“Measuring and evaluating noise directly on the machine!” Following that goal Fraunhofer IDMT in Oldenburg, Germany, will demonstrate the prototype of a new cognitive system for the predictive maintenance of production facilities at the Hannover Messe from April 23 – 27, 2018, Hall 2, Booth C22. Intelligent battery-powered acoustic sensors process audio signals from machines and systems on the spot. From the information that is forwarded wirelessly to an evaluation unit, it is possible to draw conclusions about the condition of the production facilities and to avoid possible damage. Industrial customers benefit from a cost-effective "Industrie 4.0" solution that minimizes downtime.
Axial piston pumps convert mechanical into hydraulic energy. On construction or agricultural machinery, they help to lift heavy loads or are part of industrial conveyor technology.
"So far, these systems have not had permanently installed acoustic condition monitoring", reports Danilo Hollosi, Head of "Acoustic Event Recognition" of the Oldenburg Project Group for Hearing, Speech and Audio Technology at the Fraunhofer Institute for Digital Media Technology IDMT. "Cognitive systems can be very powerful in this regard. We have illustrated this with our new demonstrator."
Recognize early when it is no longer running smoothly
Together with partners, the scientists have mounted on axial piston pumps batteryoperated sensors that are able to record the noise of the pump via the air, to process it, to compare it with reference audio data and to send the information wirelessly to a digital evaluation unit.
Not only can conclusions about possible undesirable developments be identified at an early stage; statements about the nature of the problems can also be made – for example, if there are problems concerning bearing clearance or hydraulics. This provides the opportunity to intervene before major damage to powertrains or hydraulics occurs.
Use of machine learning methods
"We have trained the cognitive system with machine learning based on previously acquired pump audio signals", Hollosi says. A central infrastructure for data processing is not necessary. This saves costs: while servers can consume amounts in the five-digit range, the price per sensor remains in the double-digits. Another advantage: signal processing on site will require less data for training. "Customers benefit from a datasecure technology platform that is suitable for a wide variety of audio scenarios andthat can be easily retrofitted and scaled to any size.
The networking of sensors via the Internet for remote maintenance is also possible", Hollosi adds, summarizing the advantages. In this process, the Fraunhofer IDMT incorporates the expertise of its project group Hearing, Speech and Audio Technology in Oldenburg. "Our colleagues are experts in technologically recreating the capabilities of the human ear. They teach the systems to adhere to given parameters when evaluating audio data, to take into account environmental noise patterns and to exclude out background noise", says Hollosi.
Ready for the market: Technology Readiness Level 8
The technology is funded by the BMBF (German Federal Ministry of Education and Research) in the ACME 4.0 project. In the meantime, the partners have reached the 3rd project year and Technology Readiness Level 8. "Our prototype works," says Hollosi. In 2018, it will be field-tested. At the same time, the scientists are working with Infineon on predictive maintenance for chip production. The demonstrator will be shown by the Fraunhofer IDMT at the Hanover Trade Fair: A loudspeaker will play the operating noise of the axial piston pump. Wireless sensor nodes can be configured via a tablet. The feedback on the detected acoustic event is then displayed on the tablet.
Christian Colmer | Fraunhofer-Institut für Digitale Medientechnologie IDMT
LZH showcases laser material processing of tomorrow at the LASYS 2018
22.05.2018 | Laser Zentrum Hannover e.V.
Achema 2018: New camera system monitors distillation and helps save energy
22.05.2018 | Technische Universität Kaiserslautern
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences