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Large-dynamic-range signal acquisition device

A large dynamic range, signal acquisition technology, applied in the direction of analog-to-digital converters, electrical components, code conversion, etc., can solve the problems of reducing the scale of the acquisition system and the number of ADCs, the inability of ADCs to take into account sampling rate and resolution, and parallel acquisition. , to achieve the effect of reducing the scale of the acquisition system and the number of ADCs, improving the dynamic range and sampling real-time performance

Pending Publication Date: 2018-06-01
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing ADC cannot take into account the sampling rate, resolution and parallel acquisition, innovate from the system level, and propose a large dynamic range signal acquisition device, while taking into account the sampling rate and dynamic range of the system. Greatly reduce the scale of the acquisition system and the number of ADCs

Method used

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0018] figure 1 It is a principle block diagram of a specific embodiment of the large dynamic range signal acquisition device of the present invention.

[0019] In this embodiment, as shown in the figure, the large dynamic range signal acquisition device of the present invention includes a power dividing circuit 1 , three acquisition channels 2 and a data reconstruction module 3 . Wherein, the acquisition channel 2 further includes a signal conditioning circuit 201 , a limiter circuit 202 and an ADC 203 .

[0020] The input signal to be collected is divided into the same ...

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Abstract

The invention discloses a large-dynamic-range signal acquisition device. On the condition of limited high-speed ADC dynamic range, different-gain amplification is performed on the same signal througha plurality of channels, and furthermore a plurality of ADCs perform simultaneous sampling on the signal. Then in multiple paths of sampling data, data frames which have no distortion and highest amplification power are selected frame by frame for realizing restoration and splicing (reconstruction) for improving the dynamic range and sampling real-time property in signal acquisition, thereby realizing acquisition of the high-speed large-dynamic signal. Therefore the large-dynamic-range signal acquisition device has advantages of realizing consideration for system sampling rage and the dynamicrange, and greatly reducing acquisition system scale and the number of ADCs.

Description

technical field [0001] The invention belongs to the technical field of signal acquisition, and more specifically relates to a large dynamic range signal acquisition device. Background technique [0002] In recent years, in a wide range of technical fields, modern electronic signals have shown the characteristics of complexity and diversity, especially the frequency range of the signal has been continuously expanded, the instantaneousness and complexity of the signal have been continuously increased, and the non-stationary characteristics have grown rapidly. Many electronic signals with large dynamic range, high bandwidth and rich waveform characteristics are often tested in scientific research and major projects. Precise measurement and analysis of transient signals; another example, in radar and other electronic systems, occasional interference is often the deep-seated cause of failure and failure. [0003] Real-time large dynamic range capture is the prerequisite for obta...

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Application Information

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IPC IPC(8): H03M1/12
CPCH03M1/1245
Inventor 曾浩邱渡裕谭峰郭连平曹思浩高舰苏艺飞
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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