309 research outputs found

    Programming for energy monitoring/display system in multicolor lidar system research

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    The Z80 microprocessor based computer program that directs and controls the operation of the six channel energy monitoring/display system that is a part of the NASA Multipurpose Airborne Differential Absorption Lidar (DIAL) system is described. The program is written in the Z80 assembly language and is located on EPROM memories. All source and assembled listings of the main program, five subroutines, and two service routines along with flow charts and memory maps are included. A combinational block diagram shows the interfacing (including port addresses) between the six power sensors, displays, front panel controls, the main general purpose minicomputer, and this dedicated microcomputer system

    Portable Thermal Massaging Pad

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    Sitting can be rough on the body especially for long duration with wrong technique. Due to this situation, a person can experience stiffness, stress and soreness which will lead to loose of focus in their daily activities. To remedy the situation, a project call Portable Massaging Pad is developed as to alleviate the body aches. The massager is attached with a thermal conductor and be placed on the cushion seat. The innovation on the seat is expected that the Portable Massaging Pad can de-stress the user and can give comfort while traveling

    IoT analytics and agile optimization for solving dynamic team orienteering problems with mandatory visits

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    Transport activities and citizen mobility have a deep impact on enlarged smart cities. By analyzing Big Data streams generated through Internet of Things (IoT) devices, this paper aims to show the efficiency of using IoT analytics, as an agile optimization input for solving real-time problems in smart cities. IoT analytics has become the main core of large-scale Internet applications, however, its utilization in optimization approaches for real-time configuration and dynamic conditions of a smart city has been less discussed. The challenging research topic is how to reach real-time IoT analytics for use in optimization approaches. In this paper, we consider integrating IoT analytics into agile optimization problems. A realistic waste collection problem is modeled as a dynamic team orienteering problem with mandatory visits. Open data repositories from smart cities are used for extracting the IoT analytics to achieve maximum advantage under the city environment condition. Our developed methodology allows us to process real-time information gathered from IoT systems in order to optimize the vehicle routing decision under dynamic changes of the traffic environments. A series of computational experiments is provided in order to illustrate our approach and discuss its effectiveness. In these experiments, a traditional static approach is compared against a dynamic one. In the former, the solution is calculated only once at the beginning, while in the latter, the solution is re-calculated periodically as new data are obtained. The results of the experiments clearly show that our proposed dynamic approach outperforms the static one in terms of rewardsThis project has received the support of the Ajuntament of Barcelona and the Fundació “la Caixa” under the framework of the Barcelona Science Plan 2020-2023 (grant 21S09355-001)Peer ReviewedPostprint (published version

    การพัฒนาและการประยุกต์ใช้ระบบดาต้าแอกควิซิชั่นต้นทุนต่ำด้วย LabVIEW (DEVELOPMENT AND APPLICATION OF A LOW COST DATA ACQUISITION SYSTEM WITH LABVIEW)

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    บทความนี้นำเสนอการออกแบบระบบดาต้าแอกควิซิชั่นที่สามารถเชื่อมต่อกับคอมพิวเตอร์ผ่านทางพอร์ตอนุกรม โดยระบบดาต้าแอกควิซิชั่นจะถูกดำเนินการด้วยโปรแกรม LabVIEW ซึ่งสามารถควบคุมการรับส่งข้อมูลและแสดงค่าที่คอมพิวเตอร์ โปรแกรม LabVIEW เป็นโปรแกรมที่ถูกใช้กันอย่างกว้างขวางในรูปแบบการเขียนโปรแกรมแบบสัญลักษณ์รูปภาพซึ่งการออกแบบระบบจะอยู่ในรูปแบบบล็อกทำให้ใช้เวลาในการเขียนโปรแกรมน้อยกว่าเมื่อเปรียบเทียบการเขียนโปรแกรมในรูปแบบตัวอักษรโดยทั่วไป ระบบดาต้าแอกควิซิชั่นได้พัฒนาให้มีต้นทุนต่ำโดยการใช้ไมโครคอนโทรลเลอร์ตระกูล MCS-51 ระบบดาต้าแอกควิซิชั่นถูกนำไปประยุกต์ใช้ในโหมดการทำงานของดิจิตอลอินพุต และดิจิตอลเอาต์พุตซึ่งประสิทธิภาพเหมือนกับ ระบบดาต้าแอกควิซิชั่นที่มีราคาแพง ส่วนการประยุกต์ใช้ในโหมดอนาลอกอินพุตเพื่อไปตรวจวัดอุณหภูมิให้ผลความคลาดเคลื่อนเล็กน้อย เนื่องจากค่าความละเอียดของเอทูดีคอนเวอร์เตอร์มีจำนวนบิตน้อยกว่าระบบดาต้าแอกควิซิชั่นที่มีราคาแพงคำสำคัญ: ระบบดาต้าแอกควิซิชั่น ไมโครคอนโทรลเลอร์ แลบวิวThis article proposes the design of the data acquisition system (DAQ), which can be connected to a computer via serial port. The data acquisition system is implemented in LabVIEW, which is able to control the transmission of the data and display at the computer screen. LabVIEW is a widely used graphical programming environment which allows designing systems in a block-based manner in shorter times as compared to the commonly used text-based programming languages. The data acquisition system is developed to provide a low cost by using microcontroller MCS-51 family. DAQ can apply to the digital input and output mode. The efficiency is similar to a high cost data acquisition system. The application of the analog input mode for monitoring the temperature provides a small mistake because of the resolution of the A/D converter which is less than a high cost data acquisition.Keywords: Data Acquisition System (DAQ), Microcontroller, LabVIE

