| 发明名称 | User authentication system and plant control system having user authentication system | ||
| 摘要 | A plant control system may include a manipulation monitoring terminal that includes a local user authentication unit configured to authenticate a user who logs in the manipulation monitoring terminal and a domain controller that includes a domain user authentication unit and communicates with the manipulation monitoring terminal. The manipulation monitoring terminal may include a user authentication alarm unit configured to generate a security alarm when the local user authentication unit performs user authentication on the user in a state in which the domain controller is in normal operation. | ||
| 申请公布号 | US8756662(B2) | 申请公布日期 | 2014.06.17 |
| 申请号 | US201113280863 | 申请日期 | 2011.10.25 |
| 申请人 | Yokogawa Electric Corporation | 发明人 | Hino Yasutaka |
| 分类号 | G06F21/00 | 主分类号 | G06F21/00 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A plant control system comprising: a manipulation monitoring terminal that includes a local user authentication unit configured to authenticate a user who logs in the manipulation monitoring terminal; and a domain controller that includes a domain user authentication unit and configured to communicate with the manipulation monitoring terminal, wherein the manipulation monitoring terminal includes a user authentication alarm unit configured to generate a security alarm when the local user authentication unit performs user authentication on the user in a state in which the domain controller is available to communicate with the manipulation monitoring terminal, wherein the security alarm is reported to another manipulation monitoring terminal connected with the manipulation monitoring terminal through a control bus, and wherein the local user authentication unit is configured to perform user authentication on the user when the domain controller is unavailable to communicate with the manipulation monitoring terminal. | ||
| 地址 | Tokyo JP | ||