The main challenge for the development of unmanned aircraft today is the cruising range of unmanned aircraft. One of the causes of limited cruising range is the weakness of the communication system between aircraft and ground station. In this study designed a system of data downlink integrated with adaptive control so that it can increase cruising range from unmanned aircraft. The method used in this research is the experimental method to get the design and pilot plan downlink data system combined with adaptive control to create intelligent data downlink device that can increase cruising range unmanned aircraft. From this research found that Kalman Filter is the best algorithm used in designing an adaptive downlink system.
GPS (Global Positioning System) is the popular system for navigation which assistance 32 satellites orbiting the earth. Currently, tracking positions using the Global Positioning System (GPS) is one of the best positioning tracking methods. However, GPS has a lot o f noise, so filters are needed to handle with noise on GPS. In this research, the simulation is done to extract data from GPS sensors using RLS algorithm. From the results o f identification and simulation, it can be concluded that the algorithm works well and need to analyze the advantages and disadvantages to be implemented on the downlink system designed. From the simulation results obtained that error estimation is convergent that is the longer the smaller.
GPS (Global Positioning System) is a system used for navigation and positioning with the help of 32 satellites that orbit the earth. GPS satellites emit radio waves to activate the GPS receiver on the Earth to determine the exact location, speed and time for all weather conditions. Currently, GPS has a vital role in navigation drone. However GPS have a lot of noise, it is necessary to overcome the noise filter on the GPS. In this research conducted a simulation of adaptive algorithm in extracting data from the GPS sensor. The method in this research is the Kalman Filter. From the identification and simulation can be concluded that the adaptive algorithm is designed to work well and need to be implemented on the downlink system. The simulation results showed that the error of algorithm has convergent properties are increasingly shrinking.
Sistem navigasi pada pengoperasian pesawat tanpa awak (Micro UAV) saat ini terdapat 2 cara yaitu dengan cara pandangan manual (line of sight) dan sistem autopilot. Sistem navigasi line of sight memiliki kelemahan jangkauan pesawat tanpa awak hanya pada radius 200 meter karena keterbatasan penglihatan dari pengendali. Metode autopilot adalah metode kendali pesawat dengan algoritma lock position and homing. Sistem autopilot bekerja dengan cara mencari koordinat posisi yang dituju kemudian kembali ke lokasi awal. Keunggulan teknologi ini adalah pesawat dapat menjangkau jarak yang cukup jauh. Akan tetapi metode ini memiliki kelemahan yaitu pesawat harus terbang tinggi dan pesawat belum bisa menghindari halangan seperti gedung pencakar langit maupun pepohonan tinggi. Dalam penelitian ini dirancang sebuah sistem tele-navigasi yang merupakan modifikasi sistem navigasi line of sight dan autopilot sehingga dapat menutupi kelemahan dari masing masing metode navigasi yang ada saat ini. metode penelitian yang digunakan dalam penelitian ini adalah metode eksperimen yaitu dengan membuat pilot plan sistem Tele-navigasi yang selanjutnya akan diuji dengan pesawat tanpa awak (micro UAV) jenis flying wing. Metode dokumentasi dan metode studi pustaka juga digunakan untuk melengkapi data teknis alat yang digunakan sehingga dapat dilakukan analisis mendalam terhadap performa alat yang dirancang. Kata kunci: line of sight, lock position and homing, autopilot, micro UAV.
The growth of the web services make people tend to think far ahead to discover new things on this technology. Increasing development and evolution of the various developments. Web service is one of media that suitable for system and platform communication, this service is considered as an efficient and effective communication facility. Web service make a system communication connected with Internet.The system is built with a proper analysis and effective design to help human to communicate each other. The design from start to end, is useful to help in writing the command of blogs which has a lot of comments. The comments that belong to many website/blogs is recorder into one report so that make the review become easier. It also can maximize the quality and the quantity of the website / blog.System is designed to facilitate the manager of the website/blog, especially in the pe-an-record comments entered. Manager of the website / blog just need to provide a form which connected to the database as a means of data entry comments.
Measurement o f human height is usually done with the help o f others. But with the Sobel method, measurement o f human height can be done alone. It can simplify the process o f measuring human height. The method is a development method robert sobel using filter HPF (high pass filter) that given a zero buffer. This method takes the principle o f the laplacian and gaussian function is known as a function to generate HPF. Applications designed using sobel method can be used for high meassure an object with a small error rate. Best distance o f 20 cm from the background to the object seen from the results o f the error rate.
