Soon there will be no need for special timers to switch lighting on and off or operate household appliances when the homeowner is absent. In future, all this can be done by means of a smartphone or PC, thanks to Internet-enabled wireless power outlets that support the new IPv6 Internet protocol.
The table lamp can be switched on and off by means of a smartphone app – thanks to the HexaBus wireless power outlet.
© Fraunhofer ESK
The smart socket was developed by researchers at the Fraunhofer Institute for Communication Systems ESK in Munich in collaboration with the Fraunhofer Institute for Industrial Mathematics ITWM in Kaiserslautern and the industrial partner embedded brains GmbH. “We have been able to connect the power outlets wirelessly using the IPv6 protocol,” says ESK research engineer Günter Hildebrandt. “All household appliances plugged in one of the sockets can be switched on and off remotely using an IPv6-compatible device such as a smartphone or laptop PC – from anywhere.”
The wireless power outlets are a component of the HexaBus home automation system that was developed by the ITWM as part of the mySmartGrid project (www.mysmartgrid.de). “The HexaBus components make the smart home of the future a reality. They enable household appliances to be controlled intelligently, thus optimizing or reducing electricity consumption. For example, the householder can start the washing machine during cheap-rate off-peak hours, or run the dishwasher when the photovoltaic panels on the roof are generating sufficient power,” says industrial engineer Mathias Dalheimer of the ITWM, who leads the SmartGrid project and is its chief programmer.
Intelligent control and measurement of power consumption
In addition to the wireless power outlets, the HexaBus system employs a specially designed USB stick that plugs into any compatible, off-the-shelf router. The user enters the command to switch on an appliance via a standard web browser or an Android-compatible smartphone app. The router and stick then forward the data to the power outlet. This two-way communication function also allows the wireless power outlet to send data to the smartphone, informing the user how much power various appliances are consuming at any given time. Thus, the user can optimize their power consumption. “The combination of parallel control and measurement functions is an entirely novel feature that no other wireless power outlet has offered before,” says Hildebrandt.
Because the HexaBus system is based on the IPv6 data communication protocol, a separate IP address is assigned to each power outlet, and thereby to each connected appliance, enabling them to be accessed directly. But how did the researchers go about integrating Internet functionality in the wireless power outlets and USB sticks? To do so, Hildebrandt and his team developed special protocol software and an extension to the Contiki operating system that enables it to handle the 6LoWpan (IPv6 over Low power Wireless Personal Area Network) communication protocol. Contiki is an open-source operating system for networked embedded devices such as the microcontrollers incorporated in wireless power outlets and USB sticks. A linked web browser protocol enables users to assign a separate name to each power outlet – such as “washingmachine.basement”.
Guaranteed data security
Users have no need to worry about the security of their data – all information is transmitted in encrypted form. To make this possible, the experts modified Contiki to enable it to operate with the AES-128 advanced encryption standard. Wireless control signals are transmitted in the 868-MHz frequency band. “This permits users to remotely control a widely distributed network of appliances. The distance between the power outlet and the router can be as high as 30 meters,” explains Hildebrandt.
The HexaBus power outlets are ready for commercial application. Their manufacture has been entrusted to embedded brains GmbH, the industrial partner that was also responsible for the hardware development of the power outlets and USB sticks. Meanwhile, the researchers have a new idea up their sleeves: they want to enhance their system with multihop networking capability. By linking together a series of power outlets, the router will be able to pass messages from one to another, thus extending the range of the communication system – a solution that could be of interest to businesses for their office buildings and industrial sites.
Günter Hildebrandt | Fraunhofer Research News
Scientists print sensors on gummi candy: creating microelectrode arrays on soft materials
21.06.2018 | Technische Universität München
Electron sandwich doubles thermoelectric performance
20.06.2018 | Hokkaido University
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...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
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...
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.
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...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences