Hyundai i-30: Front Radar System / Description and operation
| Description and operation |
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The System may be limited when
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The radar sensor or camera is blocked with a foreign object
or debris.
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The camera lens is contaminated due to tinted filmed or coated
windshield, damaged glass, or stuck of foreign matter (sticker,
bug, etc.) on the glass.
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Inclement weather such as heavy rain or snow obscures the field
of view of the radar sensor or camera.
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The target in front is too small to be detected.
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The vehicle in front is an oversize vehicle or trailer that
is too big to be detected by the camera recognition system (for
example a tractor trailer, etc.).
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The camera's field of view is not well illuminated (either too
dark or too much reflection or too much backlight that obscures
the field of view)
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The vehicle in front does not have their rear lights ON or their
rear lights are located in an unusual location (modified).
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The windshield glass is fogged up and the clear view of the
road has been obstructed.
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The camera or radar is damaged.
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System Flow
| A Type (Front rader none apply) |
| B Type (Front rader apply) |
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Rader, Camera : Detection device (radar and camera) that can
recognize potential obstacles in the front.
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Cluster : Human-Machine Interface (HMI) to warn driver or change
settings.
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ESC : Braking system to automatically brake the car
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Sensors : FCA, contrary to FCA (Smart Cruise Control), has to
work on a stationary car so the system uses the Fusion Target
system to combine radar with camera.
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System description
The smart cruise control system allows a driver to program the vehicle to control
the speed and following distance detecting the vehicle ahead without depressing
the brake pedal and the accelerator pedal.
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1. |
FCA : Forward Collision-avoidance Assist
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(1) |
FCA system is designed to help avoid a potential collision or
reduce its impact when drivers applies inadequate, delayed or
no brakes at all to avoid a collision.
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(2) |
The system detects the risk factors on the road by using the
frontal impact sensor and warn the driver and activate the emergency
brake to prevent collision or reduce collision speed.
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2. |
SCC : Smart Cruise Control
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(1) |
Cruise speed control : The vehicle maintains the selected speed
if there are not vehicles ahead.
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(2) |
Retardation control : The vehicle decelerates if a vehicle ahead
is detected.
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(3) |
Following distance control : The vehicle maintains the selected
following distance.
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(4) |
Acceleration control : The vehicle accelerates to the selected
speed if a vehicle ahead is not detected.
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System function
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1. |
Control on curves
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(1) |
The sensor may not detect a vehicle ahead or may detect a vehicle
on other lanes because the detection range of the sensor is
limited.
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(2) |
On curves, if the vehicle equipped the SCC is driving at high
speed, the vehicle can slip outside. Therefore reduce the speed
on curves even there is not a vehicle ahead. (There is no brake
control by SCC.)
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(3) |
While the vehicle follows a vehicle ahead on straight road,
if the vehicle ahead enters on curve, the vehicle equipped the
SCC may accelerate to follow the vehicle ahead.
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(4) |
On curves, if a vehicle ahead followed is out of range, the
vehicle does not accelerate to the set speed and maintain the
following speed to prevent from accelerating and decelerating
repeatedly. (If the vehicle equipped the SCC changes the lane
or apply the accelerator pedal, the vehicle will accelerate.)
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2. |
Warning alarm
If the vehicle equipped the SCC decelerates because a vehicle ahead
decelerates or moves into your lane, the warning will operate.
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(1) |
In case that the vehicle equipped with SCC is able to decelerate
properly by the system – No warning
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(2) |
In case that the vehicle equipped with SCC is not able to decelerate
properly by the system
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– |
Indicator in the cluster will blink and the warning
buzzer will sound. (The warning and deceleration by
the system will go on until the brake pedal is applied.)
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(3) |
If the vehicle ahead (vehicle speed: less than 30km/h) disappears
to the next lane during following distance control, the warning
chime will sound and a message will appear. Adjust your vehicle
speed for vehicles or objects that can suddenly appear in front
of you.
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3. |
Accelerating by driver
Even the vehicle is being decelerated by the SCC system, the vehicle
can be accelerated by applying the accelerator pedal. If the vehicle
is accelerated above the set speed, the indicator in the cluster will
blink.
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4. |
Function of cruise control
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(1) |
The driver may choose to only use the cruise control mode (speed
control function) by doing as follows:
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(2) |
With the smart cruise control system on (the cruise indicator
light will be on but the system will not be activated), push
the distance to distance switch for more than 2 seconds. "Smart
cruise control (SCC) mode" and "Cruise control (CC) mode" can
be selected.The speed control of the cruise control mode is
the same as that of the smart cruise control mode.
