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Compensate function use float data type

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samuelbles07
2024-10-21 01:49:01 +07:00
parent 8548d3e9f4
commit 63bb5f8ddb
8 changed files with 50 additions and 39 deletions
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39
src/PMS/PMS.cpp
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@ -322,11 +322,12 @@ int PMSBase::pm25ToAQI(int pm02) {
*
* @param pm25 Raw PM2.5 value
* @param humidity Humidity value (%)
* @return int
* @return compensated pm25 value
*/
int PMSBase::compensate(int pm25, float humidity) {
float PMSBase::compensate(float pm25, float humidity) {
float value;
float fpm25 = pm25;
// Correct invalid humidity value
if (humidity < 0) {
humidity = 0;
}
@ -334,23 +335,33 @@ int PMSBase::compensate(int pm25, float humidity) {
humidity = 100.0f;
}
if(pm25 < 30) { /** pm2.5 < 30 */
value = (fpm25 * 0.524f) - (humidity * 0.0862f) + 5.75f;
} else if(pm25 < 50) { /** 30 <= pm2.5 < 50 */
value = (0.786f * (fpm25 * 0.05f - 1.5f) + 0.524f * (1.0f - (fpm25 * 0.05f - 1.5f))) * fpm25 - (0.0862f * humidity) + 5.75f;
} else if(pm25 < 210) { /** 50 <= pm2.5 < 210 */
value = (0.786f * fpm25) - (0.0862f * humidity) + 5.75f;
} else if(pm25 < 260) { /** 210 <= pm2.5 < 260 */
value = (0.69f * (fpm25 * 0.02f - 4.2f) + 0.786f * (1.0f - (fpm25 * 0.02f - 4.2f))) * fpm25 - (0.0862f * humidity * (1.0f - (fpm25 * 0.02f - 4.2f))) + (2.966f * (fpm25 * 0.02f - 4.2f)) + (5.75f * (1.0f - (fpm25 * 0.02f - 4.2f))) + (8.84f * (1.e-4) * fpm25 * fpm25 * (fpm25 * 0.02f - 4.2f));
// If its already 0, do not proceed
if (pm25 == 0) {
return 0.0;
}
if (pm25 < 30) { /** pm2.5 < 30 */
value = (pm25 * 0.524f) - (humidity * 0.0862f) + 5.75f;
} else if (pm25 < 50) { /** 30 <= pm2.5 < 50 */
value = (0.786f * (pm25 * 0.05f - 1.5f) + 0.524f * (1.0f - (pm25 * 0.05f - 1.5f))) * pm25 -
(0.0862f * humidity) + 5.75f;
} else if (pm25 < 210) { /** 50 <= pm2.5 < 210 */
value = (0.786f * pm25) - (0.0862f * humidity) + 5.75f;
} else if (pm25 < 260) { /** 210 <= pm2.5 < 260 */
value = (0.69f * (pm25 * 0.02f - 4.2f) + 0.786f * (1.0f - (pm25 * 0.02f - 4.2f))) * pm25 -
(0.0862f * humidity * (1.0f - (pm25 * 0.02f - 4.2f))) +
(2.966f * (pm25 * 0.02f - 4.2f)) + (5.75f * (1.0f - (pm25 * 0.02f - 4.2f))) +
(8.84f * (1.e-4) * pm25 * pm25 * (pm25 * 0.02f - 4.2f));
} else { /** 260 <= pm2.5 */
value = 2.966f + (0.69f * fpm25) + (8.84f * (1.e-4) * fpm25 * fpm25);
value = 2.966f + (0.69f * pm25) + (8.84f * (1.e-4) * pm25 * pm25);
}
// No negative value for pm2.5
if (value < 0) {
value = 0;
return 0.0;
}
return (int)value;
return value;
}
/**