CN113162675B - Data transmission system, method and device based on narrow-band satellite communication and electronic equipment - Google Patents
Data transmission system, method and device based on narrow-band satellite communication and electronic equipment Download PDFInfo
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- CN113162675B CN113162675B CN202110257833.6A CN202110257833A CN113162675B CN 113162675 B CN113162675 B CN 113162675B CN 202110257833 A CN202110257833 A CN 202110257833A CN 113162675 B CN113162675 B CN 113162675B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
Abstract
The application discloses a data transmission system, a method and a device based on narrow-band satellite communication and electronic equipment, wherein the data transmission system comprises a satellite side equipment set, a first server, a second server and a ground side equipment set; the satellite side equipment set is connected with the first server, and data are transmitted based on a narrow-band high-speed telemetering NBQTT protocol; the ground side equipment set is connected with the second server, and data are transmitted based on a message queue telemetry transmission MQTT protocol; the first server is connected with the second server, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the second server; the second server is used for converting the data of the MQTT protocol into the data of the NBQTT protocol and transmitting the data to the first server, and the NBQTT protocol replaces the MQTT protocol to transmit the data among partial devices, so that the data transmission speed can be improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a system, a method, and an apparatus for data transmission based on narrowband satellite communications, and an electronic device.
Background
With the development of satellite communication technology and internet of things technology, the Message Queue Telemetry Transport (MQTT) protocol is also increasingly widely used. The MQTT protocol is a publish/subscribe paradigm based messaging protocol under the ISO standard (ISO/IEC PRF 20922). It works on the TCP/IP suite, a messaging protocol designed for remote devices with poor hardware performance and in case of bad network conditions, using a publish/subscribe mechanism, for which it requires a message middleware. Fig. 1 is a basic topology diagram of an MQTT protocol in use according to an embodiment of the present application, including a publisher 101, MQTT middleware 102, and a subscriber 103.
Originally, the MQTT protocol was used by IBM to help oil and gas companies to solve the problem of unattended monitoring of thousands of miles of oil and gas pipelines, and the design solution adopted at that time was to transmit sensor data on the pipeline to a monitoring center via satellite communication. This application scenario has several important issues:
(1) the petroleum and natural gas pipeline is very long and needs to be connected with a plurality of data acquisition gateways along the line; the server needs to be capable of linking tens of thousands of communication clients;
(2) the data acquisition frequency of the petroleum pipeline sensor is not high, and a large amount of data does not need to be transmitted at one time;
(3) petroleum pipelines can cross a plurality of unmanned areas, and no network facilities are arranged nearby, so that the satellite communication is most economical;
(4) high orbit GEO satellites cover a wide range but have a large delay. The delay of the LEO/MEO satellite in the middle and low orbit is small, but the coverage area is limited, and the network interruption during satellite switching can occur every day. Therefore, the client and the server are required to be capable of keeping the message receiving and sending states and continue to send messages after the network is recovered to be normal;
(5) the satellite link has low bandwidth and high communication traffic cost. Therefore, it is necessary to save traffic overhead of transmitted messages as much as possible;
(6) some data fails to be sent and does not need to be retransmitted. However, messages such as valve leak alarms or commands to control valves in petroleum pipelines must be sent successfully in the event of a problem in the network.
Nowadays, the MQTT protocol is widely adopted in the field of internet of things, but the design based on the TCP/IP protocol makes the MQTT protocol have certain limitations and cannot meet the scene of high real-time requirement. Meanwhile, a large amount of control messages in the MQTT protocol enable the effective load to be lower and the bandwidth waste to be larger. This does not have a major impact on the cable network or cellular network, but the problem of high data transmission delay and failure rate is generated in narrow band communication satellites with very tight bandwidth.
Disclosure of Invention
The embodiment of the application provides a data transmission system, a method and a device based on narrow-band satellite communication and electronic equipment, which can improve the data transmission speed.
In one aspect, an embodiment of the present application provides a data transmission system based on narrowband satellite communication, where the data transmission system includes a satellite-side device set, a first server, a second server, and a ground-side device set;
the satellite side equipment set is connected with the first server, and data are transmitted based on a narrow-band high-speed telemetering NBQTT protocol;
the ground side equipment set is connected with the second server, and data are transmitted based on a message queue telemetry transmission MQTT protocol;
the first server is connected with the second server, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the second server; the second server is used for converting the data of the MQTT protocol into the data of the NBQTT protocol and transmitting the data to the first server.
