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ARM induction current acquisition device

An acquisition device and induction current technology, which is applied in the field of electric power engineering, can solve problems such as small amplitude of abnormal coil induction current signal, no abnormal coil induction current, resolution and sampling rate that cannot meet the acquisition requirements, etc., achieving obvious suppression effect, The effect of fast attenuation and small signal amplitude

Inactive Publication Date: 2020-02-04
NORTHWEST A & F UNIV
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Problems solved by technology

[0002] The abnormal coil induced current has the characteristics of rapid attenuation and small signal amplitude. It needs to be collected by high-resolution and high-sampling rate instruments. At this stage, there is no special acquisition instrument for abnormal coil induced current, and most of them use general-purpose modules. Acquisition by modern acquisition equipment, its resolution and sampling rate cannot meet the acquisition requirements

Method used

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  • ARM induction current acquisition device

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Embodiment Construction

[0011] An ARM induced current acquisition device is mainly composed of an abnormal ring 1, a sampling resistor 2, a protection circuit 3, an AD driver 4, an ADC5, a digital isolator 6, an ARM controller 7, a GRS8 and a cache module 9, and is characterized in that : the abnormal ring 1 is connected to the sampling resistor 2, the sampling resistor 2 is connected to the protection circuit 3, the protection circuit 3 is connected to the AD driver 4, the AD driver 4 is connected to the ADC5, and the ADC5 is connected to the digital isolator 6, The digital isolator 6 is connected to the ARM controller 7 , and the GRS8 and the cache module 9 are both connected to the ARM controller 7 .

[0012] The above-mentioned abnormal loop current signal cannot be directly connected to the acquisition device, and needs to be converted into a voltage signal. Generally, a current sensor is used. However, due to the small amplitude of the current signal induced by the abnormal coil, the current sen...

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Abstract

The invention relates to an ARM induction current acquisition device and belongs to the technical field of electric power engineering. The ARM induction current acquisition device mainly comprises anabnormal ring, a sampling resistor, a protection circuit, an AD driver, an ADC, a digital isolator, an ARM controller, a GRS and a caching module and is characterized in that the abnormal ring is connected with the sampling resistor; the sampling resistor is connected with the protection circuit; the protection circuit is connected with the AD driver; the AD driver is connected with the ADC; the ADC is connected with the digital isolator; and the digital isolator is connected with the ARM controller. Induction current of an abnormal coil of the device has the characteristics of rapid attenuation, small signal amplitude and the like; indexes of the induction current acquisition device are proposed; an inhibiting effect on noise is obvious; and the ARM acquisition device has high accuracy and stability.

Description

technical field [0001] The invention relates to an ARM induction current acquisition device, which belongs to the technical field of electric power engineering. Background technique [0002] The abnormal coil induced current has the characteristics of rapid attenuation and small signal amplitude. It needs to be collected by high-resolution and high-sampling rate instruments. At this stage, there is no special acquisition instrument for abnormal coil induced current, and most of them use general-purpose modules. The resolution and sampling rate cannot meet the collection requirements. In view of the above problems, this paper designs and realizes the acquisition device for the abnormal coil induced current. The invention develops an ARM induction current acquisition device. Contents of the invention [0003] In view of the above disadvantages, the present invention provides an ARM induction current acquisition device. [0004] The present invention is realized through th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0092
Inventor 陈晓琪陈杰李文超
Owner NORTHWEST A & F UNIV
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