Khalid Hasnan

Pressure Drop Analysis of Square and Hexagonal Cells and its Effects on the Performance of Catalytic Converters

Stringent emission regulations around the world necessitate the use of high-efficiency catalytic converters in vehicle exhaust systems. Therefore, determining the optimum geometry of the honeycomb monolith structure is necessary. This structure requires a high surface area for treating gases while maintaining a low pressure drop in the engine. In the present paper, an adapted sub-grid scale modeling is used to predict the pressure loss of square- and hexagonal-cell-shaped honeycomb monoliths. This sub-grid scale modeling represents the actual variations in the pressure drop between the inlet and outlet for various combinations of wall thickness and cell density. A comparison is made between the experimental and numerical results established in literature. The present approach is found to provide better and more comprehensive results than the single channel technique.

Comparative Study between Wheeled and Tracked Mobility System for Mobile Robot

Robots are widely used nowadays in industries, commercial and domestic purpose for the completion of task in shortest time interval and accurate operation. In the design of a mobile robot, the main mechanical area on focus is the locomotion mechanism. The locomotion mechanism consideration would include the mobile robot flexibility, versatility and efficiency to complete the multi tasks in different environments, indoor and outdoor. This comparative study was focused on the mobile robot mobility systems between wheeled and tracked. This paper highlights the effects on mechanical design, velocity, energy and flexibility of each mobility system. A hybrid system was suggested depending on mechanical design, energy consumption and flexibility.

RFID technology and Zigbee networking in improving supply chain traceability

Radio-Frequency Identification (RFID) as an emerging technology has generated enormous amount of interest in the supply chain arena to reduce product loss or shrinkage. RFID technology has been used to provide a more efficient way to identify and track items at the various stages throughout the supply chain in large retail industry. This paper describes the proof of concept of real time traceability using RFID technology on Lego Robot simulation environment and LabVIEW developed interface that can be similarly implemented in Small and Medium Scale (SMI) industry. Zigbee network have been built to provide wireless communication between database server and RFID readers.

Integration of Value Stream Mapping with RFID, WSN and ZigBee Network

Value stream mapping (VSM) significantly monitored by integrating radio frequency identification (RFID), wireless sensor network (WSN), ZigBee wireless technologies and Labview Graphical user interface (GUI). These technologies are used for identifying, sensing, positioning, multi-hop communication and real time locating system (RTLS). Combined effect of above technologies will optimize labor and operations cost, minimize human error; improve environmental performance and information accuracy. ZigBee protocol IEEE 802.15.4 standard has been used as wireless network in variety of commercial and industrial applications. The range of tracking of RFID reader enhanced with ZigBee coordinator through ZigBee router, which overcomes the range of radio areas that do not reach signals from the RFID reader. The proposed system provides richer information of objects location, identification and their environmental status like temperature and moisture.

Correlation between RFID network planning (RNP) parameters and particle swarm optimization (PSO) solutions

Particle Swarm Optimization (PSO) algorithm is often used for solving RFID Network Planning (RNP) problems. However, the direct correlation between RNP parameters (coordinates and power settings of RFID readers) and PSO solutions is rarely shown. This is due to the fact that most researches done in this field focus more on the development of new variants of PSO and the optimization result. For that reason, this paper tends to investigate the correlation between RNP parameters and PSO solutions. One of RNP objectives (Optimal Tag Coverage) is taken as an example. The formula of optimal tag coverage is elaborated in order to expose the allocation of RNP parameters in the formula. In addition, a representation system for embedding RNP parameters in PSO solution is explained. This paper can also serves as an early guideline for solving RNP problems using PSO algorithm.

A framework of Telemetry technology application in robotic area using MATLAB toolboxes for education

Monitoring robot or system condition while they in operation is very important, since we do not know what is happen with our robot or our system due to far place, human limitation, our mobile activities, and etc. Nowadays we called this a Telemetry Technology. In this paper, we suggest a way to understanding Telemetry technology for education, especially on robotics field with respect to realtime data transfer. Simulink and Virtual reality toolboxes from Matlab are used to model the signal from modified joystick interface in the robot, connected to the laptop and then send the signal data through an UDP protocol using wi-fi and received by the operator laptop for data processing.

Optimization of RFID network planning using Zigbee and WSN

Everyone wants to be ease in their life. Radio frequency identification (RFID) wireless technology is used to make our life easier. RFID technology increases productivity, accuracy and convenience in delivery of service in supply chain. It is used for various applications such as preventing theft of automobiles, tolls collection without stopping, no checkout lines at grocery stores, managing traffic, hospital management, corporate campuses and airports, mobile asset tracking, warehousing, tracking library books, and to track a wealth of assets in supply chain management. Efficiency of RFID can be enhanced by integrating with wireless sensor network (WSN), zigbee mesh network and internet of things (IOT). The proposed system is used for identifying, sensing and real-time locating system (RTLS) of items in an indoor heterogeneous region. The system gives real-time richer information of object’s characteristics, location and their environmental parameters like temperature, noise and humidity etc. RTLS reduce...

Design and Control Architecture of a Small Mobile Robot with Hybrid Locomotion System

This paper presents design and control architecture of a small mobile robot with hybrid locomotion system. It consist the combination of wheel and track type motion system resulting as a hybrid mechanism. The wheel locomotion system helps the robot to move on flat surface or path platform with high velocity, high manoeuvrability at low energy consumption. The track system is designed for rough and unstructured path, where robot need to cross irregular surface with high stability. This system works on interchangeable locomotion phenomena by means of track tensioner unit (TTU). The TTU helps the loading and unloading of track system by means of rack and pinion mechanism. This design of small hybrid mobile robot is improves robot applications and also enhance its flexibilty, verstality to work in multi type of terrains.

Design and Failure Analysis of Track Tensioner Unit for Mobile Robot Using Solidworks

The designer should be familiar with the acceptable dimensions and material for model, which fulfils its performance requirements under stress and deformation. In this paper the design and failure analysis of track tensioner unit (TTU) of hybrid locomotion mobile robot is presented. The TTU is a module that helps the locomotion system transformability while robot moves on wheel or track mechanism. It is made of Aluminium alloy Al6061-T6 and was analyzed for its mechanical behaviour that subjected under different load conditions. The failure analysis gave the results about the material behaviour under loading condition that helps the selection of suitable one for design. The simulation result shows that the model material fails or deform permanently under 1000N load.

Impact of RFID and Xbee Communication Network on Supply Chain Management

Every industry, organization or individual needs to be minimize their expenditure, time and fatigue and maximize their profit in supply chain. These goals can be achieved through automation by using Radio Frequency Identification (RFID) and Zigbee wireless communication technologies, which is easily available in the market. Basically RFID technology is used for automatically tracking, locating or identifying the entities. It can easily integrate with low cost low power consumption Xbee (Zigbee) device, which is used to increase the communication range by large number of node deployment. RFID-Xbee network integrates with Laboratory Virtual Instrument Engineering Workbench (LabVIEW) Graphical User Interface (GUI), which gives real time information of supply chain at single control panel. The integrated communication model proves the near field inductive coupling and can be used in supermarket for item pricing, office automation, security system, and car parking. This system confirms the concept of real-time locating system (RTLS) in an indoor environment. The impact of RFID and Xbee network communication model enhance the read range of RFID reader, so that out of range items can be tracked easily without additional RFID readers. The benefit of this system is to maximize profit, reduce human intervention and minimize waste.