Ochratoxin A (OTA) contamination presents significant risks in viticulture, affecting the safety and quality of wine grape-derived products. This study introduces a groundbreaking method for early detection management OTA, leveraging environmental data such as temperature humidity. function derived from chemical analysis was developed to estimate OTA concentrations used label synthetic dataset, establishing safe thresholds. Two AI models were trained: one detecting presence other classifying...

Indoor positioning is an emerging technology with wide applications. Augmented and mixed reality need accurate real-time of user's limbs or direction sight in real time, reference points within the environment. Positioning also required for mall navigation, elderly people movements monitoring, many others contexts. mobile units (MUs) can be provided by multilateration techniques that compute location MU starting from distance measurements between a set beacons. In this paper, nonlinear...

Smart cities need technologies that can be really applied to raise the quality of life and environment. Among all possible solutions, Internet Things (IoT)-based Wireless Sensor Networks (WSNs) have potentialities satisfy multiple needs, such as offering real-time plans for emergency management (due accidental events or inadequate asset maintenance) managing crowds their spatiotemporal distribution in highly populated areas (e.g., parks) face biological risks from a virus) by using...

Indoor positioning of objects and people is becoming great importance in the Internet Things (IoT), in-home automation, navigation malls, airports, or very large buildings. Positioning determined by multiple distance measurements between reference points sensors. Distance measurement uses time flight an ultrasonic signal traveling from emitter to receiving This requires close synchronization sensors a sharp resolution arrival (TOA) signal. Usually, TOA detected using cross-correlation...

Food computing refers to the integration of digital technologies, such as artificial intelligence (AI), Internet Things (IoT), and data-driven approaches, address various challenges in food sector. It encompasses a wide range technologies that improve efficiency, safety, sustainability systems, from production consumption. represents transformative approach addressing sector by integrating AI, IoT, methodologies. Unlike traditional which primarily focus on leverages AI for intelligent...

Indoor localization and tracking of persons assets with centimeter-level accuracy for inventory, security, medical monitoring, training, as well gesture interfaces domotics, is highly desirable in the framework emerging IoT paradigm. Low cost, tiny, battery, or batteryless operated position sensors are required. 3-D can be computed by combining three more distance measurements between sensor reference points. Our aim to give capability measuring from a point radio frequency identification...

Internet of Things (IoT) solutions guarantee the high performance requested by users and authorities in terms efficiency, sustainability, connectivity, durability for modern transportation infrastructures, allowing, at same time, small size, low power consumption, wireless transmission easily deployable solutions.IoT monitoring systems powered through Energy Harvesting Technologies (EHTs) are often indicated as most efficient to address these requests because several advantages (e.g., remote...

Natural disasters and the poor management of civil engineering structures infrastructures require timely action new tools such as specially designed structural health monitoring platforms. This paper proposes an innovative platform based on a network wirelessly connected, low-power, renewable-energy-fed sensor units. The is multipurpose tool for diagnostics, maintenance, supervision, capable simultaneously carrying out damage detection, localization, identification, “multiclass”...

The growing interest for indoor position-based applications and services, as well ubiquitous computing location aware information, have led to increasing efforts toward the development of positioning techniques. Many require accurate or tracking people assets inside buildings, some market sectors are waiting such technologies starting a fast growth. Ultrasonic systems already been shown possess desired accuracy refresh rate. However, they still synchronization between ultrasound emitters...

The design and testing phase of photovoltaic (PV) power systems requires time-consuming expensive field-testing activities for the proper operational evaluation maximum point trackers (MPPT), battery chargers, DC/AC inverters. Instead, use a PV source emulator that accurately reproduces electrical characteristic panel or array is highly desirable in-lab rapid prototyping. In this paper, we present development low-cost microcontroller-based emulator, which allows static dynamic performance...

Recent technological advancements have transformed UHF passive RFID tags into "smart" transponders enhanced with computational and sensing capabilities, thus legitimated to become fully-fledged components of the IoT. Nonetheless, technology has not been addressed yet by IETF 6lo working group among various link layer technologies for running IPv6 over networks resource-constrained nodes in Research works scientific literature only consider proxy-based solutions inclusion IoT do suggest any...

