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A kind of AD collection method and device

An acquisition method and technology of an amplifying device, which are applied in the field of AD acquisition, can solve the problems of incorrect execution of actuators, incorrect acquisition, and low acquisition accuracy of AD acquisition signals, and achieve the effects of improving precision and accuracy and reducing the probability of incorrect execution.

Active Publication Date: 2017-11-14
ZHUZHOU SOUTHERN GENERAL ELECTRIC CO LTD
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Problems solved by technology

[0004] The invention provides an AD acquisition method and device to solve the technical problem that the acquisition accuracy of the AD acquisition signal is not high or the wrong acquisition leads to the wrong execution of the actuator during the analog signal acquisition process

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  • A kind of AD collection method and device
  • A kind of AD collection method and device
  • A kind of AD collection method and device

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[0056] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0057] refer to figure 1 , an optional embodiment of the present invention provides an AD acquisition method, comprising:

[0058] Step S101, for a certain range [U i0 , U iN ] The source signal U i Simultaneously carry out N kinds of amplification processing to obtain N output signals [U 1 ,...,U k ,...,U N ], where N>0, 1≤K≤N.

[0059] Among them, the N types of amplification processes respectively set their corresponding effective input intervals [U i0 ,U i1 ],[U i1 ,U i2 ],·····,[U i(N-1) ,U iN ] and the effective output interval, the effective input interval of each kind of amplification processing corresponds to the effective output interval of this kind of amplification processing one by one, and the N effective input intervals co...

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Abstract

The invention discloses an AD acquisition method and device. Source signals within certain range are subjected to various amplification processes to obtain a plurality of output signals, and effective values are identified according to values of the output signals through various amplification processes in the effective output section respectively. By the aid of the method and the device, the technical problem of mistaken actuator execution caused by low acquisition accuracy or mistaken acquisition during AD signal acquisition is solved, the accuracy and the precision of signal acquisition are improved, and the mistaken execution probability of the actuator is reduced.

Description

technical field [0001] The invention relates to the field of AD acquisition, in particular to an AD acquisition method and device of an electric actuator. Background technique [0002] In the current intelligent electric actuator, the remote control mode is divided into remote switch control mode, remote analog control mode and bus control mode. The remote analog control mode is that the input control signal is a 4-20mA analog signal. The analog signal control mode is relatively common in DCS (Distributed Control System: Distributed Control System) system, and is widely used in the current industrial field environment. [0003] At present, the acquisition method commonly used by most actuator manufacturers in China is to linearly amplify the input 4-20mA analog signal, and then use a single-chip microcomputer for AD acquisition. In this way, although the acquisition of 4 ~ 20mA current signal can be realized, because the current signal often has loss or fluctuation when it...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25232H03M1/0656H03M1/12
Inventor 唐靖程肖长松
Owner ZHUZHOU SOUTHERN GENERAL ELECTRIC CO LTD
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