Roland Rathmann
Support in Ongoing Project
Experience
Support in Ongoing Project
Automotive Supplier
- closing the safety case
- creation of meaningful traceability matrices and targeted test expansion
- transferring requirements into other database systems
- structuring the requirements, assessing their completeness, and setting up new test cases based on use-case–based test strategies and the results of internal traceability matrices
- partial automation of tasks within a requirement assessment tool
- tools and languages: MS Teams, reqIF, Enterprise Architect, Codebeamer, proprietary tools for creating and evaluating traceability matrices (approx. 1000 x 1000)
Process Upgrades for Functional Safety
Maximator-Hydrogen
- process upgrades for functional safety and self-approval of filling stations
- correcting formulas for failure rates and developing a process change concept
- support in expanding safety processes and coordinating safety standards (e.g., DIN EN 61508, DIN EN 61511, VDI 2180)
- developing suitable formulas for (in-)homogeneous redundant MooN architectures for SIL-based PFD calculation
- SIL reduction and tool qualification
- coordination and cooperation with RAMS management
- tools and languages: MS Teams, Visio, MindManager, Functional Safety Suite, proprietary tools
Concept for an autonomous driving platform, SAE Level 4
TTTech-Auto (on behalf of Sthree / Computer Future)
- optimization and evaluation of diversity in the redundant architecture
- performing FMEA, DFA, and providing concept support
- various analyses, including Markov chain analyses and goal structure notations
- considering cybersecurity
- tools and languages: MS Teams, Confluence, Enterprise Architect, PRISM, GitHub, use of proprietary tools
Requirement Assessment
Bosch
- creating a safety manual for a computing platform (SEooC)
- achieved success with an improved version of the safety manual
- conducting a requirements analysis and review of the safety manuals
- risk assessments during implementation
- evaluating a DFA and creating a DFA template
- revising the safety manual together with the functional safety team
- tools and languages: MS Teams, DOORS ("Jazz"), GitHub, use of proprietary tools
Functional Safety Engineering
FEV / EVA vehicle technology
- homologation and renewed safety approval of a technically modified Li-ion energy storage (after-sales safety for BMW)
- performing impact analysis and creating all resulting work products
- creating the verification and validation plan, safety case update and safety argumentation
- identifying differences and similarities between homologation tests (UN ECE R100), transport standard UN 38.3 and GB 38031:2020 (Chinese standard)
- setting up appropriate test plans
- completing the analyses and safety planning for closing the safety case
- tools and languages: MS Teams, DOORS, Confluence, Tortoise, GitHub, cell simulation (fault injection simulation), fault tree analysis, event tree analysis (ETA)
Functional Safety Support for Driver Assistance Systems
TTTech
- Middleware platform for autonomous driving, operating system and safety services as SEooC development
- Support and consulting for agile feature development regarding functional safety, safety case and safety argumentation
- Conducting software integration design FMEA and process FMEA according to VDA guidelines, including security aspects
- Participating in reviews and conducting confirmation reviews for D-FMEA and P-FMEA
- Supporting safety management and deriving corresponding requirements from the FMEAs
- Tools and languages: MS Teams, Windchill PTS, Confluence, Collaborator
Functional Safety Engineering
Center for Autonomous Driving (BMW)
- Support and consulting for agile development work of feature teams regarding functional safety
- Developing work processes for software safety analyses, such as DFA (Dependent Failure Analysis)
- Support for SOTIF topics and automation of steps for more efficient SW FMEA execution
- Semi-automation of analyses by extracting information from the build process and Magic Draw content
- Developing a prototype for a SOTIF scenario generator
- Python scripting for SW analysis and management of DFA results
- Identification of residual risks in adaptive AUTOSAR
- Tools and languages: Python + JSON, Magic Draw, Bazel, model design for an error propagation simulator (proprietary), tool for generating and evaluating SOTIF scenarios (proprietary)
Functional Safety Management
Autoliv/Veoneer
- Standards-compliant coordination of work products for functional safety according to ISO 26262
