14 research outputs found
Analisis Penempatan Node Sensor Terhadap Jarak Pengambilan Data Pada Media Tanah
Get PDFBadan Nasional Penanggulangan Bencana (BNPB) describes the number of casualties, property and environment resulting from landslides. Wireless sensor network technology can minimize the loss of life, property and environment [1, 2]. Wireless sensor networks are prone to interference, especially in data transmission. Transmission of wireless sensor data can be disrupted if material is blocked. Slides that are easily landslide in Indonesia consist mainly of soil material [3]. Soil is one material that can interfere with wireless sensor data transmission and is influenced by aspects such as temperature, weather, soil composition, soil moisture, and soil homogeneity [4, 5]. This study focuses on analyzing the effect of sensor node placement on data transmission distance on WiFi-based soil material. The results of the analysis of the placement of sensor nodes planted in the ground resulted in an average percentage attenuation of signal strength every 5 cm depth increase in soil material was 4.90%
Pengembangan Sistem Ground Control Station Berbasis Internet Webserver pada Pesawat Tanpa Awak
Get PDFIn unmanned aerial operations, the ground control station duties as a monitoring and command station so that operators on land can send mission orders, monitor the mission's course and monitor the condition of the UAV during the mission. It is necessary to have a GCS system capable of connecting with UAV that not limited with control transmitter range.This research develops GCS system using internet network and web server based. the system consists of two units, namely flying units and GCS units. The flying unit consists of Raspberry pi, modem, webcam, ADAHRS module and quadrotor with MultiWii controller. on the GCS unit consists of Raspberry pi connected on the internet network with 10Mbps download speed and 1.5Mbps upload.The GCS system can display aircraft conditions, stream video and perform command controls. Configure streaming video for delay time of no more than one second with 240x144 pixel resolution, 256kbps maximum bitrate and 5 fps framerate. This configuration runs at a 1.1 Mbps upload speed with a percentage of 93.83% bitrate compression. Aircraft condition data sent to GCS is optimal if internet bandwidth exceeds the bitrate of streaming video used on the syste
Internet of things dan aplikasinya: Menghubungkan dunia fisik dan digital untuk kehidupan yang lebih cerdas
No full textBuku Internet of Things dan Aplikasinya Menghubungkan Dunia Fisik dan Digital untuk Kehidupan yang Lebih Cerdas Buku Teknik Informatika berjudul Buku Internet of Things dan Aplikasinya Menghubungkan Dunia Fisik dan Digital untuk Kehidupan yang Lebih Cerdas merupakan karya Ahmad Ashari, dkk. Buku ini memuat tentang Internet of Things (IoT) secara mendalam, mulai dari konsep dasar hingga aplikasi praktis yang mengubah cara manusia berinteraksi dengan teknologi. Sebagai salah satu inovasi terpenting di era digital, IoT memiliki potensi besar untuk menciptakan perubahan positif di berbagai sektor, seperti kesehatan, pertanian, kota pintar, dan industri. Buku ini dirancang sebagai panduan awal untuk memahami dan mengeksplorasi perkembangan IoT, sekaligus menginspirasi pembaca untuk terus belajar, beradaptasi, dan berinovasi dalam menghadapi tantangan dan peluang di era teknologi modern
Rancang Bangun Sistem Deteksi Posisi Objek dalam Rumah dengan Metode Support Vector Machine Berdasar Kekuatan Sinyal Wi-Fi
Get PDF Indoor Positioning System (IPS) is an object tracking technology that utilizes networks such as Wireless Fidelity (Wi-Fi) to determine the location of an object. IPS is closely related to the implementation of the Internet of Things (IoT) to carry out an order in a smart home. However, the weakness of IPS is the attenuation of the signal received when the tag or target moves to a room that borders another room, causing errors in tracking. The IPS implementation will be carried out based on the 2.4 GHz Wi-Fi signal emitted from the ESP32.The research will use the trilateration method which requires three sink nodes to receive signal strength, then a machine learning algorithm, namely Support Vector Machine (SVM), to classify rooms in three different scenarios, namely when the target is stationary, moving between rooms, and is on the edge room adjacent to another room.The results of the test show that the three scenarios provide different levels of accuracy. The accuracy of the system on the target scenario while still in the room reaches 100%, on the target moving room scenario reaches 86.15%, and on the target scenario that is at the edge of the room adjacent to another room reaches 80%
