140:. To an RFID reader, a WISP is just a normal EPC gen1 or gen2 tag; but inside the WISP, the harvested energy is operating a 16-bit general purpose microcontroller. The microcontroller can perform a variety of computing tasks, including sampling sensors, and reporting that sensor data back to the RFID reader. WISPs have been built with light sensors, temperature sensors, and strain gauges. Some contain accelerometers. WISPs can write to flash and perform cryptographic computations. The WISP was originally developed by
133:) device that supports sensing and computing: a microcontroller powered by radio-frequency energy. That is, like a passive RFID tag, WISP is powered and read by a standard off-the-shelf RFID reader, harvesting the power it uses from the reader's emitted
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potentially to differentiate between the different signals. They have advantages in fields that include wearable systems, humanoid robotics, structural health monitoring and precision agriculture,
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Alanson P. Sample; Daniel J Yeager; Pauline S Powledge; Alexander V Mamishev; Joshua R Smith (2018-06-06). "Design of an RFID-based battery-free programmable sensing platform".
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The WISP consists of a board with power harvesting circuitry, demodulator, modulator, microcontroller, external sensors, and other components such as EEPROM and LED.
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M. Segev-Bar; N. Bachar; Y.Wolf; B. Ukrainsky; L. Sarraf; H. Haick (Dec 13, 2016). "MultiāParametric
Sensing Platforms Based on Nanoparticles".
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