Hyundai Santa Fe (TM): Parking Distance Warning (PDW)
Description and operation
Description |
• |
PDW consists of 8 sensors (front : 4 units, rear : 4 units) that are
used to detect obstacles and transmit the result in three separate warning
levels, the first, second and third to IBU via LIN communication.
|
• |
IBU decides the alarm level by the transmitted communication message
from the slave sensors, then operates the buzzer or transmits the data
for display.
|
Block Diagram
System Operation Specification
Initial mode |
1. |
System initializing time
|
2. |
PDW recognizes LID and sets the sensor ID up during initialization.
|
3. |
PDW activates each sensor and then executes the diagnosis after finishing
initialization of IPM(IBU).
|
4. |
PDW starting buzzer is normally worked, when sensor does not send an
error message and after finishing error diagnosis.
|
5. |
If any failure is received from the any sensors, PDW 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.
|
6. |
IBU memorizes the completed initializing status of sensor.
|
Normal mode |
1. |
PDW-F : Lin communication starts and keeps the routine after IGN1 ON+D
gear + below 10 km/h.
PDW-R : Lin communication starts and keeps the routine after IGN1 ON+R
gear
|
2. |
After initializing, the routine starts at once without PDW starting
warning sound.
|
3. |
Alarms of obstacle consists of 3 level 1,2,3 step and 1,2 alarm sounds
intermittently and 3 alarm sounds continuously. 1 level alarm doesn't
exist in the front ultrasonic sensor.
|
4. |
In display, the data of each sensor is sent from IBU to display, for
example cluster. CAN communication is used for transmission and maximum
gateway time is 50ms.
|
5. |
The efficient vehicle speed of PDW operation is under 10Km/h.
|
6. |
Operation doesn't start or stops at gear N, P.
|
Sensing Area
Level |
Distance range |
Allowed range |
1 |
Front : 61 - 100 cm (24.02 - 39.37 in.) / Rear : 61 - 120 cm (24.02 - 47.2
in.) |
± 15 cm (5.90 in.) |
2 |
31 - 60 cm (12.20 - 23.62 in.) |
± 15 cm (5.90 in.) |
3 |
0 - 30 cm (0 - 11.81 in) |
± 10 cm (3.94 in.) |
*Measurement condition : PVC pipe - Diameter 75 mm (0.0394 in.), length 1 m
(39.37 in.), at normal temperature
Display Alarm Indicator Specification
Components and components location
Component Location |
1. Integrated
Body Control Unit (IBU) |
2. Ultrasonic
Sensor |
※ PDW function is applied alone, it is integrated into IBU (Integrated Body
Control Unit).
※ PDW function is applied with RSPA function, it is integrated into ADAS_PRK
controller.
Specifications
Specifications |
[ADAS_PRK Application Specification (MOBIS)]
Item |
Specification |
|
Ultrasonic sensor |
Voltage rating |
DC 12V |
Detecting range |
40cm ~ 120cm |
|
Operating voltage |
DC 9V ~ 16V |
|
Operation current |
MAX. 350mA |
|
Storage temperature |
-30°C ~ +80°C |
|
Operation temperature |
-40°C ~ +85°C |
|
Operation frequency |
48 ± 5 KHz |
|
Number of sensors |
12 units |
[ADAS_PRK Application Specification (Valeo)]
Item |
Specification |
|
Ultrasonic sensor |
Voltage rating |
DC 12V |
Detecting range |
40cm ~ 120cm |
|
Operating voltage |
DC 9V ~ 16V |
|
Operation current |
MAX. 40mA |
|
Storage temperature |
-30°C ~ +80°C |
|
Operation temperature |
-40°C ~ +85°C |
|
Operation frequency |
51.2 KHz |
|
Number of sensors |
4 or 8 Units |
Ultrasonic Sensor. Schematic diagrams
Schematic Diagrams |
Ultrasonic Sensor. Repair procedures
Removal |
1. |
Disconnect the negative (-) battery terminal.
|
2. |
Remove the front/rear bumper.
(Refer to Body - "Front Bumper Cover")
(Refer to Body - "Rear Bumper Cover")
|
3. |
Disconnect the connector from the parking distance warning sensor.
|
4. |
Pull out the sensor (A) by opening the sensor holder out.
|
Installation |
1. |
Install the Parking distance warning sensor after connecting the connector.
|
2. |
Install the front/rear bumper cover.
|
3. |
Connect the negative (-) battery terminal.
|
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