Single slice shipborne sailing data recording method and device based on SoC

Abstract

The invention relates to a method and a device for recording single-chip ship-borne voyage data based on SoC; the method comprises the following steps: the whole system is established on a programmable chip and adopts a modular design; a CPU module of the system, an audio-image collecting interface module, a digital signal operation processing module and a memory control module all adopt an IP core mode, use Verilog hardware to describe language implementation, then carry out the simulation of function and time sequence by a simulation testing tool on the basis of introducing testing vector and finally integrate into a whole so as to form a complete device for collecting and recording single-chip ship-borne voyage data. The device comprises a 32-bit embedded microprocessor CPU module, a peripheral interface module, an image-audio data compression processing module containing an interface controller, which are arranged on the programmable chip. As the invention adopts the technical proposal, the real time performance, reliability and reusability of the system are improved and the volume and the cost of the system are reduced.

Description

technical field [0001] The invention belongs to the field of navigation information, in particular to a SoC (programmable system on chip: System on Chip) single-chip shipboard navigation data recording method and device. Background technique [0002] At present, in order to realize the openness of software and hardware of the data recording device, the research on the open system generally focuses on making full use of the mature PC (personal computer) software and hardware platform. PC-based data devices have significant limitations in structure and performance: [0003] (1) There is no definition of an independent open structure suitable for shipboard voyage data recording [0004] Due to the use of a general-purpose computer platform, the openness possessed is the inherent openness of the computer itself, and is not defined for the characteristics of data collection required for shipboard navigation. The system environment does not take into account the data collection ...

AI Technical Summary

Problems solved by technology

[0004] Due to the use of a general-purpose computer platform, the openness possessed is the inherent openness of the computer itself, and is not defined for the characteristics of data collection required for shipboard navigation. In the system environment, there is no consideration for the data collection required by the ship, so it is not possible to build a data collection and processing platform fundamentally.

[0005] (2) The data recording system in PC mode cannot guarantee real-time and reliability well

[0006] Because the PC computer uses a general-purpose operating system during operation, it takes up a lot of system resources. Tasks that have nothing to do with data collection, processing and recording may take up more work shares of the system. They interfere with the system's timely collection of various data. Response, which reduces the processing speed of the system for a large amount of image and audio data collected, increases the workload of the PC, because the computer uses a general-purpose operating system during operation, it takes up a lot of system resources, and it is not related to data collection, processing and recording. The tasks may take up more work shares of the system, reduce the processing speed of the system for important data, and increase the operating overhead of the system, which will lead to system instability

[0007] (3) The cost of the CNC system in the industrial computer mode is too high

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