Ground equipment for high-speed telemetry and remote control communication based on J30J interface satellite-earth measurement and control data transmission integration

Abstract

The application provides a kind of ground equipment of high-speed telemetry remote control communication based on J30J interface satellite-ground measurement and control data transmission integration, comprising: telemetry interface: provide 2-way wired telemetry command signal, and the integrated electronic computer on satellite sends whole satellite telemetry data frame to ground equipment through star table connector two-wire synchronous RS422 interface;Remote control interface: provide 2-way wired telemetry command signal, and the interface adopts synchronous RS422 interface form;Self-closing loop interface: provide 2 self-closing loop cables or plugs, and carry out function check to all RS422 interface input and output.The application supports two kinds of communication modes of general measurement and control and measurement and transmission integration, connects directly through star table plug, switching cable and satellite, can carry out wired control, detection and state display to satellite in satellite ground test process, so as to check satellite function response and performance index, obtain satellite test data, and verify the correctness of satellite work.

Description

Technical Field

[0001] This invention relates to the field of satellite ground testing technology, specifically to a high-speed telemetry, telemetry, and remote control communication ground device based on the J30J interface that integrates satellite-ground telemetry, telemetry, and data transmission. Background Technology

[0002] Some satellites, during their design process, incorporate wired telemetry and control interfaces on their satellite arrays that connect directly to an integrated computer to meet satellite testing requirements. During testing, these interfaces connect to ground equipment via satellite array connectors, receiving control signals from the ground. The ground equipment samples and displays the status signals transmitted by the satellite. This process checks the satellite's functional response and performance indicators, obtains satellite test data, and verifies the correctness of the satellite's operation.

[0003] Currently, the integrated telemetry, telemetry, and data transmission system is gradually becoming more common in satellites, and satellite testing tasks are constantly increasing. Different satellites have different characteristics in terms of remote control and telemetry information rates, data formats, and other parameters. The number and functional requirements of satellite ground testing equipment are also constantly increasing. Traditional PCM wired equipment does not support the integrated telemetry, telemetry, and data transmission system and lacks versatility and reusability.

[0004] Patent document CN115955266A discloses an integrated communication, navigation, and remote sensing satellite, constellation, and method for their functional linkage. The satellite includes a remote sensing payload, a GNSS receiver, a communication payload, a telemetry and control transponder, a data transmission unit, an intelligent switching unit, an integrated electronic unit, an atomic clock, a storage unit, and inter-satellite transmission equipment. Multiple integrated communication, navigation, and remote sensing satellites transmit information through inter-satellite transmission equipment and form a constellation. However, this patent cannot completely solve the existing technical problems, nor can it meet the needs of this invention. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-speed telemetry, telecontrol, and ground communication device based on the J30J interface that integrates satellite-to-ground telemetry, telemetry, and data transmission.

[0006] The ground equipment for high-speed telemetry, telemetry, and remote control communication based on the J30J interface, according to the present invention, includes:

[0007] Telemetry Interface: Provides two wired telemetry command signals. The onboard integrated computer sends whole-satellite telemetry data frames to ground equipment via a two-wire synchronous RS422 interface of the satellite table connector. The signals sent by the integrated computer include data signals and clock signals. The rising edge of the clock signal is aligned with the transition edge of the data signal. The ground equipment collects data on the falling edge of the clock signal. When there is no data downlink, both the clock signal and the data signal are at a high level. The telemetry signals include one telemetry PCM signal and one clock signal. The rising edge of the telemetry PCM signal is aligned with the rising edge of the clock signal, and the rising edge of the clock signal is aligned with the transition edge of the data signal.

[0008] Remote control interface: Provides two wired telemetry command signals, using a synchronous RS422 interface; the remote control signals include one remote control PCM signal, one clock signal, and one gating signal. The rising edge of the remote control PCM signal is aligned with the rising edge of the clock signal; the gating signal is active low; the rising edge of the clock signal is aligned with the transition edge of the data signal; the rising edge of the clock signal is aligned with the transition edge of the data signal.

[0009] Self-closing loop interface: Provides two self-closing loop cables or plugs to perform functional checks on all RS422 interface inputs and outputs.

[0010] Preferably, the clock signal is a square wave with a duty cycle of 50% ± 5%, and the mutual error is no greater than 5% of the clock signal pulse width. The falling edge of the clock signal is aligned with the middle of the telemetry PCM code or the remote control PCM code.

[0011] Preferably, both the telemetry interface and the remote control interface have a voltage level of 5V.

[0012] Preferably, the telemetry code rate of both the telemetry PCM signal and the clock signal is 10bps~1200kbps; the remote control code rate of both the remote control PCM signal and the clock signal is 10bps~1200kbps; and the self-closed-loop code rate is 10bps~1200kbps.

[0013] Preferably, when the gating signal is valid, the integrated electronic computer acquires data on the falling edge of the clock; when the gating signal is invalid, the measurement and transmission equipment outputs a high level clock signal and a high or low level data output signal.

[0014] Preferably, before satellite testing, the ground equipment is connected to the satellite table via a PCM satellite-to-ground adapter cable and an adapter cable. The remote control and telemetry code rate and frame format parameters are configured according to the actual situation of the satellite, and the ground equipment is connected to the telemetry / control / data transmission backend equipment through a network interface. After the ground equipment software starts, it performs an initialization self-test. If a connection abnormality occurs, an alarm will be automatically triggered.

[0015] Preferably, after the satellite is powered on, the satellite sends data signals and clock signals to the ground equipment through the two-wire synchronous RS422 interface of the satellite display connector, and the ground equipment sends clock signals, gating signals and data signals to the satellite through the two-wire synchronous RS422 interface of the satellite display connector.

[0016] Preferably, the ground equipment software receives control signals and uplink remote control signals, and sends them to the integrated serial telemetry and control processing board via a serial port; the ground equipment software receives status feedback signals and telemetry signals from the integrated serial telemetry and control processing board, and sends them to the backend client software.

[0017] Preferably, the system obtains synchronous downlink RS422 interface serial telemetry data from the satellite-to-ground wired channel through the operating platform control software, and distributes the integrated telemetry and transmission data to multiple back-end client software through the network interface according to the general telemetry and control protocol. At the same time, it obtains remote control frame information from the back-end client software through the network interface according to the general telemetry and control protocol, and transmits it to the satellite in real time at a set rate through the synchronous three-wire RS422 serial port.

[0018] Preferably, the RS422 interface adopts a differential transmission design, selects an RS422 interface chip with interface power supply isolation, and the ground of the local RS422 interface side is the same as the ground of the remote device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) This invention provides a high-speed telemetry and remote control communication ground equipment based on the J30J interface, which has the function of uplink channel remote control frame transmission, the function of downlink real-time transmission of high-speed telemetry data controlled by the operating platform, and the function of data distribution and conversion. It can distribute data to the backend in real time according to the telemetry and control and data transmission protocols respectively.

[0021] (2) This invention supports two communication modes: general telemetry and control and telemetry and transmission integration. It can be directly connected to the satellite via a satellite plug and adapter cable. During the satellite ground test, it can perform wired control, detection and status display on the satellite, thereby checking the satellite's functional response and performance indicators, obtaining satellite test data and verifying the correctness of the satellite's operation. Attached Figure Description

[0022] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 A simplified connection diagram for ground equipment using the J30J interface-based integrated high-speed telemetry, telemetry, and data transmission system;

[0024] Figure 2 This is a simplified diagram of the self-test connection of the ground equipment for integrated high-speed telemetry, telemetry, and remote control communication based on the J30J interface;

[0025] Figure 3 Timing diagram for receiving satellite wired telemetry signals from ground equipment based on J30J interface-integrated high-speed telemetry, telemetry, and data transmission;

[0026] Figure 4 Timing diagram for receiving remote control signals from ground equipment based on the J30J interface for satellite remote control unit to receive remote control signals from satellite-ground integrated high-speed telemetry and remote control communication equipment;

[0027] Figure 5This is an information flow diagram of the testing process for ground equipment based on the J30J interface, which integrates satellite-ground telemetry, telemetry, and data transmission for high-speed telemetry, telemetry, and remote control communication.

[0028] Figure 6 This is a diagram of the software interface for a ground-based high-speed telemetry, telemetry, and remote control communication device based on the J30J interface;

[0029] Figure 7 Schematic diagram of RS422 interface communication for ground equipment based on J30J interface-integrated high-speed telemetry and remote control communication for satellite-ground telemetry and data transmission. Detailed Implementation

[0030] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0031] Example

[0032] This invention provides a high-speed telemetry, telemetry, and remote control communication ground device based on the J30J interface, which is achieved through the following technical solution:

