摘要
流程安全系统也遵循分布式控制系统的相同路径:新系统常常是先分布;然后通过三重化安全控制器和本地I/O构成集中式系统;现在是由SIL等级的安全控制器和网络连接安全等级的智能I/O、智能仪表构成分布式系统。
Process safety systems are following much the same path of DCS system: first distributed, or often nonexistent systems; then centralized via triple-modular-redundant safety controllers and local I/O; and now distributed via SIL-rated safety networks connected to safety-rated intelligent I/O, and via ever smarter and often redundant instruments and controllers.
出处
《仪器仪表标准化与计量》
2013年第3期12-14,共3页
Instrument Standardization & Metrology
