Introduction to the industrial control system and communication system of the main control system of the vending machine

1. Main control system 　　 The main control system is the brain of the vending machine itself, which controls the operation of all parts of the machine, including delivery mechanism, lighting, compressor, electric heating, buttons, cash module, and various detectors.　　 Before the Internet entered, vending machines operated in a pure master control system for decades. Fuji Electric's old-fashioned vending machine manufacturers have accumulated rich experience in this area. The current large-scale production model is based on the continuous improvement of the master control code of the past generations. Especially for the control of the sales process, the timing control of each component and the increasingly important energy-saving control, it has great advantages.　　 In recent years, with the entry of the Internet of Things and the Internet of Things, the original main control system is also facing updates and changes. The biggest change is the transfer and simplification of functions. In the past, many functions from host control have been transferred to industrial control and even to the cloud. Many manufacturers only install the control panel on the machine and send commands directly from the industrial control to the control panel.　　2, industrial control system 　　 industrial control system has application scenarios before the arrival of the Internet era, such as offline card payment, wired/Bluetooth printing, near-field data collection, screen product selection and so on. However, large-scale applications and outbreaks have developed rapidly after the Internet entered, from the earliest simple DTU (data transmission module) to electronic payment to various types of human-computer interaction.　　The main functions realized by the industrial control system are: various electronic payments, human-computer interaction interface, screen display control, data acquisition and reverse control, etc. At present, the mainstream industrial control operating system is Android, which accounts for more than 90%, and there are some WINODWS systems and LINUX systems.　　Industrial Control has now replaced the master control and has become the 'brain' of the new vending machine, controlling the sales process, payment, price setting of the goods, data storage and so on.　　3, communication system　　The communication system is particularly important in today's era of Internet of Everything. The current common perception is that each vending machine is regarded as an IoT terminal, connected to the world. On this channel, data is running, and communication between the vending machine industrial control and the cloud server is realized.　　All interactions must be safe and reliable. Security refers to ensuring that data is not stolen, tampered, or forged by means of terminal identity verification, data algorithm encryption, etc.; reliable, refers to ensuring that high-order equipment is always online, high-order concurrent processing capabilities, automatic migration of service failures, etc. . The current common practice is to rent cloud servers and adopt a more mature IOT architecture. Compared with self-built servers, it has many advantages and conveniences. (I have the opportunity to explain this in detail later). As for communication modules, most of them currently use 4G.　　 This article is organized by a vending machine, this article does not represent the point of view of this site Previous: Introduction to the structure of the vending machine control system