Integration of technological solutions aims to improve accuracy, precision and repeatability in farming operations, biosensor devices are increasingly used for understanding basic biology during livestock production. The aim this study was design validate a miniaturized tri-axial accelerometer non-invasive monitoring farmed fish with re-programmable schedule protocols.The device attached the operculum gilthead sea bream European bass juveniles their physical activity by measurements movement...

In this paper, we present the design of a practical underwater sensor network for offshore fish farm cages. An overview current structure an farm, applied solutions, and their weaknesses are given. A mixed wireless–wired approach is proposed to mitigate problem wire breakage in wired networks. The based on serial arrangement identical sections with wireless interconnections areas. Wireless section alleviates maintenance operations when cages damaged. analytical model solution studied terms...

The biosensor technology has the potential to revolutionize aquaculture industry, but selection of tagging method, operational mode (stand-alone vs. wireless systems) and telemetry ultimately depends on life species, stage research question. In particular, AEFishBIT is a small stand-alone device composed tri-axial accelerometer, microprocessor, battery RFID tag that was designed be externally attached operculum. This unique location serves provide simultaneous measurements activity patterns...

A blood pressure sensor suitable for wireless biomedical applications is designed and optimized. State-of-the-art sensors based on piezoresistive transducers in a full Wheatstone bridge configuration use low ohmic values because of relatively high sensitivity noise approach resulting power consumption. In this paper, the piezoresistance are increased order to reduce by one magnitude consumption comparison with literature approaches. The microelectromechanical system (MEMS) sensor, mixed...

A new 2.5V CMOS large capacitive-load driver circuit, using a direct bootstrap technique, for low-voltage VLSI digital design is presented. The proposed circuit exhibits high speed and low power consumption to drive capacitive loads. We compare our structure with the based on Chen et al. (2002) in terms of product three metrics, active area, propagation time delay, consumption. Results demonstrate superior performance circuit.

In this paper, we present a novel charging method for underwater batteryless sensor node networks. The target application is practical network oceanic fish farms. sections of the use wireless power transfer system based on ISO 11784/11785 HDX standard supplying energy to nodes. Each has an accumulator capacitor, which charged voltage node. A new distributed scheme proposed and discussed in detail reduce required time charge all nodes sections. One important key its decentralized control...

The advanced development of sensor technologies has led to the emergence fish biosensors that are currently used for research and commercial purposes. AEFishBIT is a miniaturized biosensor attached operculum measures physical activity respiration frequencies. In this study, we determined effect tagging method evaluated use monitor post-smolt Atlantic salmon in tank-based system. piercing tag had negative impact on gills operculum, unlike identical protocols gilthead sea bream European bass....

This paper describes the design and optimization of a smart algorithm based on artificial intelligence to increase accuracy an ocean water current meter. The main purpose meters is obtain fundamental frequency waves currents. limiting factor in those underwater applications power consumption that reason use only ultra-low microcontrollers. On other hand, nowadays extraction algorithms assume processed signal defined fixed bandwidth. In our approach, belonging edge computing research area, we...

This paper presents a low power voltage limiter design that avoids possible damages in the circuits of analog front-end RFID sensor due to surges whenever reader and tag are very close. The proposed takes advantage implemented bandgap reference regulator order provide temperature process deviation limiting voltage. measured is 2.9V with variation only +/-0.025V for four dies. current consumption 150nA when far away one each other, not sensitivity an undesired limiter. circuit on cost 2P4M...

In this paper, the optimization and analysis of threshold configurable regenerative comparators (TC) for use in ultra-low power consumption ADCs is introduced (TC-ADC). Using a 90 nm CMOS technology, obtained comparator achieves 77% improvement terms (3μW) when compared with previously published TC comparators, while maintains same full scale specification (±160 mv). The proposed design exhibits delay time 1.31 ns — 20% which allows achieving 6-bit TC-ADC up to 25 MS/s sampling period 40 ns....

Purpose Nowadays, in order to improve current applications, industry incorporates their solution approaches artificial intelligence techniques and methodologies like Fuzzy Logic, neural networks and/or genetic algorithms (GA). Artificial complement classical include concepts that simulate the way humans solve problems or how processes work nature. In this work, Logic system cancels effects of load perturbances an energy plant, by implementing a secondary controller which complements main...

In this paper, a MEMS capacitive pressure sensor and capacitance to digital converter are presented. The transducer has been designed fabricated using MetalMUMPs process from MEMSCAP. For an diaphragm area of 600×600 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> electrostatic variation up 30 kPa, the exhibits change 9.3 pF 13.4 pF, with INL 0.2% A in low cost 2P4M 0.35μm CMOS standard as interface sensor. measured resolution 7.9 bit...

