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Analog-information sampling method in cloud manufacturing platform

A technology of information sampling and cloud manufacturing, applied in electrical components, code conversion, etc., can solve the problem of increasing requirements for sampling rate and processing speed

Inactive Publication Date: 2013-02-13
SHANGHAI JIAO TONG UNIV
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  • Claims
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Problems solved by technology

The huge demand for information on the cloud manufacturing platform will lead to wider and wider signal bandwidth, making the requirements for sampling rate and processing speed higher and higher in information acquisition, causing huge pressure on signal sampling, transmission, storage and processing

Method used

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  • Analog-information sampling method in cloud manufacturing platform
  • Analog-information sampling method in cloud manufacturing platform
  • Analog-information sampling method in cloud manufacturing platform

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Embodiment Construction

[0040] The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0041] The "analog-information" (A-to-I) sampling system involved in the present invention performs A-to-I sampling by exploiting the sparse characteristic of the signal itself. The system mainly consists of three parts: modulation and demodulation unit, filtering unit and sampling unit. as figure 1 As shown, the analog signal x(t) to be sampled first passes through a pseudo-random PN sequence p c(t) ∈ {-1, +1} for modulation, where the numerical transformation frequency of the PN sequence must be greater than or equal to the Nyquist sampling frequency of the input signal. The purpose of demodulation is mainly to disperse the frequency components of the signal, so as not to be destroyed when it enters the analog low-pass filter w...

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Abstract

The invention relates to an analog-information sampling method in a cloud manufacturing platform. The analog-information sampling method comprises a signal compression and sampling part and a signal reconstruction part. In the analog-information sampling method in the cloud manufacturing platform, the current most advanced compressive sensing technology is used in the development of the cloud manufacturing platform for the first time, the analog signals to be collected and processed by the cloud manufacturing platform are directly sampled through analog-information, and corresponding hardware implementations are given for each part of the sampling system on the basis of analyzing the sampling principle. The analog-information sampling method has the advantages of breaking the bonds of the traditional Nyquist information processing frame to the construction of the cloud manufacturing platform and increasing the capacity of the cloud manufacturing platform to collect, transfer, compress, store and process a huge amount of analog signals.

Description

technical field [0001] The invention belongs to the technical field of distributed manufacturing information processing and integration, and in particular relates to a simulation-to-information sampling method in a cloud manufacturing platform, which can reduce the cost of signal collection, transmission, and storage on the cloud manufacturing platform, and improve information extraction on the cloud platform and processing capabilities, this method is mainly used in the design of analog signal acquisition and processing modules of the cloud manufacturing platform. Background technique [0002] With the introduction and development of the concept of cloud computing, and the continuous development and progress of the level of manufacturing information, a new manufacturing service model - cloud manufacturing, came into being. Cloud manufacturing is a new concept developed on the basis of the concept of "manufacturing as a service" and drawing on the idea of ​​cloud computing. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30
Inventor 李楠杨煜普
Owner SHANGHAI JIAO TONG UNIV
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