- Hazard analysis with risk assessment for an emergency braking system and ACC with follow mode, ASIL B(D)
- Definition of a safety concept (Safety-out-of-Context)
- Preparation of safety plans, a functional safety concept, and a technical safety concept
- Conducting FMEA as well as coordination and alignment for distributed development (Sweden, Germany)
- Consulting and collaboration in establishing an ASIL B compliant development process for model-based SW development
- Item definition for highway pilot and autonomous parking in public parking lots
- Development of safety goals and requirements for autonomous driving according to SAE Level 3
- Tools and languages: Telelogic DOORS, self-developed tool for editing GSN diagrams (Goal Structure Notation), Traceability Browser, Enterprise Architect, JIRA
Functional Safety Management for fail-safe power supply of an autonomous vehicle
South German automotive supplier
- Standards-compliant coordination of work products for functional safety according to ISO 26262
- Definition of the safety plan and a development interface agreement (DIA) with the OEM
- Incorporation of safety activities into the project plan
- Identifying the additional scope of ISO 26262 requirements compared to project work under ASPICE
- Creation of safety plans and project plans
- Identifying gaps and working out the deltas between ASPICE and ISO 26262
- Tools and languages: Polarion, mind maps, Microsoft Project (MSP), mind map interfacing with MSP
Functional Safety Management for steering power assist systems
Thyssen Krupp
- Standards-compliant coordination of work products for functional safety according to ISO 26262
- Hazard analysis with risk assessment for steering assistance (ASIL D), automatic parking function (ASIL D) and calculation of the absolute steering angle (ASIL B)
- Creation of safety plans and a functional safety concept
- Identification of gaps at functional and system levels
- Improvement of audit results
- Tools and languages: Telelogic DOORS, self-developed tool for editing GSN diagrams (Goal Structure Notation), IBM Change, Enterprise Architect
Functional Safety Support
Porsche Engineering and Porsche AG
- Standards-compliant development of a functional safety concept (ISO 26262) for the power network (high voltage, 12 V and 48 V) and a 7.2 kW on-board charger (OBC)
- Hazard analysis with risk assessment and process-oriented work
- Creation of safety plans and a functional safety concept for plug-in charging
- Definition of safety goals and execution of hazard and risk analysis (H&R)
- Preparation and participation in FMEA and FTA
- Achieving safety approval for the developed OBC component
- Tools and languages: Telelogic DOORS, Dimensions, APIS Software, custom tool for editing GSN diagrams (Goal Structuring Notation)
Electrical and functional safety of a high-voltage heater
Webasto
- Standards-compliant hazard and risk analysis (ISO 26262) and electrical safety
- Development of a concept for electrical safety and insulation coordination according to ISO 6469-3 and 60664-X
- Development of a comprehensive safety concept in collaboration with TÜV SÜD
- Deriving requirements from safety goals and supporting software development under ASIL B
- Creation of a tool to process HARA deltas due to functional changes
- Software development for the prototype with Infineon µC TLE9832
- Tools and languages: Excel with macros, Keil µVision, Serena PVCS, PRQA static quality analysis (MISRA), National Rhapsody, DOORS, MindManager, Vector CANape for XCP debugging
Electrical and functional safety of HV systems
TÜV SÜD automotive
- Assessment of concepts and chargers for standards compliance and electrical safety
- Evaluation of projects in the field of hybrid drives and on-board chargers with respect to ISO 60664, EN 6469, IEC 61851, IEC 61508 and ISO 26262
- Calculation of high-voltage insulation coordination
- Support in creating test plans (DVPs) for a TÜV SÜD quality mark
- Tools and languages: FMEA support programs, Office tools, MindManager
Development of a BMS for lithium-ion batteries
Litec Battery GmbH
- Development of a BMS system (HW+SW) for industrial storage as well as EV and PHEV vehicles
- Setup of a complete battery simulator including aging model, thermal model and power prediction
- Optimization of active cell balancing
- Conducting a lecture series on BMS theory and balancing strategies
- Expansion of the simulator into a HiL BMS test system with a virtual battery
- Integration of MATLAB models into the simulator interface under LabVIEW 9.0
