CN-122027489-A - Time-triggered Ethernet bus analog equivalent equipment and construction method thereof

CN122027489ACN 122027489 ACN122027489 ACN 122027489ACN-122027489-A

Abstract

The invention provides a time-triggered Ethernet bus simulation equivalent device and a construction method thereof, wherein the device injects bus data flow consistent with a real system by simulating the working mode of a communication node after bus parameter configuration, and performs physical simulation analysis on the rationality of bus parameter configuration according to information receiving and transmitting conditions in a simulation environment so as to ensure the correctness of bus communication. The bus simulation equivalent equipment is used for equivalently replacing part of equipment in the TTE network, simulating the real equipment to send/receive messages of other equipment in the network, monitoring and recording data in the system network, simulating network faults and application message anomalies of a network node protocol layer and above, and realizing normal and abnormal coverage test of a system or an interface protocol.

Inventors

ZHONG CHENG
HU HAIFENG
LING ZHEN
YANG JINHE
ZHENG WEI
ZHOU HU

Assignees

北京航天自动控制研究所

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. The method for constructing the time-triggered Ethernet bus analog equivalent equipment is characterized by comprising the following steps of: (1) Constructing TTE simulation nodes; (2) TTE virtual bus configuration; (3) System configuration and operation.
2. The method for constructing a time-triggered ethernet bus analog equivalent device according to claim 1, wherein said TTE emulation node construction specifically comprises: Step 1, a synchronous interface of the TTE virtual bus sends a synchronous signal to the virtual bus period, and simultaneously pauses software to wait for receiving a confirmation signal, and continues to operate after receiving the confirmation signal; Step 2, a data interaction interface with a TTE virtual bus, which relates to each bus, a link and an interface; And 3, receiving commands such as control, state acquisition and the like of the virtual bus by a control interface of the TTE virtual bus, and replying state information and the like to the virtual bus.
3. The method for constructing a time-triggered ethernet bus analog equivalent device according to claim 1, wherein said TTE virtual bus configuration specifically comprises: Step 1, a simulation beat synchronization module is responsible for transmission of synchronization signals, and simulation connection is responsible for management of source addresses and destination addresses of data transmission; And 2, analyzing the real-time data and monitoring the real-time data to process the interactive data of each node, wherein the interactive data comprises system running state information, control commands and fault modes.
4. The method for constructing a time-triggered ethernet bus analog equivalent device according to claim 1, wherein said system configuration and operation specifically comprises: Step 1, TTE simulation node number, configuration item software represented by the nodes, communication modes among configuration items, system synchronization period and the like; and 2, providing a system state interface, wherein the system state interface comprises the running time of the system, the time sequence of each configuration item and the interactive data among nodes.
5. A time triggered ethernet bus analog equivalent device, characterized by being built by the building method of any of claims 1-4.
6. The time triggered ethernet bus analog equivalent device according to claim 5, wherein said device is used for equivalently replacing some devices in TTE network, simulating real devices to send and receive messages of other devices in the network, monitoring and recording data in system network, simulating network faults and application message anomalies at and above network node protocol layer, and realizing normal and abnormal coverage test of system or interface protocol.
7. The time-triggered ethernet bus analog equivalent device of claim 5, wherein the functions of the device comprise AS6802 synchronization process simulation, accurate time stamping, traffic generation, network configuration loading, traffic capture, fault injection, test software.
8. The Ethernet bus analog equivalent device of claim 7, wherein the fault types in the fault injection comprise CRC error of BE frame, frame loss, transmission redundancy control of PRP frame, LDSP and frame length inconsistency, channel number inconsistency, frame sequence number inconsistency, CRC error and transmission redundancy control of TT/RC frame, frame sequence number inconsistency, CRC error, VL time window error, VL Bubbling error.
9. The time triggered Ethernet bus analog equivalent device of claim 7, wherein the traffic types comprise PCF frames, TT frames, RC frames, BE frames, and traffic priorities are TT > PCF > RC > BE.
10. The time triggered ethernet bus analog equivalent device of claim 9, wherein the user data fields of the TT frame, RC frame and BE frame messages support both automatic generation and application software setup.

