Power system
AssigneesSubaru Corporation, Toyota Jidosha Kabushiki Kaisha, Nissan Motor Co., Ltd., Honda Motor Co., Ltd., Mitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsTakahiro Kinoshita, Ryo Shirasawa
Life of this patent
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Abstract
A power system includes a central unit, a zone unit capable of communicating with the central unit, and a downstream unit. The zone unit includes a semiconductor switch capable of electrically connecting the downstream unit to a power supply, and a zone power supply driver capable of waking up the zone unit in response to reception of an unique identifier transmitted from the central unit. The downstream unit is woken up when the semiconductor switch of the zone unit enters an ON state.
Claims8
A power system comprising:
- a plurality of electronic control units mounted on a vehicle, the plurality of electronic control units includes:
- a central unit configured to collectively control the plurality of electronic control units;
- a plurality of zone units coupled to the central unit;
- and
- a plurality of downstream units, one or more of the downstream units being coupled to each of the zone units,
- wherein the central unit is configured to transmit a unique identifier for identifying a target zone unit;
- wherein each zone unit comprises:
- a zone power supply driver configured to wake up the corresponding zone unit in response to reception of the unique identifier transmitted from the central unit;
- and
- a semiconductor switch configured to selectively connect the one or more downstream units to a power supply,
- wherein each downstream unit is configured to wake up in response to receiving electric power from the power supply from through the semiconductor switch without receiving any external wake-up control signal, and
- wherein, after a zone unit that receives the unique identifier is woken up,
- the central unit is configured to transmit a downstream-ON command to the woken-up zone unit,
- the woken-up zone unit is configured to turn on the semiconductor switch in response to reception of the downstream-ON command, and
- one or more downstream unit coupled to the woken-up zone unit wakes up in response to receiving electric power from the power supply from through the semiconductor switch.
Dependencies are inferred from the claim text.