Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fraunhofer IIS researchers receive Joseph von Fraunhofer Prize for 3D Hall sensor

11.06.2013
Honoring the development of the magnetic field sensor 3D Hall sensor, Michael Hackner, Dr.-Ing. Hans-Peter Hohe and Dr.-Ing. Markus Stahl- Offergeld of Fraunhofer Institute for Integrated Circuits IIS in Erlangen receive the Joseph von Fraunhofer Price 2013.

This prize has been awarded by the Fraunhofer-Gesellschaft every year since 1978 in recognition of outstanding scientific work by members of its staff leading to the solution of application-oriented problems. Over 200 researchers have meanwhile seen their work honored with this prize, which is now valued at 50,000 euros. The award ceremony took place in Hannover on 10th of June.

Magnetic field sensors are used to measure the position of machine parts and products with zero contact and zero wear – in a modern car, around 100 of such sensors are busy monitoring safety belt buckles and door locks, registering pedal positions, or are used for ABS, EPS, and engine control. They are cost-effective and robust, however, these conventional sensors generally measure only the magnitude of the magnetic field perpendicular to the chip surface. Good enough in many ways, magnetic field measu- rement remains imprecise and susceptible to interference. Michael Hackner, Dr.-Ing. Hans-Peter Hohe, and Dr.-Ing. Markus Stahl-Offergeld from the Fraunhofer Institute for Integrated Circuits IIS were not satisfied with these limitations. They wanted precise position measurement with the advantages of magnetic field sensors, and so they set about developing a 3D Hall sensor.

Manufactured using standard processes

“First we connected up several sensors on a chip in order to improve the measuring accuracy of the individual sensors,” says Markus Stahl-Offergeld. “Next we arranged several of these sensors to measure the three-dimensional magnetic field at one point. The result was our pixel cells.” And so a new generation of 3D Hall sensors was born, capable of measuring all three spatial axes of a magnetic field and calculating the exact position of an object. The sensor chip contains a designated sensor for each of the three magnetic axes. These sensors are placed together in the pixel cell and attain a resolution of just a few microteslas depending on the measurement speed. Tesla is the unit for magnetic flux density. Also integrated directly on the chip are the evaluation circuit and a coil, which enable self-testing and calibration. “In spite of its complexity, the HallinOne® magnetic sensor can be manufactured using standard processes of semiconductor technology – and that makes it cost-effective,” explains Dr.-Ing. Hans- Peter Hohe. For this global technological breakthrough, the three Fraunhofer IIS developers have been awarded a Joseph von Fraunhofer prize this year.

Long-term partnership

One of the first companies to exploit the potential of HallinOne® was Seuffer GmbH from Calw in southern Germany. As far back as 2006, it launched a sensor that prevents washing machines from wobbling and creeping across the floor during spin cycles. A magnet is attached to the tub and the sensor to a fixed, unmoving part of the washing machine. Depending on how much washing is in the drum and how it is distributed during a spin cycle, the tub moves and therefore the magnet, too. The sensor measures this movement, evaluates the data, and transmits it to the washing machine. If the drum is wobbling, it is stopped briefly and shaken around a bit in order to distribute the washing more evenly. Fraunhofer IIS and Seuffer are currently develo- ping a wireless window sentinel, which detects whether a window is open or closed and transmits this information via a wireless sensor network combined with energy harvesting.

“Our next goal is to develop a sensor for 5-axis position measurement,” says Michael Hackner. “This will allow us to detect more mechanical degrees of freedom simultane- ously, including translatory and rotary movements by the magnet in all directions. It already works in laboratory tests, but the system still needs some adjustments before it is ready for real-life applications.” Such applications could include use in the control systems of computers, construction machines, robots and airplanes.

Verena Höltl | Fraunhofer-Institut
Further information:
http://www.iis.fraunhofer.de/en/pr/2013/20130610_Fraunhofer-Preis.html

More articles from Awards Funding:

nachricht Muscle Growth in the Computer: International Team Wants to Unravel the Formation of Myofibrils
13.06.2018 | Technische Universität Dresden

nachricht Innovation Award of the United Nations Environment Programme for PhD Student from ZMT
22.03.2018 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)

All articles from Awards Funding >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>