РОЗРОБКА ІНТЕРФЕЙСНОГО МОДУЛЯ ДЛЯ ПРОГРАМНО-АПАРАТНОГО КОМПЛЕКСУ АВТОМАТИЧНОЇ КЛАСИФІКАЦІЇ ТЕКСТІВ

Abstract

The amount of information presented in text form is constantly increasing. A feature of a large amount of such information in most cases is the lack of its structuredness, which complicates the analysis process. At the stage of document processing in the information and analytical system, an automatic classifier is used – as a program, or as a software and hardware complex that accelerates automatic text processing. In this paper, a software and hardware complex is considered, in which the software part functions on the user's computer, and the hardware part is implemented on the FPGA. Thus, the problem of organizing the connection between its two parts is urgent. While FPGAs have high internal parallelism and very high internal bandwidth, the low bandwidth of the interface between the accelerator and the rest of the system, as well as restrictions on the conditions of its use, is a bottleneck in the field of data transfer. This problem is aggravated in the conditions of the need to create a network system for constructing a classifier, where several user computers connected to the network need access to the hardware-implemented part of the complex (accelerator). The aim of this work is to develop an internal interface module with network communication, in accordance with the technical and functional requirements of the software and hardware complex for automatic text classification. Considering the need to provide network access to the accelerator, as a result of the analysis, the Fast Ethernet interface was chosen as the base one. This interface is the most common LAN standard used by most businesses. For the development of the printed circuit board of the interface module, a comprehensive computer-aided design system Altium Designer was used. After the development of the electrical schematic diagram of the project, a simulation of the controller part was created in the Proteus digital-to-analog simulation program. For the convenience of testing the developed interface module, the Arduino UNO module and the SPI serial interface were used. A feature of the developed module is the support of network-level protocols, it makes it possible to organize access from any personal computer of the local network to an expansion board built on the basis of FPGA. The developed printed circuit board of the interface module was analyzed for possible defects and a list of recommendations for the operating conditions of the device was developed. The interface board is designed taking into account the balanced ratio of price-performance criteria, and is intended for use in any institution where there is a need for automatic classification of text documents.