Differential Output Research Articles

Modeling and control of a novel mechatronic model of a 750 kW-FSWT with power-splitting transmission using RBF neural network: a bond graph approach

This work addresses issues that appear from wind turbines equipped with frequency converters and presents a new fixed-speed wind turbine (FSWT) concept based on a split power transmission, along with a Mechatronic Control Model. The wind turbine rotor drives the first transmission shaft, while a servomotor with variable speed powers the second input. The differential gear transmission output is linked to the electric grid through an asynchronous generator. To optimize the power extracted from the wind energy while minimizing excessive dynamic loads on the wind turbine, a mechatronic control model of a 750 kW-FSWT is applied using a proportional and integral controller (PI). The paper suggests employing neural networks and evolutionary algorithms for determining appropriate PI gains. For collective servomotor control of a 750 kW-FSWT, a radial basis function (RBF) neural networks based on PI controller is proposed. To acquire an optimum dataset for RBF training, the particle swarm optimization (PSO) evolutionary algorithm is harnessed. The robustness and effectiveness of the proposed model and controller are verified and confirmed through simulation results. Hands-on experience is conducted using the 20-sim software package.

Novel coumarin-based ratiometric bifunctional fluorescent probe mimicking a set-reset memorized device

A novel coumarin-based fluorescent sensor CHE, incorporating 2-hydrazinylbenzothiazole and coumarin aldehyde, has been developed that demonstrated a preferential detection of Hg2+ and Ag+ in presence of interferences. Compared to previously prevalent intensity-based fluorescent probes, CHE exhibited a ratiometric fluorescence response to Hg2+ and Ag+, and further accurately differentiated Hg2+ and Ag + using the differential extractive ability of EDTA when interacting with ion-CHE complexes. Sensing mechanism was investigated and elucidated. The chemosensor CHE was successfully applied to detect Hg2+ and Ag+ in six distinct samples with satisfactory results. Additionally, combinatorial logic circuits were constructed utilizing three distinct logic gates (NOT, OR, and INH) based on the sensor's differential output signals in response to Hg2+/Ag+ and other cations. Interestingly, utilizing the reversible and reproducible switching behavior of the EDTA interaction with Hg2+, a conceptual 'Write–Read–Erase–Read' memory function with multi-write capability was proposed, offering a novel perspective for molecular-based memory systems.

Simulation Validation of the Analytical Model of Differential Inductive Servo Sensor for Imaging Signal Generation and Measurement Applications

This paper explores the utility of the seesaw model sensor apparently giving a differential output in a differential manner, which validates one of the major findings of this research using simulation techniques. In this article, simulation is carried out of the designed mathematical model and its necessary derivations for frequency, frequency hysteresis, sensing voltage, magnetic field strength, resonant frequency, mass of bar and mass of target object and the current excitation responses also obtained. Furthermore, the linearity issues of the transducer response curve are addressed for an application scenario of using an inductor with 3R resistor in a differential manner. The parameter of interest is displacement of the core bringing about changes in inductance. Displacement makes the differential inductor to oscillate and undergo changes in differential style. Other parameters of interest such range, frequency, inward output voltage, outward output voltage were explored and results obtained validated the analytical modelling from mathematical derivations in recent literature.

Front-end electronics development of large-area SiPM arrays for high-precision single-photon time measurement

TRopIcal DEep-sea Neutrino Telescope (TRIDENT) plans to incorporate silicon photomultipliers (SiPMs) with superior time resolution in addition to photomultiplier tubes (PMTs) into its detection units, namely hybrid Digital Optical Modules (hDOMs), to improve its angular resolution. However, the time resolution significantly degrades for large-area SiPMs due to the large detector capacitance, posing significant challenges for the readout electronics of SiPMs in hDOM. We analyzed the influences of series and parallel connections when constructing a large-area SiPM array and designed a series-parallel connection SiPM array with differential output. We also designed a high-speed pre-amplifier based on transformers (MABA-007159) and radio frequency amplifiers (BGA2803), and an analog multi-channel summing circuit based on operational amplifiers (LMH6629). We measured the single photon time resolution (SPTR) of a 4 × 4 SiPM (Hamamatsu S13360-3050PE) array (12 × 12 mm2) of approximately 300 ps FWHM. This front-end readout design enables the large-area SiPM array to achieve high-precision single photon time measurement in one readout channel.