There is a strong motivation for the development of low-power RFID sensors tags. In this work, full passive pressure sensor tag presented paying special attention to time digital converter based on nonius oscillators. The circuit has been designed using 90nm CMOS standard process. Post-layout simulations show that allows estimation input pulse width in range from 34μs 51μs with LSB 2ns and an effective resolution 8.3 bits. It requires maximum conversion 97.8μs average power consumption...

This paper presents a low power voltage limiter design for avoiding possible damages in the analog front-end of RFID sensor due to surges whenever readers and tags are close. The proposed takes advantage implemented bandgap reference regulator blocks order provide deviation limiting temperature variation process dispersion. measured is 2.9 V with only ±0.065 12 dies. current consumption 150 nA when reader tag far away, not sensitivity an undesired limiter. circuit on cost 2P4M 0.35 μm CMOS...

There is a strong motivation for the development of new low power sensors wireless passive applications such as RFID. In this work, combination MEMS capacitive pressure transducer and to digital converter compatible with sensor enabled RFID tag are presented. The has been designed fabricated using MetalMUMPs process. Its characterization showed an output variation between 9.3 pF 13.4 corresponding 0 kPa 30 kPa, INL 0,2%. On other hand, capacitance implemented in cost 2P4M 0.35µm CMOS...

Reducing power consumption leads to improve wireless sensor autonomy, increase battery life, and reduce radiated power. State-of-the-art blood pressure sensors based on piezoresistive transducers in a full Wheatstone bridge configuration uses low ohmic values because high sensitivity noise approach. In this work, the piezoresistance are increased order one of magnitude consumption. The introduced by improvement was proved that does not limit accuracy for 8-bit applications. Therefore, with...

Underwater sensor networks play a crucial role in collecting valuable data to monitor offshore aquaculture infrastructures. The number of deployed devices not only impacts the bandwidth for highly constrained communication environment, but also cost network. On other hand, industrial and literature current meters work as raw loggers, most calculations determine fundamental frequencies are performed offline on desktop computer or cloud. Belonging edge computing research area, this paper...

This paper presents a tidal current meter that is based on the inertial acceleration principle for offshore infrastructures in deep water. Focusing marine installations of aquaculture industry, we studied forces tides at depth 15 m by measuring acceleration. In addition, used commercial MEMS triaxial accelerometer to record values. A prototype measurement unit was developed and tested real infrastructure Gran Canaria, which one Canary Islands Atlantic Ocean. The proposed as recorder assess...

This paper proposes some important contributions in the design of a low voltage and energy consumption CMOS level up shifter (bqc-ls) as well to obtain high performance down (bqc-ls/rev) based on structure presented [1]. The novel up/down shifters are suitable for multiple clocks different supply voltages domain logic systems with minimal area consumption. When pre-layout simulation is realized UMC 65nm technology using regular threshold transistors capacitive load (2pF), active energy-delay...

The design, fabrication and test of a Low Frequency (LF) analog passive front-end for the ISO 11784/11785 14223 HDX communication protocols is presented. It has been implemented in TSMC 90nm CMOS process. different blocks have order to allow straightforward interface with low power microcontroller. includes following main features: 1.2V regulated output voltage, frequency-shift keying (FSK) modulation, amplitude-shift (ASK) demodulation, discharge reset. tag current consumption during both...

This paper presents the design of a wireless sensor network for oceanic floating cages in aquaculture. The deployment over current aquaculture installations is discussed. software and hardware node are outlined. A information power transfer interface, based on ISO 11784/11785 HDX standard, underwater nodes studied. misalignment problem interface antennas evaluated depth. In addition, it determined maximum allowed to keep efficiency 70%. Moreover, we establish linear function model charging...

A low-power invasive blood pressure transducer has been designed. It is based on a structure of four high resistive strain gauges in full Wheatstone bridge configuration. For obtaining the required sensitivity, gauge was allocated performing careful mechanical simulation membrane behaviour. The electronic conditioning circuit and ADC were optimized to compensate noise introduced by gauges. batteryless RFID tag designed incorporate supply sensor fabricated measured. power supplies at distance...

A transimpedance amplifier (TIA) based on a voltage conveyor structure designed for high gain, low noise, distortion, and power consumption is presented in this work. Following second-generation topology, the current blocks are regulated cascode down converter buffer, respectively. The proposed buffer distortion consumption, whereas noise gain. resulting TIA was fabricated 65 nm CMOS technology logic mixed-mode designs, using low-threshold transistors supply of ±1.2 V. It exhibited 52 dBΩ...