HardwareX最新文献_第10页

Fluid interaction study: Hydrodynamic robot (FISHR) — Expansion of bioinspired soft robotic fish 流体相互作用研究：流体动力机器人（FISHR）——仿生软体机器鱼的扩展

IF 2.1

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-07-16 DOI: 10.1016/j.ohx.2025.e00674

Montana Ligman, Kioumars A. Rezaie, Ramya Shah, Chris Keeter, Bryson Sutterfield, Mirjam Fürth

引用次数: 0

Compressive creep test rig for thermoplastic samples 热塑性试样压缩蠕变试验装置

IF 2.1

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-08-14 DOI: 10.1016/j.ohx.2025.e00687

Seyyed Saeed Vaezzadeh , Alireza Godsi Chafjiri , Victoria Nguyen , Xochitl Ramirez , Robert Kelley Bradley

{"title":"Compressive creep test rig for thermoplastic samples","authors":"Seyyed Saeed Vaezzadeh , Alireza Godsi Chafjiri , Victoria Nguyen , Xochitl Ramirez , Robert Kelley Bradley","doi":"10.1016/j.ohx.2025.e00687","DOIUrl":"10.1016/j.ohx.2025.e00687","url":null,"abstract":"<div><div>Creep occurs when a material is subjected to a constant load resulting in deformation. Thermoplastics are prone to creep and understanding creep behavior is important for predicting the long-term performance of thermoplastic parts that must bear load. Creep is a slow process and measuring it can take days, weeks, months, or longer. Accelerated methods to estimate creep behavior exist, but long-term testing produces the most accurate results. We have developed a creep test rig made from off-the-shelf parts that require minimal machining and is easy to operate. The instrument can provide students at the high school, community college, and university level with a simple entry point to materials research. The long run time means that multiple students can collaborate to acquire the data. The instrument helps expand the overall capacity of the scientific community to generate compressive creep data while simultaneously offering a low-cost way to engage students in research. The instrument can be used for traditional university, government, and industry research. Users may wish to operate the instrument in an air-conditioned space with minimal change in temperature and humidity, but some of the authors have recently published work demonstrating that creep measurement under changing ambient temperature and humidity can provide useful data as well (Vaezzadeh et al., 2025).</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00687"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A versatile low-cost data acquisition system for small rocket engine test bench 用于小型火箭发动机试验台的多功能低成本数据采集系统

IF 2.1

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-08-16 DOI: 10.1016/j.ohx.2025.e00686

Nathan Andreani Netzel, Daniel Strufaldi Batista, Francisco Granziera Jr., Marcelo Carvalho Tosin

{"title":"A versatile low-cost data acquisition system for small rocket engine test bench","authors":"Nathan Andreani Netzel, Daniel Strufaldi Batista, Francisco Granziera Jr., Marcelo Carvalho Tosin","doi":"10.1016/j.ohx.2025.e00686","DOIUrl":"10.1016/j.ohx.2025.e00686","url":null,"abstract":"<div><div>Small sounding rockets often carry scientific instruments to collect data in atmospheric environments. In the context of university-level education and research, their development offers students a hands-on, multidisciplinary platform to study propulsion, aerodynamics, electronic instrumentation, and others. A critical component of sounding rocket experimentation involves engine testing and validation, which typically requires the design and implementation of a dedicated test bench. These test benches are essential for ensuring experimental safety and reliability while enabling the acquisition of accurate performance data. This work presents the design and implementation of a versatile, low-cost data acquisition (DAQ) system specifically developed for a small rocket engine test bench. The system can measure thrust and pressure by interfacing with load cell sensors and pressure transducers. The approach also prioritizes modularity, allowing future expansion or adaptation to different engine configurations. It also balances affordability and functionality compared to commercial DAQs by leveraging cost-effective hardware and software. Experimental testing has demonstrated the system’s ability to deliver accurate and reliable measurements, with noise levels comparable to those of commercial counterparts. These results indicate the system can enable students and researchers to conduct experiments effectively and ensure safety.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00686"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144888754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OASIS-UROS: Open acquisition system for IEPE sensors - upgraded, refined, and overhauled software OASIS-UROS：用于IEPE传感器的开放式采集系统——升级、改进和大修软件

IF 2

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-05-02 DOI: 10.1016/j.ohx.2025.e00650

Oliver Maximilian Zobel , Johannes Maierhofer , Andreas Köstler , Daniel J. Rixen

