当前位置: 首页 -  蓝鲸科创 - 正文

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

2019-12-13 19:49 蓝鲸科创 矜暮85°c
A+ A-

• Micro USB cable to connect to PC

The AWR1642 device is an integrated single-chip FMCW radar sensor capable of operaTIon in the 76- to81-GHz band. The device is built with TI’s low-power 45-nm RFCMOS process and enablesunprecedented levels of integraTIon in an extremely small form factor. The AWR1642 is an ideal solutionfor low-power, self-monitored, ultra-accurate radar systems in the automotive space.
图6.AWR1642低噪音LDO电路图

• Other Interfaces Available to User Application

详解 TI AWR1642汽车短距离雷达(SRR)参考设计


图4.短距离雷达框图

– ARM® Cortex®-R4F-Based Radio ControlSystem

TI公司的AWR1642是工作在76-81GHz频段的单片FMCW雷达传感器,采用低功耗的45nm的RFCMOS工艺,具有调频连续波(FMCW)收发器,集成了整数PLL,发送器,接收器,基带和A2D,有四个接收通路,2个发送通路,发送功率12.5dBm,76 - 77 GHz时的接收噪音14dB,77-81 GHz时的接收噪音15dB,采用基于ARM® Cortex®-R4F的无线电控制系统,具有内置的校验和自测,主要用在盲点检测,变道辅助,停车辅助,路口交通警报,占用检测,简单手势识别和车门开启应用.本文介绍了AWR1642主要特性,框图和应用电路与参考电路图,评估模块AWR1642BOOST主要特性以及采用评估模块的短距离雷达(SRR)参考设计TIDEP-0092主要特性和指标,框图,电路图和材料清单.
• On-Chip Memory: 1.5MB

详解 TI AWR1642汽车短距离雷达(SRR)参考设计


AWR1642应用:
– Supports 40 MHz Crystal Connection with LoadCapacitors
图7.AWR1642参考电路PCB设计图(顶层走线)

图27.参考设计TIDEP-0092电路图(13)

• Clustering and Tracking on Detected Outputs
– Self-calibrating System Across Frequency andTemperature
参考设计TIDEP-0092材料清单:



图19.参考设计TIDEP-0092电路图(5)

图13.参考设计TIDEP-0092外形图
• Detect Objects (Such as Cars and Trucks) up to80-m Away With Range Resolution of 35 cm;Objects 20-m Away Detectable With Resolution of4.3 cm
• Integrated Peripherals


– TX Power: 12.5 dBm
– Ultra-Accurate Chirp (Timing) Engine Based onFractional-N PLL
图8.AWR1642参考电路PCB设计图(顶层走线Closeup)



• Easy Hardware Design
The standard 20-pin BoosterPack headers make the device compatible with a wide variety of TI MCULaunchPads and enables easy prototyping.


AWR1642主要特性:

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

详解 TI AWR1642汽车短距离雷达(SRR)参考设计



图22.参考设计TIDEP-0092电路图(8)

tidrqr9.pdf

• Occupancy Detection

• Built-in Calibration and Self-Test (Monitoring)

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

图2.AWR1642自主雷达传感器汽车应用框图

图30.参考设计TIDEP-0092电路图(16)
• Single-Chip FMCW Radio Detection and Ranging(RADAR) for SRR Applications

评估模块AWR1642BOOST主要特性:

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

图11.评估模块AWR1642BOOST外形图(背面)

– 0.65-mm Pitch, 161-Pin 10.4 mm × 10.4 mmFlip Chip BGA Package for Easy Assembly andLow-Cost PCB Design

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

– RX Noise Figure:

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

• Cross Traffic Alert (CTA)

图28.参考设计TIDEP-0092电路图(14)


图17.参考设计TIDEP-0092电路图(3)


详解 TI AWR1642汽车短距离雷达(SRR)参考设计

– Supports Autonomous Mode (Loading UserApplication from QSPI Flash Memory)


详解 TI AWR1642汽车短距离雷达(SRR)参考设计

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

• Mounting brackets, screws, and nuts to place the printed-circuit board (PCB) vertical