An experimental study is carried out to assess the effect of temperature on conversion efficiency ultrahigh-frequency energy harvesters based diode-capacitor Dickson charge pumps, frequently used in self-energizing circuits, such as radio frequency identification tags or wireless sensor nodes. Using off-the-shelf Schottky diodes often adopted for this application, it shown that harvester at 868 MHz dependent due changing rectification ratio, namely ratio between forward and reverse current...

This paper presents the design and hardware implementation of open-source dedicated to smart converter systems development. Smart converters are simple or interleaved converters. They equipped with controllers that able online impedance match for maximum power transfer. These conversion particularly feasible photovoltaic all renewable energies working in continuous changing operating conditions. represent promising solutions recent energetic scenarios, fact their application is deepening...

In this paper, an RF energy harvesting system with improved dynamic impedance matching network (DyIMN) is proposed. With solution, the minimum input power required for circuit operation -10 dBm, allowing a working distance of 1.5 m from source 30dBm. The was fabricated on FR4 substrate using off-the-shelf discrete components and it able to convert regulated DC voltage in order general-purpose electronic devices. experimental results demonstrate capability obtain optimum received range - +5dBm.

Increasing efforts toward the development of positioning techniques testify growing interest for indoor position-based applications and services. Many require accurate or tracking people assets, some market sectors are starting a rapid growth products based on these technologies. Ultrasonic systems have already been demonstrating their effectiveness to possess desired accuracy refresh rates. In this work, it is shown that typical signal used in ultrasonic estimate range between target...

In this paper, a new wireless sensor, designed for 0.35 µm CMOS technology, is presented. The microchip was to be placed on an object the continuous remote monitoring of its temperature and illumination state. sensor based dependence I-V characteristics bipolar transistors available in while integrated p-n junction photodiode. An on-chip 2.5 GHz transmitter, coupled mm-sized dipole radiating element fabricated same made top metal layer die, sends collected data wirelessly radio receiver...

Gesture recognition is a novel technology that aims to change the way people interact with machines. Existing solutions typically recognize gestures using camera vision, wearable sensors, or specialized signals (e.g., WiFi, sound, and visible light), but they have limitations such as high-power consumption low signal-to-noise ratio (SNR) in comparison their surroundings, making it difficult accurately detect finger movements. In this research, we propose device-free gesture identification...

The pervasiveness of RFID technology in novel application fields, such as agriculture and food chain integrated management, is related to the addition sensor computational capabilities systems, a consequence, their powering becomes challenge. Passively powered devices, inductively coupled passive HF utilize an external electromagnetic field operate without internal power source. This paper presents battery-less useful establish safer more manageable supply perishable comestibles.

In this paper we present a battery-less RFID sensor tag, operating at 868 MHz, characterized by novel impedance matching, guaranteeing improvements in terms of wireless energy transfer efficiency. A more efficient is high interest for several applications and, particular, reduced recharging time the embedded capacitor. This represents fundamental step to enlarge range usually limited classic networks, such as data logging or environmental sensing large spaces. Challenges related...

The performances of two RF transmitters, monolithically integrated with their antennas on a single CMOS microchip fabricated in standard 0.35 µm process, are presented. usage these architectures the Internet Things (IoT) paradigm is envisioned, as part custom conceived data transmission system. implemented circuits use different directly on–off keying (OOK) modulated oscillator topologies whose outputs employed to feed loop antennas. powering both transmitters duty-cycled for reducing...

Several characteristics of the human body turn into postural behavior, recognizable also during sport activities. The presence differences between types could lead to different behavior wearable and fitness-devote products. A new based on machine learning techniques for exercise detection repetitions count is described in this work. proper dataset has been obtained order offline train network. Eventually, algorithm implemented inside an edge device real-time test e verification.

A novel Wireless Smart Sensor Platform compatible with EPCglobal Class-1 Gen2 readers was developed. The platform is comprised of a five stage Dickson voltage multiplier, dynamic impedance matching network (DyIMN), an XLP microcontroller (MCU) and RFID tag IC embedded temperature sensor. Device range operations have been assessed up to distance 1.5 m from the RF source, corresponding minimum input power -10 dBm. Firmware optimization leads reduction dissipation below 500nW in sleep mode,...