Denso Corporation

Ryoichi Ijima

Nobuya Watabe

Masashi Mori

Takatoshi Sekizawa

Yoshihiko Sugawara

Satoshi Kouchiyama

Daisuke Nomura

Eiji Sobue

Nobuhiro Ogura

A tire pressure detection apparatus includes: a transmitter at each of a plurality of wheels with a tire; and a receiver at a vehicle body. The transmitter has: a sensing device having a pressure sensor outputting a detection signal related to a tire pressure of each of the plurality of wheels and an acceleration sensor detecting an acceleration including a centrifugal acceleration caused by rotation of the wheel and a gravitational acceleration; a first controller performing signal processing on the detection signal of the pressure sensor and creating a frame storing data related to the tire pressure; and a radio wave transmitter transmitting the frame. The receiver has: a radio wave receiver receiving the frame; and a second controller detecting a tire pressure based on the data related to the tire pressure stored in the received frame.

Tire pressure detection apparatus

A tire air pressure detection device has transmitters each detecting a running state of a vehicle on the basis of a detection signal of an acceleration sensor and transmitting a frame when it is determined that the vehicle is running. Because acceleration varies independently of a tire rotation speed, a frame can be transmitted even before a vehicle speed reaches or exceeds, for example, 30 km/h. Consequently, data on a tire air pressure can be transmitted in a short time period from a running start of the vehicle and hence a decrease in tire air pressure can be detected in a short time period from the running start of the vehicle.

Tire air pressure detection device

A notification apparatus for notifying a passenger in a vehicle of existence of a specific object disposed on a road includes: an information obtaining device that obtains positional information indicative of a position of each specific object and angle information indicative of a direction of each specific object; a candidate retrieving device that: sets an inclusive region including a driving schedule route; and retrieves one specific object in the inclusive region as a notification object candidate; a first eliminating device that eliminates the one specific object from the notification object candidate when the one specific object does not correspond to a driving direction; and a second eliminating device that eliminates the one specific object from the notification object candidate when the one specific object is not disposed on the driving schedule route.

Notification apparatus for vehicle

A charge controller for charging a battery of a plug-in vehicle with a plurality of electric power sources includes: a driving route estimation element; an estimated electric power consumption amount calculator; a weather information obtaining element; a sunshine information obtaining element; a solar photovoltaic generation electric power amount calculator; an electric power shortage amount calculator for calculating an electric power shortage amount when the solar photovoltaic generation electric power amount is smaller than an estimated electric power consumption amount; a charge schedule preparation element for preparing a charge schedule, which represents a first charge time for charging the battery with a solar photovoltaic generation system and a second charge time for charging the battery by the electric power shortage amount with another electric power source; and a charge control element for controlling to charge the battery according to the charge schedule.

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Kariya, Japan

Ryoichi Ijima