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Detection circuit and multi-branch recognition device

A detection circuit and identification device technology, applied in the direction of using digital measurement technology for measurement, etc., can solve problems such as low sensitivity

Pending Publication Date: 2019-08-02
SHENZHEN POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a detection circuit and a multi-branch identification device for the low sensitivity of the traditional detection circuit in the identification of station-household and branch-household information.

Method used

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  • Detection circuit and multi-branch recognition device
  • Detection circuit and multi-branch recognition device

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0027] In the description of the present application, it should be understood that the terms "central", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner" and "outer" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operat...

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Abstract

The invention relates to a detection circuit and a multi-branch recognition device. The detection circuit is used for detecting and receiving or transmitting a pulse current signal, and comprises a current-voltage conversion circuit, a primary amplification circuit, a bias circuit and a secondary amplification circuit, wherein the current-voltage conversion circuit comprises a current transformerand a first operational amplifier; the current transformer is used for reducing a first current signal input by the primary side of the current transformer; the first operational amplifier is used forconverting a second current signal output by the secondary side of the current transformer into a first voltage signal; the primary amplification circuit is used for amplifying the first voltage signal into a second voltage signal and outputting the second voltage signal; the bias circuit is used for providing a bias voltage signal; and the secondary amplification circuit is used for amplifying the sum of the second voltage signal and the bias voltage signal into a third voltage signal. Compared with a detection circuit in a traditional identification device, the detection circuit disclosed by the invention is higher in sensitivity and solves the problem of information crosstalk during recognition.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a detection circuit and a multi-branch identification device. Background technique [0002] How to meet the people's power demand for a better life, promote the lean management of the low-voltage distribution network, and get through the last mile of contact with customers is particularly important. For a long time, the accuracy of distribution network low-voltage basic data has been the main problem in promoting lean management of distribution network. The accuracy of data associations such as low-voltage topology, equipment specifications, low-voltage meters, and customer information is very low. It is imperative to sort out low-voltage households and customer information. . However, the power supply relationship in the low-voltage station area is complicated, the power supply lines are crossed, and the cables are laid underground. Information crosstalk is prone to occur ...

Claims

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Application Information

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IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 刘丽珠
Owner SHENZHEN POWER SUPPLY BUREAU
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