In-vehicle device
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorsYuta Taninaka, Masaya Ina, Kota Oda, Ryosuke Masuda
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Abstract
An in-vehicle device of the present invention includes a fuse and an upstream capacitor having one end connected to a connection node upstream of the fuse in a current path of current that flows through the fuse. One end of a downstream capacitor is connected to a connection node downstream of the fuse in the current path. A determiner determines whether or not the fuse is blown based on an upstream voltage that passed through the upstream capacitor and a downstream voltage that passed through the downstream capacitor.
Claims8
An in-vehicle device comprising:
- a fuse;
- an upstream capacitor having one end connected to a connection node located upstream of the fuse in a current path of current that flows through the fuse;
- a downstream capacitor having one end connected to a connection node located downstream of the fuse in the current path;
- an upstream reduction circuit configured to reduce a peak value of the upstream voltage;
- a downstream reduction circuit configured to reduce a peak value of the downstream voltage;
- and
- a determiner configured to determine whether or not the fuse is blown based on an upstream voltage that passed through the upstream capacitor and a downstream voltage that passed through the downstream capacitor, and wherein the determiner determines whether or not the fuse is blown based on the upstream voltage whose peak value was reduced by the upstream reduction circuit and the downstream voltage whose peak value was reduced by the downstream reduction circuit.
Dependencies are inferred from the claim text.