QRS transition during interrupted lead screwing-in to confirm left bundle branch capture during left bundle branch area pacing

Abstract Background QRS transition criteria during dynamic manoeuvers are the gold-standard for non-invasive confirmation of LBB capture, but they are seen in < 50% of LBBAP procedures. Purpose we hypothesized that transition from LVSP morphology to LBBP morphology, when observed during lead penetration into the deep IVS with interrupted pacemapping, can suggest LBB capture. Methods consecutive patients with an attempt of LBBAP procedure were selected at our institution. First, we defined QRS transition from LVSP to ns-LBBP capture during interrupted lead screwing-in pacemapping. Then, we compared LVSP and ns-LBBP morphologies, according to physiologic ECG-based criteria obtained in cases in which transition was demonstrated during dynamic ECG manoeuvres using differential output pacing, with LVSP and ns-LBBP morphologies obtained in cases in which transition was observed during lead screwing-in. QRS transition during lead screwing-in was defined as shortening of paced V6-RWPT by ≥10 ms from LVSP morphology to ns-LBBP morphology, obtained with interrupted pacemapping, during mid to deep septal lead progression at the same target area, between two consecutive pacing manoeuvres, deep and deeper, with a QR/rSR′ pattern in V1 in both (figure 1). Paced V6-RWPT had to remain short and constant in the deeper LBBP position, at high and low output pacing. Results 305 patients with attempted LBBAP were screened. Any transition in QRS morphology occurred in 139 out of 290 successful procedures (47.9%). In 17 patients both QRS transitions (ns-LBBP to s-LBBP and LVSP to ns-LBBP) were observed. The study population consisted of 104 patients with transition from LVSP to ns-LBBP: forty-four patients with transition during lead screwing-in were compared to 60 cases with a demonstrated transition criterion during pacing manoeuvres. Average shortening in paced V6-RWPT was similar among study groups (17.3±6.8 ms vs 18.8±4.9 ms for transition during dynamic manoeuvres and lead screwing-in, respectively; p=0.719). Paced V6-RWPT, paced aVL-RWPT, V6-V1 interpeak interval and the recently described LBBP score, were similar for ns-LBBP morphologies in both QRS transition groups (table 1). LVSP morphologies showed longer V6-RWPT and aVL-RWPT, shorter V6-V1 interpeak interval and lower LBBP score punctuation, when compared to ns-LBBP morphologies, but no differences among the two QRS transition groups appeared. Sixty one out of 104 ns-LBBP morphologies (58.7%) met the 100% specific criterion of V6-RWPT < 75 ms or V6-V1 interpeak interval > 44 ms, and it was more frequently achieved in ns-LBBP morphologies obtained during lead screwing-in compared to those obtained during dynamic manoeuvres (70.5% vs 50%, respectively p=0.036). Conclusions during LBBAP procedure, QRS transition from LVSP to ns-LBBP can be observed as the lead penetrates deep into the IVS with interrupted pacemapping. Shortening of at least 10 ms in paced V6-RWPT may serve as marker of LBB capture.Figure 1Table 1

IMPACT OF FED RATE ON US DOLLAR - INDIAN RUPEE EXCHANGE RATE

Through this study, we attempt to understand the dynamics of Indian Rupee fluctuations against US Dollar that have been caused by the fluctuations in the Fed Rate. We tried to understand how the Fed Rate influence the Indian rupee - US Dollar exchange rate movements. After research work done via secondary method, we have observed that factors like differential interest rate, differential inflation rate, differential money supply in both the markets, differential output growth rate of both the countries, among others, are important factors which impact the fluctuation in the fed rate that accounts for approximately 91% variance of the Dollar-Rupee exchange rates and explain the exchange rate dynamics to a large extent. A few factors that were earlier considered to be important are not as significant as expected.

The Study on Single-Event Effects and Hardening Analysis of Frequency Divider Circuits Based on InP HBT Process.

