WO2020253293A1

WO2020253293A1 - Device and method for satellite service data transmission, and storage medium

Info

Publication number: WO2020253293A1
Application number: PCT/CN2020/080491
Authority: WO
Inventors: 周舒婷; 袁振博; 陆川
Original assignee: 成都星时代宇航科技有限公司
Priority date: 2019-06-21
Filing date: 2020-03-20
Publication date: 2020-12-24
Also published as: CN110212972A

Abstract

Provided in the embodiments of the present application are a device and method for satellite service data transmission, and a storage medium. The device comprises: a master computer interface circuit, the master computer interface circuit being connected to a master computer, and the master computer interface circuit being configured to receive satellite service data transmitted by the master computer; a data format conversion circuit, the data format conversion circuit being connected respectively to the master computer interface circuit and a sub-processing system, and the data format conversion circuit being configured to convert the data format of the satellite service data into a data format adapted to the sub-processing system and to transmit the satellite service data of which the data format is converted to the sub-processing system. Because the data format conversion circuit is capable of converting the data format of the satellite service data into the data format adapted to the sub-processing system so that the sub-processing system is allowed to process the data in a scheme adapted to self, thus allowing the sub-processing system to iterate according to the data processing scheme of self, not only saving the time required for iteration, but also avoiding a large volume of repetitive tuning works.

Description

Star service data transmission equipment, method and storage medium

Cross references to related applications

This application claims the priority of a Chinese patent application named "Star Affairs Data Transmission Equipment and Method" filed with the China Patent Office on June 21, 2019, with the application number 2019105464908, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of satellite services data processing, and specifically, provides a satellite services data transmission device, method and storage medium.

Background technique

Current satellites generally include a main computer and a sub-processing system. Among them, the sub-processing system is mainly responsible for collecting some data such as satellite attitude data, satellite communication data, satellite load data, etc., and the main computer is mainly responsible for controlling the sub-processing system, receiving the data collected by the sub-processing system, and Process the collected data.

The communication method of the host computer needs to meet the international agreement. Under different international agreements, the communication method of the host computer is not the same. In order to ensure normal communication, the sub-processing system needs to adapt to the communication mode of each host computer, but this will cause each iteration of the sub-processing system to be debugged for the host computer of different communication modes, for example, the sub-processing system is applied separately To satellite a and satellite b, the main computer of satellite a adopts A communication mode, and the main computer of satellite b adopts B communication mode. Then when the sub-processing system is updated and iteratively, the update of the system not only needs to be debugged for the A communication mode, it also needs to be debugged for the B communication mode, so that the updated sub-processing system can also be adapted to the main computer of satellite a. And the main computer of satellite b. Using this update method not only consumes a lot of time, but also a lot of repeated debugging work.

Summary of the invention

The purpose of this application is to provide a satellite service data transmission device, method, and storage medium to reduce the time required for each iteration of the sub-processing system, and to avoid a large amount of repetitive work to realize each iteration of the sub-processing system.

To achieve at least one of the above objectives, the technical solutions adopted in this application are as follows:

The embodiment of the application provides a satellite services data transmission device, which is applied to a satellite, and the satellite includes a sub-processing system and a host computer configured to manage the sub-processing system. The system is connected to the host computer through the star services data transmission equipment, and the star services data transmission equipment includes:

A host computer interface circuit, the host computer interface circuit is connected to the host computer, and the host computer interface circuit is configured to receive star service data sent by the host computer;

A data format conversion circuit, the data format conversion circuit is respectively connected with the host computer interface circuit and the sub-processing system, the data format conversion circuit is configured to convert the data format of the star service data into The data format adapted by the processing system is divided, and the satellite service data after the converted data format is sent to the processing system.

In the embodiment of this application, since the data format conversion circuit can convert the data format of Star Affairs data into a data format that is compatible with the sub-processing system, the sub-processing system does not need to target its own system and other systems after each iteration. The communication debugging of the system can directly process the data to be processed sent by the host computer. Through the technical solution provided by this embodiment, the sub-processing system can iterate according to its own data processing mode, without debugging the communication mode of each host computer, which not only saves the time required for iteration, but also avoids A lot of repeated debugging work.

Optionally, as a possible implementation manner, after the host computer interface circuit converts the satellite service data into a corresponding differential signal, it sends the satellite service data converted into a differential signal to the data format conversion Circuit.

Optionally, as a possible implementation manner, the data format conversion circuit is configured to determine a data format adapted to the sub-processing system from a plurality of preset data formats, and convert the satellite service The data format of the data is converted into the determined data format.

In the embodiment of the present application, since multiple data formats are preset in the data format conversion circuit, the data format conversion circuit can adapt to host computers of different communication modes. It expands the application range of the data format conversion circuit, making the data format conversion circuit more applicable in practice.

Optionally, as a possible implementation manner, the satellite services data transmission device further includes:

A sub-processing system interface circuit, the sub-processing system interface circuit is respectively connected to the data format conversion circuit and the sub-processing system, and the sub-processing system interface circuit is configured to receive the conversion sent by the data format conversion circuit The satellite services data in the data format, and send the satellite services data in the converted data format to the sub-processing system at the first transmission rate; wherein, the host computer interface circuit receives the data at the second transmission rate The satellite service data of the host computer is sent to the data format conversion circuit, and the first transmission rate is greater than the second transmission rate.