In an alternative embodiment of the method according to the invention,
the narrow-band high-speed telemetry NBQTT protocol comprises a user datagram UDP protocol;
the MQTT protocol for message queue telemetry transport includes the TCP protocol for transmission control.
In an optional embodiment, the satellite-side device set includes a satellite internet of things device, a high-orbit narrow-band satellite, a ground station and a gateway device;
one side of the high-orbit narrow-band satellite is connected with satellite Internet of things equipment, and data are transmitted based on an NBQTT protocol and the satellite Internet of things equipment;
the other side of the high-orbit narrow-band satellite is connected with a ground station and gateway equipment, and data are transmitted based on an NBQTT protocol and the ground station and the gateway equipment;
the ground station and the gateway device are connected with a first server.
In an optional embodiment, the ground-side device set includes a mobile network internet of things terminal, a mobile network base station and a gateway device:
one sides of the mobile network base station and the gateway equipment are connected with a second server, and data are transmitted with the second server based on the MQTT protocol;
the other sides of the mobile network base station and the gateway equipment are connected with a mobile network Internet of things terminal, and data are transmitted based on an MQTT protocol and the mobile network Internet of things terminal.
In an optional embodiment, the ground-side device set further includes a wired network internet of things terminal;
the wired network Internet of things terminal is connected with the mobile network Internet of things terminal and transmits data with the second server based on the MQTT protocol.
In another aspect, a data transmission method is provided, where the data transmission method includes:
the method comprises the steps that a first server receives a message sent by a satellite-side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
the first server analyzes the message;
if the analyzed message comprises release data, the first server converts the release data based on the NBQTT protocol into the release data based on the MQTT protocol;
and the first server sends the converted publishing data to the second server so that the second server sends the publishing data to the ground side equipment set subscribed to the publishing data.
In an optional embodiment, after the first server parses the packet, the method further includes:
if the analyzed message comprises a subscription topic, the first server converts the subscription topic based on the NBQTT protocol into the subscription topic based on the MQTT protocol;
the first server sends the converted subscription topic to a second server;
the first server receives a subscription message of the second server based on the NBQTT protocol;
the first server determines a target satellite side equipment set subscribing the subscription message, and encapsulates the subscription message into a subscription message;
and the first server transmits the subscription message to the target satellite side equipment set.
In another aspect, a data transmission apparatus is provided, including:
the receiving module is used for receiving messages sent by the satellite side equipment set based on a narrow-band high-speed telemetering NBQTT protocol;
the analysis module is used for analyzing the message;
the protocol conversion module is used for converting the published data based on the NBQTT protocol into published data based on the MQTT protocol if the analyzed message comprises the published data;
and the sending module is used for sending the converted published data to the second server so that the second server sends the published data to the ground side equipment set subscribed with the published data.
Another aspect provides an electronic device comprising a processor and a memory, the memory having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the data transmission method as described above.
Another aspect provides a computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes or a set of instructions, which is loaded and executed by a processor to implement the data transmission method as described above.
The data transmission system, method, device and electronic equipment based on narrow-band satellite communication provided by the embodiment of the application have the following technical effects:
the data transmission system comprises a satellite side equipment set, a first server, a second server and a ground side equipment set; the satellite side equipment set is connected with the first server, and data are transmitted based on a narrow-band high-speed telemetering NBQTT protocol; the ground side equipment set is connected with the second server, and data are transmitted based on a message queue telemetry transmission MQTT protocol; the first server is connected with the second server, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the second server; the second server is used for converting the data of the MQTT protocol into the data of the NBQTT protocol and transmitting the data to the first server, and the NBQTT protocol replaces the MQTT protocol to transmit the data among partial devices, so that the data transmission speed can be improved.
Drawings
In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a basic topology diagram of an MQTT protocol in use according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a data transmission method according to an embodiment of the present application;
fig. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;
fig. 8 is a block diagram of a hardware structure of a server in a data transmission method according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a data transmission system according to an embodiment of the present application, and as shown in fig. 2, the data transmission system includes a satellite-side device set 201, a first server 202, a second server 203, and a ground-side device set 204.
