The vending machine work

The vending machine is based on input of coin machine automatically pay for the goods. Main components: the body shell, goods storage container, control the mainboard, COINS recognizer, sensors, the machine power supply and lighting system, refrigeration and heating system, Internet terminals, programmable controller ( PLC） 。 Among them, the most main is programmable controller ( PLC） , it coordinates the operation of the vending machine. Programmable controller with microprocessor as the core, the relay control system combined with computer technology, convenient and practical, easy to programming. PLC type diversity, PLC - - - - - - - CPM1A - V1 and AC100 - 220 v is widely applied to the vending machine. But these two kinds of models, good stability and compatibility is poor, difficult to adapt to the development of high and new technology. Specific shopping process is as follows: 1, the consumers will coin money ( COINS or paper money) For money, money recognizer identification. Detect counterfeit data record and spit out. After identification of 2, COINS, according to the amount, the customer keys of choose and buy goods. Amount is less than cannot buy goods accordingly. 3, sensor receives the key information, drive related parts. Goods were sent to pickup. 4, the customer may continue to buy or refund according to the balance. If customer no action in 15 seconds, the vending machine will automatically refund money. 5, customer pickup, complete the shopping