The single-event effects (SEEs) of frequency divider circuits and the radiation tolerance of the hardened circuit are studied in this paper. Based on the experimental results of SEEs in InP HBTs, a transient current model for sensitive transistors is established, taking into account the influence of factors such as laser energy, base-collector junction voltage, and radiation position. Moreover, the SEEs of the (2:1) static frequency divider circuit with the InP DHBT process are simulated under different laser energies by adding the transient current model at sensitive nodes. The effect of the time relationship between the pulsed laser and clock signal are discussed. Changes in differential output voltage and the degradation mechanism of unhardened circuits are analyzed, which are mainly attributed to the cross-coupling effect between the transistors in the differential pair. Furthermore, the inverted output is directly connected to the input, leading to a feedback loop and causing significant logic upsets. Finally, an effective hardened method is proposed to provide redundancy and mitigate the impacts of SEEs on the divider. The simulation results demonstrate a notable improvement in the radiation tolerance of the divider.

WITHDRAWN: A 32-channels analog multiplexer with crosstalk compensation technique in 45nm CMOS

This paper presents a multiplexer that is capable of modulating 32-channels analog signal, which is a promising approach to simplify transmission system. An 8-channels prototype multiplexer with integral functionality and non-ideal factors is fabricated in 45 nm CMOS with area of 0.59 mm2, and verified in a QAM-256 system with 1.2V supply. The proposed multiplexer employs a semi-tree structure to achieve compromise between scale and speed. To relieve adverse effect caused by crosstalk between channels, the auxiliary reset compensation circuit combined with a dedicated timing sequence is utilized. Additionally, the proposed high-speed gate voltage bootstrap switch and high-bandwidth input buffer ensure that the signal remains linear during transmission. In the experimental result, the multiplexer can achieve a pulse width of at least 77ps in 8Gbps code rate, and the root mean square error due to nonlinearity between differential input and output is 1.869 %. The error vector magnitude (EVM) obtained by analyzing output versus input of multiplexer is less than 1.413 %.

A resonant high-pressure microsensor based on a composite pressure-sensitive mechanism of diaphragm bending and volume compression

In this paper, a composite pressure-sensitive mechanism combining diaphragm bending and volume compression was developed for resonant pressure microsensors to achieve high-pressure measurements with excellent accuracy. The composite mechanism was explained, and the sensor structure was designed based on theoretical analysis and finite element simulation. An all-silicon resonant high-pressure microsensor with multiple miniaturized cavities and dual resonators was developed, where dual resonators positioned in two resonant cavities with suitably different widths are used to perform opposite characteristics in pressure and the same characteristics at different temperatures, which can improve pressure sensitivities and realize temperature self-compensation by differential frequency output. The microsensor was fabricated by microfabrication, and the experimental results showed that the sensor had an accuracy of ±0.015% full scale (FS) in a pressure range of 0.1~100 MPa and a temperature range of −10~50 °C. The pressure sensitivity of the differential frequency was 261.10 Hz/MPa (~2523 ppm/MPa) at a temperature of 20 °C, and the temperature sensitivities of the dual resonators were −1.54 Hz/°C (~−14.5 ppm/°C) and −1.57 Hz/°C (~−15.6 ppm/°C) at a pressure of 2 MPa. The differential output had an outstanding stability within ±0.02 Hz under constant temperature and pressure. Thus, this research provides a convenient solution for high-pressure measurements because of its advantages, namely, large range, excellent accuracy and stability.

Optimization of multi-target continuous dynamic trajectory for unmanned aerial vehicles

