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Added redundant temp sensor

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This commit is contained in:
Erik van der Zalm 2013-05-26 17:57:49 +02:00
parent 7231a20dba
commit 9be61cdc02
4 changed files with 68 additions and 38 deletions
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6
Marlin/Configuration.h
View file

@ -88,10 +88,14 @@
// 55 is 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan) (1k pullup)
#define TEMP_SENSOR_0 -1
#define TEMP_SENSOR_1 0
#define TEMP_SENSOR_1 -1
#define TEMP_SENSOR_2 0
#define TEMP_SENSOR_BED 0
// This makes temp sensor 1 a redundant sensor for sensor 0. If the temperatures difference between these sensors is to high the print will be aborted.
#define TEMP_SENSOR_1_AS_REDUNDANT
#define MAX_REDUNDANT_TEMP_SENSOR_DIFF 5
// Actual temperature must be close to target for this long before M109 returns success
#define TEMP_RESIDENCY_TIME 10 // (seconds)
#define TEMP_HYSTERESIS 3 // (degC) range of +/- temperatures considered "close" to the target one

3
Marlin/Configuration_adv.h
View file

@ -367,5 +367,8 @@ const unsigned int dropsegments=5; //everything with less than this number of st
#undef BED_MAXTEMP
#endif
#if EXTRUDERS > 1 && defined TEMP_SENSOR_1_AS_REDUNDANT
#error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if EXTRUDERS > 1"
#endif
#endif //__CONFIGURATION_ADV_H

94
Marlin/temperature.cpp
View file

@ -40,10 +40,13 @@
int target_temperature[EXTRUDERS] = { 0 };
int target_temperature_bed = 0;
int current_temperature_raw[EXTRUDERS] = { 0 };
float current_temperature[EXTRUDERS] = { 0 };
float current_temperature[EXTRUDERS] = { 0.0 };
int current_temperature_bed_raw = 0;
float current_temperature_bed = 0;
float current_temperature_bed = 0.0;
#ifdef TEMP_SENSOR_1_AS_REDUNDANT
int redundant_temperature_raw = 0;
float redundant_temperature = 0.0;
#endif
#ifdef PIDTEMP
float Kp=DEFAULT_Kp;
float Ki=(DEFAULT_Ki*PID_dT);
@ -157,28 +160,28 @@ void PID_autotune(float temp, int extruder, int ncycles)
float Kp, Ki, Kd;
float max = 0, min = 10000;
if ((extruder > EXTRUDERS)
if ((extruder > EXTRUDERS)
#if (TEMP_BED_PIN <= -1)
||(extruder < 0)
#endif
){
SERIAL_ECHOLN("PID Autotune failed. Bad extruder number.");
return;
}
||(extruder < 0)
#endif
){
SERIAL_ECHOLN("PID Autotune failed. Bad extruder number.");
return;
}
SERIAL_ECHOLN("PID Autotune start");
disable_heater(); // switch off all heaters.
if (extruder<0)
{
soft_pwm_bed = (MAX_BED_POWER)/2;
bias = d = (MAX_BED_POWER)/2;
}
else
{
soft_pwm[extruder] = (PID_MAX)/2;
bias = d = (PID_MAX)/2;
if (extruder<0)
{
soft_pwm_bed = (MAX_BED_POWER)/2;
bias = d = (MAX_BED_POWER)/2;
}
else
{
soft_pwm[extruder] = (PID_MAX)/2;
bias = d = (PID_MAX)/2;
}
@ -196,10 +199,10 @@ void PID_autotune(float temp, int extruder, int ncycles)
if(heating == true && input > temp) {
if(millis() - t2 > 5000) {
heating=false;
if (extruder<0)
soft_pwm_bed = (bias - d) >> 1;
else
soft_pwm[extruder] = (bias - d) >> 1;
if (extruder<0)
soft_pwm_bed = (bias - d) >> 1;
else
soft_pwm[extruder] = (bias - d) >> 1;
t1=millis();
t_high=t1 - t2;
max=temp;
@ -250,10 +253,10 @@ void PID_autotune(float temp, int extruder, int ncycles)
*/
}
}
if (extruder<0)
soft_pwm_bed = (bias + d) >> 1;
else
soft_pwm[extruder] = (bias + d) >> 1;
if (extruder<0)
soft_pwm_bed = (bias + d) >> 1;
else
soft_pwm[extruder] = (bias + d) >> 1;
cycles++;
min=temp;
}
@ -264,14 +267,14 @@ void PID_autotune(float temp, int extruder, int ncycles)
return;
}
if(millis() - temp_millis > 2000) {
int p;
if (extruder<0){
p=soft_pwm_bed;
SERIAL_PROTOCOLPGM("ok B:");
}else{
p=soft_pwm[extruder];
SERIAL_PROTOCOLPGM("ok T:");
}
int p;
if (extruder<0){
p=soft_pwm_bed;
SERIAL_PROTOCOLPGM("ok B:");
}else{
p=soft_pwm[extruder];
SERIAL_PROTOCOLPGM("ok T:");
}
SERIAL_PROTOCOL(input);
SERIAL_PROTOCOLPGM(" @:");
@ -471,7 +474,19 @@ void manage_heater()
}
}
#endif
#ifdef TEMP_SENSOR_1_AS_REDUNDANT
if(fabs(current_temperature[1] - redundant_temperature) > MAX_REDUNDANT_TEMP_SENSOR_DIFF) {
disable_heater();
if(IsStopped() == false) {
SERIAL_ERROR_START;
SERIAL_ERRORLNPGM("Extruder switched off. Temperature difference between temp sensors is to high !");
LCD_ALERTMESSAGEPGM("Err: REDUNDANT TEMP ERROR");
}
#ifndef BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
Stop();
#endif
}
#endif
} // End extruder for loop
#if (defined(EXTRUDER_0_AUTO_FAN_PIN) && EXTRUDER_0_AUTO_FAN_PIN > -1) || \
@ -644,7 +659,9 @@ static void updateTemperaturesFromRawValues()
current_temperature[e] = analog2temp(current_temperature_raw[e], e);
}
current_temperature_bed = analog2tempBed(current_temperature_bed_raw);
#ifdef TEMP_SENSOR_1_AS_REDUNDANT
redundant_temperature =analog2temp(redundant_temperature_raw, 1);
#endif
//Reset the watchdog after we know we have a temperature measurement.
watchdog_reset();
@ -1145,6 +1162,9 @@ ISR(TIMER0_COMPB_vect)
#if EXTRUDERS > 1
current_temperature_raw[1] = raw_temp_1_value;
#endif
#ifdef TEMP_SENSOR_1_AS_REDUNDANT
redundant_temperature_raw = raw_temp_1_value;
#endif
#if EXTRUDERS > 2
current_temperature_raw[2] = raw_temp_2_value;
#endif

3
Marlin/temperature.h
View file

@ -37,6 +37,9 @@ extern int target_temperature[EXTRUDERS];
extern float current_temperature[EXTRUDERS];
extern int target_temperature_bed;
extern float current_temperature_bed;
#ifdef TEMP_SENSOR_1_AS_REDUNDANT
extern float redundant_temperature;
#endif
#ifdef PIDTEMP
extern float Kp,Ki,Kd,Kc;