- Energy Efficient Wireless Sensor Networks
- Energy Harvesting in Wireless Networks
- Air Quality Monitoring and Forecasting
- IoT-based Smart Home Systems
- IoT and Edge/Fog Computing
- Bluetooth and Wireless Communication Technologies
- Security in Wireless Sensor Networks
- Indoor and Outdoor Localization Technologies
- Opportunistic and Delay-Tolerant Networks
- Innovative Energy Harvesting Technologies
- Context-Aware Activity Recognition Systems
- Laser Applications in Dentistry and Medicine
- Human Mobility and Location-Based Analysis
- Salivary Gland Disorders and Functions
- Network Security and Intrusion Detection
- Mobile Ad Hoc Networks
- Impact of Light on Environment and Health
- Green IT and Sustainability
- Vehicle emissions and performance
- Vagus Nerve Stimulation Research
- IoT Networks and Protocols
- Mobile Crowdsensing and Crowdsourcing
- Distributed and Parallel Computing Systems
- Botulinum Toxin and Related Neurological Disorders
- Data Stream Mining Techniques
Universitatea Națională de Știință și Tehnologie Politehnica București
2014-2025
University of Bucharest
2010-2019
During the last few years, scientists have become increasingly concerned about air quality. Particularly in large cities and industrialised areas, quality is affected by pollution from natural anthropogenic sources this has a significant impact on human health. Continuous monitoring of an important step investigating causes reducing pollution. In paper, we propose new autonomous multi-rotor aerial platform that can be used to perform real-time cities. The system able cover with high spatial...
In this paper we present a mobile system for air quality and pollution measurement suited the urban environment. We designed, tested built reliable device that can acquire information about of its surroundings, store it in temporary memory buffer periodically relay to central on-line repository. Real-time gathered data be freely accessed by public through an web interface. Users select view different gases concentrations overlapped on map city.
Wireless sensor and actuator networks (WS&ANs) are a new technology based on of small radio-enabled embedded devices that being deployed in areas such as environmental monitoring, vehicle tracking, building management, body monitoring other applications. Power sources for network nodes often limited, which imposes restrictions hardware resources their use by the underlying software. We propose wireless architecture is especially designed task home automation. Our system relies low power...
Air pollution represents a significant threat to human health and the environment, especially in densely populated metropolitan areas. Determining air levels urban areas is crucial for raising public awareness about quality potential risks, empowering citizens make informed decisions their well-being, potentially leading improved healthier communities long run. The project proposes CityAirQ, reliable tracking system, that uses parameters environmental data generate dynamic maps regions....
This paper discusses a scheduling algorithm for the sub-tasks of an application in Wireless Sensor Network. With next generation sensor networks, task-based systems are needed to provide services entities outside network. Allocation tasks on different wireless nodes must take into account energy constraints, compatibility given node or topology and be agreement with purpose The problem described this requires maximizing network lifetime satisfying these allocation constraints. solution...
The existing communication technologies for IOT have become either saturated or do not meet actual needs, regarding long distances low power consumption. We propose a study about mobility the LoRa protocol, new Low Power Wide Area Network technology. paper draws upon short overview of physical layer as well on our testing design, some achieved and signal results gathered in Bucharest, Romania its surroundings.
Wireless Sensor Networks (WSNs) is a technology which increasingly implemented in multitude of data acquisition, processing, and control applications. A rectifier antenna, or rectenna device used to convert radio frequency energy into electrical through the use circuit attached directly regular antenna. For most purposes, rectennas are for microwave transmission, due their high efficiency converting microwaves energy. In this paper, we study antennas harvesting applicability powering Nodes.
A Lightweight, Versatile Gateway Platform for Wireless Sensor Networks enable the Internet of Things through their many applications, and as such require multiple, flexible gateway platforms. Gateways in are bulky, difficult to use devices requiring special deployment extra programming effort. We designed a lightweight, extremely portable, dual-processor USB device with an optional external antenna. Our design proves be versatile both on side, where it can appear serial connection or...
