Revision 0:d4198719a504, committed 2014-09-07

Comitter:

macht

Date:

Sun Sep 07 16:19:42 2014 +0000

Commit message:

Thermistor

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Thermistor.cpp	Sun Sep 07 16:19:42 2014 +0000
@@ -0,0 +1,14 @@
+#include "Thermistor.h"
+
+Thermistor::Thermistor(float T0,float R0,float B){
+    T0_ = T0;
+    K0_ = T0_+273.0;
+    R0_ = R0;
+    B_ = B;
+}
+
+float Thermistor::trans_R2T(float R){
+    float K =  (B_*K0_)/(K0_*log(R/R0_)+B_);
+    float temp = K-273.0;
+    return temp;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Thermistor.h	Sun Sep 07 16:19:42 2014 +0000
@@ -0,0 +1,25 @@
+#ifndef THERMISTOR_H
+#define THERMISTOR_H
+#include "mbed.h"
+#include "math.h"
+
+class Thermistor
+{
+    public:
+        Thermistor(float T0,float R0,float B);   
+        float trans_R2T(float R);    //transfer resistance to temperature(degrees)
+    private:
+        float R0_;     //basic resisitance of thremister at basic temperature 
+        float T0_;     //basic temperature[°C]
+        float K0_;     //basic temperature[K]
+        float B_;      //B constant 
+};
+#endif
+/*
+float R2T(float input){
+    float K0 = T0+273.0;
+    float K =  (B*K0)/(K0*log(input/R0)+B);
+    float temp = K-273.0;
+    return temp;
+    
+}*/
\ No newline at end of file