{"title":"OASIS-UROS: Open acquisition system for IEPE sensors - upgraded, refined, and overhauled software","authors":"Oliver Maximilian Zobel , Johannes Maierhofer , Andreas Köstler , Daniel J. Rixen","doi":"10.1016/j.ohx.2025.e00650","DOIUrl":"10.1016/j.ohx.2025.e00650","url":null,"abstract":"<div><div><em>OASIS-UROS</em> continues the previously published <em>Open Acquisition System for IEPE Sensors (OASIS)</em>. While still building on the <em>ESP32</em> microcontroller, this version improves the overall performance by switching to an SD card caching system and upgrading the analog-digital converter to an <em>AD7606C-18</em>, which has a higher resolution, provides eight channels, oversampling, and software-adjustable voltage ranges. Also improved is the IEPE front-end and power supply, as well as the firmware of the acquisition system, which can now achieve a sample rate of up to 36kHz while sampling all eight channels. This paper documents the hardware and software of <em>OASIS-UROS</em> and provides all materials required to reproduce the open acquisition system. Lastly, the system was validated against commercial hardware and software in an experimental modal analysis context. This showed that the system performs close to the commercial one in some aspects with respect to the utilized test case. While <em>OASIS-UROS</em> cannot match the full performance of the commercial system, the developed system can be a viable alternative for students, people in academia, or smaller companies that have a constrained budget or require complete insight as well as adaptability of the hardware and software.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00650"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eight-channel high-speed electrical impedance tomography device implemented on a programmable system on a chip 在芯片上可编程系统上实现的八通道高速电阻抗断层扫描装置

IF 2

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-07-09 DOI: 10.1016/j.ohx.2025.e00667

Fausto Andrés Escobar , Carlos Felipe Rengifo , Víctor Hugo Mosquera

{"title":"Eight-channel high-speed electrical impedance tomography device implemented on a programmable system on a chip","authors":"Fausto Andrés Escobar , Carlos Felipe Rengifo , Víctor Hugo Mosquera","doi":"10.1016/j.ohx.2025.e00667","DOIUrl":"10.1016/j.ohx.2025.e00667","url":null,"abstract":"<div><div>This study proposes an electrical impedance tomography (EIT) device based on a programmable system on a chip (PSoc). The EIT-PSoC system is implemented using two PSoC 5LP platforms. A resistive phantom is used to study frame frequency (fps), accuracy (Ac), and signal-to-noise ratio (SNR). A saline phantom, along with both conductive and non-conductive objects, is employed to evaluate the system’s ability to detect changes in impedance distribution. Finally, the dielectric characteristics of the human lower pelvis is emulated using four agar phantoms, allowing an evaluation of the EIT-PSoC system’s performance in response to changes in fluid volume and conductivity. Experiments conducted on the resistive phantom to characterize the EIT-PSoC system demonstrate a frame frequency of 100 fps, a median SNR of 63.59 dB, and an accuracy of 95.39% when using a 0.98 mA sinusoidal current signal at 50 kHz. EIT image reconstruction shows that the proposed system can distinguish impedance changes in the saline phantom. Additionally, by utilizing the global impedance (GI) index and the agar phantoms, the EIT-PSoC system can detect changes in volume and conductivity, making this system a promising alternative for monitoring the volume and conductivity of biological fluids.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00667"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Open-source three-dimensional IoT anemometer for indoor air quality monitoring 用于室内空气质量监测的开源三维物联网风速仪

IF 2

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-05-31 DOI: 10.1016/j.ohx.2025.e00656

Elizabeth Ospina-Rojas , Juan Botero-Valencia , Daniel Betancur-Vasquez , Joshua M. Pearce

