Acer ARFSA06 24GHz mmWave Radar Sensor User Guide

Acer Gadget Inc.
ARFSA06
24GHz Radar
User Guide Version: 1.0

Overview

This document serves as an overview of the product specifications for the 24GHz mmWave Radar Sensor manufactured by Alpha Networks Inc.
The sensor’s primary role centers on the detection of both distance and velocity pertaining to inmotion entities in close proximity. Its pivotal function lies in furnishing critical cautionary data, instrumental in minimizing collision hazards during vehicular operation.
1.1. Purpose
This document provides a detailed description of the product specifications for the 24GHz mmWave Radar Sensor. It covers the crucial requirements pertaining to functionality, performance, design constraints, and external interfaces to the best of its current knowledge. While aiming to be as comprehensive as possible, it recognizes the potential for additional important requirements to be added at a later stage.
1.2. Scope
From a technical standpoint, this document holds priority over other documents. Its purpose is to streamline planning, design, testing, and manufacturing processes associated with the product.
Serving as the comprehensive requirements document for the 24 GHz mmWave Radar Sensor, this Product Requirements Document equips the project team with vital information for understanding, designing, implementing, and managing the product. Additionally, the specifications sheet establishes a foundation for organizing business-related sales and support functions.
1.3. Audience”
This document serves various audiences and fulfills specific purposes during the Planning Phase:

• Engineers: They can refer to this document while creating a high-level design, including the user interface, based on the requirements.
• Functional Area Managers and Program Manager: They can utilize this document to estimate resources and schedules, as well as identify potential program risks.
• Safety Manager, Quality Assurance, and Test Engineers: This document provides them with the necessary information to establish quality and safety criteria and plan for testing.
• Writers: They can rely on this document to plan the product documentation effectively.
• Product Planning: This document assists in planning the product’s launch and distribution strategies.
• Product Support Engineers: They can refer to this document to devise a comprehensive plan for supporting the product throughout its lifecycle.

During the Development Phase, the approved version of this document functions as a crucial reference for the potential customers, project team, and internal suppliers. It ensures that the product being developed aligns with the defined product requirements. In case of any updates, the entire project team will be promptly notified and informed to ensure everyone is working with the most current information.

Description

The ARFSA06 product is an advanced integrated FMCW radar sensor designed for operation in the 24 GHz band. This radar sensor is specifically engineered to detect objects and measure their position in relation to the vehicle’s motion. Its primary focus is to enhance safety by effectively addressing a critical concern on the road—the bike’s blind spot, which is commonly associated with significant accidents and poses a constant threat to cyclists.
Tailored to the bike segment, this device stands as an economical solution. At the core of its design lies a singular mid-range radar sensor, contributing to a streamlined and effective package. This component triggers a warning signal whenever a swiftly  approaching vehicle or one entering the bike’s blind spot is detected. The implementation of this alert mechanism has the potential to significantly enhance road safety for users.

Key Features

• The ARFSA06 is a 24 GHz Radar specifically designed for Rear Collision Warning (RCW) applications.
• The radar enables simultaneous Doppler and Frequency-Modulated Continuous Wave (FMCW) processing, enabling fast scanning without the need for mode changes.
• It boasts low power consumption and high reliability, contributing to optimal performance.
• The compact size of the ARFSA06 facilitates easy integration into the bike’s existing setup.
• It is capable of detecting rearward vehicles up to a range of 50 meters for RCW purposes.
• The ARFSA06 offers CAN Interface, allowing integration with various systems.
• The radar device complies with IP67 standards when housed properly.

Application

• RCW radar system start conditions: Power ON
• 24GHz RCW radar detection behavior:

1. Right BSD Start condition: When the target enters between the B and C segments in the right area.
2. Center BSD Start condition: When the target enters between the B and C segments in the center area.
3. Left BSD Start condition: When the target enters between the B and C segments in the left area.
4. . The RCW Start condition: When the target enters between the A and B segments of the radar rear area.

Radar Setup

To fully utilize the capabilities of the ARFSA06 radar, it is crucial to set up the system correctly. For the Rear Collision Warning (RCW) application, it is advisable to install the radar at the back of the bike. It can be positioned underneath the rack, above the fender, or under the seat, provided that there are no metal materials or obstructions that may obstruct its detection area. Additionally, it’s important to ensure that the long side of the radar is parallel to the ground with no angle of inclination. Finally, the recommended height for installation ranges from 60 to 90cm above the surface level, depending on the specific model of the bike.

Specifications

Radar Characteristics
Operating frequency| 24| GHz
Power Supply| 12 (only Battery used)| V DC
Current Consumption (A)@12V| 38| mA
Peak Current (A)@12V| 180| mA
Distance measurement| 50| m
Speed measurement| 70| kph
FOV| H: ±60, V: ±30| deg
Distance measurement accuracy| 0.75| m
Emitted radar power| -8.0| dBm
Normal Power consumption@12V| 0.34| W
Mechanical dimension| 72(L) x 32(W) x 19(H)| mm
Mounting area| Rear, between 60∼90cm above road surface level
Temperature range| Operating : -40∼+85| °C
Storage: -40∼ +90| °C
Protection rating (Mating connector)| P67

** Specifications are subject to change without notice.

Warning Statement

7.1. FCC Warning Statement
FCC 15b devices (15.105)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This  equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC Part 15.21 information for user
You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.
FCC Part 15.19
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
FCC RF Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

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