摘要: 伴随着无线通信技术的飞速发展,射频技术越来越普及以及人们对智能化的要求更加高,从而导致中远距离的产生。本文主要介绍了中远距离RFID的技术优势和发展状况。详细介绍了中远距离射频的开发过程及相应的技术标准。
中远距离射频的基本的工作原理是利用C8051F320低功耗和NRF24L01射频收发芯片实现10米以内中远距离身份识别。当标签离终端十米以内时会发送一个密码就给终端,终端接收到时会相应LCD和PC上显示标签的主人详细信息。
关键词:中远射频 RFID NRF24L01 2.4G射频技术
Abstract: With the rapid development of wireless communication technology, radio frequency technology is becoming increasingly popular, and people demand more highly intelligent, resulting in the generation of long-distance. This paper describes the advantages of long-range RFID technology and development. Details the development process in the long-range radio frequency and the corresponding technical standards.
The basic long-range radio works is the use of low power consumption and NRF24L01 C8051F320 chip RF transceiver in the 10 meters distance identification. Less than ten meters away from the terminal when the tag will send a password give terminal, the terminal will receive the appropriate display label on the LCD and the PC owner for more information.
Keywords: COSCO RF RFID NRF24L01 2.4G RF technology
目前常用的射频自动识别技术中,条码磁卡的成本较低,但都容易磨损,且数量很小;接触式IC卡的价格高,数据的存储容量较大,安全性好,但也容易磨损,寿命短;而射频实现免接触式操作,应用便利,无机械磨损,寿命长,无需可见光源,抗污染能力和耐久性强,而且可以在恶劣环境下工作,对环境要求低,读取距离远,无需与目标接触就可以获得数据,无需重新制作新的标签,可重复使用,并且使用防碰撞技术,能识别高速运动物体并同时识别多个卡。