Tags track, monitor shipments

May 25, 2006
RFID sensor tags from Savi Technology, Sunnyvale, Calif., monitor temperature and humidity of military and commercial shipments, including aircraft engines, ammunition, medical supplies, foodstuffs, and other perishables vulnerable to environmental conditions.

RFID sensor tags from Savi Technology, Sunnyvale, Calif., monitor temperature and humidity of military and commercial shipments, including aircraft engines, ammunition, medical supplies, foodstuffs, and other perishables vulnerable to environmental conditions. Users set acceptable temperature and humidity ranges, and the tags periodically record environmental data to an event log in tag memory. Should the data fall outside the acceptable range, tags send a real-time alarm to a fixed or mobile RF reader. From there the information travels via a Web application, cell phone, or e-mail.

The ST-673 and ST-674 sensor tags are roughly 6 2 in., store up to 128 kbytes of data, and are ruggedized for harsh environments. The ST-673 has a metal bracket for mounting on metal containers, engine frames, and the like. A sleeve on the ST-674 fastens the sensor inside plastic, cardboard, or wooden totes, or on containers and pallets.

The ST-673 and ST-674 add to existing active RFID sensor and security tags, including the ST-676 and ST-661. ST-676s have U-shaped design for clamping tightly to doors of ISO cargo containers. Embedded sensors detect door intrusions and light, temperature, humidity, and shock conditions inside a container. ST-661s are single-use security tags for detecting door intrusions of inter-modal containers.

All tags use the company's EchoPoint technology. It combines ISO 18000-7 standard UHF (433.92 MHz) and lowfrequency (123-kHz) communications for read ranges to 300 ft and more precise spot-level location. To date, the active RFID tags have tracked over 2 million shipments.

MAKE CONTACT
Savi Technology, www.savi.com

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