Zhengang Duan

Warehouse Logistics Control and Management System Based on RFID

This paper introduces the hardware and software of the warehouse logistics control and management system based on RFID (Radio Frequency Identification), and explains the design scheme and implementation method of the system. The read/write operation is done using the electronic tag through a tag reader. The logistics control is implemented with PLC by communicating with SIEMENS WinCC configuration software and OPC technology. By accessing a SQL Server, functions such as automatic data storing, querying and deleting of goods and warehouse information are realized. Combining the former technique, the operations such as warehousing, warehouse delivery and goods moving are accomplished. This paper provides an application example of the integration of electronic tag technology and logistics control/management.

Application of configuration software WinCC in logistics automatic control system

This paper presents the application of WinCC in Logistics Automatic Control System on the experiment facility of miniature warehouse. The information management system, the supervisory control system and the PLC execution part are developed. The communication between WinCC and PLC based on the PROFIBUS protocol is implemented. DDE Communication, VB as server and WinCC as client, is realized. The system combines information management and supervisory control together and works well. It would be applicable to industry after deeper study.

Research on the low-power of air-conditioner remote control system terminal device based on Zigbee technology

In the field of intelligent home, when using Zigbee technology to network the management of air-conditioner control device, it is very necessary to reduce the power consumption of battery-powered devices in the network. Through the research of Battery-powered equipment composed by the CC2530 and MSP430, we provide a practical way to extend the working hours of the equipment, to reduce the power consumption and to save the overall cost of the system from both software and hardware devices optimized. Test results show that, after low-power processing the terminal equipment, the working time of the two batteries, whose capacity are 800mAh 1.5V, grow from 11 days to about 280 days.

The PV array maximum power point tracking in the shadow of conditions

The output of photovoltaic array has several corresponding local peaks of power-voltage curve with the existence of the shadow, In order to make the photovoltaic arrays continue to work in the maximum power point, need to create conditions for the model of the PV array, On the basis of the model, there are having some further detailed analysis and research about the characters of the local photovoltaic array under the shadow. A method was proposed which the maximum power point tracking of photovoltaic array, In order to achieve a novel method based on disturbance observed maximum power point tracking. This method is executed by DC-DC circuit which is controlled by the algorithm TMS320F28027 processor. To achieve maximum power photovoltaic (GMPP) output under complex conditions.

A design and optimization of IM system server

According to the IM systems functional requirements, completed the overall design of IM system server, which has good function of communication and plug-in management. Propose the user login server optimized design, build a complete user login process, and design custom protocol packet structure. As well as design and implement the optimization methods of login server by using software. Finally, verify the feasibility and reliability of the system in a lab network environment, so as to provide a stable system server when the number of users will growth continually in future.