Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 63 for “"Zigbee"”.
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An ECA-Based ZigBee Receiver
… this thesis, the design and implementation of a ZigBee receiver on an Element CXI ECA-64 platform is presented. The ZigBee receiver is evaluated through simulations and implementation on an ECA device. During the design and implementation of the ZigBee receiver, some design experience and tips …
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Senzorové moduly pro bezdrátovou síť ZigBee
… moduly pro bezdrátovou senzorovou síť ZigBee. Tyto moduly mezi sebou budou schopny komunikovat a předávat si informace o naměřených hodnotách. Budou řízeny koordinátorem sítě, který bude také zpracovávat data senzorových modulů a rozhodovat o další krocích v síti.
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Zigbee based wireless adjustable speed drive system
… is discussed in detail. Incorporating the zigbee wireless technology into the motor drive system, for the speed control of an AC and a DC motor, by implementing digital pulse width modulation technique is the aim of this thesis. The main characteristics of the proposed system are: 1) its …
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Adaptive thermal comfort computation with Zigbee wireless sensor networks
… sensor networks easy accessible and usable. Zigbee (802.15.4) operated wireless sensor networks have been commonly used in home automation, building automation, personal health care and fitness, consumer electronics, telecom services etc. In our thesis we investigate Zigbee's application in …
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ZigBee-based Firmware Updating Algorithms in Smart Home Environment
… home gateway and a number of home appliances. ZigBee technology has great advantage (or IEEE 802.15.4) and is widely used in this system. Therefore, updating the smart home ZigBee firmware is essential in the practice. Since the ZigBee network contains massive nodes and many sensors are battery …
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An Investigation of a Theoretical Zigbee-Based Border Crossing System
… a theoretical border crossing system utilizing ZigBee-based wireless networks. ZigBee (IEEE Standard 802.15.4) is a low data rate, low power, wireless communication protocol that enables the spontaneous formation of ad hoc wireless networks. In this system, trucks traversing border crossings are …
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Particle swarm optimization applications to mpeg-4 transmission over ZigBee
The IEEE 802.15.4 standard commonly known as ZigBee is a wireless sensor targeted at applications that require low data rate, low power and less expense. IEEE 802.15.4 standard is limited to a through-rate of 250kbps maximum providing supports for small packet file transitions and is design to …
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The Design, Building, and Testing of a Constant on Discreet Jammer for the IEEE 802.15.4/ZIGBEE Wireless Communication Protocol
… security issues, and bodily harm. The 802.15.4/ZigBee protocol is used in low power, low data rate, and low cost wireless applications such as medical devices and home automation devices. This protocol uses CSMA-CA (Carrier Sense Multiple Access w/ Collision Avoidance) which allows for multiple …
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IoT Networking via Cross-technology Communication
… wireless techniques, such as Wi-Fi, LTE, ZigBee,Bluetooth, and LoRa. Due to the scarcity of spectrum resources, these wireless technologies commonly share the unlicensed industrial, scientific and medical (ISM) radio band. The coexistence scenario motivates the studies of IoT networking …
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Estudi de xarxes WPAN 802.15.4
… de les xarxes WPAN 802.15.4 i de les xarxes ZigBee.
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Wireless Monitoring of Driver's Pulse Rate and Temperature Using Hand Gloves Approach
… unit, power supply, microcontroller, and Zigbee transmitter unit. . This project consists of three systems: Transmitter, Receiver, and Wireless healthcare monitoring unit.</p> <p>The transmitter section includes sensors, amplifier, processing unit and Zigbee for transmission. Here the …
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Design of a wireless platform for wearable and home automation applications
… sensors for bio-medical applications and a ZigBee wireless network for home automation applications. The targeted bio-medical application is bone strain monitoring. The current setup to collect strain data is composed of a data acquisition unit connected to a bench top load instrument. For …
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Intelligent low-complexity widely deployable diagnostic tools for wireless edge device security using machine learning
… for feature extraction. WP 4 focuses on WSN (ZigBee) interference detection and classification using the developed low-order features. The optimized machine learning models in WP 2 form the foundation for interference diagnostic tool development. Software-defined radios (SDRs) and Raspberry Pi …
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Srovnání metod pro lokalizaci uvnitř budov
… osob či objektů pomocí IoT technologií ZigBee a LoRa™. Jsou zde probrány možnosti metod lokalizace, parametry užívaných technologií a seznámení se s existujícími moduly dostupnými na trhu. Výsledkem praktické části je návrh desek plošných spojů, základního odzkoušení hardwaru a softwaru …
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A Wireless Surface Electromyography (WSEMG) System
… SEMG system has been developed based on the ZigBee wireless standard. The system includes N-channels, each consisting of a wireless ZigBee transmitting modem, an 8-bit microcontroller, a low-pass filter and a pre-amplifier. All channels stream data to a central computer via a wireless …
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RF techniques for IEEE 802.15.4: circuit design and device modelling
… IEEE 802.15.4 standard (commercially known as ZigBee) as the one of choice, and analysing several front-end architectures on which its transceiver circuitry can be based, an application, the Tyre Pressure Monitoring System (TPMS) is selected to examine the capabilities of the standard and its …
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Design and Implementation of a Web-based Home Energy Management System for Demand Response Applications
… for demand response communications, selected ZigBee and smart energy profile features for appliance interface, and security aspects for a web-based HEM system. The proposed web-based HEM system allows homeowners to be more aware about their electricity consumption by allowing visualization of …
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Communication intelligente sans fil detectant le noeud le plus proche
… et de sa fiabilité. Cette méthode est appelée ZigBee. Il s'agit d'une technologie rentable et efficace qui relie un périphérique et un certain nombre d'afficheurs. En utilisant la méthode RSSI (Received Signal Strength Indicator), on a pu mesurer la distance entre le nouveau dispositif …
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The SoftPHY abstraction : from packets to symbols in wireless network design
… Current wireless technologies such as WiFi or Zigbee use forward error correction to drive bit error rates down when there are few interfering transmissions. However, as more of us use wireless networks to retrieve increasingly rich content, interference increases in unpredictable ways. This …
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