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The heating in smelting and rolling laboratory is with natural gas radiation as well as the CO generated by natural gas leakage and incomplete combustion can lead to such accidents as fires and explosions very easily. In the article, a wireless and low-cost detection system of flammable gas is developed, which is with the STM32F103 series single chip computer as main control system. The concentrations of methane and CO in workshop are monitored with MQ-2 and MQ-7 gas sensors, temperature and humidity in workshop are monitored with SHT30 sensor of temperature and humidity as well as the data collected by sensors is transmitted to mobile terminal with Bluetooth module. The data processing and analysis are realized with mobile terminal and Android operating system, which could meet the requirements of monitoring flammable gas used in smelting and rolling laboratory.
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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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