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

图26.参考设计TIDEP-0092电路图(12)



– Internal Memories With ECC
图5.AWR1642参考电路图

图29.参考设计TIDEP-0092电路图(15)

– Small Solution Size
参考设计TIDEP-0092应用:
AWR1642评估模块(AWR1642BOOST)单片mmWave检测解决方案

• Antenna Field of View ±60º With AngularResolution of Approximately 15º

详解 TI AWR1642汽车短距离雷达(SRR)参考设计


详解 TI AWR1642汽车短距离雷达(SRR)参考设计




详解 TI AWR1642汽车短距离雷达(SRR)参考设计


详解 TI AWR1642汽车短距离雷达(SRR)参考设计

图12.评估模块AWR1642BOOST框图


– Up to 2 UARTs
• AWR1642BOOST evaluation board
– –93 dBc/Hz (77 to 81 GHz)
图18.参考设计TIDEP-0092电路图(4)

Autonomous control of a vehicle provides quality-of-life and safety benefits in addition to making therelatively mundane act of driving safer and less difficult. The quality-of-life features include the ability of avehicle to park itself or to determine whether a lane change is possible and provide features like automaticcruise control—where a vehicle maintains a constant distance with respect to the car ahead of it,essentially tracking the velocity of the car in front of it. Autonomous breaking and collision avoidance aresafety features that prevent accidents caused by driver inattention. These features work by observing thearea in front of a car and alerting the autonomous driving subsystems if obstacles are observed that arelikely to hit the car. Implementing these technologies require a variety of sensors to detect obstacles in theenvironment and track their velocities and positions over time.
Classification, AUTOSAR, and Interface Control



• Blind Spot Detection
图23.参考设计TIDEP-0092电路图(9)


图1.AWR1642功能框图

图3.处理器子系统框图

• Blind Spot Detection (BSD)

• Parking Assistance
– 2-Lane LVDS Interface for Raw ADC Data andDebug Instrumentation
– 15 dB (77 to 81 GHz)
– Supports External Oscillator at 40 MHz


• AECQ100 Qualified
• Two 20-pin LaundPad connectors that leverages the ecosystem of the TI LaunchPad


• One button and two LEDs for basic user interface

• Autonomous Parking
– Embedded Interference Detection Capability


• 60-pin, high-density (HD) connector for raw analog-to-digital converter (ADC) data over LVDS andtrace-data capability
• Lane Change Assist (LCA)
– Built-in Firmware (ROM)
参考设计TIDEP-0092主要系统指标:

详解 TI AWR1642汽车短距离雷达(SRR)参考设计



– Supports Externally Driven Clock (Square/Sine)at 40 MHz
采用评估模块AWR1642BOOST的短距离雷达(SRR)参考设计TIDEP-0092
• AWR1642 Demonstrates Design
• Cross Traffic Alert
• AWR1642 Advanced Features
– 76- to 81-GHz Coverage With 4 GHz AvailableBandwidth

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

– GPIOs
– Four Receive Channels

详解 TI AWR1642汽车短距离雷达(SRR)参考设计





• Host Interface

详解 TI AWR1642汽车短距离雷达(SRR)参考设计



– I/Os Support Dual Voltage 3.3 V/1.8 V



– Embedded Self-monitoring With No HostProcessor Involvement


详解 TI AWR1642汽车短距离雷达(SRR)参考设计

图25.参考设计TIDEP-0092电路图(11)

• Onboard CAN-FD transceiver
以及


swru508b.pdf
• Clock Source

详解 TI AWR1642汽车短距离雷达(SRR)参考设计

• FMCW Transceiver

– Up to 2 SPI Channels
• 5-V power jack to power the board

• C674x DSP for FMCW Signal Processing
The TIDEP-0092 provides a foundation for a shortrange radar (SRR) application using the AWR1642evaluation module (EVM). This design allows the userto estimate and track the position (in the azimuthalplane) and the velocity of objects in its field of view up to 80 m.


参考设计TIDEP-0092主要特性:
图9.AWR1642参考电路PCB设计图(底层走线)