computer science

Wireless identification and sensing platform

Wireless identification and sensing platform is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Wireless identification and sensing platform rather than just read about it. In short: A wireless identification and sensing platform (WISP) is an RFID (radio-frequency identification) 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 radio signals.

Key takeaways

Wireless identification and sensing platform belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Wireless identification and sensing platform to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Wireless identification and sensing platform from memory before moving on to harder problems.

Reference excerpt

A wireless identification and sensing platform (WISP) is an RFID (radio-frequency identification) 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 radio signals. 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 Intel Research Seattle, but after their closure development work has continued at the Sensor Systems Laboratory at the University of Washington in Seattle.

Implementation The WISP consists of a board with power harvesting circuitry, demodulator, modulator, microcontroller, external sensors, and other components such as EEPROM and LED.

Applications WISPs have been used for light level measurement, acceleration sensing, cold chain monitoring (passive data logging), and cryptography and security applications.

See also Indian Institute of Remote Sensing Intel Research Lablets Remote sensing in mobile telecommunications NODE platform Quality control system (QCS) for web and papers SWARM Wireless sensor network nodes

References

External links "WISP wiki page". "Sensor Systems Lab WISP description". Archived from the original on 2018-10-11. Retrieved 2018-10-11. 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". IEEE Transactions on Instrumentation and Measurement. 57 (11): 2608–2615. M. Segev-Bar; N. Bachar; Y.Wolf; B. Ukrainsky; L. Sarraf; H. Haick (Dec 13, 2016). "Multi‐Parametric Sensing Platforms Based on Nanoparticles". Advanced Materials Technologies. 2 (1) 1600206. doi:10.1002/admt.201600206. S2CID 63385571. [...] potentially to differentiate between the different signals. They have advantages in fields that include wearable systems, humanoid robotics, structural health monitoring and precision agriculture, [...]

Worked examples

Example 1 — a first encounter with Wireless identification and sensing platform

Start with the simplest possible case. Write down what Wireless identification and sensing platform claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Wireless identification and sensing platform before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Wireless identification and sensing platform ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Wireless identification and sensing platform

In research: Wireless identification and sensing platform appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Wireless identification and sensing platform in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Wireless identification and sensing platform is common in secondary-school and first-year university syllabi. It links to neighbouring topics Automatic identification and data capture, Radio-frequency identification, Ubiquitous computing, so understanding it makes those chapters shorter.
In everyday life: Look for Wireless identification and sensing platform outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Wireless identification and sensing platform in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Wireless identification and sensing platform means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Wireless identification and sensing platform out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Wireless identification and sensing platform in simple terms?

Why does Wireless identification and sensing platform matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Wireless identification and sensing platform?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Wireless identification and sensing platform.