The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The ControlNet network is designed to be the central communication architecture for interoperating automation products. It provides fast, deterministic scheduled data transfer for control purposes and unscheduled non–time–critical messaging for configuration and house–keeping on the same network. This is accomplished by partitioning the bandwidth into a scheduled portion that is guaranteed to be delivered...
It is analyzed the characteristics and developing direction of F-P fiber optic sensor signal acquisition system, in this paper. And based on ARM core microprocessor and the open source Linux operating system for embedded system, it proposed a development idea of fiber optic sensor signal acquisition system based on embedded system, and as well as into the technique and approach of related embedded...
Support Vector Machine (SVM) was a new and outstanding machine learning as an efficient machine learning tool in dealing with small samples. In this paper, an new automatic eye position algorithm based on SVM is introduced, which is fast and accurate and the eyeball’s center position velocity is only 1 second. The position accuracy is up to 95 percent and average position error is about 3 pixels....
In this paper, a real-time multi-channel high-speed data acquisition system for fiber-optic strain array based on DSP was introducted, which the bulk buffer of the system is implemented by combination of CPLD, DSP and SDRAM, and the data transfer is implemented by the combination of DSP, FIFO, USB and USB-HUB. The system could not only work independently in single-channel mode, but also implement...
Based on SVM, A fast and accurate algorithm of automatic eye localization is introduced for face image's normalization in face recognition, which the localization of the eyeball's center can be accomplished in a second, and the localization accuracy can arrive at 95 percent and the average localization error is 3.16 pixels. Compare to existing eye localization methods, the method mentioned in this...
In this paper, based on face recognition, the core algorithm is studied, which was applied in Access Control System. This algorithm carries on the Fisher and PCA transformation in the face image, which the main characteristic vector of the PCA is fused to form a new one that is taken as the distinction standard. By means of ORL and Yale face database, the recognition rate is up to 91.5% and 96.7%,...
Using terahertz time domain spectroscopy (THz-TDS), the photoresist's absorption spectrum was measured in this paper. From the experimental data, A significant difference was found in the absorption between the exposure and unexposure photoresist. And we also discuss the requirements to sample preparation imposed by the lack of sharp spectral features in the absorption specra. The experimental results...
In this paper, we introduced a new fiber-optic strain sensor with white light interferometric principle based on Fabry-Perot, which is capable of providing measurement for the building strain. The signal processing of system is that the optical signal wavelength is modulated in the Fabry-Perot cavity and is demodulated during the optical-electricity transform. Compared with a common optical fiber...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.