- Creation of concepts for cell safety stabilization and cell balancing
- Generated two patent proposals
- Tools and languages: Infineon 164 XE, XC2267, XC888, LabVIEW V8.6/9.0, MATLAB, MS Office, OPEN Project
Function development for supercap storage and Li-ion battery
SVDO
- Prototyping (A-samples) of supercap storage and Li-ion high-voltage batteries
- Function development and derivation of formulas for microcontroller programming
- Model-based development of a highly efficient balancing methodology for supercap storage
- Development of calculation models for self-discharge and battery aging
- Construction of simulators for supercap and lithium-ion storage with power prediction and driving cycle application (e.g., NEDC)
- Tools and languages: LabVIEW V8.2, Microsoft Office tools
Requirement Tests for Airbag Control Unit
Conti/Temic
- C programming for an airbag control unit and implementation of customer requirements
- Creating requirement test specifications for the airbag safety concept with redundant controller monitoring
- Running the tests and creating test reports
- Participating in code reviews and working according to the V-model
- Tools and languages: IAR Embedded Workbench, C, MISRA guidelines, EasyCase, PVCS, TestTrackPro, Motorola Star-12 processor, i-system emulator ic4000, serial UART communication
Firmware for the Quasar confocal microscope
Leica Microsystems
- Developing firmware for internal control of lasers, mirrors, shutters, and apertures
- Creating a functional interface for CAN bus-based stepper motor control functions
- Expanding verification tests on a C# test bench under Windows XP
- Troubleshooting image transmission from FPGA to PC over USB 2.0
- Tools and languages: MS Visual Studio C#, .NET Framework v1.1, Keil uVision 3, Cypress EZ-USB FX2, Microchip 18FXXX CAN controller, MCP2515, I2C, Dallas OneWire bus, FPGA Spartan III
Verification of an ASIC for battery level indication
Mikron AG
- Creating a WINAPI application for analysis, verification, and demonstration of a sensor chip for lithium-ion cells
- Carrying out the project independently, including compensating for internal chip bugs through software
- Implementing security measures against software tampering and copying
- Tools and languages: WINAPI, MS Visual C/C++ v6, Arcom I/O card, Xilinx FPGA, OneWire bus, MCI
Test Monitor - Support for a chip production test
Microtec GmbH Stuttgart
- Developing part of a production test program for ASIC testing on the DUO 176-S
- Designing and implementing an assembly program to support the production testing of an ASIC with embedded 8051 µC
- Characterizing an integrated 8-bit A/D converter and performing trim routines
- Calculating the temperature guard band based on CPK values
- Tools and languages: GCC, GNU tools, 8051 assembler
Hardware and software development, design, and QA
Battery Systems (Various Projects)
- Developing a microcontroller-based battery monitoring system (BMS) for hybrid buses, including cell internal resistance measurement
- Developing a battery development and test system with 16-bit measurements for consumer electronics and automotive
- Implementing driver software and test programs for production test equipment of battery modules
- Developing firmware for the intelligent Accuron battery based on 0.6 µm chip technology, including bootloader design
- Developing load-dependent algorithms to calculate remaining runtime for mobile phones
- Project management and prototype development based on lithium-ion technology
- Conducting audits and QA management as quality representative according to ISO 9001
- Tools and languages: PIC assembler, Borland C/C++, SMBus, CAN bus
Creation of CAD/CAM tools and simulators
BMW / Munich
- Creation of CAD/CAM tools for designing and testing microelectronic circuits like ASICs and PCBs
- Development of mixed-mode logic simulators and fault simulators in assembler and C
- Implementation of automatic test pattern generation and autorouting features
- Development of a tool database for BMW body construction using Oracle SQL Forms
- Implementation of an SQL Forms control for daily data backups at the BMW Munich development center
- Contributed to the development of a driving simulator for real-time display of measurement data on test tracks
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Automotive, Energy, and Manufacturing.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Research and Development, Information Technology, Quality Assurance, Project Management, and Operations.
