Field material situation dynamic tracking system

Abstract

The utility model discloses a field material situation dynamic tracking system, which comprises an Internet of Things satellite, a satellite ground station, a ground wireless base station, a data center and at least one Internet of Things terminal, and the Internet of Things terminal is installed on a material packaging unit or transportation equipment. The internet-of-things terminal is in wireless connection with the ground wireless base station and the internet-of-things satellite, the internet-of-things satellite is in wireless connection with the satellite ground station, and the data center is connected with the ground wireless base station and the satellite ground station. According to the field material situation dynamic tracking system, information is transmitted through ground network information, field material situation dynamic tracking is achieved, a low-orbit Internet of Things satellite is adopted to construct a space-based information link to serve as a material information transmission enhancing and expanding means, two data return links are complementary, and the field material situation dynamic tracking effect is achieved. Effective dynamic tracking of field materials is improved, and chain breakage, link loss and state out-of-control of the materials are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to material information management field, more specifically, the utility model relates to a field material situation dynamic tracking system. BACKGROUND

[0002] In the field environment, materials are stacked and stored in a fixed point or transported by a transport vehicle, and the environment is difficult to determine in advance. Due to the limitations of the natural conditions of the ground surface terrain and the network information foundation, the location of part of the materials, the Internet of Things equipment cannot communicate with the ground wireless base station, the Internet of Things equipment is disconnected, the material state information cannot be returned to the data center, and the material situation tracking cannot be realized.

[0003] Patent document CN220457441U discloses a field material information collection and transmission system based on a unmanned aerial vehicle, which comprises a command platform, a unmanned aerial vehicle and at least one field material sensing device. Each field material sensing device corresponds to a combat team. The unmanned aerial vehicle comprises an image collection unit, an active tag reading unit, an image analysis unit, a wireless communication unit, a Beidou positioning unit and a storage unit. Each field material sensing device comprises an active radio frequency tag. The field material sensing device is installed on the field material of the combat team and is wirelessly remotely connected with the active tag reading unit in the unmanned aerial vehicle. The unmanned aerial vehicle is wirelessly connected with the command platform. The unmanned aerial vehicle reaches the target position and collects the material information of each combat team by using image and radio frequency sensors. After the unmanned aerial vehicle returns, the collected material information is wirelessly transmitted to the command platform, so as to realize convenient, flexible and intelligent collection and transmission of the material information in front of the unmanned aerial vehicle and efficient allocation of the material.

[0004] In the prior art, the material in the field environment is dynamically tracked, and the ground base station is used for information transmission of the material. Due to the limitation of the distribution of the ground base station, the material cannot be effectively tracked in the area without the ground base station, which may cause the material to be disconnected and out of control.

[0005] Therefore, it is necessary to propose a field material situation dynamic tracking system to solve the problems in the prior art. SUMMARY

[0006] A series of simplified concepts are introduced in the summary part of the utility model, which will be further described in detail in the specific embodiment part. The summary part of the utility model does not mean to try to limit the key features and necessary technical features of the claimed technical solution, and does not mean to try to determine the protection scope of the claimed technical solution.

[0007] In order to at least partially solve the above problems, the utility model provides a kind of field material situation dynamic tracking system, comprising: internet of things satellite, satellite ground station, ground wireless base station, data center and at least one internet of things terminal, internet of things terminal is installed on material container unit or transport equipment;Internet of things terminal is wirelessly connected with ground wireless base station and internet of things satellite, and internet of things satellite is wirelessly connected with satellite ground station, and data center is connected with ground wireless base station and satellite ground station respectively.

[0008] Preferably, the internet of things terminal comprises a positioning module, an environment information acquisition module, and a wireless communication module, the positioning module, the environment information acquisition module, and the wireless communication module are electrically connected;

[0009] The positioning module is configured to obtain position information of the material container unit or the transport equipment.

[0010] The environment information acquisition module is configured to acquire environment information of the material container unit or the transport equipment.

[0011] The wireless communication module is configured to send the position information and the environment information to the data center via the internet of things satellite and the ground wireless base station.

[0012] Preferably, the internet of things terminal further comprises an information storage module, the information storage module is configured to store material information on the material container unit or the transport equipment, and the wireless communication module is configured to synchronously send the material information to the data center when sending the position information and the environment information to the data center.