{"title":"Open-source three-dimensional IoT anemometer for indoor air quality monitoring","authors":"Elizabeth Ospina-Rojas , Juan Botero-Valencia , Daniel Betancur-Vasquez , Joshua M. Pearce","doi":"10.1016/j.ohx.2025.e00656","DOIUrl":"10.1016/j.ohx.2025.e00656","url":null,"abstract":"<div><div>Ventilation in an enclosed space can significantly influence people’s comfort, health, and safety. Poor ventilation can generate temperatures dangerous to health or obstruct the dispersion of environmental pollutants, such as toxic gases or pollution. Measuring indoor environmental conditions can thus help improve the quality of the environment and protect people’s health and comfort. This work proposes the design of an open-source anemometer to measure wind speed and direction in three dimensions. The purpose of this anemometer is to monitor wind conditions in enclosed spaces and environmental conditions related to air quality and temperature. The prototype uses an array of six unidirectional flow sensors, each pointing towards a different axis. Carbon dioxide (CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>), volatile organic compounds (VOC), temperature, humidity, pressure, and gas presence sensors are integrated to monitor indoor environmental conditions accurately. Measuring the vertical component of the wind provides more detailed information on wind conditions. Test results show that the device can detect variations in wind speed with a deviation of 0.25 m/s, detect changes in horizontal wind direction with a deviation of 3.7°, and detect vertical wind direction variations with a deviation of 3.02°. These measurements demonstrate that the proposed device is capable of detecting wind changes in three dimensions, validating its potential for detailed indoor airflow monitoring.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00656"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LevelWAN: a cost-effective, open-source IoT system for water level monitoring in highly dynamic aquatic environments LevelWAN：一个具有成本效益的开源物联网系统，用于高动态水生环境中的水位监测

IF 2.1

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-08-07 DOI: 10.1016/j.ohx.2025.e00685

Ilane Cherif , Frédéric Cherqui , Franck Perret , Bastien Bourjaillat , Lionel Lord , Jean-Luc Bertrand-Krajewski , Nicolas Walcker , Maria Gisi , Laëtitia Bacot , Oldrich Navratil

{"title":"LevelWAN: a cost-effective, open-source IoT system for water level monitoring in highly dynamic aquatic environments","authors":"Ilane Cherif , Frédéric Cherqui , Franck Perret , Bastien Bourjaillat , Lionel Lord , Jean-Luc Bertrand-Krajewski , Nicolas Walcker , Maria Gisi , Laëtitia Bacot , Oldrich Navratil","doi":"10.1016/j.ohx.2025.e00685","DOIUrl":"10.1016/j.ohx.2025.e00685","url":null,"abstract":"<div><div>The deployment of low-cost network sensors (LCNS) for environmental monitoring has become increasingly prevalent in recent years, offering a cost-effective solution for enhancing spatial sensor coverage while minimizing financial constraints. This study presents <em>LevelWAN</em>, a water level monitoring system specifically designed for highly dynamic aquatic environments such as rivers, ponds or lakes. <em>LevelWAN</em> is an open-source, robust, and cost-effective Internet of Things (IoT)-based monitoring solution incorporating an ultrasonic sensor. The electronic components were carefully selected for their affordability, reliability, and performance. The system underwent a fully autonomous, long-term (3-year) field test in a challenging and highly dynamic environment – a sewer system – to validate its robustness. Its accuracy was assessed against a high-precision professional device, demonstrating an error margin of less than 1 cm. Additionally, <em>LevelWAN</em> was developed with a user-friendly design to facilitate accessibility for non-experts, aligning with the needs of citizen science initiatives and educational applications.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00685"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Open Lab Starter Kit Small Laser V2–an open source Fab lab produced laser cutter 开放实验室入门套件小型激光v2 -一个开源Fab实验室生产的激光切割机

IF 2

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-06-11 DOI: 10.1016/j.ohx.2025.e00664

Daniele Ingrassia , Gaia Di Martino , J.C. Mariscal-Melgar , Mohammed Omer , Liane Sayuri Honda , Luisa Lange , Marc Kohlen , Manuel Moritz , Tobias Redlich

{"title":"Open Lab Starter Kit Small Laser V2–an open source Fab lab produced laser cutter","authors":"Daniele Ingrassia , Gaia Di Martino , J.C. Mariscal-Melgar , Mohammed Omer , Liane Sayuri Honda , Luisa Lange , Marc Kohlen , Manuel Moritz , Tobias Redlich","doi":"10.1016/j.ohx.2025.e00664","DOIUrl":"10.1016/j.ohx.2025.e00664","url":null,"abstract":"<div><div>The rise of Open Source manufacturing ecosystems is a multifaceted phenomenon, fueled by the proliferation of digital fabrication technologies, the collaborative spirit of the Open Source movement, and the creation of spaces like hackerspaces, and fab-labs. Part of the efforts is the Open Lab Starter Kit (OLSK), a set of machines designed to lower the barriers to entry for everyone. The OLSK Small Laser V2, an integral component of the OLSK, represents the second phase of design and prototyping within the scope of an Open Source Laser Cutter initiative. Being reproducibility and accessibility central goal of the OLSK, great attention was given not only to the design of the hardware, but also to the development of comprehensive documentation. The documentation, encompassing repositories and assembly manuals, assumes a pivotal role within the project framework, aiming to facilitate swift reproduction and user-friendly accessibility. Functionally, the OLSK Small Laser V2 is comparable with mainstream off-the-shelf laser cutters, demonstrating proficient cutting capabilities across commonly processed materials compatible with a 40 W CO<sub>2</sub> laser cutter, such as plywood, acrylics and Medium-Density Fiberboard (MFD), with a cutting area of 400 mm x 600 mm.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00664"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-cost, LoRa GNSS tracker for wildlife monitoring 用于野生动物监测的低成本LoRa GNSS追踪器

