Controller area network synchronization
AssigneeHamilton Sundstrand Corporation
InventorsQiuming Leng, Julie Truong
Life of this patent
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Abstract
A computer-implemented method for synchronizing nodes on a controller area network includes identifying, via a processor, a node from a plurality of nodes as a sync master node; designating, via the processor, each of the remaining nodes as a sync slave node; designating, via the processor, the first message from the sync master node as a sync message; assigning, via the processor, the lowest number, among all the message IDs in the network system, to the message ID of the sync message; determining a sync message target receiving time on a sync slave node; and triggering an interrupt to the processor responsive to receiving the sync message on a sync slave node in the controller area network to perform time adjustment on the sync slave node.
Claims18
A computer-implemented method for synchronizing nodes on a controller area node network comprising:
- identifying, via a processor, a node from a plurality of nodes as a sync master node;
- designating, via the processor, each of the remaining nodes as a sync slave node;
- designating, via the processor, the first message from the sync master node as a sync message;
- assigning, via the processor, the lowest number, among all the message IDs in the network system, to the message ID of the sync message;
- determining a sync message target receiving time on a sync slave node;
- and
- triggering an interrupt to the processor responsive to receiving the sync message on a sync slave node in the controller area network to perform time adjustment on the sync slave node.
A system for synchronizing nodes on a controller area node network comprising a processor configured to:
- identify a node from a plurality of nodes as a sync master node;
- designate each of the remaining nodes as a sync slave node;
- designate the first message from the sync master node as a sync message;
- assign the lowest number, among all the message IDs in the network system, to the message ID of the sync message;
- determine a sync message target receiving time on a sync slave node;
- and
- trigger an interrupt to the processor responsive to receiving the sync message on a sync slave node in the controller area network to perform time adjustment on the sync slave node.
An aircraft having a system for synchronizing nodes on a controller area node network, the system comprising a processor configured to:
- identify a node from a plurality of nodes as a sync master node;
- designating, via the processor, each of the remaining nodes as a sync slave node;
- designate the first message from the sync master node as a sync message;
- assign the lowest number, among all the message IDs in the network system, to the message ID of the sync message;
- determine a the sync message target receiving time on a sync slave node;
- and
- trigger an interrupt to the processor responsive to receiving the sync message on the sync slave node in the controller area network to perform time adjustment on the sync slave node.
Dependencies are inferred from the claim text.