DSRC car-mounted equipment

Abstract

A DSRC car-mounted equipment which prevents, in advance, inconvenience caused by disorder in the antenna unit of the car-mounted equipment. A DSRC car-mounted equipment comprises a main body 1 of a car-mounted equipment having a control unit 10 and an antenna unit 12 for executing radio communication with an on-the-road equipment, information output means 13, 14 connected to the control unit, a checking unit 2 having a checking circuit unit 20 and a checking antenna unit 21 for executing radio communication with the antenna unit of the car-mounted equipment, and an antenna-judging means for judging the communication ability of the antenna unit of the car-mounted equipment based on the communication state of check signal waves D between the antenna unit 12 of the car-mounted equipment and the checking antenna unit 21, wherein the antenna-judging means produces an alarm signal when the communication ability of the antenna unit 12 of the car-mounted equipment is smaller than a predetermined value, and the control unit 10 of the car-mounted equipment drives the information output means 13, 14 in response to the alarm signal to produce an alarm.

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