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At present, many government agencies, factories, mines, enterprises, public institutions, colleges, technical schools, and middle schools still use traditional meal ticket settlement methods that have been used for many years. This method is slow, easy to make mistakes, and has to spend a lot of manpower and material resources. Issuance and collection of meal tickets, and meal tickets carry a large number of germs in the repeated circulation process, which is very unhygienic.
To solve these shortcomings, our company launched a radio frequency card canteen sales management system. The system uses radio frequency cards to replace the meal tickets currently circulating in the canteen. Before going to the canteen to eat, diners pay a certain amount of cash as a pre-buy meal ticket. The canteen management department writes the amount, name, number, etc. into the user card; When you go to the canteen to have a meal, you only need to insert the card into the vending machine at each window, and the staff can input the amount used, and the vending machine will automatically subtract the corresponding amount. When the amount of money in the card reaches the specified minimum line, the window will be displayed on the screen and beep to remind the user to go to the designated place to add the amount in order to resume the use of the card.
The fifth-generation radio frequency card charging system is produced by our company after years of repeated development and practice. It is a modern catering charging system suitable for canteens in various industries.
The radio frequency card replaces the traditional meal ticket, avoids the waste of manpower, material and financial resources caused during the circulation of meal coupons, avoids the forgery and loss of meal coupons, eliminates the outflow of canteen benefits, cross-infection of germs and other disadvantages, and realizes finance Nissin month end. The use and promotion of radio frequency cards have played a huge role in promoting the modernization of logistics.
1. Introduction to RF Card Technology
Radio frequency card, also called non-contact IC card, was born in the early 1990s. It is a new technology developed in the world in recent years. It successfully combines radio frequency identification technology and IC card technology to solve the problem of passive (card The problem of no power supply) and contact-free is a major breakthrough in the field of electronic devices. Due to the incomparable advantages of photoelectric cards, magnetic cards and contact IC cards, one of them immediately attracted widespread attention after it came out, and it was promoted and applied at an astonishing speed.
The radio frequency card is composed of an IC chip and an inductive antenna, and is completely sealed in a PVC card with no exposed parts. The reading and writing process of the non-contact IC card is usually done by radio waves between the radio frequency card and the reader.
The radio frequency card itself is a passive body. When the reader reads and writes to the card, the signal sent by the reader is composed of two parts: one is the power signal, which is received by the card, and its own L/C Resonance is generated, and an instantaneous energy is generated to supply the chip to work. The other part is to combine data signals to instruct the chip to complete data, modification, storage, etc., and return it to the reader. The reading and writing system formed by the radio frequency card has greatly simplified the hardware structure and the operation process. At the same time, with the help of advanced management software, the offline operation mode makes the data reading and writing process easier .
Compared with contact IC cards, radio frequency cards have the following advantages:
1. High reliability: There is no mechanical contact between the radio frequency card and the reader, avoiding various failures due to contact reading and writing. For example: failure caused by rough card insertion, non-card foreign object insertion, poor contact caused by dust or oil stains, etc. In addition, there is no exposed chip on the surface of the radio frequency card, so there is no need to worry about chip falling off, electrostatic breakdown, bending damage, etc., which not only facilitates the printing of the card, but also improves the reliability of the card.
2. Convenient and fast operation: Due to non-contact communication, the reader can operate the card within 10cm, so there is no need to insert or remove the card, which is very convenient for users to use. When the radio frequency card is used, there is no directionality, and the card can be swept across the reader in any direction to complete the operation, which greatly improves the speed of each use.
3. Anti-collision: There is a fast anti-collision mechanism in the radio frequency card, which can prevent data interference between the cards. Therefore, the reader can process multiple radio frequency cards “simultaneously”. This improves the parallelism of the application and virtually increases the speed of the system.
4. It can be suitable for a variety of applications: The storage structure characteristics of the radio frequency card make it multi-purpose with one card and can be applied to different systems. Users can set different passwords and access conditions according to different applications.
5. Good encryption performance: The serial number of the radio frequency card is unique, and the manufacturer has solidified this serial number before the product leaves the factory and cannot be changed. A two-way verification mechanism is adopted between the radio frequency card and the reader, that is, when the reader verifies the legitimacy of the IC card, the IC card also verifies the legitimacy of the reader. The radio frequency card must be mutually authenticated with the reader three times before processing, and all data is encrypted during the communication process. In addition, each sector in the card has its own operating password and access conditions.Because the radio frequency card has the above incomparable advantages, it is very suitable for electronic wallets, automatic highway toll collection systems, canteen meal sales systems and bus automatic ticketing systems, etc.
