SPRAC03 July   2024 IWR6843

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2TI mmWave Radar and Functional Safety
  6. 3IEC 61496-5 Functional Tests
    1. 3.1 Testing With Static Residual Movement
    2. 3.2 Detection Zone
    3. 3.3 Tolerance Zone
  7. 4Results
    1. 4.1 Response Time
    2. 4.2 Position Accuracy
      1. 4.2.1 Angular Accuracy Error Margins
    3. 4.3 Coexistance of Several RPDs
    4. 4.4 Interference by Object Outside the Detection Zone
    5. 4.5 Interference by Object Inside the Detection Zone
    6. 4.6 Manual Interference
  8. 5Environmental Tests
  9. 6Covered by Other Tests
  10. 7Test Setup Details
    1. 7.1 Detection Algorithm
  11. 8References

1 Introduction

In many safety systems found today, safety status devices such as pressure and optical/infrared sensors fail short of providing reliable human detection for safe operation and maximized up time. TI’s mmWave radar sensors provides a strong solution, especially when integrated in a safety compliant system, and is able to pass safety certification standards that are applicable.

Many applicable safety standards are created by the International Electrotechnical Commission (IEC), and are used across all electrical, electronic, and related technologies. The IEC TS 61496-5:2023 is a new safety standard created for safety-related systems that employ a Radar Protective Device (RPD) in order to detect people using a frequency-modulated continuous-wave (FMCW) transmission. A list of functional tests are defined by the standard to ensure proper sensor function and detection integrity under specified conditions.

The functional tests are used to check for various key abilities of the RPD, and this document focuses on providing results of the detection capability and integrity of the RPD for the more challenging tests. The RPDs used in this document are the IWR6843AOPEVM and IWR6843ISK. A detection zone is set at a designated range that the RPD is to be certified to, and the desired target must still be detected regardless of conflicting influences stated by the standard.