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Multi-channel and high capacity parallel data acquisition device

A data acquisition, multi-channel technology, applied in electrical digital data processing, instruments, etc., can solve the problems of increasing control logic complexity, signal distortion, isolation cost and channel delay increase, etc., to facilitate upgrade and expansion, and reduce isolation. The effect of low cost and resource occupation

Inactive Publication Date: 2013-05-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problems that the input high-bandwidth signal isolation in the traditional multi-channel data acquisition device will cause signal distortion; the increase in the number of input signal channels will increase the isolation cost and channel delay, and increase the complexity of the control logic. multi-channel parallel data acquisition device

Method used

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  • Multi-channel and high capacity parallel data acquisition device
  • Multi-channel and high capacity parallel data acquisition device
  • Multi-channel and high capacity parallel data acquisition device

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 2 Describe this embodiment, this embodiment comprises control module 1, storage module 2 and interface circuit 7; The input end is connected with the data input and output end of memory module 2, and the first control signal output end of control module 1 is connected with the control signal input end of memory module 2; It also includes data sampling unit 3; Data sampling unit 3 is composed of digital isolation module 4 and m analog-to-digital conversion components 5; m is a natural number greater than or equal to 2; the second control signal output terminal to the fourth control signal output terminal of the control module 1 are respectively connected to the first control signal input terminal to the digital isolation module 4 The third control signal input end is connected, and the first control signal output end to the third control signal output end of the digital isolation module 4 are respectively connected with t...

specific Embodiment approach 2

[0009] Specific implementation mode two: combination image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that it also increases n data sampling units 3, n is a natural number greater than or equal to 1; n data sampling units 3 are connected in parallel with the control module 1, each The connection modes between the data sampling unit 3 and the control module 1 are the same. Other compositions and connection methods are the same as those in Embodiment 1. The purpose of setting n data sampling units 3 is to perform sampling in groups when the system sampling rate is insufficient or the sampling rate is different, so as to improve the system sampling rate or realize a multi-channel multi-sampling rate data acquisition system.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 2 , image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment 1 or 2 is that it also adds a power isolation module 6, the power supply signal input terminal of the power isolation module 6 is connected to the power supply, and the power supply signal output terminal of the power isolation module 6 It is connected with the power supply signal input end of the control module 1 . Other compositions and connection modes are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a multi-channel and high capacity parallel data acquisition device, belonging to data acquisition devices. The invention solves the problems of signal distortion due to the isolation of an input high bandwidth signal, increased isolation cost and channel delay caused by the increasing number of input signal channels and complexity of increasing control logics existing in the traditional multi-channel data acquisition device. A second control signal output end to a fourth control signal output end of a control module 1 are respectively connected with a first control signal input end to a third control signal input end of a digital isolation module, a first control signal output end to a third control signal output end of the digital isolation module are respectively connected with the first control signal input end to the third control signal input end of each analog-digital conversion component through a control bus, and the analog-digital conversion components are connected to the control bus in parallel. In the invention, parallel acquisition of any channel signal can be realized; a system sampling rate can be dynamically configured; any input signal is not influenced; and the system has simple logic control, and the device can be widely applied to various occasions requiring higher signal amplitude value precision and sampling speed.

Description

technical field [0001] The invention relates to a data acquisition device, in particular to a multi-channel parallel data acquisition device. Background technique [0002] Data and signal acquisition is the most basic function of the test system. Data or signal parallel acquisition, that is, all input data and signals are sampled at the same time. Parallel acquisition can fully preserve the phase relationship between input signals under the condition of ensuring the accuracy of signal amplitude. [0003] For multi-channel data acquisition, in order to prevent the impact on the subsequent system, the input signal needs to be isolated. According to the type of input signal and acquisition requirements, different isolation schemes need to be selected. For example, when the input signal is at TTL level and the specific amplitude of the signal is not very concerned, you only need to care about the signal level. The input terminal is digitally isolated; when the input signal is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40
Inventor 彭宇刘旺刘兆庆王启张京超彭喜元
Owner HARBIN INST OF TECH
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