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Zigbee - Wikipedia
Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection. Hence, Zigbee is a low-power, low data rate, and close proximity (i.e., personal area) wireless ad hoc network.
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Applying Ultra-Wideband Wireless Technology for Security and Automation - Security Industry Association
Decades-old ultra-wideband technology is enjoying a renaissance in secure access and beyond Like Bluetooth and Wi-Fi, ultra-wideband (UWB) is a wireless technology that uses radio waves for communications. By operating at a very high frequency and using a wide spectrum, UWB outperforms other wireless technologies in terms of accuracy, robustness in wireless connectivity, and security.…
Apple and Samsung newest phones use a little-known technology that lets your phone understand exactly where it is — and could mean you never misplace anything again
The tech will make features like AirDrop more powerful and can help you find lost items or easily manage nearby appliances using just your smartphone.
Tile to launch a new tracker powered by ultra-wideband technology, add AR finding to app
Tile is preparing to introduce a new product this year that will serve as a rival to Apple’s long-awaited AirTags and other lost-item trackers coming to the market, including those from Samsung, TechCrunch has learned. While previous Tile trackers have leveraged Bluetooth to help users locate lost items — like a misplaced set of keys, […]
UWB Asset Tracking without batteries? Here's How | ONiO
Imagine a world where you never have to worry about your assets running out of power. UWB asset tracking can make this dream a reality! Self-powered, batteryless technology will be the key for widespread use of UWB - spanning a wide range of IoT devices - tags, product packaging, labels. In this article, we will discuss how UWB technology can be used to track assets without the need for a battery.
Multiple moving person tracking by UWB sensors: the effect of mutual shielding persons and methods reducing its impacts - EURASIP Journal on Wireless Communications and Networking
Ultra-wideband (UWB) radars are sensors allowing to track people in critical environments and situations. The results reached by single UWB sensors for such applications have shown that they are able to detect and track a person very well in a single person scenario. However, in multiple moving person scenarios, the ability of a single UWB sensor to detect several persons is usually significantly reduced. This is caused by a mutual shielding among people. In this paper, we will deal with the mutual shielding effect and its impacts, as well as with the methods of improving multiple moving person tracking by UWB radars. Firstly, we will provide a comprehensive description of the mutual shielding effect. Then, based on its analyses, we will state three complementary approaches created by the authors of this paper to reduce its impacts. They include an enhancement of the low-level echo of the targets, radar antenna array positioning at a convenient height, UWB sensor network application and, finally, their mutual combinations. The properties of those approaches will be demonstrated by two experimental measurements aimed at through wall tracking of two and three people, respectively. The results obtained in the experiments will illustrate the mutual shielding effect and the potential of the methods we have proposed to reduce its impacts.
Safety Aspects of People Exposed to Ultra Wideband Radar Fields
The safety aspects of people exposed to the field emitted by ultra wideband (UWB) radar, operating both in the spatial environment and on ground, for breath activity monitoring are analyzed. The basic restrictions and reference levels reported in the ICNIRP safety guideline are considered, and the compliance of electromagnetic fields radiated by a UWB radar with these limits is evaluated. First, simplified analytical approaches are used; then, both a 3-dimensional multilayered body model and an anatomical model of the head have been used to better evaluate the electromagnetic absorption when a UWB antenna is placed in front of the head. The obtained results show that if the field emitted by the UWB radar is compliant with spatial and/or ground emission masks, then both reference levels and basic restrictions are largely satisfied.
(PDF) People Counting Based on an IR-UWB Radar Sensor
PDF | In this paper, we propose a people counting algorithm using an impulse radio ultra-wideband (IR-UWB) radar sensor. The proposed algorithm is based... | Find, read and cite all the research you need on ResearchGate
CIR-Based Device-Free People Counting via UWB Signals - PubMed
The outbreak of COVID-19 has resulted in many different policies being adopted across the world to reduce the spread of the virus. These policies include wearing surgical masks, hand hygiene practices, increased social distancing and full country-wide lockdown. Specifically, social distancing involv …
Compact, Dual-Polarized UWB-Antenna, Embedded in a Dielectric | Request PDF
Request PDF | Compact, Dual-Polarized UWB-Antenna, Embedded in a Dielectric | A compact dual-polarized antenna is described for ultrawideband (UWB) applications. The main features of the antenna, besides an... | Find, read and cite all the research you need on ResearchGate
Apple Reveals a Major Modular Wall Unit System that Automatically Configures Smart Homes & Buildings
Today the US Patent & Trademark Office published a patent application from Apple that relates to a "Modular Wall Unit System." It's a vastly grander vision for Apple's next-gen Smart Home project – and well beyond a simple mesh network.
