Applied Mechanics and Materials Vols. 644-650

Abstract: In order to calculate the all-time apparent resistivity for large fixed loop more quickly, the transient electromagnetic field analytic expression for lager fixed loop in homogeneous half space is analyzed in this paper. The facts that the curve has a characteristic of translational expansion and contraction with the conductivity, the test point coordinates and observation time are discovered. A new method using translation algorithm to calculate all-time apparent resistivity is proposed for the large fixed loop. A new calculation equation of all-time apparent resistivity for large fixed loop is derived which shows that the method is feasible and effective.

Abstract: The ECG data storage system based on 32-bit stm32 microprocessor, parsing complicated communication protocol of BMD101 electrocardiograph signal acquisition module. It is implemented that ECG data real-time storage of BMD101 of high sampling rate with SPI serial bus to carry out the serial correspondence between SD card and chip. This paper uses the physionet medical packet to analysis the difference between HRV of two groups of ECG data which reflects the reliability of the ECG data storage system. The analysis results show that the storage system with almost no loss of ECG data, stable performance, can realize ECG data storage for a long time.

Abstract: Conductor galloping is a kind of phenomenon which is harmful to electric power equipment. If conductor galloping is found and risk assessment is made timely, it can greatly reduce the possibility of line short, open circuit. Currently, it is mainly rely on the way of manual inspection, in which there exists the monitoring blind area. In this paper, an intelligent danger classes detection system design method of conductor galloping based on S3C2410 and CC2530 meter data collecting and processing module. It is mainly responsible for the collection of abnormal accelerated speed information and abnormal recognition of power conductor, and the data through the Zigbee network are transmitted to the control center. The principal computer constituted by software is responsible for the information management, danger classes division of conductor galloping, and giving an alarm. The actual test proves that the system has a higher accuracy of assessment, stable performance and better robustness.

Abstract: UHF radio frequency identification system with write speeds, large storage capacity , recognition distance and simultaneously read multiple tags , etc. , has been more widely used in logistics. Introduced in line with ISO 18000-6 standard UHF RFID tag main characteristics, structure, working principle and write methods, proposed the corresponding reader solutions, focusing on the reader hardware design and software program flow. The application results show that the reader read and write speed (single tag 64bit / 6ms), recognition rate, recognition distance (≥ 4m).

Abstract: The new type lead sealing of aluminum alloy designed and manufactured by an electric energy meter packaged on the spot, has the excellent characteristics of anti-counterfeiting,anti-pry, and good anti-electric larcenies.

Abstract: In this paper, The article applies the principle of the PLC programmable controller control, according to the process requirements of de-dusting program design the ladder diagram system of dust-free workshop control program, using the advantages of PLC control system full, which make the function more powerful and make the design andthe operating system more simple.

Abstract: With the rapid development of science and technology, people become more expected about the intelligent experience brought by science and technology development. To operate the machine through a remote-control unit is a gift to industry from science and technology, our life is being changed by science and technology, we hope not only rely on remote-control, but also perceive our movement and then compete corresponding task according to our willing. To make the intelligent machine more acceptable to human life, and to develop an intelligent dustbin which controlled by gestures will realize interactions between human and intelligent dustbin. This article introduced the hardware circuit design of the intelligent dustbin.

Abstract: In this paper, the complementary and selective characteristics of ECL (Emitter-Coupled Logic) circuit are fully taken advantage to implement various logic gates including MUX, XOR, AND, NAND, OR, and so on. From the analysis, we find that one ECL circuit can realize many relative logic functions, which is more flexible than CMOS logic. We conclude that if the characteristics of ECL circuit are fully taken advantages, the design of logic functions can be very easy.

Abstract: The practicability of applying FPGA to NAND Flash in two aspects: address management and bad block management, which is discussed and verified in this paper. Functions of these three aspects can be realized simultaneously, the reliability and running speed of NAND Flash will be greatly promoted.

Abstract: The work principle of TC787 are explained, including the function of each pin. The design idea about trigger circuit are given. And the structure and feature of main circuit is presented. Finally the experiment results are educed. A new design for three-phase full-controlled circuit system was introduced, which was based on TC787.This system, which was in application to TC787 instead of KJ/KC, was more reasonable and convenient, as well as more reliable and less cost in power. It had a wonderful application foreground in power electronics field.