Moncler online Ultrasonic test data collection and

Ultrasonic test data collection and transmission of high technology research

The data read by the PCI interface module can be converted to the corresponding PCI bus signals received by the system. 4.2.3FIFO interface module FIFO interface module function is to control the read data from the FIFO, and then through the PC! Issued to the bus interface module application permission to the system memory after the data reception areas designated to transmit data. FIFO interface module also implements the programmable control register, software control of data transmission. 4.3 software interface to the interface card's software interface consists of two parts, namely, the software associated with PCi system interfaces and related software applications with the user interface. System-related software with PCI interface is PCI bus configuration registers, including the interface card manufacturers mark the specified device number, revision number, and company logo PCISIG number assigned register, and status register, command register, and the base address register, etc. . Related software applications with the user interface is implemented with the interface card associated with a specific function registers, including two sets of data transmission on the starting and ending address register address register, and command and status registers. Associated with the user application on the register if 8-bit or 16-bit mode operations, it will produce unpredictable results,[link widoczny dla zalogowanych], so all the way to 32. In memory in bytes (8 bits) units addressing the situation, during the 16-bit or 32-bit operation that the byte order of the larger High byte of the address byte, the low byte byte of the address on the smaller. In all registers, some registers are read-only, some registers are readable and writable, and some registers are readable and clear. These attributes in the following description of each register will be read, respectively, read / write and read / clear the word identity. For read-only and read / write property will not go into. For 398 * Read / clear attribute this should be stated that, when the read operation, read operation is no different with the general, when the write operation, write a 1 bit will be cleared to 0,[link widoczny dla zalogowanych], write 0 bits are not affected. For example, when a has a read / clear attribute byte is 01010101, the reading of the contents of the byte 01010101, 00001111 write the byte, the lower 4 bits of sub-section 0 to be confusion as 01,010,[link widoczny dla zalogowanych],000. Achillea; blind (1) from the commissioning and development results, the ultrasonic signal acquisition, analysis and image processing system's overall design is correct, the entire system to meet the frequency 1 ~ 40MHz collection and analysis of ultrasonic testing needs and can be adjusted sampling rate to meet the requirements of the different frequency of testing records. (2) all-digital display and handling of ultrasonic signals for the analysis of ultrasonic testing to provide the necessary data so that test results are more accurate and intuitive, able to accurately locate and quantify the defect. k ~ O,) by the PCI technology to solve real-time large-capacity on-site detection of high-speed data storage and transmission, the development of the project for other options provided. (... Lt / application HA and PLD key hardware for scientific research and development and comparative testing, has some privacy, intellectual property protection provided for the program, and the much smaller hardware size guidelines. (5) estimation method used signal processing, echo information extracted from the noise and reduce the hardware development effort. References: E1] American Society for Nondestructive Testing Programme. \. Shanghai: World Publishing Company, 1996. [2] National Element loss of boiler and pressure vessel testing Qualification Examination Committees. ultrasonic EM]. Beijing: Labor and Personnel Press, 1995. [3] Su Tao, et al. High performance digital signal processing and high-speed real time signal processing [M]. Xi'an: Publishing House of Science and Technology Western Electric, 2000.E43 Shanley, Anderson, Liu Hui, et al. PCI system architecture [M]. Beijing: Electronic Industry Press, 2000 . E53 Liu Shan,[link widoczny dla zalogowanych], et al. PcI local bus Developer Guide []. Xi'an: Publishing House of Science and Technology Western Electric, ~. a'-JkIk1. E63 Lida You, et al. micro-computer interface technology EM]. Beijing: Tsinghua University Press, 2000.ET] When Shao, et al. microcomputer interface technology EM]. Beijing: Tsinghua University Press, 2000. [8] Huang Zhengjin, et al. In System Programming technology and its applications [M]. Nanjing: Southeast University Press,[link widoczny dla zalogowanych], 1999 . Fol Jiang Xuan, et al. Digital System Design and 1. 21T] uf ~ Application Technology [M]. Beijing: Electronic Industry Press, 2001.

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