UHF making a big impact on manufacturing

RFIDUltra-High Frequency (UHF) RFID is quickly becoming the go-to identification system for flexible manufacturing lines around the world. While it was once considered to be a system designed primarily for distribution centers and retail stores, UHF technology has evolved to meet the rigors of the manufacturing environment.

Not long ago I was in a discussion with one of my customers who had been using RFID for almost 25 years. He was caught in a tough spot because he had an application which required reading tags from as little as six inches away to as far as two feet away. The HF system he had could easily meet his needs for the six inch read range, but reading at two feet away limited him to using UHF. When I explained that, his bewildered look indicated to me he was reluctant to consider UHF as a real option. He went on to explain that about ten years prior he conducted tests in his plant with UHF and found a host of limitations with the technology. His main concern was how the operators’ two-way radios interfered with the UHF operating frequency of 902-928MHz. Having heard this from other manufacturing organizations who were early adopters I knew right away that he wasn’t aware of how the technology has evolved over the last decade.

Frequency hopping has pretty much eliminated interference with other radio signals. In addition to overcoming radio interference, being able to read and write to tags which are mounted on or near metal and liquids has become a reality with recent advancements. These improvements have led to more flexible read ranges which are a requirement in today’s flexible manufacturing applications.

In a nutshell, the demands of flexible manufacturing have spurred advancements in the process as well as the supporting technology. As it applies to identification of parts or pallets in the manufacturing process, the flexibility of UHF RFID enables manufacturers to gain visibility in their process and provides actionable data that is used to make complex business decisions.

You can learn more about the technology in Balluff’s white paper, What Makes RFID Systems Industrial Strength? or by visiting our website at www.balluff.us

UHF RFID, One Size Fits All! – Really?

With the proliferation of UHF (ultra-high frequency) based RFID in the commercial and consumer markets, UHF has been seen as the mainstay now for many low-cost, long-range RFID applications. And in recent years with the desire for longer range application flexibility in the industrial sector, naturally users want to gravitate toward technologies and products with a proven track record. But can you really take the same products developed and used for the commercial and consumer logistics markets and apply them reliably to industrial applications like asset tracking, EKanban, general manufacturing or logistics?
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A Bolt For RFID

In many cases, RFID tags are only as good as the package that carries them. In recent years with the explosion in the use and acceptance of RFID, many different types of tag packaging have become available. In these cases, these new packages have been based around low-cost labels. But when it comes to the industrial use of RFID, strength and reusability are an absolute must and there is a package for that too.

Databolt examples.

This package is called the Databolt™. The Databolt is most likely what you might picture when you hear that name in reference to RFID. It is literally an industrial grade bolt with an RFID tag embedded inside. Usually the tag is located in the head of the bolt. The bolt body is usually made of a type of tooling steel which has been treated or hardened for maximum longevity. In several automotive applications today, the Databolt is screwed into a part, typically metal, programmed with data as needed and then erased and removed only to be taken back to the beginning of the process and used again. But there are new applications where a Databolt can be screwed into a part like an oil or gas valve, cylinder or plate as a bolt for example, and then used as a track and trace method for things like field servicing once the device is installed or in use.

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