[0013] Preferably, the environment information acquisition module comprises a pressure sensor, a temperature sensor, a humidity sensor, and a gas sensor, and the pressure sensor, the temperature sensor, the pressure sensor, and the gas sensor are electrically connected with the wireless communication module.

[0014] Preferably, the wireless communication module comprises at least a LoRa communication submodule, an NB-loT communication submodule, and a satellite communication submodule.

[0015] Preferably, the internet of things terminal further comprises a power module, which is electrically connected with the positioning module, the environment information acquisition module, and the wireless communication module, and is configured to supply power to the positioning module, the environment information acquisition module, and the wireless communication module.

[0016] Preferably, the data center comprises a data receiving unit, a processor, a storage unit, and a display unit.

[0017] The data receiving unit is configured to receive information sent by the ground wireless base station and the satellite ground station.

[0018] The processor is electrically connected with the data receiving unit, the storage unit, and the display unit, and is configured to convert the information received by the data receiving unit into a data signal and display the data signal on the display unit.

[0019] The storage unit is configured to store the data signal;

[0020] The display unit is configured to display the data signal sent by the processor.

[0021] Preferably, the Internet of Things satellite comprises a plurality of non-geostationary satellites.

[0022] Preferably, the plurality of Internet of Things satellites are connected to the satellite ground station via the wireless communicator.

[0023] Preferably, the display unit is a liquid crystal display screen or an LED display screen.

[0024] Compared with the prior art, the utility model at least has following beneficial effects:

[0025] The field material situation dynamic tracking system relies on ground network information transmission information, realizes field material situation dynamic tracking, adopts low-orbit Internet of Things satellite to construct space-based information link as enhancement, expands material information transmission means, relies on ground network information facility transmission information, data bandwidth is wider, and can keep online state, realizes information real-time update. When relying on no ground network information facility, adopts space-based information link to return data, two information return links are complementary, improve effective dynamic tracking to field material, avoid material broken link and state out of control.

[0026] The field material situation dynamic tracking system, other advantages, objects and features of the utility model will be partly embodied through the following description, and some will be understood by the person skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, are used for explaining the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0028] Figure 1 It is the structure schematic diagram of field material situation dynamic tracking system disclosed by the utility model;

[0029] Figure 2 It is the structure schematic diagram of Internet of Things terminal disclosed by the utility model;

[0030] Figure 3 It is field material situation dynamic tracking system data transmission route schematic diagram disclosed by the utility model;

[0031] Figure 4 It is the structure schematic diagram of Internet of Things satellite position disclosed by the utility model. DETAILED DESCRIPTION

[0032] The utility model makes further detailed description in combination with the drawings and examples, so that the person skilled in the art can implement according to the description.

[0033] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0034] As shown in Figures 1-3 The utility model provides a kind of field material situation dynamic tracking system, comprising: internet of things satellite 1, satellite ground station 2, ground wireless base station 3, data center 4 and at least one internet of things terminal, internet of things terminal is installed on material container unit 100 or transport equipment 101;Internet of things terminal is wirelessly connected with ground wireless base station 3 and internet of things satellite 1, internet of things satellite 1 is wirelessly connected with satellite ground station 2, and data center 4 is connected with ground wireless base station 3 and satellite ground station 2 respectively.

[0035] Further, the internet of things terminal includes positioning module, environmental information acquisition module and wireless communication module, and the positioning module, the environmental information acquisition module and the wireless communication module are electrically connected;

[0036] Positioning module is used to obtain the position information of material container unit or transport equipment;

[0037] Environmental information acquisition module is used to collect the environmental information where material container unit or transport equipment is located;

[0038] Wireless communication module is used to send position information and environmental information to data center 4 through internet of things satellite 1 and ground wireless base station 3.

[0039] Further, the internet of things terminal further includes information storage module, and the information storage module is used to save the material information on material container unit or transport equipment, and the wireless communication module synchronously sends material information to data center 4 when sending position information and environmental information to data center 4.

[0040] Further, the environmental information acquisition module includes pressure sensor, temperature sensor, pressure sensor and gas sensor, and the pressure sensor, temperature sensor, humidity sensor and gas sensor are electrically connected with the wireless communication module respectively.

[0041] Further, the wireless communication module at least includes LoRa communication submodule, NB-loT communication submodule and satellite communication submodule.

[0042] Further, the internet of things terminal further includes power module, and the positioning module, the environmental information acquisition module and the wireless communication module are electrically connected, and the power module is used to power the positioning module, the environmental information acquisition module and the wireless communication module.

