Hello,
I am a beginner who started working with circuits and microcontrollers recently. I am doing a project on IR proximity sensor.
I have started with a basic proximity sensor circuit available in internet. But i couldn't achieve long range with that sensor. So, I came to know that i can improve the range and efficiency of the Ir sensor if a modulate it to a particular frequency.
My Hurdles:
How to modulate the Ir led to 56Khz using a PIC18f4550 mcu (program and explanation)
how should i connect a bandpass filter in the reciever circuit(with appropriate res and cap values so as to allow only 56khz signals), amplifier to amplify the signal. {explanation with circuit diagram would be of great help}
Please dont mind to explain me in detail as i am new to this field. so, It takes some time for me to understand the working of the circuit or program.
Any kind of help would be appreciated
Regards,
Varun
I am a beginner who started working with circuits and microcontrollers recently. I am doing a project on IR proximity sensor.
I have started with a basic proximity sensor circuit available in internet. But i couldn't achieve long range with that sensor. So, I came to know that i can improve the range and efficiency of the Ir sensor if a modulate it to a particular frequency.
My Hurdles:
How to modulate the Ir led to 56Khz using a PIC18f4550 mcu (program and explanation)
how should i connect a bandpass filter in the reciever circuit(with appropriate res and cap values so as to allow only 56khz signals), amplifier to amplify the signal. {explanation with circuit diagram would be of great help}
Please dont mind to explain me in detail as i am new to this field. so, It takes some time for me to understand the working of the circuit or program.
Any kind of help would be appreciated
Regards,
Varun