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A low-cost autonomous and scalable hydroponics system for space farming
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-18 DOI: 10.1016/j.ohx.2025.e00625
Jae Hyeon Ryu , Jeonghyun Baek , Zarin Subah
An alternative food production system using hydroponics is proposed to grow vegetables in a controlled environment that is implementable in space. The proposed system is an autonomous, modular, scalable, and soilless food production platform (ASFP) that can be installed in a spacecraft by meeting requirements and constraints set by the National Aeronautics and Space Administration (NASA). A suite of Internet of Things (IoT) sensors was used to monitor indoor climate as well as water quality in ASFP. Average values of air temperature and relative humidity in the environmentally-controlled room are maintained between 20–24 °C and 48–62 %, while water quality components, including dissolved oxygen (DO, ppm), electrical conductivity (EC, µS/m), pH, and water temperature (WT, Celsius) are monitored by the IoT sensor in real-time during the growing period. Repeated measure analysis is also performed to evaluate the plant growth performance. The result indicates that plant growth is attributed significantly to pH and EC values. A real-time data visualization and sharing platform is another avenue for the space farming ecosystem in the years to come.
{"title":"A low-cost autonomous and scalable hydroponics system for space farming","authors":"Jae Hyeon Ryu ,&nbsp;Jeonghyun Baek ,&nbsp;Zarin Subah","doi":"10.1016/j.ohx.2025.e00625","DOIUrl":"10.1016/j.ohx.2025.e00625","url":null,"abstract":"<div><div>An alternative food production system using hydroponics is proposed to grow vegetables in a controlled environment that is implementable in space. The proposed system is an autonomous, modular, scalable, and soilless food production platform (ASFP) that can be installed in a spacecraft by meeting requirements and constraints set by the National Aeronautics and Space Administration (NASA). A suite of Internet of Things (IoT) sensors was used to monitor indoor climate as well as water quality in ASFP. Average values of air temperature and relative humidity in the environmentally-controlled room are maintained between 20–24 °C and 48–62 %, while water quality components, including dissolved oxygen (DO, ppm), electrical conductivity (EC, µS/m), pH, and water temperature (WT, Celsius) are monitored by the IoT sensor in real-time during the growing period. Repeated measure analysis is also performed to evaluate the plant growth performance. The result indicates that plant growth is attributed significantly to pH and EC values. A real-time data visualization and sharing platform is another avenue for the space farming ecosystem in the years to come.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00625"},"PeriodicalIF":2.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spi-VSTL: Image data collection platform using off-the shelf hardware for vertically supported crops in state-of-the-art glasshouses
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-15 DOI: 10.1016/j.ohx.2025.e00624
Namal Jayasuriya , Malith Weerasekara , Oula Ghannoum , Yi Guo , Wen Hu
Horticulture crop growers are moving from conventional to protected crops, aiming for quality food production utilising fewer resources. Skilled labour for monitoring and maintaining crops in these compact environments has been identified as a major cost and can be reduced using automated image-based crop monitoring. There is a range of protected cropping infrastructures targeting different types of crops. Image data collection platforms are needed to be tailored according to the infrastructure and nature of the crop. Available research or commercial-purpose image data collection platforms for indoor crops are mostly targeted at movable and small plants compared to vertically supported tall plants. Customising existing commercial systems for this specific type of crop is costly. This paper proposes a low-cost image data collection platform for monitoring vertically supported tall crops in order to reduce labour costs while expanding the monitoring tasks for maintaining better crop growth. Off-the-shelf hardware and electronic components accessible from Australia are used for this development. The proposed platform runs manually on concrete flow and on pipe rail systems found in state-of-the-art commercial glasshouse settings. The proposed motorised platform has been tested with 30 kg, and speed was measured as an average minimum of 0.06 ms−1 and an average maximum of 0.47 ms−1. The usability of the proposed design has been proved with a published data set and research on plant height estimation. Other use cases and room for further development are also discussed.
{"title":"Spi-VSTL: Image data collection platform using off-the shelf hardware for vertically supported crops in state-of-the-art glasshouses","authors":"Namal Jayasuriya ,&nbsp;Malith Weerasekara ,&nbsp;Oula Ghannoum ,&nbsp;Yi Guo ,&nbsp;Wen Hu","doi":"10.1016/j.ohx.2025.e00624","DOIUrl":"10.1016/j.ohx.2025.e00624","url":null,"abstract":"<div><div>Horticulture crop growers are moving from conventional to protected crops, aiming for quality food production utilising fewer resources. Skilled labour for monitoring and maintaining crops in these compact environments has been identified as a major cost and can be reduced using automated image-based crop monitoring. There is a range of protected cropping infrastructures targeting different types of crops. Image data collection platforms are needed to be tailored according to the infrastructure and nature of the crop. Available research or commercial-purpose image data collection platforms for indoor crops are mostly targeted at movable and small plants compared to vertically supported tall plants. Customising existing commercial systems for this specific type of crop is costly. This paper proposes a low-cost image data collection platform for monitoring vertically supported tall crops in order to reduce labour costs while expanding the monitoring tasks for maintaining better crop growth. Off-the-shelf hardware and electronic components accessible from Australia are used for this development. The proposed platform runs manually on concrete flow and on pipe rail systems found in state-of-the-art commercial glasshouse settings. The proposed motorised platform has been tested with 30 kg, and speed was measured as an average minimum of 0.06 ms<sup>−1</sup> and an average maximum of 0.47 ms<sup>−1</sup>. The usability of the proposed design has been proved with a published data set and research on plant height estimation. Other use cases and room for further development are also discussed.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00624"},"PeriodicalIF":2.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The PolyVent educational platform: An open mechanical ventilation platform for research and education
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-07 DOI: 10.1016/j.ohx.2024.e00615
Robert L. Read , Nathaniel Bechard , Victor Suturin , Antal Zuiderwijk , Michelle Mellenthin
The PolyVent is an open source mechanical ventilator meant for research and education. It prioritizes openness, modularity, repairability, and modifiability. An ESP32 microcontroller controls a proportional valve which precisely modulates pressure and flow from a mixing chamber into the airway. This chamber is fed with pressurized oxygen and medical air. Solenoid valves control both gas mixing and patient inflation. The PolyVent is controllable through a command-line interface over the serial port, a convenient point of access for researchers and instructors. The VentMon, a separate IoT-enabled spirometer, provides convenient instrumentation for classroom teaching and geodistributed research teams. A “cake-dome” design allows the PolyVent to operate with or without its transparent cover in place, for easy troubleshooting and instruction. An open footprint optimizes engineering change rather than compactness. The electronics are packaged into cards on a standardized backplane, allowing one to extend functionality through the addition of new cards. The VentOS open source software that drives the machine makes it a universal and modifiable research software platform. It is intended to be the medical gas production heart of an open source human respiration research and education ecosystem, and aims to be the starting point for open source medical ventilator designs.
PolyVent 是一种开源机械通风机,用于研究和教育。它将开放性、模块化、可维修性和可修改性放在首位。ESP32 微控制器可控制一个比例阀,该阀可精确调节从混合室进入气道的压力和流量。混合室由加压氧气和医用空气组成。电磁阀控制气体混合和患者充气。PolyVent 可通过串行端口的命令行界面进行控制,这为研究人员和教师提供了便利。VentMon 是一款独立的物联网肺活量计,为课堂教学和地理分布广泛的研究团队提供了便捷的仪器设备。蛋糕圆顶 "设计使 PolyVent 可以在有透明盖或无透明盖的情况下运行,便于故障排除和指导。开放式占地面积优化了工程变化而非紧凑性。电子元件封装在标准化背板上的板卡中,可通过添加新板卡扩展功能。驱动机器的 VentOS 开放源码软件使其成为一个通用的、可修改的研究软件平台。它旨在成为开源人体呼吸研究和教育生态系统的医用气体生产核心,并成为开源医用呼吸机设计的起点。
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引用次数: 0
OpenNavSense platform: A low-cost, open-source inertial navigation system for the evaluation of estimation algorithms
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-31 DOI: 10.1016/j.ohx.2024.e00621
Pablo Raul Yanyachi, Jorch Mendoza-Chok, Brayan Espinoza-Garcia, Juan Carlos Cutipa Luque, Daniel Yanyachi Aco Cardenas
Inertial navigation systems (INS) are widely used in commercial aviation, maritime navigation, and unmanned vehicle guidance. However, these systems are often sensitive, costly, and challenging to access. To address these limitations, an open-source, low-cost platform named INS OpenNavSense has been developed. This platform is built using FreeRTOS, an open-source real-time operating system (RTOS) that enables the microcontroller to run parallel individual threads (tasks), providing a practical and effective tool for implementing estimation algorithms that compensate for the use of low-cost microelectromechanical systems (MEMS) sensors instead of high-end sensors in professional INS. The main contribution of this work is the introduction of a FreeRTOS-based platform, which facilitates independent management of computational and processing tasks. The platform incorporates accelerometers, gyroscopes, magnetometers, Global Positioning System (GPS) module, and barometer sensors. Sensor data is calibrated and filtered to enhance accuracy, offering researchers a robust and reliable tool for testing their estimation algorithms. To validate this platform, the open-source Mahony library was used for attitude and heading reference system estimation, demonstrating the types of algorithms that can be tested. Tests were conducted with a drone carrying the platform as payload, and results from this low-cost INS were compared to the drone’s INS, showing both similarity and viability as a development platform.
