GP2Y0A21YK0F IRsensor 用ライブラリ
Dependents: NHK2019_mae_v6 NHK2019_main_v6 NHK2019_usiro_v6 NHK2019_mae_v6 ... more
IRsensor.cpp
- Committer:
- skouki
- Date:
- 2019-06-25
- Revision:
- 1:fe97d826508d
- Parent:
- 0:d0a252247fec
- Child:
- 2:35b3dd6f7f17
File content as of revision 1:fe97d826508d:
#include "IRsensor.h" IRsensor::IRsensor(PinName pin):a_in(pin) { } float IRsensor::getInputvoltage(){ float voltage = a_in.read()*3.3; return voltage; } float IRsensor::getDistance(int n){ float distance_sum=0; for(int i=0;i<n;i++){ distance_sum += changeVtoD(getInputvoltage()); } return distance_sum / n; } float IRsensor::changeVtoD(float voltage) { float distance; if (voltage > 2.285f) { distance = 0.0f; } else if (voltage > 1.645f) { distance = -7.8125f * voltage + 27.8515f; } else if (voltage > 1.305f) { distance = -14.7058f * voltage + 39.1911f; } else if (voltage > 1.08f) { distance = -22.222f * voltage + 49.0f; } else if (voltage > 0.928f) { distance = -32.89473f * voltage + 60.526f; } else if (voltage > 0.835f) { distance = -53.7634f * voltage + 79.89247f; } else if (voltage > 0.737f) { distance = -51.02040f * voltage + 77.60204f; } else if (voltage > 0.673f) { distance = -78.12500f * voltage + 97.57812f; } else if (voltage > 0.608f) { distance = -76.92307f * voltage + 96.76923f; } else if (voltage > 0.562f) { distance = -108.6956f * voltage + 116.0869f; } else if (voltage > 0.515f) { distance = -106.3829f * voltage + 114.7872f; } else if (voltage > 0.474f) { distance = -121.9512f * voltage + 122.8048f; } else if (voltage > 0.447f) { distance = -185.1851f * voltage + 152.7777f; } else if (voltage > 0.432f) { distance = -333.333f * voltage + 219.0f; } else { distance = 9999.9f; } return distance; }