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Precision sampling device

A sampling device, precise technology, applied in the field of circuits, can solve problems such as low precision

Inactive Publication Date: 2017-07-14
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The precision of sampling in the prior art is not high

Method used

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Experimental program
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Embodiment

[0037] see image 3, the original sampling signal is sent to the 5-way ADC sampling chip in the AD sampling group for sampling at the same time, and the phase difference of the 5-way adjacent ADCs sent by the clock signal generator is 36 degrees (0 degrees, 36 degrees, 72 degrees, 108 degrees, 144 degrees) when the sampling clock is enabled, 5 data streams are generated and sent to the buffer bank. The buffer group is composed of 5-way first-in-first-out memory (FIFO), which is triggered by the 5-way adjacent phase difference of 36 degrees (180 degrees, 216 degrees, 252 degrees, 288 degrees, 324 degrees) sent by the clock generator. Next, buffer the ADC sampling data stream. At the same time, after the data signal processing unit accesses the FIFO full interrupt, it enables the reading of the cached data in the FIFO, and composes a complete sampling process according to the order of sampling time.

[0038] Multiple groups of signal processing modules conduct phase analysis o...

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Abstract

The invention discloses a precision sampling device which comprises an AD sampling group, a buffer group, groups of signal processing modules and a clock generator. The AD sampling group comprises a number of ADC sampling chips. The buffer group is connected with the AD sampling group. The clock generator is connected with the AD sampling group and the buffer group. An ADC chip enable signal transmitted to the AD sampling group and a storage enable signal transmitted to the buffer are comprised. Groups of signal processing modules are respectively connected with the buffer group and the clock generator, and are used for acquiring the sampling data of the buffer group, receiving a number of adjacent phase group signals transmitted by the clock generator, carrying out phase analysis to acquire a phase difference correction signal and transmitting the signal to the clock generator. Groups of signal processing modules access the buffer group to acquire complete sampling data and output the data.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a precision sampling device. Background technique [0002] With the continuous improvement of science and technology, people have higher and higher requirements for sampling data. The precision of sampling in the prior art is not high. Contents of the invention [0003] The invention provides a precision sampling device, which solves the above-mentioned technical problems and achieves the technical effect of high sampling precision of the provided sampling device. [0004] The present invention provides a precision sampling device, which includes an AD sampling group, a buffer group, multiple sets of signal processing modules, and a clock generator; the AD sampling group includes a plurality of ADC sampling chips for adjusting the input frequency The signal is sampled; the buffer group is connected with the AD sampling group for storing the sampling data of the AD sampling g...

Claims

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Application Information

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IPC IPC(8): G01R23/02
CPCG01R23/02
Inventor 漆为民
Owner JIANGHAN UNIVERSITY