摘要
本文详细分析了在辐照装置控制系统中线路设计的逻辑关系,尤其作为最有效控制安全联锁系统时,在保证多重性,冗余性,独立性的原则的基础上,要选择正确的逻辑关系电路是至关重要的,虽然正向逻辑开关量(即开关从断开的状态到闭合状态也称正向逻辑关系)也能使PLC可编程控制器达到控制安全联锁的目的,但在控制线路中最理想的是将可能出现故障因素较多的逻辑关系作为安全线路设计优先权,因此逆向开关量(即开关从闭合状态到断开的状态也称逆向逻辑关系)做PLC可编程控制器的安全联锁控制信号,即使有某一道安全联锁上的某一个可疑点出现异常也会使整套装置的安全联锁动作,达到不能升源或使源降至安全贮源位的目的,真正起到安全联锁的作用。
In this paper a detailed analysis of control systems in irradiation devices in the logic circuit design,particularly as the most effective control of safety interlock systems,in ensuring the multiplicity of redundancy,the independence of the basis of the principle,it is necessary to choose the correct logical relationship between the circuit is critical,although the positive logic switch(ie switch from the disconnected state to the closed state,also known as being the logical relationship) also enable the PLC programmable controller to control the purpose of safety interlock However,in the control lines are the best factors to problems which may occur as a more logical relationship between the safety circuit design priority,so reverse switch(ie switch from the closed state to the disconnected state,also known as reverse the logic of relations) to do PLC programmable controller to control the safety interlock signal,even if there is a safety interlock on the Road to a point of abnormal suspicious package will also safety interlock action,or should not reach the source or the source of reduced security source storage The purpose spaces,and truly play the role of the safety interlock.
出处
《电子测量与仪器学报》
CSCD
2009年第S1期305-308,共4页
Journal of Electronic Measurement and Instrumentation
关键词
辐照装置
开关量
逆向
安全联锁
可疑点
可编程控制器
Irradiation devices
Switch capacity
Reverse
Safety interlock
Suspicious points
Programmable Controller.
