空气污染指数计算matlab
时间: 2023-08-28 11:04:52 浏览: 137
空气污染指数计算程序
以下是一个简单的MATLAB代码来计算空气污染指数(AQI):
```matlab
% 输入污染物浓度和标准限值
pm25 = input('PM2.5浓度(μg/m³):');
pm10 = input('PM10浓度(μg/m³):');
co = input('CO浓度(mg/m³):');
no2 = input('NO2浓度(μg/m³):');
o3_8h = input('O3 8小时滑动平均值(μg/m³):');
so2 = input('SO2浓度(μg/m³):');
pm25_limit = 35;
pm10_limit = 50;
co_limit = 4;
no2_limit = 40;
o3_8h_limit = 160;
so2_limit = 50;
% 计算AQI
pm25_aqi = calc_aqi(pm25, pm25_limit, 0, 50, 0, 100);
pm10_aqi = calc_aqi(pm10, pm10_limit, 0, 50, 0, 100);
co_aqi = calc_aqi(co, co_limit, 0, 50, 0, 100);
no2_aqi = calc_aqi(no2, no2_limit, 0, 50, 0, 100);
o3_8h_aqi = calc_aqi(o3_8h, o3_8h_limit, 100, 150, 150, 200);
so2_aqi = calc_aqi(so2, so2_limit, 0, 50, 0, 100);
aqi_array = [pm25_aqi, pm10_aqi, co_aqi, no2_aqi, o3_8h_aqi, so2_aqi];
aqi = max(aqi_array);
% 输出AQI和空气质量等级
if aqi <= 50
level = '优';
elseif aqi <= 100
level = '良';
elseif aqi <= 150
level = '轻度污染';
elseif aqi <= 200
level = '中度污染';
elseif aqi <= 300
level = '重度污染';
else
level = '严重污染';
end
fprintf('AQI = %d, 空气质量等级为%s\n', aqi, level);
function aqi = calc_aqi(c, c_low, i_low, i_high, c_high, c_very_high)
% 计算单个污染物的AQI
if c <= c_low
aqi = i_low;
elseif c <= c_high
aqi = (i_high - i_low) / (c_high - c_low) * (c - c_low) + i_low;
elseif c <= c_very_high
aqi = (100 - i_high) / (c_very_high - c_high) * (c - c_high) + i_high;
else
aqi = 100;
end
end
```
使用时,输入各项污染物的浓度和标准限值即可计算出AQI和空气质量等级。其中,`calc_aqi`函数用于计算单个污染物的AQI值。
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