Journal of Telematics and Informatics
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147 research outputs found
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Forward and Inverse Kinematic on Wheeled Soccer Robot
Get PDFIn this research rotary encoder sensor and gyroscope sensor are used as main sensor for moving wheeled soccer robot. Rotary encoder is used to measure the speed and distance of each robot wheel and the gyroscope is used to measure the orientation of the robot, then both of them expressed in cartesian diagrams (x, y, θ). A rotary encoder type magnetic incremental encoder is used in this research and it mounted on each wheel. Inverse kinematic and forward kinematic are used to control the movement of the robot when positioning in the field or making decision when kicking the ball towards the opponent’s side and the other decision. From the test results, robot can move to any direction from the starting position to the end position with a different robot orientation and robot can measure the coordinates of the robot with average error of x = 5.37%, y = 5.2%, and Theta = 0.26%. The robot is also able to move in the direction of the coordinates given with a traveling time of 3-4 seconds
Tuning PID on Cascade Control Level Deareator Steam Power Plant
Get PDFDeaerator is an important component in the process of steam power plant, which serves to remove gases contained in boiler water. The level of the deaerator tank should be maintained in accordance with the specified set point. If the level is too low it will effect to disrupt the performance of the boiler feed pump. If the level is too high it will lead to overflow and disrupt the steam production process. This study discusses the analysis of Proportional-Integral-Derivative (PID) cascade control using tuning Ziegler-Nichols (ZN) and Tyerus Luyben (TL) methods to control deaerator level. The tuning parameter in the primary loop and the secondary loop will be varied on the cascade loop control is used to analyze the performance of PID control. To perform verification system, such as Peak Time (Tp), Overshoot (Mp), Error Steady State (ESS) and Settling Time (Ts) a simulink Matlab is proposed. Four tuning PIDs on the cascade loop are: ZN-ZN, ZN-TL, TL-TL, TL-ZN get results that are able and get stability to follow the set point level. Tuning PID TL-TL method has the most ideal response result in use for deaerator level control at steam power plant because it has the lowest overshoot response of all three other cascade loop tuning methods. The transient response system has obtained values Tp=2,06 seconds, Mp=22,23%, Ess=0,7%, Ts=13,54 seconds
Nawala Mangsa 2.0 – Weather Station with BLE Broadcaster
Get PDFNawala Mangsa is a weather station system owned by the Computer Science Faculty of Narotama University. The system has been installed in several locations and is used to monitor the temperature and relative humidity of the site for research purposes. All information from the remote, currently stored in the server online via an internet connection. In this latest version (ver-2.0), Nawala Mangsa had some updates, including the use of Raspberry Pi 3 boards, adding a sensor to measure sunlight illumination (TSL2561), and replacing temperature and humidity sensor with BME280 so it can also measure air pressure. The using of a board that equipped with Bluetooth version 4.1, which is Bluetooth Low Energy (BLE) ready, make this version of this Nawala Mangsa can also broadcast the data that are read by the sensor through BLE, in addition to sent to the server over the TCP/IP network. By this way, so the weather station data can be directly read by the mobile device that equipped with BLE observer
COLOUR DETECTOR TOOL USING TCS3200 AND ARDUINO UNO FOR BLIND AND CHILD
Get PDFColor detector using TCS3200 that can help the independence of the blind category of low vision in daily life and help improve children’s enthusiasm for learning colors early age. Creation tool TCS3200 color detection is based on the large number of persons with special needs, so this tool can be independent again in everyday life, esppecially on matters relating to the colors. The method used is a model of research and development, starting from planing concept and manufacture of hardware product design to final testing tools as well as the customization tools. The results show that the prototype device is able to conduct perform color detector recognize by voice. For the blind peoples, the prototype of color detection is able perform well by expresse the statement of 80%, whenever the juvenile has state that prototype is able to perform color detection is 70%.Color detector using TCS3200 that can help the independence of the blind category of low vision in daily life and help improve children’s enthusiasm for learning colors early age. Creation tool TCS3200 color detection is based on the large number of persons with special needs, so this tool can be independent again in everyday life, esppecially on matters relating to the colors. The method used is a model of research and development, starting from planing concept and manufacture of hardware product design to final testing tools as well as the customization tools. The results show that the prototype device is able to conduct perform color detector recognize by voice. For the blind peoples, the prototype of color detection is able perform well by expresse the statement of 80%, whenever the juvenile has state that prototype is able to perform color detection is 70%
CONTROL OF AIR COOLING SYSTEM BASED ON FUZZY LOGIC
Get PDFA comfortable activity in of a room is depended on environment. Temperature and humidity is considered that greatly affect the air condition performance. This study aimed to design and built a prototype air cooling controller, namely the fan, so it can control the speed of the fan according to conditions of temperature and humidity. This research uses arduino uno R3 microcontroller and the of DHT 22 sensor to detect temperature and humidity of room and PIR sensor to detect human presence in the room. Sugeno fuzzy logic method is used to take the decision which is processed by microcontroller. That an test is done by manual calculation, matlab simulation and prototype testing. The results shows the averaged accuracy of temperature testing is 3.89%, while range is 1.99% and average humidity accuracy 3.21%, range is 2.49%. the system is able to control the fan of cooling fan autamatically accordances to the desired rules based on fuzzy logic. Therefore, a proposed prototype model is able works performed.comfortable activity in of a room is depended on environment. Temperature and humidity is considered that greatly affect the air condition performance. This study aimed to design and built a prototype air cooling controller, namely the fan, so it can control the speed of the fan according to conditions of temperature and humidity. This research uses arduino uno R3 microcontroller and the of DHT 22 sensor to detect temperature and humidity of room and PIR sensor to detect human presence in the room. Sugeno fuzzy logic method is used to take the decision which is processed by microcontroller. That an test is done by manual calculation, matlab simulation and prototype testing. The results shows the averaged accuracy of temperature testing is 3.89%, while range is 1.99% and average humidity accuracy 3.21%, range is 2.49%. the system is able to control the fan of cooling fan autamatically accordances to the desired rules based on fuzzy logic. Therefore, a proposed prototype model is able works performed