In the embodiment of the present application, since the sub-processing system interface circuit can send the satellite service data after the data format conversion to the sub-processing system at a higher transmission rate than the host computer interface circuit, the real-time data reception of the sub-processing system is guaranteed , To avoid affecting the operation of the satellite due to data delay.

Optionally, as a possible implementation manner, the first transmission rate is 1.5 to 2.5 times the second transmission rate.

Optionally, as a possible implementation manner, the first transmission rate is twice the second transmission rate.

Optionally, as a possible implementation manner, the host computer interface circuit is connected to the host computer through an I2C bus and an SPI bus, and the host computer interface circuit also converts to the data format through a CAN bus and an SPI bus. Circuit connection, and the data format conversion circuit is connected to the sub-processing system interface circuit via Ethernet.

Optionally, as a possible implementation manner, the host computer interface circuit is connected to the host computer through an I2C bus.

PCB main board, the main computer interface circuit, the sub-processing system interface circuit and the data format conversion circuit are all arranged on the PCB main board, the main computer interface circuit is located at one end of the PCB main board, and the sub- The processing system interface circuit is located at the other end of the PCB main board, and the data format conversion circuit is located in the middle section between the two ends of the PCB main board.

In the embodiment of this application, since the sub-processing system interface circuit and the data format conversion circuit are respectively arranged at both ends of the PCB main board, the sub-processing system interface circuit and the data format conversion circuit are far apart, and the interface circuit of the sub-processing system The interface circuits of the sub-processing system are isolated from each other to avoid mutual interference between the two circuits. It can also avoid communication interference between the interface circuit of the sub-processing system and the data format conversion circuit due to space radiation.

PCB main board, the thickness of the PCB main board is 2.0mm ~ 2.5mm, the main computer interface circuit and the sub-processing system interface circuit are arranged on the surface of one side of the PCB main board, and the data format conversion circuit is arranged on The PCB main board faces away from the surface of the other side of the sub-processing system interface circuit.

Optionally, as a possible implementation manner, the star service data transmission device further includes an interface protection circuit, and the host computer interface circuit is connected to the data format conversion circuit through the interface protection circuit;

The interface protection circuit is configured to suppress the peak electrical signal output by the host computer to the sub-processing system to be less than a preset value, so that the sub-processing system receives the suppressed peak electrical signal .

In the embodiment of the present application, since the peak electrical signal generated by the host computer can be suppressed, the peak electrical signal generated by the host computer is prevented from affecting the operation of the sub-processing system, and the stability of the entire satellite operation is ensured.

Optionally, as a possible implementation manner, the satellite includes multiple sub-processing systems, and the data format conversion circuit establishes a connection with each of the sub-processing systems;

The data format conversion circuit sends the satellite service data to a target sub-processing system according to the identifier contained in the satellite service data; wherein, the target sub-processing system is the one among the multiple sub-processing systems and the Identify the corresponding sub-processing system.

Optionally, as a possible implementation manner, the data format conversion circuit is configured to receive the sub-system data sent by the sub-processing system, and convert the received data format of the sub-system data into a The data format adapted by the host computer, and send the sub-system data after the data format conversion to the host computer interface circuit, so that the host computer interface circuit sends the sub-system data after the data format conversion to The host computer.

In the embodiment of the present application, the data sent by the sub-processing system to the host computer is converted into the data format through the data format conversion circuit. Illustratively, the data format of the data can be converted into a data format compatible with the host computer. The format conversion circuit improves the applicability of the data format conversion circuit in practice through bidirectional data format conversion.

Optionally, as a possible implementation, the data format conversion circuit is configured to determine a data format adapted to the host computer from a plurality of preset data formats, and convert the sub-system data The data format is converted into the determined data format.

In the embodiment of the present application, because multiple data formats are preset in the data format conversion circuit, the data format conversion circuit can adapt to sub-processing systems of different communication modes. It expands the application range of the data format conversion circuit, making the data format conversion circuit more applicable in practice.

The embodiment of the present application also provides a satellite service data transmission method, which is applied to a data format conversion circuit in a satellite. The satellite further includes a sub-processing system and a host computer configured to manage the sub-processing system. The processing system is connected to the host computer through the satellite service data transmission equipment, and the method includes:

Receiving star service data sent by the host computer;

The data format of the star service data is converted into a data format adapted to the sub-processing system, and the star service data after the converted data format is sent to the sub-processing system.

Optionally, as a possible implementation manner, receiving star service data sent by the host computer includes:

Receiving the satellite services data sent by the host computer at a second transmission rate;

Correspondingly, sending the star service data after the converted data format to the sub-processing system includes:

The satellite service data after the converted data format is sent to the sub-processing system at a first transmission rate, wherein the first transmission rate is greater than the second transmission rate.

The embodiment of the present application also provides a non-volatile computer-readable storage medium storing a program code, and when the program code is run by a computer, the satellite service data transmission method described in the second aspect is executed.

Description of the drawings

FIG. 1 shows a first structural block diagram of a satellite services data transmission device provided by an embodiment of the present application;

FIG. 2 shows a second structural block diagram of a satellite services data transmission device provided by an embodiment of the present application;

FIG. 3 shows a circuit diagram of a host computer interface circuit in a satellite service data transmission device provided by an embodiment of the present application;

FIG. 4 shows a circuit diagram of a data format conversion circuit in a satellite services data transmission device provided by an embodiment of the present application;

FIG. 5 shows a circuit diagram of an interface circuit of a sub-processing system in a satellite services data transmission device provided by an embodiment of the present application;

FIG. 6 shows a schematic structural diagram of a satellite services data transmission device provided by an embodiment of the present application;

Fig. 7 shows a flowchart of a satellite service data transmission method provided by an embodiment of the present application.

