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Development of bar code scanner application for Windows Mobile devices using a Symbol Mobility Developer Kit for .NET Compact Framework
Abstract
The problem we would like to discuss and solve is based on a remote controlling of created packages containing predefined components with a predefined numbers of these components. In principle the problem acts as a check out control problem. By the help of mobile device with integrated bar code scanner an application for such mobile device can be developed as a remote client of server, which contains a database with predefined properties, numbers of packages, etc. A web services and mobile client application was created using a Microsoft Visual Studio 2008.
The limitation of the commonly used back-emf sensorless detection technique is that it is not possible to control the speed of the BLDC motor over a wide speed range as required in electric vehicles. In particular, it is not possible to control at low speeds due to the presence of noise signals near pulse width modulated (PWM) back-emf zero-crossing points at low speeds. Therefore, the duty-cycle of direct sensorless back-emf technique is limited to less than 100% since a minimum turn-off time is required to get the sample of back-emf and apply control action. In this paper, a microcontroller-based enhanced PWM back-emf zero-crossing detection method is proposed to control the speed of the BLDC motor over a wide speed range. The experimental results are presented in this paper for validation.
User Adaptive Systems are nowadays widely used in modern information systems for their better reaction on user declared or
nondeclared requests. Paper describes a concept of User Adaptive System (UAS) as a complex UAS framework. Main focus is in
contribution of UAS to user or patient, his life quality and improvements of it. Several interesting examples of UAS are discussed
and described as mobile application for sleep state detection as well as several developed user interface components for use
at mobile devices.
KeywordsUser Adaptive System-Mobile Device-Biotelemetry-UAS Components
Our project deal with the system development of personal sources in area of home care agencies. System consists of the three
main parts - PC application, mobile application and database server. All these parts are built on Microsoft .NET solution
namely on performances .NET Framework 3.5 and MS SQL server 2008, .NET Compact Framework 3.5 and MS SQL server 3.5 Compact
Edition. System works offline, whereas synchronization mobile arrangement with data in database is made only in agency by
the help of technology USB, Bluetooth or WiFi. However the system has also the possibility to work in the online mode, allows
the interviewing on database by the use of the web services. Software layer synchronization administration data is based on
technologies ADO .NET and Linq. System will further develop and will base for advancement biomedical science research framework.
KeywordsBiomedical-HomeCare-.NET-Linq-SQL Server
The concept of social search has been acquiring importance in the WWW as large-scale collaborative computing environments have become feasible.This field focuses on the reader's perspective in order to assign relevance and trustworthiness to web pages.
Although current web searching technologies tend to rely on explicit human recommendations, these techniques are hard to scale as feedback is hard to obtain.
Implicit feedback techniques, on the other hand, can collect data indirectly.
The challenge is in producing implicit web-rankings by reasoning over users' activity during a web-search without recourse to explicit human interventions.
This paper presents a comparison between explicit and implicit users' feedbacks upon web pages.
An experiment, involving 25 volunteers explicitly evaluating the usefulness of 12 thematic web-sites, was performed implicitly gathering their web browsing activity.
The results obtained prove the existence of a strong correlation between explicit judgments and generated implicit feedbacks.
The paper deals with a problem of low data throughput on wirelessly connected mobile devices and a possibility to solve this problem by prebuffering of selected artefacts. The basics are in determining the problem parts of a mobile device and solve the problem by a model of data prebuffering-based system enhancement for locating and tracking users inside the buildings. The framework uses a WiFi network infrastructure to allow the mobile device determine its indoor position. User location is used for data prebuffering and for pushing information from a server to PDAs. All server data are saved as artefacts with its indoor position information. Accessing prebuffered data on a mobile device can significantly improve a response time needed to view large multimedia data. The solution was tested on a facility management information system built on purpose with a testing collection of about hundred large size artefacts.
