外文翻譯---基于arm與線性ccd的高速數(shù)據(jù)采集系統(tǒng)-其他專業(yè)-全文預(yù)覽
【正文】 試。 1 引言 在電氣化鐵路，為了擴(kuò)大對電力機(jī)車受電弓的壽命，所以要使受電弓滑塊磨損均勻，接觸線的直線段（電氣化鐵路供電線）排列為曲折路線（彎段被安排成折線的形式）。為了提高通信速度，這里采用通用串行總線（ USB）技術(shù)來與 PC 進(jìn)行通信。 all cables adopt shielded cable with waveproof sleeve。 it’s the process of image identification, including background separation and feature extraction of the image data. Identification of the image is for image gray only。s nanosecond conversion device is adopted. It’s a singlechannel, 8bit A/D converter, which operates over a wide range of temperature, converts fast, operates at conversion rates up to 230 MSPS, thus achieving entire signal acquisition of linear array CCD. ADC08200 is shown in figure 3. 河北大學(xué) 工商學(xué)院 2021 屆 本科生畢業(yè)外文翻譯 4 Fig 3 Highspeed A/D converter ADC080200 FIFO is used as a data buffer to coordinate the rate of ARM processor and ADC. It is a twoport (input and output port) memory for temporary storage of first in first out data. Due to the time to write data to FIFO is far less than the A/D conversion time, therefore, the acquisition speed depends on the A/D conversion speed. In order to improve the speed of the entire measurement system, the time sequence of entire circuit is precisely controlled by the CPLD to make the circuit works harmonious. CCD driving signal, integration time control, address decoding, A/D conversion control, data buffer and data acquisition logic functions integrate in the CPLD, so that the entire circuit structure is simple and reliable. In order to further enhance the system speed, when the system starts, system programs are transferred to highspeed SRAM for running and SDRAM for data storage。 (2) using Atmel Company’s AT91RM9200 processor of ARM9 series to realize digital signal acquisition and processing。 本科生外文文獻(xiàn)翻譯 外文題目 ： High–Speed Data Acquisition System Based on ARM amp。 otherwise, in some cases (such as caught in a stiff winds), cause a large range of lateral movement of the roof (and the higher the speed, the greater pantograph swing around), some parts of contactline will be in excess of the effective work length of pantograph, so that the staggervalue of contactline beyond the standard range, leading to deterioration of the current collection, and even cause incorrect running of the pantograph accident. Pantographcatenary malfunction will result in interruption of train operation, which impact on rail transport seriously. In order to avoid these phenomena, the staggervalue and its changes should be tested , a lootive contactline monitoring system and its mating data acquisition system were developed, which calculate the instant staggervalue quickly. II. System Components System hardwar
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