Gas Alarm Device with Dynamic Heating Control
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Solution Overview
Problem
Existing gas alarm devices face high power consumption when detecting gases with slow output response characteristics, such as methane, as they require extended heating periods to distinguish between target and non-target gases, leading to inefficient energy use.
Innovation Solution
A gas alarm device with a sensing section and heater section that adjusts heating periods based on electrical characteristics, using first and second determination conditions to extend or stop heating, thereby reducing power consumption while accurately detecting target gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the heating period of time is extended to easily determine whether or not the present gas is the detection target gas, then the detection accuracy is improved, but the power consumption becomes high
Solution Approach 1:
The heating control section dynamically adjusts the heating period of time based on real-time electrical characteristic measurements. The system transitions from a fixed heating period to a variable heating period that adapts to the detected gas conditions, extending heating only when necessary to distinguish target gases from non-target gases.
Solution Approach 2:
The invention changes the heating period parameter from a constant value to a variable value determined by electrical characteristic analysis. By monitoring changes in electrical characteristics during heating and comparing them against predetermined conditions, the system optimizes the heating period to achieve accurate detection while minimizing unnecessary energy consumption.
2Reliability
If the heating period of time is extended long to distinguish detection target gas from non-detection target gas, then the detection reliability is improved, but the energy efficiency deteriorates
Solution Approach 1:
The gas detection section continuously monitors electrical characteristics during the heating period and provides feedback to the heating control section. This feedback mechanism allows the system to determine whether the heating period should be extended based on actual detection needs, ensuring reliable gas differentiation while avoiding unnecessary energy loss from prolonged heating.
Solution Approach 2:
The system performs preliminary assessment of electrical characteristics early in the heating cycle to determine whether extension is necessary. By evaluating the rate of change and magnitude of electrical characteristic variations, the system can make informed decisions about extending the heating period before significant energy consumption 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
The device effectively reduces power consumption by optimizing heating periods, allowing for accurate differentiation between target and non-target gases, thus enhancing energy efficiency and detection accuracy.
Implementation Method 1
The heater section may heat the sensing section
Implementation Method 2
Electrical characteristics of the sensing section may change by a contact with detection target gas
Data Source
AI summary
A gas alarm device is provided, where a heating control section extends a heating period of time of a heater section if a first determination section determines that electrical characteristics of a sensing section of a gas sensor satisfy a first condition, and continues extension of the heating period of time of the heater section according to a determination result, by a second determination section, of whether or not the electrical characteristics upon lapse of extension of the heating period of time satisfy a second condition, and a gas detection section determines, according to the electrical characteristics upon lapse of extension time, that detection target gas is detected.