Localization positioning is one of the basic problems in wide wireless sensor networks. The main objective of positioning process is to define the location of a sensor (node or device) from the relevant information obtained from reference nodes. These nodes already know their location. In many cases, these reference nodes are called beacons. The paper deals with proximity based location technique and their modifications. It does not belong to the most accurate techniques, but on the other hand it is low cost alternative to more expensive techniques. The objective of the paper is to give a survey of various proximity based location techniques performance. We analyze the influence of various design choices on the accuracy of localization techniques. The results of basic proximity based localization techniques are compared with modified proximity technique, which is proposed in this paper. Full Text at Springer, may require registration or fee
An important class of distributed Trust-based solutions is based on the information sharing. A basic requirement of such systems is the ability of participating agents to effectively communicate, receiving and sending messages that can be interpreted correctly. Unfortunately, in open systems it is not possible to postulate a common agreement about the representation of a rating, its semantic meaning and cognitive and computational mechanisms behind a trust-rating formation. Social scientists agree to consider unqualified trust values not transferable, but a more pragmatic approach would conclude that qualified trust judgments are worth being transferred as far as decisions taken considering others opinion are better than the ones taken in isolation. In this paper we investigate the problem of trust transferability in open distributed environments, proposing a translation mechanism able to make information exchanged from one agent to another more accurate and useful. Our strategy implies that the parties involved disclose some elements of their trust models in order to understand how compatible the two systems are. This degree of compatibility is used to weight exchanged trust judgements. If agents are not compatible enough, transmitted values can be discarded. We define a complete simulation environment where agents are modelled with characteristics that may differ. We show how agents differences deteriorate the value of recommendations so that agents obtain better predictions on their own. We then show how different translation mechanisms based on the degree of compatibility improve drastically the quality of recommendations. Full Text at Springer, may require registration or fee
Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were applied to the development of T-DSS, the prototype customised for web based hydro-information systems. T-DSS provides mapping services, database related services and access to remote components, with special emphasis placed on the output flexibility (e.g. multilingualism), where SOAP web services are mainly used for communication. The remote components are represented above all by remote data and mapping services (e.g. meteorological predictions), modelling and analytical systems (currently HEC-HMS, MODFLOW and additional utilities), which support decision making in water management.
In this paper we investigate how temporal factors (i.e. factors computed by considering only the time-distribution of interactions) can be used as an evidence of an entity’s trustworthiness. While reputation and direct experience are the two most widely used sources of trust in applications, we believe that new sources of evidence and new applications should be investigated [1]. Moreover, while these two classical techniques are based on evaluating the outcomes of interactions (direct or indirect), temporal factors are based on quantitative analysis, representing an alternative way of assessing trust. Our presumption is that, even with this limited information, temporal factors could be a plausible evidence of trust that might be aggregated with more traditional sources. After defining our formal model of four main temporal factors - activity, presence, regularity, frequency, we performed an evaluation over the Wikipedia project, considering more than 12000 users and 94000 articles. Our encouraging results show how, based solely on temporal factors, plausible trust decisions can be achieved.
The proliferation of mobile computing devices and local-area wireless networks has fostered a growing interest in location-aware systems and services. Additionally, the ability to let a mobile device determine its location in an indoor environment at a fine-grained level supports the creation of a new range of mobile control system applications. Main area of interest is in model of radio-frequency (RF) based system enhancement for locating and tracking users of our control system inside buildings. The framework described here joins the concepts of location and user tracking in an extended existing control system. The experimental framework prototype uses a WiFi network infrastructure to let a mobile device determine its indoor position as well as to deliver IP connectivity. User location is used to data pre-buffering and pushing information from server to user's PDA. Experiments show that location determination can be realized with a room level granularity.
This paper presents the design of an automated system for signal processing in embedded systems. The design is worked out for an automatic predictive diagnostic system use. This automated system allows communication with embedded systems, an embedded systems control, a data collection from sensors, various signal analyses, and react to limits transcendence. Additionally, the developed system contains a transparent program environment for users control and monitoring. There is a possibility of setting various parameters, so this automated system is very universal and flexible. The paper shortly introduces diagnostic signal analysis methods, an applied embedded system with digital signal processor. Furthermore, there are specified other research targets with predictive diagnostic implementation and other system upgrades.
The approach to development methods which are described in paper allows possibility extension for minimizing costs and widely external hardware industrial control systems utilization. There is described development method of control applications by industrial WinPLC/WinPAC and REX control compiler in comparison to classical development methods that need expensive RT measurement cards and produce only one purpose development solution. The project is based on specification of development process of designed control schemas of prepared applications to an industrial utilization by direct connection and implementation to the chosen control system WinPLC/WinPAC. Paper deals with a way how to produce a solution for control applications that are prepared, designed and implemented in MATLAB-Simulink to the target platform. The multiplatform control system REX is used as a bridge between MATLAB and target platform.
Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are contact measurement
devices which need to be in contact of human body. Secondary they allow only one measurement per several minutes interval
(ones per 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This
device must be a small battery powered embedded system which measure a blood pressure during a long time period and send this
information remotely to operator’s stations. In this station the analysis of receiving video signal is made for several types
of usage. In current state we develop a small device to scan a video images throw the NIR CCD camera (Near Infra Red). The
video signal is transferred by wireless connection to desktop station where it is analyzed. The first results provide an indication
to be a right way to obtain exact continuous blood pressure information.
KeywordsBlood-Pressure-Mobile Device-Analyzer
HomeCare is a special monitoring system of the basic life functions. The system is based on basis of miniature sensors — smart
sensors, information technologies and embedded computer systems. The man uses modified places where the monitoring systems
that watch movement, position and chosen life functions are installed. In this case all the information about person’s basic
life functions and geographical location (GPS) transmitted by GPRS technology. The values of SpO2, plethysmograph curves,
EKG, blood pressure, exact health weight (EHW), respiration frequency, glycaemia and body temperature are measured after medical
consultation. Furthermore the movement (falling, lying, sitting position, walking, jogging) and location is being monitored.