In the figure, 10-Star Affairs data transmission equipment; 11-Main computer interface circuit; 12-Data format conversion circuit; 13-Sub-processing system interface circuit; 14-PCB main board; 20-Sub-processing system.

Detailed ways

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "back", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the attached drawings The orientation or positional relationship is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application. In the description of this application, "multiple" means two or more than two, unless otherwise specifically defined.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected: it can be mechanical connection, electrical connection or mutual communication; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relationship. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them. Moreover, the "above", "above", and "above" the first feature on the second feature includes the first feature directly above and diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for realizing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed.

Hereinafter, some embodiments of the present application will be described with reference to the accompanying drawings. It should be understood that some embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

Please refer to FIG. 1, which shows a structural block diagram of a satellite services data transmission device 10 in an embodiment of the present application. The satellite services data transmission device 10 can be applied to satellites, for example, can be applied to traditional satellites or emerging cube stars. For example, in the aforementioned traditional satellite or emerging CubeSat, in addition to the satellite service data transmission device 10, it may also include: a sub-processing system 20 and a host computer configured to control the sub-processing system 20.

Among them, in an embodiment, there may be multiple sub-processing systems 20, such as satellite power supply systems, satellite attitude systems, satellite communication systems, satellite payload systems, satellite storage systems, satellite camera systems, and so on. The satellite services data transmission device 10 can be configured to establish communication between a host computer and at least one sub-processing system 20. The satellite services data transmission device 10 will be used to establish a communication between the host computer and a corresponding sub-processing system 20 in the following. Take the communication as an example to explain in order to understand the solution provided by this application.

Referring to FIG. 1, in an embodiment, the satellite service data transmission device 10 may include: a host computer interface circuit 11 and a data format conversion circuit 12. The main computer interface circuit 11 is electrically connected to the main computer, and the data format conversion circuit 12 is electrically connected to the main computer interface circuit 11 and the sub-processing system 20 respectively.

In an embodiment, the host computer interface circuit 11 may be configured to receive the star service data sent by the host computer, and forward the star service data to the data format conversion circuit 12. Optionally, the satellite service data may be configured to instruct the sub-processing system 20 to collect certain data, or may also be configured to instruct the sub-processing system 20 to process certain data.

Exemplarily, when the satellite service data is configured to instruct the sub-processing system 20 to collect certain data, the satellite service data may be the instruction data required to instruct the sub-processing system 20 to perform the collection action; and when the satellite service data is configured to instruct When the sub-processing system 20 processes certain data, the satellite service data may be data to be processed that needs to be processed by the sub-processing system 20, such as image data.

The data format conversion circuit 12 may be configured to receive the satellite service data sent by the host computer interface circuit 11, convert the satellite service data into a data format compatible with the sub-processing system 20, and then convert the satellite service data after the data format has been converted. The data is sent to the sub-processing system 20, so that the sub-processing system 20 can directly obtain the satellite service data that adapts to its own data format, so that the sub-processing system 20 directly processes the received satellite service data.

As shown in FIG. 2, as an exemplary implementation of the present application, in order to facilitate the establishment of communication between the data format conversion circuit 12 and the sub-processing system 20, the satellite service data transmission device 10 may further include: a sub-processing system interface circuit 13. Wherein, the sub-processing system interface circuit 13 can be connected to the data format conversion circuit 12 and the sub-processing system 20 respectively. On this basis, the data format conversion circuit 12 can send the satellite service data after the converted data format to the sub-processing system 20 through the sub-processing system interface circuit 13.

Exemplarily, the principles of the host computer interface circuit 11, the data format conversion circuit 12, and the sub-processing system interface circuit 13 will be described in detail below with reference to FIGS. 1 to 5.

Please refer to Fig. 1 and Fig. 2, and refer to Fig. 3. In one embodiment, the host computer interface circuit 11 may be a connector with a function of converting a differential signal, such as a 52PIN type connector.

Among them, the pins on the host computer interface circuit 11 can be connected to the host computer in a manner adapted to the host computer. For example, as a possible implementation manner of the present application, when the communication mode adopted by the host computer is SPI (Serial Peripheral Interface, serial interface circuit) communication, the host computer interface circuit 11 may be connected to the host computer through the SPI bus. Of course, the host computer interface circuit 11 uses the SPI bus to connect to the host computer as an exemplary implementation of this application, which should not be used as a limitation of the solution provided in this application; for example, as another possible implementation of this application, when the host When the communication mode adopted by the computer is I2C (Inter-Integrated Circuit, integrated circuit bus) communication, the host computer interface circuit 11 may be connected to the host computer through the I2C bus.

In addition, the pins on the host computer interface circuit 11 can also be connected to the data format conversion circuit 12 in a communication mode adapted to the communication mode of the data format conversion circuit 12. For example, if the communication mode adopted by the data format conversion circuit 12 is SPI communication, the pins on the host computer interface circuit 11, such as the 19th to 23rd pins, can be connected to the data format conversion circuit 12 via the SPI bus. Of course, it is understandable that the connection between the 19th to 23rd pins of the host computer interface circuit 11 and the data format conversion circuit 12 is also an exemplary implementation of this application, and it should not be a limitation of this application; for example, The first pin and the third pin on the host computer interface circuit 11 can be connected to the data format conversion circuit 12 via a CAN (Controller Area Network) bus.

