Kabsu Han

Implementation of the personal healthcare services on automotive environments

One of the main purposes of personal healthcare devices is for elderly people with chronic illness that needs a health monitoring continuously in common life. There are several standard specifications for personal healthcare devices to interact each other safely and compatibly. Depending on evolution of technology, the elderly and the chronic disease can have their own personal healthcare devices, and they can monitor themselves easily. However, some kind of limitation is still remaining in their life even if they have powerful smart devices. In situation that they need to drive and go to get treatment and to prepare medicine, automotive system does not support interfaces for personal healthcare devices. Therefore, we discuss about several standards of the personal healthcare devices and interfaces for connection of personal healthcare device. Also, automotive environments that include various network interfaces for infotainment and interconnection between infotainment system and devices and platform are considered. After that, we propose several implementations of personal healthcare services to support standard of personal healthcare devices on automotive system.

A Study on Implementation of IVI Applications for Connected Vehicle Using HTML5

Applications and networking are the key functions for connected vehicle. And applications of In-Vehicle Infotainment (IVI) system are one of the important characteristics in the automotive industry. Because of the fast evolution of electronic technologies, automotive industry cannot adopt new technology easily. IVI platform standard was developed by automotive OEM and suppliers but the problems still exist. In this paper, we propose an implementation technique of applications that are based on HTML5 and a simple way to access the mobile network. XML-based configuration is used to represent the capability of the vehicle, IVN signals of the production vehicle is used to validate the interaction between IVI system and vehicle. The application works well with native application APIs and HTML5 APIs as well as interact with vehicle and mobile network.

Advanced verification on WBAN and cloud computing for u-health environment

The Wireless Body Area Network (WBAN) that can collect measured vital signs through sensors enables continuous monitoring of the elder and of chronic diseases. As smart devices become popular, development of the WBAN becomes easier. Our research implemented an integration platform that consists of WBAN and cloud computing based on the Transmission Control Protocol (TCP). We optimized the WBAN and the TCP as a sampling rate control. A sampling rate is the number of transfer data per second. The sampling rate is an important factor in the resolution of waveforms, though high sampling rates can cause a decline in network performance. A smart device performs three threads, such as Bluetooth, main, and TCP. The Bluetooth thread was implemented to collect vital signs from sensing nodes. The main thread performs computations for drawing waveforms and transmits data to the TCP thread. The TCP thread transmits vital signs to a server. We verified our proposed integration platform with formal verification and simulation. We expect to contribute to the platform development of WBAN and to cloud computing.

Cloud computing for u-health and automotive environment

Recently ubiquitous health which can monitor individual health condition always and everywhere is being researched. The elderly and the chronic disease can have their own personal healthcare devices and they can monitor themselves easily. But some kind of limitation is still remaining in their life even if they have powerful smart devices. They need to go to get treatment and to prepare medicine but automotive system does not support interfaces for personal healthcare devices. We consider performance of Bluetooth in order to build efficient network that consist of compliant IEEE 11073 medical devices in automotive environment. Also, to manage efficient automotive, interconnection between IVN and smart device is considered.

Distributed hierarchical service network for automotive embedded system

Automotive embedded systems are connected with In-Vehicle Network (IVN) to provide complex functionality, flexibility and scalability. As many as automotive embedded systems are connected to the IVN, design of IVN is complicated. Also, Performance of IVN cannot be assured. This paper proposes distributed hierarchical service network architecture to solve the problems. Proposed network architecture has two layers, service management layer and service control layer. Service management layer manages services dynamically without a central supervisor and time-controlled scheme. Also, Service management layer can disperse network traffic. This makes design of IVN easier and assures performance of IVN. We show simple system architecture and service management scheme. Network service architecture we proposed can be easily applied to automotive embedded system from simple area to complex area with various IVNs.

A study on test automation of IVN of intelligent vehicle using model-based testing

To certify complex functionality of intelligent vehicle, functional testing is critical parts of development process. For practical testing, well-defined test suites which have wide test coverage and appropriate number of test cases are mandatory. Model-based testing is a kind of black box testing that test suites are derived from model of SUT and automatically executed by model-based testing tool. Also, test cases can be generated automatically with test sequence generation. For test automation of IVN of intelligent vehicle, several transition-based models and test suites which derived from practical test sequence generation strategy are developed. Also, test reports are generated automatically to analyze test results via IVN testing tool. To model the intelligent front lamp system, MATLAB/Simulink stateflow was used. Test sequence generation using TT (transition tour) can assure test coverage and reduce functional testing time. For actual IVN testing, Vector CANoe which supports IVN simulation and testing of actual bus was used. The test cases of CANoe are derived from the result of TT so that the test suite can assure the test coverage also.

Design Exploration Technique for Software Component Mapping of AUTOSAR Development Methodology

Model-based development is useful method in engineering. AUTOSAR is a kind of model-based development method for automotive E/E system which is developed by automotive industry. AUTOSAR provides several models for model-based system development, e.g. software component model, platform model and system model. Basic benefit of AUTOSAR is relocation of the software components regardless of hardware, however limitation for design exploration still exist. This paper describes constraints and requirements of software component mapping and proposes simple algorithm for design space exploration. Two kinds of constraints, software component mapping and data element mapping, are in AUTOSAR but this paper considers software component mapping only for simple algorithm. Fast design space exploration is basis of design decision and acts as input to next phase of development.

An In-Vehicle Data Management Framework for Interaction between IVI and Vehicular Networks

Data processing and networking are the key functions in an IVI system. It is an important competitive of the vehicle not only economy and safety but also application of IVI system in the automotive industry. Some automotive interfaces were developed but not adopted because of limitations and difficulty. IVI platforms are developed by automotive OEM and suppliers but not invigorated till now. In this paper, we propose simple in- vehicle data management framework. The data is transform into XML-based data that the applications in the IVI system can access easily. The data management layer is implemented in Java programming language, IVN of the real production vehicle is used to validate functionality and safety. The in-vehicle data management framework works well with native c application and HTML5 application as well as interact with IVN and mobile network in the test environment.

An Efficient Application Mapping for Coarse-Grained Reconfigurable Architectures

Coarse-grained Reconfigurable Architectures (CGRAs) are very promising to provide high performance at high power efficiency. Hardware simplicity provides such efficiency, and compiler takes the remaining complexity, particulary application mapping. The task of application mapping consists of data and code mapping onto CGRAs. The mapping procedure has responsible for resolving conflicted requirements between exploiting instruction level parallelism and data parallelism to achieve better performance. In this paper, we describe our experience with developing a practical technique for instruction and data mapping based on a generic CGRA. The proposed technique effectively utilizes the exact knowledge of available routing elements, processing elements, and necessary data as well as future resource and data transfer requirements known only at schedule time.