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Fire Alert Unit

Overview

Description

This system enables early fire prediction by detecting volatile organic compounds (VOCs) and carbon monoxide (CO), providing a proactive alternative to traditional smoke detectors that only activate once a fire is already in progress, often too late for safe evacuation. During a fire, VOCs are typically released first as materials begin to overheat and decompose, followed by the production of CO as combustion intensifies. By analyzing data from both VOC and CO sensors, the system minimizes false alarms and enhances reliability. In addition to triggering audible alerts through a buzzer, it can send real-time notifications via Bluetooth® to smartphones, enabling remote monitoring of unoccupied areas such as server rooms or storage facilities.

System Benefits:

  • Accurate fire prediction using VOC and CO sensors, with the CO sensor provided by Figaro, a silicon partner.
  • Dual alert system with a buzzer and smartphone notifications via Bluetooth.
  • USB-enabled battery charging with an ultra-low IQ PMIC.

Comparison

Applications

Block Diagram

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WS061Connector Line.235Connector Line.253WS061WS061WS061Op Amp (I/V Amp)Op Amp (I/V Amp)Op Amp(I/V Amp)CO SensorCO SensorCO SensorFIGAROFIGAROFIGAROConnector ArrowConnector Arrow.175Connector Arrow.176Connector Arrow.1773.3V (Always-on LDO)3.3V (Always-on LDO)3.3V (Always-on LDO)3.3V (Controlled LDO)3.3V (Controlled LDO)3.3V (Controlled LDO)Battery 1-CellSheet.183Sheet.184Line 1pt.1552Line 1pt.1583Connector LineGround - ChassisSheet.190Sheet.191Li-ion BatteryLi-ion BatteryLi-ionBattery+++---USB-CUSB-CUSB-CUSB-CSheet.213Sheet.214Sheet.215Sheet.216Sheet.217Sheet.218Sheet.219Sheet.220Sheet.221Sheet.222Sheet.223Sheet.224Sheet.225Connector Arrow.2265.0V5.0V5.0VVOC SensorVOC SensorVOC SensorBi-directionalHumidity & Temperature SensorHumidity & Temperature SensorHumidity & Temperature SensorConnected signals arrowConnected signals arrow.232Connected signals arrow.233Connected signals arrow.234Speakerspeaker_8_Sheet.238Sheet.239Sheet.240Sheet.241Connector Line.242BuzzerBuzzerBuzzerConnector Line.2453.3V3.3V3.3VAntennaSheet.248Sheet.249Sheet.250Sheet.251Sheet.252Bluetooth LE BeaconBluetooth LE BeaconBluetooth LEBeaconGreenPAKGreenPAKGreenPAKCharger PMICCharger PMICCharger PMICSheet.255Bluetooth Low Energy ModuleBluetooth Low Energy ModuleBluetooth Low Energy ModuleADCADCADCI2CI2CI2CPWMPWMPWM
Exiting Interactive Block Diagram

Partners

Figaro Engineering Inc. Logo
Figaro Engineering Inc.

The TGS5141 from Figaro is an ultra-compact, battery-operable electrochemical CO sensor designed for high performance in space-constrained applications. It offers excellent repeatability and selectivity, a linear output to CO concentration, and long life, all while meeting UL2034, EN50291, and EN54-31 standards.

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