Keypads and touchscreens make a wide range of different devices easy and intuitive to operate. However, the material of which they are made is subject to especially high loading through constant use and, at some point, becomes impaired in its functionality. A robot system developed by Fraunhofer IPA now allows device manufacturers to realistically simulate such loading in order to determine how durable their devices are. Typical applications of various devices can be simulated for any desired length of time in automated test runs.
Thousands of repetitions in the space of just a few days: while manually impossible, this can be accomplished by a newly developed robot system from Fraunhofer IPA. Whether it’s a matter of pressing keys, inputting data or using fingers or a stylus, e.g. for a signature pad – the robot system is capable of realistically simulating typical applications of human-machine interfaces.
Such a system can test how long the materials human-machine-interfaces are made of and the associated functions remain fully functional. This provides device manufacturers with accurate knowledge about the quality of their products, which is, moreover, of importance for possible warranty claims. In addition, customers can gain accurate information on durability.
Robot imitates typical usage with its forces and path
For each device, the scientists collaborate with the manufacturer to first draw up the typical usage scenarios and loading profiles and to set up the robot system. This includes, in particular, setting up the end effector, which is capable of holding a variety of tools – similar, for example, to a finger or stylus – and simulating various loading scenarios.
The programming of the robot system depends on features that describe the interaction performed by the user on the devices with human-machine interfaces. The scientists measure these features in authentic situations with test subjects. That could include the duration and force registered during the interaction. If the device under test is a touchscreen, it might also be relevant where the action is typically performed. This data is used by the scientists to suitably configure the forces and path of the robot.
“We’ve succeeded in setting up the robot system so that it is capable of accurately simulating an application such as the use of a cash machine. Force sensors in a robot-guided finger-like end effector accurately measure and evaluate the force exerted by the user in a multiplicity of interaction cycles,” explains Milad Geravand, research assistant at Fraunhofer IPA. The accuracy of the tests is guaranteed by measuring systems as well as by regular checks by the employees.
Uniform quality of testing
“For a device manufacturer, automated testing offers the advantage that the performed conditions are always identical and the test scenarios are reproducible and therefore comparable. The motion of the robot system can be precisely controlled to guarantee that the testing is completely traceable and verifiable,” says Geravand. By the end of each intense test, device manufacturers are provided with a detailed report on the tests and results as well as with a brief summary, which can also be used as a reference for customers. The scientists are ready to employ this technology for life-cycle evaluation of human-machine-interfaces either in the labs at Fraunhofer IPA or on the manufacturer’s site by setting up the testing systems.
Milad Geravand; 0711-970 1191; firstname.lastname@example.org
Press and Public Relations
Jörg-Dieter Walz | Phone +49 711 970-1667 | email@example.com | Fraunhofer Institute for Manufacturing Engineering and Automation IPA | Nobelstrasse 12 | 70569 Stuttgart
Jörg Walz | Fraunhofer-Institut für Produktionstechnik und Automatisierung IPA
Watching atoms move in hybrid perovskite crystals reveals clues to improving solar cells
22.11.2017 | University of California - San Diego
Fine felted nanotubes: CAU research team develops new composite material made of carbon nanotubes
22.11.2017 | Christian-Albrechts-Universität zu Kiel
High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...
Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...
The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
24.11.2017 | Physics and Astronomy
24.11.2017 | Health and Medicine
24.11.2017 | Earth Sciences