All the measuring devices communicate with embedded microprocessor system wireless by Bluetooth or ZigBee technology. The
ground is embedded microprocessor system that enables data capture from all used sensors does pre-processing and basic evaluation
of states that threaten lives. All data including alarms are transmitted to control centre. Communication by Ethernet or LAN
is secured during the monitoring indoor and in case of using the system outside the GSM and GPRS technology is used. The system
uses OEM modules for measuring bio signals, which guarantee precise measure and compatibility.
This paper presents a novel technique to separate the pattern representation in each hidden layer to facilitate many classification tasks. This technique requires that all patterns in the same class will have near representions and the patterns in different classes will have distant representions. This requirement is applied to any two data patterns to train a selected hidden layer of the MLP or the RNN. The MLP can be trained layer by layer feedforwardly to accomplish resolved representations. The trained MLP can serve as a kind of kernel functions for categorizing multiple classes.
Mobile device makers produce tens of new complex mobile devices per year to put users a special mobile device with a possibility
to do anything, anywhere, anytime. These devices can operate full scale applications with nearly the same comfort as their
desktop equivalents only with several limitations. One of such limitation is insufficient download on wireless connectivity
in case of the large multimedia files. Main area of paper is in a possibilities description of solving this problem as well
as the test of several new mobile devices along with server interface tests and common software descriptions. New devices
have a full scale of wireless connectivity which can be used not only to communication with outer land. Several such possibilities
of use are described. Mobile users will have also an online connection to internet all time powered on. Internet is mainly
the web pages but the web services use is still accelerate up. The paper deal also with a possibility of maximum user amounts
to have a connection at same time to current server type. At last the new kind of database access – Linq technology is compare
to ADO.NET in response time meaning.
The main area of interest of our project is to provide solution which can be used in different areas of health care and which
will be available through PDAs (Personal Digital Assistants), web browsers or desktop clients. The realized system deals with
an ECG sensor connected to mobile equipment, such as PDA/Embedded, based on Microsoft Windows Mobile operating system. The
whole system is based on the architecture of .NET Compact Framework, and Microsoft SQL Server. Visualization possibilities
of web interface and ECG data are also discussed and final suggestion is made to Microsoft Silverlight solution along with
current screenshot representation of implemented solution. The project was successfully tested in real environment in cryogenic
room (-136OC).
The ability to locate a mobile device by a wireless network is well known possibilities. Except traditional WiFi the BT or
GSM network can be used. Utility of position info is in many of current areas. New kind of mobile devices are equipped with
high capacity of hardware like RAM, ROM, SD Cards etc. However the memory bus and CPU are not able to process large amount
of data which leads to slow response in case of mobile software application with large files. To allow an adequate work with
such kind of applications with same comfort as on desktop devices the prebuffering techniques can be used to solve it. Main
area of interest is in a use of locating and tracking users of a mobile information system to prebuffer possible large amount
data to before usage. All large data files are stored as artifacts along with its position information in building or larger
area environment. The accessing of prebuffered data on mobile device can highly improve response time needed to view large
multimedia data. This fact can help with design of new full scale applications for mobile devices.
New kind of mobile lightweight devices can run full scale applications with same comfort as on desktop devices only with several
limitations. One of them is insufficient transfer speed on wireless connectivity. Main area of interest is in a model of a
radio-frequency based system enhancement for locating and tracking users of a mobile information system. The experimental
framework prototype uses a wireless network infrastructure to let a mobile lightweight device determine its indoor or outdoor
position. User location is used for data prebuffering and pushing information from server to user’s PDA. All server data is
saved as artifacts along with its position information in building or larger area environment. The accessing of prebuffered
data on mobile lightweight device can highly improve response time needed to view large multimedia data. This fact can help
with design of new full scale applications for mobile lightweight devices.
The Mobile Ad hoc Networks (MANET) is a wireless network deprived of any fixed central authoritative routing entity. It relies
entirely on collaborating nodes forwarding packets from source to destination. This paper describes the design, implementation
and performance evaluation of CHAMELEON, an adaptive Quality of Service (QoS) routing solution, with improved delay and jitter
performances, enabling multimedia communication for MANETs in extreme emergency situations such as forest fire and terrorist
attacks as defined in the PEACE project. CHAMELEON is designed to adapt its routing behaviour according to the size of a MANET.
The reactive Ad Hoc on-Demand Distance Vector Routing (AODV) and proactive Optimized Link State Routing (OLSR) protocols are
deemed appropriate for CHAMELEON through their performance evaluation in terms of delay and jitter for different MANET sizes
in a building fire emergency scenario. CHAMELEON is then implemented in NS-2 and evaluated similarly. The paper concludes
with a summary of findings so far and intended future work.
Methodology of designing embedded control systems, Programmable Devices and Systems, IFAC Workshop Series
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