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公开(公告)号:US07287184B2
公开(公告)日:2007-10-23
申请号:US10663863
申请日:2003-09-16
申请人: Anthony Gerard Gibart , Paul G. Kucharski , Joseph Paul Izzo , Michael Dean Kalan , Charles Martin Rischar
发明人: Anthony Gerard Gibart , Paul G. Kucharski , Joseph Paul Izzo , Michael Dean Kalan , Charles Martin Rischar
IPC分类号: G06F11/00
CPC分类号: G06F11/1683 , G05B9/03 , G05B2219/24187 , G05B2219/24195 , G06F11/1633
摘要: A safety controller executes a control program in two processing units to detect processor failure by comparison of the execution in each unit. This comparison is made rapid by synchronizing the input variables at the beginning of the task and comparing output variables at a conclusion of the task, avoiding line-by-line comparison of input and output variables. Intermediate variables, that are neither input nor output values, are compared at a less frequent interval.
摘要翻译: 安全控制器在两个处理单元中执行控制程序,以通过比较每个单元中的执行来检测处理器故障。 通过在任务开始时同步输入变量并在任务结束时比较输出变量,避免输入和输出变量的逐行比较,从而快速进行比较。 既不是输入值也不是输出值的中间变量以不太频繁的间隔进行比较。
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公开(公告)号:US07328370B2
公开(公告)日:2008-02-05
申请号:US10663864
申请日:2003-09-16
申请人: Anthony Gerard Gibart , Paul G. Kucharski , Joseph Paul Izzo , Raymond Louis Buvel , Michael Dean Kalan , Charles Martin Rischar
发明人: Anthony Gerard Gibart , Paul G. Kucharski , Joseph Paul Izzo , Raymond Louis Buvel , Michael Dean Kalan , Charles Martin Rischar
IPC分类号: G06F11/00
CPC分类号: G05B9/03 , G05B19/0426 , G05B19/0428 , G05B2219/23294 , G05B2219/23295 , G05B2219/24186 , G05B2219/24187
摘要: A safety controller with redundant controllers, each executing safety tasks and comparing their results, provides an improved interface in which a user interacts with a single processor and the second processor is invisible. The interacting processor provides for the transmission of programs and variables to both processors when they are safety tasks and coordinates synchronization of the two programs and comparison of their operation all without additional user input.
摘要翻译: 具有冗余控制器的安全控制器,每个执行安全任务并对其结果进行比较,提供了改进的接口,其中用户与单个处理器交互并且第二处理器不可见。 当它们是安全任务并且协调两个程序的同步并且其操作的比较而没有额外的用户输入时,交互处理器提供将程序和变量传送到两个处理器。
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公开(公告)号:US07027880B2
公开(公告)日:2006-04-11
申请号:US10675477
申请日:2003-09-30
申请人: Joseph Paul Izzo , Norman Sievert Shelvik , Michael Dean Kalan , Charles Martin Rischar , Raymond Louis Buvel
发明人: Joseph Paul Izzo , Norman Sievert Shelvik , Michael Dean Kalan , Charles Martin Rischar , Raymond Louis Buvel
IPC分类号: G05B11/01
CPC分类号: G05B19/0428 , G05B2219/23464 , G06F11/1438 , G06F11/1629
摘要: Re-certification of a control program loaded in a safety controller is avoided through the use of a digital snapshot and digital signature, the snapshot providing a rapidly loadable memory image file and the signature providing a confirmation that the file loaded matches a previously certified copy so as to avoid the need for time consuming re-certification.
摘要翻译: 通过使用数字快照和数字签名来避免加载在安全控制器中的控制程序的重新认证,快照提供快速可加载的存储器映像文件,并且签名提供所加载的文件与先前认证的副本的确认 以避免需要耗时的重新认证。
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公开(公告)号:US07228390B2
公开(公告)日:2007-06-05
申请号:US10661885
申请日:2003-09-12
CPC分类号: G05B19/0428 , G05B2219/24142 , G05B2219/24152 , G05B2219/24156
摘要: A safety controller provides for reliable mixed execution of standard and safety control programs held in a common memory by providing a hardware lock that is locked at times when the safety program is not executing to minimize potential corruption of the safety program by the standard program.
摘要翻译: 安全控制器通过提供在安全程序未执行的时候锁定的硬件锁来提供在公共存储器中保持的标准和安全控制程序的可靠的混合执行,以最小化标准程序对安全程序的潜在损坏。
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