scholarly journals Intelligent Backlash Control System Based on Laser Scanning

2018 ◽  
Vol 1 (1) ◽  
pp. 42
Author(s):  
Shengmin Zhang ◽  
Qiulian Li ◽  
Changying He
Keyword(s):  
Laser Scanning ◽  
Performance Test ◽  
Control Measure ◽  
Low Cost ◽  
Large Error ◽  
Rf Transceiver ◽  
Starting Point ◽  
Wide Range ◽  
Return Point

<p>In the traditional round-trip sports training and competition, the coach or the referee observes the pinch table to measure the athlete’s performance. Not only there is a large error, it will even lead to miscarriage of justice, staff labor intensity and efficiency. In order to solve these problems, the system uses the simple and easy way by using fingerprint identification module to collect athlete information, with low cost, wide application, easy to program the STM32F103C8T6 and ATMEL89S51 as the core control measure a wide range of detection time is short, high precision of the laser scanning athletes through the information to low power consumption, convenient and practical nRF905 RF transceiver starting point and the return point of the communication to the LED display circuit count and display, to automatically and accurately complete the athlete’s performance test. This will reduce the workload of the coach or the referee, but also improve the efficiency and quality of work.</p>

scholarly journals Diagnostic Capabilities of a Smartphone- Based Low-Cost Microscope

2020 ◽  
Vol 6 (3) ◽  
pp. 522-525
Author(s):  
Dorina Hasselbeck ◽  
Max B. Schäfer ◽  
Kent W. Stewart ◽  
Peter P. Pott
Keyword(s):  
Low Cost ◽  
Field Of View ◽  
Parasitic Diseases ◽  
Optical Parameters ◽  
Trade Off ◽  
Resource Limited ◽  
Wide Range ◽  
Diagnostic Applications ◽  
Diagnostic Capabilities

AbstractMicroscopy enables fast and effective diagnostics. However, in resource-limited regions microscopy is not accessible to everyone. Smartphone-based low-cost microscopes could be a powerful tool for diagnostic and educational purposes. In this paper, the imaging quality of a smartphone-based microscope with four different optical parameters is presented and a systematic overview of the resulting diagnostic applications is given. With the chosen configuration, aiming for a reasonable trade-off, an average resolution of 1.23 μm and a field of view of 1.12 mm2 was achieved. This enables a wide range of diagnostic applications such as the diagnosis of Malaria and other parasitic diseases.

scholarly journals Propuesta de Comunicación con Tecnología Óptica Pasiva en el Reparto “Carlos Manuel de Céspedes” de Bayamo, Cuba: opción de estudio para los universitarios

2017 ◽  
Vol 1 (8) ◽  
Author(s):  
Manleys Rodríguez Torres ◽  
Randy Verdecia Peña
Keyword(s):  
Access Network ◽  
University Student ◽  
Housing Sector ◽  
Power Budget ◽  
Starting Point ◽  
Wide Range ◽  
La Red ◽  
The University ◽  
Estudiantes Universitarios

El objetivo del trabajo consistió en diseñar una propuesta de comunicación para el reparto Carlos Manuel de Céspedes de Bayamo, Granma, Cuba. Para ello se tomó como campo investigativo 10 entidades y 1 061. Esta se basa en el despliegue de fibra óptica en el reparto en cuestión partiendo de la reutilización de la red de acceso existente. Dicho proyecto puede ser tomado como material de estudio por estudiantes universitarios. En la proposición de comunicación se concibe la inclusión de 9 MDU para dar servicios al sector residencial y 10 MDU para el sector empresarial, además, se incluye un splitter 1:32 y una OLT que se ubicaran en el sitio tecnológico y en el centro telefónico más cercano respectivamente. Para la marcha exitosa del trabajo se utilizaron métodos teóricos. La calidad de la propuesta de comunicación se verificó mediante el cálculo del presupuesto de potencia óptica, donde inciden las pérdidas provocadas por el equipamiento a utilizar. Se concluyó que con esta investigación se logra eliminar la demanda insatisfecha y permite que los clientes en sentido general puedan tener servicios de internet de banda ancha.  Palabras claves: Fibra óptica, sector residencial, sector empresarial, presupuesto de potencia, demanda insatisfecha, centro telefónico, sitio tecnológico   A proposal of communication with passive optic technology in the section “Carlos Manuel de Céspedes” of Bayamo, Cuba: an option of study for the university students Abstract  The objective of the work consisted in designing a communicative proposal in the section “Carlos Manuel de Cespedes”, in Bayamo, Cuba. There were taken 10 enterprises as the field researching as well as 1 061 s houses. It is based in the spread of optic fiber in that section taking as starting point the re-using of the existing access network. This project can be taken as a material fo studying the university student. In the proposal of communication it is glanced the inclution of 9 MDU to give service to the housing sector and 10 MDU for enterprises, it is also included 1:32 splitter and OLT that will be located in the technological place and in the closed telephone center. Fort he successful trend of the work there were used some theoratical methods, the quality of the proposal of communication was verified through the calculus budget of optic power, where the roduced power joint together collapse. It was concluded that with this research it is achieved to eliminated the unccessful demand it permits the overall users could have internet services wide range.  Keywords: optical fiber, housing sector, enterprise sector, power budget, unccessful demand, telephone center, technological place

