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1. 发明授权

US09830244B2 Safety system with test signal path through bus line and termination element 有权
公开(公告)号：US09830244B2
公开(公告)日：2017-11-28
申请号：US14044020
申请日：2013-10-02
申请人： SICK AG
发明人： Stephan Henneberger , Frederik Behre
IPC分类号： G06F11/34 , G05B9/02 , H04L12/437 , H04L12/40 , H04L12/26
CPC分类号： G06F11/3409 , G05B9/02 , H04L12/40176 , H04L12/40195 , H04L12/437 , H04L43/50
摘要： Multiple safety related participants are arranged along a bus line in such a way that both a forward test signal path and a return test signal path run through the same safety related participants and the safety related participants are adapted in such a way that the occurrence of a non-secure state of their protective device brings about an interruption of the test signal path. A termination element connects the forward test signal path to the return test signal path. The safety unit is configured to transmit an output signal at its output and the termination element is configured to receive the output signal from the forward test signal path and to output a test signal to the return test signal path. The test signal is changed with respect to the received output signal in dependence on the received output signal.

2. 发明授权

US10020149B2 Control apparatus for controlling a switching element 有权
公开(公告)号：US10020149B2
公开(公告)日：2018-07-10
申请号：US15248456
申请日：2016-08-26
申请人： SICK AG
发明人： Franz Dold , Jonas Weidenmuller , Stephan Henneberger , Frederik Behre
IPC分类号： H01H47/00 , H01H71/04
CPC分类号： H01H47/00 , H01H47/002 , H01H2071/044
摘要： To avoid additional costs, in particular by replacing a switching element too early or by expensive monitoring measures thereof, a control apparatus for controlling a switching element is provided. The control apparatus has an operating unit for setting a load stage at which the switching element can be operated, a control unit for calculating a first numerical value which reflects expected switching cycles of the switching element estimated on the basis of the set load stage and which corresponds to an expected service life of the switching element in dependence on the set load stage, and for determining a second numerical value which reflects effected switching cycles of the switching element. Information from a difference between the first and second numerical values or from a quotient from the second numerical value to the first numerical value during operation of the switching element is provided to a user.

3. 发明授权

US09461459B2 Safety system 有权
标题翻译：安全系统
公开(公告)号：US09461459B2
公开(公告)日：2016-10-04
申请号：US14048419
申请日：2013-10-08
申请人： SICK AG
发明人： Stephan Henneberger
IPC分类号： H02H3/10 , H02H3/18 , G05B9/02 , G05B23/02 , G01R31/02
CPC分类号： H02H3/18 , G01R31/025 , G05B9/02 , G05B23/0256 , H02H3/10
摘要： The invention relates to a safety system comprising a safety unit having an output and a safety input, a bus line and at least one safety related participant. The bus line and the safety related participant form a test signal path having a forward path and a return path. The safety related participant comprises an interconnection module with a test signal input and a test signal output and a protective device integrated in the test signal path by means of the interconnection module. The protective device comprises two switches which are respectively connected to the interconnection module via a forward line and a return line of the interconnection line for the formation of a first and a second electric switching path. The interconnection module comprises a test circuit for the two switching paths with a controlled current source, a controlled current sink and a current direction element.
摘要翻译：本发明涉及一种安全系统，其包括具有输出和安全输入的安全单元，总线线路和至少一个与安全相关的参与者。总线和安全相关参与者形成具有前进路径和返回路径的测试信号路径。安全相关参与者包括具有测试信号输入和测试信号输出的互连模块以及通过互连模块集成在测试信号路径中的保护装置。保护装置包括两个开关，它们分别经由互连线的前线和回线连接到互连模块，用于形成第一和第二电切换路径。互连模块包括用于具有受控电流源，受控电流吸收器和电流方向元件的两个开关路径的测试电路。

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