Papers by Keyword: Wireless Technology

Abstract: The electrical monitoring is the most important part of industrial production, with industrial production situation of increasingly complex, also more and more high to the requirement of wireless industrial monitoring and control system. In this context strengthen monitoring system based on ZigBee wireless industry research is of great significance. Wireless electric monitoring system based on ZigBee has more advantages compared with traditional wireless monitoring technology. To strengthen the research of this technique is a necessary choice to meet the requirements of the actual industrial production. This article will revolve around ZigBee technology to explore how to enhance the level of electrical control system.

Abstract: The paper develops a high precision gas flow meter test system based on ARM technology and wireless network management on the basis of the original gas flow measurement equipment,comparise the value of the output fluid that continuously through standard flowmeter and detected flowmeter in the same time interval in order to determine the measured performance test flowmeter. At the same time, The system adopts industrial touch screen to achieve human-computer interaction interface,devices in the workshop share a large pressure device through the wireless transmission control; connect each device and server through the WiFi;structure Ethernet; and realize remote Internet network management.

Abstract: Controlling home appliances through network, as one hot topic in the Internet of Things, can provide a way of convenient remote control of home applications. It will greatly improve the user experience and free users from the tedious and redundant controlling actions. In addition, the potential of home appliances network also reflected in the home security and energy conserving and environment protective. Since remote control and user authentication can effectively help to guarantee the home security and a centralized device control is more effective to reduce energy consumption and waste of resources. "My Private Housekeeper" is a novel network-based appliance control system. In this paper, by taking several popular household appliances as example, we describe the system design and implementation in details. Using the Atom platform as the control center, our system can remotely and locally control equipments on real time through wireless technology and voice interface. The mechanism used on mobile platform, which is connected to the Internet, is similar to instant messaging. The voice control part is based on MST omnidirectional microphone, which can capture sound signal within a radius of 5 meters, and keep sound quality for speech recognition. This system uses the XML-based device description and control protocol, which was designed and developed by our group, to implement device self-describing and control information response.

Abstract: Abstract. LTE-Advanced is positioned on the higher data rates and a greater system capacity. In order to meet the goal, LTE-Advanced will undoubtedly introduce new wireless technology. The relay technology as key candidate technology of LTE-Advanced system can brings greater coverage and system capacity for residential area. Cooperative relay signal processing methods include amplification forward relay and decoding relay. So, proposed improve the cooperative relay based on the space-time coding, introduced precoding in front of the relay data sent and find out the optimal space-time coding transmission. Through the computer simulation, fully verified the feasibility of improved space-time coding transmission algorithm.

Abstract: This paper mainly in combination with RFID to construct a set of power system equipment remote control, first on the tags reader received after the use of Visual Basic to determine the signal and transmits the signal via the RS232 cable to the control circuit 8051 to control the instrument power switch. The topic written in Visual Basic RFID, using features such as: personnel control systems, access control systems are derived from the time of access control systems, many instrument control systems, and use the records stored in the form of the function, the other circuit is transmit signals to Visual Basic 8051, then by 8051 to control the instrument power switch.

Abstract: This paper introduces a kind of alcohol test system composed of hardware based on alcohol instrument, and software based on data management, which is the foundation of internet wireless technology transmission platform based on embedded web server. It can provide reliable wireless sensor networks and complete information integration and conformity through sites control platform, present wireless data transmission technology and data management system in order to achieve unified management of information and law enforcement. Practice shows the alcohol test system has obvious advantages with stability, high accuracy, and strong anti-interference.

Abstract: A remote online machine monitoring system is developed across a desktop PC and mobile devices to monitor and control machine’s working conditions. A server-client network structure is constructed for real time communication between server and client modules. Within the server module, data I/O (input/output) communication is utilised to acquire machine condition data and to pass control commands to the machine-controller interface; feature extraction and decision making are applied to detect machine’s operating status. The server and client modules allow mobile users to remotely access the server via PDA and Wireless Wi-Fi connectivity to regulate the machine conditions by tuning the controller parameters. Remote communication between the modules with different platforms/operating systems is implemented by combining the Web Service application program interface with MXML-based cross-platform programming standard. The system developed is validated by a case study of monitoring the working conditions of an air-conditioning system.