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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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WS061 Connector Line.235 Connector Line.253 WS061 WS061 WS061 Op Amp (I/V Amp) Op Amp (I/V Amp) Op Amp(I/V Amp) CO Sensor CO Sensor CO Sensor FIGARO FIGARO FIGARO Connector Arrow Connector Arrow.175 Connector Arrow.176 Connector Arrow.177 3.3V (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-Cell Sheet.183 Sheet.184 Line 1pt.1552 Line 1pt.1583 Connector Line Ground - Chassis Sheet.190 Sheet.191 Li-ion Battery Li-ion Battery Li-ionBattery + + + - - - USB-C USB-C USB-C USB-C Sheet.213 Sheet.214 Sheet.215 Sheet.216 Sheet.217 Sheet.218 Sheet.219 Sheet.220 Sheet.221 Sheet.222 Sheet.223 Sheet.224 Sheet.225 Connector Arrow.226 5.0V 5.0V 5.0V VOC Sensor VOC Sensor VOC Sensor Bi-directional Humidity & Temperature Sensor Humidity & Temperature Sensor Humidity & Temperature Sensor Connected signals arrow Connected signals arrow.232 Connected signals arrow.233 Connected signals arrow.234 Speaker speaker_8_ Sheet.238 Sheet.239 Sheet.240 Sheet.241 Connector Line.242 Buzzer Buzzer Buzzer Connector Line.245 3.3V 3.3V 3.3V Antenna Sheet.248 Sheet.249 Sheet.250 Sheet.251 Sheet.252 Bluetooth LE Beacon Bluetooth LE Beacon Bluetooth LEBeacon GreenPAK GreenPAK GreenPAK Charger PMIC Charger PMIC Charger PMIC Sheet.255 Bluetooth Low Energy Module Bluetooth Low Energy Module Bluetooth Low Energy Module ADC ADC ADC I2C I2C I2C PWM PWM PWM
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