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1. 发明申请

WO1993005456A1 LOCALIZING POWER FAULTS IN AN ELECTRONIC PRICING DISPLAY SYSTEM 审中-公开
标题翻译：在电子价格显示系统中定位电源故障
公开(公告)号：WO1993005456A1
公开(公告)日：1993-03-18
申请号：PCT/US1992007319
申请日：1992-08-28
申请人： ELECTRONIC RETAILING SYSTEMS INTERNATIONAL
发明人： ELECTRONIC RETAILING SYSTEMS INTERNATIONAL , BERLUTI, Vincent , POLAND, Terrell , WALDRON, Steven
IPC分类号： G05B23/02
CPC分类号： H04L12/40032 , G06F11/0763 , G06F11/0796 , H04L12/403
摘要： Methods and apparatus are dislocsed for localizing power faults occuring in an electronic pricing display system. A host communicates with electronic price displays (10) via serial data communications bus (11), with power limiting devices (5) located on the bus so that a first one of the elctronic price displays is powered through a first power limiting device and a second one of the power limiting devices is not powered through the first power limiting device. By sending messages to particular electronic price displays that are powered through the same power limiting device, it can be established whether the particular electronic price displays and their associated portions of the communications bus are functioning properly. By removing power to the portion of a communications bus powered through a particular power liminting device when the associated electronic price display draws excessive power, the power fault can be localized.
摘要翻译：方法和设备被错位用于定位电子定价显示系统中发生的电力故障。主机通过串行数据通信总线（11）与电子价格显示器（10）通信，功率限制装置（5）位于总线上，使得电子价格显示器中的第一个通过第一功率限制装置和第二功率限制装置不通过第一功率限制装置供电。通过向通过相同功率限制装置供电的特定电子价格显示器发送消息，可以确定特定电子价格显示器及其相关部分的通信总线是否正常工作。当相关联的电子价格显示消耗过多的功率时，通过去除通过特定功率限制装置供电的通信总线的部分的电力，可以对电力故障进行定位。

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