In addition, the host computer interface circuit 11 can be connected to the host computer, so that the host computer interface circuit 11 can obtain the star service data sent by the host computer. The host computer interface circuit 11 can perform conversion processing on the satellite service data, such as converting the satellite service data into a differential signal, and send the satellite service data in the differential signal format to the data format conversion circuit 12.

Of course, it can be understood that the host computer interface circuit 11 may convert all data in the received satellite service data into differential signals and then transmit it, or only convert part of the data into differential signals for transmission.

For example, in a possible application scenario, all satellite services data received by the host computer interface circuit 11 can be divided into control data and business data. For example, the involved signals such as instruction information and status information can be used as control data. For example, signals such as image information and file information are used as service data; in the solution provided by this application, the host computer interface circuit 11 can convert, for example, the aforementioned control data into a differential signal, and then send it to the data format conversion circuit 12, the host computer The interface circuit 11 may also not convert the aforementioned service data into differential information, but directly send the service data to the data format conversion circuit 12; in this way, by enabling satellite service data such as control data to be performed in a differential signal format Transmission can improve the stability of data transmission, and directly transmit satellite service data such as business data without format conversion, which can ensure the efficiency of data transmission.

It should be noted that in traditional satellites or emerging cube stars, the data sent by the host computer to the host computer interface is generally an inter-chip serial signal. Therefore, when the host computing interface circuit 11 needs to convert the data format of the satellite service data sent by the host computer, the data format of the satellite service data is converted into an inter-chip serial signal into a differential signal.

In addition, in some other possible implementations of this application, in order to meet the transmission requirements for different types of satellite service data, such as the aforementioned control data and service data, the host computer interface circuit 11 can communicate with the host computer through the I2C bus and the SPI bus. Connection, the host computer can be used to transmit business data to the main computing interface circuit 11 through the SPI bus, and control data to the main computing interface circuit 11 through the I2C bus, so that the classified transmission of data improves the host computer’s transmission to the host computer interface circuit 11. Satellite services are data efficient and convenient for data transmission management.

Of course, in some other possible implementations of this application, the host computer interface circuit 11 can also be connected to the data format conversion circuit 12 through the CAN bus and the SPI bus, and the host computer interface circuit 11 can transfer the star service data such as the above through the SPI bus. The service data of the above is transmitted to the data format conversion circuit 12, and the host computer interface circuit 11 can transmit the above-mentioned control data in the star service data to the data format conversion circuit 12 through the CAN bus.

Please refer to FIG. 1 to FIG. 3, and refer to FIG. 4. As a possible implementation, the data format conversion circuit 12 may be an integrated circuit chip with signal processing capabilities, for example, an STM32F429IGT652PIN single-chip microcomputer.

In an embodiment, the pins on the data format conversion circuit 12 may be connected to the host computer interface circuit 11 in a communication mode adapted to SPI. For example, the pins on the data format conversion circuit 12, such as the 20th to the 23rd pins, can be connected to the corresponding pins on the host computer interface circuit 11, such as the 19th pin on the host computer interface circuit 11. Connect from pin to pin 22. Of course, it can be understood that the data format conversion circuit 12 using pins 20 to 23 to connect to the host computer interface circuit 11 is only an exemplary implementation of the present application, which should not be a limitation of the present application; for example, Any 4 of the PA pins on the data format conversion circuit 12 can be connected to the host computer interface circuit 11 through programming definition.

In addition, the pins on the data format conversion circuit 12 can also be connected to the sub-processing system interface circuit 13 in a manner adapted to the communication mode of the sub-processing system 20. For example, the pins on the data format conversion circuit 12, such as the 33rd pin to the 36th pin, can be connected to the sub-processing system interface circuit 13 via Ethernet. Of course, it can be understood that the data format conversion circuit 12 using pins 33 to 36 to connect to the sub-processing system interface circuit 13 is only an exemplary implementation of this application, which should not be regarded as a limitation of this application; for example, Any 4 pins of the PB pins on the data format conversion circuit 12 can be connected to the sub-processing system interface circuit 13 through programming definition.

In addition, if it is necessary to establish communication between the host computer and multiple sub-processing systems 20, multiple pins configured to be connected to the sub-processing system interface circuit 13 can be defined on the data format conversion circuit 12 through programming. . Then, when each sub-processing system interface circuit 13 is connected to a corresponding sub-processing system 20, the communication between the host computer and multiple sub-processing systems 20 can be established. For example, when the plurality of sub-processing systems 20 includes a sub-processing system 20A and a sub-processing system 20B, and one sub-processing system interface circuit 13 is connected to the sub-processing system 20A, and the other sub-processing system interface circuit 13 is connected to the sub-processing system 20A. When the system 20B is connected, through the programming definition of the pins, the 33 to 36 pins on the data format conversion circuit 12 can be connected to a sub-processing system interface circuit 13 connected to the sub-processing system 20A, and the data format The 56th pin to the 59th pin on the conversion circuit 12 can be connected to another sub-processing system interface circuit 13 connected to the sub-processing system 20B.