2. Radio frequency card system parameters
The radio frequency card conforms to the international standard, the data storage period is 10 years, and the reading is unlimited. The radio frequency card does not have a power supply, comes with an antenna, and contains an encrypted control logic circuit and a communication logic circuit. The communication between the card and the reader adopts the internationally accepted DES and RES security cross algorithm, which has extremely high security performance.
working frequency:
Anti-collision: multiple cards can be processed at the same time. Slight reading distance: within 20MM (related to the shape of the antenna), data can be transferred conveniently and quickly
Half-duplex communication
In the process of wireless communication, the following mechanisms are used to ensure that the data is complete and support multi-card operation
Anti-collision mechanism: multiple cards can be processed at the same time, and sudden read or write or read-write interruption can be prevented when the card is processed. Dynamic read and write. When a card is processed, other cards can enter or leave the radio frequency The regional rapid anti-collision protocol adds only 1ms to the entire processing process for each additional card
Material: PVC
Size: in line with ISO10536 standard
Working temperature: 20°C to 50°C (humidity is 90%)
No battery: wirelessly transfer data and energy
Chip processing technology: using high-speed CMOSEEPROM technology
Components: a chip and a simple coil. Each security:
Mutual authentication (ISO/EC DIS97982)
All data during communication is encrypted to prevent signal interception
The serial number of each card is unique in the world
Typical transaction process <100ms
Three, working principle
The electrical part of the card is only composed of an antenna and ASIC, without other external components. Antenna: The antenna of the card is a coil with only a few sets of windings, which is very suitable for packaging in an ISO card. The working principle of the radio frequency card is: the reader sends a set of fixed frequency electromagnetic waves to the radio frequency card. There is an LC series resonant circuit in the card whose frequency is the same as the frequency emitted by the reader. Under the excitation of electromagnetic waves, The LC resonant circuit resonates, so that there is charge in the capacitor. At the other end of the capacitor, a unidirectional electronic pump is connected to send the charge in the capacitor to another capacitor for storage. When the accumulated charge reaches 2V At this time, this capacitor can be used as a power supply to provide working voltage for other circuits, transmit data in the card or receive data from the reader.
4. Confidentiality
The security performance of the radio frequency card is very good: three confirmations before reading and writing, a unique card serial number, and transmission data encryption.
Radio frequency card charging master control system
1. Financial management daily settlement
Database security is impeccable. The financial part of the rice-selling management software belongs to standardized financial software. The SQL2000 special database is adopted, the different encrypted storage of each data, the set check digit and the associated check of the database, completely eliminate the possibility of the financial staff to modify the database.
Project statistics are complete. Statistics on the business situation of the day or meal according to any period of time, and realize the functions of “same day settlement”, “business statistics”, “log retrieval”, “issue monthly supplement” and so on.
Easy to print, clear at a glance. Account opening, withdrawal, card replacement, error correction, monthly replenishment, and other statement vouchers and operating accounts for modifying account content in the management system can be counted immediately and printed quickly.
Transaction error correction, report records, safe and thoughtful. In terms of financial management, the management system software has set up an important error correction function, which solves the problem of only returning cash after the card is pulled out.
2. Super strong communication and system capacity
Powerful network communication makes the system run more smoothly. The communication rate of the computerized meal management system reaches 9600Bps, and the radius of the reliable communication relay network is 1.2 kilometers, which can be further extended through a repeater. The network operates in real time. A single computer can control 128 toll machines in real time. Multiple computers form a local area network to control more. It can realize large-scale optical fiber communication and use dedicated lines and telephone networks to achieve multi-zone networking.
The system capacity is designed according to the current Chinese national conditions, which is more in line with the reality of the canteen.The maximum registered capacity of the microcomputer meal sales management system for the canteen with radio frequency card is 60,000
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3. Software function
The system software is developed by DELPHI, Windows interface, simple, intuitive and clear operation, keyboard lock, mouse limit, prompt tracking, guide operation.
Run the windows environment, the environment is single, safe and reliable, easy to learn and understand.
Real-time operation, effective immediately. It has functions such as account opening (batch), account withdrawal (batch), loss reporting, unlinking, deposit, withdrawal, card replacement, account query, error correction, and account statistics.
Multi-password, multi-operator management. Only legitimate operators can perform cash-related operations such as account opening, deposit and withdrawal, and card replacement.
Flexible statistics, you can arbitrarily query and count the consumption accounts of each window/person for a meal, a day, and any time (such as: how much money is spent in which window on which day and time, and how much money is left in the account).
Statistics of the maximum meal amount, minimum meal amount and average meal consumption information can be calculated, which is very helpful for the unit to grasp the consumption level.
Meal subsidies can be set freely, and automatically entered on a monthly basis as required.
Management fees can be automatically added.
4 Technical scalability
The system software reserves the module interface, which is convenient for connecting to the enterprise network and establishing the enterprise all-in-one card in the future.
Multiple mainframes can be connected to a standard computer network on the basis of not reducing system performance, and at the same time connected to logistics and financial computers.