Development of the world's information and communication technology-based growing rapidly. The development of these technologies has given rise to another dimension in human life, namely the need for computer use. Application of machine vision applications where a computer has the ability to understand the data in the form of image and make decisions based on data obtained from a real object, in this case is generated through the capture image from webcam. The images (digital images) of a real object through a webcam can be done in many ways capture the object. In this research object retrieval using an object of activity is captured on the webcam through the motions of objects. Digital image acquisition is performed with the tool in the form of software (Obtion Remote Version 1.0). Obtion (Object Detection) method works with the system of comparison between that time frame the previous frame captured by the camera at the time of recording the object. Comparison of the difference in the frame will be accommodated in a place that will be used to support the execution of an object by counting the number of pixels that exceed the value of the difference in number of field values with regulator frame to frame changes in the location of the object motionObtion Remote Version 1.0 will take a digital image of the object with trigger object motion detection performed. Digital image acquisition (capture the object with a webcam) will be done automatically if the object has been successfully detected. The detected object will be stored automatically in the directory are executed as a digital image storage.
The increase o f request brings large traffic to networks especially to data centers, large enterprises and portal websites. In addition, server provides more and more information by using applications. Most servers have to provide all-day services, and any service interruption or key data loss in communication will result in business loss. All these require high performance and high reliability on application services. However, the increase of server processing speed and memory access speed is greatly lower than that o f the network bandwidth and applications. In addition, the increase o f network bandwidth makes server resource consumption more serious. Therefore, the servers become the network bottleneck, and the traditional single device mode becomes the network failure point. Load balancing (LB) comes to provide a good solution by providing multiple servers form a server cluster, with each server providing the same or similar services. A load balancing application is managed at the front end o f the server cluster to distribute user requests in the server cluster according to pre-configured load balancing rules, provide services, and maintain the servers. Load balancing bring good advantage such as bring faster application, low cost, the available resources will not be wasted, and no high-end devices are needed for the new resources. It is expandability. When services are increasing, the system can satisfy the needs by adding servers, without affecting the existing services and reducing service quality. Load balancing also has high reliability. When a server fails, the LB application or LB device redistributes user requests to other servers in the same cluster, ensuring uninterrupted services.
Tulisan ini akan membahas manfaat thermo electric cooling sebagai pendingin dengan dukungan Mikrokontroler sebagai pengendali otomatis. Rancangan dapat dimanfaatkan pada sistem pengendalian peralatan, kinerja sistem terpengaruh panas, sistem-sistem lain yang berbaya jika bekerja pada suhu tinggi, serta dikendalikan dari jarak jauh. Kebutuhan perangkat keras rancangan ini adalah thermo electric cooling, Mikrokontroler AT89C51, IC LM 35, A/D Converter, penampil, dan Regulator 7805 serta didukung bahasa Assembler earth.asm. Sebelum perancangan dilaksanakan pengujian peralatan-peralatan, supaya sistem dapat berjalan dengan baik dan sesuai dengan fungsinya masing-masing. Untuk mengetahui kinerja system pendingin ini dengan cara mengamati data hasil simulasi pada tiga keadaan kondisi suhu prosesor dan heatsink prosesor pertama menggunakan heatsink standar, kedua water block dan ketiga water block ditambah thermo electric cooling. Dari hasil grafik menunjukkan bahwa system pendingin thermo electric cooling paling efektif dibandingkan dengan heatsink dan water block.Dengan melihan hasil tersebut rancangan pendingin berbasis mikrokontroler ini dapat sebagai tambahan pengetahuan bahkan dapat dikembangkan untuk memenuhi kebutuhan dan mengatasi permasalahan data/informasi yang banyak dibutuhkan.
Software design and hardware application system monitoring room webcam based aims to add value to the webcam to be used as part of the security system, implementing the work process of hardware and software monitoring system formed using delphi 7, analyzing the performance o f a stepper motor as the driving platform webcam and documenting object images and sounds in the room activities into a file format AVI (Audio Video Interleave). Webcams are used in this design is equipped with a standard webcam lighting lamps LED (Light Emitting Diode) with a USB data line, while the driver controls the webcam in the design o f this platform using unipolar type stepper motor controlled by a microcontroller, motor drivers and line interface RS232 to USB (Universal Serial Bus) converter. The installation o f the webcam to webcam platform play will lead to the right, left, stop rotating right and or to the left automatically. From the test results it can be concluded that the monitoring system and webcam based indoor stepper motor consists o f webcam applications and motor control applications platform which is separately because both applications use the USB and COM communication channels are opened simultaneously. As for the results o f the motion setting webcam platform proved to have a consistent degree of deviation for the wine and left turn kenanan but still require a series o f additional gears for smooth movement o f the platform and to reduce the effects o f shadow on motion pictures.