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(3) |
When using the cruise control mode, the driver must manually
access the distance to other vehicles as the system will not
automatically brake to slow down for other vehicles.
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System Operation
FCA : Forward Collision-avoidance Assist)
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1. |
Basic specification (front camera applied)
※ The time indicated will be changed according to vehicle speeds.
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Step 1 : Issue a visual (display) and vocal alarm when a danger
is detected.
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Step 2 : Reduce engine torque and activates FCA when there is
a high chance of collision.
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Step 3 : Activate emergency brake when a collision is imminent.
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After stopping the vehicle : Maintain the braking control for
a certain time and then release it.
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• |
Braking power is adjusted depending on the risk levels
of collision, but it is released immediately when it
detects the driver's action to avoid a collision.
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1) |
When it exceeded the maximum operation speed.
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2) |
When it detected driver's action to avoid a collision
such as sudden steering changes.
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3) |
When the shift lever is in R or P
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4) |
When you pressed the accelerator pedal half way.
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1) |
When you drive at 60km/h - 160km/h or faster, the system
does not go to step 3 of emergency braking.
- Full auto braking is not available.
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2) |
When you drive at 60km/h or faster, the system does
not go to step 3 of emergency braking.
- But a collision may occur at depending on the road
conditions.
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3) |
Offset should be less than 50%.
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4) |
FCA does not work on the vehicles backing up or resisting.
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Offset : Rate of non-overlapping on the line between the front
driving car and my car
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1) |
Offset 0% :
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2) |
Offset 100% :
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2. |
When the Smart Cruise Control is applied at the same time (front radar
added)
The time indicated will be changed according to vehicle speeds.
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Step 1 : Issue a visual (display) and vocal alarm when a danger
is detected.
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Step 2 : Reduce engine torque and activates FCA when there is
a high chance of collision.
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Step 3 : Activate emergency brake when a collision is imminent.
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After stopping the vehicle : Maintain the braking control for
a certain time and then release it.
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• |
Braking power is adjusted depending on the risk levels
of collision, but it is released immediately when it
detects the driver's action to avoid a collision.
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1) |
When it exceeded the maximum operation speed.
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2) |
When it detected driver's action to avoid a collision
such as sudden steering changes.
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3) |
When the shift lever is in R or P
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4) |
When you pressed the accelerator pedal half way.
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1) |
When you drive at 85km/h - 160km/h or faster, the system
does not go to step 2 of emergency braking.
- Full auto braking is not available.
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2) |
When you drive at 85km/h or faster, the system does
not go to step 3 of emergency braking.
- But a collision may occur at depending on the road
conditions.
- Partial braking may be applied according to the surrounding
environment.
- For the vehicle parked in front, full braking is applied
at level 3 after the warning only when the vehicle speed
is under 75 km/h.
Up to level 2 is performed when the vehicle speed is
over 75 km/h.
- For the pedestrian and cyclists, full braking is applied
at level 3 after the warning only when the vehicle speed
is under 65 km/h.
Up to level 1 is performed when the vehicle speed is
over 65 km/h.
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3) |
Offset should be less than 50%.
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4) |
FCA does not work on the vehicles backing up or resisting.
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Offset : Rate of non-overlapping on the line between the front
driving car and my car
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1) |
Offset 0% :
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2) |
Offset 100% :
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SCC : Smart Cruise Control
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1. |
Smart cruise control operating mode.
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• |
SCC : Smart Cruise Control
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2. |
Smart cruise control operating conditions.
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(1) |
Vehicle speed at approximately 0-160km/h (0-99.4mph)
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(2) |
Transmission in D or Sports mode
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(4) |
"CRUISE" switch ON (CRUISE indicator ON)
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3. |
Smart cruise control disabling conditions
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(5) |
Vehicle speed at more than approximately 160km/h (99.4mph)
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(6) |
Vehicle speed at less than approximately 10km/h (5mph)
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(7) |
Transmission in N or P or R
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(8) |
ESP/ TCS / ABS certain period of time operating
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(9) |
An accelerator pedal applied for more than 5min
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(10) |
ESP OFF" switch ON (ESP OFF indicator ON)
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(11) |
Parking brake applied
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(12) |
System failure (The warning indicator ON)
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(13) |
Crack, damage or wrong installation of smart cruise control
unit cover (The warning indicator ON)
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Specifications
Specification
Item
Specification
Power supply (V)
12
Operation voltage (V)
9 - 16
Schematic diagrams
Circuit Diagram
Repair procedures
Inspection
Inspection procedure for vehicle with Forward Collision-Avoidance Assist and
Smart Cruise Control system failure
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Front Radar Unit