CN110971291A - Unmanned aerial vehicle data communication method, device and system for adding key information - Google Patents
Unmanned aerial vehicle data communication method, device and system for adding key information Download PDFInfo
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Abstract
The invention discloses an unmanned aerial vehicle data communication method, device and system for adding key information, relates to the technical field of aircraft communication, and comprises the following steps: acquiring the position and the number of idle bits of a data packet; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; and performing superposition coding on the key information and the data packet according to a coding mode, and sending the data subjected to superposition coding and the coding mode. According to the invention, through data processing of the superposed key information, the utilization efficiency of bandwidth resources is greatly improved, the expenditure cost of narrow-band communication is reduced, the diversity of data browsing is increased, the data retrieval according to time, space and characteristics is possible, and finally, a flexible and convenient man-machine interaction mode is realized.
Description
Technical Field
The invention relates to the technical field of aircraft communication, in particular to an unmanned aerial vehicle data communication method, device and system for adding key information.
Background
With the rapid development of economy and society in China and the continuous promotion of airspace management reform, a low-altitude airspace is gradually opened, and an airborne end of an unmanned aerial vehicle can be vigorously developed and widely applied, for example, the airborne end of the unmanned aerial vehicle can be applied to the fields of electric power, communication, meteorology, agriculture and forestry, oceans, exploration, insurance and the like, and can be particularly applied to the aspects of earth observation, forest fire prevention and extinguishment, disaster detection, communication relay, marine monitoring, oil and gas pipeline inspection, pesticide spraying, land resource investigation, wild animal monitoring, flood prevention and drought resistance monitoring, fish school detection, movie and aviation, drug smuggling, border patrol, public security and counter-terrorism and the like.
However, the unmanned aerial vehicle information interaction mode provided in the prior art is single and low in efficiency, the data acquired from the unmanned aerial vehicle airborne terminal communication unit are directly displayed for a user to check by the user terminal communication unit, the operation is single, the display mode is single, data query with different dimensions can not be carried out through interest guidance, and the characteristic index of key information in the transmission data can not be realized.
Disclosure of Invention
Therefore, the technical problem to be solved by the embodiment of the invention is to overcome the defect that the unmanned aerial vehicle in the prior art has insufficient key information in the transmission data.
Therefore, the unmanned aerial vehicle data communication method for increasing the key information is applied to an airborne terminal communication unit of the unmanned aerial vehicle, and comprises the following steps:
acquiring the position and the number of idle bits of a data packet;
extracting key information;
determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information;
and performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode.
Preferably, the step of extracting the key information includes: key information is extracted from the received load state data and/or telemetry data.
Preferably, the step of determining the encoding mode in which the key information is superimposed into the data packet according to the number of data amount of the key information includes:
judging whether the data quantity number of the key information is less than or equal to the idle bit number of the data packet or not;
when the data quantity number of the key information is larger than the idle bit number of the data packet, the obtained coding mode is to directly compound the key information to the back of the data packet.
Preferably, the step of determining the encoding mode in which the key information is superimposed into the data packet according to the number of data amount of the key information further includes:
when the data quantity data of the key information is less than or equal to the number of idle bits of the data packet, judging whether the idle bit positions of the data packet are continuous;
when the free bit positions of the data packets are consecutive, the obtained encoding mode is to insert the key information at the free bit positions in its entirety.
Preferably, the step of determining the encoding mode in which the key information is superimposed into the data packet according to the number of data amount of the key information further includes:
when the idle bit positions of the data packet are not continuous, the obtained coding mode is that the key information is divided according to the segment number of the continuous idle bits of the data packet and the number of the continuous idle bits of each segment and then is sequentially inserted into the idle bit positions in a blocking mode.
The unmanned aerial vehicle data communication method for adding the key information is applied to a server-side communication unit and comprises the following steps:
receiving data and a coding mode which are sent by an airborne terminal communication unit of the unmanned aerial vehicle and are subjected to superposition coding;
analyzing the data after the superposition coding according to the coding mode to obtain key information and a data packet;
cataloging the data packets according to the key information, and providing the cataloged data packets for a storage unit to be stored;
when receiving a data transmission request containing key information required to search and browse sent by a user-side communication unit, sending a data packet corresponding to the key information required to search and browse to the user-side communication unit.
