Sonar System Operation Description
- Around view monitor control unit transmits the sonar operation signal via CAN communication to sonar control unit to control the operation of sonar indicator and sonar buzzer.
- Sonar control unit transmits the detection signal and detection distance signal via CAN communication to around view monitor control unit. Around view monitor control unit operates the applicable sonar indicator.
- When receiving a sonar operation signal from the around view monitor control unit, the sonar control unit converts the signal into a detection distance signal and transmits it to the AV control unit via CAN communication. When receiving the detection signal, the AV control unit activates the speakers via the BOSE speaker amp.
- The sonar control unit is capable of self diagnosis. It can detect sensor malfunction or sensor harness open circuits. It transmits the diagnosis results to around view monitor control unit and always displays the sonar indicator in red to inform the vehicle operator.
OBSTACLE DETECTION DISTANCE:
- Sonar control unit changes the outputs of the sonar indicator and warning buzzer in 3 stages according to the obstacle detection distance from the corner sensor.
- The sonar control unit can change the setting of obstacle detection distance in 4 stages.
Obstacle detection image:
| A. | Approx. 50 cm (19.6 in) | B. | Approx. 15 cm (5.9 in) |
DETECTION DISTANCE
| Warning item | Sensitivity level 1 (Fastest warning) |
Sensitivity level 2 (Faster warning) |
Sensitivity level 3 (Default value) |
Sensitivity level 4 (Slower warning) |
|---|---|---|---|---|
| First stage warning | 70 - 80 cm (27.5 - 31.4 in) | 60 - 70 cm (23.6 - 27.5 in) | 50 - 60 cm (19.6 - 23.6 in) | 40 - 50 cm (15.7 - 19.6 in) |
| Second stage warning | 50 - 70 cm (19.6 - 27.5 in) | 40 - 60 cm (15.7 - 23.6 in) | 30 - 50 cm (11.8 - 19.6 in) | 30 - 40 cm (11.8 - 15.7 in) |
| Third stage warning | Less than 50 cm (19.6 in) | Less than 40 cm (15.7 in) | Less than 30 cm (11.8 in) | Less than 30 cm (11.8 in) |
SONAR INDICATOR DISPLAY:
- Around view monitor control unit that receives the detection signal and detection distance signal from sonar control unit displays the sonar indicator on display.
- Around view monitor control unit changes the color or blinking cycle of the indicator according to the detection distance.
Color and blinking cycle of sonar indicator
SONAR BUZZER OPERATION:
- Each sonar sensor transmits a sensor signal to the sonar control unit when detecting an obstacle.
- The sonar control unit converts a signal received from each sonar sensor into distance and transmits detection distance signal to the AV control unit via AV communication.
- The AV control unit transmits a buzzer signal to the BOSE amp. corresponding to each sonar sensor based on the received signal.
- When receiving a buzzer signal, the BOSE amp. transmits the buzzer signal to the each speaker. When each speaker receives a buzzer signal, a buzzer sounds.
- When the front corner sensor detects an obstacle, a buzzer is heard from the speakers on the front side.
- When the rear corner sensor detects an obstacle, a buzzer is heard from the speakers on the rear side.
- It changes the buzzer cycle in 3 stages according to the detection distance.
Sonar buzzer cycle