On-demand trade data queries

List of the table of contents of this article:

• 1 , How to design the vending machine scheme?
• 2 、How to make a vending machine circuit
• 3,On-demand trade data queries Vending machine control design
• 4, Object-oriented analysis design of your own vending machine

How to design the vending machine scheme?

1. A variety of schemes can be used to design a vending machine for a single-chip microcomputer. The following are some common schemes: the use of sensors and motors to control this scheme requires the use of sensors to detect coins and banknotes, and then the motor to release the product. It needs to adjust the sensitivity and accuracy of the sensor and ensure that the motor can release the product correctly.

2. Take the vending machine of the 6108 technical scheme to introduce automatic sales.Machine control technical scheme: APP (WeChat official account, applet) + vending machine (hardware development) + mobile payment system.

3. Design idea: input link, a. When inputting different banknotes or coins, there is a special identification instrument to set, and convert it into a digital signal and send it to the PLC's storage unit. When inputting, the addition operation is carried out to calculate the total amount.

How to make a vending machine circuit

Fake currency identification vending machine production method Today, I bring you a new type of vending machine. Let's not talk nonsense. First, the picture above It is the interior of the store, the groove in the middle is the coin port, and the item display column above represents the goods sold.

The first point is to make the overall framework of the fuselage. First of all, the workers welded the overall frame of the fuselage with a steel frame, and then installed other parts, such as transparent freezers and LCD advertising screens. Then there is the control panel of the vending machine. Connect the led screen and keyboard to the control panel and fix them with screws.

There is no specific requirement for what to put, as long as you like it.A red stone torch is placed at the top of the square, and automation can be achieved with power supply. Place the thrower against the red stone torch, and the launcher can be positioned at will, or it can also be facing the funnel. Such a simplest vending machine has been completed.

The vending machine is mainly composed of the body shell, the whole machine power supply, the lighting system, the payment system, the commodity channel, the refrigeration system, the interactive panel and the main control system.

Move the corresponding distance and locate it at the coordinate position of the desired drink. The bottle of the drink popped out and handed it to the robot, and the robot pushed out the drink. There are integrated circuits such as single-chip microcomputers in the vending machine, which can control the whole process of automatic sales, including identifying currencies, identifying beverage types, determining x-y coordinates, etc.

Control design of vending machines

Vending machines can view the distribution network through the APP, realize mobile payment through WeChat, Alipay, etc., and realize interactive cooperation with the media through the display screen, etc.

This scheme needs to adjust the sensitivity of the RFID reader and ensure that the motor can release the product correctly. Similarly, a single-chip microcomputer needs to be used to control the reader and motor.

Control requirements According to the process of the automatic control system of the vending machine, it can be known that the main systems of the vending machine include: coin counting system, comparison system, selection system, beverage supply system, coin refund system and alarm system.

Object-oriented of your own vending machineAnalysis and design

1. The S-shaped stacking channel is a kind of channel specially designed for beverage vending machines, which can sell all kinds of bottled and canned drinks. The beverages are stacked in the channel, and the storage capacity is very large. It relies on the gravity of the beverage itself to slide down to ship, which will not jam the goods, and it is convenient to replenish. The cargo port is controlled by the electromagnetic mechanism.

2. The earliest vending machine was designed by Hero, a Greek scientist in the Alexandrian era. The device he invented was used to apply holy water in the temple. This automatic holy water vending machine is a water bottle with a short outlet water pipe at the bottom. The water inlet of the pipe is in the pot.

3. In addition, there should not be too many kinds of goods in the vending machine, which is easy to increase the operating burden and may also cause inventory accumulation. Once there is too much inventory backlog, it will lead to tight funds.Consumer group analysis: As a merchant, you should first analyze the basic age and preferences of the surrounding people, understand their shopping needs, and then choose the corresponding products.

4. It is an object-oriented standard modeling. It is easy to express, powerful and universally used. It supports the whole process of software development starting from requirements analysis. Using the modeling mechanism of uml, various parts of large complex systems can be visualized.

5. From the analysis of the investment round of the vending machine industry, from 2018 to July 27, 2022, the investment in the vending machine industry was mainly early investment and strategic investment. There were 22 investment events in round A and before, and a total of 5 strategic investment events, accounting for the total investment and financing events. The proportion of is 910%.