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A test system and method based on synchronous time division technology

A test system and technology, applied in the field of aerospace telemetry, can solve the problem that multiple test terminals cannot work in a network, and achieve the effect of real-time monitoring capability, unified timing, and unified management

Active Publication Date: 2017-07-25
广州中广国科测控技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The embodiment of the present invention provides a test system and method based on synchronous time division technology, aiming to solve the problem that the existing aerospace test system can only realize point-to-point synchronous transmission, and multiple test terminals cannot work in a network

Method used

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  • A test system and method based on synchronous time division technology
  • A test system and method based on synchronous time division technology
  • A test system and method based on synchronous time division technology

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Embodiment 1

[0023] figure 1 A specific structural block diagram of the test system based on the synchronous time-division technology provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown. In this embodiment, the test system based on synchronous time division technology includes several test terminals 1 and the main control terminal 2, and the asynchronous operation between the several test terminals 1 and the main control terminal 2 is carried out through the synchronous digital system network SDH. data transmission.

[0024] Wherein, the test terminal 1 includes:

[0025] The data acquisition unit 11 acquires asynchronous data through various asynchronous interfaces;

[0026] In this embodiment, the asynchronous interface includes Ethernet, FC bus, ARINC429, MIL-STD-1553, and video data interface. The asynchronous data includes Ethernet data packets and IEEE1588 data p...

Embodiment 2

[0040] image 3 It shows the implementation process of the test method based on the synchronous time division technology provided by the second embodiment of the present invention, with the test terminal as the execution subject, and the details are as follows:

[0041] It should be noted that the present invention is especially applicable to aerospace test systems, where it involves the transmission of asynchronous data generated by test terminals of various asynchronous interfaces.

[0042] In step S301, asynchronous data is obtained through various asynchronous interfaces.

[0043] In this embodiment, the asynchronous interface includes Ethernet, FC bus, ARINC429, MIL-STD-1553, and video data interface. The asynchronous data includes Ethernet data packets and IEEE1588 data packets.

[0044] In step S302, the asynchronous data is encapsulated into an SDH frame according to the GFP protocol, and the segment overhead of the STM-N frame of the SDH frame is extended with digit...

Embodiment 3

[0051] Figure 4 It shows the implementation process of the test method based on the synchronous time division technology provided by the third embodiment of the present invention, with the main control terminal as the execution subject, and the details are as follows:

[0052] It should be noted that the present invention is especially applicable to the aerospace test system, wherein the main control terminal obtains the asynchronous data generated by the test terminal.

[0053] In step S401, the SDH frame sent by the testing end is received.

[0054] In this embodiment, the main control terminal receives the SDH frame sent by the test terminal through SDH.

[0055] In step S402, the SDH frame is decomposed into digital communication channel bytes and IEEE1588 data packets according to the GFP protocol.

[0056] In this embodiment, specifically, the main control terminal decomposes the SDH frame into the STM-N frame according to the GFP protocol, and obtains the Ethernet da...

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Abstract

The present invention is applicable to the technical field of aerospace telemetry, and provides a test system and method based on synchronous time-division technology. The system is composed of several test terminals and a main control terminal. The asynchronous data transmission is carried out through the synchronous digital system network SDH, and the test terminal includes: a data acquisition unit for obtaining asynchronous data through various asynchronous interfaces; a data multiplexing unit for encapsulating the asynchronous data according to the GFP protocol It is an SDH frame, and the segment overhead of the SDH frame in the STM-N frame is extended with digital communication channel bytes and IEEE1588 data packets; a data sending unit is used to send the SDH frame to the main control end; the main control The terminal includes: a data receiving unit and a data decomposing unit, and the present invention realizes the networking work of multiple test terminals.

Description

technical field [0001] The invention belongs to the technical field of aerospace telemetry, in particular to a test system and method based on synchronous time division technology. Background technique [0002] At present, aerospace tests that need to obtain field data are carried out based on the IRIG-106 standard. Since the data transmission method between devices defined in this standard uses an asynchronous time-division protocol, it can only achieve point-to-point synchronous transmission, and the system cannot The use of equipment networking in the system determines that it is necessary to add a large number of auxiliary equipment and means to obtain the time correlation of data between various equipment in the system. At the same time, various equipment in the aerospace test system cannot achieve unified management, so this This standard is only applicable to stand-alone systems or a small number of master-slave architecture systems. Under this architecture, as the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 吕春匡长春
Owner 广州中广国科测控技术有限公司
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