System Operation
Typically, lane departure warning is activated at a speed
over 70 km/h, but suppressed in case of unintentional lane departure
when driver do not operate turn signal.
System Operation Conditions
| 1. |
User Conditions
| (1) |
When unintended lane departure is occured, warnings are generated. |
| (2) |
When driver operates a turn signal for lane departure, no warnings are generated. |
|
| 2. |
Vehicle Conditions
| (1) |
When the accelerated velocity of vehicle exceeds certain speed, LDW system is activated. |
| (2) |
When a turn signal is not used. LDW system activates. |
|
| 3. |
Lane Conditions
| (1) |
lanes are visible and recognizable , LDWS can be on normal operation mode. |
| (2) |
Operate on all roads, including highways, country roads and
urban freeways at a speed of 70 km/h and from 2.7 to 5.0 meters of lane
width. |
| (3) |
Lane material: asphalt roads, concreat roads |
| (4) |
Lane color: White, Yellow, Blue, |
| (5) |
Temporary lane marker for repairing road |
| (6) |
lanes are visible and recognizable, LDWS can be on normal operation mode independent of season or time, |
| (7) |
Operate under partially visible lane markers such as and
regardless of inclement weather, including rain and wet roads, and time
limit |
| (8) |
Be performed in a curve of radius 250 meters |
|
Lane Departure Warning
This lane Departure Warning Algorithm is for HKMC whole vehicle that will apply to LDWS
| 1. |
Lane departure warning start speed: 60KPH
| (1) |
Warning Start Speed: 70 km/h |
| (2) |
Warning Stop Speed: 65 km/h |
To prevent repetation of system warning on and off according
to vehicle speed variation, This specification establish warning stop
speed as 65 km/h for hystheresis characteristic. |
| 2. |
Warning Method
| (1) |
Warning Device
Cluster, Buzzer, Haptic Devices( Vibration of Seat-belts) |
| (2) |
Cluster Display Symbols
Cluster display
| Description
| 
|
| - |
LDWS indicator is ON ON the cluster |
| 
|
| - |
Lane detected and warning system engaged |
| 
|
| - |
Lane not detected and warning system not engaged |
| 
|
| - |
Lane detected and right side deviation |
| 
|
| - |
Lane detected and left side deviation |
| 
|
| - |
Lane not detected and warning system not engaged |
|
x Display symbol and period vary according to vehicle's LCD and alarm. |
|
Lane Type
LDW System can recognize a full lane, a dotted lane, Bott’s Dot and yellow Retroreflective on a road.
In case of double lane, LDW System can recognize the lane on the inside. This is a standard about a dotted lane.
Recognition of double lane
In case of double lane, LDW System can recognize the lane on the inside.
Lane departure warning deactivation
| 1. |
Turn signal is actived
| A. |
Depart from lane after turn signal is activate
If vehicle departs from lane after turn signal is activated,
the departure warning of turn sigal direction is not activated. If
vehicle departs from opposite line of turn signal direction, Departure
warning is activated. Warning alarm is not activated while turn signal
is activated. If turn signal is deactivated during lane departure after
turn signal activates, system can issue warning after 2sec when it can
recognize lane.
If turn signal is deactivated after lane departure during turn signal activated, Warning signal can ge generated after 2 second. |
| B. |
Turn signal is activated after lane departure
Alarm is immediately deactivated when driver operates turn signal during lane departure.
Alarm can be activated again after 2 second when turn signal is deactivated. |
|
| 2. |
|
LDWS is capable of recognizing continuing lines as lanes and
has limited lane recognition capabilities when it comes to sharp-bending
roads.
In addition, the system may not function properly under the following circumstances:
| - |
No or faded lane markings (failed lane detection). |
| - |
Low visibility due to foul weather conditions. |
| - |
Low light or sudden change in exterior light conditions. |
| - |
Sharp bends of the road (curvature radius of less than 250m). |
| - |
Sidewalks and other dividing structures along the edge of the lane. |
| - |
Dirty windshield (low camera visibility). |
|
|
Camera Calibration
| 1. |
Necessity
Once installed to the vehicle, LDWS needs to be calibrated to achieve accurate lane marking recognition.
Specifically, the system needs to be calibrated to correct
any difference between the ideal road coordinates and the actual road
coordinates.
| A. |
When replacing the lane departure warning system unit. |
| B. |
When repairing the roof panel of chassis by vehicle crash. |
| C. |
When repairing the LDWS unit mounting bracket |
| D. |
The system need to be calibrated to corect any vehicle crash. |
|
| 2. |
Schedule
Calibrate after LDWS replacement and as necessary.
| A. |
Condition : There should be an error between ideal road coordinates and actual road coordinates after installing the LDWS unit. |
| B. |
Object : Calibrate an error in LDWS unit to improve coordinates accuracy. |
| C. |
Procedure : Operate the calibration procedure using the GDS and calibration target jig. |
| D. |
Environment : Vehicle on an even surface and align the center of target jig to down the degree of scattering. |
| E. |
Calibration process : Refer to bellow "Calibration procedures" |
|
Calibration Procedures
| 1. |
Install the calibration target jig (09890-3N100) on the hood. 
|
| 2. |
Align the center of target jig with the end of emblem as shown in the ficture.
Tolerance : ± 0.197in (± 5mm)
|
|
| 3. |
Adjust the top of target jig to center a drop of air (A) in circle by bending the target board.
(To adjust the target vertically) 
|
Set the target jig with lowest height |
|
| 4. |
Connect GDS to the vehicle to calibrate LDWS unit. |
| 5. |
Select model and LDWS system. |
| 7. |
Operate calibration automaticdly |
| 8. |
Select "LDWS Reference Point Calibration" and complete calibration procedures.
Coordinates allowance ranges
X : 153 ~ 219
Y : 114 ~ 203
|
|
Components
1. LDWS ON/OFF Switch2. Instrument Cluster3. LDWS Unit4. Camera Module
...
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Hyundai Equus: Description and Operation
Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Body Electrical System / Lane Departure Warning System (LDWS) / Description and Operation
Components and Components Location
