通用串行总线作为一种崭新的微机总线接口规范，其特点使其非常适合高速数据采集系统。

As a new computer bus interface criterion, USB ap-plies to the high-speed data collecting system.

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OPC规范和IEC 61499标准在现场总线控制系统中均属于用户层协议，二者都基于组件技术。

OPC specifications and IEC 61499 standard both are protocols of User Layer of FieldBus Control System(FCS), and both are based on software component technology.

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其次依据PROFIBUS总线规范原理，设计了基于PROFIBUS总线的计算机联锁系统的硬件结构；

Secondly, according the standard of PROFIBUS fieldbus, the paper designed the hardware structure and the interface of the PROFIBUS of the computer interlock control system, which based on PROFIBUS.

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