In the problem of trajectory optimization for unmanned aerial vehicles (UAVs) passing through multiple target points, continuous velocity and acceleration in the process of optimization are essential for maintaining a feasible trajectory. This paper proposes a multi-segment holistic Bezier shaping method (MHBSM) for dynamic trajectory optimization. The MHBSM not only achieves holistic optimization of UAVs passing through a multi-target trajectory but also ensures high-order continuity at the junctions of trajectory segments. Unlike methods that generate non-dynamic trajectories by connecting arcs and straight lines (such as Dubins curves) without considering speed changes, MHBSM optimizes the trajectory while taking into account the dynamics of UAVs. The method optimizes the differential flat output space of a fixed-wing UAV dynamic model and transforms the dynamic optimization problem into a three-dimensional position optimization problem. The problem is then further transformed into an optimization of control points using the Bezier curve. The resulting trajectory satisfies the dynamic constraints. In comparison to the Gaussian pseudospectral method (GPM), MHBSM achieves similar optimization results with only a 2.58% difference, while requiring approximately 1.36% of the computational time on average. The MHBSM demonstrates excellent convergence performance while satisfying the constraints of continuous acceleration and obstacle avoidance.

Functional selectivity of Receptor Tyrosine Kinases regulates distinct cellular outputs.

Functional selectivity refers to the activation of differential signalling and cellular outputs downstream of the same membrane-bound receptor when activated by two or more different ligands. Functional selectivity has been described and extensively studied for G-protein Coupled Receptors (GPCRs), leading to specific therapeutic options for dysregulated GPCRs functions. However, studies regarding the functional selectivity of Receptor Tyrosine Kinases (RTKs) remain sparse. Here, we will summarize recent data about RTK functional selectivity focusing on how the nature and the amount of RTK ligands and the crosstalk of RTKs with other membrane proteins regulate the specificity of RTK signalling. In addition, we will discuss how structural changes in RTKs upon ligand binding affects selective signalling pathways. Much remains to be known about the integration of different signals affecting RTK signalling specificity to orchestrate long-term cellular outcomes. Recent advancements in omics, specifically quantitative phosphoproteomics, and in systems biology methods to study, model and integrate different types of large-scale omics data have increased our ability to compare several signals affecting RTK functional selectivity in a global, system-wide fashion. We will discuss how such methods facilitate the exploration of important signalling hubs and enable data-driven predictions aiming at improving the efficacy of therapeutics for diseases like cancer, where redundant RTK signalling pathways often compromise treatment efficacy.

On-Machine Calibration of Pitch Deviations of a Linear Scale Grating by Using a Differential Angle Sensor

A differential angle sensor is newly developed to calibrate the pitch deviations of a linear scale grating with a nominal pitch of 1.6 µm on an ultra-precision lathe. The angle sensor is composed of two angle detection units based on the laser autocollimation method. A collimated laser beam with a diameter of 1 mm, which is output from a laser diode with a wavelength of 685 nm, is projected onto the linear scale grating. The positive and the negative first-order diffracted beams from the scale are received by the two angle detection units, respectively. The X-slide of the ultra-precision lathe is employed to generate the necessary scanning motion for the calibration. Based on the fact that the pitch deviations will cause changes in the positive and the negative first-order diffraction angles, which are equal in magnitude and opposite in sign, the pitch deviations can be obtained from the differential output of the angle sensor. The tilt error motion of the X-slide, which is a major error factor in on-machine calibration, can also be removed in the differential output. The robustness of the developed angle sensor for on-machine calibration has been confirmed by testing the basic performances of the sensor on the machine tool. The feasibility of the on-machine calibration result of pitch deviations has been verified through comparing with the off-machine calibration result.

A high-gain wideband balun-LNA with multiple noise-optimized technique

This article reports a high-gain wideband low-noise amplifier (LNA) with single ended input and differential output for multi-standard wireless receiver operating in 0.2 to 7 GHz. The proposed balun-LNA is cascode structure with common-gate–common-source (CG–CS) balun load to achieve single to differential conversion. Focusing on improving the voltage gain, bandwidth and noise performance at the same time, several techniques are implemented in this balun-LNA. A current source is added shunting CG stage to relieve voltage headroom and improve gain and linearity. Wideband input matching is achieved by active shunt-shunt resistive feedback, together with the input series inductor. Moreover, feedforward and current-reuse technique are introduced to further optimize the noise performance. The proposed LNA has a measured voltage gain of 26 dB which is nearly 6 dB higher than other balun-LNA with same supply and process. Moreover, the minimum noise figure (NF) is 2.0 dB owing to multiple noise-optimized technique. The achieved input power at 1 dB gain compression point (IP1 dB) is −14 dB m at 1 GHz and input return loss (S11) is better than −10 dB across entire operating frequency range. IIP3 and IIP2 achieve −7 dBm and 25 dBm respectively, measured at 1 GHz. The power consumption is 15.5 mW at 1.2 V supply. The LNA is fabricated in 130 nm CMOS process and the active area is 0.097 mm2. The LNA achieves high voltage gain and wide operating frequency range with low NF, which can be reflected from the figure of merit (FOM) of 23.1.

