Rear Parking Assist System: Specifications Hyundai Veloster I

Specification

Scheme 1

* The IPM contains the rear parking assist system function.

* Buzzer is built in IPM.

System Operation Specification

1. INIT mode System initializing time is 500 ms after IGN1+ R Gear. RPAS recognizes ID and sets the sensor ID up during initialization. RPAS activates each sensor and then executes the diagnosis after finishing initialization of BCM "RPAS Starting buzzer" is normally worked, when sensor does not send an error message and after finishing error diagnosis. If any failure is received from the any sensors, "RPAS Starting Buzzer" does not work but the failure alarm is operated for a moment. If you have display option, warning sign is also shown on it. Buzzer for sensor failure is operated once, but display is shown continuously until it is repaired completely.
2. NORMAL Mode LIN communication starts and keeps the routine after IGN1 ON+R gear BCM send a message once to each sensor for operating request to check the initial status of the system and four sensors response at a time. At this time, if there is no problem, the alarm starts after 500ms of R gear shifting at 300ms intervals. After initialization, normal mode starts 100ms later after finishing alarm output. Alarm for obstacles is divided into 3 levels. The first and second are intermittent sound, and the third alarms continuously The efficient vehicle speed of RPAS operation is under 10 Km/h. Refer to 'Digital PAS Project LIN communication' for the more detailed communication specification.

Alarm Output Specification Classified By Distance Between Sensors

Condition logic according to priority of alarm level is as below. (the identical sensor)

Scheme 2

*α value definition

1. low priority sensor off: α = 0ms
2. low priority sensor is 1st warning level: α < 340 ms
3. low priority sensor is 2nd warning level: α < 170 ms

*β value definition

1. low priority sensor is 1st warning level: β = 1700 ms
2. low priority sensor is 2nd warning level: β = 1700 ms
3. low priority sensor is 3rd warning level: β = 700 ms

Alarm control by sensing distance is as below

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

1. First warning area (81cm ~ 120 cm)
2. Second warning area (41cm ~ 80cm)
3. Third warning area (less than 40cm)
4. Period of fault alarm With visible display Without visible display When the system has error channel in initial time, sensor channel notify the location of error via hearing device. (Three times for each sensor) NOTE: Time tolerance of the above waveform: Time ± 10% At nearer distance than 30cm, detection may not occur. Alarm will be generated with vehicle reversing speed of 10km/h or less. For moving target, maximum operation speed shall be target approach speed of 10km/h. When the vehicle or the target is moving, sequential alarm generation or effective alarm may be failed. False alarm, or failure of the alarm to trigger may occur in the following conditions. Irregular road surface, gravel road, reversing toward grass. Horn, motor cycle engine noise, large vehicle air brake, or other object generating ultrasonic wave is near. When a wireless transmitter is used near to the sensor. Dirt on the sensor. Sequential alarm may not occur due to the reversing speed or the target shape.