RFIDとは？ RFIDのしくみを解説
RFID Reader Basics
Basic InformationWhat Is an RFID Reader?
An RFID reader not only “reads” the code information on IC tags but also has a “write” function.
For this reason, it may also be called an “RFID reader/writer,” but both terms refer to the same device.
You may wonder, based on the name “reader,” whether it cannot write; however, in practice, most RFID readers support both reading and writing.
For this reason, it may also be called an “RFID reader/writer,” but both terms refer to the same device.
You may wonder, based on the name “reader,” whether it cannot write; however, in practice, most RFID readers support both reading and writing.
How It WorksBasic Structure of RFID Readers and Data Utilization
An RFID reader reads data from IC tags using radio waves. These radio waves are transmitted and received by an antenna built into the reader, and the reader’s control unit controls the antenna. The control unit manages the timing and output of the antenna’s transmission and reception of radio waves.
Data read from IC tags is sent to devices such as PCs and smartphones and processed by applications. For example, this data is used in a wide range of fields, including product management and inventory tracking.
Types and FeaturesRFID Reader Types and Features
There are various types of RFID readers depending on the intended use and installation location. The following are representative types.
Handheld Type
A portable RFID tag reading device. It is suitable for stocktaking, inventory checks, and on-site inspection work, and can be operated flexibly regardless of location. Some models can be used in combination with barcodes, significantly improving operational efficiency. Battery-powered operation also enables long hours of use.
Fixed Type
A device that is installed in a fixed location and automatically reads RFID tags. It can acquire information on passing items in real time without human intervention. It is ideal for traceability in logistics and manufacturing sites, as well as for inbound/outbound shipment management. Connecting multiple antennas enables reading over a wide area.
Tunnel Gate Type
A device that can batch-read RFID tags at high speed simply by passing boxes or packages containing products through a tunnel. It automates inspection and inbound/outbound operations, reducing work time and improving accuracy. It is ideal for labor saving and improving logistics efficiency. It is designed to accommodate large packages as well.
Walk-Through Gate Type
A gate-type device that automatically reads RFID tags simply as people, carts, racks, etc. pass through. Compared with the tunnel type, it is designed to accommodate even larger packages. It is ideal for traceability in logistics and manufacturing sites.
Wearable Type
A compact reader worn on the wrist, finger, etc. Because it can read tags while keeping both hands free, it improves the efficiency of picking and inspection work. It can be operated in accordance with workers’ movement paths, contributing to improved on-site productivity.