add filter

This commit is contained in:
interfisch 2023-04-09 20:33:45 +02:00
parent f1b4a26338
commit c63b4d01f0
2 changed files with 69 additions and 9 deletions

View File

@ -18,3 +18,4 @@ monitor_speed = 115200
lib_deps =
https://github.com/milesburton/Arduino-Temperature-Control-Library/
d03n3rfr1tz3/HC-SR04@^1.1.2
https://github.com/emilv/ArduinoSort/

View File

@ -1,5 +1,5 @@
#include <Arduino.h>
#include <ArduinoSort.h>
// ######## EC
#define EC_PIN_ADC 4
@ -48,6 +48,7 @@ float tempCmean_air[TEMPMEAN_SIZE];
#include <HCSR04.h>
#define HCSR04_PIN_ECHO 17
#define HCSR04_PIN_TRIGGER 16
#define HCSR04_TIMEOUT 5000 //default is 100000 (uS)
#define READINTERVAL_HCSR04 100
#define WATERLEVELMEAN_SIZE 32
@ -76,8 +77,11 @@ float getMean(uint16_t *parray,uint16_t psize);
float getMeanf(float *parray,uint16_t psize);
uint16_t getMin(uint16_t *parray, uint16_t psize);
uint16_t getMax(uint16_t *parray, uint16_t psize);
float getMaxf(float *parray,uint16_t psize);
float getMinf(float *parray, uint16_t psize);
bool isValueArrayOK(uint16_t *parray,uint16_t psize, uint16_t pcheck);
bool isValueArrayOKf(float *parray,uint16_t psize, float pcheck);
float getFilteredf(float *parray,uint16_t psize, uint16_t pcutOff);
void printAddress(DeviceAddress deviceAddress);
@ -96,7 +100,12 @@ void setup() {
ledcAttachPin(EC_PIN_FREQ, EC_PWM_CH);
ledcWrite(EC_PWM_CH, 127);
HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO);
//HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO);
HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO,HCSR04_TIMEOUT, HCSR04.eUltraSonicUnlock_t::unlockSkip);
for (uint16_t i=0;i<WATERLEVELMEAN_SIZE;i++) {
waterlevelMean[i]=-1; //-1 is also timeout value
}
//initialize mean array
for (uint16_t i=0;i<TEMPMEAN_SIZE;i++) {
@ -213,7 +222,6 @@ void loop() {
temperature=getMeanf(tempCmean_air,TEMPMEAN_SIZE);
}
double* distances = HCSR04.measureDistanceMm(temperature);
waterlevelMean[waterlevelMean_pos]=distances[0];
@ -236,9 +244,14 @@ void loop() {
if (loopmillis>last_print+500) {
last_print=loopmillis;
Serial.print("EC=");
Serial.print(getMean(ec_array,EC_ARRAY_SIZE),3);
Serial.print("\t spread="); Serial.print(getMax(ec_array,EC_ARRAY_SIZE) - getMin(ec_array,EC_ARRAY_SIZE));
if (isValueArrayOK(ec_array,EC_ARRAY_SIZE,0))
{
Serial.print("EC=");
Serial.print(getMean(ec_array,EC_ARRAY_SIZE),3);
Serial.print(" count (+- "); Serial.print( (getMax(ec_array,EC_ARRAY_SIZE) - getMin(ec_array,EC_ARRAY_SIZE))/2.0); Serial.print(")");
}else{
Serial.print("Waiting for EC");
}
if (isValueArrayOKf(tempCmean_reservoir,TEMPMEAN_SIZE,DEVICE_DISCONNECTED_C)){
Serial.print("\t Treservoir="); Serial.print(getMeanf(tempCmean_reservoir,TEMPMEAN_SIZE)); Serial.print("\t Tair="); Serial.print(getMeanf(tempCmean_air,TEMPMEAN_SIZE));
@ -247,8 +260,16 @@ void loop() {
}
if (isValueArrayOKf(waterlevelMean,WATERLEVELMEAN_SIZE,0)){
Serial.print("\t Dist="); Serial.print(getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE)); Serial.print("mm");
if (isValueArrayOKf(waterlevelMean,WATERLEVELMEAN_SIZE,-1.0)){
float _max=getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE);
float _min=getMinf(waterlevelMean,WATERLEVELMEAN_SIZE);
float _filteredWaterlevel=getFilteredf(waterlevelMean,WATERLEVELMEAN_SIZE,8);
float _meanWaterlevel=getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE);
Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((_max-_min)/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]");
}else{
Serial.print("\t waiting for distance");
}
@ -323,6 +344,28 @@ uint16_t getMax(uint16_t *parray,uint16_t psize) {
return max;
}
float getMinf(float *parray, uint16_t psize) {
float min=65535;
for (uint16_t i=0;i<psize;i++) {
if (parray[i]<min) {
min=parray[i];
}
}
return min;
}
float getMaxf(float *parray,uint16_t psize) {
float max=0;
for (uint16_t i=0;i<psize;i++) {
if (parray[i]>max) {
max=parray[i];
}
}
return max;
}
@ -341,3 +384,19 @@ void IRAM_ATTR isr_flow() {
flow_counter++;
flow_counter_sum++;
}
float getFilteredf(float *parray,uint16_t psize, uint16_t pcutOff) {
//cuts off lowest and highest pcutOff values from array, then returns the mean of the psize-2*pcutOff center values.
//pcutOff < psize/2
float _copy[psize];
std::copy(parray,parray + psize, _copy);
sortArray(_copy,psize);
double mean=0;
for (uint16_t i=pcutOff;i<psize-pcutOff;i++) {
mean+=_copy[i];
}
return mean/(psize-2*pcutOff);
}