Introduction:
Metal-detector technology is a huge part of our lives, with a range of uses that spans from leisure to work to safety. The metal detectors in airports, office buildings, schools, government agencies and prisons help ensure that no one is bringing a weapon onto the premises. Consumer-oriented metal detectors provide millions of people around the world with an opportunity to discover hidden treasures
Details:
A typical metal detector is light-weight and consists of just a few parts:
· Stabilizer (optional) - used to keep the unit steady as you sweep it back and forth
· Control box - contains the circuitry, controls, speaker, batteries and the microprocessor
· Shaft - connects the control box and the coil; often adjustable so you can set it at a comfortable level for your height
· Search coil - the part that actually senses the metal; also known as the "search head," "loop" or "antenna"
- Most systems also have a jack for connecting headphones, and some have the control box below the shaft and a small display unit above.
- Operating a metal detector is simple. Once you turn the unit on, you move slowly over the area you wish to search. In most cases, you sweep the coil (search head) back and forth over the ground in front of you. When you pass it over a target object, an audible signal occurs. More advanced metal detectors provide displays that pinpoint the type of metal it has detected and how deep in the ground the target object is located.
Metal detectors use one of three technologies:
· Very low frequency (VLF)
· Pulse induction (PI)
· Beat-frequency oscillation (BFO)
In my future blogs i will be posting all these technologies in detail...
so be in touch....
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