[0043] Further, the data center 4 comprises a data receiving unit, a processor, a storage unit and a display unit;

[0044] The data receiving unit is used for receiving information transmitted by the ground wireless base station 3 and the satellite ground station 2;

[0045] The processor is electrically connected with the data receiving unit, the storage unit and the display unit respectively, and the processor converts the information received by the data receiving unit into a data signal and displays the data signal on the display unit;

[0046] The storage unit is used for storing the data signal;

[0047] The display unit is used for displaying the data signal sent by the processor.

[0048] Further, the Internet of Things satellite 1 comprises a plurality of non-geostationary satellites.

[0049] Further, the plurality of Internet of Things satellites 1 are connected with the satellite ground station through a wireless communication device.

[0050] Further, the display unit is a liquid crystal display screen or an LED display screen.

[0051] The working principle of the above technical solution is as follows:

[0052] The Internet of Things satellite 1, the satellite ground station 2, the ground wireless base station 3, the data center 4 and at least one Internet of Things terminal are installed on the material container unit 100 or the transportation equipment 101; the Internet of Things terminal is wirelessly connected with the ground wireless base station 3 and the Internet of Things satellite 1, the Internet of Things satellite 1 is wirelessly connected with the satellite ground station 2, and the data center 4 is connected with the ground wireless base station 3 and the satellite ground station 2 respectively.

[0053] As shown in Figure 3 The data center is connected with the ground wireless base station and the satellite ground station through a ground network information facility, and obtains material situation information returned through a ground information link and a space-based information link. The ground information link is in a continuous connection state, and information is transmitted online and updated in real time; the information transmission of the space-based information link depends on the establishment of an information link by the Internet of Things terminal, the Internet of Things satellite and the satellite ground station, and information is transferred and transmitted periodically, and the update period is determined according to the period of the satellite and the number of satellites.

[0054] The Internet of Things terminal comprises a positioning module, an environmental information acquisition module and a wireless communication module, and the positioning module, the environmental information acquisition module and the wireless communication module are electrically connected;

[0055] The positioning module is used to acquire position information of the material container unit or the transportation device. The positioning module can be positioned by a ground wireless base station or by an Internet of Things satellite. The position of the feature is determined. The positioning module is prior art and will not be described here.

[0056] The environmental information acquisition module is used to acquire environmental information of the material container unit or the transportation device.

[0057] The wireless communication module is used to send the position information and the environmental information to the data center 4 through the Internet of Things satellite 1 and the ground wireless base station 3.

[0058] The environmental information acquisition module includes a pressure sensor, a temperature sensor, a humidity sensor, and a gas sensor. The pressure sensor, the temperature sensor, the pressure sensor, and the gas sensor are electrically connected with the wireless communication module. The various sensors of the environmental information acquisition module acquire environmental information near the material container unit or the transportation device, including temperature, air pressure, humidity, etc. In the field environment, due to decomposition or corruption of organic matter under anaerobic conditions, toxic gases such as hydrogen sulfide or flammable gases such as methane may be generated. After the environmental information acquisition module acquires the above information, it is sent to the data center 4. The environmental information can be provided during the subsequent use or transportation of the material, and the personnel can make corresponding preparations in advance before entering to prevent danger.

[0059] The Internet of Things terminal further includes an information storage module. The information storage module is used to save material information on the material container unit or the transportation device. The wireless communication module synchronously sends the material information to the data center 4 when sending the position information and the environmental information to the data center 4.

[0060] After the material is loaded into the material container unit, the material information is output to the information storage module. The material information includes the name, type, quantity, and precautions of the material. During storage or transportation of the material, the material information is sent to the data center at the same time as the positioning information and the environmental information of the material. The accurate dynamic tracking of different batches of materials can be realized.

[0061] The ground wireless base station is deployed at a high position near the application region to facilitate the nearby information access of the Internet of Things terminal.

[0062] The Internet of Things satellite 1 includes a plurality of non-geostationary satellites. The orbit height of the non-geostationary satellite is low. When data transmission is performed, the path loss is smaller. Due to the small path loss, the ground receiving equipment of the non-geostationary satellite can be simpler and lower in cost. A large antenna and a high-power transmitter do not need to be used. That is, the cost of the satellite ground station is lower. The orbit of the non-synchronous satellite can be more flexibly configured. The coverage area is wider and there is no coverage blind area.

