Vehicle Electronics. Services and Solutions to Manage the Complexity

Transcription

1 Vehicle Electronics Services and Solutions to Manage the Complexity

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3 INNOVATIONS & DEVELOPMENT CYCLES Commercial vehicle manufacturers are experiencing a technological change. In addition to the rising proportion of electrical and electronic components, the distribution of functions between these components in the vehicles has moved closer to the focus of the development. Domain-specific architectures and function-oriented software design are at the beginning and are indispensable before the implementation. Electronic systems play a decisive role, both prior to the development of the vehicle and later during its ongoing development. Nowadays, they are the yardstick against which the degree of innovation is measured. New electronic systems and functionalities offer manufacturers the possibility to differentiate themselves from the competition in the public perception. The proportion of electronics in the overall equipment of a commercial vehicle has now risen to as much as 50% and the trend is upwards. Factors such as innovations, shortening product lifecycles and development times as well as increasing competition and further pressure on costs are the main driving forces behind the progress in the commercial vehicle industry. We perceive our task as advising you in integrating these innovations and to support you in any conceivable way. With our domain- and market-specific know-how and as the transfer agent of the ESG Group responsible for the commercial vehicles area, we take proven technologies, methods and solutions used in the automotive industry and adapt them to the requirements of the particular market. We cover all specification and integration levels of the development process in accordance with the V-Model (lifecycle process model). The effects of the individual development steps on production and after-sales are checked and optimised by taking a holistic view of the subject matter. Innovation & development cycles Function-oriented design Safety-critical software Increasing proportion of electronic control units Increasing software complexity Range of variants and versions Increasing effort of integration and testing Consistent tool sequences and integrated data management Process change and optimisation Domain-specific vehicle architecture Standard architectures of the electronic control units (e.g. AUTOSAR) Product Development Process Production and Service Specification process Development process Validation process Lifecycle management SoP System definition System test SOP = Start of Production Component specification Component test Functional specification Functional test Implementation

4 KNOW-HOW & EXPERIENCE A domain- and market-specific know-how distinguishes ServiceXpert. Furthermore, the transfer and adaptation of proven technologies, methods and solutions of the automotive industry into the commercial vehicle segment is another core competence of ServiceXpert. Customer-specific analysis and consulting projects represent the first steps towards introducing a solution. Process consulting Smooth-running, cohesive processes are essential for a rapid time-to-market and a high quality product. The increasing level of networking and the interdependencies between individual development partners are the cause for more and more media and information discontinuities in this area. Analysing and optimising processes sustainably is a major competitive advantage. ServiceXperts consultancy approach is always comprehensive and focused on specific customer s processes. Based on a profound analysis of the desired objectives as well as of all employees and departments involved, we develop specialized concepts which include the description of modern, result-focused technical process flows. For optimising business processes we take profitability, increase in efficiency and best practices into account. For the maturity test of the processes we rely on the CMMI/SPICE know-how. Areas of expertise in process consulting Requirements engineering Change management Elimination of defects Diagnostics lifecycle Flash data management Configuration management Compatibility management Testing and integration Development of safety critical software EURO VI and Tier 3b / 4if Defect elimination process Change management» Risk assessment» Project timetable» Quality analysis (incl. FMEA) Test validation» Brand tests» Initial sample inspection Warranty Definition and design Development Production Service

5 KNOW-HOW & EXPERIENCE Technology and methodology consulting Selecting the optimum technologies and methods and using them correctly are both the basis for and the driving force behind corporate innovation. Adapting proven automotive technologies is a rapid and efficient way to guarantee in-house innovative potential. The manufacturers in the automotive area have to face the implementation of the legal requirements earlier than the commercial vehicle area. The introduction of a new method as well as a marketspecific adaptation of a solution demands a consistent and standardised approach. Our range of services includes the knowledge and selection of methods for tackling certain problems as well as how to introduce and adapt these methods to customers processes. Through our active participation in the technology and innovation network of the ESG Group, we gain access to state-of-the-art technologies, methods and standards in the areas of automotive, aerospace and logistics. In addition, our customers profit from our experience across the board with various commercial vehicle industry segments (on-road and non-road) and customers. System definition Component specification Areas of expertise in technological and methodological consulting Diagnostic technologies Communication standards Vehicle electrical system architectures Data modelling Functional specification Implementation Strategies for testing and integrating Functional test System test Component test

