Design And Implement Of Information Wireless Loading System Based On NFC

Wireless transmission of information is widely used in many fields, such as the gun before the launch of the data binding, in order to be able to hit the target, will need a variety of data binding to the weapons. Data binding is the traditional way to wire binding, binding need to plug cables will affect the binding time. In order to improve the binding rate, meet the batch binding, quick launch requirements, wireless binding method can greatly improve the efficiency. The effective information input device integration solution, a handheld reader so close to load information into account, is simple and efficient, this paper is to design a system with such an information wireless binding implementation.To achieve the wireless transmission of information in a variety of techniques and methods, this paper introduces the short distance wireless communication technology(NFC) is a kind of application. NFC technology by RFID(Radio Frequency Identification) is the development of radio frequency identification technology evolved, not only compatible with RFID chip at the same frequency, but compared with more powerful. Is the reader and the tag of the main RFID/NFC system. In this paper, the reader is the main control chip is STM32F103 VE, RFID/NFC read and write chip CR95 HF, can support multiple protocols including ISO15693; label using wireless M24LR64 memory chip embedded in handheld devices. In this paper, a handheld device as a source of information, which can be replaced at any time card information as to. Handheld device with STM32F103 VE microprocessor as the core, connected to the M24LR64 chip, the chip works in 13.56 MHz frequency, the label storage capacity reached 8K bytes, the chip is a dual interface chip microcontroller through the I2 C bus, the STM32 data will be stored in the chip, the card reader through the CR95 HF wireless communication information will be read out from the M24LR64, wireless in order to achieve the binding information.This paper introduces in detail the design and implementation of NFC information wireless binding system of SCM STM32F103 VE, RFID/NFC read and write CR95 HF chip and ISO15963 protocol of electronic tags based on M24LR64. The system consists of two parts, respectively is the handheld device and a card reading device, which details the connection circuit and data storage procedures in the handheld device tag the card reading device to read and write RFID/NFC chip CR95 HF connection circuit and wireless communication driver, at the same time, this paper designs the good human-computer interaction interface, can be clearly revealed by the result of communication. It is worth mentioning that we have prepared to read and write RFID/NFC chip CR95 HF driver for NFC Forum Type 4A label, expands the communication function of RFID/NFC. Experiments show that the binding information, wireless system designed in this paper can be stable for wireless data communication, can complete the corresponding read / write operation, has low power consumption, large capacity, good stability and the read and write.