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In order to achieve better network communication between embedded devices, we complete a network driver program based on embedded processor platform. In the definition of internal data type, We choose little-endian due to our processor and use LwIP build-in error code in arch.h file. Moreover, LwIP provides users with a convenient configuration at the beginning of its design. Additionally, in order...
With the fast development of embedded Web, the needs of communication between different embedded devices through Internet become increasingly intense. Taking application requirements into account, we utilized a customized embedded 32-bit processsor as the hardware platform which contains a MAC module. On this basis. We design the protocol layer network interface and a network driver based on descriptor-based...
This paper presents a new simulation platform for UHF RFID tag development, which efficiently reduces the development time and cost to achieve rapid, flexible and efficient simulation and design for UHF RFID tag. The simulation platform includes the RF analog front end and the tag control logic, which is implemented in the Altera FPGA. Besides coinciding with ISO/IEC 18000-6B/C series and EPC C1G2...
In the Digital Rights Management (DRM) platform, the weak security of user authentication online and the digital content usage offline are analyzed, and a dual-factor dynamic authentication scheme is designed, which is based on the Personal Identity Number (PIN) authentication and the hardware USB Key digital certificate authentication. On this basis, the architecture of the dynamic certification...
This paper focuses on improving the quality performance of 1-Wire bus which is mostly necessary to practice application. The key technology about 1-Wire bus that applies to DS18B20 and other 1-Wire bus serious manufactures is introduced in detail. The numbers of sensors hanging on 1-Wire bus are received according to the data bus driving ability and communication distance produced by our experimental...
This paper presents the design of a passive UHF RFID transponder in compliance with the ISO 18000-6C protocol operating at the 915MHz ISM band. The proposed tag IC is implemented with several advanced low-power techniques aiming at extending the range of communication. Since the on-chip oscillator is particularly sensitive to process, voltage and temperature (PVT) variations, the baseband processor...
A specially-designed wireless BSN (body sensor network) platform was proposed for in-home health monitoring applications. The BSN platform was composed of BSN nodes and a base-station. The BSN nodes with advantages of small size and low power consumption were attached on human body to collect physiological data, and transmit wirelessly to the base-station which served as a master node within a BSN...
In theory, the paper presents an Automated Negotiation Model by applying negotiation strategies and utility function. In methodology, the paper establishes a negotiation mechanism which can improve both the automated processing flow and the automated trade by using agent technology. At last, simulate the process of Electronic Commerce automated negotiation and analyze the output of the program on...
Dynamic self-organized computer architecture (DSAG) based on Grid-components departs computer components to grid components, and dynamically aggregates and organizes these components to realize architecture-on-demand. We take the important feature, that CPU centered design principle should possibly become memory centered design and optimization. We propose a novel computer architecture Gridded Memory...
With increase of IC clock frequency, copper interconnect in Print Circuit Board (PCB) reaches limitation. Inter-chip Optical Interconnect (OI) is ideal alternative solution and its technical challenges are being solved. Memory bus has most complex interface, most rigid bandwidth/latency demand and most serious signal integrity problems. When applying inter-chip OI on memory bus, extra latency effect...
Increasing network and data intensive applications demand more to computing and memory capacity. But tight coupling between CPU and memory makes it hard to share memory components, resulting in difficulty to improve system performance and reduce system cost. Furthermore, nowadays memory architecture cannot adapt "small computing, big memory" feature of application. Supporting by optical...
The cluster-based communication protocol in wireless sensor networks can decrease the energy consumption effectively. Since the reliability of the sensing task is seldom analyzed and the data-centric sensing task focuses more on the data reliability, the RBD (reliability block diagram) is used to model the data reliability of wireless sensor networks. Then the malfunctioning node is defined and researched...
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