The unmanned aerial vehicle data communication method for increasing the key information is applied to a user side communication unit and comprises the following steps:
sending a data transmission request containing key information required to be searched and browsed to a server-side communication unit;
and receiving a data packet corresponding to the key information required to be searched and browsed, and providing the data packet for the display unit to display.
The invention provides an airborne end device of an unmanned aerial vehicle, which comprises:
the counter is used for counting the data volume of the key information actually inserted into the data packet, and when the count value reaches the data volume number of the key information, the pulse generator is informed and starts counting from zero;
the pulse generator is used for producing pulses and feeding back the pulses to the airborne terminal communication unit after receiving the notification;
the airborne terminal communication unit is used for acquiring the idle bit positions and the number of the data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; and performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode after receiving the pulse.
An unmanned aerial vehicle communication system of an embodiment of the present invention includes:
the unmanned aerial vehicle airborne end device comprises an airborne end communication unit, a data packet processing unit and a data packet processing unit, wherein the airborne end communication unit is used for acquiring the idle bit positions and the number of the data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode;
the server-side device comprises a server-side communication unit and a data processing unit, wherein the server-side communication unit is used for receiving the data and the coding mode which are sent by the unmanned aerial vehicle airborne-side communication unit and are subjected to superposition coding; analyzing the data after the superposition coding according to the coding mode to obtain key information and a data packet; cataloging the data packets according to the key information, and providing the cataloged data packets for a storage unit to be stored; when a data transmission request containing key information required to be searched and browsed and sent by a user side communication unit is received, sending a data packet corresponding to the key information required to be searched and browsed to the user side communication unit;
the client device comprises a client communication unit and a server communication unit, wherein the client communication unit is used for sending a data transmission request containing key information required to be searched and browsed to the server communication unit; and receiving a data packet corresponding to the key information required to be searched and browsed, and providing the data packet for the display unit to display.
The technical scheme of the embodiment of the invention has the following advantages:
according to the unmanned aerial vehicle data communication method, the device and the system for adding the key information, the transmission, classification and cataloguing as well as retrieval and query of the key information of the data packet based on time, coordinate position and height (space), load state information (event) and the like are realized, the key information amount in the data transmitted by the system is increased, a user can perform various multi-dimensional personalized search and query, and a flexible and convenient human-computer interaction mode is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a specific example of an unmanned aerial vehicle data communication method for adding key information in embodiment 1 of the present invention;
fig. 2 is a schematic block diagram of a specific example of an onboard end device of an unmanned aerial vehicle according to embodiment 4 of the present invention;
fig. 3 is a schematic block diagram of a specific example of an onboard end communication unit according to embodiment 4 of the present invention;
fig. 4 is a schematic block diagram of a specific example of the unmanned aerial vehicle communication system in embodiment 5 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In describing the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the terms "comprises," "comprising," and/or "including," when used in this specification, are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While the exemplary embodiments are described as performing an exemplary process using multiple units, it is understood that the exemplary process can also be performed by one or more modules.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides an unmanned aerial vehicle data communication method for increasing key information, which is applied to an airborne terminal communication unit of an unmanned aerial vehicle, and as shown in fig. 1, the method comprises the following steps:
s11, acquiring the idle bit position and number of the data packet; the data received by the communication unit at the airborne end of the unmanned aerial vehicle comprises two parts: one part is telemetering data (including GPS data, wherein the GPS data includes time, coordinate position, height and the like) from flight control, after the telemetering data is copied into two parts, one part of telemetering data is forwarded in real time, and the other part of telemetering data extracts key information; the other part is operation data and load state data from the load, the operation data is the data packet, which is a video data packet or an image data packet of visible, infrared and other operations, and the load state data is used for displaying the state data of the inclination angle, the position and the like during the load operation;
s12, extracting key information; the data category included in the key information may be predetermined before the aircraft operates, for example, the key information may include one or more of time, coordinate position, altitude, and the like of GPS information, inclination, position, and the like of load state data;
s13, determining a coding mode of superimposing the key information into the data packet according to the data volume number of the key information; the total data quantity of general data packets after key information is superposed is limited by factors such as the processing speed of the airborne end communication unit on the data, and the processing speed is far less than the allowable transmission delay of the data in network transmission;
and S14, performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode.