[0063] The Internet of Things terminal is installed on a material assembly unit and a transportation device, can realize material positioning, and uploads material information such as a material quantity, a position, and a state to a data center through two ways, one is that the material information is returned to the data center by accessing a nearby ground wireless base station, and the other is that the information is uploaded to a satellite when the Internet of Things satellite passes above the Internet of Things terminal, and then the information is returned to the data center by a satellite ground station. When the material is in a region near the ground wireless base station, the material information can be returned and the state is dynamically controlled through the ground network information facility by directly accessing the ground network information facility through the wireless base station; when there is no ground wireless base station near the material, or the ground wireless base station cannot access the ground network information facility due to terrain blockage, information return is realized through the Internet of Things satellite, and material state data is regularly updated.

[0064] The above technical solution has the following beneficial effects:

[0065] The field material situation dynamic tracking system relies on ground network information transmission information, realizes field material situation dynamic tracking, adopts a low-orbit Internet of Things satellite to construct a space-based information link as enhancement, expands a material information transmission means, relies on ground network information facility transmission information, data bandwidth is wider, and an online state can be maintained, real-time information update is realized. When there is no ground network information facility, data return is realized through the space-based information link, the two information return links are complementary, effective dynamic tracking of the field material is improved, and material chain breakage and state out-of-control are avoided.

[0066] In one embodiment, as shown in Figure 4 The Internet of Things satellite adopts a low-orbit Internet of Things satellite, and the low-orbit Internet of Things satellite can realize wide-area information collection of the Internet of Things terminal in a satellite coverage range. The space-based Internet of Things usually adopts a low-orbit satellite with an orbit height lower than 1000 km, and the orbit is usually 300-1000 km. For a satellite with an orbit height of about 500 km, an orbit period is about 1.5 h.

[0067] Multiple Internet of Things satellites form a satellite constellation, can realize high-frequency coverage and information rapid acquisition and return of a task application region, and thus improve timeliness of material situation awareness in a region without ground network information support.

[0068] Satellite signals can be received within the maximum coverage area, but at the edge of the maximum area where the elevation angle is zero, the satellite signal will be affected. First, from the perspective of satellite coverage, when the elevation angle is 0°, the satellite is just on the horizon of the ground observer, that is, the connecting line between the satellite and the observer is tangent to the horizon. At this time, although the satellite coverage theoretically includes the position of the observer, due to the influence of terrain, ground objects and ground noise, it is difficult to meet the requirements of effective communication link in practice. Especially in areas with complex terrain or high obstacles (such as buildings, mountains, etc.), the communication effect at an elevation angle of 0° may be worse.

[0069] Second, from the perspective of signal propagation, when the elevation angle is 0°, the satellite signal needs to pass through a longer atmosphere to reach the ground observer. This will cause the signal strength to be attenuated more during transmission, thereby reducing the communication quality. In addition, the ionosphere and troposphere in the atmosphere will also interfere and refract the satellite signal, further affecting the communication effect.

[0070] Third, from the perspective of the receiving device, when the elevation angle is small, the receiving antenna needs to be pointed to a lower angle to receive the satellite signal. This may increase the installation difficulty and cost of the receiving antenna, and also affect the performance and stability of the receiving antenna. Especially in complex environments such as multipath effect and ground reflection, the communication effect at an elevation angle of 0° may be more affected.

[0071] Therefore, in order to ensure the stability of signal propagation and positioning accuracy during satellite communication, the satellite coverage range is determined by selecting the minimum elevation angle, which is selected according to the positioning accuracy requirement, generally greater than 10 degrees.

[0072] The IOT terminal also includes a main control chip, which is electrically connected with the satellite communication sub-module, the wireless communication module and the positioning module. The main control chip calculates the subsatellite point height h of each IOT satellite according to the time when the satellite communication sub-module sends information to each IOT satellite and receives the returned information, and calculates the coverage width 2l of each IOT satellite according to the following formula:

[0073]

[0074] l=2βR

[0075] Where R is the radius of the earth, h is the subsatellite point height, 2α is the coverage angle, 2β is the central angle of the coverage area, θ is the minimum elevation angle of the coverage area, and 2l is the coverage width.

[0076] The main control chip determines whether the material is within the coverage width of the IOT satellite at the next time the satellite passes according to the calculated coverage width and the position information determined by the positioning module.

