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Improved compensation sgp30 (#5208)

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arno1801 2023-08-06 19:59:17 -04:00 committed by GitHub
parent 00f9af70a9
commit 62fed4c1eb
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1 changed files with 12 additions and 3 deletions
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15
esphome/components/sgp30/sgp30.cpp
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@ -181,9 +181,18 @@ void SGP30Component::send_env_data_() {
ESP_LOGD(TAG, "External compensation data received: Temperature %0.2f°C", temperature);
}
float absolute_humidity =
216.7f * (((humidity / 100) * 6.112f * std::exp((17.62f * temperature) / (243.12f + temperature))) /
(273.15f + temperature));
float absolute_humidity;
if (temperature < 0) {
absolute_humidity =
216.67f *
((humidity * 0.061121f * std::exp((23.036f - temperature / 333.7f) * (temperature / (279.82f + temperature)))) /
(273.15f + temperature));
} else {
absolute_humidity =
216.67f *
((humidity * 0.061121f * std::exp((18.678f - temperature / 234.5f) * (temperature / (257.14f + temperature)))) /
(273.15f + temperature));
}
uint8_t humidity_full = uint8_t(std::floor(absolute_humidity));
uint8_t humidity_dec = uint8_t(std::floor((absolute_humidity - std::floor(absolute_humidity)) * 256));
ESP_LOGD(TAG, "Calculated Absolute humidity: %0.3f g/m³ (0x%04X)", absolute_humidity,