Digital power quality monitoring device

Abstract

The invention relates to a digitization power quality monitoring device. The device comprises a power supply module, a data collecting module, an operational amplifier, an Analog to Digital (A / D) shifting chip, a control chip and a monitor, wherein the output end of the data collecting module is connected to the operational amplifier, the operational amplifier is connected to the control chip through the A / D shifting chip, the control chip is connected to the monitor, the data collecting module collects external current and pressure data, the data are transmitted to the A / D shifting chip through the modulation of the operational amplifier, the A / D shifting chip transmits the data to digital signals and transmitted the digital signals to the control chip, the control chip calculates received data, power quality data are obtained, and when the monitor is required to display, the control chip transmits corresponding power quality data to the monitor for displaying. Compared with the prior art, the device has the advantages of being high in data monitoring accuracy, good in adapting ability, high in function, low in power consumption and convenient to install.

Description

technical field

[0001] The invention relates to a technology related to electric energy detection, in particular to a digital electric energy quality monitoring device. Background technique

[0002] Power Quality, strictly speaking, the main indicators to measure power quality are voltage, frequency and waveform. Generally speaking, it refers to high-quality power supply, including voltage quality, current quality, power supply quality and power quality. It can be defined as: the deviation of voltage, current or frequency that causes electrical equipment to fail or fail to work normally, including frequency deviation, voltage deviation, voltage fluctuation and flicker, three-phase unbalance, temporary or transient overvoltage, Waveform distortion (harmonics), voltage sags, interruptions, swells, and power supply continuity, etc.

[0003] With the development of the national economy and the improvement of people's lives, the requirements for power quality are constantly inc...

Examples

Embodiment

[0033] like figure 1 , figure 2 As shown, a digital power quality monitoring device includes a power supply module, a data acquisition module 3, an operational amplifier 4, an A / D conversion chip 5, a control chip 6 and a display screen 7; the output terminal of the data acquisition module 3 is connected to the Operational amplifier 4 is connected, and described operational amplifier 4 is connected with control chip 6 through A / D conversion chip 5, and described control chip 6 is connected with display screen 7;

[0034] The data acquisition module 2 collects external current and voltage data, and transmits to the A / D conversion chip 5 after the signal conditioning of the operational amplifier 4, and the A / D conversion chip 5 converts it into a digital signal and transmits it to the control chip 6, The control chip 6 continues to calculate the received data to obtain power quality data. When the display screen 7 needs to display, the control chip 6 sends the corresponding po...

technical field

[0001] The invention relates to a technology related to electric energy detection, in particular to a digital electric energy quality monitoring device. Background technique

[0002] Power Quality, strictly speaking, the main indicators to measure power quality are voltage, frequency and waveform. Generally speaking, it refers to high-quality power supply, including voltage quality, current quality, power supply quality and power quality. It can be defined as: the deviation of voltage, current or frequency that causes electrical equipment to fail or fail to work normally, including frequency deviation, voltage deviation, voltage fluctuation and flicker, three-phase unbalance, temporary or transient overvoltage, Waveform distortion (harmonics), voltage sags, interruptions, swells, and power supply continuity, etc.

[0003] With the development of the national economy and the improvement of people's lives, the requirements for power quality are constantly inc...

Examples

Embodiment

[0033] like figure 1 , figure 2 As shown, a digital power quality monitoring device includes a power supply module, a data acquisition module 3, an operational amplifier 4, an A / D conversion chip 5, a control chip 6 and a display screen 7; the output terminal of the data acquisition module 3 is connected to the Operational amplifier 4 is connected, and described operational amplifier 4 is connected with control chip 6 through A / D conversion chip 5, and described control chip 6 is connected with display screen 7;

[0034] The data acquisition module 2 collects external current and voltage data, and transmits to the A / D conversion chip 5 after the signal conditioning of the operational amplifier 4, and the A / D conversion chip 5 converts it into a digital signal and transmits it to the control chip 6, The control chip 6 continues to calculate the received data to obtain power quality data. When the display screen 7 needs to display, the control chip 6 sends the corresponding po...

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