Design a soda vending machine, Mechanical Engineering

Design a soda vending machine that can deliver three kinds of soda, A, B and C. All the three soda cost the same amount - 70 cents. The vending machine has four coin slots, one each for nickel (N = 5c), dime (I = 10c), quarter (Q = 25c) and dollar (D = 100c). Coins are inserted into the machine one at a time in any order.

1918_Design a soda vending machine.png

The machine should take coins until 70 cents or more has been put in. When this occurs, the machine should wait for the choice of the soda A, B or C. After the choice is made, the machine is ready for vending. The machine should indicate vending by turning on one of the lines A_O, B_O or C_O for 1 second. During this time the machine cannot accept any coins. After 1 second, the machine is ready to accept coins again. The machine does not return any change. The machine should be a Finite State Machine (FSM) operating with a 100 Hz clock. The machine should have a reset input (R), which when pressed and released puts the machine in READY mode. Whenever this happens, the machine should display the total amount accumulated since last reset. Also, the internal amount accumulated is reset to zero cents.

You can assume that the soda cans are unlimited in number.

Write a VHDL code that implements the above soda machine. You have to turn in the following:
 
1. A state diagram showing the implementation of your design. Clearly show all the states and the conditions on which transitions occur.

2. Hardcopy of your VHDL code and the testbench.

3. Hardcopy of annotated waveforms that show at least the following cases:

(a) Normal operation of soda vending, showing the order in which the coins are inserted,  the state transitions and the vending process. Show that your machine does not accept coins when the machine is vending.

(b) Show the reset operation after a few sodas are vended, clearly displaying the total  amount accumulated and the state change.

Posted Date: 4/1/2013 5:37:44 AM | Location : United States







Related Discussions:- Design a soda vending machine, Assignment Help, Ask Question on Design a soda vending machine, Get Answer, Expert's Help, Design a soda vending machine Discussions

Write discussion on Design a soda vending machine
Your posts are moderated
Related Questions
importance of workshop in mechanical

Analyze motion of the two bodies connected by string: Analyze motion of the two bodies connected by string one of which is hanging free and other lying on smooth inclined pla

Motorcycle, we have learnt about the various parts of a motorcycle and their functions. Technical specifications of various models of motorcycles launched by the HHML were also not


Chassis Lubrication System : This lubrication system consists of outer body parts, which are lubricated from outside of the body. Table of Lubrication Points Sl.


OBJECTIVES OF VE: 1. To establishing the monitoring value of the function of the product or services. 2. To identifying unnecessary cost or hidden cost in a product or services.

Marshalling Yard: Function The marshalling yard is a facility where goods wagons are sorted out for being dispatched to different stations. After being sorted out, th

An experiment to determine the convection coefficient associated with airflow over the surface of a thick stainless steel casting involves insertion of thermocouples in the casting

Analytical Solid Modeling (ASM) ASM is closely related to finite element modeling. It is developed to aid designers in the arduous task of modeling complex geometry commonly fo