According to the unmanned aerial vehicle data communication method for adding the key information, the key information is added in the unmanned aerial vehicle transmission data by overlapping and coding the key information and the data packet, so that the diversified and multidimensional cataloging, storing and inquiring of the data based on space, time, events, characteristics and the like can be completed, and the possibility is provided for the diversified retrieval of users.
Preferably, the step of extracting key information of S12 includes: extracting key information from the received load state data; or extracting key information from the received telemetry data; or to extract key information from both the received load state data and telemetry data.
Preferably, the step of determining the encoding mode of the key information superimposed into the data packet according to the number of data amount of the key information in S13 includes:
s131, judging whether the data quantity number of the key information is less than or equal to the idle bit number of the data packet;
s132, when the data quantity number of the key information is larger than the idle bit number of the data packet, the obtained coding mode is to directly compound the key information to the back of the data packet;
s133, when the data quantity data of the key information is less than or equal to the number of idle bits of the data packet, judging whether the idle bit positions of the data packet are continuous, namely whether the idle bits are a whole block;
s134, when the idle bit positions of the data packets are continuous, the obtained coding mode is to integrally insert the key information into the idle bit positions;
and S135, when the idle bit positions of the data packet are not continuous, namely the idle bits are scattered, the obtained coding mode is that the key information is divided according to the segment number of the continuous idle bits of the data packet and the number of each segment of the continuous idle bits and then is sequentially inserted into the idle bit positions in a block mode.
The above steps S131 to S135 ensure effective utilization of the idle bits by comparing the number of data volumes of the key information with the number and positions of the idle bits of the data packet, efficiently utilize the transmission bandwidth, improve the bandwidth utilization efficiency, greatly improve the high-precision synchronization identification of the data packet, and reduce the communication cost. Especially, when the transmission link is a narrow-band communication link, bandwidth resources are particularly precious, transmission bandwidth is effectively utilized, and it becomes especially important to increase transmission of effective bytes.
Preferably, the step of S14 of superposition coding the key information and the data packet according to the coding method includes:
and when the key information is superposed into the data packet according to the coding mode, counting the data volume of the key information actually inserted into the data packet, and when the count value reaches the data volume number of the key information, obtaining superposed and coded data. The whole process of superposition is observed through counting, the detection of superposition operation is realized, and the precision is improved.
Example 2
The embodiment provides an unmanned aerial vehicle data communication method for adding key information, which is applied to a server-side communication unit and comprises the following steps:
s21, receiving the data and the coding mode which are sent by the unmanned aerial vehicle airborne terminal communication unit and are subjected to superposition coding;
s22, analyzing the data after superposition coding according to the coding mode to obtain key information and a data packet;
s23, cataloging the data packets according to the key information and providing the cataloged data packets for a storage unit to store;
and S24, when receiving the data transmission request which is sent by the user terminal communication unit and contains the key information of the required search browse, sending a data packet corresponding to the key information of the required search browse to the user terminal communication unit.
In the above steps S21-S24, the server-side communication unit catalogs and stores the data packets according to the key information, and marks the key information of the data packets about time, coordinate position, height, load state data, etc., so as to provide a basis for various multi-dimensional extraction of data, and further provide important analysis angles and dimensions for problem investigation of data content.
Preferably, the step of cataloging the data packets according to the key information of S23 includes:
when the key information is time, cataloging the data packets according to the time;
when the key information is the coordinate position, cataloging the data packet according to the coordinate position;
when the key information is height, cataloging the data packets according to the height;
when the key information is load state data, cataloging the data packets according to the load state data;
when the key information includes two or more of time, coordinate position, height and load status data, the data packets are cataloged according to the key information with the highest priority, the priority order can be preset, for example, one priority order is time, coordinate position, height and load status data, and the key information with the highest priority is time.
Example 3
The embodiment provides an unmanned aerial vehicle data communication method for adding key information, which is applied to a user side communication unit and comprises the following steps:
s31, sending a data transmission request containing key information required to search and browse to a server-side communication unit;
and S32, receiving a data packet corresponding to the key information to be searched and browsed, and providing the data packet for a display unit to display, so that personalized selection of a display mode according to actual requirements is embodied, and different dimensionality data query of user interest guidance is met.