6 EMBEDDED SYSTEM AND SOFTWARE DEVELOPMENT Software is making an increasing contribution to commercial vehicles and is set to become more and more of a strategic product component in the vehicle manufacturer s arsenal. Software is used for implementing classic vehicle functions as well as innovations resulting from networking. Furthermore, the power train is the heart of any commercial vehicle. Designing the electronic and software system for a vehicle is a very difficult task, since the requirements in the various lifecycle processes are extremely extensive and multifaceted. In the area of embedded systems in particular, it is necessary to take account of the complicated interactions between control unit software, sensor/actuator systems and mechatronic components. In order to solve a complex design problem, a development process is needed, which takes account of all development phases from dealing with requirements and boundary conditions through to approval of the system. System definition System test Systems engineering Systems engineering involves integrating all technical parameters as well as ensuring that all physical, functional and technical interfaces are compatible. The objective is to design a system that fulfils the specified requirements. Services for systems engineering System design and optimisation of specifications Architectural Design Bus communication and network management Rapid prototyping and modelling Component specification Component test Functional specification Functional test Implementation

7 EMBEDDED SYSTEM AND SOFTWARE DEVELOPMENT Processes/methods Requirements definition Tools Requirements Management Tool Analysis Draft functional design Architectural design UML Tool HW SW (hybr.) SW (diskret) Verfication / Validation HW HW HW Partitioning SW (hybr.) Detailed design SW (hybr.) Code generation SW (hybr.) SW (discrete) SW (diskret) SW (diskret) Bus communication and communication generation MATLAB/ Simulink Tool for code generation SD Software development Software development focuses on representing the functional architecture in a specific software system. It includes all the programs and data that are processed in the distributed, process-controlled system of the vehicle. ServiceXpert gained in numerous projects a multitude of experiences in the domains development and diagnosis, sharpening the expertise of the company s embedded engineering. Services for software development Functional architectures Modelling and simulation Code generation, coding, diagnostics

8 INTEGRATION & TESTING COMPLEX EMBEDDED ELECTRONICS (EE) SYSTEMS Important preconditions for a smooth integration of electronic systems and successful testing are active exchanging of information and close cooperating between the development and test departments of both the manufacturer and the suppliers. System integration represents a key pillar in the development process according to the V-Model. This is where the alignment between the required and the implemented functionalities takes place. Integration concepts and detailed timetables have to be prepared for integration on the various system levels (component, subsystem, overall system). The crucial basis for a successful verification of functions is elaborated test strategies that can assure working vehicle functionality including the variants. Before the actual testing can start, the scope of the system and the tests must be agreed together with the technical departments. If needed, ServiceXpert can furnish the necessary test equipment and test software to validate the electrical system properties according to the system validation process. There are various different ways of implementing integration and test platforms: in the laboratory at lab trucks and prototype cars as well as on the real vehicle. If any components or subsystems are not available, they must be simulated using suitable tools. Experienced test engineers from ServiceXpert and the ESG Group are at your disposal for these tasks. System definition System test Component specification Component test Functional specification Functional test Implementation Services for system integration Integration concepts Integration planning Services for the test at the system levels Test strategy Test case determination Performing the tests & documentation Infrastructure services Analysis of needs Tool selection, introducing and adapting tools Verification Levels Level» (Vehicle) Level» Vehicle subsystem (e.g. power train) Level» Control unit Level» Microcontroller Verification on all levels Level» Software

9 ENGINEERING DATA MANAGEMENT The actuality and compatibility of all vehicle data throughout the entire vehicle lifecycle is a very important prerequisite for internal and external processes to take place efficiently. This is based on methods and systems for engineering data management. The main demand on requirements engineering is to have a system and process description that is structured, function-oriented and consolidated and which can be used to generate tender specifications. Requirements management creates and continues the documents and processes started in the development phase throughout the entire product lifecycle. New and modified technical requirements will be integrated into the overall system of the vehicle. Furthermore, aspects realised and implemented during the development process must be checked and continuously readapted in terms of compatibility and configuration management. Networked systems and distributed functions of a vehicle electrical system have to have an excellent compatibility management which guarantees the system integrity in the long term. One main task of the configuration management is to identify and provide a dedicated system configuration at a certain moment in time in order to permit control and traceability throughout the entire software lifecycle. ServiceXpert s service portfolio includes the concept and implementation of IT systems for engineering data management based on content management systems (CMS). Services for requirements engineering Introduction of methods and tools Use of tools Services for requirements management System support Verification Documentation Services for compatibility management Various alternatives Data management Services for configuration management Change management Feedback analysis Release planning Solutions relating to engineering data management systems Concept Implementation Operation Workflow Layer Project / process / workflow management Domain Layer* Domain 1 Domain 2 Domain 3 Domain... Domain x Object Linking Layer Database Layer Relational database * Domains can be test data / function data / service data management etc.