Swarm Intelligence Autotune for Differential Drive Wheeled Mobile Robot
No full textDifferential Drive Wheeled Mobile Robot (DDWMR) is a nonholonomic
robot with constrained movement. Such constraint makes robot position
control more difficult. A closed-loop control system such as PID can control
robot position. However, DDWMR is a Multiple-Input-Multiple-Output
system. There will be many feedback gains to be tuned, and the wrong value
will make the system unstable. Therefore this research proposes an offline
autotune method to choose optimal feedback gain that minimizes a fitness
function. The fitness function uses Integral Absolute Error (IAE) and Integral
Time Absolute Error (ITAE). These works propose to autotune feedback gain
for DDWMR Jetbot, which implements a PI control system with six feedback
gains. The methods used to tune the feedback gain are Particle Swarm
Optimization (PSO) and Bird Swarm Algorithm (BSA). There are four
different scenarios to do the autotune. The autotune result performance shows
that those two methods can find an optimal gain to make the robot follow four
different continuous trajectories without much trajectory deformation. PSO
and BSA can do an autotune PI gain with six variables to minimize the Integral
Absolute Error (IAE) and Integral Time Absolute Error (ITAE
Penerapan Kawat Litz Pada Motor BLDC Untuk Peningkatan Gaya Dorong Per Daya
Get PDFCopper loss can cause a decrease in performance in BLDC motors, so efforts will be made to reduce copper loss by using Litz wire. Additionally, there have been studies that simulate the performance of Litz wire, but they have not been directly applied, especially to propeller thrust. The objective of this research is to implement Litz wire in a BLDC motor and analyze its performance for an increase in propeller thrust per power. The BLDC motor is wound with single wire and Litz wire. The analysis conducted compares the resistance, copper loss, thrust force, and thrust-to-power ratio of the single wire and Litz wire with the same wire cross-sectional area. The BLDC motor is equipped with a propeller to measure the thrust force. The average resistance of the single wire is 0.43 Ohms, while the Litz wire is 0.38 Ohms. The copper loss of the Litz wire is 7% lower than a single wire. The Litz wire exhibits a 3% improvement in thrust force compared to the single wire in the testing. The thrust-to-power ratio of the Litz wire is also 3% better during the testing.
Path Tracking and Position Control of Nonholonomic Differential Drive Wheeled Mobile Robot
Get PDFDifferential drive wheeled mobile robot (DDWMR) is one example of a robot with a constrained movement, Multiple Input Multiple Output (MIMO), and nonlinear system. Designing a low resource position and heading controller using linear MIMO methods such as LQR became a problem because of the linearization of robot dynamics at zero value. One of the solutions is to design a MIMO controller using a Single Input Single Output (SISO) controller. This work design a controller using PID for DDWMR Jetbot and selects the best feedback gain using different scenarios. The designed controller manipulates both motors by using calculated control signal to achieve a complex task such as path tracking with robot position in x-Axis, y-Axis, and heading angle as the feedback. The priority between position and heading angle can be adjusted by changing three feedback gains. The controller was tested, and the best gain was selected using Integral Absolute Error (IAE) metrics in a path tracking task with four different path shapes. The proposed methods can track square, circle, and two types of infinity shape paths, with the less well-formed shape being the four edges square path
Sistem Pemantauan Pertumbuhan Anggrek Berdasarkan Pengolahan Citra Digital
Get PDFGrowth monitoring and plant protectionis the major aspect of horticulture because its productivity depends on the health of the plants. Manual direct measurement methods tend to be destructive towards observed plants. In this research, a smart non-contact growth monitoring system was implemented on a chamber with orchid plants asthe objectsobserved. The images of the orchids were taken and became the input of the system to be processed to estimate the height of the plants.The contour of the orchid plant as the object was obtained and the height was calculated based on the highest and the lowest contour.The result shows that the developed system is proven to be capable of measuring orchid’s height in real-time with accuracy more than 95,7%. Thus, this system will effectively help farmers to improve the quality and the quantity of the plant’s productivity
