Frequently Asked Questions RFID Journal. What Is automatic identification What is RFID How does an RFID system work Are there any health risks associated with RFID and radio waves Why is RFID better than using bar codes Will RFID replace bar codes
The Council and the Hong Kong Accreditation Service will coorganise a Seminar on Support to the Testing and Certification Industry on 16 November 2017 Thursday. A SHORT HISTORY OF THE WORLD I THE WORLD IN SPACE THE story of our world is a story that is still very imperfectly known. A couple of hundred years ago men. A devastating heat wave surging through southern Europe has earned the unofficial moniker of Lucifer, according to several news reports this weekend. Things. If youve ever wondered how a photographer managed to capture the exact moment of an incredible end zone reception or the instant a bird takes flight, the answer. The Inhumans are a fictional race of superhumans appearing in American comic books published by Marvel Comics. The comic book series has usually focused more. Destroy All Humans Iso' title='Destroy All Humans Iso' />You can take your BMW M3 and piss right off because this Kia here, this 2018 Kia Stinger GT, looks like itll be a right good and proper sports sedan. And for a. Is RFID new If RFID has been around so long and is so great, why arent all companies using it What is the difference between low, high, and ultra high frequencies How do I know which frequency is right for my applicationDo all countries use the same frequencies Ive heard that RFID doesnt work around metal and water. Does that mean I cant use it to track cans or liquid products Whats the difference between passive and active tagsWhat is an Electronic Product Code How much information can the tag store Whats the difference between read only and read write tags What is reader collision What is tag collision What is the read range for a typical RFID tagAre there any standards for RFID Who are the leading RFID vendorsWhat are some of the most common applications for RFID Are any companies using RFID todayIve heard RFID can be used with sensors. Is that true What are intelligent software agents and how do they fit into RFID What is energy harvesting Will RFID lead to massive layoffs of workers What is Automatic IdentificationAutomatic identification, or auto ID for short, is the broad term given to a host of technologies that are used to help machines identify objects. Microsoft Clocks S. Auto identification is often coupled with automatic data capture. That is, companies want to identify items, capture information about them and somehow get the data into a computer without having employees type it in. The aim of most auto ID systems is to increase efficiency, reduce data entry errors, and free up staff to perform more value added functions, such as providing customer service. There are a host of technologies that fall under the auto ID umbrella. These include bar codes, smart cards, voice recognition, some biometric technologies retinal scans, for instance, optical character recognition, and radio frequency identification RFID. Back to Top. What is RFID Radio frequency identification, or RFID, is a generic term for technologies that use radio waves to automatically identify people or objects. There are several methods of identification, but the most common is to store a serial number that identifies a person or object, and perhaps other information, on a microchip that is attached to an antenna the chip and the antenna together are called an RFID transponder or an RFID tag. The antenna enables the chip to transmit the identification information to a reader. The reader converts the radio waves reflected back from the RFID tag into digital information that can then be passed on to computers that can make use of it. Back to Top. How does an RFID system work An RFID system consists of a tag, which is made up of a microchip with an antenna, and an interrogator or reader with an antenna. The reader sends out electromagnetic waves. The tag antenna is tuned to receive these waves. A passive RFID tag draws power from field created by the reader and uses it to power the microchips circuits. The chip then modulates the waves that the tag sends back to the reader and the reader converts the new waves into digital data. Back to Top. Are there any health risks associated with RFID and radio waves RFID uses the low end of the electromagnetic spectrum. The waves coming from readers are no more dangerous than the waves coming to your car radio. Back to Top. Why is RFID better than using bar codes RFID is not necessarily better than bar codes. The two are different technologies and have different applications, which sometimes overlap. The big difference between the two is bar codes are line of sight technology. That is, a scanner has to see the bar code to read it, which means people usually have to orient the bar code towards a scanner for it to be read. Radio frequency identification, by contrast, doesnt require line of sight. RFID tags can be read as long as they are within range of a reader. Bar codes have other shortcomings as well. If a label is ripped, soiled or falls off, there is no way to scan the item. And standard bar codes identify only the manufacturer and product, not the unique item. The bar code on one milk carton is the same as every other, making it impossible to identify which one might pass its expiration date first. Back to Top. Will RFID replace bar codesProbably not. Bar codes are inexpensive and effective for certain tasks. It is likely that RFID and bar codes will coexist for many years. Back to Top. Is RFID new RFID is a proven technology thats been around since at least the 1. Up to now, its been too expensive and too limited to be practical for many commercial applications. Pdf-Xchange Viewer Pro License Key Software. But if tags can be made cheaply enough, they can solve many of the problems associated with bar codes. Radio waves travel through most non metallic materials, so they can be embedded in packaging or encased in protective plastic for weather proofing and greater durability. File System Filter Driver Is Not Loaded. And tags have microchips that can store a unique serial number for every product manufactured around the world. Back to Top. If RFID has been around so long and is so great, why arent all companies using it Many companies have invested in RFID systems to get the advantages they offer. These investments are usually made in closed loop systemsthat is, when a company is tracking goods that never leave its own control. Thats because all existing RFID systems use proprietary technology, which means that if company A puts an RFID tag on a product, it cant be read by Company B unless they both use the same RFID system from the same vendor. But most companies dont have closed loop systems, and many of the benefits of tracking items come from tracking them as they move from one company to another and even one country to another. Back to Top. What is the difference between low, high, and ultra high frequencies Just as your radio tunes in to different frequency to hear different channels, RFID tags and readers have to be tuned to the same frequency to communicate. RFID systems use many different frequencies, but generally the most common are low around 1. KHz, high 1. 3. MHz and ultra high frequency, or UHF 8. MHz. Microwave 2. GHz is also used in some applications. Radio waves behave differently at different frequency, so you have to choose the right frequency for the right application. Back to Top. How do I know which frequency is right for my application Different frequencies have different characteristics that make them more useful for different applications. For instance, low frequency tags are cheaper than ultra high frequency UHF tags, use less power and are better able to penetrate non metallic substances. They are ideal for scanning objects with high water content, such as fruit, at close range. UHF frequencies typically offer better range and can transfer data faster. But they use more power and are less likely to pass through materials. And because they tend to be more directed, they require a clear path between the tag and reader. UHF tags might be better for scanning boxes of goods as they pass through a bay door into a warehouse. It is probably best to work with a consultant, integrator or vendor that can help you choose the right frequency for your application.