{"title":"OpenNavSense platform: A low-cost, open-source inertial navigation system for the evaluation of estimation algorithms","authors":"Pablo Raul Yanyachi,&nbsp;Jorch Mendoza-Chok,&nbsp;Brayan Espinoza-Garcia,&nbsp;Juan Carlos Cutipa Luque,&nbsp;Daniel Yanyachi Aco Cardenas","doi":"10.1016/j.ohx.2024.e00621","DOIUrl":"10.1016/j.ohx.2024.e00621","url":null,"abstract":"<div><div>Inertial navigation systems (INS) are widely used in commercial aviation, maritime navigation, and unmanned vehicle guidance. However, these systems are often sensitive, costly, and challenging to access. To address these limitations, an open-source, low-cost platform named INS OpenNavSense has been developed. This platform is built using FreeRTOS, an open-source real-time operating system (RTOS) that enables the microcontroller to run parallel individual threads (tasks), providing a practical and effective tool for implementing estimation algorithms that compensate for the use of low-cost microelectromechanical systems (MEMS) sensors instead of high-end sensors in professional INS. The main contribution of this work is the introduction of a FreeRTOS-based platform, which facilitates independent management of computational and processing tasks. The platform incorporates accelerometers, gyroscopes, magnetometers, Global Positioning System (GPS) module, and barometer sensors. Sensor data is calibrated and filtered to enhance accuracy, offering researchers a robust and reliable tool for testing their estimation algorithms. To validate this platform, the open-source Mahony library was used for attitude and heading reference system estimation, demonstrating the types of algorithms that can be tested. Tests were conducted with a drone carrying the platform as payload, and results from this low-cost INS were compared to the drone’s INS, showing both similarity and viability as a development platform.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00621"},"PeriodicalIF":2.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11762629/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143048108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PolyWAG: Autonomous filtered water sampling for eDNA
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-30 DOI: 10.1016/j.ohx.2024.e00617
Riley Prince, Kai Roy, Nathan Jesudason, Marc Belinga, Jacob Field, Dylan Heiesy, Aaron Arvidson, Torrey Menne, John Selker, Chet Udell
Environmental DNA (eDNA) is an ideal way of researching aquatic environments and determining what species are present in an area the biodiversity of an area, and if any invasive or endangered species are present. Traditional sampling of eDNA consists of manually filtering water, which is labor and cost-intensive for remote locations. Furthermore, commercialized solutions are either expensive or require a field operator to function. We have built a battery-powered eDNA sampler capable of autonomous multi-sampling for a greatly reduced price compared to existing technologies. Environmental DNA collection contains 3 main components: environmental DNA must be preserved, the filtered volume must be accurate, and there must be no cross-contamination between samples. The sampler operates in this way separating eDNA via filters, preserving DNA, and recording the filtered volume per sample. Our PolyWAG eDNA sampler system is a water sampling device that collects DNA samples via 47 mm filter and provides a non-invasive, safe and autonomous means of eDNA collection. The sampler can hold 24 filters and is designed to be easily replaced and reusable. A browser application is used for real-time monitoring, scheduling tasks, and data logging for time, pressure, flow, and filtered volume. Additionally, the sampler design is openly published, modular and is constantly being tested to help us optimize our software and hardware to give us the best results. The 13-step sampling sequence helps reduce cross contamination significantly. Our machine can be deployed for an extended period. It is completely autonomous and costs around $3800 for components or $6000 including labor.
