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CMMI(Capability Maturity Model Integration) is a process framework which is organized by goals, practice and process area. The Maturity Level 3 stressed that the project level process must be tailored from the organization level process, that is to say, no matter how the project level process changes, it must satisfy the constraints of the organization level process. However, companies usually prefer...
We propose a novel hardware support for three relaxed memory models, Release Consistency (RC), Partial Store Ordering (PSO) and Total Store Ordering (TSO) in Network-on-Chip (NoC) based distributed shared memory multicore systems. The RC model is realized by using a Transaction Counter and an Address Stack based approach to enforce the required global orders on the shared memory operations. The PSO...
State of the art radiation tolerant SRAM-based FPGAs with large gate count offer powerful processing capability among devices qualified for space applications. Due to changing mission requirements the processing in a space instrument needs to be adaptable. Modern SRAM-based FPGAs can be partially and dynamically reconfigured and thereby offer a method of adaptability. To provide a flexible communication...
This paper analyzes the existing drawbacks of broadcast telephone system of coal mine, and introduces a design scheme of digital broadcast telephone system of coal mine based on TCP/IP protocol and Texas Instruments (TI) TMS320DM642 digital processor. The system makes use of audio codec chip TLV320AIC23B to achieve audio codec and adaptive anti-noise algorithm so that the output audio's quality could...
Wireless sensor network (WSN) is the network which is composed of a large number of intelligent sensor nodes, it has the ability of self-organizing network routing, therefore, it has been widely used. Building wireless sensor networks is the key to WSN nodes. This paper introduces the basic structure of wireless sensor network node based on ARM, and it delivers a detailed analysis on the operating...
Recently-proposed architectures that continuously operate on atomic blocks of instructions (also called chunks) can boost the programmability and performance of shared-memory multiprocessing. However, they must support chunk operations very efficiently. In particular, in lazy conflict-detection environments, it is key that they provide scalable chunk commits. Unfortunately, current proposals typically...
In this paper we present an extended and optimized version of a smart Direct Memory Access (sDMA) controller supporting different on-the-fly protocol stack acceleration concepts for Long Term Evolution (LTE) mobile terminals. In addition to the downlink processing, we analyse different on-the-fly hardware acceleration modes for the uplink protocol stack processing in layer 2 (L2). Moreover, the system...
This thesis introduces the architectures and characteristics of wireless sensor networks. According to their features and the application scope of each method, it puts forward a new whole design scheme, which adopts software structure based on .net micro framework to accelerate wireless sensor networks development and simplify system complexity. Concepts verification and prototypes system design are...
The paper presents a novel method for constructing soft servo networked motion control system via EtherCAT network. The EtherCAT network performance is analyzed in detail through comparison of it by other several industry Ethernet protocols. We give out the application PLC program flow chart of synchronous control. The experiment results show that the soft servo networked motion control system can...
The shop-level information integrated system is the glue of system integration between enterprise upper management systems and the underlying process control systems, the basic of executing enterprises' agile manufacture strategy. The field management and shop information integration are given more and more attention by enterprises, the methods and technologies of traditional shop management can't...
In the framework of the hardware platform, CC2420 chip which supports IEEE 802.15.4 protocol is used as RF transceiver controlling chip. 32-bit high-performance ARM processor LPC2138 is used as both protocol controller and data acquisition. Through the OP to improve the transmitting power and receiving sensitivity. The system adapts to the Universal 2.4 GHz band and it has a high transfer rate and...
To realizing the field working machine unpiloted, the proportional remote control system which based on the wireless data communication mode, SCM and wireless communicate protocol was designed. The field experiments indicate this system can remote control the machine beyond 300 meters (Line-of-sight),and can communicate with PC. As it can send the control data credibleness and stability, this system...
This paper implements an embedded system current industrial communication protocol. It is based on the fastest EtherCAT, as fast as a PC-based system. The EtherCAT Slave module is easily used due to the Master System composed of the Embedded System.
This paper presented fieldbus SOPC-based FSB (fast serial bus) controller using FPGA technology for CNC application, which used H/S(hardware/software) codesign method. This controller completed control of AL (application layer), DLL(data link layer) and PL(physical layer). In the controller, CAN-compatible hardware designed by VHDL handled with DLL and PL of FSB, while software run in soft processor...
With the geometry of the IC(integrated circuits) becoming smaller and smaller, more and more high-density integration, function integrated getting stronger and stronger and development cycle becoming shorter and shorter, the SoC (system-on-a-chip) design methodology based on IP-Reuse has become the main method to design IC. In order to automate IP-Reuse, tools must be created to combine parts of different...
This paper presents a method reusing a coverification system testbench throughout the refinement process starting from a functional C model of a distributed system with the goal to optimize the HW/SW partitioning and distribution to multiple cores of a system. The partitioned system can then be used as an executable HW/SW specification in the ensuing design flow. The presented paradigm was validated...
FlexRay is a new standard of network communication system which provides a high speed serial communication, time triggered bus and fault tolerant communication between electronic devices for future automotive applications. FlexRay communication controller (CC) is the core of the FlexRay protocol specification. In this paper, we first design the FlexRay CC protocol specification and function parts...
An important correctness issue for emerging multi/many-core shared memory systems is to ensure that the inter-processor communication through shared memory conforms to the memory ordering rules, as specified by the architecturepsilas memory consistency model. This presents a significant validation challenge. Growing system complexity makes it increasingly hard to identify all deep-state logic bugs...
The automatic ceramic powder storing and continuous proportional weighing (CPS&CPW) section for modern ceramic tile production line is usually a very large and complicated system, its developing works are often difficult, confusing and time-consuming. A flexible design system functioned as a convenient CAD platform for CPS&CPW process automation was established, corresponding techniques which...
Computer communication is now used in many endeavors in which security and privacy are important, both in government and in the private sector. To support the need for secure computer communication, Digital Technology Incorporated (DTI) has developed the Secure HUB** Executive (HUB), e verified secure operating system oriented toward supporting communications and other real-time applications. The...
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