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Signal generator for continuous long wave recording playback power source and signal generation method

A signal generator, recording and playback technology, applied in the direction of digital function generator, signal transmission system, electrical signal transmission system, etc. Variation, inability to connect directly in series, etc., to achieve the effect of convenient expansion, improved linearity, and improved signal resolution

Pending Publication Date: 2022-05-24
国网山东省电力公司营销服务中心(计量中心)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a DAC needs to be added, and its volume and cost are increased. Dual DA uses two DAs in series to achieve DA expansion.
When DA is connected in series, it needs to go through the op amp follower first, and cannot be directly connected in series
[0007] Therefore, the non-linearity of the two DAs and the non-linearity of the operational amplifier will be superimposed, resulting in the deterioration of the linearity of the signal generator. At the same time, only periodic signals can be generated, and long-term, non-periodic continuous recording signals cannot be generated.

Method used

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  • Signal generator for continuous long wave recording playback power source and signal generation method
  • Signal generator for continuous long wave recording playback power source and signal generation method
  • Signal generator for continuous long wave recording playback power source and signal generation method

Examples

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Effect test

Embodiment 1

[0050] The present embodiment discloses a continuous long recorded wave playback power source signal generator, see attached Figure 1 As shown, the signal generator is composed of a DSP controller, a segmented DAC0, a segmented DAC1, an op amp follower 0, an op amp follower 1, a voltage signal terminal, and a current signal terminal.

[0051] Recording data through the Ethernet port connected to the DSP controller, recording data is generally stored in the external PC computer, recording data is generally in the comedade format, after parsing the recording data through the Ethernet port high-speed transmission to the DSP controller, after processing by the DSP controller, control the DAC output.

[0052]The DSP controller is connected through the SPI_0 and segmented DAC0, the recorded data is processed by the DSP controller, and the DAC0 output is controlled through the SPI_0 of the DMA channel to complete the signal generation of the recording playback waveform; the DSP controlle...

Embodiment 2

[0072] The object of the present embodiment is to provide a continuous long recorded wave playback power source with a signal generation method, see attached Figure 3 As shown, the implementation method of continuous long-wave recording playback is to transmit the recorded wave data to the DSP controller with low latency through the high-speed transmission interface, to meet the high fitting point requirements of the recording wave playback from data transmission to data processing, and then to the recording data through the DAC output, where the transmission rate of the recording data to the DSP controller is required to be fast, where the 100M network port transmission is used, the transmission rate of the internal DSP controller to the data memory is required to be fast, and the DSP internal DMA transmission is used. Data memory using DDR2 memory, memory size of 128MB, transmission rate > 2GB / s, requiring data memory to SPI interface transmission rate fast, here the use of DSP ...

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Abstract

The invention provides a signal generator for a continuous long wave recording playback power source and a signal generation method. The signal generator comprises a controller, a first sectional digital-to-analog conversion unit and a second sectional digital-to-analog conversion unit, the controller receives the analyzed recording data, stores the data in blocks according to a certain sequence, transmits the stored data to a data interface according to a certain sequence, and outputs a voltage output signal and a current output signal to a corresponding first sectional digital-to-analog conversion unit and a corresponding second sectional digital-to-analog conversion unit through the data interface; and the controller performs data transmission continuously and circularly to realize continuous recording playback. According to the invention, long-time and aperiodic signal generation can be realized, the time length of recording playback is convenient to extend, and the theoretical time length is not limited.

Description

Technical field [0001] The present invention belongs to the field of signal generation processing technology, in particular to a continuous long recorded wave playback power source for signal generators and signal generation methods. Background [0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art. [0003] With the development of power technology, the electricity load is complex and diverse, and the metering energy meter is required to accurately measure the electrical energy of various commonly used power load waveforms. [0004] At present, the energy meter measurement and detection adopts the electric energy comparison method, which requires a high-precision standard power source, which can realize the long-term and high-precision playback of the recorded waveform of the field load through the standard power source, and realize the energy metering verification and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/02H03M1/78G06F13/28
CPCG06F1/022H03M1/785G06F13/28Y02B90/20
Inventor 朱红霞李琮琮荆臻代燕杰王平欣马俊王清于超刘延溪赵曦
Owner 国网山东省电力公司营销服务中心(计量中心)
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