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US 12,718,636 B2Granted
Method for communication between a vehicle diagnostic network and a powertrain controller
AssigneeHondata, Inc.
InventorDerek Stevens
Life of this patent
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Abstract
A method and system for avoiding conflicts across a vehicle diagnostics bus by incorporating a bridge device between the vehicle's data link connector and one or more sensors. The bridge device is capable of monitoring traffic across the vehicle's diagnostics bus, and conditions and transmits a sensor signal across the bus when said monitoring indicates that the transmission will not interfere or corrupt any other signals on said bus.
Claims5
A method for exchanging data between a plurality of scanning devices and an engine control unit of a vehicle that accesses data through a data link connector via a diagnostics bus, comprising:
- providing an ethanol sensor in a fuel line of a vehicle;
- placing a bridge device at the data link connector, the bridge device configured to receive data from multiple sensors including the ethanol sensor and another sensor;
- powering the ethanol sensor using a power control unit on the bridge device;
- obtaining an ethanol reading at the ethanol sensor and generating an ethanol signal;
- filtering the ethanol signal from the ethanol sensor into data packets that are separate from data received from said other sensor;
- monitoring traffic across the diagnostics bus via a Controller Area Network (CAN) bus interface module;
- identifying a window in said traffic that allows for an uninterrupted transmission of the data packets;
- transmitting said data packets to the engine control unit in said window without disconnecting or disrupting a flow of information to the engine control unit.
5 more elements
Dependencies are inferred from the claim text.