5 Monitoring function
It can be observed from the computer screen whether each toll collection machine is shut down and whether it is working normally.
The operator can find the fault point from the computer, and the maintenance staff can troubleshoot the fault accordingly.
You can learn more about the number of diners, total turnover, current transaction volume, daily turnover, total deposits and withdrawals, and other segmented data information of each window.
6 Security protection
There is a backup library in the database.
The software has perfect and breakpoint protection error automatic recovery function, so that data security is more guaranteed.
When the dining machine fails, it can automatically disconnect from the network without affecting the operation of the entire system.
UPS power supply means that the computer does not affect the normal operation of the system when the mains power fails or the power fails.
Work flow chart of IC card canteen selling meal management system:
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3. System composition
The radio frequency card microcomputer meal selling system consists of three parts: a computer control room, a circuit, and a window toll machine. The computer supporting equipment includes a computer, a printer and an uninterruptible power supply (optional). After the computer is connected to the network controller, it can control up to 128 radio frequency card charging machines in the network. After superposition, 256 toll machines can be controlled online, and the system software database can manage 60,000 people.
instruction:
1. The vending machine is placed at the vending window and operated by the cook.
2. The charging machine of the radio frequency card charging system is divided into two types: horizontal type and hanging type.
3. The radio frequency card is held by the diners, and the card is used for settlement when dining.
4. The network controller is connected to the RS232 interface of the computer and is responsible for the control of the terminal toll collection machine.
5. UPS power supply, which provides stabilized power supply for computers and toll collection machines at ordinary times. Provide uninterrupted emergency power supply in case of power failure.
Four, system explanation
1. What to do if there is a shortage of funds?
The advantages of using the radio frequency card microcomputer meal selling system are obvious to all, but some units hesitate to decide due to financial problems. In fact, the establishment of a radio frequency card microcomputer rice sales system does not require a lot of investment. As long as it works well, it can be established without investing money, and see the following analysis:
Since the radio frequency card microcomputer meal selling system is a partial credit card, according to credit card practice, a part of the credit deposit can be collected from the cardholder: this deposit is paid when the card is issued and returned when the purchaser resigns. However, the joining and graduation of students in the school are relative, so for the unit, this deposit will be a fixed amount of working capital. If 1,000 people charge 20 yuan per person, there will be 20,000 yuan in funds; and the cards in the system are sold to the purchaser, so if each card is charged 20 yuan, another 20,000 yuan in funds will be in place . And 40,000 yuan is basically enough for a 1,000-person unit to build a set of radio frequency card microcomputer meal sales system. What’s more, the radio frequency card microcomputer meal selling system is a system that can produce obvious economic benefits:
A. Plug up loopholes in the process of theft and loss of original vegetable tickets and cash circulation.
B. Improve the management level, save manpower, and speed up the speed of selling rice, thereby reducing costs and increasing revenue.
C. Objectively, the scope of consumption of employees is restricted to a certain extent, the drawbacks of meal tickets becoming “circulation currency” around the unit are eliminated, the opportunities for employees to eat in the cafeteria are increased, and the income of the cafeteria is increased.
D. As long as the interest-free capital turnover of the “credit deposit” is effectively turned around, good benefits will also be produced.
E. The annual card replacement will also bring a lot of income to the unit (the cost of the card is not 20 yuan). Therefore, basically, the unit can use the high-efficiency, convenient, and modern radio frequency card microcomputer meal selling system without investment. The advantages of using the radio frequency card microcomputer meal selling system are well-known, so that you can benefit from early use. According to the current user experience, the investment can be recovered in about two years after using the radio frequency card microcomputer meal selling system.
2. Can people who don’t understand computers operate it?
The most prominent feature of the RF card product software design is that it is intuitive, easy to learn and understand, and does not require professional computer knowledge. Of course, if you already have a certain basic computer knowledge, it will be easier to operate.
The window interface adopts windows style and has a rich cube graphic interface. You only need to stare at the screen and the system operation status is in front of your eyes. Each step of the operation has a special prompt, the interface color can be arbitrarily adjusted and matched according to the operator’s preference, allowing you to enjoy your eyes and work easily.
3. Regarding financial protection, how about the safety and reliability of the system?
The canteen selling meals involves a large number of people and large amounts of money, so the safety and reliability of the system is particularly important. The system has taken effective measures in terms of host operation security, account encryption, card encryption, etc., and has been further improved to keep improving.
4. If the host fails during the meal sale, how to ensure the normal operation of the system?
Since the meal vending machine can run independently from the host, even if the host or network fails, it will not affect the meal sales in the canteen.
5. How to avoid the operator’s misoperation from causing serious consequences to the system operation?
The system has enhanced prompts. Alarm function and add the function of rejecting wrong operation. For dangerous operations, the host will sound an alarm. In the software, the system fully closes the unused keys on the keyboard, and limits the scope of the mouse. Each key operation is confirmed before the host executes it. For some wrong operations, the host will refuse to execute and return to the initial state until the operation is correct, thus ensuring the reliable operation of the system.
