Distributed control and monitoring system
First Claim
1. Distributed control or monitoring arrangement comprising:
- devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, andone or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for a CAN protocol,characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with both a state machine of a CAN control unit and a transceiver buffer, wherein each byte of the transceiver buffer is configured to be at least one of read and written by the CAN control unit and the microprocessor.
6 Assignments
0 Petitions
Accused Products
Abstract
In a more efficient distributed control or monitoring arrangement there are devices in control, monitoring and/or vehicle systems that comprise locally deployed module units that carry out one or more functions, and one or more links connecting the units. The respective module unit is connected to a link via a connection arrangement or a connection point and requisite communication device for the CAN protocol. A CAN control unit is arranged to receive indication of falling edges on the bus in question, and to carry out measurement of the time between falling edges using clock pulses in its clock function. Information from two or more such measurements forms the basis for calculation of a bit frequency currently used in communication on the bus by active module units connected to the same. The respective module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a function performing microprocessor that is arranged with or interworks with at least one memory area. The content in the memory of a first module unit is readable and/or writable via the link from a second module unit in the system without significant assistance from the function performing microprocessor in the first module unit.
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Citations
30 Claims
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1. Distributed control or monitoring arrangement comprising:
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devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, and one or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for a CAN protocol, characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with both a state machine of a CAN control unit and a transceiver buffer, wherein each byte of the transceiver buffer is configured to be at least one of read and written by the CAN control unit and the microprocessor. - View Dependent Claims (9, 10, 11, 12, 19, 21, 22, 23, 24, 25, 26, 27, 30)
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2. Distributed control or monitoring arrangement comprising:
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devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, and one or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for a CAN protocol, characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with a state machine of a CAN control unit, and characterized in that the CAN control unit (CAN Controller) is arranged to receive indication of falling edges on the link (bus) concerned, in that the CAN control unit is arranged to carry out measurement of the time at and/or between falling edges using clock pulses in its clock function, in that information from two or more such measurements forms the basis for calculation of a bit frequency currently used in communication on the link (bus) by active module units (nodes) connected to the link. - View Dependent Claims (3, 4, 5, 6, 7, 8, 18)
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13. Distributed control or monitoring arrangement comprising:
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devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, and one or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for a CAN protocol, characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with a state machine of a CAN control unit, characterized in that a message is arranged to initiate reading or writing when it appears on the link with a previously determined CAN identifier, and characterized in that the microprocessor in the module is arranged to initiate reading or writing by means of a command. - View Dependent Claims (14, 15, 16, 17)
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20. Distributed control or monitoring arrangement comprising:
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devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, and one or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for the a CAN protocol, characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with a state machine of a CAN control unit, characterized in that the CAN control unit can be set in a mode in which it transmits a dominant pulse upon command, and characterized in that the dominant pulse is one bit quantum in length.
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28. Distributed control or monitoring arrangement comprising:
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devices in or belonging to control, monitoring and/or vehicle systems that comprise separate or locally deployed (distributed) module units (nodes) that carry out one or more functions, and one or more links connecting the units, the respective module unit being connected to the link in question via a connection arrangement or a connection point or requisite communication device for a CAN protocol, characterized in that the connection arrangement or connection point for a first module unit comprises one or more communication devices that are free-standing or integrated in a microprocessor chip comprising at least a microprocessor (CPU) which is arranged to carry out instructions synchronously with and interworking with a state machine of a CAN control unit, characterized in that it comprises a clock unit that can be driven by an oscillator, in that a pre-scaler is arranged to adjust pulse trains outgoing from the clock unit/oscillator, in that the pre-scaler is arranged to generate an outgoing clock pulse after a number of pulses N from the oscillator, in that the outgoing pulse is arranged to be able to be adjusted to N+1 or N−
1, when a value in a phase adjustment register is reached resulting in adjustment of the clock unit and in that statistical errors present can be adjusted by a value in a register for statistical errors being added to a local time. - View Dependent Claims (29)
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Specification