    POWER POINT TRACKING CONTROLLER FOR PHOTOVOLTAIC (PV) ARRAY

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    There is a need for the applications of photovoltaic (PV) system in Malaysia, due to the rising ofworld oil prices. Malaysia is well endowed with non - renewable and renewable energy source. Bulk ofour electricity demand is met by the use offossil - fuel based electrical power plants. TNB's current energy generation mix is approximately 35% coal, 34.7% natural gas and 18.26% hydro with the remaining 12.1% from oil, gas and diesel for a combined installed capacity of 10481 MW. A shift towards alternative energy such as solar energy, one of the abundant energy in Malaysia, is essential. There are many initiatives have been initiated in moving towards the development of solar energy in Malaysia. Use of PV in harnessing solar energy to generate electricity is a proven technology, but the utilization ofPV is not optimized. PV cell is expensive and the efficiency ofPV is relatively low. Agood tracking system is crucial in order to optimize PV performance in generating electricity. Thus, inthis project the focus is in designing a system that will track the sun for better PV performance. Ahybrid tracking system is introduced in this project, where it consists of two controlling methods. The automatic controller system will control the motion of the tracker in East - to - West direction, while the manual system will control North - to - South motion. As a conclusion, this project offers simple yet practical system that can help to improve the efficiency ofthe PV related system

    On the Use of XML in Medical Imaging Web-Based Applications

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    The rapid growth of digital technology in medical fields over recent years has increased the need for applications able to manage patient medical records, imaging data, and chart information. Web-based applications are implemented with the purpose to link digital databases, storage and transmission protocols, management of large volumes of data and security concepts, allowing the possibility to read, analyze, and even diagnose remotely from the medical center where the information was acquired. The objective of this paper is to analyze the use of the Extensible Markup Language (XML) language in web-based applications that aid in diagnosis or treatment of patients, considering how this protocol allows indexing and exchanging the huge amount of information associated with each medical case. The purpose of this paper is to point out the main advantages and drawbacks of the XML technology in order to provide key ideas for future web-based applicationsPeer ReviewedPostprint (author's final draft

    To Design a Bipedal Robot

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    The design of abipedal robot literally involves walking gait and control of balance. Controlling the direction of balance for atwo legged walking robot typically means mimicking the human form and its walking locomotion. The ultimate aim is to maintain an upright torso while advancing one leg in front of the other continuously without falling. The bipedal structure forces the writer to consider acombination of factors such as weight balancing, mechanism and degrees of freedom before designing the robot prototype. The writer has to apply fundamental knowledge about servo motor actuator, pulse width modulation, and PIC programming in accomplishing the project Independent work through self-discipline, selfmanagement and job co-ordination also needed to be exercise while undertaking the project This report consists of five important chapters that cover the project introduction, review of related literature, project methodology, discussion of result, and finally the conclusion. The introductory part briefly discusses the background study ofthe project and the existing studies on designing abipedal robot, more focus on the problem statement that covers problem identification and the significant of the projects, as well as the objectives of the project are stated and it describes more on the relevance and the feasibility of the project within the scope and time frame given. The review ofrelated literature on the project is enclosed in chapter two while the project methodology is covered in chapter three ofthe report. Findings related to the project along with its discussions are stated in chapter four of the report together with the conclusion and references used during the research works
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