In this paper, design and implementation of an eﬃcient realtime wideband simulator has been discussed. The simulator was run in realtime with a known input and the output data was analyzed. The TDL ﬁlter has been opti- mally implemented over TMS320C6416 DSP. The output of the ﬁlter has been veriﬁed by comparing the simulator output with MATLAB. The pipelined architecture of the processor and the circular buﬀer have been eﬃciently uti- lized. The channel coeﬃcients have been generated and analyzed. The BPSK modulated data has been input and the output has been stored. The bit error rate has been measured and compared with the theoretical data to verify the validity of the channel simulator.
Al-Jadriyah, Baghdad, Iraq
Face recognition is a pattern recognition technique and one of the most important biometrics; it is used in a broad spectrum of applications. The accuracy is not a major problem that specifies the performance of automatic face recognition system alone, the time factor is also considered a major factor in realtime environments. Recent architecture of the computer system can be employed to solve the time problem, this architecture represented by multi-core CPUs and many- core GPUs that provide the possibility to perform various tasks by parallel processing. However, harnessing the current advancements in computer architecture is not without difficulties. Motivated by such challenge, this paper proposes a RealTime Face Recognition System (RTFRS). In doing so, this paper provides the architectural design, detailed design, and four variant implementations of the RTFRS. Finally, this paper determines the speed up obtained for the three advanced implementations (i.e., Hybrid Parallel model, CPU Parallel model, and Hybrid Mono model) against the convention implementation (i.e., CPU Mono model). The practical results demonstrate that the Hybrid Parallel model gain highest speed up around 82X, CPU Parallel model also have a high speed up around 71X, and finally, the Hybrid Mono model gives a slight speed up about 1.04X.
This paper presents a framework to designreal-time event-based applications using Java. The Real-Time Spec- ification for Java (RTSJ) is well designed for hard periodic real-time systems. Though it also proposes classes to model asynchronous events and deal with sporadic or aperiodic tasks, it remains insufficient. The literature proposes the use of periodic servers called task servers to handle non- periodic traffics in real-time systems. Unfortunately, there is no support for task servers in RTSJ. In order to fix this lack, we propose an RTSJ extension model. To validate our design, we adapt and implement two policies: the polling server and the deferrable server policies. To show how effi- cient these policies are, we compare implementation results and results obtained with a discrete-event-based simulator.
Figure 1. Block diagram of healthcare system 2.1. Patient’s node
The central element in a WSN is the wireless sensor nodes. Where the nodes are sensing, processing, commu- nication take place, stores, and executes the communica- tion protocols and the data-processing algorithms. The physical resources available to the node influence the quality, size, and frequency of the sensed data that can be extracted from the network. Therefore, the wireless sen- sor node design and implementation are a critical step ,. The operation of each node depends on subsys- tems which are:
Urinary incontinence is the most common health problem in aged people.
Leaving incontinence events unmanaged will make a negative influence on the aged and the patient both mentally and physically. This paper presents a de- sign and implementation of a realtime wireless monitor system for urinary incontinence, which has been applied in two nursing homes in Beijing and Shanghai. We collect realtime moisture information by using non-contact humidity sensor designed and manufactured by us. When urinary inconti- nence, the sensor will send alert to mobile device via Bluetooth. If got the alert, the mobile device will send the alert to relatives of the aged or disabled people and cloud computing platform, through which we can make this in- formation managed and displayed and the paramedic can be informed about the alarm. This paper gives a brief introduction to the framework of this sys- tem, the design of the non-contact sensor, the transmission of wireless data and the results of tests.
Abstract: The Automatic Detection and Track (ADT) radar is one of the most important types of modern radar.
