Currency detector

Coin validator (also: coin ) are devices that sort coins according to certain specifications. They are used in machines to detect and weed out counterfeit money, foreign currency or unwanted coin values ​​.

Operation

Coin validator can test the coins on size, thickness, weight, depth of embossing, knurling and other material properties. Sort not only counterfeit money from, but also reject unwanted coin values ​​. Simple coin validator only conduct a pass-fail grading, complicated models can sort the coins adopted also by their value. Münzgeldwechsler collect accepted coins and enter it at the request of, for example, as change from. Instead of coins and tokens or tokens can be accepted.

Mechanical coin validator

The simplest mechanical coin is the coin slot. He can sort already on the size and thickness. Another simple form of a mechanical coin validator is the rotary lever in gumball machines. Mechanical coin validator can be defined during the build on one or more coin values ​​and can not be converted easily to another denomination. The coin validation by a mechanism does not allow to test the coins on so many parameters, as it is possible for an electronic coin validator. They are usually tested only by diameter, thickness and magnetic permeability, in more complex systems is via a rocker system also grading by weight possible. After the introduction of the electronic coin validator the mechanical coin acceptor were largely obsolete. A major application area for mechanical coin was a long time nor the cigarette machine, as this does not always have a power connector for an electronic coin validator. After coin acceptors were available with battery power, even this niche disappeared. Mechanical coin validator are still used primarily in slot machines, such as pinball machines.

Electronic coin

The first use of electronic coin validators took place in the ticket machine German Federal Railroad during the 1972 Olympic Games in Munich. These were a coin validator of National Rejectors (NRI ). Electronic coin validator can test a coin on more parameters than it is possible for a mechanical coin acceptor. In addition to diameter, thickness and weight can also Prägtiefe, the knurling or characteristics of the material from which the coin was minted, are reviewed. They also allow the adoption of more denominations than mechanical coin. Electronic coin are in contrast to their mechanical counterparts programmable, which means that the devices are easily programmed in various currencies. On modern coin validator also banknotes or cash card reader can be connected and they can control the machine in which they are installed, used partially or completely. Today, working with coin acceptor inductance. The coin slot and the rolling rail through the validator itself are constructed so that the throw rate has no influence on the measurement result. The coin validator itself the " arrival" of a coin is signaled by a light barrier. Directly behind this are two coils, which determine the type of coin by induction measurement. If the coin is accepted by the system, it is sorted by a mechanical or electromechanical sorting system in the hopper or the respective coin tube, or in the machine without returning function, the "money tank ". If the coin is not accepted, this is not allowed by an electromechanical system in the sorting mechanism. This will be returned usually have a return chute to the user

Euro changeover

A major challenge for manufacturers to coin was the conversion to euro coins. The manufacturer of coin acceptors were among the first who could work under strict security measures with the new euro coins. New electronic coin validator could be programmed to both the DM and the euro. You only had to be converted on the record date, some models did so automatically.