Hyundai Mobis MAR120 User manual

MAR120_77GHz Radar User Manual

1-1. Features and Main Specifications
1. Specifications for Designing and Developing
Vehicle Type Rear Lateral Radar
Shape
Main
Specifications
Assy •Solo SRR + Bracket
Sensor •Solo SRR
S/W
•Radar signal processor DSP SW
•Warning Logic (BCW/RCCW) SW
•Additional function [BCA-R(Braking or Steering), RCCA, SEA, (BCA-R)+] SW
Accessory •Bracket applied (Except Extension Wire and Absorber)
Special note •New sensor (Solo SRR) applied
Rear Lateral Radar

1-2. System Composition
Outline of System Composition System Architecture Composition
1. Specification of Design Development

2. Rear Lateral Radar Detail of Function
1. Outline
- Blind-Spot Collision Warning (BCW) and Blind-Spot Collision Avoidance Assist-Rear) (BCA-R)
- Rear Cross-Traffic Collision Warning (RCCW) and Rear Cross-Traffic Collision Avoidance Assist (RCCA)
- Safe Exit Assist(SEA)
Cluster
2. System Composition

2. Rear Radar Function Description
Function
Activation
condition
•Own speed above 20 kph
•The radius of curvature above 125m
Alarm
zone
•Transverse : {3m + (width/2)} ~ {3.4m + (width/2)} within (reversible depending on own speed)
•longitudinal : 3.8m from B pillar to rear side ~ 6.3m (Rear area is reversible depending on own speed)
Alarm
condition
•Entered target car in warning area
•Relative velocity of target car within -10 ~ 255kph
Radar detects blind spot of vehicles to alert drivers
- Warning method : Primary -LED lighting, Secondary - LED blinking + alert sound
Alarm zone
2-1. BCW (Blind Spot)

3. Rear Radar Function Description
2-2. BCW (High speed approach)
Function
Activation
condition
•Own speed above 20 kph
•The radius of curvature above 125m
Alarm
zone
•Transverse : {3m + (width/2)} ~ {3.4m + (width/2)} within (reversible depending on own speed)
•longitudinal : {BCW End of blind spot alarm zone} ~ {rear side 70m} (reversible depending on own speed)
Alarm
condition
•Entered target car in warning area
•Relative velocity of target car within -10 ~ 255kph
•Estimated collision time of target car (TTC) within 4.5sec(3.8sec)
(※ TTC can be set by the driver)
Radar detects fast approaching vehicles to alert drivers
- Warning method : Primary -LED lighting, Secondary - LED blinking + alert sound
Alarm zone

2. Rear Radar Function Description
2-3. BCA (Driving)
Function
Activation
condition
•Activated BCW, Own speed within 60kph ~ 180kph.
•MFC Normal operated.
Alarm
zone
•Transverse : 0.4m + (width/2) ~ 2.2m + (width/2)
•longitudinal : Position of driver’s eye ~ 1.5 m rearward from rear bumper end.
Alarm
and
breaking
condition
•Entered target car in warning area.
•When own vehicle attempts lane departure.
Anti-collision assist function through control of braking in case of collision
with adjacent vehicle during lane departure
- Warning meth : LED lighting, alert sound
- Control method : Braking Control via ESC

2. Rear Radar Function Description
2-4. BCA (Departure)
Function
Activation
condition
•Activated BCW, Own speed within 3kph.
•ESC normal operating.
Alarm
zone
•Transverse : 2.5m from the center of own vehicle.
•longitudinal : 60m rearward from the front bumper.
Alarm
and
breaking
condition
•Entered target car in warning area.
•Target TTI < Threshold value
•Ego TTI < Threshold value
Warning (sound/on screen) and control (Breaking) system that If there
is a rear approaching object(Other vehicles, pedestrians and etc.) when
vehicle is moving forward.
- Warning meth : LED lighting, alert sound
- Control method : Braking Control via ESC
<Scenario of posterolateral BCA(Departure)>
2.8
2.5
2
0 5.5 11.1
Speed of target car(mps)
상대차 TTI Threshold value
Target Car TTI
2.8
2.5
2
300 400 500
Own car SAS Angle (Degree)
자차 TTI Threshold value
Own car TTI

2. Rear Radar Function Description
2-5. RCCW
Function
Activation
condition •Gear is on Reverse, Own speed within 0kph ~ -10kph.
Alarm
zone
•Transverse : 25m
•longitudinal : 6m
Alarm
condition
•Entered target car in warning area.
•Relative velocity of target car within 4 ~ 60kph.
•Estimated collision time with in 2.1~3.5sec (reversible depending on relative velocity of target car)
Providing warning to driver via detecting side approach vehicles
when reversing
- Warning meth : LED lighting, Cluster is on screen, alert sound

2. Rear Radar Function Description
2-6. RCCA
Function
Activation
condition
•Reverse gear (Maintain operation at gear shift of N stage after RCCA operation at stage R)
•Not signed parking Brake.
•Own speed within 0kph ~ -10kph.
•ESC is normal operated and RCCA Brake is available to operate.
Alarm
zone
•Transverse : Within 10m from the center of own car.
•longitudinal : From rear bumper end (0m) to within 6m.
•Driving angle difference with own car : within 55deg.
Alarm
condition
•Entered target car in warning area.
•Relative velocity of target car is above 5kph.
•Own vehicle intersection area arrival time 1sec and target car intersection area arrival time is below 2sec.
A system that detects side approach vehicles when reversing and
warns and controls them to prevent accidents
- Warning meth : LED lighting, Cluster is on screen, alert sound
- Control method : Control method : Braking Control via ESC