RFID sensor networks with the Intel WISP

Abstract

We demonstrate a simple RFID sensor network comprised of an Intel WISP and a commodity UHF RFID reader. WISPs are devices that gather their operating energy from RFID reader transmissions, in the manner of passive RFID tags, and further include sensors, e.g., accelerometers, and provide a very small-scale computing platform. We believe that the small form factor and lack of battery makes the WISP an attractive alternative to motes for many of the original smart dust applications that require very small or long-lived sensors. The Intel WISP that we demonstrate has an ultra-low-power microcontroller, 32K of program space, 8K of flash, and accelerometer and temperature sensors. It harvests power from and communicates sensor data to standard (EPC Class 1 Gen 2) UHF RFID readers with a range of roughly 10 feet. This combination of RFID technology and sensor networks raises many research challenges, such as how to function with intermittent power and how to modify RFID protocols to support sensor queries.

A Parallel Identification Protocol for RFID systems

“…On one hand, even in a large scale RFID system with m = 10 6 and n = 100, the optimal value of L is only 500 obtained by the equations in Section V, then log m and L log L are still small values in PIP. On the other hand, many current RFID tags such as Intel WISP [1] and EnHANTs [5] adopt the MSP430 process with a frequency of 16 M Hz, which is far sufficient to perform the required mapping and encoding operations in PIP.…”

A Self-Adaptive Data Balance Protocol For Distributed Radio Frequency Identification Sensor Network

“…RFID-sensor network refers to a specific type of RFID network is comprised by a set of networked nodes with RFID as transponders and receivers with specific sensor [5]- [7]. Mostly, this type of RFID-sensing network is applied with many local subsystems embedded with tiny transponders and supports time-based one-way communication.…”

Using RFID for anti-theft in a Chinese electrical supply company: A cost-benefit analysis

“…RFID is one of the technologies representing a new way of doing business brought about by convergence in which computing, communications, and interactivity are available through a world of wireless, sensors, and network computing [3] [4]. RFID has the potential to enable machines to identify objects, understand their status, and communicate and take action if necessary, to create -real time awareness‖ [5] [6].…”