Redundant control unit arrangement
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Abstract
The invention relates to an array of control devices having a plurality of control devices (1-3, 20-23) which are interconnected via a first data bus (4), in a means of transportation, control devices (1-3; 20-23) which are of redundant configuration with respect to a control function being provided, and in each case a data bus isolating switch (5) being assigned to the control devices (1-3; 20-23) which are of redundant configuration, said data bus isolating switch(s) connecting or disconnecting the data bus (4) as a function of an evaluation signal. In order to optimize the redundant array, each of these data bus isolating switches (5) is connected to a signal line of at least one further redundant control device (1-3; 20-23), a further redundant control device (2, 3; 21; 23) transmits an evaluation signal to the data bus isolating switch (5) which is assigned to a first redundant control device (1; 20; 22), the evaluation signal being the result of functional checking of the further redundant control device (2, 3; 21; 3) with respect to the first redundant control device (1; 20; 22). The data bus isolating switch (5) of the first redundant control device (1; 20; 22) disconnects the data bus (4) as a function of the result of a logic circuit, at least one input signal of the logic circuit being formed by the at least one evaluation signal.
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Citations
31 Claims
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1-11. -11. (canceled)
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12. An redundant configuration array comprising:
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a plurality of control devices interconnected via a first data bus for controlling a plurality of components of a transportation device, said control devices having redundant configuration with respect to a control function being provided, and a plurality of data bus isolating switches each assigned to one of said control devices which are of redundant configuration, each said data bus isolating switch connecting or disconnecting the first data bus as a function of at least one evaluation signal, and each of data bus isolating switches connected to a signal line of at least one further control device, wherein each of said at least one further control device transmits an evaluation signal to the data bus isolating switch which is assigned to another one of said at least one further control device, the evaluation signal being the result of functional checking of the at least one control device with respect to the another one control device, and the data bus isolating switch of the first redundant control device disconnects the first data bus as a function of the result of a logic circuit, at least one input signal of the logic circuit being formed by the at least one evaluation signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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21. A data bus isolating switch comprising:
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a switchable electrical connection for a data bus, wherein the data bus is connected to a data bus connection of the data bus isolating switch by a transceiver unit of a control device which is assigned to the transceiver unit;
at least one input port for the evaluation signal of at least one further control device; and
an output port which is connected to the voltage supply of the assigned control device via a signal line, wherein the connection can be switched via a logic circuit, with at least one evaluation signal forming an input signal of the logic circuit in order to disconnect the communication of the control device with the data bus and to transmit, via the signal line, a control signal which disconnects the control device from the voltage supply, as a function of the result of the logic circuit. - View Dependent Claims (22)
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Specification