Sritrusta Sukaridhoto

Classification extension based on IoT-big data analytic for smart environment monitoring and analytic in real-time system

Monitoring water conditions in real-time is a critical mission to preserve the water ecosystem in maritime and archipelagic countries, such as Indonesia that is relying on the wealth of water resources. To integrate the water monitoring system into the big data technology for real-time analysis, we have engaged in the ongoing project named smart environment monitoring and analytic in real-time system (SEMAR), which provides the IoT-big data platform for water monitoring. However, SEMAR does not have an analytical system yet. This paper proposes the analytical system for water quality classification using Pollution Index method, which is an extension of SEMAR. Besides, the communication protocol is updated from REST to MQTT. Furthermore, the real-time user interface is implemented for visualisation. The evaluations confirmed that the data analytic function adopting the linear SVM and decision tree algorithms achieves more than 90% for the estimation accuracy with 0.019075 for the MSE.

A comparative study of open source softwares for virtualization with streaming server applications

Currently, several streaming servers are available to provide a variety of multimedia applications such as VoD (Video-on-Demand), IP-phone, and IP-TV. As a result, the provision of multiple streaming servers on a single machine using the virtualization technology has become important in order to save the operational/management costs while enhancing the performance and the reliability of the system. In this paper, we show the performance evaluation of two representative open source softwares for the virtualization technology, Xen and OpenVZ, in various configurations of applications on three open source streaming servers, Red5, Darwin, and VLC. Our experimental results indicate that OpenVZ provides the better performance for streaming applications with Darwin and VLC whereas Red5 can run only on Xen.

Design and implementation of smart environment monitoring and analytics in real-time system framework based on internet of underwater things and big data

The Internet of Things Technology (IoT) is developing so rapidly. One of IoT implementation is an Internet of Underwater Things (IoUT) which is used for u.nderwater monitoring. This paper discuss an integrated smart environment system framework based on IoUT and big data that consist of open platform that processes data from Remotely Operated Vehicle (ROV) and portable sensor with water parameters sensors such an input device to collect and save the data of oxidation-reduction potential, pH, electrical conductivity, total dissolve solid, salinity, dissolved oxygen, and temperature in monitored rivers temporary. Coral Reef Monitoring used for preventing coral bleaching by using underwater camera to take some pictures that will be sent to data center and then analyze it, Wireless Mess Network Access Point used as the way ROVs ‘talking’ to each other while doing a monitoring process in a wide river. Then all of the collected data from ROVs and portable sensor will be saved and analyzed to the data center platform based on Hadoop Multi-Node Cluster. The data will be visualized as a chart or a table and can be accessed world-wide We found that, the processing of the data used in the open platform to be relatively straightforward using a combination of SQL. However, the use of HDFS (Hadoop Distributed File System) as data center and more versatile frameworks such as Mapreduce, Hive, Spark, Redis and more flexible set component of features that particularly facilitate working with larger volumes and more heterogeneous data sources.

A design of radio-controlled submarine modification for river water quality monitoring

In Indonesia, river water plays important roles in human life; for example, for transportation and economic activities of the inhabitants. However, industrial, agricultural and domestic water is discarded into rivers directly in many developing countries, since drainage systems have not been completely constructed. Water quality monitoring using radio-controlled submarine provide an opportunity to develop baseline monitoring system for river water ecosystem health indicator. We propose a design modification of radio-controlled submarine for river water quality monitoring. Our design consists of modification for navigation system by added external motor, IMU and GPS; modification of processing and control system by added micro controllers and mini pc, and modification of water sensors system.

FLoW: Achieve native multi threading support for embedded system through microkernel

Multithreading implementation through real time operating system was held in several years to optimize resource management in embedded system. Several side effects, such as large binary size and memory usage were appeared while implementing multithreading mechanism and its supporting mechanism. We developed FLoW to reduce those side effects while performing multithread in embedded system. FLoW implemented event based microkernel to minimize the environment and simplified the services. Static array implementation with reduced priority number was chosen rather than dynamic allocated to reduce platform memory usage in maintained scheduling performance in FLoW. The results show average performance of native multithreading supported by microkernel relative to existing real time operating system with lower side effects.

