How does RFID work?
What is RFID?
RFID is a wireless communication technology that uses electromagnetic field to automatically identify and track tags attached to objects. Unlike barcodes which require scanning, RFID tags can be read from a distance without direct contact.
The technology consists of two main components: an RFID tag and an RFID reader. The tag contains an antenna and a microchip that stores information, while the reader emits radio waves and receives signals back from the tag.
SPL RFID LINEN
The SPL RFID system integrates across our entire linen inventory, monitoring the lifecycle and health of each piece of linen from purchasing, through daily use, to final discard. It works by identifying and recording RFID tagged linen and laundry trolleys each time they pass an SPL calibrated RFID reader. This enables us to monitor linen quality, age, where it was last used and where it needs to go next, while also significantly improving traceability for health or quality purposes.
How RFID works
Electromagnetic Field Generation
The RFID reader creates an electromagnetic field sending radio waves through its antenna. This field extends outward from the reader, creating a ‘read zone’ where tags can be detected. At SPL we have multiple RFID readers at different points of the laundry cycle.
2. Tag activation
When an RFID tag enters the field, it becomes ‘energised’. The radio waves from the reader power the tag’s microchip .
3. Data transmission
Once activated, the tag’s antenna picks up the reader’s signal and responds by transmitting its stored data back to the reader. This data typically includes a unique identifier and any additional information programmed into the tag.
4. Signal processing
The reader receives the tag’s response signal, decodes the information and sends it to a connected computer system or database for processing.
How does RFID benefit your business?
SPL’s RFID System will assist in optimising your linen inventory, minimising spend and monitoring supplied linen quality and quantity against agreed standards. It will also enable a precise history of linen movement, improving reporting capabilities, demand forecasting and item traceability, which has become increasingly important.
Advantages of RFID Technology
Speed and efficiency: Multiple tags can be read simultaneously through RFID reads among various points of the laundry cycle.
Durability: RFID tags are typically more robust than barcodes, able to withstand harsh environments including moisture, chemicals and temperature extremes. Modern RFID chips designed for industrial applications can survive over 200 wash cycles with greater than 99% success rates, making them ideal for textile and laundry applications.
Automation: It enables automated data collection, reducing human error and labor costs. In commercial laundry services, RFID systems can automatically track linen movements, generate replacement orders, and maintain optimal stock levels without manual intervention.
Lifecycle management: RFID tags provide comprehensive tracking throughout an item’s entire lifecycle. For example, at SPL linen can be monitored from initial purchase, through daily use cycles to final disposal, providing valuable data on usage patterns, quality degradation, and replacement needs.