e. when the rotating shaft 5 rotates, the second connecting section does not drive the second dust-proof component to rotate; the first engaging portion 6 is tightly engaged with the first connecting portion 11, that is, when the rotating shaft 5 rotates, the first connecting portion drives the first dust-proof member to rotate synchronously with the rotating shaft 5, so that the rotating shaft 5 can rotate to separate the first dust-proof member 8 and the second dust-proof member 11 from each other or to overlap each other to open or overlap the dust-proof film. It should be noted that, the first dustproof member and the second dustproof member are both disposed above the solar cell panel 3 in an open state, so as to prevent the first dustproof member and the second dustproof member from being exposed outside for a long time and prevent dust from adhering to the surface of the first dustproof member and the second dustproof member, thereby reducing the adhering speed of the dust, reducing the cleaning frequency of the solar cell panel, prolonging the service life of the solar cell panel, enhancing the conversion efficiency of solar energy, and ensuring the power generation rate.

Further, the first dust-proof component 8 further includes a first fixing section 10 hinged to the first connecting section 9, the second dust-proof component 11 further includes a second fixing section 13 hinged to the second connecting section 12, and the rotating shaft 5 can move axially to drive the first fixing section 10 to rotate around a hinge portion between the first fixing section 10 and the first connecting section 9, and the second fixing section 12 to rotate around a hinge portion between the second fixing section 12 and the second connecting section 12. Under conventional conditions, the linkage segment of dustproof component can be around rotation axis 0~360 rotatory, and the canned paragraph can be around linkage segment 0~180 rotatory. In other preferred embodiments of the present invention, the solar panels 3 connected in a folding fan manner are in a step-shaped spiral shape after being rotated and opened, and at this time, because the fixing section and the connecting section are hinged, the dustproof film on the dustproof member can also cover the solar panel mechanism in a step-shaped spiral shape along with the change of the shape of the solar panel mechanism.

Referring to the drawings, because the rotating shaft 5 is arranged inside the central shaft 4, when the dustproof film is covered on the solar cell panel, the rotating shaft 5 moves downwards along the axial direction of the rotating shaft 5, and because the opening of the central shaft 4 is limited, the first fixing section 10 and the second fixing section 13 passively rotate around the hinged parts of the first fixing section and the second connecting section 9 and 12 respectively, so that the state shown in fig. 8 is presented, at the moment, dust on the dustproof film can fall back to the inside of the central shaft 4, a dust recovery device is arranged inside the central shaft 4, the dust recovery device comprises an annular cylinder with the lower end sealed and the upper end opened, and the annular cylinder and the central shaft are coaxially arranged. The dust-collecting device can store dust and bring the dust back to the earth for testing. It is understood that the outer diameter of the rotating shaft 5 is in clearance fit with the inner diameter of the central shaft 4, and in summary, it can be understood by those skilled in the art that the rotating shaft 5 moves up and down along its own axial direction to open or contract the first dust-proof member and the second dust-proof member, and the rotating shaft 5 rotates along its own axial direction to open or overlap the dust-proof film. Furthermore, a person skilled in the art can obliquely arrange the solar cell panel, that is, one end close to the central shaft is located at a high position, meanwhile, the first fixing section and the second fixing section are provided with tracks along the length direction, and the hinging sections of the first fixing section and the second fixing section are provided with clamping parts, so that when the length of the central shaft is insufficient, the first fixing section and the second fixing section can fall down and retract into the central shaft in a vertical state; when the rotating shaft 5 rises to make the first fixing member and the second fixing member extend out above the solar cell panel to arrange the dustproof film, the first fixing section and the second fixing section can automatically fall down due to the inclined arrangement of the solar cell panel, so that the clamping part is clamped with the first connecting section and the second connecting section. In another set of embodiments of the present invention, the first and second fixed segments are folding telescoping members. It is understood that the dustproof mechanism of the present invention further includes a driving device, an output shaft of the driving device is connected with the rotating shaft 5, and the driving device can drive the rotating shaft 5 to rotate or move along the axial direction of the driving device.

In some preferred embodiments, the second power supply device of the present invention includes a control circuit, the control circuit has an internal and external electrical conversion execution function, and can realize switching between different power supply conditions, such as power supply of the detector to the miniaturized data recording and transmitting system and power supply of the inside of the miniaturized data recording and transmitting system, and the second power supply device further includes a lithium battery and a silver oxide battery. When the detector normally lands and the miniaturized data recording and transmitting system is connected with the detector, the detector provides input voltage to supply power to the miniaturized data recording and transmitting system; when the detector fails to land, the detector cannot be used as a miniaturized data recording and transmitting system, power is supplied by a power module inside the system at the moment, if the power supply voltage of the lithium battery is higher than the power supply voltage of the silver oxide battery, the lithium battery supplies power to the miniaturized data recording and transmitting system, and if the power supply voltage of the lithium battery is lower than the power supply voltage of the silver oxide battery, the silver oxide battery supplies power to the miniaturized data recording and transmitting system. The lithium battery and the silver oxide battery both adopt a double backup design, so that the power supply reliability of the miniaturized data recording and transmitting system is improved.

The miniaturized data recording and transmitting system can be periodically started up and self-checked along with the detector in the cruising stage, and sends self-checking data to the detector; in the descending landing stage, the system can communicate with a detector in a wireless communication mode after being started, and receives and stores key telemetering data sent by the detector; under the normal landing condition, the detector supplies power, and the system can be used as backup UHF communication to send data information to aircrafts such as a surround device and the like; under the fault damage state when the detector lands, the system can survive under the condition of a celestial body outside a hard landing ground, and has the capability of communicating with aircrafts such as a surround device. The miniaturized data recording and transmitting system adopts a high-integration, miniaturized and low-power-consumption design, can be flexibly installed on the landing detector, and can record, store and transmit the key data in the whole landing process under the fault conditions such as hard landing and the normal landing condition, thereby providing important guarantee and data reference for the implementation of engineering tasks.

The technical solutions in the embodiments of the present application at least have the following technical effects and advantages.

The miniaturized data recording and transmitting system is suitable for the landing detection of the extraterrestrial celestial body, can acquire key data during the landing detection of the extraterrestrial celestial body detector, can stably record and transmit the data back to the relay communication satellite and other aircrafts, ensures that key data information can be still obtained when the landing detection fails, and provides important data support and reference for subsequent fault diagnosis and targeted improvement design of deep space detection tasks.

The buffer module ensures the configuration of the system, provides an installation space for the effective load of the system, bears various load environments, and realizes the connection and separation of all parts in the system. Meanwhile, under the condition that the detector fails to land, the detector bears huge impact overload generated by hard landing, effectively prevents the low-frequency inertial extrusion force and the vibration force from damaging electronic devices, and ensures the normal work of the system effective load.

The communication module is set as a redundant communication device so as to improve the safety of the communication module and enhance the data transmission capacity; the power supply module is also configured by double power supplies, and efficiently utilizes the environmental energy of the extraterrestrial celestial body to supply power for the system; the miniaturized data recording and transmitting system reasonably distributes electric quantity, saves energy, and is safe and reliable.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.