Example 4
The present embodiment provides an unmanned aerial vehicle airborne end device 100, as shown in fig. 2, including:
a counter 2 for counting the data quantity of the key information actually inserted into the data packet, and when the count value reaches the data quantity number of the key information, informing the pulse generator and starting counting from zero;
the pulse generator 3 is used for producing pulses and feeding back the pulses to the airborne terminal communication unit after receiving the notification;
the airborne terminal communication unit 1 is used for acquiring the idle bit positions and the number of the data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; and performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode after receiving the pulse.
Above-mentioned unmanned aerial vehicle machine carries end device through carrying out superposition coding with key information and data package, has increased key information in unmanned aerial vehicle transmission data, can accomplish cataloguing, storage, the inquiry to data based on the diversified multidimension of space, time, event, characteristic etc. from this, provides probably for user's diversified retrieval. The whole process of superposition is observed through counting, the detection of superposition operation is realized, and the precision is improved.
Preferably, as shown in fig. 3, the on-board terminal communication unit 1 includes:
an idle bit determining unit 11, configured to obtain an idle bit position and a number of data packets;
a key information extraction unit 12 for extracting key information;
the encoding mode determining unit 13 is configured to determine, according to the number of data volumes of the key information, an encoding mode in which the key information is superimposed on the data packet;
and a superposition sending unit 14, configured to perform superposition coding on the key information and the data packet according to the coding mode, and send data subjected to superposition coding and the coding mode. Preferably, the superposition transmitting unit 14 is further configured to transmit the superposition coded data and the coding mode after receiving the pulse.
Preferably, the encoding method determining unit 13 includes:
the number judging unit is used for judging whether the number of the data quantity of the key information is less than or equal to the number of idle bits of the data packet or not;
a first encoding mode obtaining unit, configured to, when the number of data amounts of the key information is greater than the number of idle bits of the data packet, obtain an encoding mode in which the key information is directly multiplexed behind the data packet;
the idle bit continuity judging unit is used for judging whether the idle bit positions of the data packets are continuous or not when the data quantity data of the key information is less than or equal to the number of the idle bits of the data packets;
a second encoding mode obtaining unit, configured to obtain an encoding mode in which the key information is integrally inserted into the idle bit positions when the idle bit positions of the data packets are consecutive;
and the third coding mode obtaining unit is used for obtaining a coding mode that the key information is divided according to the number of the segments of the continuous idle bits of the data packet and the number of each segment of the continuous idle bits and then is sequentially inserted into the idle bit positions in a blocking mode when the idle bit positions of the data packet are not continuous.
Example 5
This embodiment provides an unmanned aerial vehicle communication system, as shown in fig. 4, includes:
the unmanned aerial vehicle airborne end device 100 comprises an airborne end communication unit 1, and is used for acquiring the idle bit positions and the number of data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode;
the server-side device 200 comprises a server-side communication unit 4 for receiving the data and the coding mode after superposition coding sent by the unmanned aerial vehicle airborne-side communication unit; analyzing the data after the superposition coding according to the coding mode to obtain key information and a data packet; cataloging the data packets according to the key information, and providing the cataloged data packets for a storage unit to be stored; when a data transmission request containing key information required to be searched and browsed and sent by a user side communication unit is received, sending a data packet corresponding to the key information required to be searched and browsed to the user side communication unit;
the client device 300 comprises a client communication unit 5, which is used for sending a data transmission request containing key information required to search and browse to a server communication unit; and receiving a data packet corresponding to the key information required to be searched and browsed, and providing the data packet for the display unit to display.
According to the unmanned aerial vehicle communication system, the transmission, classification and cataloging as well as retrieval query of the key information of the data packet based on time, coordinate position and height (space), load state information (event) and the like are realized, the key information amount in the system transmission data is improved, a user can perform various multi-dimensional personalized search query, and a flexible and convenient human-computer interaction mode is realized.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. The utility model provides an increase unmanned aerial vehicle data communication method of key information, is applied to unmanned aerial vehicle machine carries end communication unit, its characterized in that includes following step:
acquiring the position and the number of idle bits of a data packet;
extracting key information;
determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information;
and performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode.