The satellite-side equipment set 201 is connected with a first server 202, and data are transmitted between the satellite-side equipment set and the first server based on a narrow-band high-speed telemetry NBQTT protocol. The ground-side device set 204 is connected with the second server 203, and data are transmitted between the ground-side device set and the second server based on the MQTT protocol of message queue telemetry transmission. Alternatively, the satellite-side device set 201 and the first server 202 may communicate through a wireless link or a wired link. The ground-side device set 204 and the second server 203 may communicate via a wireless link or a wired link.
The first server 202 is connected with the second server 203, the first server 202 is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the second server 203, and the second server 203 is used for converting the data of the MQTT protocol into the data of the NBQTT protocol and transmitting the data to the first server 202. Alternatively, the first server 202 and the second server 203 may communicate via a wireless link or a wired link.
Optionally, the narrow band high speed telemetry NBQTT protocol comprises a user datagram UDP protocol. The MQTT protocol for message queue telemetry transport includes the TCP protocol for transmission control.
The MQTT protocol cannot guarantee real-time in current narrowband satellite applications because it employs a publish/subscribe mechanism. The publish/subscribe mechanism refers to a message paradigm in which a message sender (referred to as a publisher) does not directly send a message to a specific receiver (referred to as a subscriber) in a software architecture. But rather, the published messages are classified into different categories without knowing which subscribers, if any, may be present. Likewise, a subscriber may express interest in one or more categories, receiving only interesting messages, without knowing which publishers (if any) are present. Publish/subscribe is a close paradigm to message queuing and is typically part of a larger message-oriented middleware system. Most messaging systems support both a message queue model and a publish/subscribe model in the API.
The TCP protocol adopted by the MQTT protocol can transmit a lot of control information, wherein the control information comprises three-way handshake related control information brought by connection orientation, and the control information is used for ensuring the control information of arrival confirmation, data verification and the like of reliability. Because the data link in satellite communication is not very stable, the actual use of the connection-oriented TCP protocol is often interrupted, and frequent connection re-establishment also aggravates the occupation of bandwidth. In order to solve the problems, the narrow-band satellite is applied to the scene of the internet of things with higher real-time requirement, the MQTT protocol needs to be optimized, the transmission of control information is reduced, a TCP (transmission control protocol) protocol used by the MQTT is changed into a UDP (user datagram protocol), and the control information during data transmission is further reduced.
Meanwhile, because the UDP protocol is a connectionless-oriented protocol, a connection state needs to be maintained, and a problem that a source IP and a port in a UDP datagram received by a server are inconsistent with an actual IP and a port of a device due to wide use of an nat (network Address translator) in the existing IPv4 network needs to be solved. The UDP protocol can be adopted in the transmission layer, is a connectionless-oriented transmission layer protocol in an OSI reference model, provides transaction-oriented simple unreliable information transmission service, avoids the overhead of three-way handshake related control information brought by the connectionless-oriented protocol due to the connectionless-oriented characteristic of the UDP, and avoids the overhead brought by the transmission layer when the reliability is ensured due to the unreliability. Therefore, the overhead caused by extra control information is reduced, the unavailable time caused by the connection-oriented protocol during connection establishment is avoided, and the real-time performance is improved.
Optionally, the narrow band high speed telemetry NBQTT protocol comprises a user datagram UDP protocol. The MQTT protocol for message queue telemetry transport includes the TCP protocol for transmission control.
In an alternative embodiment, the set of satellite-side devices 201 includes several devices, and the set of terrestrial-side devices 204 also includes several devices through which the satellite and terrestrial devices communicate. Fig. 3 is a schematic structural diagram of a data transmission system provided in an embodiment of the present application, and as shown in fig. 3, the satellite-side device set 201 includes a satellite internet of things device 2011, a high-orbit narrowband satellite 2012, a ground station and a gateway device 2013, and the ground-side device set 204 includes a mobile network internet of things terminal 2041 and a mobile network base station and a gateway device 2042.
Optionally, one side of the high-orbit narrowband satellite 2012 is connected to the satellite internet of things device 2011, the data is transmitted based on the NBQTT protocol and the satellite internet of things device 2011, the other side of the high-orbit narrowband satellite 2012 is connected to the ground station and the gateway device 2013, the data is transmitted based on the NBQTT protocol and the ground station and the gateway device 2013, and the ground station and the gateway device 2013 are connected to the first server 202. The first server 202 is used for receiving and processing high real-time messages in real time and interacting data with the second server 203.