[0077] For a low-orbit IoT satellite, the orbit period T is calculated according to the following formula:

[0078]

[0079] Wherein: T is the orbit period, G is the gravitational constant, and M is the mass of the earth.

[0080] The master control chip determines whether the IoT satellite will pass through the coverage width of the material processing IoT satellite next time, and according to the calculated orbit period, the master control chip controls the wireless communication module to send the information of the material to the IoT satellite when the IoT satellite passes through next time. The information of the material includes the material information, the positioning information and the environmental information.

[0081] The specific calculation is as follows:

[0082] Select θ = 22.7°, h = 500km, solve α = 58.95°, β = 8.35°, l = 1861km, T = 5674s.

[0083] The working principle and beneficial effects of the above technical scheme are as follows: according to the coverage width of each IoT satellite in the satellite constellation calculated by the master control chip, the IoT satellite that will pass through the location of the material within the coverage width of the IoT satellite next time is selected, and the orbit period of the IoT satellite is calculated. When the IoT satellite passes through the location of the material, information is sent to the IoT satellite. The distance between the material and the IoT satellite is relatively close, which can save the energy consumed when sending information, and multiple IoT satellites that pass through the space above the location of the material can be selected for information sending, the number of information sending times is increased, the number of information of the material received by the data center is more, and the monitoring of the material is improved.

[0084] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0085] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0086] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, it can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A field asset situation dynamic tracking system, characterized in that, The application relates to an Internet of Things satellite (1), a satellite ground station (2), a ground wireless base station (3), a data center (4) and at least one Internet of Things terminal, wherein the Internet of Things terminal is installed on a material container unit (100) or a transportation device (101); the Internet of Things terminal is wirelessly connected with the ground wireless base station (3) and the Internet of Things satellite (1); the Internet of Things satellite (1) is wirelessly connected with the satellite ground station (2); and the data center (4) is connected with the ground wireless base station (3) and the satellite ground station (2) respectively. The Internet of Things terminal comprises a positioning module, an environment information acquisition module and a wireless communication module, wherein the positioning module, the environment information acquisition module and the wireless communication module are electrically connected.

2. The field asset situation dynamic tracking system of claim 1, wherein, The positioning module is used for acquiring position information of the material container unit or the transportation device. The environment information acquisition module is used for acquiring environment information in which the material container unit or the transportation device is located. The wireless communication module is used for sending the position information and the environment information to the data center (4) through the Internet of Things satellite (1) and the ground wireless base station (3). The Internet of Things terminal further comprises an information storage module, which is used for storing material information on the material container unit or the transportation device; and the wireless communication module synchronously sends the material information to the data center (4) when sending the position information and the environment information to the data center (4).

3. The field asset situation dynamic tracking system of claim 2, wherein, The environment information acquisition module comprises a pressure sensor, a temperature sensor, a humidity sensor and a gas sensor, wherein the pressure sensor, the temperature sensor, the pressure sensor and the gas sensor are electrically connected with the wireless communication module.

4. The field asset situation dynamic tracking system of claim 3, wherein, The wireless communication module at least comprises a LoRa communication submodule, an NB-loT communication submodule and a satellite communication submodule.

5. The field asset situation dynamic tracking system of claim 4, wherein, The Internet of Things terminal further comprises a power module, which is electrically connected with the positioning module, the environment information acquisition module and the wireless communication module and is used for supplying power to the positioning module, the environment information acquisition module and the wireless communication module.

6. The field asset situation dynamic tracking system of claim 5, wherein, The data center (4) comprises a data receiving unit, a processor, a storage unit and a display unit.

7. The field asset situation dynamic tracking system of claim 6, wherein, The data receiving unit is used for receiving information sent by the ground wireless base station (3) and the satellite ground station (2). The processor is electrically connected with the data receiving unit, the storage unit and the display unit, and the processor converts the information received by the data receiving unit into a data signal and displays the data signal on the display unit. The storage unit is used for storing the data signal. The display unit is used for displaying the data signal sent by the processor. The Internet of Things satellite (1) comprises a plurality of non-geostationary satellites.

8. The field asset situation dynamic tracking system of claim 7, wherein, The plurality of Internet of Things satellites (1) are connected with the satellite ground station through a wireless communication device.

9. The field asset situation dynamic tracking system of claim 8, wherein, The display unit is a liquid crystal display screen or an LED display screen.

10. The field supply situation dynamic tracking system as in claim 7, wherein, ​

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