Truck network failure prediction system

A system for monitoring a controller area network (CAN) of a vehicle, the CAN having a high line and a low line that are connected to one another across two resistive element terminals, the CAN being connected to one or more nodes configured to send and/or receive communication over the CAN, the system comprising:

• an alternating current (AC) signal generator connected to the CAN and configured to superimpose an AC waveform over pulse signals communicated over the CAN;
• an electrical meter connected to the CAN and configured to detect an electrical characteristic of the CAN;
• a memory configured to store one or more prior measurements of the electrical characteristic by the electrical meter;
• and
• a controller connected to the AC signal generator, the electrical meter, and the memory, the controller being configured to:
• (a) receive a present measurement of the electrical characteristic of the CAN from the electrical meter based on the superimposed AC waveform,
• (b) determine, based on the present measurement and the one or more prior measurements, whether the electrical characteristic is approaching an edge of a predetermined operational range for the electrical characteristic, and
• (c) output a deterioration warning when the electrical characteristic is found to be approaching the edge of the predetermined operational range.

A method of monitoring a controller area network (CAN) of a vehicle, the CAN having a high line and a low line that are connected to one another across two resistive element terminals, the CAN being connected to one or more nodes configured to send and/or receive communication over the CAN, the method comprising:

• (a) receiving, by a controller from an electrical meter, a present measurement of an electrical characteristic of the CAN;
• (b) retrieving, by the controller from a memory, one or more prior measurements of the electrical characteristic;
• (c) determining, by the controller, based on the present measurement and the one or more prior measurements, whether the electrical characteristic is approaching an edge of a predetermined operational range for the electrical characteristic;
• and
• (d) outputting, by the controller, a deterioration warning when the electrical characteristic is found to be approaching the edge of the predetermined operational range.

A system for monitoring a controller area network (CAN) of a vehicle, the CAN having a high line and a low line that are connected to one another across two resistive element terminals, the CAN being connected to a plurality of nodes configured to send and/or receive communication over the CAN, the system comprising:

• a plurality of measurement modules, each of the measurement modules being associated with a different location of the vehicle and having an electrical meter connected across the CAN configured to detect an electrical characteristic of the CAN;
• and
• a controller connected to each of the plurality of measurement modules, the controller being configured to:
• (a) receive a present measurement of the electrical characteristic of the CAN from each of the measurement modules,
• (b) for each of the measurement modules, determine, based on the present measurement and one or more previously stored measurements from the respective measurement module, whether the electrical characteristic is approaching an edge of a predetermined operational range for the electrical characteristic, and
• (c) when the electrical characteristic is found to be approaching the edge of the predetermined operational range for one or more of the measurement modules, output a deterioration warning and a location of at least one of the one or more measurement modules.