With the worldwide urban population following a continuous growth, more individuals expose themselves to less healthy environment by inhaling polluted air. The current pollution measurement techniques make use of automated monitoring stations that are usually installed in certain key points around city but can only provide coarse-grained air quality reports as well not being able indicate sources polluting agents. As traffic related cannot be traced single location, there is need for new...
The degree of pollution in the atmosphere is increasing, leading to more and people being affected by breathing health issues. However, are increasingly aware need monitor their environment. We propose a platform that leverages Wearable Sensor Device Mobile Devices collect large amounts air quality data on central Real-Time Data Processing System can process all this information, aggregate it disseminate back users relevant way. design develop capable measuring CO <sub...
Wireless sensor nodes which harvest energy from the environment have become an alternative to battery powered nodes. Requirements for efficient use of extracted led development algorithms that manage node functions depending on amount collected energy. This article introduces a novel solution adaptively setting duty-cycle wireless in order maximize its monitoring lifetime. The developed are particularly suited harvesting networks situated locations where is scarce or harvested power exhibits...
Multi-Owner Wireless Sensor Networks consist of devices owned by different entities. They have the purpose covering large areas and reducing energy consumption associated with transmission over long distances. We propose use Virtual grouping resources in a Network delivering service to owner. designed scheme for securing communication Network. The nodes that belong specific owner must authenticate themselves before receiving credentials Service Description. investigated impact false data...
The Internet of Things and Ubiquitous Computing are becoming more popular in the IT world. There increasingly heterogeneous systems interconnected devices, from general purpose smartphones to highly specialized embedded devices. An important constraint mobile devices is limited battery capacity. Users will stop using that have be recharged frequently not reliable. For both small sensors a significant energy consumed with data communication. We develop system, consisting smartphone an device...
Powering a device using solar generated energy can be difficult, especially when that is meant to function constantly over long period of time. In this article we present an architecture for harvesting wireless sensor networks used develop powered applications. It will cover the hardware as well software requirements and specifications truly autonomous network. The composed new low power node designed powerful development platform efficient module. efficiently use stored by implementing...
Battery powered wireless sensor nodes (WSN) are rarely efficient from the point of view life time, development and maintenance cost. In this context, energy harvesting techniques used more more, coupled with super capacitors, in order to mitigate costs increase lifetime. This paper presents results powering Sparrow v3, a node, capacitors charged by solar panel. The experimental show that system may operate an autonomous mode, using only power provided photovoltaic cells. novelty setup is...
Wireless Sensor Networks (WSNs) is a technology which increasingly implemented in multitude of data acquisition, processing, and control applications. Node localization such networks one the topics currently intensely researched. The solution proposed this paper based on measuring radio waves propagation from emitter to receiver. A new approach will be presented, an oriented respecting requirements low cost network like energy consumption, processing power lack specialized hardware.
Environment monitoring is key for multiple applications and requires that devices used in acquiring environment data to be scattered over a wide area, but at the same time maintain accessibility of information from all sensor nodes. Although many Wireless Sensor Networks are based on IEEE 802.15.4 standard low-power, Wi-Fi networks offer most interoperability with other devices. We envision system which integrates two networks' main capabilities by heterogeneous Network. Nodes can transmit...
This paper consists of developing a hardware and software implementation smart shopping cart, focused on modularity, low price simple use. solution can be modified the usage started shortly by traders. It tends to meet as many end-user needs possible.The system uses mechanism recognize products that are inserted into cart using detection with camera pre-trained neural network, inference which is running specific Intel calculation module, without need for network connectivity. The project...
Background and Objectives: Saliva is of utmost importance for maintaining oral health. Management saliva flow rate deficiency recently includes salivary neuro-electrostimulation. The aim this paper to present a new model pacemaker—the MICROSAL device (MD), an intelligent, miniaturized, implant-supported used stimulation. Materials Methods: This report presents the development, calibration, first clinical tests which involved MD. novel features are pH sensor fact that it communicates with...