For example, in the above-mentioned embodiment of establishing a connection with multiple sub-processing systems 20, the data format conversion circuit 12 can obtain the identifier of the sub-processing system 20 in the star service data. For example, the identifier may be the device address of the sub-processing system 20. For example, a MAC (Media Access Control Address, Media Access Control Address) address, so that the sub-processing system corresponding to the obtained identifier among the multiple sub-processing systems 20 is used as the target sub-processing system, and the satellite services data is sent to the target sub-processing system. Processing system. Therefore, in an embodiment, the data format conversion circuit 12 needs to determine a data format adapted to the sub-processing system 20.

Exemplarily, as an exemplary implementation method for determining the data format adapted to the sub-processing system 20, in order to realize the data format conversion circuit 12, it can be applied to the host of various communication methods without specific debugging. The computer and the sub-processing system 20, the data format conversion circuit 12 can preset multiple data formats that are adapted to each main computer or each sub-processing system 20, and establish each data format and its adapted main computer or sub-processing The relationship between the systems 20.

In this way, based on the determined sub-processing system 20, the data format conversion circuit 12 can determine a data format adapted to the sub-processing system 20 from a plurality of preset data formats according to the association relationship of the sub-processing system 20. Thus, according to the determined data format, the data format conversion circuit 12 can convert the data format of the satellite service data into a data format adapted by the sub-processing system 20, and obtain the satellite service data after the converted data format.

For example, the data format of Star Service data before conversion includes the A field, the B field and the C field, where the A field contains the message header data, the B field contains the message content data, and the C field is empty. If the data format adapted to the sub-processing system 20 includes the a field, the b field, the c field, and the d field, the data format conversion circuit 12 can rewrite the packet header data contained in the A field into the a field, and The message content data contained in the B field is rewritten into the d field, so that the b field and the c field are empty, thereby realizing the conversion of the data format.

It should be noted that due to the special application environment of the satellite, it is difficult to manually check on the spot whether the sub-processing system 20 is really invalid after the sub-processing system 20 is determined to be invalid by the host computer. Therefore, the satellite has very high requirements for the real-time communication, so as to avoid the delay of data transmission by the satellite data transmission device 10, which causes the sub-processing system 20 to be deemed invalid by the host computer.

Based on this, in order to reduce the data forwarding delay, in one embodiment, the host computer interface circuit 11 can receive the satellite service data sent by the host computer at the second transmission rate, and the host computer interface circuit 11 can also use the second transmission rate. Send the star service data to the data format conversion circuit 12; in this way, the data format conversion circuit 12 can send the star service data after the converted data format to the sub-processing system interface circuit 13 at a first transmission rate greater than the second transmission rate , And the sub-processing system interface circuit 13 can also send the satellite service data after the data format conversion to the sub-processing system 20 at the first transmission rate, so that the data format conversion circuit 12 sends out the satellite service data faster than the data format conversion The speed at which circuit 12 receives satellite service data.

For example, the first transmission rate may be 1.5 to 2.5 times the second transmission rate, or the first transmission rate may be set to at least 2 times the second transmission rate, so that the first transmission rate is greater than the second transmission rate, for example, In some possible implementation manners, the first transmission rate may be twice the second transmission rate. In this case, not only data congestion during multi-machine communication can be avoided, but also the waste of communication resources and transmission errors can be avoided.

Of course, it can be understood that the above setting of the first transmission rate to be at least twice the second transmission rate, or the first transmission rate to be 1.5 to 2.5 times the second transmission rate is only an example, and there are other examples in this application. In a possible implementation manner, the multiple relationship between the first transmission rate and the second transmission rate can also be set to other, as long as the first transmission rate is set to be greater than the second transmission rate.

Please combine FIG. 1 to FIG. 4 and refer to FIG. 5. As a possible implementation, the sub-processing system interface circuit 13 may be a connector with a function of combining differential signals.

Wherein, the sub-processing system interface circuit 13 may adopt a communication mode adapted to the communication mode of the sub-processing system 20, and connect to the data format conversion circuit 12 and the sub-processing system 20 respectively. For example, if the communication method adopted by the sub-processing system 20 is Ethernet communication, then the sub-processing system interface circuit 13 can establish a connection with the sub-processing 20 via Ethernet. Of course, the sub-processing system interface 13 can also be connected to the data format via Ethernet. The conversion circuit 12 establishes a connection.

Of course, the above-mentioned connection mode of the sub-processing system interface circuit 13 is an exemplary implementation of the application, which should not be regarded as a limitation of this application; The pins on the system interface circuit 13 such as the third pin and the sixth pin can be connected to the sub-processing system 20 correspondingly. It should be noted that the pins on the sub-processing system interface circuit 13 are not fully displayed, and some pins in other unshown pins can also be defined, so that some pins and data formats of the sub-processing system interface circuit 13 The conversion circuit 12 is connected.

In addition, the sub-processing system interface circuit 13 is connected to the data format conversion circuit 12, so that the sub-processing system interface circuit 13 can obtain the data format converted star service data sent by the data format conversion circuit 12.

In addition, in some possible scenarios, the sub-processing system interface circuit 13 may combine multiple satellite services data obtained after the data format is converted, and the data format is a differential signal, so that the combined satellite service data is transmitted as the first The rate is sent to the sub-processing system 20.

