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Guide To Choosing RFID Types And How To Use Them – Radio Wave Detection System And Its Applications

Radio Frequency Identification (RFID) Radio Frequency Identification Is A Wireless Detection And Tracking Technology That Exchanges Information Between Labels Attached To A Product And A Reader. 

These tags contain information that is stored electronically. Passive tags receive the energy they need from the radio waves emitted by the RFID receiver. In contrast, active tags have an internal power supply (such as a battery) and can operate hundreds of meters away from the RFID receiver.

Unlike barcodes, labels do not need to be directly visible to the recipient to be embedded in the products to be tracked. RFID is one of the mechanisms for automatic detection and reception of data (AIDC).

Guide to choosing RFID types and how to use them

RFID tags are used in various industries. For example, an RFID tag can be attached to a vehicle under construction to track its manufacturing progress on the production line, or drugs with an RFID tag can track in various warehouses.

In general, AIDC is a method by which equipment, whether hardware or software, can read and recognize data without the human factor. RFID systems use electronic and electromagnetic signals to read and write data without contact. Commonly, any system that can read and identify information about people or goods is called an Identification System.

radio waves

The electromagnetic spectrum consists of different types of wave frequencies that are generated using electromagnetic energy. A radio wave is a disturbance in space that transmits power from one place to another. Radio waves are constantly oscillating so that the point is continuously increasing and decreasing as it moves.

This oscillation is typically represented as a wave pattern consisting of peaks (highest) and valleys (lowest level). The path traveled between the valleys, and the mountains are considered a complete wave cycle.

Radio waves are detected based on frequency and wavelength. The number of cycles that occur per second is also known as the rate of wave oscillation. The unit of measurement is the frequency of hertz, and one hertz equals one complete wave cycle per second, so the frequency depends on the speed of the wave oscillation.

Wavelength

In the RF spectrum radio subset, there are eight distinct frequency bands:

The wavelength gradually decreases, starting from the left side of the spectrum to the right. Very Low Frequency (VLF) is the first frequency on the left side of the spectrum, with an average wavelength of about 55,000 meters. In other words, the average distance of a VLF wave from one peak to the next (or from one valley to the next) is 55,000 meters.

Because radio wavelengths are related to data transfer speeds (i.e., the longer the wavelength, the slower the data transfer rate, and vice versa), the data transfer rate on VLF waves is meager. Therefore, VLF is not usually used for RFID applications. . Of the eight frequencies on the radio band, there are three frequencies commonly used for RFID applications:

Low frequency

Low frequency 

Uses

High Frequency

Uses

Higher frequency

Passive UHF RFID

Uses

Passive UHF RFID systems include hundreds of applications, including path tracking, product tracking, etc. Due to the low cost and convenient coverage of sending and receiving data, this technology is used in various forms in the industry (Figure below).

 Active UHF RFID

Uses

Software compatibility

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