scholarly journals Efficacy of Self Myofascial Release Technique to Reduce Frequency and Severity of Noctural Leg Cramp in Older Adults

2021 ◽  
pp. 193-197
Author(s):  
Samiksha V. Sonone ◽  
Deepali Patil ◽  
Om C. Wadhokar
Keyword(s):  
Older Persons ◽  
Trigger Point ◽  
Low Cost ◽  
Night Time ◽  
Prolonged Standing ◽  
Myofascial Release ◽  
Release Technique ◽  
Wide Range ◽  
Proprioceptive Neuromuscular Facilitation

Background: Nocturnal leg cramps (NLC) are involuntary muscle contractions of the calf muscles, hamstrings, or foot muscles that occur unexpectedly, episodically, and are unpleasant. Night time cramping affects about one-third of adults. Leg cramps can strike anyone at any age, although they are more widespread and often more severe as grow older. The majority of cramps are idiopathic, and the physiological cause behind them is unknown. Muscle cramps appear to be triggered by neuromuscular structures in muscle, tendons, and nerve fibres, according to some writers. Musculoskeletal issues linked to a sedentary lifestyle, as well as job postures, prolonged standing, and the western habit of sitting rather than squatting, have been implicated of generating cramps, particularly NLC. Patients with cramps have a higher risk of peripheral vascular disease than individuals without cramps. Stretching before bedtime can help older persons lessen the frequency and severity of nocturnal leg cramps. Stretching treatments, like as Myofacial Release, can help relieve NLC. Self-Myofacial release (SMFR) is a sort of Myofacial release (MFR) that is accomplished by the person rather than a therapist, and it is usually done with the help of a tool. Self-MFR is a low-cost, easily accessible approach for people to relieve muscle and fascia pain while also maintaining flexibility. Foam rollers and roller massage are two of the most used devices for self-MFR. MFR is used to treat a wide range of musculoskeletal disorders; it is used to treat a wide range of problems, and many types of treatment, such as trigger-point therapy and proprioceptive neuromuscular facilitation, fall under the myofascial umbrella. Aim and Objectives: To study the main impact of Self Myofascial Release (SMFR) to decreasing the duration of pain and improving Quality of Life in patients with NLC. Methodology: In this study total 30 patient with nocturnal leg cramps will receive Self Myofascial Release technique (SMFR), it will be including exercise which will be performed for 4 weeks twice a day and each for 5-10 mins. Discussion: This study is done to find out the effectiveness of Self Myofacial release in individual with nocturnal leg cramps (NLC). Conclusion: Conclusion of the study can be made based on the effect of Self Myofascial Release technique on patient with nocturnal leg cramps. 

scholarly journals An approach of developing low cost ARM based CNC systems by controlling CAN drives

2018 ◽  
Vol 224 ◽  
pp. 01020 ◽  
Author(s):  
Georgi M. Martinov ◽  
Akram Al Khoury ◽  
Ahed Issa
Keyword(s):  
Machine Tools ◽  
High Speed ◽  
Low Cost ◽  
Cnc Machine Tools ◽  
Application Layer ◽  
Cnc Machine ◽  
Servo Drive ◽  
Wide Range ◽  
Quality Of Products

Nowadays, there is a big demand on using small sized CNC machine tools, which have low price tag, wide range of implementations, low manufacturing costs and can be used for educational purposes. These machines can achieve casual manufacturing routines, like milling and drilling in applications, where there is no need for high speed performances and super quality of products. In this work, we proposed a model of CNC for these machines and analysed its components and efficiency. The model consists of three main layers: CNC system (application layer), ARM based microcomputer as CAN master and controller (connecting layer) and Servo-Drive Step Motors (actuating layer).

scholarly journals Testing the Sandblasting Process in the Manufacturing of Reference Spheres for Non-Contact Metrology Applications

