kazunori ogasawara / NTCThermistor

NTC Thermistor class.

Dependents:   FermenterTempArray

Fork of Thermistor by kazunori ogasawara

NTCThermistor.h@2:b052ac698148, 2014-09-09 (annotated)

Committer:
macht
Date:
Tue Sep 09 02:48:51 2014 +0000
Revision:
2:b052ac698148
Parent:
Thermistor.h@0:d4198719a504
Child:
3:e9f38dc974f8
Add class discription

Who changed what in which revision?

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