It should be noted that the cooperation of the main computer interface circuit 11, the data format conversion circuit 12, and the sub-processing system interface circuit 13 can not only be the data format conversion circuit 12 converting the data format of the star service data into the data adapted by the processing system 20 Format, and send the star service data after the converted data format to the sub-processing system 20; and, in some other possible implementation manners of this application, the host computer interface circuit 11, the data format conversion circuit 12, and the sub-processing system interface circuit 13 The cooperation can also be that after the data format conversion circuit 12 receives the sub-system data sent by the sub-processing system 20, it converts the data format of the sub-system data into a data format adapted by the host computer, and sends the sub-system data after the converted data format To the host computer.

Wherein, as mentioned above, when the satellite service data is configured to instruct the sub-processing system 20 to collect certain data, correspondingly, the sub-system data may be data collected by the sub-processing system 20, such as sub-system status data; When the data is configured to instruct the sub-processing system 20 to process certain data, correspondingly, the sub-system data may be the result data obtained by the sub-processing system 20 processing the data, for example, the sub-processing system 20 performs target recognition on the image. The recognition result of the target.

Optionally, in some possible implementation manners, the sub-system data is forwarded by the sub-processing system interface circuit 13, and the data format conversion circuit 12 may receive the sub-system data sent from the sub-processing system 20 at the first transmission rate. Correspondingly, the data format conversion circuit 12 can obtain the device address of the host computer in the sub-system data, such as the MAC address, so as to determine that the sub-system data needs to be sent to the host computer. Therefore, in an embodiment, the data format conversion circuit 12 can also determine the data format adapted to the host computer.

Optionally, in some possible implementation manners, based on the determined host computer, the data format conversion circuit 12 may determine the relationship with the host computer from multiple preset data formats according to the pre-established association relationship of the host computer. Computer-adapted data format. Furthermore, according to the determined data format, the data format conversion circuit 12 can convert the data of the sub-system data into a data format adapted by the host computer, and obtain the sub-system data after the converted data format, and then use the second transmission rate The sub-system data after the converted data format is sent to the host computer interface circuit 11, so that the host computer interface circuit 11 sends the received sub-system data to the host computer.

Combining Fig. 1 and Fig. 2 and referring to Fig. 6, in order to avoid mutual interference between circuits, and also to avoid in some possible scenarios, radiation in space will have a certain influence on the normal operation of the circuit. In some possible implementations, in order to reduce the influence of radiation, a radiation-proof layer can be coated on the satellite. In addition, this application also provides some other optional implementations, for example, the influence of radiation can be reduced by selecting the location of each circuit.

In an embodiment, the satellite service data transmission device 10 may further include: a PCB main board 14, the PCB main board 14 may be a printed circuit board, and the main computer interface circuit 11, the sub-processing system interface circuit 13 and the data format conversion circuit 12 are all It can be set on the PCB main board 14.

As an exemplary implementation of setting the main computer interface circuit 11, the sub-processing system interface circuit 13, and the data format conversion circuit 12, the main computer interface circuit 11 and the sub-processing system interface circuit 13 may be respectively disposed at opposite ends of the PCB main board 14. For example, the main computer interface circuit 11 is located at the top corner of one end of the PCB main board 14, and the sub-processing system interface circuit 13 is located at the top corner of the other end of the PCB main board 14, and the two top corners are diagonal. In this way, the distance between the main computer interface circuit 11 and the sub-processing system interface circuit 13 is far enough, so as to isolate the main computer interface circuit 11 and the sub-processing system interface circuit 13 from each other, avoiding the mutual separation between the two circuits. Interference also avoids communication interference between the sub-processing system interface circuit 13 and the host computer interface circuit 11 due to space radiation.

On this basis, and in order to avoid interference from space radiation on the communication between the data format conversion circuit 12 and the host computer interface circuit 11 and the sub-processing system interface circuit 13, in one embodiment, the data format conversion circuit 12 may be located The mid-section position between the two ends of the PCB main board 14 makes the data format conversion circuit 12 and the host computer interface circuit 11 and the sub-processing system interface circuit 13 far away from each other, so that the data format conversion circuit 12 and the host computer interface The circuit 11 and the sub-processing system interface circuit 13 play a role of mutual isolation, avoiding mutual interference between the three circuits, and also avoiding space radiation, so that the data format conversion circuit 12 interfaces with the main computer interface circuit 11 and the sub-processing system The communication between the circuits 13 interferes with each other.

Of course, it can be understood that the arrangement of the main computer interface circuit 11, the sub-processing system interface circuit 13 and the data format conversion circuit 12 provided above on the PCB motherboard 14 is only an example; in some other possible embodiments of this application, For example, the host computer interface circuit 11 and the host computer can be configured together, and only the sub-processing system interface circuit 13 and the data format conversion circuit 12 are provided on the opposite ends of the PCB main board 14, so as to avoid interference between each circuit due to space radiation. Interference caused by inter-communication.

