Automated coin segregator and counter

• Main Authors: Cervantes, Jose Paolo V., Factora, Karen Anne, Tumacder, Juan Paolo, Sison, Jose Laurence
• Format: text
• Language: English
• Published: Animo Repository 2005
• Subjects: Coins; Sorting devices > Automatic control
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/14521
• Institution: De La Salle University

Banking in the Philippines today is a 3.4 trillion-peso industry. It is vital to our economy that our banks provide effective and efficient service. It is also essential that they provide total satisfaction to their patrons. One of the problems of the service of banks is the management of coins. Up to now, major banks still use manual sorting of coins or require clients to sort their coins before depositing them. This is a time-consuming task that requires personnel who could be doing something else. Automation may provide solution to this problem. Automated coin sorters and counters do exist. However, they do not satisfy the needs of the Philippine market. Existing designs classify coins by diameter and thickness. The current 5-centavo and 1-centavo coins are identical in both aspects. The only difference lies in the 5-centavo coin having a hole in the middle. On the other hand, the 10- and 5-peso coins have almost identical diameters. This leaves a technological gap to the existing coin sorters and counters being used by the Philippine banking system. The machine works by first separating the coins into five groups (1-centavo and 5-centavos, 10-centavos, 25-centavos, 1-peso, and 5-peso and 10-peso) mechanically through a sorter disc. The 10-centavo, 25-centavo, and 1-peso coins are counted by a fibre-optic sensor placed at the sorting hole of these coins. An inductive sensor detects if the 1-or 5-centavo coin has a hole at the center, and solenoids push the coins to their proper sorting destinations. A color sensor senses the color of the outer part of the edge of the 5- and 10-peso coins. Solenoids are also used to sort them. From the results of the experiments, the machine is found to have a maximum percentage error for sorting at 5.24%, and a maximum percentage error for counting at 7.14%. The machine may be inaccurate, it is still found to be within the theoretical acceptable margin of error at 10% for a sample size of 100. The machine was able to sort current circulating Philippine coins into each of the seven denominations and count the coins per denomination at an acceptable accuracy.