Papers by Keyword: Data Transmission

Abstract: To solve the low transmission reliability in Internet of Objects monitoring system of facility agriculture, this study discussed the influences of transmission reliability in Internet of Objects. Meanwhile, the factors influencing transmission reliability of Internet of Objects were analyzed. Then, based on the results obtained, corresponding solutions were proposed. This research plays a guidance role in further improvement of reliability and function management level in Internet of Objects monitoring system.

Abstract: To tackle such problems as low security, inefficiency and high cost in traditional data transmission between different security domains, this paper discussed the basic design decisions that form the first step one should consider, especially for creating a design with the advantage of high-efficiency and low-cost optical devices. It first explored the design issues of software and hardware systems with the application of various network separation systems. It then described the reliability features with regard to error detection and data integration, and the mechanism of the newly defined protocol structure. At last, it outlined the key design points for the system implement and measurement.

Abstract: s. This system adopts RS-485 bus-based data collection method and utilizes Oracle database to combine with network telecommunication technology and intelligent telecommunication technology. At the same time, it implements the real-time collection, transmission and analysis on electricity, water, gas,heat consumption and other energy consumption data. The system includes the simple and precise structure, collects each energy consumption data rapidly and provides the important technical supports for effective management and energy consumption control.

Abstract: A wireless data transmission system used to realize data transmission of ground penetrating radar (GPR) is designed. It including data receiver and sender overcomes the disadvantages of traditional GPR cable transmission system. STM32F407 chip and ATK-RM04 are core components of data sender. PC with a wireless network card is data receiver. System is designed with reference to C/S network model. Data receiver and sender are respectively developed with VC++ socket and RAW API of Lwip TCP/IP protocol stack. CP protocol is chosen as network transport protocol. Practical applications show that system can stably transmit data within 0m-20m and maximum loss rate is 0.005%. It is reliable and convenient for GPR’s application.

Abstract: Currently, the main network security mechanisms (such as firewall, intrusion detection, and vulnerability scanning) cannot prevent malicious attacks absolutely from the public network. Therefore, how to ensure the security of the information in the private network is a hot topic. In this paper, a network physical isolation system is designed based on private protocol, in which internal and external networks are physically isolated during the data transmission. Thereby, the security of network information is protected and the network security problems can be solved effectively through this isolation system. This isolation system can be applied in high security network environment such as government departments and business units, etc.

Abstract: Multimedia technology application is very broad, almost throughout all walks of life, and in every corner of our life. This paper mainly introduces the key technology of multimedia technology, as well as the application of these techniques in agriculture.

Abstract: Water quality on-line monitoring is the necessary means to control water environment pollution and provide effective data for the research of water ecological restoration. Using free wireless communicating module of ZigBee we realized transmitting data from sensors on the river bank to the data storage center. Based on serial ports of micro-controller a protocol converter circuit was designed. With program the Modbus RTU protocol data packet on RS-485 bus was converted into ZigBee communication protocol and then transmitted to the Internet. Supplemented by GSM the reliability of data was enhanced. Water quality online monitoring system based on multiple data communication provides browse of real-time river water quality through the Internet network, which is fast and convenient to be exported for research.

Abstract: For the outstanding problems of traditional vehicle foundation braking performance testing systems’ such as lacking of test & analysis methods, inflexible and not easy to carry, a multi-channel Vehicle foundation break performance testing system based on CompactRIO embedded platform and LabVIEW was developed. The system design concept and concrete implementation of the key technologies such as parallel acquisition and data transmission, large data processing and time-frequency noise reduction were all introduces in detail. Actual break test experiment shows the effectiveness and reliability of the system.

Abstract: Many medical treatments need to confront problem of upper limbs’ rehabilitation. Major function of exoskeletal robot system for upper limbs rehabilitation is to assist patient to carry out upper limbs’ rehabilitation training. Main technology of exoskeletal robot system for upper limbs rehabilitation includes design of mechanical structure of exoskeletal robot, design of control system of exoskeletal robot and implemention of data and information transmission between exoskeletal robot and upper limbs of human body. Currently implemention of data and information transmission rely mainly on methods of acquiring sEMG signal and force feedback. Reviewing and analyzing the specific technical examples will be important way in improving and upgrading the technology in future. Current development trend of main technology is to advance degree of comfort, accuracy and effect in rehabilitation training. Further development trend of main technology henceforth is people-oriented, strengthening effect, improving efficiency, optimizing structure and reducing energy consumption that follow claims of medical treatment.

Abstract: Power transmission line monitoring is a general appellation of automated monitoring and scientific management for power transmission line by advanced techniques, and it’s an important basis for achieving smart grid. Its data transmission system is divided into access network and data network, the access network consists of a variety of terminals, tower nodes and aggregation nodes, which includes on-site and remote networks. The application of flexible and reliable network would guarantee to achieve a high-speed, reliable and transparent data transfer between master station and terminals in the system. According to the data transmission requirements of transmission line condition monitoring system, this paper studies the communication network technologies for access network in the perspective of private and public networks, and after a comparative analysis of these technologies, it proposes a principle of how to select reasonable communication network technologies for different application scenarios.