Advanced Motion Detector Using PIR Sensors Reference Design For False Trigger Avoidance


Design files


This reference design is an analog front-end for an advanced motion detector based on two PIR sensors for false trigger avoidance, enabling machine learning. This design has a standard BoosterPack™ pinout, uses Texas Instruments low-power components, and runs on one AAA alkaline battery cell.
The PIR_MOTION GUI helps to run faster the data acquisition and visualization from the reference design through a number of graphs and allows control of certain parameters. It shows in real time the PIR sensor data and the wavelet transform (CWT) as well as the humidity, temperature and light sensor data.

  • Two PIR sensors with separate area of detection
  • Sensitivity up to >30 feet (≈ 9 m)
  • Standard BoosterPack pinout
  • False detection avoidance
  • Battery based low-power design
  • Work with different MCUs and DSPs
  • Machine learning enabled
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRQ54.PDF (605 K)

Detailed schematic diagram for design layout and components

TIDRQ55.PDF (72 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRQ56.PDF (390 K)

Detailed overview of design layout for component placement

TIDRQ58.ZIP (898 K)

Files used for 3D models or 2D drawings of IC components

TIDCD89.ZIP (709 K)

Design file that contains information on physical board layer of design PCB

TIDRQ57.PDF (2021 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS610981Low input voltage, 3.3-V output voltage, synchronous boost converter with integrated LDO

Data sheet: PDF | HTML

TLV3691Nanopower, small-size, single comparator

Data sheet: PDF | HTML
General-purpose op amps

OPA349Single, 5.5-V, 70-kHz, low quiescent current (1-μA), RRIO operational amplifier

Data sheet: PDF
Humidity sensors

HDC1010±2% low-power digital humidity and temperature sensor in WCSP

Data sheet: PDF | HTML
Light sensors

OPT3002Light-to-digital sensor

Data sheet: PDF | HTML
Precision ADCs

ADS111416-Bit 860SPS 1-Ch Delta-Sigma ADC With PGA, Oscillator, Vref, Comparator, and I2C

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

TLV369Single, 800-nA, 1.8-V, RRIO op amp with zero-crossover distortion for cost-sensitive application

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Advanced Motion Detector Using PIR Sensors Reference Design for False Triggers (Rev. B) Oct. 16, 2017
Application note Wireless Motion Detector With Sub-1 GHz SimpleLink™ Wireless MCU (Rev. C) May 10, 2021
More literature Techniques for PIR-based motion detection Dec. 15, 2020

Related design resources

Reference designs

TIDA-00489 Low Power Wireless PIR Motion Detector Reference Design Enabling 10 Year Coin Cell Battery Life TIDA-00759 Low-Power PIR Motion Detector With Bluetooth Smart & 10-Year Coin Cell Battery Life Reference Design TIDA-01398 Ultra Low-Power Wireless PIR Motion Detector for Cost-Optimized Systems Reference Design

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