This radar rapidly scans a limited angular sector to maintain tracks with a moderate data rate, on more than one target within the coverage of the antenna. It is used for air-defense radars, aircraft landing radars and in some airborne intercept radars to hold multiple targets in track. The aim of this research is to study the tracking algorithm used in targets tracking such as tracking filters, tracking gate and data association. Firstly, we will study the basic principles of these algorithms by MATLAB tools, so we can study all advantages and disadvantages of these algorithms, after that we will design a software tools by visual C++ to implementation these algorithms in realtime mode, so that, we can improve this algorithm and represent radar work very close to reality. Firstly, in this research, we will use the basic filters like (α-β), (α-β-γ) and Kalman filter then in the next experiments we can easily use this simulation to add newest filters and algorithms like Extended Kalman Filter (EKF), Particles Filter (PF), maneuver detector algorithm, Multi Model Interaction (MMI) etc.
3.1. Design and Implementation of GPS Receiver
GPS modem a device that in used to receive signals from satellite and which also provide Information about latitude, longitude, time, speed etc . The GPS navigator is more popular In mobiles for they help us to track the road maps. There is an antenna in a GPS modem which Receives the satellite signals and transfers them to the modem. Through modem data is converted Useful information and sends the output in serial RS232 logic level format. The information about Latitude, longitude etc is sent continuously and accompanied by an identifier string. This paper show interfacing between GPS modem and 8051 microcontroller and extract the Location (latitude, longitude, altitude, speed, time etc) from the $GPRMC string and display it on LCD.
In order to implement the proposed algorithm on a hardware platform, we assume that the image of an eye is stored in a Random Access Memory (RAM). In this implementation, we use a RAM with 136 × 82 bytes, called IMAGE_RAM, to store an image. We also used a True dual port RAM, called PV_RAM, with 136 of 15-bit words, to store the projection vector. Three other major units in the design are data smoothing unit, local max/min search unit, and condition check- ing unit. These units are controlled through a control circuit. The schematic of this design is shown in Figure 5.
Factors that influence scheduling decisions include per- formance parameters of the application, the executing status, and the number of times a job has executed. For some scheduler policies, the actual status of job executions is irrelevant. For example, a rate-monotonic scheduler only needs to send a new job into the dispatcher at the be- ginning of every period. On the other hand, many newly designed algorithms make use of the execution history. For example, if we want to implement a scheduler that does not know the job execution time in advance, we may want to adjust its execution budget at run time adaptively. For implementing these types of schedulers, we need to monitor the actual execution time of every job at run time. If a job terminates before it exhausts its preassigned budget, we can reduce its budget so that more jobs can be admitted to the system. Conversely, if a job is always preempted due to insufficient budget, we should assign it more resources so it may complete its execution. To get feedback events from the dispatcher, two mode switches between user mode and kernel mode are needed. To send a new job to the dispatcher, two additional mode switches are required. Therefore, there will be additional overheads of four mode switches. The tradeoff between scheduler flexibility and efficiency is an important consideration for system designers.
Security in general is a major concern in our society today and over time, the security of vehicles has become a priority. Various inventions and technologies have been brought about to put minds at rest, but the complete eradication of theft of cars is much of a tedious task. A solution to knowing the location of vehicles either when they are stolen or for any other reasons. To know this location, it involves the installation of a vehicle tracker in a hidden position in the vehicle so that it is not easily seen while providing essential clues as to the location of the vehicle and also a remote tracking server that receives the location information of the car in longitude and latitude and converts it to a physical address and sends it to the authorized user.
The first module is the tracking device which is attached to the moving automobile. This module composes of a GPS receiver, Microcontroller and GSM Modem The GPS Receiver receives the location information from satellites in the form of latitude and longitude realtime reading. The Microcontroller has three main tasks to read certain engine parameters from automobile data port (OBD-II), to processes the GPS information to extract desired values and to transmit this data to the server using GSM modem by SMS. The chosen engine parameters are Revaluation per minute, engine coolant temperature, vehicle speed. The second module consists of a recipient GSM modem and workstation PC. The modem receive the SMS that includes GPS coordinates and engine parameters. This text is processed using a Visual Basic program to obtain the numeric parameters, which to be saved as a Microsoft Office Excel file The received reading of the GPS is further corrected by Kalman filter technology. To transfer this information to Google Earth, the Excel file is converted to KML, Keyhole Markup Language format. Google Earth interprets KML file and shows automobile‟s location and engine parameters on the map. The system‟s efficiency is depend on the sufficiency of the used communication network.