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5187
Author(s):  
Víctor Meana ◽  
Eduardo Cuesta ◽  
Braulio J. Álvarez
Keyword(s):  
Laser Scanning ◽  
Low Cost ◽  
Coordinate Measuring Machine ◽  
Point Clouds ◽  
Laser Triangulation ◽  
Laser Sensor ◽  
Measuring Machine ◽  
Laser Triangulation Sensor ◽  
Triangulation Sensor

To ensure that measurements can be made with non-contact metrology technologies, it is necessary to use verification and calibration procedures using precision artefacts as reference elements. In this environment, the need for increasingly accurate but also more cost-effective calibration artefacts is a clear demand in industry. The aim of this work is to demonstrate the feasibility of using low-cost precision spheres as reference artefacts in calibration and verification procedures of non-contact metrological equipment. Specifically, low-cost precision stainless steel spheres are used as reference artefacts. Obviously, for such spheres to be used as standard artefacts, it is necessary to change their optical behavior by removing their high brightness. For this purpose, the spheres are subjected to a manual sandblasting process, which is also a very low-cost process. The equipment used to validate the experiment is a laser triangulation sensor mounted on a Coordinate Measuring Machine (CMM). The CMM touch probe, which is much more accurate, will be used as a device for measuring the influence of sandblasting on the spheres. Subsequently, the influence of this post-processing is also checked with the laser triangulation sensor. Ultimately, the improvement in the quality of the point clouds captured by the laser sensor will be tested after removing the brightness, which distorts and reduces the quantity of points as well as the quality of the point clouds. In addition to the number of points obtained, the parameters used to study the effect of sandblasting on each sphere, both in contact probing and laser scanning, are the measured diameter, the form error, as well as the standard deviation of the point cloud regarding the best-fit sphere.

scholarly journals National Metrology Infrastructure—Support for Analytical Laboratory Activity

Proceedings ◽  
2020 ◽  
Vol 55 (1) ◽  
pp. 21
Author(s):  
Mirella Buzoianu
Keyword(s):  
Reliable Measurement ◽  
Laboratory Activity ◽  
Starting Point ◽  
Wide Range ◽  
Measurement Results ◽  
End Use ◽  
Metrology Infrastructure ◽  
Manufacturing Science

Reliable, traceable, and comparable measurements provide a rational basis for evaluating the quality of any result and the starting point for laboratory accreditation. Accurate and compatible measurements are, at present, essential for manufacturing, science, and trade. Additionally, a wide range of aspects of the quality of life, from healthcare to sport, is underpinned by reliable measurement results. Starting from the role of a National Institute of Metrology (INM) in securing traceability of all measurements, regardless of their end-use or level of accuracy, some aspects related to the present state-of-art in the field of metrology in Romania are presented.

Measurement and Comparison of Force Effort During Friction Stir Welding in a Parallel Kinematic 5-Axis Milling Machine

2012 ◽  
Author(s):  
Arun Prasath Manogaran ◽  
Guillaume Racineux ◽  
Jean-Yves Hascoet
Keyword(s):  
Friction Stir Welding ◽  
Low Cost ◽  
Milling Machine ◽  
Friction Stir ◽  
Advantages And Disadvantages ◽  
Measuring Devices ◽  
Wide Range ◽  
Dynamic Measuring ◽  
And Control

Friction stir welding (FSW) is so quite promising that leads it to one of the preferred joining process for a wide range of applications especially for Aluminum. FSW machines are very expensive. The objective is to develop a simple and low cost technique to measure and control the force during FSW in a milling machine. Measurement of forces during welding is a difficult task. Many dynamic measuring devices such as dynamometers are available but each have their own advantages and disadvantages. A new approach to measure force while performing weld is discussed. First, incorporation of FSW in PKM 5-axes milling machine is done. The head of the machine is modified to support higher force levels that are generated during FSW. With the help of the NC-Controller, the force values are retrieved from the axes of the machine while performing weld through actuators. Forces were also measured from load cell and compared to estimate the quality of measurement.

scholarly journals Effect of growth regulators on productivity and quality of tomato crop under Volga delta conditions

2019 ◽  
pp. 36-40
Author(s):  
M. M. Abdelkader ◽  
M. Yu. Puchkov
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Low Cost ◽  
Dry Weight ◽  
Fruit Weight ◽  
Tomato Crop ◽  
Large Numbers ◽  
Wide Range ◽  
Cultivated Species

