Lars Jespersen Email & Phone Number

Sønderborg, Dk

Sønderborg, Denmark

Nordborg, Dk

Together with 5 colleagues, I started a new R&D department with the purpose of developing a new series of domestic ultrasonic heat meters from DN15 to DN30. The overall task included developing the meters, gaining technological ownership, establishing laboratories, developing approved calibration facilities for R&D and production and designing production lines. We developed the first line of products from specification to mass production in China.I was in charge of all aspects of the electronics development including: Specification, systems architecture, EMC concept, development, design, PCB layout, test, documentation and participation in production start up.Achievements:• The heat meters SonoSafe10/SonoSelect10 were developed, cost optimized and put into production at the agreed time. The meters have a performance on par with the best european meters and have one of the lowest power consumptions vs measurement speed on the market. The meters currently run in mass production in China• I filed 8 patent applications, among others, a new reciprocal ultrasonic front end circuit and a ’high-speed’ low power communications interface for IO modules• I generated diagnostic ideas for: Flow measurement, application environment (EMC), electronics, ultrasonic transducers and temperature sensors• I developed a lifetime calculation model for LiSOCl2 batteries in cooperation with the battery supplier• PCBA production processes were optimized to run without ICT and FP tests, and for PCBA cleanliness in cooperation with a chinese EMS. A new PCBA cleanliness test method (CellCorr, DTU) was introduced at the EMS and in the incoming PCBA inspection• Numerous travels to China, South Korea, and Germany for assessment and selection of suppliers, cooperation with suppliers and training of chinese production engineers has contributed with valuable experiences in cross cultural cooperation.

Nordborg, Dk

2008- 2012: The main task was development of the measurement front-end prototype for a new generation of industrial digital ultrasonic flow meters, for both in-line and clamp-on measurement on gasses and fluids, in sensors with diameters from app. 10mm to 10m. The prototype had the possibility of connecting up to 8 ultrasonic transducers with resonant frequencies from 100 kHz to 4MHz, with signal dynamics of 80+dB - and optional temperature measurement in each transducer via an embedded PT1000 RTD.The project group included Siemens colleagues from Denmark, Germany, Austria and USA. The design was based on an AD Blackfin DSP, with a DAC for generating ultrasonic signals and an ADC for digitizing the ultrasonic receive signals. I also contributed to the development of measurement algorithms and signalprocessing.Achievements:• Contributions to Siemens’ clamp-on ultrasonic flow meter SITRANS FS2302006 - 2008: Development and maintenance tasks within ultrasonic and Coriolis flow meters and marketing support on ultrasonic flow meters. Cooperation and knowledge interchange with the development engineers from Siemens’ newly acquired clamp-on ultrasonic company (Controlotron, Hauppauge, New York)Achievements:• Contributions to the ultrasonic flowmeter FUS060• Contributions to the Sitrans FC Coriolis meters• Improved Controlotrons former 1010 clamp-on flow meter with a semi reciprocal front-end2003 - 2006: Development of SONO8000/FUS080 at Siemens. I also developed common IO modules for the ultrasonic and magnetic battery operated flowmeters FUS080 and MAG8000.Achievements:• The ultrasonic flow meter FUS080 is Siemens’ current flow meter for water and district heating applications. A flow meter that is sold in label variants as well

Nordborg, Dk

2002 - 2003: I started developing a new battery operated and EN1434 aproved ultrasonic flow meter (SONO8000) for water and district heating applications, in sizes from DN25 to DN800. The flow meter was finished at Siemens after their acquisition of the Danfoss Flow Division 2003.09.011997 - 2002: I developed the battery operated and EN1434 approved Medium Duty (MD) flowmeter SONO2500 in collaboration with Cambridge Consultants Ltd. UK. The experience from this project formed the basis for developing a succesive Low Duty (LD) DN15-DN25 heat meter. SONO2500 had great commercial succes and during 2002 it was sold off to Hydrometer GMBH together with the LD project.Achievements:• I filed patent applications on a new reciprocal zero-drift, zero-offset front end principle• during 6 months I had the task of transferring the LD technology to Hydrometers R&D department. The technology and the associated patents resulted in Hydrometers SHARKY series of heat meters, which have contributed to their succes as one of the leading european suppliers of heat meters. Among others, the technology decreased calibration times from days to hours1990 - 1997: I developed the front end HW and signal processing for the digital ultrasonic flow meter SONO3000, with sensors from DN25 to DN4000. I also contributed to measurement algorithms, diagnostic functionality and specification of the signal processing ASIC. After the main project, I developed SMPS PSU, IO modules and completed LVD and EMC approvals. SONO3000 was known as a market leading and innovative flow meter that was often used in problem applications due to a robust signal detection and a wide signal dynamic range.1988 - 1990: I developed embedded measurement SW for the magnetic flow meter MAG3000. Later, after debugging the front end hardware and completing EMC tests, I moved more and more into hardware development.

Nordborg, Dk

1984 - 1985: I contributed to the development of Danfoss’ 2nd industrial flow meter SONO2000.

Bachelor Of Science (B.Sc.), Electronics Engineering

• Skipped the admittance year due to my Electronics Technician education • During the education my main focus was analog electronics.

Education record

Electronics Technician, Designer Course, Electronics Engineeing

Electronics Technician, Electronics Engineering

Electronics

Electronics