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High-precision circuit acquisition device

An acquisition device and high-precision technology, which is applied in the direction of measuring devices, measuring electrical variables, and measuring electrical power through the application of digital technology, can solve the problem of low accuracy of electrical signal acquisition

Active Publication Date: 2016-01-27
BOER YIXING POWER SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a high-precision circuit acquisition device for the problem of low precision in the current electrical signal acquisition

Method used

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] like figure 1 As shown, the external input power passes through the voltage transformer, then through the voltage division acquisition circuit, and then through the π-type filter circuit to the ADE7878 chip for data analysis and calculation. After the external input power passes through the current transformer and then through the current conversion voltage circuit, the data is analyzed and calculated by the π-type filter circuit to the ADE7878 chip to realize the collection of voltage and current.

[0015] exist figure 2 Among them, the present invention uses the external input power supply to pass through the voltage transformed by the voltage transformer, and the input voltage channel has three single-voltage input channels, which are VA, VA, and VC successively.

[0016] The present invention adopts the ADE7878 high-precision three-phase m...

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Abstract

A high-precision circuit collection device comprises a voltage transformer, a current transformer, a partial voltage collection circuit, a voltage switching circuit, two pi-type filter circuits, a metering chip, a microprocessor, a key and a display circuit. The voltage transformer and the current transformer serve as signal collection terminals and are connected with an external input power source. The signal output ends of the voltage transformer and the current transformer are connected with the signal input ends of the partial voltage collection circuit and the voltage switching circuit respectively. The signal output ends of the partial voltage collection circuit and the voltage switching circuit are connected with the signal input ends of the pi-type filter circuits respectively. The signal output ends of the two pi-type filter circuits are respectively connected with the signal input end of the metering chip. The signal output end of the metering chip is connected with one signal input end of the microprocessor. The other signal input end of the microprocessor is connected with the signal output end of the key. The signal output end of the microprocessor is connected with the display circuit. The high-precision circuit collection device is simple in structure and high in signal collection precision.

Description

technical field [0001] The invention relates to the field of electric energy measurement, in particular to a high-precision circuit acquisition device, which can realize circuit control and processing and improve the reliability of electric meters. Background technique [0002] At present, with the continuous advancement of power transmission and distribution technology, smart power equipment has made great progress. The adoption of some intelligent control equipment and smart power meters will play a role in promoting the realization of smart grids. The circuit of the power distribution device is collected, and various signals are displayed on the display screen through calculation and detection, and remote control and telemetry can also be realized through remote communication through the remote interface. At present, most of the technologies used in circuit detection cannot meet the requirements of high-end equipment in terms of accuracy, and errors are prone to occur. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R22/10G01R21/133G01R19/25
Inventor 李思伟
Owner BOER YIXING POWER SYST
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