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Improved compensation sgp30 (#5208)
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1 changed files with 12 additions and 3 deletions
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@ -181,9 +181,18 @@ void SGP30Component::send_env_data_() {
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ESP_LOGD(TAG, "External compensation data received: Temperature %0.2f°C", temperature);
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}
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float absolute_humidity =
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216.7f * (((humidity / 100) * 6.112f * std::exp((17.62f * temperature) / (243.12f + temperature))) /
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(273.15f + temperature));
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float absolute_humidity;
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if (temperature < 0) {
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absolute_humidity =
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216.67f *
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((humidity * 0.061121f * std::exp((23.036f - temperature / 333.7f) * (temperature / (279.82f + temperature)))) /
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(273.15f + temperature));
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} else {
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absolute_humidity =
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216.67f *
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((humidity * 0.061121f * std::exp((18.678f - temperature / 234.5f) * (temperature / (257.14f + temperature)))) /
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(273.15f + temperature));
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}
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uint8_t humidity_full = uint8_t(std::floor(absolute_humidity));
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uint8_t humidity_dec = uint8_t(std::floor((absolute_humidity - std::floor(absolute_humidity)) * 256));
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ESP_LOGD(TAG, "Calculated Absolute humidity: %0.3f g/m³ (0x%04X)", absolute_humidity,
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