Design And Implement Of Vending Machine Wireless Monitoring System Based On GSM Communication

The appearance and wide use of vending machines makes convenience for people's shopping and good chance for the merchants. But the machines are always in malfunction, out of stock, and dispersing, which give the merchants difficulties in management. The successful use of GSM network in other fields also gives a good chance to solve these problems.This paper introduces a vending machine wireless monitoring system based on GSM communication. After analyzing the related techniques, this work gives the design of the system the hardware and the software. Then its performance is tested.This paper analyzes the structure of GSM network system, the basic principle of SMS and presents an ant colony algorithm in detail at first. Based on the GSM network transmission platform, the system transmits data through SMS. The use of ant colony algorithm in choosing best allotting path shortens the time of allotting and improves the efficiency.Then based on the requirement analysis of operation and management on vending machine industry, this paper presents the whole design of the system. The core part of the hardware includes TC35i GSM communication module and LPC2119 ARM chip. The terminal and the computer of supervisory monitoring centre exchange data each other through serial ports by controlling the communication module. The software part uses SQL as the background database. The supervisory monitoring centre is designed based on the platform of Visual Basic6.0 development environment. The short message service (SMS) system is designed on the platform of Keil uVision3.0, and the program is implemented written by standard C on ARM processor LPC2119.At the last part, the operation of SMS and the optimal allotting path is tested and simulated. The study shows that this system can meet the practical basic needs of the vending machine and has many advantages such as low cost, fast response and easy operation etc.