Key Words: Quadruped, Terrain, Kinematic algorithms, Sensor
In many cases, there is a requirement for mobile platforms that can move in areas with difﬁcult landscape conditions where wheeled vehicles can't travel. Samples of such situations can be found in search and salvage task, and in addition in conveying payloads. Not at all like wheeled robots, walking robot are described by great portability in unpleasant territory. The primary objective of this paper is to show an inventive, modular and reasonable design of a four-legged robot for environmental research purposes The objective is to create a cheap legged platform, which allows research and testing of walking chassis and monitoring environmental conditions. The robot should either be driven from the base station or remote location that should send all available data from sensors, which will be displayed on the computer in the user interface program.
4. Design of Relational Database to Store Student Data
We collect a wide range of student information from surveys to student scores in courses they take. The RSPEF system continually collects and updates data from students when submitting surveys and instructors when uploading student scores through an interface. The relational database stores all information necessary to build models, it is provided with interfaces to extract relevant information from students and allow instructors to upload and save course and student-performance information, a dataset selector interface on top of the relational database will extract relevant datasets that are required to build models. Moreover, a schema is designed that provides a unified representation of student and course data that can be used across courses. The data we collect is naturally relational and requires extensive capabilities to perform complex join operations between related tables. Therefore, there is a need to store them in independent tables which share relationships. The relational database best fits our needs as it is a well-understood approach, maps well to data with multiple relationships between multiple entities and support extensive join and subset capabilities. In this chapter, we will discuss data acquisition, pre-processing, archiving and design of the relational database.
ABSTRACT: In today’s world things has become faster and punctuality a must, especially in institutes likes schools, colleges and offices. The attendance systems have been made with automatic responses and is being used everywhere, this has made the attendance procedure easy to handle and the most accuracy but the main issue in this system is being considerate on legitimate reasons, for example if reporting time is 10 o'clock in the morning and the person reaches 5 or 10 minutes late due to traffic jam or cross roads in the area even then he/she is considered as late. Sometimes the reason behind this maybe that the person is stuck in the parking traffic or is waiting for the lift and so he was not able to log in or punch in time. This especially is a concern in the metropolitan cities of our country where traffic is uncertain yet constant and sadly stagnant in the major areas of the cities. To overcome this problem we are tried to develop a program in which if the person reaches a predefines range from the office area and is just getting late because of the parking traffic or the delay of the lift he can send a signal or message from his phone, and when the attendance system receives this signal it conforms the persons position with the help of GPS and then grant him a grace time so that he is not considered late. But the grace time would be provided for a fixed distance only, when it is confirmed that the person can reach within the specified grace time. This not only saves the attendance but also reduces the problems of being impatient and the chances of over speeding and other accidental damages due to hurry can be avoided. The program will not only be helpful to the employee but will also let the employer keep a track of the data and understand the punctuality of their employee .
Advance car security system is too expensive. Cost for the gadget is too high. Beside that, people also must pay for the service monthly. Tracking systems were first developed for the shipping industry because they wanted to determine where each vehicle was at any given time. Passive systems were developed in the beginning to fulfill these requirements. For the applications which require realtime location information of the vehicle, these systems can’t be employed because they save the location information in the internal storage and location information can only be accessed when vehicle is available. To achieve automatic Vehicle Location system that can transmit the location information in realtime. Active systems are developed. Realtime vehicular tracking system incorporates a hardware device installed in the vehicle (In- Vehicle Unit) and a remote Tracking server. The information is transmitted to Tracking server using GSM/GPRS modem on GSM network by using SMS or using direct TCP/IP connection with Tracking server through GPRS. Tracking server also has GSM/GPRS modem that receives vehicle location information via GSM network and stores this information in database. This information is available to authorized users of the system via website over the internet.