Optionally, one side of the mobile network base station and the gateway device 2042 is connected to the second server 203, and transmits data with the second server 203 based on the MQTT protocol, and the other side of the mobile network base station and the gateway device 2042 is connected to the mobile network internet of things terminal 2041, and transmits data with the mobile network internet of things terminal 2041 based on the MQTT protocol. The second server 203 is used for processing data based on the MQTT protocol and sending the data to the first server 202.
Fig. 4 is a schematic structural diagram of a data transmission system provided in an embodiment of the present application, and as shown in fig. 4, the ground-side device set 204 includes a wired network internet of things terminal 2043 in addition to the mobile network internet of things terminal 2041, the mobile network base station and the gateway device 2042 shown in fig. 3. The wired network internet of things terminal 2043 is connected with the mobile network internet of things terminal 2041, and transmits data with the second server 203 based on the MQTT protocol.
In an optional embodiment, the present disclosure is based on the structural diagram of the data transmission system, and further discloses a data transmission method, and fig. 5 is a schematic flow chart of the data transmission method provided in the embodiment of the present application, including:
in step S501: the first server receives messages sent by the satellite-side equipment set based on a narrow-band high-speed telemetry NBQTT protocol.
In an alternative embodiment, the satellite internet of things device collects the sensor information and saves the sensor information into a data structure. The satellite Internet of things equipment encapsulates the sensor data and the control command into messages with specific formats according to a BNQTT protocol, transmits the messages to the high-orbit narrow-band satellite, sends the messages to the ground station and the gateway equipment through the high-orbit narrow-band satellite, and then transmits the messages to the first server.
In step S503: the first server parses the message.
Correspondingly, the first server analyzes the message after receiving the message.
In step S505: if the analyzed message comprises release data, the first server converts the release data based on the NBQTT protocol into the release data based on the MQTT protocol.
In the embodiment of the disclosure, the first server determines whether the message after parsing is issuing a message, which may be determined by whether the message after parsing has issuing data, and if the message after parsing has issuing data, the first server may convert the issuing data based on the NBQTT protocol to the issuing data based on the MQTT protocol.
In step S507: and the first server sends the converted publishing data to the second server so that the second server sends the publishing data to the ground side equipment set subscribed to the publishing data.
Optionally, after the first server sends the converted publishing data to the second server, the second server may push the publishing message to a corresponding publishing topic, and then publish the publishing message to the mobile network internet of things terminal or the wired network internet of things terminal subscribing to the publishing topics.
Fig. 6 is a flowchart illustrating a data transmission method according to an embodiment of the present application, where after the first server 202 parses the packet, the method further includes:
in step S601: if the analyzed message comprises the subscription topic, the first server converts the subscription topic based on the NBQTT protocol into the subscription topic based on the MQTT protocol.
In an optional embodiment, before step S601, the satellite internet of things device sends a subscription instruction to the satellite internet of things device. The satellite internet of things equipment transmits the subscription instruction to the high-orbit narrow-band satellite according to the BNQTT protocol, the high-orbit narrow-band satellite transmits the subscription instruction to the ground station and the gateway equipment, and then the ground station and the gateway equipment transmit the subscription instruction to the first server. The first server parses the subscription instruction. If the analyzed message comprises the subscription topic, the first server converts the subscription topic based on the NBQTT protocol into the subscription topic based on the MQTT protocol.
In step S603: and the first server sends the converted subscription topic to the second server.
In step S605: the first server receives a subscription message of the second server based on the NBQTT protocol.
In step S607: and the first server determines a target satellite side equipment set subscribed to the subscription message and encapsulates the subscription message into a subscription message.
In step S609: and the first server transmits the subscription message to the target satellite side equipment set.
The receiving of the subscription message by the target satellite-side device may include: and the ground station and the gateway equipment receive the subscription message, transmit the subscription message to the high-orbit narrow-band satellite, transmit the subscription message to the target satellite Internet of things equipment through the high-orbit narrow-band satellite, and then perform corresponding service logic processing on the target satellite Internet of things equipment according to the content of the message.
