TOYOTA PARKING ASSIST-SENSOR SYSTEM


  1. CONSTRUCTION


    1. When the ultrasonic sensor transmits ultrasonic waves and receives the reflected waves from an obstacle, the buzzer sounds in stages in accordance with the distance to the obstacles.

      Figure 1. No. 1 Clearance Warning Buzzer (Front)

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      Figure 2. No. 2 Clearance Warning Buzzer (Rear)

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  2. OPERATION


    1. Depending on the detection distance and the detection area, the sound pattern of the No. 1 clearance warning buzzer will vary.

      Detection Area

      Detection Distance

      (mm (in.))

      		 Buzzer Sound Pattern

      On

      (msec.)

      Off

      (msec.)
      Front Corner Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0
      Front Center Longest 1000 +/- 100 to 600 +/- 60 (39.4 +/- 3.94 to 23.6 +/- 2.4) 200 500
      Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0
      Front Side Long 1000 +/- 150 to 700 +/- 150 (39.4 +/- 5.9 to 27.6 +/- 5.9) 200 200
      Middle 700 +/- 150 to 300 +/- 150 (27.6 +/- 5.9 to 11.8 +/- 5.9) 100 100
      Short 300 +/- 150 or less (11.8 +/- 5.9 or less) Continuous Sound 0

    2. Depending on the detection distance and the detection area, the sound pattern of the No. 2 clearance warning buzzer will vary.

      Detection Area

      Detection Distance

      (mm (in.))

      		 Buzzer Sound Pattern

      On

      (msec.)

      Off

      (msec.)
      Rear Corner Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0
      Rear Center Longest 1500 +/- 150 to 600 +/- 60 (59.1 +/- 5.9 to 23.6 +/- 2.4) 200 500
      Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 200 200
      Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 100 100
      Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0
      Rear Side Long 1000 +/- 150 to 700 +/- 150 (39.4 +/- 5.9 to 27.6 +/- 5.9) 200 200
      Middle 700 +/- 150 to 300 +/- 150 (27.6 +/- 5.9 to 11.8 +/- 5.9) 100 100
      Short 300 +/- 150 or less (11.8 +/- 5.9 or less) Continuous Sound 0

    3. When a sensor malfunction is detected or a sensor is frozen or dirty, the buzzer sounds 5 times according to the following timing:

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