In addition, in addition to the above-mentioned adjustment of the distance between circuits to avoid communication interference caused by space radiation, in some other possible implementation manners of this application, the thickness of the PCB main board 14 can also be increased, for example, the PCB main board The thickness of 14 is increased to 2.0mm~2.5mm, for example, it can be 2.0mm, 2.3mm or 2.5mm, etc., and the main computer interface circuit 11 and the sub-processing system interface circuit 13 are arranged on the surface of the PCB main board 14. And the data format conversion circuit 12 is arranged on the surface of the PCB main board 14 on the other side of the PCB motherboard 14 away from the sub-processing system interface circuit 13 (for example, the data format conversion circuit 12 in FIG. 6 is a dotted line indicating the host computer interface circuit 11 and the sub-processing system interface The circuit 13 and the data format conversion circuit 12 are respectively located on different surfaces), so that the circuits are located on different surfaces of the PCB motherboard 14, so that the distance between the main computer interface circuit 11 and the sub-processing system interface circuit 13 can be greater, and the main computer The isolation effect of the interface circuit 11 and the sub-processing system interface circuit 13 reduces the interference between the main computer interface circuit 11 and the sub-processing system interface circuit 13, and the data format conversion circuit 12 is arranged on the other side of the PCB main board 14. Using the PCB main board 14 as an isolator enhances the isolation effect of the data format conversion circuit 12 from the main computer interface circuit 11 and the sub-processing system interface circuit 13, and further reduces the mutual interference between the three circuits.

Of course, it can be understood that, in the above-mentioned implementation in which the host computer interface circuit 11 and the host computer can be configured together, the thickness of the PCB motherboard 14 is increased to avoid communication interference caused by space radiation. The data format conversion circuit 12 and the sub-processing system interface circuit 13 can be respectively arranged on two opposite surfaces of the PCB main board 14. For example, the data format conversion circuit 12 and the sub-processing system interface circuit 13 can be disposed on two PCB main boards 14 respectively. The middle position of the opposite surface.

In addition, in some possible scenarios, the sub-processing system 20 and the main computer may be provided by two different manufacturers. When the sub-processing system manufacturer selects the main computer manufacturer (also known as the satellite platform provider) for cooperation, The main computer manufacturer generally does not give the output surge parameters, which makes it easy for the sub-processing system manufacturer to ignore the surge problem. However, the destructiveness of the surge is also concealed, and not every surge output will cause the subsystem to stop working. Therefore, it is not easy for sub-system manufacturers to realize that their own sub-processing systems will be damaged by the surge of the main computer.

However, due to the uneven technical level of current main computer manufacturers, there are indeed some main computers with excessive output surges in some practical applications. If this problem is not found during ground testing, once it is launched into the sky, if the sub-processing system is damaged by the surge, the entire sub-processing system can no longer be repaired, and the loss will be heavy. Therefore, it is necessary to suppress the peak electrical signal generated by the host computer to ensure the stability of the entire satellite operation.

To this end, in an optional embodiment, the star service data transmission device may further include an interface protection circuit, and the host computer interface circuit is connected to the data format conversion circuit through the interface protection circuit; the interface protection circuit can inhibit the host computer from turning The sub-processing system 20 outputs a surge peak electrical signal, and suppresses the peak electrical signal to be less than a preset value, so that the sub-processing system 20 receives the suppressed peak electrical signal.

It should be noted that the above-mentioned interface protection circuit can also have various forms, for example, it can be a resistance current-limiting type, a voltage regulator tube type, or an integrated interface chip. For example, the interface protection circuit can adopt a model of sn74avc4t774 Integrated chip.

Among them, when the integrated interface chip is directly used, the communication rate of the entire system is higher, and at the same time, it is not easy to be damaged.

Of course, it’s worth pointing out that the models of the above-mentioned chips are only exemplary. It is understandable that other integrated chips with high driving capability and high impedance input/output characteristics can also be used as interface protection circuits. The specific chip model used in the circuit is not limited.

Referring to FIG. 7, an embodiment of the present application provides a satellite service data transmission method, which is applied to a data format conversion circuit 12 in a satellite. The satellite service data transmission method includes steps S100 and S200.

Step S100: Receive star service data sent by the host computer.

Step S200: Convert the data format of the star services data into a data format adapted to the sub-processing system, and send the star services data in the converted data format to the sub-processing system.

Wherein, step S100 specifically includes: receiving the satellite service data sent by the host computer at a second transmission rate.

Correspondingly, step S200 specifically includes: sending the satellite service data in the converted data format to the sub-processing system at a first transmission rate, wherein the first transmission rate is greater than the second transmission rate.

It should be noted that, for the convenience and conciseness of the description, the specific execution process of the above described method can refer to the corresponding process in the foregoing system, device, and unit embodiment, which will not be repeated here.

Some embodiments of the present application also provide a computer-executable non-volatile program code storage medium. The storage medium can be a general storage medium, such as a mobile disk, a hard disk, and the like. A program code is stored on the storage medium, and when the program code is run by a computer, the steps of the satellite service data transmission method in any of the above embodiments are executed.

The program code product of the data request method provided by the embodiment of the application includes a computer-readable storage medium storing the program code. The instructions included in the program code can be used to execute the method in the previous method embodiment. For specific implementation, please refer to the aforementioned method Examples, this application will not be repeated here.

Finally, it should be noted that the above descriptions are only part of the embodiments of this application, and are not intended to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, it is still for those skilled in the art. The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Industrial applicability

Since the data format conversion circuit can convert the data format of Star Affairs data into a data format adapted to the sub-processing system, the sub-processing system does not need to communicate and debug its own system with other systems after each iteration of the update, that is, The data to be processed sent by the host computer can be directly processed. Through the technical solution provided by this embodiment, the sub-processing system can iterate according to its own data processing mode, without debugging the communication mode of each host computer, which not only saves the time required for iteration, but also avoids A lot of repeated debugging work.

