HELLA and KGaA 012692A Field Disturbance Sensor User Manual Annex No
Hella KGaA Hueck & Co. Field Disturbance Sensor Annex No
Contents
- 1. Users Manual-Functional Description
- 2. Users Manual-Statements
Users Manual-Functional Description
Date: 2014-03-07
Page 1 of 1
Vers. no. 1.14
m. dudde hochfrequenz-technik
Rottland 5a
D-51429 Bergisch Gladbach/ Germany
Tel: +49 2207-96890
Fax +49 2207-968920
Annex no. 5
Functional Description /
User Manual
Hella KGaA
Hueck & Co.
59552 Lippstadt
Technical Bulletin
Date: 2014-11-11
No.:
Page 1
Subject:
LCA 3.5 – Lane Change Assistant Author: Wixforth
Org: E-ED-DAS-DR
Ref.: Enclosures:
signed by: checked by:
This document is confidential. Its contents are not to be exploited, passed on or disclosed to third parties without our express permission. All rights are reserved.
Hella 3399EN (2000-05)
LCA 3.5 – Lane Change Assistant
Mazda: LCA 3.5 SG1 - M
LCA 3.5 SG2 – M
GM: LCA 3.5 SG1 - GM
LCA 3.5 SG2 - GM
System Function and Purpose
The LCA is an advanced driver assistant system, to warn the driver of the subject vehicle against
potential collisions with vehicles to the side and/or to the rear of the subject vehicle, and moving in the
same direction as the subject vehicle during lane change manoeuvres. The system therefore detects
vehicles to the rear and sides of the subject vehicle.
When the subject vehicle driver indicates the desire to make a lane change, the system will evaluate the
situation and warn the driver if a lane change is not recommended. LCA is not meant to encourage
aggressive driving. The absence of a warning will not guarantee that the driver can safely make a lane
change manoeuvre. The system will not take any automatic action to prevent possible collisions.
Responsibility for the safe operation of the vehicle remains with the driver.
LCA System Architecture
The LCA consists of two radar sensor units which are mounted behind the rear bumper in the left and
right rear corners of a car so that the rear and the sides of the car can be observed.
One of the units is the main control unit "master" and the other is the "slave".
The two units interchange data between each other via the sensor CAN-bus.
The master interchanges data with other electronic control units of the vehicle via the vehicle CAN-bus.
Both units incorporate an RF part and a DSP to perfom the radar signal processing.
Only the master incorporates a microprocessor which handles the communication to the vehicle CAN-
bus.
The warning lamps for the left and the right side are connected to the slave.
Hella KGaA
Hueck & Co.
59552 Lippstadt
Subject:
LCA 3.5 – Lane Change Assistant
Date: 2014-11-11
No.:
Page 2 of 4
Signed by: Checked by:
Hella 3399DE (2000-05)
Vertraulich. Weitergabe sowie Verwertung und Mitteilung des Inhalts ist nur mit unserer ausdrücklichen Genehmigung gestattet. Alle Rechte vorbehalten.
block diagram of LCA system architecture
block diagram shows RF part and DSP part for master and slave
Hella KGaA
Hueck & Co.
59552 Lippstadt
Subject:
LCA 3.5 – Lane Change Assistant
Date: 2014-11-11
No.:
Page 3 of 4
Signed by: Checked by:
Hella 3399DE (2000-05)
Vertraulich. Weitergabe sowie Verwertung und Mitteilung des Inhalts ist nur mit unserer ausdrücklichen Genehmigung gestattet. Alle Rechte vorbehalten.
The RF parts each consist of
• one 24-GHz-VCO,
• one transmit antenna and
• three receivers (each consisting of antenna, LNA, mixer, BPF and base-band amplifier).
The transmit signal is generated by the 24-GHz-VCO.
The 24-GHz-VCO is frequency modulated by a modulation control circuit and the DSP.
A frequency divider is used to align the modulation of the 24-GHz-VCO and to keep it within the
frequency band limits.
The transmit antenna is a microstrip patch antenna array with 1x8 elements.
It is designed to illuminate the rear and the side of the vehicle and is thus a medium gain antenna.
The receivers down-convert the receive signals directly to zero-IF by using the 24-GHz-VCO signal.
The base-band receive signals are digitized by ADCs in the DSP.
The receive antennas are microstrip patch antennas which also have a medium gain (1x8 elements).
Technical Data
Hella part number of master 6PZ 011.719-00
(Mazda …)
Hella part number of slave 6PZ 011.719-20
(Mazda …)
Supply Voltage +9 V … +15 V
Supply Current 0,36 A
Frequency Band 1 24075 MHz ... 24175 MHz
Modulation Bandwidth < 100 MHz
Frequency Band 2 24150 MHz … 24250 MHz
Modulation Bandwidth < 100 MHz
Frequency Band 3 24050 MHz … 24250 MHz
Modulation Bandwidth < 200 MHz
Modulation FMCW
EIRP average < +12,7 dBmW
EIRP peak < +20 dBmW
Antenna Type microstrip patch array
Transmit Antenna Gain 10 dBi
Operating Temperature Range -40...85°C
Storage Temperature Range
Hella KGaA
Hueck & Co.
59552 Lippstadt
Subject:
LCA 3.5 – Lane Change Assistant
Date: 2014-11-11
No.:
Page 4 of 4
Signed by: Checked by:
Hella 3399DE (2000-05)
Vertraulich. Weitergabe sowie Verwertung und Mitteilung des Inhalts ist nur mit unserer ausdrücklichen Genehmigung gestattet. Alle Rechte vorbehalten.
Abbreviations
ADC analog-to-digital converter
BPF band pass filter
CAN controller area network
CP communication processor
DSP digital signal processor
EIRP equivalent isotropically radiated power
FMCW frequency modulated continuous wave
IF intermediate frequency
LNA low noise amplifier
RF radio frequency
Rx Receive
Tx Transmit
VCO voltage controlled oscillator
XTAL crystal oscillator