How do machines know that a coin be inserted and what features of coin is it?
Answers: The elder type of vending machines recognises the coins by weight and size, but not the core of a coin. That's why sometime back within Germany the authorities encountered problems beside people using Polish coins that have been file at the edges and used in place of the more sensible German 1 deutsche mark coins on vending machines. Most of the modern vending machines at the moment test a coin by the current that flows through the coin's metallic properties besides the mass and size. These machines are in use contained by Japan(a vending machine haven) to prevent culture from using Korean 500 won coins and passing them rotten as the similarly sized Japanese 500 yen coins which are about 9x the expediency of the Korean coin but made of different metallic composition. The Japanese also had matching problem as the Germans at one time.
The size and weight.
a special coin separating moving parts is installed to the vending machine..it does not own sensors thing similar to that, it is a very simple contruction of slot type which segregate the different types of coins inserted in to it..
These machines are programmed to adopt different coins which are determined by the weight of the coin. Lets speak you were going to buy a tabloid from a vending stand, and the price is 35 cents. The machine would adopt 1 quarter + 1 dime, or 1 quarter + 2 nickles, 3 dimes and one nickle, or any combination that comes out to 35 cents. They will NOT accept pennies. The size/weight of the coin is "read" by the contraption. If you put the wrong coins in, they will slop right through. Hope this clears this up for you.
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