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Data synchronous identification device of multiple analog-to-digital converter (ADC) high-speed data acquisition system

A high-speed data acquisition and data synchronization technology, applied in the direction of analog/digital conversion calibration/testing, to achieve the effect of ensuring stable operation

Active Publication Date: 2012-06-13
成都菁汇科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0013] The purpose of the present invention is to overcome the deficiency that the prior art cannot identify the sequential relationship between sampling data in real time, and provide a multi-ADC high-speed data acquisition system with data synchronization identification function

Method used

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  • Data synchronous identification device of multiple analog-to-digital converter (ADC) high-speed data acquisition system
  • Data synchronous identification device of multiple analog-to-digital converter (ADC) high-speed data acquisition system
  • Data synchronous identification device of multiple analog-to-digital converter (ADC) high-speed data acquisition system

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Embodiment

[0034] image 3 It is a principle block diagram of a specific embodiment of a multi-ADC high-speed data acquisition system with data synchronization identification function in the present invention.

[0035] In this example, if image 3 As shown, the present invention overcomes the shortcoming of being unable to identify the sequence relationship between sampling data in real time in the past system that relies on delay adjustment, and adds a test pulse forming module, a high-precision time interval measurement unit, and a data feedback control module on top of the existing scheme And the data sequence identification module, which forms the phase relationship of the data synchronization clocks of each ADC into a test pulse for time interval measurement, and finally uses the measurement results to control the identification of the data sequence. Wherein, the high-precision time interval measurement unit adopts a TDC (Time-to-Digital Converter, Time-to-Digital Converter) measur...

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Abstract

The invention discloses a multi-analog-to-digital converter (ADC) high-speed time alternating acquisition system with a data synchronous identification function. Phase relation between multiple ADC data synchronous clocks is measured by adding a test pulse forming module, a high-precision time interval measuring unit, a data feedback control module and a data sequence identification module, and the sequence of sampled data is fed back and controlled according to a measuring result, so real-time correct splicing of parallel time alternating sampling data sequences is realized, reliable guarantee is provided to the processing of sampled data at the rear end, the stable operation of the system is effectively ensured, and the technology lays a firm foundation for construction of a multi-ADC acquisition system with higher sampling rate.

Description

technical field [0001] The invention belongs to the field of high-speed data acquisition, and more specifically relates to a data synchronization identification device of a multi-ADC high-speed time-alternative acquisition system. Background technique [0002] Data acquisition systems have been widely used in various fields such as electronic measurement, communication, radar, aerospace, industry, etc. With the development of new chip technology, the sampling rate of its core analog-to-digital converter (ADC) has been greatly improved , and the sampling rate of the single-core ADC has reached GSPS, which provides a basic guarantee for the construction of a data acquisition system with a high sampling rate. [0003] With the continuous development of technology and engineering applications, the complexity of modern signal systems is increasing, and the requirements for the sampling rate of the acquisition system are getting higher and higher. However, under the conditions of...

Claims

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Application Information

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IPC IPC(8): H03M1/10
Inventor 黄武煌叶芃田书林
Owner 成都菁汇科技有限公司
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