[0033] Telemetry Interface: Provides two wired telemetry command signals; the onboard integrated computer sends whole-satellite telemetry data frames to ground-based equipment via a two-wire synchronous RS422 interface of the satellite table connector, with an interface level of 5V. The signals sent by the channel gateway module of the integrated computer include data signals and clock signals. The rising edge of the clock signal is aligned with the transition edge of the data signal. Ground equipment acquires data on the falling edge of the clock signal. When there is no downlink data, both the clock and data signals are at a high level. Telemetry signals include one telemetry PCM signal and one clock signal (CP). The rising edge of the telemetry PCM signal is aligned with the rising edge of the clock signal, and the PCM signal and clock signal are in phase. The telemetry code rate is 10bps~1200kbps, adjustable in 1bps. The telemetry synchronization frame header and telemetry frame length are configurable. The clock signal is a square wave with a duty cycle of 50%±5%. The rising edge of the clock signal is aligned with the transition edge of the data signal, with a mutual error not exceeding 5% of the clock signal pulse width. The falling edge of the clock signal is aligned with the center of the PCM code for data acquisition.

[0034] Remote control interface: Provides two wired telemetry command signals, using a synchronous RS422 interface with a 5V voltage level. The remote control signals include one remote control PCM signal, one clock signal (CP), and one gating signal (LOCK). The rising edge of the remote control PCM signal is aligned with the rising edge of the clock signal, and the PCM signal and clock signal are in phase. The remote control code rate is 10bps~1200kbps, adjustable in 1bps. The gating signal (LOCK) is active low, with the rising edge of the clock signal aligned with the data signal transition edge. When the gating signal is active, the integrated computer acquires data on the falling edge of the clock signal; when the gating signal is inactive, the dedicated measurement and transmission equipment outputs a high level clock signal and either a high or low level data signal. The clock signal is a square wave with a duty cycle of 50%±5%. The rising edge of the clock signal is aligned with the data signal transition edge, with a mutual error not exceeding 5% of the clock signal pulse width. The falling edge of the clock signal is aligned with the center of the PCM code for data acquisition.

[0035] Self-closing loop interface: Provides two self-closing loop cables or plugs for self-closing loop, performs functional checks on all RS422 interface inputs and outputs, and each plug contains a telemetry analog source and a telemetry receiving channel. The self-closing loop code rate is 10bps~1200kbps, adjustable in 1bps.

[0036] like Figure 1 Before satellite testing, the equipment is connected to the satellite array via a PCM wired long cable and a dedicated adapter cable. Parameters such as remote control and telemetry code rate and frame format are configured according to the actual satellite conditions, and the equipment is connected to the backend telemetry / control / data transmission equipment via a network interface. After the equipment software starts, it automatically initializes and performs a self-test. Once the module initialization is confirmed to be normal, the software enters the control interface. An automatic alarm is triggered if any connection abnormality occurs.

[0037] After the satellite is powered on, it sends data signals and clock signals to the ground-based dedicated equipment through the two-wire synchronous RS422 interface of the satellite display connector. The equipment sends clock signals, gating signals and data signals to the satellite through the two-wire synchronous RS422 interface of the satellite display connector.

[0038] The device software communicates with the integrated serial measurement and control processing board via a serial port. The integrated measurement and transmission communication device software receives control signals and uplink remote control signals from the forwarding software and sends them to the integrated serial measurement and control processing board; it also receives status feedback signals and telemetry signals from the integrated serial measurement and control processing board and sends them to the backend software. The operating platform control software distributes integrated telemetry data to the backend client software via a network interface using a configurable port number according to the measurement and control protocol; the data distribution and conversion software requests measurement and transmission data from the operating platform control software and performs real-time frame synchronization to remove baseband formatting and extract complete telemetry frames with configurable byte lengths. The frame header used for frame synchronization is configured by the user interface. After extracting the complete telemetry frame, the software distributes the data to the backend data transmission client according to the data transmission protocol.

[0039] This invention provides a high-speed telemetry and remote control communication ground device based on the J30J interface, which integrates satellite-to-ground telemetry, telemetry, and data transmission. The device includes an integrated serial telemetry and control processing board, a system board, operating platform control software, data distribution and conversion software, adapter cables, PCM satellite-to-ground adapter cables, and a self-test plug.

[0040] The PCM satellite-to-ground adapter cable connects the satellite to the integrated high-speed telemetry, telemetry, and data transmission ground equipment. The satellite end uses a satellite display connector, and the ground equipment connection end uses a J30J connector. The equipment consists of an integrated telemetry and data transmission processing board, a system board, and other hardware. The software system running on this equipment comprises operating platform control software and data distribution and conversion software. The system board connects to the backend equipment via a network; see details below. Figure 1 .

