| 摘要 |
<p>A vehicle electronic control unit, includes a power input port which receives electric power from a vehicle battery, sad a power output, port, which provides electric power to a vehicle electronic device including an antenna. The electronic device receives data transmissions from a vehicle sensor. The power output port provides substantially uninterrupted electric power from, the vehicle battery to the vehicle electronic device, A communication port is electrically connected to a vehicle communication bus, the communication port receives data transmissions from the vehicle electronic device via the communication port. An electronic component, electrically connected to the communication port, is initially In a first state when a vehicle ignition is off. One of the data transmissions from the vehicle electronic device received by the electronic component via the communication port switches the electronic component from the first state to a second state when the vehicle ignition is off The electronic component, while in the second state and while the vehicle ignition is off, receives additional data transmissions from the vehicle electronic device indicating statuses of respective vehicle sensors.</p> |
