Autobalancing Analog Front End for Full-Range Differential Capacitive Sensing

Depari, A.; Sisinni, Emiliano; Flammini, A.; Ferri, Giuseppe; Stornelli, Vincenzo; Barile, Gianluca; Parente, Francesca Romana

doi:10.1109/tim.2017.2785160

Cited by 48 publications

(33 citation statements)

References 26 publications

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“…The area of simple electronics sensing read-outs focuses on the sensing of physical quantities [34], such as temperature [35], mechanical pressure [36], acoustic pressure [37], electromagnetic field [38], humidity [39], gas [40], bio-signal [41], or capacity [42,43], etc. However, the detection and measurement of light and illuminance [44] received quite limited attention in recent works.…”

Section: Sensing Applications-a Brief Discussion Of the State-of-the-artmentioning

confidence: 99%

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Šotner

Jeřábek

Polák

et al. 2020

Sensors

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This paper presents a compact and simple design of adjustable triangular and square wave functional generators employing fundamental cells fabricated on a single integrated circuit (IC) package. Two solutions have electronically tunable repeating frequency. The linear adjustability of repeating frequency was verified in the range between 17 and 264 kHz. The main benefits of the proposed generator are the follows: A simple adjustment of the repeating frequency by DC bias current, Schmitt trigger (threshold voltages) setting by DC driving voltage, and output levels in hundreds of mV when the complementary metal-oxide semiconductor (CMOS) process with limited supply voltage levels is used. These generators are suitable to provide a simple conversion of illuminance to frequency of oscillation that can be employed for illuminance measurement and sensing in the agriculture applications. Experimental measurements proved that the proposed concept is usable for sensing of illuminance in the range from 1 up to 500 lx. The change of illuminance within this range causes driving of bias current between 21 and 52 μA that adjusts repeating frequency between 70 and 154 kHz with an error up to 10% between the expected and real cases.

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Section: Sensing Applications-a Brief Discussion Of the State-of-the-artmentioning

confidence: 99%

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Šotner

Jeřábek

Polák

et al. 2020

Sensors

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“…The first observation allows to underline how the management of many analog sensors is complex because of several disadvantages due to losses and signal noise along the connection cables [40] that require compensation circuits for each probe [41][42][43].…”

Section: Common Systems and Literature Backgroundmentioning

confidence: 99%

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

et al. 2019

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In this paper, a novel integrated measuring and control system for hot box experiments is presented. The system, based on a general-purpose microcontroller and on a wireless sensors network, is able to fully control the thermal phenomena inside the chambers, as well as the heat flux that involves the specimen wall. Thanks to the continuous measurements of air and surfaces temperatures and energy input into the hot chamber, the thermal behavior of each hot box component is analyzed. A specific algorithm allows the post-process of the measured data for evaluating the specimen wall thermal quantities and for creating 2D and 3D thermal models of each component. The system reliability is tested on a real case represented by a double insulating X-lam wall. The results of the 72 h experiment show the system’s capability to maintain stable temperature set points inside the chambers and to log the temperatures measured by the 135 probes, allowing to know both the U-value of the sample (equal to 0.216 ± 0.01 W/m2K) and the thermal models of all the hot box components. The U-value obtained via hot box method has been compared with the values gathered through theoretical calculation and heat flow meter measurements, showing differences of less than 20%. Finally, thanks to the data postprocessing, the 2D and 3D thermal models of the specimen wall and of the chambers have been recreated.

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“…The technology push has also invested in industrial control systems that, due to the increasing complexity of plants to control, and the consequent need for smarter control techniques [5,6], have been moved from centralized solutions toward distributed feedback-based ones [7], requiring the introduction of modern technologies (namely, a technology push). In fact, typical industrial control systems, composed of Programmable Logic Controllers (PLCs), interfacing with sensors and actuators [8][9][10] and communicating by means of industrial fieldbuses [11], have to deal with even more complex physical plants to control, requiring more functionality, reactivity and adaptivity close to sensors (called edge) to enable innovative control techniques (such as the ones based on data [6]). Moreover, in addition to above-indicated requirements, adaptivity and reactivity, necessary to respond to variations of phenomena in complex physical scenarios, bring with them the necessity for smart sensing solutions, in order to observe specific triggers that drive adaptation itself.…”

Section: Introductionmentioning

confidence: 99%

SPOF—Slave Powerlink on FPGA for Smart Sensors and Actuators Interfacing for Industry 4.0 Applications

Valente

Muttillo

et al. 2019

Energies

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We here present a new PLC-POWERLINK industrial solution for Industry 4.0 applications. The proposed solution provides the capability to separate the sensing functionality from the PLC-side, in demand for the reconfigurable FPGA implementation. In particular, we here provide a framework that supports the interfacing between the POWERLINK protocol and commonly used standards, such as I2C, SPI, and UART. This has been obtained by using a framework built around a soft IP-core Application Processor, which manages the interfacing with several POWERLINK slaves, able to support the data exchange with the POWERLINK Communication Processor. A practical application example and related implementation details are presented in the paper.

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Autobalancing Analog Front End for Full-Range Differential Capacitive Sensing

Cited by 48 publications

References 26 publications

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

SPOF—Slave Powerlink on FPGA for Smart Sensors and Actuators Interfacing for Industry 4.0 Applications

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