Tidal level is very important in transportation, surveying and mapping, fishery and military fields. An automatic tidal level recognition algorithm based on water gauge images was studied to solve the problem that the water gauge data in ocean observation stations cannot be observed and compared with tidal level automatically. The numbers in front of the water line on the water gauge image were extracted by image segmentation technology and recognized by convolutional neural network. Finally, the automatic measurement of the tidal level of the water gauge is realized with 91.1% recognition success rate which promotes the unmanned and intelligent process of the ocean observation stations.
KEYWORDS: Wireless communications, Microcontrollers, Data communications, Data processing, Data conversion, Standards development, Receivers, Data transmission, Transceivers
At present, the wireless gateway is most be used to achieve wireless communication between Profibus-DP master and slave stations. Due to the long time delay of wireless gateways, it can only be used for low baud rate communication. As such, a communication module using wireless repeater solution is designed in this paper, to realize Profibus-DP wireless communication. This article describes in detail the communication timing requirements of Profibus-DP and the software and hardware design of the wireless communication modules, especially in accordance with the Profibus protocol and timing requirements to realize the wireless communication of Profibus-DP at a high-speed communication rate.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.