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1. 发明申请

US20150137620A1 ANTI-INTERFERENCE SWITCH SIGNAL TRANSMISSION CIRCUIT 有权
标题翻译：抗干扰开关信号传输电路
公开(公告)号：US20150137620A1
公开(公告)日：2015-05-21
申请号：US14405449
申请日：2013-08-23
申请人： Beijing Sifang Automation Co., Ltd.
发明人： Gang Xu , Tao Zhang , An Liu , Qiurong Chen , Wenhao Shi
IPC分类号： H01H47/00
CPC分类号： H01H47/00 , H01H47/001 , H01H47/002 , H01H71/04 , Y10T307/937
摘要： An anti-interference switch signal transmission circuit, in which a changeover contact is used at a signal terminal, wherein a normally closed contact is connected to DC−, a normally open contact is connected to DC+, and a common terminal is connected to a switch signal acquisition circuit. When no signal exists, DC− is connected to a positive input terminal of the switch signal acquisition circuit via the normally closed contact. Since a negative input terminal of the switch signal acquisition circuit is also connected to DC−, even if interference is caused, no false signal is generated. When a signal exists, the position of the changeover contact changes and DC+ is connected to DC− via the closed normally open contact through the switch signal acquisition circuit thus a loop is formed, so that the signal can be reflected. The interference problem is solved by connecting both the two terminals of the acquisition circuit to DC− when no signal exists.
摘要翻译：一种抗干扰开关信号传输电路，其中在信号端子处使用转换触点，其中常闭触点连接到DC-，常开触点连接到DC +，并且公共端子连接到开关信号采集电路。当没有信号时，DC-通过常闭触点连接到开关信号采集电路的正输入端。由于开关信号采集电路的负输入端子也连接到DC-，即使产生干扰，也不会产生假信号。当存在信号时，转换触点的位置变化，并且DC +通过开关信号采集电路通过闭合常开触点连接到DC-，从而形成环路，从而可以反射信号。当没有信号存在时，通过将采集电路的两个端子连接到DC-来解决干扰问题。

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