2. The method of claim 1, wherein the step of extracting key information comprises: key information is extracted from the received load state data and/or telemetry data.
3. The method according to claim 1 or 2, wherein the step of determining the encoding mode of the key information superimposed into the data packet according to the data amount number of the key information comprises:
judging whether the data quantity number of the key information is less than or equal to the idle bit number of the data packet or not;
when the data quantity number of the key information is larger than the idle bit number of the data packet, the obtained coding mode is to directly compound the key information to the back of the data packet.
4. The method according to claim 3, wherein the step of determining the encoding manner of the key information superimposed into the data packet according to the data amount of the key information further comprises:
when the data quantity data of the key information is less than or equal to the number of idle bits of the data packet, judging whether the idle bit positions of the data packet are continuous;
when the free bit positions of the data packets are consecutive, the obtained encoding mode is to insert the key information at the free bit positions in its entirety.
5. The method according to claim 4, wherein the step of determining the encoding manner of the key information superimposed into the data packet according to the data amount of the key information further comprises:
when the idle bit positions of the data packet are not continuous, the obtained coding mode is that the key information is divided according to the segment number of the continuous idle bits of the data packet and the number of the continuous idle bits of each segment and then is sequentially inserted into the idle bit positions in a blocking mode.
6. An unmanned aerial vehicle data communication method for increasing key information is applied to a server-side communication unit and is characterized by comprising the following steps:
receiving data and a coding mode which are sent by an airborne terminal communication unit of the unmanned aerial vehicle and are subjected to superposition coding;
analyzing the data after the superposition coding according to the coding mode to obtain key information and a data packet;
cataloging the data packets according to the key information, and providing the cataloged data packets for a storage unit to be stored;
when receiving a data transmission request containing key information required to search and browse sent by a user-side communication unit, sending a data packet corresponding to the key information required to search and browse to the user-side communication unit.
7. An unmanned aerial vehicle data communication method for increasing key information is applied to a user side communication unit and is characterized by comprising the following steps:
sending a data transmission request containing key information required to be searched and browsed to a server-side communication unit;
and receiving a data packet corresponding to the key information required to be searched and browsed, and providing the data packet for the display unit to display.
8. An unmanned aerial vehicle machine carries end device, its characterized in that includes:
the counter is used for counting the data volume of the key information actually inserted into the data packet, and when the count value reaches the data volume number of the key information, the pulse generator is informed and starts counting from zero;
the pulse generator is used for producing pulses and feeding back the pulses to the airborne terminal communication unit after receiving the notification;
the airborne terminal communication unit is used for acquiring the idle bit positions and the number of the data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; and performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode after receiving the pulse.
9. An unmanned aerial vehicle communication system, comprising:
the unmanned aerial vehicle airborne end device comprises an airborne end communication unit, a data packet processing unit and a data packet processing unit, wherein the airborne end communication unit is used for acquiring the idle bit positions and the number of the data packets; extracting key information; determining a coding mode of superimposing the key information into the data packet according to the data quantity number of the key information; performing superposition coding on the key information and the data packet according to the coding mode, and sending data subjected to superposition coding and the coding mode;
the server-side device comprises a server-side communication unit and a data processing unit, wherein the server-side communication unit is used for receiving the data and the coding mode which are sent by the unmanned aerial vehicle airborne-side communication unit and are subjected to superposition coding; analyzing the data after the superposition coding according to the coding mode to obtain key information and a data packet; cataloging the data packets according to the key information, and providing the cataloged data packets for a storage unit to be stored; when a data transmission request containing key information required to be searched and browsed and sent by a user side communication unit is received, sending a data packet corresponding to the key information required to be searched and browsed to the user side communication unit;
the client device comprises a client communication unit and a server communication unit, wherein the client communication unit is used for sending a data transmission request containing key information required to be searched and browsed to the server communication unit; and receiving a data packet corresponding to the key information required to be searched and browsed, and providing the data packet for the display unit to display.
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| WO2021249260A1 (en) * | 2020-06-10 | 2021-12-16 | 中兴通讯股份有限公司 | Data transmission method and apparatus, circuit board, storage medium and electronic apparatus |
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