Food vending machine in canteen in Pudong District, Shanghai

1. Introduction to the canteen card swiping machine system and advantages of the canteen card swiping machine system
Proximity card, also known as contactless card, has the following technical characteristics:
High security (double authentication password)
High reliability (the card has no moving parts, no battery)
High anti-interference
Operating distance
Size is like a standard credit card
Contactless: means that the card can be read and written There is no physical contact between the readers. This will not cause damage to the card or the reader.
Fast and extremely short operation time, radio operating frequency 3. Exchange, according to the rate B/second, the operation of each card Time.Seconds
Different areas are strictly separated in the multi-purpose chip of a card. Each application occupies one area and can accommodate up to 1 application
It is precisely because of the above technical characteristics of contactless cards that they are used in In the canteen charging system, it shows the following unique advantages:
There is no mechanical movement and no mechanical failure, which greatly reduces the maintenance costs and maintenance personnel caused by poor contact of contact cards or magnetic cards.
Since the contactless card meal vending machine is fully enclosed and the contactless card chip has no exposed parts, it will not be affected by traces of oil and water in the canteen.
Read and write, no need to access the computer, independent offline use, stand-alone statistics, especially suitable for canteen charging requirements.
Integrate reading and writing in the same operation, truly functioning as an electronic wallet.
High reliability, strong anti-interference and high sensitivity.
High confidentiality and strict management of authorization system codes. After each card reader is authorized, the system can specify that the card can be used on a certain meal vending machine when issuing a card.
The reading and writing process is completed instantly, and the operation speed is very fast. The charging operation time of each card is <. second, which is very convenient for food sellers and employees.
The card can be written in different ways, such as: personal information, date, time, charging machine number, charging amount, balance, etc., and settlement, statistics, and card amount can be deducted in different ways at the same time.
Contactless cards are mainly used as stored-value cards. The cards operate in the form of turnover cards, and cardholders pay a deposit to purchase the card.
One card can be used for multiple purposes. In addition to selling meals, it can also be used for access control, attendance, shopping, etc.
Based on the above characteristics, the contactless card meal sales system has been rapidly promoted as soon as it came out, and it is the development direction of scientific canteen management in the future.
Basic functions of the canteen card machine system
The system mainly consists of stored value cards, meal vending machines, card issuance systems, meal vending management systems, etc. Its basic functions are as follows:
Anyone who holds Cardholders of meal cards sold through this system can use their cards to purchase meals at restaurants for any amount within the amount stored on the card. The amount of consumption is automatically deducted through the rice vending machine at the rice selling window. Every time the rice is sold, if it is a set meal or a portion of rice, the rice salesperson does not need to do anything. If it is a payment by volume or a small stir-fry portion, the rice salesperson needs to After inputting the amount of food purchased, the cardholder places the food vending card on the antenna of the food vending machine, and the charging operation is completed within seconds. The display will show the current amount of money on the card and record the amount of money consumed. When there is not enough money on the card, the food vending machine can send out an alarm to notify the cardholder to add money to the card in time.
When creating a new card or adding money to the card, you only need to give the money, and the financial staff can write the amount into the card through the authorized reader and record it. The procedure is simple, highly accurate, shortens the time for selling meals, and is also more hygienic, overcoming the shortcomings of the traditional method of selling meal tickets. The system has a built-in statistical function, which can count and view the current number of users, consumption amount and other data at any time. At the same time, the system can also automatically record and store the time, amount and card number of each meal sale according to user requirements, and can also according to user requirements. The format is printed out in the form of a report, which can be used as a reference for performance appraisal of restaurant sales staff and cost accounting for food input.
The system is equipped with the function of reporting the loss of meal cards. If a smart card or a card from an external company is used fraudulently, the toll collection machine will automatically alarm, prompting the staff to confiscate the card, and can refund the full amount of the reported loss to the person who reported the loss. people. The system has a specific password double encryption function to prevent the circulation and use of cards other than the unit's, and can also prevent any form of overdraft and meal card forgery, and is highly secure. All major components are imported from abroad and undergo strict testing and screening to ensure the reliability of the system.
It can be used both as a stand-alone machine and as a networked device. The charging machine does not need a computer and can directly operate the smart card. When the operation status is automatically stored and needs to be connected to the Internet, just plug the network interface into the expansion port of the charging machine.
Available for both AC and DC power. The toll collection machine's built-in backup power supply can continuously supply power for more than one hour, and it can work even if there is no mains power.
Large amount of information storage. The number of transaction records stored in the machine can reach more than 3,000, and the storage time can last for several years. Transaction records can be retrieved at any time. Display on both sides. One side faces the staff and the other side faces the consumers. Both sides display the same content and have power, charging mode, remaining value, and consumption value indicators.
Suitable for a variety of consumption methods. There are many options to choose from including card and cash, card and cash, and a mix of card and cash, making the machine convenient and flexible to use. It can be used not only as a smart card charging machine, but also as a general cash register.
A variety of charging methods are applicable.
The unit price method is the commonly used charging method based on the starting price unit.
The dish number format is to organize the dish names into dish numbers and calculate the prices, which facilitates recipe analysis. This machine can store up to 6 dish types.
The fixed-value pricing method uses each package as the pricing unit. Especially suitable for restaurants that serve meals or fast food.
Remember this formula, which means that you can only brush once or several times per meal or day, and the statistics are also based on the number of times.
2. Design principles for canteen card swiping machines
When designing the contactless card-based meal vending system, we adhere to the principles of advancement, practicality, safety, reliability, openness and scalability of the entire system. Fully consider the various specific requirements and circumstances of users, and strive to reduce costs as much as possible while satisfying the prerequisites of various functions.
Advancedness
Ensure that the equipment and technology used are mainstream products in the world, occupy a large market share, and are in a leading position in the country in terms of card.
Practicality
The performance indicators, storage and processing requirements of the entire system can meet all application functions proposed by the user. The entire system must be convenient and practical for users, and easy for managers to operate and manage.
Security and Reliability
The hardware equipment used in the system has high security and reliability, the software has high security and confidentiality, data can be backed up, and system maintenance is easy. The card uses a logically encrypted storage chip to ensure the security of users' personal information and financial use.
Openness
The system should have good openness. The hardware equipment in the network and the computer system connection protocol comply with international standards. The system software development process is strictly controlled, and the operating system, database, and development tools adopt mainstream products.
Scalability
The entire system structure has good expansion capabilities. Attendance machines and charging machines can be expanded at any time as needed. The software is modularly built to facilitate expansion and upgrades.