10 INTEGRATED DIAGNOSTICS Reliable and efficient repair of malfunctions and component defects is one of the major challenges of commercial vehicle manufacturers while the complexity of the vehicle is increasing especially in respect of a high grade of networked functions and systems. The diagnostic functions required for repair, maintenance and end-of-line programming must be suitably distributed throughout the vehicle and test and diagnostics equipments. This requires a clear diagnostic strategy and implementation concept for the individual lifecycle processes. The increasing standardisation of the ECU architecture (AUTOSAR) and the MCD profile in the ASAM model provide significant support for this implementation concept. Onboard diagnostics In case of a malfunction the ECU fault detection function triggers an error handling routine that causes an entry in the fault memory of the ECU. Using a diagnostic tester this entry can be read out subsequently. Withal the real challenge is the interpretation of the fault memory entries and definitively tracking down the malfunction in case the vehicle function is distributed via several ECUs. Services for onboard diagnostics Use of diagnostics methods Set up of diagnostics infrastructure Development and test of diagnostics functions Diagnostics of distributed functions Vehicle Control unit (ECU) Services relating to diagnostic strategy Distribution of onboard and offboard quota Management of lifecycle processes Diagnostics plant standard Offboard diagnostics During production and in the after-sales service the vehicle electrical system is connected to a diagnostic tester. Via the diagnostics connecting interface (plug) all ECUs with implemented diagnostic function can be connected and the fault memory can be read out. The received information is used to identify errors as well as to select and set parameters for test sequences used in functions and components. ServiceXpert operates since 2007 its own diagnostics centre in Hamburg, where the experience and know-how from numerous projects in onboard and offboard diagnostics of several market segments is collected and concentrated and offered to its costumers. Services for offboard diagnostics System concepts Communication with the diagnostics tester Modelling of diagnostics information Managing of diagnostics data Implementing flash and diagnostics solutions Workshop or production Tester or test system Application Layer Vehicle functions Diagnostic functions Diagnostic services Fault memory Vehicle on-board communication Vehicle bus» Transport Layer» Data Link Layer» Physical Layer Diagnostic socket Diagnostic Coding Middleware Offboard applications Flashing Measuring VCI communication VCI module Tester communication Diagnostic communication Controlling Diagnostic-DB (ODX)

11 SERVICEXPERT ServiceXpert Gesellschaft für Service-Informationssysteme mbh is the system and software house for leading manufacturers of commercial vehicles as well as the supplier industry in Germany and Europe. For many years, ServiceXpert has been an established engineering partner for vehicle electric/electronic development. Thereby ServiceXpert focuses on function and software development as well as test and integration to the entire vehicle. With specific know-how ServiceXpert engineers develop innovative solutions. At the in-house Diagnostics Centre DiC the ServiceXpert engineers compile comprehensive diagnostics solutions from development to after-sales service. In form of the DiaMon diagnostics system, ServiceXpert provides a flexible and proven system for lifecycle diagnostics of commercial vehicles. Furthermore ServiceXpert assists its customers in planning, implementation and operation of systems used for information management throughout the product lifecycle. For the support at after-sales service the company developed modular IT solutions. As a company of the ESG Group and a part of the ESG Automotive Division ServiceXpert engineers collaborate closely with the ESG s technology and innovation network. ESG develops, integrates and operates electronic and IT systems for the armed forces, government agencies and companies of the automotive and aerospace industry and logistics. Further sites: Detroit (USA) Shanghai (China) = Sites ESG Group ServiceXpert Gesellschaft für ServiceInformationssysteme mbh Branch Office South For further information Wandsbeker Allee Hamburg, Germany Frankfurter Ring Munich, Germany office@servicexpert.de Tel Fax Tel Fax Homepage

12 A company of the ESG Group