Description

Time-triggered Ethernet bus analog equivalent equipment and construction method thereof Technical Field The invention belongs to the field of network simulation verification, and particularly relates to time-triggered Ethernet bus simulation equivalent equipment. Background The new generation manned rocket adopts a unified TTE bus as a backbone network, and faces the new characteristics of large site scale, multiple network cascading hops and the like, and the simulation and verification of the new bus are necessary to develop research. The common Ethernet bus network simulation verification capability cannot evaluate the carrier rocket bus design, and is difficult to simulate and verify the rationality and the correctness of information flow dispatching. On the basis of referencing the existing Ethernet test and simulation technology, the method is adaptively expanded and improved to form simulation equivalent and test equipment for the time-triggered Ethernet. Disclosure of Invention The invention aims to solve the problems in the prior art, and the invention injects bus data flow consistent with a real system by simulating the working mode of a communication node after bus parameter configuration, carries out physical simulation analysis on the rationality of bus parameter configuration according to the information receiving and transmitting condition in a simulation environment, and ensures the correctness of bus communication. The invention provides a time-triggered Ethernet bus simulation equivalent device which is used for equivalently replacing part of devices in a TTE network, simulating real devices to send/receive messages of other devices in the network, monitoring and recording data in a system network, simulating network faults and application message anomalies of a network node protocol layer and above, and realizing normal and abnormal coverage test of a system or an interface protocol. The main functions include: (1) AS6802 synchronization process simulation; TTE equivalent test module is to complete time synchronization process simulation based on PCF frame (2) Accurate time stamping; The TTE equivalent test module is used for finishing the function of stamping accurate time stamps on received data frames. (3) Flow generation; The method comprises the following steps of supporting the following traffic types of PCF frames, TT frames, RC frames, BE frames, supporting traffic priorities, TT > PCF > RC > BE, supporting TT, RC and BE traffic unicast and multicast, PCF message fixing 64 bytes, TT and RC traffic message length ranges of 64-1518 bytes, BE traffic message supporting 64-1518 bytes, and user data areas of TT, RC and BE messages supporting automatic generation and application software setting modes, wherein the automatic generation mode comprises four modes of fixing, increasing, random and mixing, and the application software setting mode comprises the steps of enabling an upper computer software to write the complete frame to BE transmitted into a module to transmit and buffer. (4) Loading network configuration; The flow generator supports network configuration update loading, including configuration and query. The TTE equivalent test module provides interface functions to configure module working parameters one by one according to module configuration register addresses, and test software of the module provides configuration file reading and configuration register checking and editing functions to realize graphic module working mode setting. (5) Capturing flow; The traffic generator supports frame capture based on filtering templates and frame capture based on error messages. At the same time, the functions of data frame acquisition, filtering, statistics and counting are also required to be supported (6) Fault injection; The fault type comprises that the injectable fault mainly comprises CRC error of BE frame, frame loss, PRP frame transmission redundancy control, LDSP and frame length inconsistency, channel number inconsistency, frame sequence number inconsistency, CRC error, TT/RC frame transmission redundancy control, frame sequence number inconsistency, CRC error, VL time window error, VL Bubbling error and the like. (7) Test software The test software supports the sending configuration of TT, RC, BE and PCF, supports the transfer of received data into PCAP file, and supports the setting and display of the received data. The beneficial effects of the invention are as follows: 1. The invention aims at adaptively expanding and improving the existing Ethernet test technology, and realizes the function test of time synchronization and time triggering communication specified in the time triggering part, namely SAEAS6802 standard; 2. The invention can detect all functions and parameters of the system network in all directions strictly according to the standard and technical requirements, can record physical layer data, analyze and carry out large-capacity recording processing, can