Summary
- Low-level software development
- CMMI- and ASPICE-compliant concept, development, documentation and testing, development according to ISO 26262
- Battery technology: around 18 years of experience (Smart Battery Concept, charging regimes, battery management, BMS firmware models from coulomb counting to thermal monitoring and power prediction, energy storage, energy management, cell balancing, system communication and diagnostics, simulation including accelerated aging/ extraction of stress profiles in near-real-time mode, safety analyses of HV systems, Markov chain simulation)
- Functional safety; safety engineering and safety management since 2010
Skills
Operating Systems**
Real-time Operating Systems Like Ercos
Unix (Linux)
Windows 10
Hardware**
Digital Signal Processors
Embedded Systems
Emulators
Measuring Devices, Test And Measurement Equipment
Microcontrollers, Hc12 Derivatives ("Star 12"), Pic Families, Cypress Ez-usb, Fx2, Mpc 555x, Msp430, Infineon 164me, Tms570, Aurix, Etc.
Data Communication**
Usb 2 And Field Buses Like I2c, Smbus, Can, Lin, Spi, Onewire
Rs232, Rs454, Tcp/ip, Uucp, Xcp (Ccp), Smbus
Programming Languages**
Multiple Assemblers
C (Excellent Knowledge And Experience, > 20 Years)
C++ And C# (At Least 2 Years)
Fortran, Algol, Pascal
Python + Json, Unix Shell, Modeling Language Uml-2
Tools**
Codebeamer, Confluence
Unix Tools Make/makefile, Bazel
Sccs, Serena-pvcs
Labview Versions 6 – 12
Matlab/simulink/targetlink V3.0
Itemsoft (Functional Safety, Fmeda, Fta)
Enterprise Architect
Medini Analyzer (Functional Safety)
Provetech:ta
Ascet 4.2, Inca
Mks [3 Years], Doors [> 6 Years], Polarion [1/4 Year]
Pycharm/python – Development Environment
Windchill Pts, Rhapsody (Introduction), Ptc, Jira, Rhapsody
Code Warrior
I-system Ice 4000, Lauterbach Debugger
Mplab
Ms Visual C/c++ V6
Keil / Μvision
Merant Error Tracker
Easycase
Ibm Change
Canoe/canape/canalyzer/diadem
Database Systems**
Dbase, Ingres, Ms Access, Oracle Including Sql Forms, Doors, Windchill
Miscellaneous**
Development Of Software Products That Are On The Market In Consumer Electronics Battery Management (Example "Accuron")
Consulting On Battery Knowledge For Oems, Battery Users, Battery Manufacturers And Tüv Süd
Firmware Developer For The World's First Smart Battery With Sbs-compliant Charging System
Patent Holder For Algorithms In Smart Batteries
Inventor And Developer Of Own Tools And Methods In The Battery And Safety Engineering Field
Languages
Education
Technical University of Munich
Diploma in Physics · Physics · Munich, Germany
Certifications & licenses
TÜV SÜD Functional Safety Level 2
TÜV SÜD
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
Frequently asked questions
Do you have questions? Here you can find further information.
Where is Roland based?
What languages does Roland speak?
How many years of experience does Roland have?
What roles would Roland be best suited for?
What is Roland's latest experience?
What companies has Roland worked for in recent years?
Which industries is Roland most experienced in?
Which business areas is Roland most experienced in?
Which industries has Roland worked in recently?
Which business areas has Roland worked in recently?
What is Roland's education?
Does Roland have any certificates?
What is the availability of Roland?
What is the rate of Roland?
How to hire Roland?
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
Similar Freelancers
Discover other experts with similar qualifications and experience
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Support in Ongoing Project
Nearby freelancers
Professionals working in or nearby Vierkirchen, Germany