Thermopile-Based Occupancy Detector for People Counting Applications Reference Design

(ACTIVE) TIDA-00213

Description & Features

Technical Documents

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Key Document

Description

The Thermopile Based Occupancy Detector is a subsystem solution that uses a thermopile array to sense the body heat of people within its field of view and estimate the number of people present. This system requires less signal processing complexity than a video system to estimate the number of people present and uses less power.

Features
  • Thermopile array senses area occupants’ body heat
  • System estimates the number of people it sees by counting heat signatures
  • Low Noise, Low Power Analog Front End with 16 bit ADC and SPI Interface, uses only 221µA during operation
  • Uses less than 190 mW during operation
  • This circuit design is tested and includes firmware, design data and a detailed User Guide

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM334  3-Terminal Adjustable Current Source  Voltage references  Sample & Buy Not Available
LM3630A  LM3630A High-Efficiency Dual-String White LED Driver  LED drivers  Sample & Buy View Design Kits & Evaluation Modules
LMP93601  Low-noise, High gain, 3-Channel AFE for Thermopile Sensors  Specialty sensors  Sample & Buy Not Available
LP5907  250mA Ultra-Low-Noise Low-IQ LDO  Power management  Sample & Buy View Design Kits & Evaluation Modules
MSP430F5529  25 MHz MCU with Integrated USB Phy, 128KB Flash, 8KB RAM, 12Bit/14 Channel ADC, 32BIT HW Multiplier  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
REF2925  2.5V 100ppm/Degrees C, 50uA in SOT23-3 Series (Bandgap) Voltage Reference  Voltage references  Sample & Buy Not Available
TPS61071  Adjustable, 600-mA Switch, 90% Efficient PWM Boost Converter in ThinSOT-23  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
TPS791  Ultralow Noise, High PSRR, Fast RF 100-mA Low-Dropout Linear Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM334 Download Download
Download Download
LMP93601 Download
LP5907 Download Download
Download -
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MSP430F5529 Download Download
REF2925 Download Download
TPS61071 Download Download
TPS791 Download
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 19403 17 Jul 2015 51
Design files (7)
Title Abstract Type Size (KB) Date Views
ZIP 6647 10 Nov 2014 1 1
ZIP 1351 10 Nov 2014 4
PDF 2943 10 Nov 2014 3
PDF 449 10 Nov 2014 3
PDF 452 10 Nov 2014 3
PDF 245 10 Nov 2014 6
PDF 470 10 Nov 2014 11
Related Tools & Software

Software (1)



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