Denso Corporation

Tatsuya Katou

Yasushi Kanda

Kazuhiro Nakashima

Noriaki Terashima

A vehicle condition monitoring system for an unattended vehicle includes an initial setting storage means, an actual state detection means, a comparison means, and a reporting means. The initial setting storage means memorizes a predetermined initial setting of a vehicle, that is, a window setting, a light setting, a door lock setting and the like. The actual state detection means detects an actual state of the vehicle. The comparison means compares the initial setting and the actual state of the vehicle. The reporting means issues a report that identifies the existence of a difference between the actual state of the vehicle and the initial setting based on a result of a comparison. A portable device receives the report through a wireless communication system.

Vehicle condition monitoring system

An electronic key entry system for vehicles has a security ECU mounted in a vehicle for checking an electronic key via radio communication with the same. The ECU includes a CPU and a PWM output unit. The PWM output unit generates an interrupt request at every edge time of PWM pulse transmitted to the electronic key. The CPU sets a pattern of PWM output of a next cycle in response to the interrupt request so that the PWM output unit transmits a pulse corresponding to the set PWM output pattern. The CPU also stops pulse transmission, when no response is received from the electronic key in the course of communication in a plurality of stages.

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Nagoya, Japan

Tatsuya Katou