RFID UHF porta la lettura dei marchi auricolari al livello successivo

I produttori di bestiame potrebbero risparmiare un bel po' di tempo e denaro, se sono disposti a passare dal marchio auricolare standard a bassa frequenza a una nuova alternativa ad altissima frequenza.

“Il tipico marchio auricolare a bottone esiste da molto tempo e funziona molto bene, ma è in uno spettro a bassa frequenza e la gamma di lettura è quindi molto, molto corto." disse Glen Kathler, cattedra di ricerca applicata del laboratorio di sviluppo di applicazioni di identificazione a radiofrequenza presso il Politecnico SAIT.

“With this ultra-high radio frequency technology, now you have a tag that you can read from up to 20 feet away, and you can also read more than one tag at a time.”

The Calgary school was approached in 2011 by Livestock Identification Services to see if there was technology to improve cattle traceability. LIS and the Canadian Food Inspection Agency were interested in things such as real-time tracking of cattle during transport and enhanced disease traceability when animals commingle.

“We looked at the whole supply chain, right from the producer all the way to the packing plant — with stops at the auction markets, the feedlots, and the transport companies — to see where some of the biggest gaps are,” said Kathler.

Ultra-high-frequency RFID tracking — widely used in areas as diverse as oil and gas, Tag RFID ad alta temperatura per la produzione industriale, and prisons — seemed like the way to go, not just for agencies like LIS but also producers. Kathler uses the example of a producer loading cattle or moving them to a new pasture.

“He could literally take something out of his saddlebag, stick it into a fence post for 20 minutes while he moved animals, and it would just read all of the tags of the animals going through the gate,” said Kathler.

“It’s very automated, and it simply creates a higher level of accuracy as opposed to trying to read something visually, as well as having to be so close to an animal that you can read a tag with a low-frequency wand reader.”

The technology would also be highly useful at auction marts for tracking animals from pre-sale pens through to loading. But it’s feedlots that stand to gain the most, he said.

“Just the ability to sort animals, to move animals, and to read tags without adding any additional stress by having them go through the squeeze chute was a big attraction for that particular market,” said Kathler, adding cattle are conservatively estimated to lose one per cent of body weight from stress each time they go through a squeeze chute.

“We showed that if you could eliminate even one of the trips through the squeeze chute to get its tag read, there’s a significant cost savings because there simply would be no stress on the animal. They don’t know they’re being read. They’re not being squeezed. They’re just being moved from one pen to another.”