FLoW head: 7 DOF mechanism for FLoW humanoid

Humanoid robot has become popular research platforms in robotics and artificial intelligence. Humanoid robot can perform complex motions, including the balancing, walking, and kicking skills required in the RoboCup robot soccer competition. The humanoid robot from the Electronic Engineering Polytechnic Institute of Surabaya (EEPIS) research center named FLoW. This paper discusses about the FLoW head mechanism. Flow head mechanism is split into three parts there are eye mechanism, head mechanism and neck mechanism. The forward kinematic from FLoW head mechanism is obtained to generate workspace of motion. The FloW head workspace of motion is compared to human workspace of motion. From the experiment the motion of FLoW head already approached human easy head motion.

A Proposal of CSMA Fixed Backoff-time Switching Protocol and Its Implementation on QualNet Simulator for Wireless Mesh Networks

As an inexpensive and scalable Internet access network, we have studied the architecture, protocols, and design optimizations of the Wireless Internet access Mesh Network (WIMNET). WIMNET is composed of multiple access points (APs) that are connected through wireless links. Previously, we have proposed the concept of the CSMA-based Fixed Back off-time Switching (CSMA-FBS) method for WIMNET to improve the performance by giving necessary link activation chances for multi-hop communications. In this paper, we propose a protocol for this CSMA-FBS method implement able on APs, and its actual implementation on the QualNet simulator for evaluations in realistic network environments. The simulation results in two network topologies confirm the effectiveness of our proposal.

Preliminary design of interactive visual mobile programming on educational robot ADROIT V1

The development of robotics have a great potential to be integrated with educational system. Robotics become more common in elementary and high school students. However, the absence of a module which integrates hardware and software makes harder for them to learn robotic. To help students learning robotics by using an easy to build robot with a dedicated interactive Graphical User Interface (GUI) to program it, we propose a module that integrates the simplicity of modular robot with feasible and appealing mobile visual IDE programming apps. A modular robot which allows student to build the robot without have to build it from the scratch, and Mobile visual IDE is an android based apps which allow user to program robot in GUI with a drag and drop icons followed by property editor. The icons represent robot commands such as moving and interacting with objects. This module also support advanced robotics features such as line follower, wall follower and free movement. The evaluation results demonstrate the visual appearance, ease of operation, the level of enjoyment, and benefit considered quite good by the respondents.

FloW vision: Depth image enhancement by combining stereo RGB-depth sensor

Human can recognize an object just by looking at the environment, this capability is very useful for designing the reference of humanoid robot with the ability of adapting it on its environment. By knowing the field conditions that exist in such environments, robot can understand the obstacles or anything that can be passed. To do that, robot vision needs to have a knowledge to understanding an obstacles that exist around it. We investigate possible improvements that can be achieved in depth estimation by merging coded apertures and stereo cameras. The demonstrated results of this analysis are encouraging in the sense that coded apertures can provide valuable complementary information to stereo vision based depth estimation in some cases. We show that with this system, it is possible to extract depth information robustly, by utilizing the inherent relation between the disparity and defocus cues, even for scene regions which are problematic for stereo matching.

A fixed backoff-time switching method for wireless mesh networks: Design and Linux implementation

As a flexible and cost-efficient scalable Internet access network, we have studied architectures, protocols, and design optimizations of the Wireless Internet-access Mesh NETwork (WIMNET). WIMNET is composed of wirelessly connected access points (APs), where any host can basically access to the Internet through multihop communications between APs with IEEE 802.11 standard. In WIMNET, undesirable situations can often happen such that some links dominate the bandwidth while others become insufficient due to the limited shared bandwidth. However, the contention resolution mechanism using a random backoff-time in the CSMA/CA protocol of 802.11 standards is not sufficient for handling real-time traffic in multihop wireless communications. Previously, we have proposed the concept of the CSMA-based Fixed Backoff time Switching (CSMA-FBS) method for WIMNET to improve the performance by giving necessary link activation chances for multi-hop communications. We implemented our proposal on the QualNet simulator, and verify its effectiveness through simulations. In this paper, we present an implementation of the FBS method in Linux kernel to show its practicality and investigate the performance in a real network. Our design consists of implementations or modifications of the five programs: Kernel configuration, Debugfs, Minstrel, iw, and FBSdaemon.