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Transmit ultrasonic wave to the sensors, boost input signal, and detect wave.
Waveform will be found, oscillating for a certain period of time.
1. Waveform for a normal sensor connection
2. Waveform for a failed sensor connection
Sensor connection will be checked for oscillating period of input signal 3V. If oscillating period is more than
0.8ms, it is normal.
a. Left sensor failure : beep-beep-beep
b. Right sensor failure : beep beep-beep beep-beep beep
c. Rear-right sensor failure : beep beep beep-beep beep beep-beep beep beep
d. Right side sensor failure : beep beep beep beep-beep beep beep beep-beep beep beep beep
WARNING
1. Range detected by back sensors is limited.
Watch back before reversing
2. There is a blind spot below the bumper. Low objects (for example boundary barrier) may be detected from minimum
1.5m away unable to detect at nearer.
3. Besides there are some materials unable to be detected even in detection range as follows.
(1) Needles, ropes, rods, or other thin objects.
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