Relevance. Tomato considered a significant vegetable crop that plays a prominent role in the field of human health. At present, there are large numbers of tomato cultivars with a wide range of morphological and sensorial characteristics which determine their use. Farmers often use some chemical substances which have similar structure and activity with endogenous plant hormone called (exogenous) as a low-cost alternative to regulate plant growth and increase yield. Thus, the use of Plant Growth Regulators (PGRs) has become an important component of the agro-technical procedures for most cultivated species.Methods. This study aims to evaluate the effect of four growth regulators (Krezacin, Chitosan, Zircon and Energene) on growth, productivity and quality of two Russian tomato varieties (Moriana and Superjol) under delta Volga conditions. Each type applied three times on both cultivars (Soaking tomato seeds before sowing, spraying on plants at vegetative phase, spraying on plants at flowering phase with three replications.Results. The results showed that; combination between Energene and cultivar Moriana enhanced the most of studied characters (Germination – 83.1%, fresh weight of Arial parts – 241.9 g, dry weight – 74.4 g, Number of № flowers/plant – 51.0, № fruits /plant – 35.6, fruit set – 69.8%, plant yield – 2.44 kg, TSS – 5.1°Brix, Content of Ascorbic Acid – 25.6 mg/100 g); Interaction between “Energene x Superjol” gave the maximum value for Plant height (85.6 cm), Fruit weight (72.6 g); while “Krezacin x Moriana” registered the highest fruit dry matter (6.77%) and Acidity (0.53%); Applying Zircon on Cultivar Moriana increased number of leaves/plant (56.8) and nitrate contents (27.6 mg/kg); the maximum LAI (150.1 cm2 ) obtained from interaction between Chitosan and cultivar Superjol whereas, “Chitosan x Moriana” treatment gave the highest level of Carotenoids (4.12%). 

Indoor Ultrasonic 3D Seamless Location and Wireless Communication of Metal Can

2012 ◽  
Vol 157-158 ◽  
pp. 788-791
Author(s):  
Xian Zhong Chen ◽  
Ran Ran Li ◽  
Qing Wen Hou
Keyword(s):  
Wireless Communication ◽  
Power Consumption ◽  
Low Power ◽  
Low Cost ◽  
Low Power Consumption ◽  
Rf Transceiver ◽  
Indoor Space ◽  
Wide Range ◽  
Node Location ◽  
Ultrasonic Transmitter

A system with low-cost, low power consumption and wide range of ultrasonic positioning was designed. The node layout is the ultrasonic transmitter vertically installed on the top of the metal can as unknown node, the ultrasonic receivers as beacon nodes, 4 nodes installed on the ceiling and 4 nodes installed on the floor fixed position to receive ultrasonic. Ultrasonic sensor was designed with low power consumption microcontroller Ti MSP430F1611 and RF transceiver chip CC2420. Effective range is 10m, accuracy ± 2cm, launch angle , the system power 200 ~ 400uA/MIPS, 5V lithium battery-powered, Zigbee wireless communication protocol for data transmission. A new algorithm of node location module and Matlab software simulation result were established to achieve 3D seamless positioning of metal can in 20m*2m*2m indoor space.

scholarly journals FIRST ASSESSMENTS INTO THE USE OF COMMERCIAL-GRADE SOLID STATE LIDAR FOR LOW COST HERITAGE DOCUMENTATION

2021 ◽  
Vol XLIII-B2-2021 ◽  
pp. 599-604
Author(s):  
A. Murtiyoso ◽  
P. Grussenmeyer ◽  
T. Landes ◽  
H. Macher
Keyword(s):  
Solid State ◽  
Point Cloud ◽  
Laser Scanning ◽  
Low Cost ◽  
Sensor Technology ◽  
The Past ◽  
Geometric Quality ◽  
The Moment ◽  
Near Future

Abstract. Heritage documentation has benefitted greatly from significant developments in sensor technology during the past two decades. Miniaturisation of sensors is also an important aspect in the development of low cost sensors, always interesting in heritage projects where budgetary constraints are often present. Among these sensors, the solid-state lidar has begun to attract attention, partly due to its integration in Apple Inc.’s latest version of the iPhone and iPad series. We hypothesise that this type of sensor will see a lot of use in the near future; however, the question remains whether they are sufficient for heritage documentation purposes. In this paper, results from the 2020 iPad Pro SSL point cloud will be assessed and compared to more traditional techniques for 3D scanning (photogrammetry and terrestrial laser scanning). While understandably the geometric quality of benchmark-level techniques such as these remain undeniably better, at least for the moment, the paper concludes that SSL sensors may nevertheless be sufficient for some lower-precision applications.

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