[0041] See the PCM satellite-to-ground adapter cable and self-test connection diagram. Figure 2 The self-test plug J30J-74TJ is plugged into the connector J30J-74ZK on the processing board of the "Integrated Measurement and Control Data Transmission High-Speed ​​Telemetry and Remote Control Communication Equipment". The self-closing switch test is completed through the internal node signal communication connection of the connector.

[0042] The equipment provides two wired telemetry signal reception channels. Each telemetry signal includes one telemetry PCM signal and one clock signal (CP). The rising edge of the telemetry PCM signal is aligned with the rising edge of the clock signal, and the PCM signal and clock signal are in phase. The clock signal is a square wave with a duty cycle of 50% ± 5%. The rising edge of the clock signal is aligned with the data signal transition edge, and the mutual error is no greater than 5% of the clock signal pulse width. Figure 3 As shown. The interface adopts a synchronous RS422 interface with a voltage level of 5V. The code rate is 10bps~1200kbps, adjustable in 1bps, with typical rates of 8196bps, 16384bps, and 1049088bps; the telemetry synchronization frame header and telemetry frame length are configurable. Typical signal node configurations are as follows:

[0043] Table 1. Downlink Signal Nodes of Ground Equipment Based on J30J Interface-Based Satellite-Ground Telemetry, Telemetry and Data Transmission Integration High-Speed ​​Telemetry and Remote Control Communication

[0044]

[0045] The device provides two wired remote control command signals. Each remote control signal includes one remote control PCM signal, one clock signal (CP), and one remote control lock signal (LOCK). The rising edge of the remote control PCM signal is aligned with the rising edge of the clock signal, and the PCM signal and clock signal are in phase. The clock signal is a square wave with a duty cycle of 50% ± 5%, and the rising edge of the clock signal is aligned with the transition edge of the data signal. Figure 4As shown. The interface adopts a synchronous RS422 interface with a 5V voltage level. The code rate in normal remote control mode is 10bps~1200kbps, adjustable in 1bps increments, with a typical rate of 2000bps; the high-speed mode simultaneously supports dual-channel 2Mbps high-speed wired telemetry and remote control. Typical signal node configurations are as follows:

[0046] Table 2. Uplink signal node table for ground equipment based on J30J interface-integrated high-speed telemetry and remote control communication for satellite-ground telemetry and data transmission.

[0047]

[0048] Provides a self-closing loop connector for closed-loop self-testing. Figure 2 All RS422 interface inputs and outputs undergo functional checks. A self-test connector enables the telemetry interface to perform self-tests; each RS422 interface corresponds one-to-one with the telemetry analog source of the onboard central management unit and the board. Functional checks include: wired remote control clock positive and negative terminal communication checks, wired remote control gate control positive and negative terminal communication checks, wired remote control data positive and negative terminal communication checks, remote control secondary ground checks, wired telemetry clock positive and negative terminal communication checks, wired telemetry data positive and negative terminal communication checks, and telemetry secondary ground positive and negative terminal communication checks, etc. See Table 3 for details.

[0049] A typical signal node configuration is as follows:

[0050] Table 3. Self-test signal nodes of ground equipment based on J30J interface-integrated high-speed telemetry, remote control and communication system for satellite-to-ground telemetry, telemetry and data transmission.

[0051]

[0052] We provide a dedicated synchronous serial adapter cable for measurement and transmission. The cable equipment end connector is J30J-74TJ, and the other end of the cable is a satellite meter end connector.

[0053] Provide platform control software ( Figure 6 It can obtain synchronous downlink RS422 serial telemetry data from the satellite-to-ground wired channel and distribute integrated telemetry and transmission data to multiple back-end client software via network interface according to the general telemetry and control protocol. At the same time, it can obtain remote control frame information from the back-end client software via network interface according to the general telemetry and control protocol and transmit it to the satellite in real time at a set rate via synchronous three-wire RS422 serial port.

[0054] The software provides data distribution and conversion capabilities, enabling communication with the operating platform control software via a common telemetry and control protocol. It acquires satellite downlink transmission frames from the operating platform control software. The software performs real-time frame synchronization of the received data, removes the common telemetry and control protocol format, and extracts the satellite remote sensing frames. Parameters such as the frame header, frame length, and frame format of the satellite remote sensing frames can be configured via the user interface. After extracting the complete satellite remote sensing frames, the software distributes data to the backend data transmission client according to a common data transmission protocol. Both the received downlink transmission frames and the distributed satellite remote sensing frames can be stored locally on the software operating platform for later verification. See the detailed information flow... Figure 5 .