IF 2

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-07-02 DOI: 10.1016/j.ohx.2025.e00669

Adam F. Parlin , Ned A. Horning , Jason P. Alstad , Bradley J. Cosentino , James P. Gibbs

{"title":"Low-cost, LoRa GNSS tracker for wildlife monitoring","authors":"Adam F. Parlin , Ned A. Horning , Jason P. Alstad , Bradley J. Cosentino , James P. Gibbs","doi":"10.1016/j.ohx.2025.e00669","DOIUrl":"10.1016/j.ohx.2025.e00669","url":null,"abstract":"<div><div>The advent of GNSS tracking has allowed researchers to obtain detailed information on animal movement, which informs basic natural history and conservation management decisions. However, many devices are tailored to specific taxa thus limiting broader applicability. We present an open-source LoRaWAN (long range wide area network) GNSS (Global Navigation Satellite System) tracker, and an alternative commercial-off-the-shelf (COTS) development board global positioning system (GPS) tracker, a subset of the GNSS system. The COTS development board tracker provides a pathway for designing and implementing a general purpose LoRaWAN tracking unit, while the advantages of the Wildlife Movement Institute (WMI) tracker permit specific animal tracking and additional information to be collected, such as battery voltage, estimated precision error, and received signal strength intensity. Both units have documentation for setting up a LoRa application and network server and can be easily programmed using the Arduino Integrated Development Environment. To test the utility of these trackers in a LoRa data transmission application, we pilot tested the units on Eastern gray squirrels in Syracuse, New York, USA. Our trackers highlight the capability for customizable, open-source tracking technology that can be tailored to a suite of study organisms allowing researchers to design, develop, and deploy low-cost, specialized wildlife tracking equipment.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00669"},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing mobile EEG: Software development and performance insights of the DreamMachine 增强移动EEG: DreamMachine的软件开发和性能洞察

IF 2.1

HardwareX Pub Date : 2025-09-01 Epub Date: 2025-08-19 DOI: 10.1016/j.ohx.2025.e00689

Paria Samimisabet, Laura Krieger, Marc Vidal De Palol, Deniz Gün, Gordon Pipa

{"title":"Enhancing mobile EEG: Software development and performance insights of the DreamMachine","authors":"Paria Samimisabet, Laura Krieger, Marc Vidal De Palol, Deniz Gün, Gordon Pipa","doi":"10.1016/j.ohx.2025.e00689","DOIUrl":"10.1016/j.ohx.2025.e00689","url":null,"abstract":"<div><div>Electroencephalography (EEG) is widely used in fields such as neurology, cognitive neuroscience, sleep research, and mental health. It records brain electrical activity to study neurophysiological functions. Numerous EEG and mobile EEG systems are available. However, adherence to the standards set by the International Federation of Clinical Neurophysiology (IFCN) is essential for ensuring high-quality data collection in clinical environments. The DreamMachine, a mobile EEG device, complies fully with these standards, offering 24-channel recordings at 250 Hz, Bluetooth Low Energy (BLE), and capabilities for electrooculography (EOG) and electrocardiography (ECG). Its low cost makes it an accessible option for EEG studies. The software architecture of the open-source DreamMachine is detailed in this study. Focus is placed on data compression and communication between the device and its companion Android application. The details of the Android application’s features, including gain settings, bits per channel, filters, bit-shifting, and safety factors, are investigated. Subsequently, the system’s performance is evaluated through a standard eyes-open/eyes-closed experiment, comparing its results with a laboratory EEG system across a significant number of participants to assess the performance of the DreamMachine system.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"23 ","pages":"Article e00689"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0