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An analog-to-digital conversion circuit for a portable electric energy monitoring device

An analog-to-digital conversion circuit and power monitoring technology, which is applied in the direction of analog-to-digital converters, can solve the problems of poor measurement accuracy and small number of measurement channels, and achieve the effects of low cost, high throughput rate, and improved applicability

Active Publication Date: 2016-01-20
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing electric energy detection device includes a conversion circuit, but the number of measurement channels is small and the measurement accuracy is poor.

Method used

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  • An analog-to-digital conversion circuit for a portable electric energy monitoring device
  • An analog-to-digital conversion circuit for a portable electric energy monitoring device
  • An analog-to-digital conversion circuit for a portable electric energy monitoring device

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] figure 1 It is a block diagram of the multi-channel high-precision analog-to-digital conversion circuit of the portable electric energy monitoring device provided in this embodiment.

[0037] The circuit of this embodiment is mainly composed of 8 ADC chips, an FPGA chip and a clock driver chip.

[0038] The FPGA processing module is respectively connected with the clock driving circuit and the 8 converter modules, and the clock driving circuit is connected with the 8 converter modules.

[0039] Among them, 8 ADC chips are used for high-speed acquisition of 48 channels of analog signals, the clock driver chip is used as the sampling clock of the ADC chip, and the FPGA chip is used as the core data processing chip of the circuit to calculate and process the data output by the analog-to-digital converter.

[0040] ...

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Abstract

The invention discloses an analogue-to-digital conversion circuit for a portable electric energy monitoring device. The analogue-to-digital conversion circuit comprises a field programmable gate array (FPGA) processing module, a clock driving circuit and eight converter modules. The FPGA processing module is connected with the clock driving circuit and the eight converter modules. The clock driving circuit is connected with the eight converter modules. The analogue-to-digital conversion circuit provided by the invention has a simple structure, is low cost and increases running speed. Six-channel integrated analogue-to-digital converter (ADC) chips are adopted, and 48 analogue-to-digital conversion channels are integrated in an acquisition board, so conversion accuracy is improved and the applicability of the device on the spot is also improved. The analogue-to-digital conversion circuit also has a high-efficiency core processing scheme by which real-time sampling control and data processing can be performed on the 48 analogue-to-digital conversion channels.

Description

Technical field: [0001] The invention relates to the field of power system monitoring, in particular to an analog-to-digital conversion circuit for a portable power monitoring device. Background technique: [0002] The power quality and the safe and stable operation of the power grid are the key issues that need to be solved in the smart grid. At present, the monitoring of power quality is mainly realized through a harmonic monitor, and the monitoring of a power grid is mainly realized through an RTU, a fault recorder, and a synchrophasor measurement unit (Phasor Measurement Unit, PMU for short). However, these devices need to be grouped and fixedly installed in power plants or substations. The installation configuration is more complicated and the price is more expensive. The different concerns of various devices lead to repeated installation of multiple devices. When the power grid operation department needs to know the information of some uninstalled power stations or ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/12
Inventor 吕大伟牛永会许勇丛镝
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD
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