Radio frequency identification technology is one of automatic identification techniques. By radio frequency mode, non-contact bidirectional data communication, using radio frequency mode to read and write record media (electronic tag or radio frequency card), to achieve identification targets and data exchange purposes, It is considered to be one of the most developed information technology of the 21st century. RFID is very wide, typical application has animal wafers, automotive wafers, access control, parking lot control, production line automation, material management. Eight RFID applications, master this skill together.
1, based on RFID RF module RC522 RF card development application
The MF522-AN module uses the Philips MFRC522 original chip design read card, applied to high integration of high integration in 13.56MHz non-contact communication, is a low voltage, low cost, low cost, "three tables" applications for NXP. Small non-contact read and write card chips. The module uses a voltage of 3.3V. You can directly connect communication with any CPU motherboard with the user through the SPI interface. You can ensure that the module is stable and reliable, and the card is far away;
https://www.cirmall.com/circuit/1344
2, single-chip RFID IC card access control system (circuit + simulation + program)
Function status description:
1. Single-chip + button + IC read-write module + DS1302 + LCD1602 LCD design
2. The liquid crystal can display the current time in real time, so that the user is used, with the power-off time function.
3. You can add or delete the memory function of the IC card, so that users are more flexible.
4. With the dual prompt function of the indicator and buzzer, the green light indicates that the red light indicates that it is prohibited.
5. Relay simulates electronic lock, closed state is an unlocking state, and it is indiscriminate.
https://www.cirmall.com/circuit/9491
3. Design based on RFID non-contact temperature measurement instrument
In response to the inconvenient, accuracy of the contact detection temperature in life, industrial production, the application range is small, the application range is strict, and the design plan for the wireless RF temperature measurement system is proposed. The design idea and implementation method of the non-contact temperature test system is described in detail, and the design principle of each part of the circuit is specifically analyzed, and the design procedures of each part are described in detail. The RFID non-contact temperature test system consists of three parts of the temperature acquisition portion, the data wireless transmission section, and communication. The temperature acquisition portion utilizes the single-chip STC89C51 as the control center, and the acquired temperature value is sent to the microcontroller for data processing by using a line-like digital temperature sensor DS18B20; the data wireless transmission portion uses RFID technology-based wireless radio frequency transceiver chip NRF2401, through software configuration Wireless high speed transmission of data.
https://www.cirmall.com/circuit/5929
4, single-chip RFID IC card access control system (DIY011)
Function Description:
1. Can read the identity information of the entry person through the IC card (identity information is: labor number, role [is administrator])
2. Can determine whether or not access or quasi is determined based on the person information read
3. Can record the information of the person to enter and export, the recording content includes starting frames (0xf1, 1byte), time (1Byte), reservation (2byte), reservation (2byte)
4. Can realize the upper and lower get off work card functions, the card is set, give it late, early retreat
5. The menu can enter the card access control function when there is no operation, the personnel add, card record query, time and card time settings
6. Personnel to delete, card record query, time and card time setting function After selecting password authentication, enter the operation, otherwise automatically exits
7. When there is no operation, 1602 shows the current time. When there is a card, it will display the current card's entry record with the upper and lower get off work, and the time can be powered.
https://www.cirmall.com/circuit/8822
5. Based on STM32 smart door lock circuit solution (RFID + keyboard + fingerprint + OLED)
STM32-based smart door lock design has been made.
The main function:
1. Support fingerprint, password, RFID unlock
2. Support delete, modify users, save power (Flash Simulation EEPROM)
3.4x4 matrix keyboard, OLED display, all the second relay control switch door, buzzer alarm, LED light prompt
https://www.cirmall.com/circuit/18542
6, based on STM32F103 single-chip RFID intelligent supermarket cash register checkout design
This design based on radio frequency identification technology (RFID) supermarket fast checkout system design can not only reduce the actual time of checkout, but also reduce the perceived time of customer checkout through the design of the styling and space of the checkout, so that the accounting is a fast and beautiful shopping. Experience. After analyzing the research technology research of supermarkets at home and abroad, this paper proposes a supermarket fast checkout system based on RFID video technology. The RFID information installed in advance was quickly obtained by RFID reader, which rapidly was quickly statistics to the price of goods, which quickly andd quickly, and it was very convenient for shoppers.
https://www.cirmall.com/circuit/11360
7. Based on STM32 single-chip smart RFID card car bit lock design [full information]
This design is composed of STM32F103C8T6 single-chip core board + LCD1602 liquid crystal display circuit + RFID module circuit + button circuit + relay circuit.
1. Relay simulates the parking lock switch (similar to the front of the vehicle), and the closure does not allow other vehicles to enter in the normal case, and if the card success relay is disconnected, the vehicle will enter.
2, after the vehicle is entering, the button will open the relay again, open the car, so that the car is locked in the parking space.
https://www.cirmall.com/circuit/14604
8, based on 51 single-chip RFID access control system design (source program + schematic + BOM table)
The system is composed of STC89C52 single chip circuit + RFID sensor module + LCD1602 liquid crystal display circuit + relay circuit + button circuit + power circuit circuit.
1. Read the card information via the RFID MC522.
2, by the button can be card number, delete the card number, with the power-down no loss function.
3. If the information of the card number is entitled, the relay is closed, otherwise the relay does not operate (the relay is default).
4. After the relay is closed, it can be disconnected by pressing the button.
https://www.cirmall.com/circuit/15734
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