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  • Editing Team 16:16 on September 26, 2013 Permalink | Reply
    Tags: , RTLS, ,   

    Aerospace Company Uses RFID to Track Handsets for Safety Purpose 


    An aerospace company has piloted an RFID solution which uses GuardRFID’s active label, a 6-millimeter-thick, battery-powered 433 MHz tag small enough for monitoring individuals and assets in real-time location system (RTLS) applications.

    Since the work performed at that facility was highly sensitive, staff members or contractors entering specific areas were required to leave their mobile phones in a locker or other location outside the secured area.

    To solve this problem, GuardRIFD developed a new tag which comes with a battery, a motion sensor and a temperature sensor and is small enough to be affixed to the back of a cell phone. The built-in motion sensor enables the tag to be read more frequently when the object to which it is attached is moving, but less often when stationary, thereby extending the battery life.

    If an individual forgot to remove a phone from his or her pocket upon entering through the door, the exciter awakened the phone’s tag, which began transmitting its ID number. The reader received that ID and forwarded it to the software, which not only stored that event data but also triggered an alarm to be sounded by the doorway’s audio device, thereby reminding the individual to remove his or her phone and store it outside the secured area.

  • Editing Team 18:34 on July 23, 2013 Permalink | Reply
    Tags: , , , RTLS   

    What Are the Differences Between RTLS and RFID? 

    RTLS stands for real-time location system. An RTLS is any solution that can tell you where an asset, individual, vehicle or other object is located, in real time.

    RFID stands for radio frequency identification. Many real-time location systems employ active RFID technology. The active tags are set to send out a signal every few seconds or minutes (depending on how near to real time you want the information to be) and antennas pick up those signals. Software then uses triangulation or other methods to calculate each tagged object’s position.

    There are also real-time location systems that utilize other technologies. Sonitor offers a solution that uses active tags that transmit ultrasound signals instead of RF signals. One difference between ultrasound and RFID is that sound waves do not penetrate walls the way electromagnetic energy does. So if you wanted to know whether an object was located within a specific room, ultrasound systems could tell you that. With an RFID system, it can sometimes be difficult to determine if an asset is on one side of a wall or another.

    There are also RTLS solutions that use infrared, a line-of-sight technology that can tell you where an object is located—but if that item is in a drawer or under a blanket, the system will not function. In many cases, infrared and active RFID are combined, in order to provide the benefits of being able to read through walls, as well as more precise location information when needed.

    GPS technology, when integrated in a tag that includes some sort of transmitter (such as a cellular radio) to communicate a tagged object’s identity and GPS coordinates, could be considered an RTLS technology, though most people do not refer to it as such.

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