Adaptive filters in vehicle power line communication
AssigneeGM Global Technology Operations LLC
InventorsShlomo Malka, Ayelet Aharon, Igal Kotzer
Life of this patent
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Abstract
A power line communication (PLC) system in a vehicle includes one or more networks with one or more sub-networks of nodes interconnected by power lines that deliver direct current (DC) to the nodes. Each of the nodes is a controller or a sensor. The PLC system also includes one or more adaptive filters. Each of the one or more adaptive filters is coupled to a port of one of the nodes and dynamically changes a frequency range within which communication from and to the port of the one of the nodes over the power lines is possible.
Claims20
A power line communication (PLC) system in a vehicle, the PLC system comprising:
- a hierarchical PLC architecture including multiple hierarchical levels having one or more networks on a first level partitioned into one or more sub-networks of nodes on second levels interconnected by power lines that deliver direct current (DC) to the nodes, wherein each of the nodes is a controller or a sensor;
- one or more adaptive filters, each of the one or more adaptive filters including a basic filter component and one or more bandpass filters, each of the one or more adaptive filters being coupled to a port of one of the nodes in the sub-networks of nodes on second levels and being configured to dynamically change a frequency range within which communication from and to the port of the one of the nodes over the power lines is enabled;
- and
- wherein at least one of the adaptive filters is configured to respond to a malfunction at the one of the nodes in the sub-network of nodes to which port the adaptive filter is connected by disabling each band pass filter within the adaptive filter connected to the port of the one of the nodes experiencing the malfunction.
A method of assembling a power line communication (PLC) system in a vehicle, the method comprising:
- arranging a hierarchical PLC architecture including multiple hierarchical levels comprising one or more networks on a first level partitioned into one or more sub-networks of nodes on second levels interconnected by power lines that deliver direct current (DC) to the nodes, wherein each of the nodes is a controller or a sensor;
- and
- arranging one or more adaptive filters, each of the one or more adaptive filters including a basic filter component and one or more bandpass filters, wherein the arranging includes coupling each of the one or more adaptive filters to a port of one of the nodes in the sub-networks of nodes on second levels and configuring each of the one or more adaptive filters to dynamically change a frequency range within which communication from and to the port of the one of the nodes over the power lines is enable;
- and
- wherein at least one of the adaptive filters is configured to respond to a malfunction at the one of the nodes in the sub-network of nodes to which port the adaptive filter is connected by disabling each band pass filter within the adaptive filter connected to the port of the one of the nodes experiencing the malfunction.
Dependencies are inferred from the claim text.