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Pt100 and Pt1000 temperature sensors handling

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This commit is contained in:
Josef Pavlik 2014-02-14 12:15:31 +01:00
parent adbf226de1
commit 831fc2a952
2 changed files with 69 additions and 0 deletions
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5
Marlin/Configuration.h
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@ -120,6 +120,11 @@
// 51 is 100k thermistor - EPCOS (1k pullup)
// 52 is 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
//
// 1047 is Pt1000 with 4k7 pullup
// 1010 is Pt1000 with 1k pullup (non standard)
// 147 is Pt100 with 4k7 pullup
// 110 is Pt100 with 1k pullup (non standard)
#define TEMP_SENSOR_0 -1
#define TEMP_SENSOR_1 -1

64
Marlin/thermistortables.h
View file

@ -857,6 +857,70 @@ const short temptable_60[][2] PROGMEM = {
};
#endif
// Pt1000 and Pt100 handling
//
// Rt=R0*(1+a*T+b*T*T) [for T>0]
// a=3.9083E-3, b=-5.775E-7
#define PtA 3.9083E-3
#define PtB -5.775E-7
#define PtRt(T,R0) ((R0)*(1.0+(PtA)*(T)+(PtB)*(T)*(T)))
#define PtAdVal(T,R0,Rup) (short)(1024/(Rup/PtRt(T,R0)+1))
#define PtLine(T,R0,Rup) { PtAdVal(T,R0,Rup)*OVERSAMPLENR, T },
#if (THERMISTORHEATER_0 == 110) || (THERMISTORHEATER_1 == 110) || (THERMISTORHEATER_2 == 110) || (THERMISTORBED == 110) // Pt100 with 1k0 pullup
const short temptable_110[][2] PROGMEM = {
// only few values are needed as the curve is very flat
PtLine(0,100,1000)
PtLine(50,100,1000)
PtLine(100,100,1000)
PtLine(150,100,1000)
PtLine(200,100,1000)
PtLine(250,100,1000)
PtLine(300,100,1000)
};
#endif
#if (THERMISTORHEATER_0 == 147) || (THERMISTORHEATER_1 == 147) || (THERMISTORHEATER_2 == 147) || (THERMISTORBED == 147) // Pt100 with 4k7 pullup
const short temptable_147[][2] PROGMEM = {
// only few values are needed as the curve is very flat
PtLine(0,100,4700)
PtLine(50,100,4700)
PtLine(100,100,4700)
PtLine(150,100,4700)
PtLine(200,100,4700)
PtLine(250,100,4700)
PtLine(300,100,4700)
};
#endif
#if (THERMISTORHEATER_0 == 1010) || (THERMISTORHEATER_1 == 1010) || (THERMISTORHEATER_2 == 1010) || (THERMISTORBED == 1010) // Pt1000 with 1k0 pullup
const short temptable_1010[][2] PROGMEM = {
PtLine(0,1000,1000)
PtLine(25,1000,1000)
PtLine(50,1000,1000)
PtLine(75,1000,1000)
PtLine(100,1000,1000)
PtLine(125,1000,1000)
PtLine(150,1000,1000)
PtLine(175,1000,1000)
PtLine(200,1000,1000)
PtLine(225,1000,1000)
PtLine(250,1000,1000)
PtLine(275,1000,1000)
PtLine(300,1000,1000)
};
#endif
#if (THERMISTORHEATER_0 == 1047) || (THERMISTORHEATER_1 == 1047) || (THERMISTORHEATER_2 == 1047) || (THERMISTORBED == 1047) // Pt1000 with 4k7 pullup
const short temptable_1047[][2] PROGMEM = {
// only few values are needed as the curve is very flat
PtLine(0,1000,4700)
PtLine(50,1000,4700)
PtLine(100,1000,4700)
PtLine(150,1000,4700)
PtLine(200,1000,4700)
PtLine(250,1000,4700)
PtLine(300,1000,4700)
};
#endif
#define _TT_NAME(_N) temptable_ ## _N
#define TT_NAME(_N) _TT_NAME(_N)