A Low-Phase-Noise VCO With Common-Mode Resonance Expansion and Intrinsic Differential 2nd-Harmonic Output Based on a Single Three-Coil Transformer

In this article, we propose a voltage-controlled oscillator (VCO) with a single three-coil transformer, featuring a common-mode (CM) resonance expansion and intrinsic differential 2nd harmonic output. In addition to a conventional transformer-based class-F resonator, an internal third coil is added to manipulate the CM response. On one hand, it expands the CM resonance bandwidth, eliminating the need for manual harmonic tuning to align the 2nd harmonic resonance. On the other hand, it creates a simultaneous wideband differential response at the 2nd harmonic frequency, therefore, the power consumption of the extra frequency doubler can be saved. Using the proposed stacked 8-shape inductor topology, the third coil can be placed inside the class-F transformer without consuming an extra chip area. Fabricated in a 65-nm CMOS process, the measured tuning range of the proposed VCO is 21.1%, from 12.3 to 15.2 GHz. The proposed VCO achieves a peak phase noise (PN) performance of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula> 118.0 and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula> 111.9 dBc/Hz at 1 MHz offset for fundamental frequency and 2nd harmonic, respectively, the corresponding peak figure-of-merit (FoM) of which is 190.4 and 190.1 dBc/Hz, respectively. The VCO consumes a power of 8.4–9.6 mW, while occupying a small area of 0.06 mm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{2}$</tex-math> </inline-formula> thanks to the stacked 8-shape inductor topology.

Dual-Mode Thermal-Piezoresistive Coupled Resonators for Fast and Stable NIR Measurements with Differential Output

Dual-Mode Thermal-Piezoresistive Coupled Resonators for Fast and Stable NIR Measurements with Differential Output

A 0.46–0.52-THz fully-differential quasi-monostatic FMCW radar transceiver in 90-nm SiGe BiCMOS

A 0.46–0.52-THz fully-differential quasi-monostatic frequency-modulated continuous-wave (FMCW) radar transceiver was designed in a 90-nm SiGe bipolar CMOS technology with fT/fmax\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extit{f}_{ \ extit{T}}/{f}_{\ ext{max}}$$\\end{document} of 300/480 GHz. The transceiver chip has an area of 2.84 mm2\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ ext{mm}^{2}$$\\end{document}. A multiply-by-24 frequency multiplier chain is used to generate a 0.48-THz signal from a 20-GHz input signal. Two 0.48-THz push–push doublers are driven in quadrature for a differential output signal with a measured effective isotropic radiated power of up to -\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$-$$\\end{document}8.8 dBm at the transmitter at 0.47 THz. A differential subharmonic receiver mixer with a stacked quad topology achieves a measured system conversion gain of 7 dB and a measured single-sideband noise figure of 25.2 dB at 0.471 THz. FMCW radar measurements are performed using an on-board frequency source of a credit card-sized demonstrator at a bandwidth of 60 GHz.

Asymmetric calibration method on a back‐to‐back double‐loop differential magnetic field probe

AbstractThe asymmetric calibration method is a very interesting technology for differential output probes. It has been proven that the asymmetric calibration method (ACM) can broaden the application scenarios of the electromagnetic field dual probe. However, ACM is not verified on a back‐to‐back double‐loop differential magnetic field probing system. This paper calibrates a back‐to‐back double‐loop differential magnetic field probing system by inserting a connector for creating an asymmetry using ACM. The calibration results show that ACM can be used to calibrate an asymmetric back‐to‐back double‐loop differential magnetic field probing system. The calibration results are further verified by measuring the standing wave magnetic field, and the verification results show that the asymmetric calibration method is effective in eliminating the asymmetry of the back‐to‐back double‐loop differential magnetic field probing system and the work frequency band reaches up to 12 GHz.