An embodiment of the present application further provides a data transmission device, and fig. 7 is a schematic structural diagram of the data transmission device provided in the embodiment of the present application, and as shown in fig. 7, the data transmission device includes:
the receiving module 701 is used for receiving messages sent by a satellite-side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
an analysis module 702, configured to analyze the message;
the protocol conversion module 703 is configured to convert the published data based on the NBQTT protocol to published data based on the MQTT protocol if the analyzed message includes published data;
a sending module 703 is configured to send the converted publishing data to the second server, so that the second server sends the publishing data to the ground-side device set subscribing to the publishing data.
In an alternative embodiment, the apparatus further comprises a determination module,
if the analyzed message comprises a subscription topic, the protocol conversion module is used for converting the subscription topic based on the NBQTT protocol into the subscription topic based on the MQTT protocol;
the sending module is configured to send the converted subscription topic to a second server;
the receiving module is configured to receive a subscription message of the second server based on the NBQTT protocol;
the determining module is used for determining a target satellite side equipment set subscribing the subscription message and packaging the subscription message into a subscription message;
the sending module is used for transmitting the subscription message to the target satellite side equipment set.
The device and method embodiments in the embodiments of the present application are based on the same application concept.
The method provided by the embodiment of the application can be executed in a computer terminal, a server or a similar operation device. Taking the example of running on a server, fig. 8 is a hardware structure block diagram of the server of the data transmission method provided in the embodiment of the present application. As shown in fig. 8, the server 800 may have a relatively large difference due to different configurations or performances, and may include one or more Central Processing Units (CPUs) 810 (the processor 810 may include but is not limited to a Processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 830 for storing data, one or more storage media 820 (e.g., one or more mass storage devices) for storing applications 823 or data 822. Memory 830 and storage medium 820 may be, among other things, transient or persistent storage. The program stored in storage medium 820 may include one or more modules, each of which may include a series of instruction operations for a server. Still further, the central processor 810 may be configured to communicate with the storage medium 820 to execute a series of instruction operations in the storage medium 820 on the server 800. The server 800 may also include one or more power supplies 860, one or more wired or wireless network interfaces 850, one or more input-output interfaces 840, and/or one or more operating systems 821, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so forth.
The input-output interface 840 may be used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the server 800. In one example, i/o Interface 840 includes a Network adapter (NIC) that may be coupled to other Network devices via a base station to communicate with the internet. In one example, the input/output interface 840 may be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.
It will be understood by those skilled in the art that the structure shown in fig. 8 is only an illustration and is not intended to limit the structure of the electronic device. For example, server 800 may also include more or fewer components than shown in FIG. 8, or have a different configuration than shown in FIG. 8.
Embodiments of the present application also provide an electronic device comprising a processor and a memory, the memory having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the data transmission method as described above.
Embodiments of the present application further provide a storage medium, which may be disposed in a server to store at least one instruction, at least one program, a code set, or a set of instructions related to implementing a data transmission method in the method embodiments, where the at least one instruction, the at least one program, the code set, or the set of instructions are loaded and executed by the processor to implement the data transmission method.
Alternatively, in this embodiment, the storage medium may be located in at least one network server of a plurality of network servers of a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
As can be seen from the above embodiments of the data transmission method, the vehicle-mounted terminal, or the computer storage medium provided by the present application, the processing method is applied to a passenger monitoring device disposed in a vehicle, where the passenger monitoring device includes a detection radar and a signal feedback device set; wherein, the detection radar is arranged in the backrest of the driver seat; the method comprises the following steps: determining a current detection unit from the detection radar; and if the vital sign signals captured by the current detection unit are acquired, a signal feedback device set is utilized to send out feedback signals. This application carries out abundant acquisition to the vital sign signal in the car through the detection radar that sets up in the driver's seat back, combines signal feedback equipment can be more abundant assurance car interior passenger's life safety.
It should be noted that: the sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. And specific embodiments thereof have been described above. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A data transmission system based on narrow-band satellite communication is characterized by comprising a satellite-side equipment set, a first server, a second server and a ground-side equipment set;
the satellite-side equipment set is connected with the first server, and data are transmitted based on a narrow-band high-speed telemetry NBQTT protocol;
the ground-side equipment set is connected with the second server, and data are transmitted based on a message queue telemetry transmission MQTT protocol;
the first server is connected with the second server, and the first server is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data of the MQTT protocol to the second server; the second server is used for converting the data of the MQTT protocol into the data of the NBQTT protocol and transmitting the data of the MQTT protocol to the first server;
the satellite side equipment set comprises a plurality of pieces of equipment, and data are transmitted among the plurality of pieces of equipment of the satellite side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
the ground-side device set comprises a plurality of devices, and data are transmitted among the devices of the ground-side device set based on a message queue telemetry transmission MQTT protocol.
