LabVIEW depicts analog waveform and digital waveform under the same panel

LabVIEW Draw analog waveform and digital waveform under the same panel

Simultaneously collect in the program / Analog waveform and digital waveform are generated , And I want to see these two waveforms in the same graphic display control . however , These two waveforms cannot be connected to the same graphic display control at the same time , Because of different data types . Is there a way to draw these two waveforms simultaneously in the same waveform display control ？

answer :

In order to be able to see analog waveform and digital waveform in the same waveform display control , Mixed signal waveform diagram can be realized , But in separate graphic panels , As shown below .

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The mixed signal waveform can be found in the modern control board 》 Found in the oscillogram , And on the path basis of the example finder 》 There is also one in the graph and chart MixedSignalGraph.vi Example of , It is used to show how to use the mixed signal waveform .

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If you want to see analog waveform and digital waveform under the same graphic panel , As shown in the figure below , Then the digital waveform must be converted to analog waveform .

In order to convert the digital waveform data type to （ simulation ） Waveform data type , Some algorithms must be used to convert the high and low levels of digital to the corresponding analog level values . The figure below VI It can convert digital waveform into analog waveform , According to the number high （1） Convert to 5V level , Low number （0） Convert to 0V Principles .

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The above procedure , And how to treat the above program as a sub VI Examples of use can be found in DeveloperZoneCommunity:PlottingAnalogandDigitalWaveformsontheSamePlane find .

Because digital and analog waveforms are LabVIEW Is represented by different data types , So it's hard to be in VI View them on the same graphic on the front panel . Mixed signal diagram is helpful to draw waveform on the same index , But for analog and digital waveform data types , Still use a separate graphic plane . It may be more useful to view analog and digital waveforms on the same graphic plane . In this case , Additional numbers WFm Convert to simulation Wfm.vi Will receive the digital waveform and convert the first line to the analog waveform data type . same Graph.vi Attached on GraphDig&AnlgWfms Use ConvertDigitalWfmtoAnalogWfm.vi As SubVI To draw analog and digital waveforms on the same plane .

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LabVIEW Draw analog waveform and digital waveform under the same panel - Beijing Hanwen Wangxing Technology Co., Ltd (bjcyck.com)