The functional and molecular impact of triamcinolone acetonide on primary human bone marrow mesenchymal stem cells

Traumatic or degenerative joint pain is abundant in the population. Symptom relief by intra- and periarticular glucocorticoid administration is frequently used, however may have potentially devastating effects, changing the normal healing process of the joint. Mesenchymal stem cells (MSCs) are important for wound-healing processes due to their multipotency in regenerating osteoblasts, chondrocytes and adipocytes but also have immunomodulatory properties. The aim of this study was to investigate the impact of triamcinolone acetonide (TA) a common glucocorticoid administrated intra- and periarticularly, on human bone marrow derived MSC viability, functionality, multi-lineage differentiation and transcriptomic output. We found that TA treatment induced apoptosis and promoted adipogenesis while impairing chondrogenesis of MSCs. RNA sequencing indicated that TA modulated the inflammatory response of MSCs, which may have an impact on the immunologic environment where the inflammatory phase is a physiological part of the natural healing process. These data indicate that triamcinolone acetonide should be used with consideration bearing the patient’s outcome in mind, with the intention to optimize joint recovery and homeostasis.

Research on railroad locomotive driving safety assistance technology based on electromechanical coupling analysis

Abstract The reliability and effectiveness of a high-speed train’s operation depend heavily on the traction drive system. The purpose of this project was to construct an electromechanical connection model for a bullet train. The model contains the gear-to-gear connection, the differential output of the transmission, which circuits similar to those found in motors, and indirect power management. The purpose of this research is to investigate how modern railroad systems have implemented locomotive driving safety assistance technologies in order to get a deeper understanding of the effects that technological progress has on train operators. The purpose of this study is to learn how technological developments have altered the job of train operators. We will investigate the feasibility, compatibility, and potential consequences of introducing innovative technologies into established workflows. We will look at how well it works with current technologies, too. The current investigation has the authority to look at these issues. The ultimate goal of this project is to improve railway operations by providing essential insights for guaranteeing a balance between technological progress and human skill. The ultimate purpose of the project is to enhance the efficiency and security of railway operations. This may be achieved by strengthening the effectiveness and security of railway operations. In addition, the high-speed train model is simulated numerically to maintain that steady rate of travel, and grip, while slowing. The study determined that the stator current is the result of the interaction between the fundamental frequency and the higher harmonics of the rotational frequency. Furthermore, both frequencies can be detected even when traveling at a constant speed. Despite this, unless the rotation frequency is increased, they are often not visible. During traction, the root-mean-square (RMS) values of the rotor and stator currents are lower than that during braking. There is a significant rise in current when the wheels and brakes are first applied. The RMS value of the current lowers dramatically as grip and braking improve. As a result, it is essential to carefully consider how the change may influence the reliability of the system.

Turning a linear geometry force-balance accelerometer to a broadband seismometer: design, modeling, and evaluation

A new, improved approach in the design of broadband seismometers is presented. The design results in the implementation of a high performance, low cost, and simple-to-operate instrument. The proposed seismometer is based on a modified accelerometer followed by a continuous time integrator for providing velocity voltage output. It has a broadband response, flat in velocity from 120 s to 75 Hz, high sensitivity 1200 V/(m/s), and 40 Vpp differential output range. The acceleration integration method provides high performance at low frequencies, with self-noise well below the New Low Noise Model at the range 80 s–16 Hz. The mechanical system provides a perfectly linear response of its displacement sensing system. Evaluation, classification, and noise determination of the presented instrument are performed in terms of direct experimental measurements, simulations, and calculations based on raw data from the proposed sensor and from a commercial product with approximately equivalent performance. Its technical features and performance specifications guarantee accurate sensing of local events, with maximum power at the frequency range of 5 to 10 Hz, but also make it ideal for the recording of distant tectonic activity, where extremely weak motions at long periods are expected. The whole design is robust, lightweight, and weatherproof, comprising in this way a useful tool to geoscientists.