Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
Patent
1983-10-24
1985-07-09
Caldwell, Sr., John W.
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in another vehicle
180169, 340 70, 340904, 340943, 367909, G08G 100
Patent
active
045285632
ABSTRACT:
A rearward obstruction sensing system for an automotive vehicle detects obstructions within plural warning areas defined near the vehicle body. Four speakers near the four corners of the passenger compartment face toward the allocated warning areas when seen from the driver. When an obstruction is detected within a warning area, the speaker disposed on the side of the warning area within which the detected obstruction exists produces an intermittent alarm sound. Therefore, the driver can intuitively or sensorially recognize the direction of an obstruction existing within dead angles from the driver without watching a zone display device while backing up his vehicle. Further, the driver can determine the obstruction distance by distinguishing the period of the intermittent alarm sound, because the period thereof is proportional to the obstruction distance.
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Caldwell Sr. John W.
Heim Michael F.
Nissan Motor Company Limited
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