How bently nevada proximity sensor works
The following was submitted on February 20th, 2007 at 08:07AM (PST).
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You have asked the same question in many forums. I found that while searching on the internet. That means you still have doubts.
See the website related to your question bently.com see this page too bently.com/bnc/ourheritage.htm
Microwave - RF radiates energy.
You know when a magnet is moved near small nails it make them Move ! If you make an DC electromagnet it make the nails move again.
But when you keep swapping the polarities, That is with an AC supply it generates a field or radiates an energy. Right from the Toy generator with magnets to the Sun it is the same. The highest form of sun is it radiates photons.
RF is nothing but a Magnet rotated at high speed which is called frequency. This energy can cause food to cook in your microwave oven or a proximity sensor to gauge the gap. It even helps people when the have a sun bath.
I have seen even an old Analog Joystick of a Machine has this induction method to position objects.
Study Links below for helping you understand better.
RF-Energy
RF Identification from Atmel - The RFID tag derives its power from the RF reader signal and does not require a battery or external power source.
The National RFID Centre - Passive tag that derives all its power necessary for its operation from the field generated by the interrogator.
Discover Exactly How A Microwave Oven Works - A detailed, illustrated explanation.
Microwave oven - Wikipedia, the free encyclopedia - MadSci Network An unusual way to learn how microwave ovens work. "Microwave Cookbook" Great ideas of what to cook in a microwave.
Microwave Ovens - . Everyone knows how to use a microwave oven, but do you know how it works?
Electricity meter - Wikipedia - An electric meter or energy meter is a device that measures the amount of electrical ... motor of a type called a reluctance motor or eddy current motor.
Applications of electromagnetic induction - An eddy current is a swirling current set up in a conductor in response to a ... and to provide the necessary energy required for the motor to do work.
Eddy Currents - Yet another interesting use of the Eddy current drag force effect is found in the electric meter that measures the amount of electricity being used in your house.
Old School Proximity Sensor Implementation - How it works. Inductive proximity sensors generate a magnetic field from their detection faces. Whenever a detectable object moves into the sensor's field
Design of an Eddy-Current Proximity Sensor using a Two-Coil Planar ... .However these proximity sensors are not conducive to scaling to conventional integrated circuit levels. This is because most conventional eddy current
Proximity sensors design Inductive proximity sensors generate an electromagnetic field and detect the eddy current losses induced when the metal target enters the field.