Claims

A satellite services data transmission device, characterized in that the satellite services data transmission device is applied to a satellite, the satellite includes a sub-processing system and a host computer configured to manage the sub-processing system, and the sub-processing system passes The star services data transmission device is connected to the host computer, and the star services data transmission device includes:

A host computer interface circuit, the host computer interface circuit is connected to the host computer, and the host computer interface circuit is configured to receive star service data sent by the host computer;

A data format conversion circuit, the data format conversion circuit is respectively connected with the host computer interface circuit and the sub-processing system, the data format conversion circuit is configured to convert the data format of the star service data into The data format adapted by the processing system is divided, and the satellite service data after the converted data format is sent to the processing system.
The satellite services data transmission equipment according to claim 1, wherein:

After the host computer interface circuit converts the satellite service data into the satellite service data whose corresponding data format is a differential signal, it sends the satellite service data whose data format is a differential signal to the data format conversion circuit.
The satellite services data transmission device according to claim 1 or 2, characterized in that:

The data format conversion circuit is configured to determine a data format adapted to the sub-processing system from a plurality of preset data formats, and convert the data format of the star service data into the determined data format.
The star services data transmission device according to claim 1, wherein the star services data transmission device further comprises:

A sub-processing system interface circuit, the sub-processing system interface circuit is respectively connected to the data format conversion circuit and the sub-processing system, and the sub-processing system interface circuit is configured to receive the conversion sent by the data format conversion circuit The satellite services data in the data format, and send the satellite services data in the converted data format to the sub-processing system at the first transmission rate; wherein, the host computer interface circuit receives the data at the second transmission rate The satellite service data of the host computer is sent to the data format conversion circuit, and the first transmission rate is greater than the second transmission rate.
5. The satellite service data transmission device of claim 4, wherein the first transmission rate is 1.5 to 2.5 times the second transmission rate.
The satellite service data transmission device according to claim 5, wherein the first transmission rate is twice the second transmission rate.
The satellite services data transmission device according to claim 4, wherein:

The host computer interface circuit is connected to the host computer through I2C bus and SPI bus, the host computer interface circuit is also connected to the data format conversion circuit through CAN bus and SPI bus, and the data format conversion circuit is connected through Ethernet The net is connected with the interface circuit of the sub-processing system.
The star services data transmission device according to any one of claims 4-7, wherein the star services data transmission device further comprises:

PCB main board, the main computer interface circuit, the sub-processing system interface circuit and the data format conversion circuit are all arranged on the PCB main board, the main computer interface circuit is located at one end of the PCB main board, and the sub- The processing system interface circuit is located at the other end of the PCB main board, and the data format conversion circuit is located in the middle section between the two ends of the PCB main board.
The star services data transmission device according to any one of claims 4-7, wherein the star services data transmission device further comprises:

PCB main board, the thickness of the PCB main board is 2.0mm ~ 2.5mm, the main computer interface circuit and the sub-processing system interface circuit are arranged on the surface of one side of the PCB main board, and the data format conversion circuit is arranged on The surface of the PCB on the other side facing away from the main computer interface circuit.
The star service data transmission device according to claim 1, wherein the star service data transmission device further comprises an interface protection circuit, and the host computer interface circuit is connected to the data format conversion circuit through the interface protection circuit ；

The interface protection circuit is configured to suppress the peak electrical signal output by the host computer to the sub-processing system to be less than a preset value, so that the sub-processing system receives the suppressed peak electrical signal.
The satellite services data transmission equipment according to claim 1, wherein:

The satellite includes a plurality of sub-processing systems, and the data format conversion circuit establishes a connection with each of the sub-processing systems;

The data format conversion circuit sends the satellite service data to a target sub-processing system according to the identifier contained in the satellite service data; wherein, the target sub-processing system is the one among the multiple sub-processing systems and the Identify the corresponding sub-processing system.
The satellite services data transmission equipment according to claim 1, wherein:

The data format conversion circuit is configured to receive the sub-system data sent by the sub-processing system, convert the data format of the sub-system data into a data format adapted to the host computer, and convert the data format The sub-system data of is sent to the host computer interface circuit, so that the host computer interface circuit sends the sub-system data in the converted data format to the host computer.
The satellite services data transmission equipment according to claim 12, wherein:

The data format conversion circuit is configured to determine a data format adapted to the host computer from a plurality of preset data formats, and convert the data format of the sub-system data into the determined data format.
A satellite service data transmission method, characterized in that the satellite service data transmission method is applied to a data format conversion circuit in a satellite, and the satellite further includes a sub-processing system and a host computer configured to manage the sub-processing system , The sub-processing system is connected to the host computer through a satellite service data transmission device, and the method includes:

Receiving star service data sent by the host computer;

The data format of the star service data is converted into a data format adapted to the sub-processing system, and the star service data after the converted data format is sent to the sub-processing system.
The satellite service data transmission method according to claim 14, wherein receiving the satellite service data sent by the host computer comprises:

Receiving the satellite services data sent by the host computer at a second transmission rate;

Correspondingly, sending the star service data after the converted data format to the sub-processing system includes:

The satellite service data after the converted data format is sent to the sub-processing system at a first transmission rate, wherein the first transmission rate is greater than the second transmission rate.
A computer-executable non-volatile program code storage medium, the storage medium stores the program code, characterized in that the program code is executed when the computer is running the satellite service data transmission method described in claim 14 or 15 .