2004•Yibiao jishu yu chuanganqiRequires access

Development of Virtual Instrument Based on USB

Teng Yan-feng

Abstract

Analyzes Universal Serial Bus's protocol and its keystone first,adopting 'Modularization'idea,the Virtual Instrument System's hiberarchy-designing scheme and pivotal implementing kernel based on USB are presented.Then develop successfully a USB interface module and a signal generating/collecting device based on USB.By dint of computer,the test system can provide Virtual Instrument's function of user interface oriented,bus interface oriented and data processing oriented.

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Available abstract

Key concepts: USB, eXtensible Host Controller Interface (xHCI), USB hub, Host controller interface, Interface (matter), PC Card, Virtual instrument, Embedded system