HVAC Coil Airflow Sensor Reference Design for Predictive Maintenance in Air Filter Replacement

(ACTIVE) TIDA-01070

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Key Document

Description

The TIDA-01070 TI design provides a reference for monitoring airflow efficiency and temperature through HVAC systems. The design is used in conjunction with solid state relays and piezoelectric vibration sensors to monitor and react accordingly to low airflow and low temperature conditions through the air handler. The system also includes a calibration algorithm for consistent performance across all system setups.

Features
  • Low temperature condenser cutoff
  • One button system calibration
  • Designed to work with air handler 24 VAC transformer
  • 14.08 mA current consumption when running
  • Operating conditions: -40°C to 85°C

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMT84  1.5V-Capable, 10 uA Analog Output Temperature Sensor in SC70 and TO-92  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
LP2985-N  Micropower 150mA Low-Noise Ultra-Low-Dropout Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2311  16 MHz Ultra-Low-Power Microcontroller - 4 KB FRAM, 1 KB SRAM, 16 IO, 8ch 10-bit ADC, OpAmp, TIA  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G27  Single 3-Input Positive-NOR Gate  Gate  Sample & Buy Not Available
TLV2313  Low-Power, RRIO, 750-uV Offset, 1-MHz Operational Amplifier for Cost-Sensitive Systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV313  Low-Power, RRIO, 750-uV Offset, 1-MHz Operational Amplifier for Cost-Sensitive Systems   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV4313  Low-Power, RRIO, 750-uV Offset, 1-MHz Operational Amplifier for Cost-Sensitive Systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPD1E10B06  Single-Channel ESD in 0402 Package With 10pF Capacitance and 6V Breakdown  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS5401  3.5V to 42V Input, 0.5 A Step Down Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LMT84 Download
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Download Download
LP2985-N Download Download
MSP430FR2311 Download Download
Download Download
Download Download
SN74LVC1G27 Download Download
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TLV2313 Download
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TLV313 Download
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TLV4313 Download
TPD1E10B06 Download Download
TPS5401 Download -

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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 9826 25 Oct 2016 20
White papers (1)
Title Abstract Type Size (KB) Date Views
PDF 1774 02 Nov 2016 543
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 628 29 Sep 2016 10
ZIP 2121 29 Sep 2016 7
PDF 2425 29 Sep 2016 5
PDF 428 29 Sep 2016 5
PDF 67 29 Sep 2016 10
PDF 1950 29 Sep 2016 15
Related Tools & Software

Software (1)



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