6. How to avoid the personal behavior of operating sales personnel from a financial perspective?
The management of the operating personnel implements the password protocol. The operator needs a password (ie, password) to operate the host.
V. Indicator status of the radio frequency card rice selling system
1. Canteen vending machine
Product features of the canteen vending machine
1. Working mode: online/offline consumption mode
2. Consumption method: directly enter the amount/fixed consumption method/fixed consumption method
3. Number of cards: unlimited
4. Card standard: philips mifare1 and compatible IC card
5. Display mode: double-sided 10-digit LED digital display, displaying the balance in the card and the current consumption amount.
6. Data collection: background management, computer active collection and real-time monitoring collection
7. With encryption algorithm, issuance of card numbers, keys, and management functions
8. Communication method: RS 485
9. Blacklist download: support real-time download, download immediately after reporting the loss
10. With the ability to work independently on a single machine, it can continue to work even if the management machine is shut down or fails.
11. Comes with a backup battery, which can work in a mobile, and the longest working time can be more than 6 hours at a time.
12. Diverse styles, providing desktop and hanging styles and installation methods.
The main technical indicators of the canteen vending machine:
1. Program memory: 64K Flash ROM +32k RAM
2. Data memory: 256Kbit Flash
3. Offline storage data: 30000 items
4. Storage blacklist: 10,000 entries
5. Card distance: 3cm-10cm
6. Reading and writing time: less than 0.15 seconds
7. Data storage: more than 10 years
8. Communication interface: RS485 interface, RS485 communication rate: 9600bps
9. Appearance size: 323*174*135mm
Safety of the canteen vending machine
1. Machine initialization authentication: need to use the administrator system card and management password to authorize use
2. Transmission of collected data: Both data and address are internally encrypted in real time
3. Permission to use the card: only transactions are allowed if the permission of the card matches the permission of the set canteen vending machine
4. Card loss report processing: if the card is reported as a blacklist card, transactions cannot be carried out, and the blacklist is downloaded in real time
5. Total card consumption limit: limit the maximum total daily consumption of the card, and protect the cardholder’s interests to the greatest extent when the card is lost
6. Handling of improper card swiping: If the swiping card fails, the consumer POS machine will automatically lock the card, and you can swipe the card again to unlock it or go to the card center to unlock it.
7. Card expiration date: the card expiration date can be set to prevent overdue use
2. Card issuing machine
(1) No need for external power supply, easy to carry and safe
(2) Card issuance and deposit are integrated, saving costs.
Three, network controller
(1) At most 128 terminals can be connected, and the communication distance is 1.2KM
(2) With communication instructions, intuitive and convenient
(3) RS485 output
(4) Choose high-quality, high-voltage chips
(5) It can be used in various fields such as meal sales, attendance, remote industrial control, etc., without installation, plug and play
4. Software function:
1. Card operation
2. Library management function
3. Daily processing functions: online collection, card collection, library collection, loss reporting, cancellation reporting, data carry-over, monthly settlement, and annual settlement.
4. Data download: meal order window, download system parameters, download loss report, download menu, download date and time.
5. Report printing function: IC card information table, deposit schedule, personal consumption schedule, consumption analysis statistics table, loss report schedule, meal window statistics table, meal group statistics table, window machine sales table, window summary statistics table , Canteen sales statistics table, comprehensive summary table, fund balance table, recipe, accounting list, historical record table.
6. Data download
7. Window monitoring
8. System management
Five, after-sales service
Product quality assurance:
1) All computer products are manufactured in compliance with ISO9001 standards, and all electronic products are in compliance with national standards or corporate standards.
2) Our company’s products are all commissioned by Xuchang Xuji Electronics Co., Ltd. to process them on their behalf, and they are all produced by SMT and THT automated production lines, by no means manual welding.
3) Provide one-year free technical support and on-site service (except as agreed by both parties). After the free period, a service fee will be charged at the cost.If hardware products and product upgrades need to be charged, the actual costs will be incurred
4) After-sales service is provided for branded computers or products in accordance with the manufacturer’s requirements.
Technical Services:
1) Telephone and remote service within 4 hours.
2) 24-hour on-site service in Zhengzhou City; 48-hour on-site service in the province.
3) The service content mainly includes: equipment installation, debugging, test operation; technical consultation and system maintenance; equipment update, fault repair and system expansion and upgrade.
Training Services
Target: User-related technical and management personnel.
Location: According to the needs of the user, you can choose the location or our company designated by the user.
Company Address: South Section of Tianhe Road, Huiji District, Zhengzhou City
Tel: 0371—63787100/105/106/125 Fax: 0371-69137665 Yue Li 13255535915
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