Hella Kgaa RS5.3A Advanced Driver Assistance System User Guide
- June 5, 2024
- Hella Kgaa
Table of Contents
Hella Kgaa RS5.3A Advanced Driver Assistance System
The RS5.3A is an advanced driver assistant system, to warn the driver of the ego vehicle against potential collisions with other road users to the side, to the rear and to the front of the ego vehicle. This system is not meant to encourage aggressive driving. The absence of a warning will not guarantee the absence of other road users. Responsibility for the safe operation of the vehicle remains with the driver.
Functions
The sensor is capable to detect other objects. With this recognition capability it covers for example the following functionalities:
Blind-spot detection and lane-change warning
These functions monitor the neighboring lanes and warn the driver of the ego vehicle when an intended lane change could cause a collision with other traffic participants.
Rear traffic alert
This function monitors the difficult-to-see zone at the rear side of the ego vehicle and warns the driver against possible collisions with other moving road users when reversing out of a parking space.
Pre-crash rear
This function monitors the lane behind the ego vehicle and initiates safety measures when a crash from behind is unavoidable.
Safe exit
This function monitors the area next to the car doors on the passenger’s and on the driver’s side to the back and to the front and warns the driver if the car door cannot be opened safely.
System Architecture
The system consists of two or more radar sensor units which are mounted in the front or rear corners of a vehicle or on the left and right sides of a vehicle so that the respective peripheral sectors of the vehicle can be observed. The units interchange data between each other and the vehicle via the sensor CAN- bus. All units incorporate an RF part and a microcontroller to perform the radar signal processing.
Technical Data
| Supply voltage | +9 V … +18 V |
|---|---|
| Power consumption | typ. 3.7 W |
| Operating frequency range | 76000 MHz … 77000 MHz |
| Modulation bandwidth | < 1000 MHz |
| Modulation | FMCW (fast chirps) |
| Antenna feed power | 10 dBm (peak) |
| Rated Maximum output power | 25 dBm |
| Antenna type | Microstrip patch array |
| Transmit antenna gain | approx. 15 dBi |
| Operating temperature range | -40°C … +85°C |
Vehicle Integration
Since RADAR waves can penetrate plastics, the sensor integration is possible
behind the bumper fascia and thus invisible from the exterior. However, the
plastic and other materials which surround the sensor may cause bending,
refraction and reflection of the RADAR waves. Distances, clearances, selected
radii and other constructive elements in their arrangement can lead to
constructive or destructive interference of the RADAR waves. That must be
avoided by choosing a suitable integration position. The sensors should be
positioned in the vehicle at a height of 400 to 700 mm above the road surface.
If that cannot be fulfilled, then the deviating installation height must be
agreed upon with Hella GmbH. & Co. KGaA.
Warning: The radar sensor should be installed and operated with minimum
distance of 20 cm between the radiator and the human body.
Spatial orientation of the sensors
The RS5.3 sensors can be mounted in the front, side and/or rear area of a
vehicle under defined angles:
Rear side integration: approx. 45 deg
Side integration: approx. 90 deg
Front side integration: approx. 45 deg
Legal text requirements
Note: This User’s Guide is not intended for the end user. The RS5.3
Advanced Driver Assistance System is not sold separately from the vehicle. All
the full legal texts must be provided by the OEM in the User’s Manual of the
vehicle.
European Union (required in all the official EU languages depending where
the product is marketed):
Hereby, Hella GmbH & Co. declares that the radio equipment type RS5.3 is in
compliance with Directive 2014/53/EU. The full text of the EU declaration of
conformity is available at the following internet address:
www.hella.com/OEM
Technical information
- Frequency band: 76 … 77 GHz
- Transmission power: 20 dBm (average) EIRP
Manufacturer and Address: Hella GmbH & Co. KGaA Rixbecker Straße 75, 59552 Lippstadt, Germany
FCC Statment
USA:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment. This
device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation. Radio frequency radiation
exposure Information: This equipment complies with FCC radiation exposure
limits set forth for an uncontrolled environment. This equipment should be
installed and operated with minimum distance of 20 cm between the radiator and
your body. This transmitter must not be co-located or operating in conjunction
with any other antenna or transmitter. Canada (both English and French
language required): This device contains licence-exempt
transmitter(s)/receiver(s) that comply with Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s). Operation is subject to the
following two conditions:
- This device may not cause interference.
- This device must accept any interference, including interference that may cause undesired operation of the device.