[0055] The RS422 interface uses a differential transmission design. Figure 7 The RS422 interface chip with interface power isolation is selected. The ground of the local RS422 interface side and the ground of the remote device should be unified to eliminate the terrain difference between the two ends of the communication and better ensure the safety and reliability of the interface.

[0056] Those skilled in the art will understand that, in addition to implementing the system, apparatus, and their modules provided by this invention in purely computer-readable program code, the same program can be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system, apparatus, and their modules provided by this invention can be considered a hardware component, and the modules included therein for implementing various programs can also be considered structures within the hardware component; alternatively, modules for implementing various functions can be considered both software programs implementing the method and structures within the hardware component.

[0057] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A high-speed telemetry, telemetry, and remote control communication ground device based on the J30J interface, characterized in that, include: Telemetry Interface: Provides two wired telemetry command signals. The onboard integrated computer sends whole-satellite telemetry data frames to ground equipment via a two-wire synchronous RS422 interface of the satellite table connector. The signals sent by the integrated computer include data signals and clock signals. The rising edge of the clock signal is aligned with the transition edge of the data signal. The ground equipment collects data on the falling edge of the clock signal. When there is no data downlink, both the clock signal and the data signal are at a high level. The telemetry signals include one telemetry PCM signal and one clock signal. The rising edge of the telemetry PCM signal is aligned with the rising edge of the clock signal, and the rising edge of the clock signal is aligned with the transition edge of the data signal. Remote control interface: Provides two wired telemetry command signals, using a synchronous RS422 interface; the remote control signals include one remote control PCM signal, one clock signal, and one gating signal. The rising edge of the remote control PCM signal is aligned with the rising edge of the clock signal; the gating signal is active low; the rising edge of the clock signal is aligned with the transition edge of the data signal; the rising edge of the clock signal is aligned with the transition edge of the data signal. Self-closing loop interface: Provides two self-closing loop cables or plugs to perform functional checks on all RS422 interface inputs and outputs.

2. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... The clock signal is a square wave with a duty cycle of 50% ± 5%, and the mutual error is no greater than 5% of the clock signal pulse width. The falling edge of the clock signal is aligned with the middle of the telemetry PCM code or the remote control PCM code.

3. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... Both the telemetry interface and the remote control interface have a voltage level of 5V.

4. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... The telemetry code rate of both the telemetry PCM signal and the clock signal is 10bps~1200kbps; the remote control code rate of both the remote control PCM signal and the clock signal is 10bps~1200kbps; and the self-closed-loop code rate is 10bps~1200kbps.

5. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, characterized in that, When the gating signal is valid, the integrated electronic computer collects data on the falling edge of the clock; when the gating signal is invalid, the measurement and transmission equipment outputs a high level clock signal and a high or low level data output signal.

6. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... Before satellite testing, the ground equipment is connected to the satellite table via PCM satellite-to-ground adapter cable and adapter cable. The remote control and telemetry code rate and frame format parameters are configured according to the actual situation of the satellite. The equipment is then connected to the telemetry / control / data transmission backend equipment via a network interface. After the ground equipment software starts, it performs an initial self-test. If a connection abnormality occurs, an alarm will be automatically triggered.

7. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... After the satellite is powered on, it sends data signals and clock signals to the ground equipment through the two-wire synchronous RS422 interface of the satellite display connector. The ground equipment sends clock signals, gating signals and data signals to the satellite through the two-wire synchronous RS422 interface of the satellite display connector.

8. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... The ground equipment software receives control signals and uplink remote control signals, and sends them to the integrated serial telemetry and control processing board via serial port; the ground equipment software receives status feedback signals and telemetry signals from the integrated serial telemetry and control processing board, and sends them to the backend client software.

9. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, is characterized in that... The platform control software obtains synchronous downlink RS422 interface serial telemetry data from the satellite-to-ground wired channel, and distributes the integrated telemetry and transmission data to multiple back-end client software through the network interface according to the general telemetry and control protocol. At the same time, it obtains remote control frame information from the back-end client software through the network interface according to the general telemetry and control protocol, and sends it to the satellite in real time at a set rate through the synchronous three-wire RS422 serial port.

10. The high-speed telemetry, telemetry, and remote control communication ground equipment based on the J30J interface for satellite-to-ground telemetry, telemetry, and data transmission as described in claim 1, characterized in that, The RS422 interface adopts a differential transmission design, selects an RS422 interface chip with interface power supply isolation, and the ground on the local RS422 interface side is the same as the ground on the remote device.

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