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Waveform reproduction technology based on massive data

A massive data and waveform technology, applied in electrical digital data processing, instruments, etc., can solve the problems of inability to read binary files, low playback rate, limited data capacity, etc., to achieve the effect of simple structure, improved equipment quality, and shortened cycle.

Inactive Publication Date: 2015-04-29
750 TEST SITE OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Current devices such as programmable signal sources can record data and convert files into analog signal output, but the data capacity is very limited; although oscilloscopes can store and play back files in video mode, they have no D / A output; Medium-reading playback, but the playback rate is low, it can only be converted into a video signal or a narrow-band audio signal, and the file is in a compressed format, which cannot read standard binary files

Method used

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  • Waveform reproduction technology based on massive data
  • Waveform reproduction technology based on massive data

Examples

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Embodiment Construction

[0024] Such as figure 1 As shown, the integrated control circuit includes multiple control modules. The PCI bus control module realizes the PCI bus communication protocol control; the DMA control module writes data directly into the dual-port RAM from the PCI bus, and the processor can perform routine processing tasks at the same time as the data is transmitted. The data transmission efficiency is very high, and the data playback rate is only limited by the Disk access speed limitation; clock and sampling rate control module generates system clock and realizes programmable sampling rate clock control; D / A control module inputs dual-port RAM data to D / A data bus at a certain frequency and can control D / A The start and stop of A; the gain control module controls the strength of the D / A output signal.

[0025] The inventive circuit comprises a plurality of control modules, including a PCI bus control module, a DMA control module, a CLK clock generator, a gain control module, a D...

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PUM

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Abstract

The invention relates to a waveform reproduction technology based on massive data. A DMA (Direct Memory Access) control module is used for importing massive data on a hard disk of which the memory space can be extended freely into a circuit board dual-port RAM (Random Access Memory) from a PCI (Peripheral Component Interconnect) bus in a ping-pong buffering way; during data transmission, a processor can execute conventional processing tasks; a CLK generator is used for generating programmable sampling rate clock control to realize variable-sampling-rate waveform output; a D / A (Digital-to-Analog) control module is used for inputting dual-port RAM data onto a D / A data bus at a certain frequency according to an output clock frequency, and can be used for controlling the start and stop of the D / A; a gain control module is used for controlling the intensity of a D / A output signal in order to provide a high-fidelity analog signal with environmental characteristics. By adopting the waveform reproduction technology, speed change of the massive data and high-sampling-rate waveform reproduction are realized.

Description

technical field [0001] The invention relates to the field of electronic digital signal processing, and is especially suitable for measuring underwater acoustic signals. Background technique [0002] In the process of scientific research, production and testing, some equipment needs to obtain some test process data, but these data are generated under specific conditions and contain certain environmental characteristics, which are different from the analog signals generated by standard instruments in the pure laboratory. , For example, the underwater acoustic signal recorded by an underwater acoustic measurement system contains water surface reverberation, multi-channel reflection and interference signals from other equipment, and the electromagnetic signal after an underwater vehicle encounters a hull during navigation and changes the magnetic field. These test data including environmental characteristics can provide new equipment with input signals that are closer to the rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/28
CPCG06F13/282
Inventor 张玲刘曲姜立志朱强陈建青
Owner 750 TEST SITE OF CHINA SHIPBUILDING IND CORP
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