kazunori ogasawara / NTCThermistor

NTC Thermistor class.

Dependents:   FermenterTempArray

Fork of Thermistor by kazunori ogasawara

NTCThermistor.h@3:e9f38dc974f8, 2014-09-09 (annotated)

Committer:
macht
Date:
Tue Sep 09 02:53:49 2014 +0000
Revision:
3:e9f38dc974f8
Parent:
2:b052ac698148 
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Who changed what in which revision?

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macht 3:e9f38dc974f8 1 #ifndef NTCTHERMISTOR_H
macht 3:e9f38dc974f8 2 #define NTCTHERMISTOR_H
macht 0:d4198719a504 3 #include "mbed.h"
macht 0:d4198719a504 4 #include "math.h"
macht 3:e9f38dc974f8 5 /**
macht 3:e9f38dc974f8 6 *NTC Thermistor class
macht 3:e9f38dc974f8 7 */
macht 2:b052ac698148 8 class NTCThermistor
macht 0:d4198719a504 9 {
macht 0:d4198719a504 10 public:
macht 2:b052ac698148 11 /** Create a NTC Thermistor instance
macht 2:b052ac698148 12 *@param T0 basic temperature[degrees/celsious]
macht 2:b052ac698148 13 *@param R0 basic resistance[ohm]. Thermistor takes this resistance at basic temperature T0.
macht 2:b052ac698148 14 *@param B B-parameter.
macht 2:b052ac698148 15 */
macht 2:b052ac698148 16 NTCThermistor(float T0,float R0,float B);
macht 2:b052ac698148 17 /** Transfer temperature from resistance.
macht 2:b052ac698148 18 *@param R resitance of NTC thermistor
macht 2:b052ac698148 19 */
macht 0:d4198719a504 20 float trans_R2T(float R); //transfer resistance to temperature(degrees)
macht 0:d4198719a504 21 private:
macht 0:d4198719a504 22 float R0_; //basic resisitance of thremister at basic temperature
macht 0:d4198719a504 23 float T0_; //basic temperature[°C]
macht 0:d4198719a504 24 float K0_; //basic temperature[K]
macht 0:d4198719a504 25 float B_; //B constant
macht 0:d4198719a504 26 };
macht 0:d4198719a504 27 #endif
macht 0:d4198719a504 28 /*
macht 0:d4198719a504 29 float R2T(float input){
macht 0:d4198719a504 30 float K0 = T0+273.0;
macht 0:d4198719a504 31 float K = (B*K0)/(K0*log(input/R0)+B);
macht 0:d4198719a504 32 float temp = K-273.0;
macht 0:d4198719a504 33 return temp;
macht 0:d4198719a504 34
macht 0:d4198719a504 35 }*/