RFID代表射频识别,它是一种非接触式技术,广泛用于许多行业,用于人员跟踪,访问控制,供应链管理,图书馆书籍跟踪,收费站系统等任务。 2. 射频识别的工作原理 RFID系统由两个主要组件组成,一个应答器或位于我们要识别的物体上的标签,以及一个收发器或阅读器。 RFID阅读器由射频模块,控制单元和产生高频电磁场的天线线圈...
读取tag中的数据,首先要放到读卡器的读取范围内。读卡器会产生一个磁场,因为磁能生电由楞次定律,RFID Tag就会供电,从而激活设备 随后tag中的芯片进行响应,发送信号,将tag中存储的数据都发给读卡器。这种东西称为反向散射。 下面是关于RC522 RFID读/写模块相关的介绍 这个是NXP公司提供的。 该设备通过SPI(Serial Peri...
uint8_t getID() {// Getting ready for Reading PICCsif ( ! mfrc522.PICC_IsNewCardPresent()) { //If a new PICC placed to RFID reader continuereturn 0;}if ( ! mfrc522.PICC_ReadCardSerial()) { //Since a PICC placed get Serial and continuereturn 0;}tagID = "";for ( uint8_t ...
if ( ! mfrc522.PICC_IsNewCardPresent()) { //If a new PICC placed to RFID reader continue ...
pinMode(chipSelectPin,OUTPUT); // Set digital pin 10 as OUTPUT to connect it to the RFID /ENABLE pin digitalWrite(chipSelectPin, LOW); // Activate the RFID reader pinMode(NRSTPD,OUTPUT); // Set digital pin 5 , Not Reset and Power-down MFRC522_Init(); }void loop(){ uchar status...
void Rfid_int(){SPI.begin();//Init SPI bus rfid.PCD_Init();//Init MFRC522for(byte i=0;i<6;i++){key.keyByte[i]=0xFF;}}//实时获取新卡的信息 void Get_rfid(){//Reset the loopifno new card present on the sensor/reader.This saves the entire process when idle.if(! rfid.PICC...
Arduino代码–编写RFID标签 考虑到您已经成功读取了RFID标签,我们将继续进行下一个实验。下面的草图将对将自定义数据写入RFID标签进行基本演示。在开始详细分解之前,请尝试一下草图。 #include<SPI.h> //include the SPI bus library#include<MFRC522.h> //include the RFID reader library#define SS_PIN 10...
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The PCD is the actual RFID Reader based on the NXP MFRC522 Contactless Reader Integrated Circuit. Readers can be found on eBay for around USD 5: search for "rc522". You can also find them on several web stores. They are often included in "starter kits", so check your favourite electro...
RC522 RFID射频识别模块 IC卡感应模块 送ID卡、钥匙扣 淘宝 ¥6.50 去购买 2.接线 RC522 RST --> Arduino 9 RC522 SDA(SS) --> Arduino 10 RC522 MOSI --> Arduino 11 RC522 MISO --> Arduino 12 RC522 SCK --> Arduino 13 RC522 3.3V --> Arduino 3.3V RC522 GND --> Arduino ...