Hello everyone,
I'm a senior electrical engineering student. For my senior project I need to build a metal detector with certain requirements. One of the requirements is that the detector shall have no need for re-calibration in order to function properly.
At least most of detectors that I have seen while doing the research for this project needed some form re-calibration from time to time, usually by adjusting potentiometers. I have a few questions about detectors and their need for recalibration:
1) Are there any types of detectors that do not require calibration from time to time?
2) Why do certain types of detectors require calibration?
3) Are there ways to mitigate the need for detectors to require calibration to some degree?
Addition requirements for the detector are:
1) Must distinguish between ferrous and non-ferrous metals
2) Must run using an alkaline 9V battery
3) Must be safe for use by children ages 5-11
Any answers to my question above will be a huge help.
Currently my team is thinking of using a BFO for the project. It will be based off of the detector described in the following URLs:
https://www.embeddedrelated.com/showarticle/911.php
https://www.embeddedrelated.com/showarticle/914.php
Thanks in advance!
-Kyle
I'm a senior electrical engineering student. For my senior project I need to build a metal detector with certain requirements. One of the requirements is that the detector shall have no need for re-calibration in order to function properly.
At least most of detectors that I have seen while doing the research for this project needed some form re-calibration from time to time, usually by adjusting potentiometers. I have a few questions about detectors and their need for recalibration:
1) Are there any types of detectors that do not require calibration from time to time?
2) Why do certain types of detectors require calibration?
3) Are there ways to mitigate the need for detectors to require calibration to some degree?
Addition requirements for the detector are:
1) Must distinguish between ferrous and non-ferrous metals
2) Must run using an alkaline 9V battery
3) Must be safe for use by children ages 5-11
Any answers to my question above will be a huge help.
Currently my team is thinking of using a BFO for the project. It will be based off of the detector described in the following URLs:
https://www.embeddedrelated.com/showarticle/911.php
https://www.embeddedrelated.com/showarticle/914.php
Thanks in advance!
-Kyle
