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MEMS cvičenie 2: Rozdiel medzi revíziami

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(Vytvorená stránka „1. Look-up table #include <avr/pgmspace.h> const PROGMEM int table[] = {11,12,15,...}; Viac info tu: https://www.arduino.cc/en/Reference/PROGMEM 2. Po častiach li...“)
 
Riadok 1: Riadok 1:
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* Návod na cvičenia:
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* Príklad na pripojenie analógového senzora: http://ap.urpi.fei.stuba.sk/sensorwiki/index.php/Acrob007
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* Riadiaca doska Acrob http://ap.urpi.fei.stuba.sk/sensorwiki/index.php/Acrob
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* Arduino homepage https://www.arduino.cc/
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<source lang="cpp">
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#define SerialSpeed 9600  //typical values are 9600 or 115200
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#define SampFrequency 10  //sampling frequency in Hz (cycles per second)
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#define positionSensor 5        //define your pin here
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int mDelay;
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int adcValue;
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float outputValue;
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void setup()
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{
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Serial.begin(SerialSpeed);
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mDelay = 1000/SampFrequency; //calculate delay for proper sampling rate
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}
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void loop()
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{
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adcValue = analogRead(positionSensor);
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/*  =============================================== */
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outputValue = adcValue;  // replace this line with your code
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/*  =============================================== */
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Serial.print( outputValue ); //reads the analog port and prints value over serial
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Serial.print('\r');
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delay(mDelay); //delay in milliseconds
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}
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</source>
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1. Look-up table
 
1. Look-up table
  

Verzia zo dňa a času 14:08, 13. február 2017

  • Návod na cvičenia:



#define SerialSpeed 9600   //typical values are 9600 or 115200
#define SampFrequency 10   //sampling frequency in Hz (cycles per second)
#define positionSensor 5        //define your pin here
 
int mDelay;
int adcValue;
float outputValue;

void setup()
{
 Serial.begin(SerialSpeed);
 mDelay = 1000/SampFrequency; //calculate delay for proper sampling rate
}
 
void loop()
{
 adcValue = analogRead(positionSensor);
 /*  =============================================== */
 outputValue = adcValue;   // replace this line with your code 
 /*  =============================================== */
 Serial.print( outputValue ); //reads the analog port and prints value over serial
 Serial.print('\r');
 delay(mDelay); //delay in milliseconds

}



1. Look-up table

#include <avr/pgmspace.h>
const PROGMEM int table[] = {11,12,15,...};

Viac info tu: https://www.arduino.cc/en/Reference/PROGMEM

2. Po častiach lineárna náhrada

if (adcValue > x1) && (adcValue <= x2)
  y = k2 & adcValue + q2;
return(y)

3. Aproximácia funkcie


Odovzdať:

  • Chyby podľa EN 60 770
    • Nepresnosť
    • Meraná chyba
    • Nelinearita
    • Hysteréza
    • Neopakovateľnosť
  • Graf 1: prevodová charakteristika
  • Graf 2: chybové krivky (viď obr.)
  • Program pre mikroprocesor

Example2-1.png


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