Lidar Airflow Control for Early Air Conditioner Gas Leak Response
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Solution Overview
Problem
Gas leakage detection in buildings is delayed due to the time it takes for rising or falling gas to reach gas alarms, leading to delayed alarm outputs and subsequent delayed user responses.
Innovation Solution
An air conditioning device equipped with a lidar for gas detection, which calculates gas concentration values and wind direction, allowing for early detection and controlled guidance of gas leaks to prevent accumulation near people or specific areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas alarms are installed in rooms to detect gas leakage, then gas leakage detection capability is provided, but detection timing is delayed due to the time required for gas to reach the alarm
Solution Approach 1:
The air conditioning device performs preliminary gas concentration measurement in the air conditioning target space before gas leakage reaches traditional alarm locations. By proactively measuring gas concentration in the space where air conditioning operates, the system detects gas leakage earlier than conventional alarms that rely on passive gas accumulation at fixed points.
Solution Approach 2:
The air conditioning device acts as an intermediary between gas leakage occurrence and alarm notification. Instead of relying on gas to physically travel to a alarm, the air conditioning device's airflow system serves as a mediator to transport gas samples to the measurement location, enabling earlier detection without requiring gas to traverse the entire room distance.
2Device complexity
If gas alarms merely output alarms, then simple alarm function is provided, but user response time is delayed as users must manually execute work
Solution Approach 1:
The air conditioning device performs self-service by automatically executing gas guidance control when gas leakage is detected. Instead of merely alarming and requiring manual user intervention, the system autonomously adjusts blowing direction and air volume to guide leaked gas away from inhabited areas, thereby reducing response time while maintaining functional simplicity.
Solution Approach 2:
The system implements feedback control by continuously monitoring gas concentration and automatically adjusting air conditioning operations in response. When gas leakage is detected, the system feeds back this information to the control unit, which then modifies blowing parameters to mitigate the hazard, creating a closed-loop response that eliminates manual intervention delays.
3Productivity
If air conditioning blows air into the air conditioning target space, then air conditioning function is provided, but leaked gas may accumulate near people or specific areas
Solution Approach 1:
The air conditioning device dynamically adjusts its operation based on gas leakage conditions. The control unit modifies blowing direction and air volume in real-time according to detected gas concentration levels and wind conditions, enabling the system to maintain effective air conditioning during normal operation while automatically adapting to prevent gas accumulation hazards when leakage occurs.
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 early detection and controlled response to gas leaks, reducing the risk of gas accumulation near people and improving response timing by guiding gas away from inhabited areas.
Implementation Method 1
a gas detection processing unit (26) for calculating a concentration value (N) of a detection target gas in an air conditioning target space (S1) by using a lidar (17)
Implementation Method 2
a wind measurement processing unit (29) for calculating a wind direction value in the air conditioning target space (S1) by using the lidar (17)
Data Source
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AI summary
An air conditioning device (200) includes: a gas detection processing unit (26) for calculating a concentration value (N) of a detection target gas in an air conditioning target space (S1) by using a lidar (17); and a blowing control unit (23) for controlling blowing directions (ΦB, ΘB) with respect to the air conditioning target space (S1) by using the concentration value (N).