Method and system for changing data transfer bus

Abstract

The invention discloses a method for changing a data transfer bus, which comprises the following steps: receiving telemetry parallel data (sub)frame by (sub)frame, and converting the parallel data into serial data; carrying out the lossless compression on the serial data; transferring the compressed data to an upper computer via Ethernet; and demodulating, recording and storing various physical variables by the upper computer according to the data transfer protocol and the data telemetry protocol of the product. Accordingly, a tester can complete the remote setting of working conditions and the task of information query interaction by the upper computer. An information processing platform system has a structure of FPGA (field programmable gate array), DSP (digital signal processor) and ARM (advanced reduced instruction set computer machine), wherein the FPGA completes the task of converting the parallel data to the serial data; the DSP reads the data processed by the FPGA and completes the task of the lossless compression of the data; and the ARM reads the coded data from the DSP and achieves the real-time communication with the upper computer via the Ethernet. The invention not only solves the problem of signal distortion, but also meets the requirement for the real-time performance of information transfer; and meanwhile, the system serves the functions of the gateway and embedded Web, thereby guaranteeing the safe access of the system to the Ethernet.

Description

technical field [0001] The present invention relates to technical fields such as computer information processing technology, network communication technology, embedded system technology, microelectronics technology, etc., and particularly relates to a data transmission bus conversion method and system. Background technique [0002] When testing the flight control components, since the system under test has a certain distance from the host computer, if the telemetry parallel data is directly transmitted to the host computer, there will be data signal attenuation and signal delay problems, which may cause signal timing misalignment, and Cannot complete the task of system testing. Contents of the invention [0003] In order to solve the above problems, the present invention provides a data transmission bus conversion method and system, which can solve the attenuation and signal delay problems of the data signal caused by the long transmission distance, and complete the lossle...

AI Technical Summary

Problems solved by technology

[0002] When testing the flight control components, since the system under test has a certain distance from the host computer, if the telemetry parallel data is directly transmitted to the host computer, there will be data signal attenuation and signal delay problems, which may cause signal timing misalignment, and Cannot complete the task of system testing

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