Fujitsu Laboratories Ltd. has developed a field engineering technology that reduces the time to install wireless devices at a site to one-third that of previous methods thus enabling fast implementation of Internet of Things (IoT) services.
According to the information and communication technology (ICT) company in Japan, the radio wave simulation technology automatically incorporates a site's three-dimensional image data and video of the movement of the people to automatically determine where to install the wireless devices.
The company has simplified the handling of radio wave simulations with a 3D spatial digitising technology, which automatically creates the 3D layout data necessary for radio wave simulations through a laser scan from a few points around the site. Thereafter, the technology automatically corrects distortions and merges measurement data from multiple scans.
Fujitsu Laboratories said that this technology reduces the time to create layout data from around one week when creating it by hand, to around two hours including measurement time.
The radio wave simulation technology also features a moving body modeling technology. In order to reflect the impact of people's movements numerically, it was previously necessary to run many simulations, changing the placement of people a bit each time.
However, this new technology automatically measures the number of people coming and going, through the video. As such, the time for making patterns for different numbers of people and using these in simulations was shortened from three days to less than 15 minutes using an ordinary computer.
Additionally, Fujitsu developed a radio wave interference technology that automatically recognises and displays the wireless communications being used at site where IoT devices are installed. It visualises the state of signal congestion for each channel and location, as well as for each communications standard.
The technology enables even the non-experts to determine where the IoT devices should be installed, data transmission time spacing, and channel setting. It also recognises wireless communications such as Wi-Fi, Bluetooth, and ZigBee using a computation method of correlation coefficient between received signals and signal patterns prepared for each wireless standard.
The radio wave interference technology also uses the fact that when the received signal differs from the prepared signal patterns, the results of multiplication of the signal before frequency correction have high randomness in order to have high recognition performance. Fujitsu said leveraging this technology has improved the recognition sensitivity to twice than of previous methods.
Overall, Fujitsu noted that the new field engineering technology enables their customers to reduce the time needed before they start actual operations. Even after starting operations, Fujitsu added that these technologies make it possible to operate stably without any major trouble which can cause operations to stop.
Sign up for CIO Asia eNewsletters.