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引用次数: 0
A low-cost open-source 3D-printed mouse cradle suspension system for awake or anaesthetised 1H/31P magnetic resonance spectroscopy
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-30 DOI: 10.1016/j.ohx.2024.e00616
Saba Molhemi, Leif Østergaard, Brian Hansen
Awake mouse MRI and spectroscopy (MRS) are valuable techniques for studying biological questions without the confounding effects of anaesthesia. Currently, no off-the-shelf solution exists for awake mouse MRI/S. To address this, we present a Mouse Cradle Suspension System (MCSS) for awake mouse MRI/S. Our design is freely available and offers a low-cost 3D-printed setup compatible with a Bruker Biospec 94/20 scanner and commercially available 1H/31P surface- and volume-coils, such as coils from Bruker Biospin (T20025V3) and Rapid (O-XL-HL-094). While the focus here is measurements in awake mouse brain, the coils and the presented setup is suitable for both mouse and rat brain, and studies of mouse body organs. Moreover, the design is easily modifiable to suit other applications and hardware configurations. The MCSS reduces gradient-induced coil vibrations and supports cross-coil setups. It features an inner and outer rail system for easy insertion of the coil and customized mouse cradle into the scanner. The cradle is suitable for both anaesthetized and awake mouse scans and existing habituation protocols for awake mouse MRI/S. This MCSS design ensures a smooth workflow for awake mouse MRI/S. The cost is approximately 200€, achieved using 3D-printed and off-the-shelf components.
清醒状态下的小鼠核磁共振成像(MRI)和光谱学(MRS)是研究生物问题的重要技术,而不会受到麻醉的影响。目前,还没有现成的清醒小鼠 MRI/S 解决方案。为了解决这个问题,我们推出了用于清醒小鼠 MRI/S 的小鼠摇篮悬挂系统(MCSS)。我们的设计是免费提供的,它是一种低成本的 3D 打印装置,可与布鲁克 Biospec 94/20 扫描仪和市售的 1 H/31P 表面和体积线圈(如布鲁克 Biospin (T20025V3) 和 Rapid (O-XL-HL-094) 的线圈)兼容。虽然本文的重点是在清醒的小鼠大脑中进行测量,但线圈和所介绍的装置既适用于小鼠和大鼠大脑,也适用于小鼠身体器官的研究。此外,该设计很容易修改,以适应其他应用和硬件配置。MCSS 可减少梯度引起的线圈振动,并支持交叉线圈设置。它采用内外导轨系统,便于将线圈和定制的小鼠托架插入扫描仪。台座既适用于麻醉小鼠扫描,也适用于清醒小鼠扫描,还适用于清醒小鼠 MRI/S 的现有习惯化协议。这种 MCSS 设计可确保清醒小鼠 MRI/S 的工作流程顺畅。成本约为 200 欧元,采用 3D 打印和现成部件。
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引用次数: 0
Open-source implementation of polarisation-resolved single-shot differential phase contrast microscopy (pDPC) on a modular openFrame-based microscope
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-27 DOI: 10.1016/j.ohx.2024.e00622
Huihui Liu , Sunil Kumar , Edwin Garcia , William Flanagan , Jonathan Lightley , Christopher Dunsby , Paul M.W. French
We recently demonstrated polarisation differential phase contrast microscopy (pDPC) as a robust, low-cost single-shot implementation of (semi)quantitative phase imaging based on differential phase microscopy. pDPC utilises a polarisation-sensitive camera to simultaneously acquire four obliquely transilluminated images from which phase images mapping spatial variation of optical path difference can be calculated. pDPC microscopy can be implemented on existing or bespoke microscopes and can utilise radiation at a wide range of visible to near infrared wavelengths and so is straightforward to integrate with fluorescence microscopy. Here we present a low-cost open-source pDPC module that is designed for use with the modular open-source microscope stand “openFrame”. With improved hardware and software, this new pDPC implementation provides a real-time readout of phase across a field of view that facilitates optimisation of system alignment. We also provide protocols for background subtraction and correction of crosstalk.
{"title":"Open-source implementation of polarisation-resolved single-shot differential phase contrast microscopy (pDPC) on a modular openFrame-based microscope","authors":"Huihui Liu ,&nbsp;Sunil Kumar ,&nbsp;Edwin Garcia ,&nbsp;William Flanagan ,&nbsp;Jonathan Lightley ,&nbsp;Christopher Dunsby ,&nbsp;Paul M.W. French","doi":"10.1016/j.ohx.2024.e00622","DOIUrl":"10.1016/j.ohx.2024.e00622","url":null,"abstract":"<div><div>We recently demonstrated polarisation differential phase contrast microscopy (<em>pDPC</em>) as a robust, low-cost single-shot implementation of (semi)quantitative phase imaging based on differential phase microscopy. <em>pDPC</em> utilises a polarisation-sensitive camera to simultaneously acquire four obliquely transilluminated images from which phase images mapping spatial variation of optical path difference can be calculated. <em>pDPC</em> microscopy can be implemented on existing or bespoke microscopes and can utilise radiation at a wide range of visible to near infrared wavelengths and so is straightforward to integrate with fluorescence microscopy. Here we present a low-cost open-source <em>pDPC</em> module that is designed for use with the modular open-source microscope stand “<em>openFrame</em>”. With improved hardware and software, this new <em>pDPC</em> implementation provides a real-time readout of phase across a field of view that facilitates optimisation of system alignment. We also provide protocols for background subtraction and correction of crosstalk.</div></div>","PeriodicalId":37503,"journal":{"name":"HardwareX","volume":"21 ","pages":"Article e00622"},"PeriodicalIF":2.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773044/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143060751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3D printed dummy heads for crosstalk cancellation studies in bone conduction 用于骨传导中串声消除研究的3D打印假头。
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-25 DOI: 10.1016/j.ohx.2024.e00618
Irwansyah , Sho Otsuka , Seiji Nakagawa
Thanks to affordable 3D printers, creating complex designs like anatomically accurate dummy heads is now accessible. This study introduces dummy heads with 3D-printed skulls and silicone skins to explore crosstalk cancellation in bone conduction (BC). Crosstalk occurs when BC sounds from a transducer on one side of the head reach the cochlea on the opposite side. This can disrupt binaural cues essential for sound localization and speech understanding in noise for individuals using BC hearing devices. We provide a step-by-step guide to constructing the dummy head and demonstrate its application in canceling crosstalk. The 3D models used in this study are freely available for replication and further research. Several dummy heads were 3D-printed using ABS for the skull and silicone skins of varying hardness, with a 3-axis accelerometer at the cochlea location to simulate inner ear response. Since the cochlea is inaccessible in humans, we targeted crosstalk cancellation at the mastoid, assessing if this cancellation extended to the cochlea within the dummy heads. We compared these results with our previous experiments conducted on seven human subjects, who had their hearing thresholds measured with and without crosstalk cancellation, to evaluate if the dummy heads could reliably replicate human crosstalk cancellation effects.
由于价格实惠的3D打印机,制造复杂的设计,如解剖学上精确的假头现在是可以实现的。本研究引入带有3d打印头骨和硅胶皮肤的假头,以探索骨传导(BC)中的串音消除。当来自头部一侧换能器的BC声音到达另一侧耳蜗时,就会发生串扰。对于使用BC助听器的人来说,这可能会破坏对声音定位和语音理解至关重要的双耳线索。我们提供了一个循序渐进的指南来构建假头,并演示了它在消除相声中的应用。本研究中使用的3D模型可以免费复制和进一步研究。使用ABS对颅骨和不同硬度的硅胶皮肤进行3d打印,在耳蜗位置安装3轴加速度计来模拟内耳反应。由于人类耳蜗是不可接近的,我们以乳突处的串音消除为目标,评估这种消除是否延伸到假头内的耳蜗。我们将这些结果与我们之前对7名人类受试者进行的实验进行了比较,以评估假头是否能够可靠地复制人类相声抵消的效果。
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引用次数: 0
SyncGenie: A programmable event synchronization device for neuroscience research SyncGenie:用于神经科学研究的可编程事件同步设备。
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-24 DOI: 10.1016/j.ohx.2024.e00619
Ludvik Alkhoury , Giacomo Scanavini , Petras Swissler , Sudhin A. Shah , Disha Gupta , N. Jeremy Hill
In neuroscience, accurately correlating brain activity with stimuli and other events requires precise synchronization between neural data and event timing. To achieve this, purpose-built synchronization devices are often used to detect events. This paper introduces SyncGenie, a programmable synchronization device designed for a range of uses in neuroscience research—primarily as a “trigger box” to align neurophysiological data with physical stimulus events, among other possibilities. It can support both hardware-triggered and software-triggered pulse synchronization and can even serve as a cost-effective digitizer for real-time analysis of analog signals. We provide the complete circuit-board designs, 3D models, and Arduino code necessary to build and use SyncGenie. The board is designed for easy manufacturing and assembly, with components that can be seamlessly soldered. It includes a range of connector types required for common applications, such as 3.5 mm TRS, D-sub25, BNC, and JST-XH. Additionally, SyncGenie features a user-friendly interface that allows for experiment-specific adjustments without requiring coding expertise. Its programmability, supported by our public-domain Arduino library, provides the flexibility to adapt SyncGenie to diverse experimental protocols. Overall, SyncGenie offers enhanced functionality at a lower cost relative to commercially available trigger boxes.
在神经科学中,准确地将大脑活动与刺激和其他事件联系起来需要神经数据和事件时间之间的精确同步。为了实现这一点,通常使用专用的同步设备来检测事件。本文介绍了SyncGenie,一种可编程同步设备,设计用于神经科学研究的一系列用途,主要作为“触发盒”,将神经生理学数据与物理刺激事件对齐,以及其他可能性。它可以支持硬件触发和软件触发的脉冲同步,甚至可以作为一个具有成本效益的数字化仪,用于实时分析模拟信号。我们提供构建和使用SyncGenie所需的完整电路板设计,3D模型和Arduino代码。该板的设计便于制造和组装,组件可以无缝焊接。它包括一系列常见应用所需的连接器类型,如3.5 mm TRS, D-sub25, BNC和JST-XH。此外,SyncGenie具有用户友好的界面,允许实验特定的调整,而不需要编码专业知识。它的可编程性由我们的公共领域Arduino库支持,提供了使SyncGenie适应各种实验协议的灵活性。总的来说,SyncGenie以较低的成本提供了增强的功能,相对于市售的触发盒。
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引用次数: 0
The WOCA negative pressure wound therapy device designed for low resource settings WOCA负压伤口治疗装置专为低资源设置。
IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-20 DOI: 10.1016/j.ohx.2024.e00620
Arjan J. Knulst , Salome Berger , Jorijn van den Boom , Inge Bosch , Noa Nicolai , Suraj Maharjan , Eileen Raaijmakers , Chang-Lung Tsai , Lisa van de Weerd , Jenny Dankelman , Jan-Carel Diehl
Negative Pressure Wound Therapy (NPWT) is a treatment that promotes healing of chronic wounds. Despite high prevalence of chronic wounds in Low- and Middle-Income Countries (LMICs), NPWT devices are not available nor affordable. This study aims to improve chronic wound care in LMICs by presenting the Wound Care (WOCA) system, designed for building, testing and use in LMICs. Design requirements were formulated using input from literature, ISO standards, and wound care experts. The WOCA design was developed to provide safe, portable, user-friendly and affordable NPWT to patients in LMICs. The design features an adjustable operating pressure ranging from −75 to −125 mmHg, a battery for portability, a 300 ml canister, overflow protection, and system state alarms. An Arduino controls the pressure and monitors the system state. Three prototypes were developed and built in Nepal, and their performance was evaluated. Pressure control was 125 ± 10 % mmHg, internal leakage was 7.5 ± 4.3 mmHg/min, reserve capacity was 189 ± 16.9 ml/min, and overflow protection and alarm systems were effectively working. Prototype cost was approximately 280 USD. The WOCA demonstrates to be a locally producible NPWT device that can safely generate a stable vacuum. Future research will include clinical trials situated in LMICs.
负压伤口治疗(NPWT)是一种促进慢性伤口愈合的治疗。尽管慢性伤口在低收入和中等收入国家(LMICs)的患病率很高,但NPWT设备既没有也负担不起。本研究旨在通过提出伤口护理(WOCA)系统来改善中低收入国家的慢性伤口护理,该系统设计用于中低收入国家的建设、测试和使用。设计要求是根据文献、ISO标准和伤口护理专家的意见制定的。WOCA设计旨在为中低收入国家的患者提供安全、便携、用户友好且价格合理的NPWT。该设计具有-75至-125 mmHg的可调工作压力,便携电池,300毫升罐,溢流保护和系统状态警报。Arduino控制压力并监控系统状态。在尼泊尔开发和建造了三架原型机,并对它们的性能进行了评估。压力控制125±10% mmHg,内漏7.5±4.3 mmHg/min,备用容量189±16.9 ml/min,溢流保护和报警系统有效工作。原型成本约为280美元。WOCA证明是一种本地生产的NPWT装置,可以安全地产生稳定的真空。未来的研究将包括在中低收入国家进行临床试验。
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引用次数: 0
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