VEHICLE-MOUNTED ELECTRONIC SYSTEM
First Claim
1. A vehicle-mounted electronic system comprising,a plurality of sensors in which at least two sensors continue to operate after an ignition is turned off;
- anda plurality of ECUs, wherein;
a power supply wire and a signal wire of the at least two sensors are connected to at least one ECU of the plurality of ECUs;
a number of the at least one ECU is less than a number of ECU of the plurality of ECUs that is operated when the ignition is turned on; and
the at least one ECU functions as a standby ECU when the ignition is turned off.
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Accused Products
Abstract
A vehicle-mounted electronic system includes: a standby ECU that performs standby operation when ignition is turned off; a plurality of non-standby ECUs that are inactive when the ignition is turned off; a sensor electric wire that is disposed between the plurality of sensors and the standby ECU to supply power from the standby ECU to the plurality of sensors; a sensor signal wire that carries a signal from the plurality of sensors to the standby ECU; and an ECU signal wire that is disposed between the non-standby ECU and the standby ECU to carry a wakeup request signal from the standby ECU to the non-standby ECU, in which the standby ECU, in response to signal input from the sensor, transmits the wake up request signal through the ECU signal wire to the non-standby ECU that corresponds to the signal from the sensor.
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Citations
12 Claims
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1. A vehicle-mounted electronic system comprising,
a plurality of sensors in which at least two sensors continue to operate after an ignition is turned off; - and
a plurality of ECUs, wherein; a power supply wire and a signal wire of the at least two sensors are connected to at least one ECU of the plurality of ECUs; a number of the at least one ECU is less than a number of ECU of the plurality of ECUs that is operated when the ignition is turned on; and the at least one ECU functions as a standby ECU when the ignition is turned off. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle-mounted electronic system comprising:
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a standby ECU that enters a standby mode when ignition is turned off; a plurality of non-standby ECUs that are respectively connected to a plurality of sensors that are operated when the ignition is turned off, wherein the non-standby ECU is in a sleep state or an off state when the ignition is turned off; a sensor electric wire that connects the plurality of sensors to the standby ECU and through which power is supplied from the standby ECU to the plurality of sensors; a sensor signal wire that carries a signal from the plurality of sensors to the standby ECU; and an ECU signal wire that connects the plurality of non-standby ECU to the standby ECU, wherein the ECU signal wire carries a wakeup request signal from the plurality of standby ECU to the non-standby ECU, wherein the standby ECU, in response to signal input from the sensor, transmits the wakeup request signal through the ECU signal wire to the non-standby ECU based on the signal from the sensor. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification