| 摘要 |
<p>PURPOSE:To manage the parking time with a high precision without driver's complicated operation. CONSTITUTION:When detecting it by the switching states of switches S1 to S3 and the signal from a far infrared sensor S4 that each of vehicles V1 to Vn enters into the parking state, a signal processing circuit 1 of the vehicle transmits a start signal from a transmitter TR and starts counting of the parking time. The parking time is displayed on a display device 5. Meanwhile, a portable reporting machine 21 performs the counting operation in response to the start signal and informs the driver of the parking time at intervals of one minute after, for example, 5 minutes. Parking data of the frequency in parking, the parking time, etc., counted by the signal processing circuit 1 is transmitted to a base station B at intervals of, for example, one hour, and thus, the base station monitors parking data of vehicles V1 to Vn.</p> |
