Coin Change Machine

Coin Change Machine

Coin Change Machines are devices that streamline currency exchange, transforming large bills into smaller denominations and coins. These change machines can be found in diverse locations like golf ranges, retail stores, car washes, correctional facilities, and even zoos.

These change machines use advanced sensors to count and sort coins, based on their denomination. Assessing their capacities, features, and security ensures optimal performance.

Input Sensors

There are a number of different types of sensors used in a coin change machine. The most common are optical and mechanical. These sensors sense coins and other objects to determine whether they are valid and have been inserted correctly. Some sensors can also detect if certain types of contamination such as staples or elastic bands are present in the machine.

Other types of sensors are designed to discriminate between different coins based on parameters such as their size, metal composition and the presence of plating or magnetic non-magnetic characteristics. These sensors can be quite expensive to manufacture, fabricate and maintain.

The invention described herein relates to a sensor arrangement capable of sensing the different diameters of coins in a singulated stream of coins moving along a coin path. The sensor arrangement includes a movable member displaced from a first position to a second position by passage of the largest-diameter coin in the coin stream. The movable member actuates the sensor arrangement to signal the presence of the largest-diameter coin to the coin mech or vend controller.

Bill-Input Slot

An integral bill validation and change system allows a slot machine player to continue playing without having to leave the game or wait for a casino employee to provide the necessary change. The system determines winning game plays for the slot machine and whether or not to pay out coins based on a particular bill denomination inserted into the bill input slot of the bill validator unit 12. An LED block display 42 comprises currency displays 46 and quantity displays 48 which are controlled by the master processor of the slot machine.

Coin-counting machines are typically located at banks, grocery stores and some supermarkets. They are also available at some financial institutions such as community credit unions, which tend to have more personal Coin Change Machine customer service. Many of these machines charge a fee to use them, but some don’t.

The bill-input slot of the bill validator unit opens a door 58 and lid 62 when a bill is deposited into the slot of the bill validator unit. A monitoring switch 108 senses the opening of the bill-input slot and signals the CPU 64 to update values in the RAM 82 which represent present coin hopper levels.

Stacking Chamber

Unlike the older change machines that simply dumped all coins in a jumble dump into a container, modern change machines sort and pack each coin in order of its denomination before dispensing it. They can even weigh each coin to ensure that it has a certain amount of weight and that it is not counterfeit or tampered with.

These machines also have sophisticated computer controls that control the machine’s functions, relay information from input sensors and provide user instructions on an illuminated 40-character LCD panel. Moreover, they are widely used in diverse locations like casinos, arcades, retail stores, car washes, and laundromats to streamline the bill-to-coin process.

To do this, the leading end of a sheet of wrapping paper fed from a wrapping paper supplying device enters a clearance between the cylindrical surface of the coin stack and the wrapping rollers 81, 82 and 83 as they rotate. Thereafter, a pair of Sports Game Machine crimping hooks are introduced toward upper and lower portions of the coin stack to fold and crimp inwardly projecting edges of the wrapping paper to tightly wrap the coin stack.

Coin Discriminator

The coin discriminator on a Coin Change Machine is a key component that recognizes, validates and accepts the various coins, tokens or other items that typically represent value and trigger the operation of controlled devices such as vending machines and access control turnstiles. The discriminator compares a deposited coin to a reference coin held in the apparatus, detecting whether or not the characteristics of the deposited coin (such as diameter and thickness) are within a predetermined range.

It also detects and rejects counterfeit or damaged coins, or a coin that does not have the proper dimensions. The device may be equipped with one or more coils that produce an alternating electromagnetic field and a set of detectors that are responsive to the change in attenuation of energy of the deposited coin as it passes through stages of alignment with the coils. A set of nulls or peaks occurs between these signals and the microprocessor is able to identify the varying characteristics of each of these sets.

Electromagnetic (eddy current) sensors with corresponding signal processing provide a relatively simple, precise and efficient method for coin recognition and validation. However, acoustic resonance sensors and image processing can sometimes be more effective [1].

Pay Out Device

Bill-to-Coin Changers, Token Dispensers and Ticket Machines are essential for many businesses that need to process cash, especially those in the hospitality industry like casinos or laundromats. Designed for maximum security, these devices can handle bills of various denominations, accept credit cards and dispense coins of different values, as well as tokens.

One common issue with coin dispensers is the tendency for the bottom coin of a stack to prematurely tip and become jammed between the moveable plate and lower end of the coin stack supporting collar. The invention eliminates this problem by providing a payout mechanism wherein the bottom coin is stably supported until it is completely clear of the coin stack before being released to freely fall into the magazine.

The payout system of a Coin Change Machine contains a number of hoppers that are separated by denomination, with each hopper capable of holding specific coin denominations. Most machines require three hoppers (for quarters, dimes and nickels), but some incorporate as many as eight. Each hopper has an inventory counter connected to a coin counting device to record the total amount of currency received by the machine each time it processes a transaction.

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