Robohub.org
 

Testing the lifetime of human-machine interfaces in a few days

by and
07 March 2016



share this:
The developed robot system is capable of simulating thousands of typical usage scenarios on any kind of device with a human-machine interface, such as a touchscreen. (Source: Fraunhofer IPA/Photo: Rainer Bez)

The developed robot system is capable of simulating thousands of typical usage scenarios on any kind of device with a human-machine interface, such as a touchscreen. (Source: Fraunhofer IPA/Photo: Rainer Bez)

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. The 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 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 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.

For each device, the researchers collaborate with the manufacturer and draw up the typical usage scenarios and loading profiles 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.

“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.

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 researchers measure and process 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.

Uniform quality of testing

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.



tags: , , ,


Fraunhofer IPA Fraunhofer is the largest research organization for applied research in Europe.
Fraunhofer IPA Fraunhofer is the largest research organization for applied research in Europe.

Martin Haegele is Head of Department Robots and Assistive Systems at Fraunhofer Institute of Manufacturing Engineering and Automation IPA in Stuttgart/Germany.
Martin Haegele is Head of Department Robots and Assistive Systems at Fraunhofer Institute of Manufacturing Engineering and Automation IPA in Stuttgart/Germany.





Related posts :



Countering Luddite politicians with life (and cost) saving machines

Beyond aerial tricks, drones are now being deployed in novel ways to fill the labor gap of menial jobs that have not returned since the pandemic.
04 December 2022, by

Call for robot holiday videos 2022

That’s right! You better not run, you better not hide, you better watch out for brand new robot holiday videos on Robohub!
02 December 2022, by

The Utah Bionic Leg: A motorized prosthetic for lower-limb amputees

Lenzi’s Utah Bionic Leg uses motors, processors, and advanced artificial intelligence that all work together to give amputees more power to walk, stand-up, sit-down, and ascend and descend stairs and ramps.

Touch sensing: An important tool for mobile robot navigation

Proximal sensing often is a blind spot for most long range sensors such as cameras and lidars for which touch sensors could serve as a complementary modality.
29 November 2022, by

Study: Automation drives income inequality

New data suggest most of the growth in the wage gap since 1980 comes from automation displacing less-educated workers.
27 November 2022, by

Flocks of assembler robots show potential for making larger structures

Researchers make progress toward groups of robots that could build almost anything, including buildings, vehicles, and even bigger robots.
25 November 2022, by





©2021 - ROBOTS Association


 












©2021 - ROBOTS Association