TIDUF76 June   2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Why use Radar?
    2. 1.2 TI Corner Radar Design
    3. 1.3 Key System Specification
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 AWRL1432 Single-Chip Radar Solution
      2. 2.3.2 AWRL1432BOOST-BSD Evaluation Module
      3. 2.3.3 TCAN4550-Q1 Integrated CAN-FD Controller and Transceiver
    4. 2.4 System Design Theory
      1. 2.4.1  Antenna Configuration
      2. 2.4.2  Chirp Configuration and System Performance
      3. 2.4.3  Data Path
      4. 2.4.4  Chirp Timing
      5. 2.4.5  Memory Allocation
      6. 2.4.6  Frame Reconfiguration
      7. 2.4.7  Vmax Extension
      8. 2.4.8  Group Tracker
      9. 2.4.9  Dynamic Clutter Removal
      10. 2.4.10 CAN-FD Transceiver
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
      1. 3.1.1 Hardware
      2. 3.1.2 Software and GUI
    2. 3.2 Test Setup
    3. 3.3 Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks

2.2 Design Considerations

Today's entry-level BSD sensors typically require a radar sensor to detect and track a vehicle that is moving at 130kmph at a distance up to 120m away from the sensor. To meet these requirements, high-gain antennas with 13dB of additional gain are used on the AWRL1432BOOST-BSD to increase the max detection range up to 120m. In addition, the demo implements frame reconfiguration that is used to run alternating "slow" and "fast" frames in the RF front end. This alternation enables the maximum velocity extension feature to detect velocities up to ±144kmph.

Some vehicle architectures today require two CAN-FD interfaces for each BSD sensor to communicate with each other and the central ECU. The AWRL1432BOOST-BSD includes an integrated CAN-FD transceiver (TCAN4550-Q1), serving as a reference for system designs requiring a second CAN-FD. The TCAN4550-Q1 provides an interface between the CAN bus and the AWRL1432 through SPI.