RFID solutions in Pakistan (Radio Frequency Identification) technology identifies objects by sending a unique ID over radio waves (UID). The two most critical components of this system are RFID tags and RFID readers. It might be a sticker, a plastic card, a keychain, or even put under the skin, as in the case of animals.
There are RFID solutions in Pakistan tags that can only be read. The identifier is written on the labels during the manufacturing process. A read-only RFID tag’s unique identification number (UID) cannot be modified.
There are, however, a number of RFID tags that can be read and written on. RFID scanners, such as the RC522, can read and write these types of tags, allowing you to update your data. In practice, however, this component is capable of both reading and transmitting data across radio frequency.
RFID’s Various Applications
The power of the RFID reader and tag varies. An RC522 module must be connected to an electrical network in order to function. What about radio frequency identification tags, on the other hand? What is the best way to feed these cards?
RFID tags, in general, do not require batteries or other forms of external power. RFID-enabled cards are useless. They are predicated on the operational notion of induction. The most prevalent type is a passive RFID system. To remove the electromagnetic field that allows electrons to travel through the chip, it must be charged.
The RFID tag’s data can then be transmitted via radio frequency between the powered chip and the RFID tag. Backscattering is a natural phenomena. In this case, the data is transmitted to a computer or a microcontroller using Arduino software.
RFID categories are classified into three types
RFID tags and readers, unlike radios, must be tuned to the same frequency in order to communicate. A radio frequency identification system can work on a wide range of radio frequency frequencies. Between the extreme low frequency (ELF) and infrared bands is the radio frequency spectrum.
Based on how frequently they run, systems are classified into three types
- The abbreviation LF stands for long-term friendship (125-134 KHz)
- High Frequency (HF) (13.56 MHz)
The radio spectrum does not behave uniformly. This implies the selection of an acceptable frequency for our purpose.
RFID (radio frequency identification) systems that operate at a low frequency
Low-frequency RFID solutions in Pakistan applications have a longer wavelength than high-frequency RFID applications and can penetrate deeper into thin and metallic surfaces. Because of its low frequency, low-frequency RFID scanners can also be used to scan items with a high water content, such as fruits and beverages.
It merely only a few millimetres of width. RFID tags have limited memory capacity due to delayed data transfer and high manufacturing expenses.
Low-frequency RFID has two applications: access control and animal tracking.
RFID systems with a high frequency of operation (HF)
These work well with metals and other materials that require a medium to high water flow rate. These RFID systems have a maximum reading range of one metre. They, like NFC, use global standards and protocols, but have larger memory capacities and slower data transmission rates.
RFID (radio frequency identification) systems with extraordinarily high frequencies of operation.
The range of ultra-high-frequency RFID is greater than that of both low-frequency and high-frequency RFID. We’re talking about measurements ranging from a few millimetres to more than 20 metres. They can also scan data quickly (several labels per second), which is useful in some applications.
This technology is used in a variety of applications, including tracking warehouse products, counting people, monitoring race results, and regulating tolls and parking lot access.
RFID Reader built with the Arduino RC522
The MFRC522 RFID reader module is the brains of the RC522 RFID reader module. Typically, the device comes with an RFID credit card and an RFID keychain. The cards’ memory can be partitioned into sectors and blocks of 1K or 4K bytes. The RFID reader module RC522 is also capable of writing RFID tags.
The RC522 RFID scanner’s 13.56 MHz frequency is utilised to generate an electromagnetic field. It can cover a maximum distance of 35 cm.
This module’s interrupt pin is especially significant. Because the module detects the existence of an RFID tag via a pin, the microcontroller may be actuated rather of continually asking the RFID reader RC522, saving time and money.
The operating voltage ranges from 2.5 to 3.3 volts. This means it works with the vast majority of microcontrollers, including the Arduino.
The good news is that the logic levels are 5V compatible, thus it can be used with any Arduino or microcontroller that runs on 5V.
The complete specifications from the spec sheet are as follows:
RFID RC522 components are commonly found in RFID systems. RC522 RFID reader with power supply It can be powered by a power supply ranging from 2.5V to 3.3V. RST: This pin is used to turn the module on and off. If the pin is in the LOW position, it will remain off and save electricity. When the RC522 is in the HIGH state, it restarts automatically.
The IRQ interrupt pin is engaged when an RFID tag approaches the RC522 RFID reader. MISO / SCL / TX: Depending on the configuration, the SPI interface can be utilized as both a slave and a master output when enabled.
MOSI: An entry for SPI in the MOSI database
SCK is the SPI interface’s clock. The following signals are received when SPI is enabled: SS, SDA, and RX. Two such devices are the Arduino UNO and the RC522 RFID reader.
It is difficult to programmer the communication between the Arduino and the RC522 RFID reader. The availability of ready-made Arduino tools, such as the Grove Beginner Kit for Arduino industradgroup, which includes 10 sensors and 12 programmers, is a blessing.
DumpInfo will be run first and foremost. This program me does not save any data to the RFID tag. Read the RFID tag and display the data on the serial monitor as soon as it is received, if possible.