TIDUF51 November   2023

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 mmWave Sensor Application
      2. 2.2.2 IWR6432 UART Communication
      3. 2.2.3 LAUNCHXLCC1352R1 Communication
      4. 2.2.4 Sensors Application
      5. 2.2.5 Power Supply Design
      6. 2.2.6 IWRL6432 Power Supply Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 IWRL6432
      2. 2.3.2 CC1352R
      3. 2.3.3 BQ25616
      4. 2.3.4 TPS62850
      5. 2.3.5 HDC3020
      6. 2.3.6 OPT3005
      7. 2.3.7 DRV5032
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Getting Started Hardware
        1. 3.1.1.1 IWRL6432FSPEVM Initialization: IWRL6432 Programming
        2. 3.1.1.2 Base Board Initialization: CC1352R Programming
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
      1. 3.3.1 Demonstration Setup
    4. 3.4 Test Results
      1. 3.4.1 Radar Detect Distance Measurement
      2. 3.4.2 People Counting Test Results
      3. 3.4.3 Wireless Range Test Results
      4. 3.4.4 Power Consumption Test Results
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
      4. 4.1.4 Altium Project
      5. 4.1.5 Gerber Files
      6. 4.1.6 Assembly Drawings
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

1 System Description

In building security systems and fire safety systems, people tracking and counting are often required. Additionally, human gesture recognition can also be used in smart home and video surveillance systems. The mmWave radar technology provides range, velocity, and angle of reflection data of a person or object, which can be processed in different application-specific ways. This reference design demonstrates these applications by utilizing the IWRL6432 low-power, 57- to 64-GHz mmWave radar sensor. The mmWave radar module of this design utilizes a 22-mm × 42-mm printed-circuit-board (PCB) etched antenna with 2 transmit elements and 3 receive elements.

The wireless radio communication section of this design utilizes a CC1352R microcontroller, which provides long-range connection and ultra-low power consumption. The CC1352R is a multiprotocol sub-1 GHz and 2.4-GHz wireless microcontroller (MCU) supporting Bluetooth® 5.2 Low Energy, IEEE 802.15.4, Zigbee®, and so on.

This reference design utilizes a Li-ion battery as the main power source, which connects to the 3.0-V to 4.2-V input terminal. The TPS63806 wide VIN buck-boost converter, is utilized to convert this battery input to a 3.3-V output to power the system. Additionally, the board can also be powered via USB or an external DC input, which can also be used to charge the Li-ion battery.

This design guide addresses design theory, and the testing results of this reference design.