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A dual-wavelength photoelectric smoke detection simulation system based on amorphous gallium oxide broadband photodetectors was proposed to resolve the limitations of traditional light-scattering smoke detectors. These traditional detectors were susceptible to interference from dust and moisture, exhibit high false alarm rates, and feature prolonged response times. Based on Mie scattering theory, dual wavelengths (980 and 405 nm) were employed by the system to measure smoke particle volume surface area concentration. And SMD was derived for effective differentiation between fire-related and non-fire-related smoke. Measurement bias was minimized by optimization of detection angle parameters (980 nm: 60°, 405 nm: 120°) through theoretical analysis and simulation experiments. The system's effectiveness was validated by simulation tests. Results indicate that the system maintains low false alarm rates for test smoke (fire tests ≤3.3%, non-fire smoke ≤6.7%), demonstrating high sensitivity and low false alarm rates.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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