Air Conditioner Smoke Detection With Differentiated Fire Alerts
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Solution Overview
Problem
Existing air conditioner-based fire alarm systems do not differentiate alarm modes based on the severity of a fire, leading to inadequate user response.
Innovation Solution
An air conditioner with a microprocessor and smoke detector that distinguishes between warning and alarm modes by detecting smoke concentration, activating appropriate sound modes and sending information to a server for user notification, with specific conditions triggering different responses such as warning or evacuation prompts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single alarm mode is used for all fire situations, then the device structure is simple, but the alarm effectiveness is insufficient
Solution Approach 1:
The patent applies parameter changes by varying alarm sound parameters (sound pressure level, frequency, waveform) according to different fire severity levels. The controller adjusts these acoustic parameters dynamically based on smoke concentration readings, transforming a single static alarm into multiple differentiated alarm modes without requiring separate alarm devices for each scenario.
Solution Approach 2:
The patent segments the alarm function into multiple distinct modes (first alarm sound mode for general warnings, second alarm sound mode for severe fires) with different acoustic characteristics. This segmentation allows the system to provide targeted alarm responses for different fire severity levels, improving overall alarm effectiveness while maintaining a unified device structure.
2Reliability
If alarm modes are differentiated by fire severity, then the alarm effectiveness is improved, but the control system complexity increases
Solution Approach 1:
The controller changes operational parameters (alarm mode selection, sound characteristics) based on the detected smoke concentration parameter. By establishing threshold values for smoke concentration, the system automatically transitions between different alarm modes, achieving accurate fire severity assessment through parameter-based control logic rather than complex decision-making algorithms.
Solution Approach 2:
The system implements feedback control where the smoke detector continuously monitors smoke concentration and feeds this information back to the controller. The controller then adjusts the alarm mode accordingly, creating a closed-loop system that automatically adapts the alarm response to the actual fire situation, improving response accuracy while keeping control logic manageable through threshold-based decision-making.
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
Enables differentiated alarm responses based on smoke concentration levels, providing users with pertinent information to take appropriate actions, such as self-extinguishing small fires or evacuating for larger ones, enhancing fire safety.
Implementation Method 1
indoor unit is provided with a smoke detector for detecting smoke concentration in a space
Data Source
Figure 1
Figure 2~3
AI summary
A method employing an air conditioner (1) for reporting a fire, and an air conditioner (1). The method comprises: detecting a smoke concentration in a space where an indoor unit (11) of the air conditioner (1) is located; and when a second setting condition or a first setting condition is satisfied, the air conditioner (1) activating a second mode to provide a fire report notification or activating a first mode to provide an alert. The air conditioner (1) comprises an indoor unit (11) provided with a smoke detector (111) and a microprocessor (12). The microprocessor (12) comprises an information receiving and transmitting unit (121) and an information processing unit (122). The information receiving and transmitting unit (121) is used to receive or transmit information. The received information comprises information about a smoke concentration detected by the smoke detector (111). The transmitted information comprises alarm information and fire reporting notification information. The information processing unit (122) is used to activate a second mode to provide a fire report notification or to activate a first mode to provide an alert when a second setting condition or a first setting condition is satisfied.