People Counting for Demand Controlled Ventilation Using Sitara PLSDK and 3D ToF Reference Design
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Key Document


The TIDA-01436 reference design is a subsystem solution that uses TI's Sitara Processor Linux Software Development Kit (SDK) and TI’s 3D Time-of-Flight (ToF) image sensor to count the number of occupants in a defined area with high resolution and accuracy. ToF image sensors can process spacial data in three dimensions, so the sensor can be used to determine the number of objects present and can track their movements, and it has the capability to determine whether the objects are human bodies. This design uses TI's AM437x processor as the host controller with fully integrated ToF drivers supported by the Processor Linux SDK, which is ideal for embedded solutions. The combination of a ToF camera paired with a host controller board is more effective in real-time people counting than traditional surveillance cameras and video analytics.

  • End-to-end solution with fully integrated system
  • Built on TI's Processor Linux Software Development Kit (SDK) and runs on TI's AM437x GP EVM
  • People counting accuracy > 90%
  • Occupancy data configurable to be either real-time or periodic
  • Wide field of view: 87º (Diagonal); 74.4º (Horizontal) × 59.3º (Vertical)
  • 3D ToF camera can even see in the dark due to ambient light independence

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Schematic/Block Diagram

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Design Guide

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AM4379  Sitara processor: Arm Cortex-A9, PRU-ICSS, EtherCAT, 3D graphics  Processors  Sample & Buy View Design Kits & Evaluation Modules
OPT8241  QVGA-Resolution 3D Time-of-Flight (ToF) Sensor  Specialty sensors  Sample & Buy Not Available
OPT9221  Time-of-Flight (ToF) Controller for OPT8241  Specialty sensors  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
AM4379 Download -
OPT8241 Download -
OPT9221 Download -

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Technical documentation

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User guide (4)
Title Type Size (KB) Date
PDF 4030 01 May 2017
PDF 5093 02 Feb 2017
PDF 13093 02 Feb 2017
PDF 1135 13 May 2014
White paper (1)
Title Type Size (KB) Date
PDF 1011 07 May 2014
Design files (2)
Title Type Size (KB) Date
ZIP 341 02 May 2017
ZIP 687 02 May 2017
Related Tools & Software

Hardware development (1)

Name Part Number Tool Type
AM437x high security evaluation module  TMDSEVM437X  Evaluation board 

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