REVISION HISTORY © AUTOLIV INC. THIS DOCUMENT AND THE DATA DISCLOSED HEREIN OR HEREWITH IS PROPRIETARY AND MAY NOT BE REPRODUCED, USED OR DISCLOSED IN WHOLE OR IN PART WITHOUT WRITTEN PERMISSION FROM AUTOLIV INC. Rev Description 000 001 Initial Release per ECO 066734 Added “and User Manual” to title and added para to section 7.1. SP Date Apprv’d Ref. PLM Ref. PLM AEL, Inc. 1011B Pawtucket Blvd.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION Doc. No. E567781 Rev. 001, Page 2 of 14 TABLE OF CONTENTS 1.0 PURPOSE/SCOPE 3 2.0 MATERIALS/EQUIPMENT 3 3.0 APPLICABLE DOCUMENTS 3 4.0 DEFINITIONS 3 5.0 SPECIFICATIONS 5.1. Preface 5.2. SLR Sensor 5.2.1. Dimensions and Weight of the SLR Sensor 3 3 3 3 5.0 SPECIFICATIONS 5.2.2 Detection Range / Azimuth Angle Measurement Range 5.2.3 Detection Angle Elevation 5.3.1 Distance To The Bumper Material 5.3.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 1.0 Doc. No. E567781 Rev. 001, Page 3 of 14 PURPOSE/SCOPE This document describes the specifications for installation of type SLR Radar Sensors. 2.0 MATERIALS/EQUIPMENT N/A 3.0 APPLICABLE DOCUMENTS Outline 6181175 DIN 40050-9 IP6K9K IEC 68-2-6 Fc IEC 668-2-14Nb IEC68-2-32 IEC68-2-52 SAE J1211 4.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 4 of 14 SPECIFICATIONS Figure 1 Important note: The two mounting holes are not specified for mounting the complete sensor. They do not provide the mechanical properties to keep the sensor in place. They shall be used to fix the sensor in a mounting bracket. Mounting tabs are to be fastened tight to mounting bracket using appropriate fastener. Maximum strength per tab is 270 N.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 5 of 14 SPECIFICATIONS 5.2 SLR Sensor (cont’d) 5.2.2 Detection Range / Azimuth Angle Measurement Range Figure 2 displays the detection area of the SLR sensor. One should differentiate between the detection area of the sensor and the angle measurement area. The angle measurement area is reduced to ±40° around bore sight whereas the detection area is ±65°.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 6 of 14 SPECIFICATIONS 5.2 SLR Sensor (cont’d) 5.2.3 Detection Angle Elevation Figure 3 shows the detection area of the antennas in elevation. The detection area of ±8 ° is related to the 3dB points, this means the area where the signal amplitude is reduced by 3dB compared to bore sight direction.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 7 of 14 SPECIFICATIONS 5.3 Installation Specifications For Individual Sensors 5.3.1 Distance To The Bumper Material The distance of the SLR sensor to the bumper shall be between 5 and 20 mm. If the distance is below 5 mm a significant signal loss occurs. If the distance is larger, error ranges may appear within the close range. 5 – 20mm Figure 5 5.3.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 8 of 14 SPECIFICATIONS 5.3 Installation Specifications For Individual Sensors (cont’d) 5.3.3 Effect Of Type- And Thickness Of Fascia Material Autoliv has examined various fascia material samples with a thickness of 2.5 – 4 mm. For those samples the radar signal is attenuated by 0.5 – 2 dB (corresponds to reduction of the range of coverage of 2 – 11%).
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 9 of 14 SPECIFICATIONS 5.3 Installation Specifications For Individual Sensors (cont’d) 5.3.6 Environmental Conditions The following lists the environmental conditions the sensor is designed to operate in. The location and mounting of the sensor must not create conditions that exceed the following: 1. 2. 3. 4.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 5.0 Doc. No. E567781 Rev. 001, Page 10 of 14 SPECIFICATIONS 5.3 Installation Specifications For Individual Sensors (cont’d) 5.3.7 Protection From Mud And Dirt Buildup There will be performance degradation if excessive buildup occurs on the antenna areas and especially for wet mud.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 6.0 Doc. No. E567781 Rev. 001, Page 11 of 14 SLR SENSOR SYSTEM The following observations refer to the combination of several SLR sensors into one sensor system. Many applications require several sensors networked together to achieve the desired function. The sensors should be placed in the best possible location for optimal coverage and range performance relative to the specific applications.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 6.0 Doc. No. E567781 Rev. 001, Page 12 of 14 SLR SENSOR SYSTEM 6.2. Numbering of the Sensors The following provides a guideline for sensor numbering (addressing) in a multi-sensor system. The example used is for a front and rear bumper system. Each bumper contains up to 4 sensors connected on a private CAN bus. A separate CAN bus is used for the front and rear bumpers.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 6.0 Doc. No. E567781 Rev. 001, Page 13 of 14 SLR SENSOR SYSTEM 6.3. Installation Dimensions 6.3.1 Y-direction The Y location of the sensors will determine the extent of the coverage zone and the size of any detection gaps. The location selections are highly dependent on the desired application and bumper dimensions.
Title: Installation Specifications and User Manual, Radar Sensors INSTALLATION SPECIFICATION 7.0 Doc. No. E567781 Rev. 001, Page 14 of 14 APPENDIX 7.1. Range Performance vs Attenuation The chart below illustrates the effect of attenuation of the radar signals on the radar sensor detection range. Factors that can cause attenuation of the radar signals include fascia material, paint, dirt and mud buildup, foam material, or other mechanical obstructions in the sensor field of view.