2. The data transmission system of claim 1,
the narrow-band high-speed telemetry NBQTT protocol comprises a user datagram UDP protocol;
the MQTT protocol comprises a transmission control TCP protocol.
3. The data transmission system according to any one of claims 1-2, wherein the set of satellite-side devices includes a satellite internet of things device, a high-orbit narrowband satellite, and a ground station and gateway device;
one side of the high-orbit narrow-band satellite is connected with the satellite Internet of things equipment, and data are transmitted based on the NBQTT protocol and the satellite Internet of things equipment;
the other side of the high-orbit narrow-band satellite is connected with the ground station and the gateway equipment, and data are transmitted based on the NBQTT protocol and the ground station and the gateway equipment;
the ground station and the gateway equipment are connected with the first server.
4. The data transmission system according to any one of claims 1-2, wherein the ground-side device set comprises a mobile network internet of things terminal, a mobile network base station and a gateway device:
one side of the mobile network base station and one side of the gateway equipment are connected with the second server, and data are transmitted to the second server based on the MQTT protocol;
the other sides of the mobile network base station and the gateway equipment are connected with the mobile network Internet of things terminal, and data are transmitted based on the MQTT protocol and the mobile network Internet of things terminal.
5. The data transmission system of claim 4, wherein the set of ground-side devices further comprises a wired network internet of things terminal;
the wired network Internet of things terminal is connected with the mobile network Internet of things terminal and transmits data based on the MQTT protocol and the second server.
6. A method of data transmission, comprising:
the method comprises the steps that a first server receives a message sent by a satellite-side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
the first server analyzes the message;
if the analyzed message comprises release data, the first server converts the release data based on the NBQTT protocol into the release data based on the MQTT protocol;
the first server sends the converted published data to a second server so that the second server sends the published data to a ground side equipment set subscribed with the published data;
the satellite side equipment set comprises a plurality of pieces of equipment, and the messages are transmitted among the plurality of pieces of equipment of the satellite side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
the ground-side device set comprises a plurality of devices, and the publishing data is transmitted among the devices of the ground-side device set based on a Message Queue Telemetry Transmission (MQTT) protocol.
7. The data transmission method according to claim 6, wherein after the first server parses the packet, the method further comprises:
if the analyzed message comprises a subscription topic, the first server converts the subscription topic based on the NBQTT protocol into the subscription topic based on the MQTT protocol;
the first server sends the converted subscription topic to a second server;
the first server receives a subscription message of the second server based on the NBQTT protocol;
the first server determines a target satellite side equipment set subscribed with the subscription message, and encapsulates the subscription message into a subscription message;
and the first server transmits the subscription message to the target satellite side equipment set.
8. A data transmission apparatus, comprising:
the receiving module is used for receiving messages sent by the satellite side equipment set based on a narrow-band high-speed telemetering NBQTT protocol;
the analysis module is used for analyzing the message;
the protocol conversion module is used for converting the published data based on the NBQTT protocol into published data based on an MQTT protocol if the analyzed message comprises published data;
the sending module is used for sending the converted release data to a second server so that the second server sends the release data to a ground side equipment set subscribed with the release data;
the satellite side equipment set comprises a plurality of pieces of equipment, and the messages are transmitted among the plurality of pieces of equipment of the satellite side equipment set based on a narrow-band high-speed telemetry NBQTT protocol;
the ground-side device set comprises a plurality of devices, and the publishing data is transmitted among the devices of the ground-side device set based on a Message Queue Telemetry Transmission (MQTT) protocol.
9. An electronic device, characterized in that the electronic device comprises a processor and a memory, wherein at least one instruction or at least one program is stored in the memory, and the at least one instruction or the at least one program is loaded by the processor and executes the data transmission method according to any one of claims 6 to 7.
10. A computer storage medium, having at least one instruction or at least one program stored therein, which is loaded and executed by a processor to implement the data transmission method according to any one of claims 6 to 7.
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| CN116192903B (en) * | 2023-03-01 | 2024-01-09 | 银河航天(北京)网络技术有限公司 | Electric power inspection system based on Internet of things and satellite communication |
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