Smoke Detector IAQ Sensor False Alarm Verification

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Solution Overview

Problem

Current smoke detection systems often generate false alarms due to various reasons such as faulty equipment, human error, or environmental factors, leading to unnecessary responses from users and fire departments.

Innovation Solution

A smoke detector system that incorporates an internal air quality (IAQ) sensor to differentiate between real and false alarms by monitoring air quality parameters such as PM2.5, PM10, CO/CO2, temperature, and humidity, and communicating this information through a network to connected devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual verification is required when smoke detector alarms, then users can confirm fire presence, but fire department resources are wasted due to false alarms

Engineering Contradiction:

Improvealarm accuracyVSAvoidfire department response time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system uses IAQ sensors to continuously monitor air quality parameters (PM2.5, PM10, CO, TVOC, temperature, humidity) and provides feedback to verify whether the smoke alarm condition is genuine or false, enabling automated differentiation without manual intervention

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The IAQ sensor acts as an intermediary device that objectively measures air quality parameters to determine alarm validity, removing the need for subjective manual verification by users and preventing unnecessary fire department dispatches

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If multiple IAQ sensors are integrated into the smoke detector, then alarm verification accuracy is improved, but device complexity increases

Engineering Contradiction:

Improveair quality monitoring accuracyVSAvoidsensor integration complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent integrates multiple independent IAQ sensors (PM2.5, PM10, CO, TVOC, temperature, humidity sensors) into a single smoke detector device, combining their functions to achieve comprehensive air quality monitoring and accurate alarm verification in one unified system

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The smoke detector is designed with multi-functional capabilities by incorporating various IAQ sensors that can detect different types of air quality parameters, enabling the single device to perform multiple verification functions simultaneously

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system provides automatic verification of smoke presence, reducing false alarms and enabling users and fire departments to make informed decisions, thereby saving time and resources.

Implementation Method 1

a PM2.5 sensor, a PM10 sensor

Methodology Applied

Scientific EffectLight scattering: Scattering

Implementation Method 2

a CO/CO2 gas sensor

Methodology Applied

Scientific EffectGas detection:

Implementation Method 3

a temperature sensor

Methodology Applied

Scientific EffectThermal detection:

Implementation Method 4

a humidity sensor

Methodology Applied

Scientific EffectHumidity detection:

Implementation Method 5

a fire detecting odor sensor, and a total volatile organic compounds (TVOC) sensor

Methodology Applied

Scientific EffectOdor detection:

Data Source

PatentUS12288460B2Verifying a false alarm on a smoke detector using an internal air quality sensor

Publication Date: 2025.04.29 KIDDE FIRE PROTECTION LLC

AI summary

A smoke detector system is provided. The smoke detector system includes a smoke detection element. The smoke detector system further includes an internal air quality (IAQ) sensor. The IAQ sensor is disposed and configured to confirm whether an alarm issued by the smoke detection element is real or a false alarm.