mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 11:44:13 +01:00
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#pragma once
|
|
|
|
#include "abstract_aqi_calculator.h"
|
|
|
|
namespace esphome {
|
|
namespace hm3301 {
|
|
|
|
class AQICalculator : public AbstractAQICalculator {
|
|
public:
|
|
uint16_t get_aqi(uint16_t pm2_5_value, uint16_t pm10_0_value) override {
|
|
int pm2_5_index = calculate_index_(pm2_5_value, pm2_5_calculation_grid_);
|
|
int pm10_0_index = calculate_index_(pm10_0_value, pm10_0_calculation_grid_);
|
|
|
|
return (pm2_5_index < pm10_0_index) ? pm10_0_index : pm2_5_index;
|
|
}
|
|
|
|
protected:
|
|
static const int AMOUNT_OF_LEVELS = 6;
|
|
|
|
int index_grid_[AMOUNT_OF_LEVELS][2] = {{0, 51}, {51, 100}, {101, 150}, {151, 200}, {201, 300}, {301, 500}};
|
|
|
|
int pm2_5_calculation_grid_[AMOUNT_OF_LEVELS][2] = {{0, 12}, {13, 35}, {36, 55}, {56, 150}, {151, 250}, {251, 500}};
|
|
|
|
int pm10_0_calculation_grid_[AMOUNT_OF_LEVELS][2] = {{0, 54}, {55, 154}, {155, 254},
|
|
{255, 354}, {355, 424}, {425, 604}};
|
|
|
|
int calculate_index_(uint16_t value, int array[AMOUNT_OF_LEVELS][2]) {
|
|
int grid_index = get_grid_index_(value, array);
|
|
int aqi_lo = index_grid_[grid_index][0];
|
|
int aqi_hi = index_grid_[grid_index][1];
|
|
int conc_lo = array[grid_index][0];
|
|
int conc_hi = array[grid_index][1];
|
|
|
|
return (value - conc_lo) * (aqi_hi - aqi_lo) / (conc_hi - conc_lo) + aqi_lo;
|
|
}
|
|
|
|
int get_grid_index_(uint16_t value, int array[AMOUNT_OF_LEVELS][2]) {
|
|
for (int i = 0; i < AMOUNT_OF_LEVELS; i++) {
|
|
if (value >= array[i][0] && value <= array[i][1]) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
};
|
|
|
|
} // namespace hm3301
|
|
} // namespace esphome
|