FPGA-based LZSS bridge data compression parallel method, system, medium and equipment

Abstract

The invention discloses an FPGA-based LZSS bridge data compression parallel method and system, a medium and equipment. The method comprises the following steps: inputting an LZSS compression algorithm into a data acquisition subsystem and a monitoring center; the data acquisition subsystem reads N parts of sensor data; the N parts of sensor data are sent to N on-chip processing units for compression processing to obtain compressed data, then the compressed data are output to an off-chip DRAM through an on-chip cache region, and the off-chip DRAM is provided to transmit the compressed data to a monitoring center; the monitoring center reads the received N parts of compressed data to an off-chip DRAM of the FPGA, and the FPGA caches and reads the N parts of compressed data in the off-chip DRAM and sends the N parts of compressed data to N on-chip processing units for decompression processing to obtain N parts of decompressed data; and enabling the N parts of decompressed data to pass through an on-chip cache region, and then outputting the N parts of decompressed data to an off-chip DRAM until all the received compressed data are processed, thereby realizing data compression parallel. The problems of long data compression time consumption and low transmission efficiency are solved.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to an FPGA-based LZSS bridge data compression parallel method, system, medium and equipment. Background technique [0002] At present, many bridges built in the 1950s and 1960s are still in operation. Affected by the environment and the aging of the bridge itself, various safety hazards in these "old bridges" that have been in operation for more than half a century have gradually been exposed. For the normal operation of railway lines, it is very necessary to grasp the health status of bridges in time. [0003] In recent years, with the rapid development of computer technology, sensor technology and communication technology, people have gradually designed and continuously improved the bridge structure health monitoring system, such as figure 1 Shown is a schematic diagram of the current mainstream bridge structural health monitoring system. The system deploys vario...

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Problems solved by technology

[0004] Since the bridge monitoring system works 7*24 hours for a long time, the long-term operation of a large number of sensors will generate massive data, because the data acquisition subsystem is usually far away from the monitoring center, and many bridges are located in complex terrain, which cannot be reached by wired networks. Therefore, a large amount of data to be transmitted from the data collector at the bridge site to the data monitoring center needs to use a wireless network with a limited speed, which will take a lot of time, thereby reducing transmission efficiency, reducing throughput, and increasing transmission costs. Negative impact of bridge inspection system

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