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Some approaches and techniques that allow conducting of complex physiological research using closed-architecture measurement systems of different manufacturers are discussed. The experience in developing a system with flexible configuration and in solving arising problems by virtue of integration of equipment using an external synchronizing device, is described. Parallels are drawn with the modern...
Communications within power converters is becoming increasingly important particularly with the evolution of multilevel converters having distributed control structures. In the not so distant past, communications were used primarily for reference point setting and monitoring. Currently however communication is taking on an integral role in the control of the power converters particularly those with...
The method of structures creation of digital redundant devices with use of majority elements for fail safety support is considered in this report. This method is used for real-time systems. It is characterized by the fact that the redundant device is built in the form of excess structure with the loaded reserve, and its recovering organs are implemented on the basis of majority elements. The Important...
This paper analyzes some traditional design ideas about serial receiving program. For their shortcomings, a method of subsection receiving with frame synchronization(SRFS) based on DMA is proposed. The main idea of this method is to encapsulate the communication data into a frame with the specified structure, then divide a data frame receiving into several specified segments and make receiving process...
Collective operations, such as allreduce, are widely treated as the critical limiting factors in achieving high performance in massively parallel applications. Conventional host-based implementations, which introduce a large amount of point-to-point communications, are less efficient in large-scale systems. To address this issue, we propose a design of switch chip to accelerate collective operations,...
Applications of advanced electronic technologies have greatly increased the efficiency and performance of safety-critical computer systems. In addition, the architectural flexibility of these systems reduces the types of printed circuit boards they can use, thereby reducing difficulties with maintenance. A newly developed safety-critical computer system is presented in this paper. The system uses...
In this paper, we report the design and implementation of a reconfigurable system that exploits regional clocking resources that exist in Xilinx Virtex-4 FPGAs for increased performance and, for the first time, enhanced reliability. Unlike previous approaches, our system is able to individually manage the regional clock buffers (BUFRs) to adjust the frequency delivered to each hardware task and to...
In this paper we presents the design of a very low power and high throughput AES processor. A sophisticated AES algorithm without sacrificing its security features, throughput and area is used to design the processor. Due to the optimization of the algorithm and a number of design considerations, the processor shows its superiority over other AES processors. The proposed processor is simulated on...
Wireless Sensor Network is an emerging technology which can significantly reduce the cost and the time needed to monitor the conditions of civil structures. This work presents W-TREMORS, a new wireless sensing system for high-frequency distributed data acquisition. Our sensor network is based on the low-power and low-data rate standard IEEE 802.15.4, and we used inexpensive hardware. Nevertheless,...
TWI (Two-wire Serial Interface) bus is simple but powerful and flexible. It supports master and slave operation. The system is based on TWI, with a couple of ATmega32 as masters and a LPC2478 chip as a slave to achieve communication among nine different MCU, which greatly increase the efficiency of LPC2478 and the whole system. The communication nodes in the system can be dynamically added or removed...
Safety-critical systems have to work correctly and meet time constraints even in the presence of faults. Hardware fault-tolerant technology can provide a high level of reliability, but custom-designed hardware and operating system are too costly to be accepted by most common applications. At present, some research works about hot-spare fault-tolerant systems based on virtualization technology have...
As semiconductor technology scales into the deep submicron regime the occurrence of transient or soft errors will increase. This will require new approaches to error detection. Software checking approaches are attractive because they require little hardware modification and can be easily adjusted to fit different reliability and performance requirements. Unfortunately, software checking adds a significant...
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