[51] Measuring the Engine Rpm through Inductive pickup sensor by arduino

[chamanali]

I used below attach Ciruit for inductive pickup coil but a problem is coming to measure the rpm.when i start my motorcycle then arduino does not measure the pulses and it become a blind, does not work..when i keep the inductive coil far from the sparkplug wire then it takes the pulses.
please help me what i do for it.

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REply it fastttt

 

[milan.rajik]

EMI hanging microcontroller?

 

[Golden Electronics]

I used below attach Ciruit for inductive pickup coil but a problem is coming to measure the rpm.when i start my motorcycle then arduino does not measure the pulses and it become a blind, does not work..when i keep the inductive coil far from the sparkplug wire then it takes the pulses.
please help me what i do for it.

- - - Updated - - -

REply it fastttt

U can isolate input & also refer my link

https://www.edaboard.com/threads/308995/#post1324364

 

[chamanali]

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Code C++ - [expand]
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int rpmcount = 0; 
 
 
int rpm = 0; 
 
 
unsigned long lastmillis = 0; 
 
 
void setup(){ 
 Serial.begin(9600); 
 attachInterrupt(0, rpm_fan, FALLING);
 
 } 
 
 
void loop(){ 
 
 if (millis() - lastmillis == 1000){ //Uptade every one second, this will be equal to reading frecuency (Hz).
 
 detachInterrupt(0);//Disable interrupt when calculating
 
 rpm = rpmcount * 60; // Convert frecuency to RPM, note: this works for one interruption per full rotation. For two interrups per full rotation use rpmcount * 30.
 
 Serial.print("RPM =\t"); //print the word "RPM" and tab.
 Serial.print(rpm); // print the rpm value.
 Serial.print("\t Hz=\t"); //print the word "Hz".
 Serial.println(rpmcount); //print revolutions per second or Hz. And print new line or enter.
 
 rpmcount = 0; // Restart the RPM counter
 lastmillis = millis(); // Uptade lasmillis
 attachInterrupt(0, rpm_fan, FALLING); //enable interrupt
  }
 
 } 
 
 // this code will be executed every time the interrupt 0 (pin2) gets low.
 
 
void rpm_fan(){ 
  rpmcount++;
 
 }

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i used this program to take inputs from the inductive pickup coil..but i am so much worry.. arduino measues automaticaly values when i start the motorcycle without keeping the inductive coil on sparkplug...but i kept the coil on sparkplug then arduino does not work.it blind

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this is hardware of inductive pickup sensor i have mad

 

[Golden Electronics]

I don't about ur areduino to much & inductive pick up coil also.With coil if u kept ur hardware near spark plug then also display show blank. if this is case than u should kept away from spark plug & check display.

 

[chamanali]

I don't about ur areduino to much & inductive pick up coil also.With coil if u kept ur hardware near spark plug then also display show blank. if this is case than u should kept away from spark plug & check display.

yes u are right.when i kept away coil from the spark plug then comes output...in this way my sensor will get values of the other nearby running bikes...i want i round the coil on spark plug then it takes only values of my motorcycle........
give me the solution

 

[Golden Electronics]

Can u use isolated input as ur all post show that too much noise or high voltage spike generate which blank display

 

[chamanali]

how i isolate input
this is my input sensor and coil
i am so worried

 

[Golden Electronics]

I already post link on which post 3 have circuit diagram u cal follow it. In my case I isolate output in ur case u isolate input signal of coil