Implementation of Correction to Answer Questions Essay Using Vector Space Model
Get PDFCorrection answers to the essay still use manual way to judge based personal weight determined by each teacher. Correction value calculation result of the answers to the essay can use the quick way by computational methods. Used computational methods based text mining to test the system using the information retriveral vector space model. The result of the test method vector space model obtained by election the second-highest rank of valid answer content to answer valid student and teachers. Answer approach contained in rank-2 closest rank-1 with the result of the closest distance between the has a similarity value for student 0.45 and 0.10 teacher similarity value.Keywords: correction, vector space model, rank, similarit
The Prototype of Orchid Plantation Monitoring and Control System Based on Internet of Things
No full textOrchids are ornamental plant that live in various kind of temperature depending on its type, but mostly in a cool environment. An orchid that planted in a soil media cannot live in the condition that is too wet or too dry. To keep orchid plant in good condition, a monitoring of the plant’s condition is necessary. Internet of Things (IoT) is a technology that can enable communication between one components to others via internet. By using IoT, the control and monitor system of the orchid plantation system is able to be built wirelessly in a long distance. The system built using DHT22 as temperature sensor. YL69 used as humidity sensor and Arduino Mega 2560 used as the main controller. ESP8266 used as the communication board sothat the system can access the Blynk server. 16x2 LCD is used as the display and relay is put to control the connection of water pump and the fan. The result of this research is that the monitoring system is able to watch the data delivered by the sensor via internet. The control system also fully able trigger the water pump and the fa
Fuzzy Logic for Automatically Performance Assessment using CIOWA Model
Get PDFSTEKOM is an institution accommodating almost 500 employees, always evaluates their performance and giving awards to achievement every year’s completed. Fuzzy logic is very suitable to be used in performance appraisal because it can process complex and variatif data, as well as uncertain to be valid data. One of the models in fuzzy logic is the Consistency Induced Ordered Weighted Averaging method system by reducing the operator Averaging Mean and assigning a consistency index value used to analyze fuzzy preference relationships, then using the results of the analysis in the preference aggregation process. This article will explain how to apply the Consistency Induced Ordered Weighted Averaging model in fuzzy logic to assess the performance of STEKOM employees by assigning weight to each attribute and variable, then from the weights and variables will be rated according to the value obtained so that the decision will be taken as a solution in giving awards and promotions to employees that can meet the principles of fairness, equality and approriateness
Investigating the problems of Indonesian Sea Transportation for an Integrated Information System
Get PDFThe problems of Indonesian sea transportation are seriously need to reveal and solve. Eventhough, the government has a significant role managing the organisation at the executive, managerial, and operational level. They are needed performing of regulations, strategic policy, law arrangements, data and information management, company culture, business process supervision, and functional activities on-the-spot. This research used a system improvement objective that is causal effect analyses, system objectives, and constraints. The data are collected through document studies, interviews, meetings, and discussions. The confirmation and verifications of models were conducted using Focus Group Discussion. The results of analysis indicate that three main problems are structural organisation (executive, management, and operational level), regulations, and integrated of information system. Based on Critical Success Factors, the main barriers were regulations, policies, political will, bureaucracy, organisational governance, infrastructure, and an integrated system. Specifically, the model of value chain and an integrated of information system architecture are recommended
Temperature and Humidity Monitoring on IoT Based Shipment Tracking
Get PDFTo maintain quality of goods among shipment process, monitoring and controlling is performed. Moreover, position of the vehicles is performed by GPS tracking. However, conventional monitoring and controlling temperature and humidity is done manually. Moreover, inaccurate measurement during shipment process is affected to the goods quaity especially for goods and beverages packets. Inaccurate tracking has contributed as one factor which causes vehicle lost in control. To addressing these limitation, integrating shipment process such as temperature, humidity, tracking and tracking system are proposed based on Internet of Things (IoT). The systems are conducted by uses Arduino Uno, RFID MFRC522, GPS Neo6M, DHT11 dan RTC DS1307. The system performance has monitored humidity and temperature properly and bus range tracking system is conducted using Neo6M based on IoT. Data measurement result are delivered onto Clouduino over Internet network at any time. Therefore realtime measurement and tracking are visualized onto Web using API Google Maps. The performance result shows that within two experiment treatments, such as static and mobility measurements, the propose system are performed well. In static measurements, the average interval value of the data transmission time is 5,75 seconds from the designed interval value of 5 seconds, the average value of the deviation from the interval of data transmission time is 0,75 seconds, and the average delay time between data transmission and reception is 0,3 seconds. While at dinamic measurements, the average interval value of the data transmission time is 6.22 seconds from the designed interval value of 5 seconds, the average value of the deviation from the interval of data transmission time is 1.22 seconds, and the average delay time between data transmission and reception is 2.31 seconds