초록 ▼

After a vehicle has entered a sleep mode, the disclosed method places the vehicle monitoring system into longer and longer nap periods provided the monitoring system does not receive a wake-up signal from one of a plurality of vehicle subsystems. During the nap periods, the monitoring system require

After a vehicle has entered a sleep mode, the disclosed method places the vehicle monitoring system into longer and longer nap periods provided the monitoring system does not receive a wake-up signal from one of a plurality of vehicle subsystems. During the nap periods, the monitoring system requires a reduced amount of operating power thereby decreasing the parasitic current drain on the battery during the sleep mode.

대표청구항 ▼

[What is claimed is:] [1.]1) placing the vehicle into a sleep mode wherein wake-up signals are not normally placed on the inputs by the plurality of vehicle subsystems;2) scanning the inputs through repetitive cycles for wake-up signals;3) timing said scanning through a predetermined time period; an

[What is claimed is:] [1.]1) placing the vehicle into a sleep mode wherein wake-up signals are not normally placed on the inputs by the plurality of vehicle subsystems;2) scanning the inputs through repetitive cycles for wake-up signals;3) timing said scanning through a predetermined time period; and4) increasing the time between cycles from scanning step to scanning step in response to a lack of wake-up signals on at least certain of the inputs in each predetermined time period for each prior scanning step.