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TIDA-010941

Smart analog sensor interface for smoke detection with ambient light cancellation reference design

TIDA-010941

Design files

Overview

This reference design provides a low BOM cost smoke detector design that passes UL217 9th edition sensitivity and fire room tests. Using a modulation-based photoelectric architecture, this reference design is able to achieve high rejection of ambient light for application in chambered or chamberless smoke detection. This design also has a high signal-to-noise ratio for the signal chain that helps to enable robust algorithms for reduced false alarms in smoke detector applications and particulate sensing in air quality sensing applications. This design uses the low-power modes of the MSPM0L1306 microcontroller to achieve 10 years of battery life from a 9V alkaline battery.

Features

Modulation-based sensing signal chain with ambient light rejection
Advanced compressive sensing technique for low-power operation
Dual wavelength, dual angle optical design for reduced false alarm smoke detection and particulate air quality sensing
Signal chain signal-to-noise ratio of 77dB (300 pulses)
Total current consumption of 5.8uA (16 pulses, 0.1Hz ODR) for 10+ years battery life with 9V alkaline battery
Passes UL217 9th edition sensitivity and fire room tests

Industrial

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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.

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Design guide — TIDA-010941

PDF | HTML

TIDUF52.PDF (3115 K)

Reference design overview and verified performance test data

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Test report — TIDA-010941

SSIT003.PDF (2140 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

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Schematic — TIDA-010941

TIDMCA8.PDF (428 K)

Detailed schematic diagram for design layout and components

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Bill of materials (BOM) — TIDA-010941

TIDMCA9.PDF (130 K)

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

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Assembly drawing — TIDA-010941

TIDMCB0.PDF (267 K)

Detailed overview of design layout for component placement

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CAD/CAE symbol — TIDA-010941

TIDMCB2.ZIP (1579 K)

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

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CAD/CAE symbol — TIDA-010941

TIDMC63.ZIP (96 K)

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

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Gerber file — TIDA-010941

TIDCGK4.ZIP (455 K)

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

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PCB layout — TIDA-010941

TIDMCB1.PDF (1082 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Analog switches & muxes

SN74LVC1G66 — 5-V, 1:1 (SPST), 1-channel analog switch

Data sheet: PDF | HTML

Analog switches & muxes

TS5A623157 — 5-V, 2:1 (SPDT), 2-channel analog switch with undershoot & overshoot voltage protection

Data sheet: PDF

Arm Cortex-M0+ MCUs

MSPM0L1306 — 32-MHz Arm® Cortex®-M0+ MCU with 64-KB flash, 4-KB SRAM, 12-bit ADC, comparator, OPA

Data sheet: PDF | HTML

General-purpose op amps

TLV9062 — Dual, 5.5-V, 10-MHz operational amplifier

Data sheet: PDF | HTML

Humidity sensors

HDC2010 — 2% RH ultra-small, low-power digital relative humidity sensor

Data sheet: PDF | HTML

Linear & low-dropout (LDO) regulators

TPS7A24 — 200-mA, 18-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with enable

Data sheet: PDF | HTML

Start development

Software

GUI for evaluation module (EVM)

TIDA-010941-GUI — TIDA-010941 GUI

A graphical user interface (GUI) was developed with Python for this reference design. Developers can log data, view particle information, and see whether smoke was detected. Both time and signal response are also streamed to the terminal.

Download options

TIDA-010941-GUI — TIDA-010941 GUI

Latest version

Version: 1.0

Release date: 16 Dec 2023

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TIDA-010941_GUI.zip — 101 K

TIDA-010941 GUI files for Python

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Documentation

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MSPM0-SASI-SMOKE-DETECTION-GUI_1.00.00.00_manifest.html

Release Infomation

First release version

Technical documentation

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	Type	Title		Date
	Design guide	Smart Analog Sensor Interface for Smoke Detection With Ambient Light Cancellation Reference Design	PDF \| HTML	Dec. 12, 2023
	Test report	TIDA-010941 UL217 Test Report		Nov. 16, 2023

Related design resources

Software development

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MSPM0-SDK — MSPM0 software development kit (SDK)

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