TTE network transmission delay test system and method

Abstract

The invention discloses a TTE network transmission delay test system. The system comprises a to-be-tested TTE network, test execution equipment and test management equipment; the test management equipment is used for responding to a user test operation and sending a time delay test instruction to the test execution equipment; and the test execution equipment is used for acquiring sending signal information and receiving signal information in the TTE network to be tested in response to the time delay test instruction, and determining the transmission time delay of the TTE network according to the sending signal information and the receiving signal information. Visibly, the transmission delay of the TTE network is analyzed in a mode of combining board card trigger acquisition and software data analysis in the test execution equipment, that is, time data acquisition and analysis are performed on the TTE network at a board card level, the risk of influencing the data in the TTE network at a protocol layer is reduced, and the use of third-party test equipment is avoided, therefore, the complexity of TTE network testing is reduced, and the risk that TTE network transmission information is tampered and the correctness of transmission data is affected is also reduced.

Description

technical field [0001] The present application relates to the field of avionics, in particular to a TTE network transmission delay testing system and method. Background technique [0002] Compared with Ethernet that uses event-triggered mechanism to transmit data, time-triggered Ethernet (Time-Triggered Ethernet, TTE) adds time-triggered and time-synchronized services on the basis of Ethernet technology, so that it can handle very demanding real-time requirements. High time-triggered services, capable of handling rate-limited services and ordinary Ethernet services at the same time, TTE because of its high bandwidth, real-time, deterministic and compatible with traditional Ethernet equipment, etc. The method of access / conflict detection solves conflicts, which leads to the inability to guarantee the real-time and certainty of data transmission in key application fields, so TTE has received increasing attention. [0003] The TTE network is mainly composed of a TTE end system...

AI Technical Summary

Problems solved by technology

[0004] However, the solution adopted in the existing technical solutions is to borrow a third-party test instrument to sample the time signal of the TTE network, or to calculate the time difference of the signal by capturing and analyzing the protocol frame. This existing method will increase the TTE network test. complexity, and also increases the risk of information being tampered and affecting the correctness of transmitted data when changing TTE network transmission

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