ReadyDAQ Data Logger Demonstration





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Published on Jan 20, 2016

ReadyDAQ is your new personal and adaptable instant solution for LabVIEW software development.

In this demo, we’ve used a simulation of national instrument modules. We used analog input, analog output, Thermocouple signal modules and a 4mA-20mA current module to acquire signal measurements. All simulated modules were configured using a NI MAX application.

With the initiation of the ReadyDAQ logger, an ini file is requested. The ini file includes a couple of calibration coefficients (slope and offset) for each of the 16 analog inputs as well as preset values for the control analog output control bar – 10 channels. These values can be 0V/5V or PWM or any other voltage value in in the range ±10V.

After hitting RUN, the ReadyDAQ logger starts to exhibit acquired signals. There are different options to view data in ReadyDAQ logger at the top & bottom of the screen.

At the bottom, you can see:
* Analog input channels
* Current channels
* Thermocouple channels
* Service view

You can see the average values of the acquired signals

Users can choose the sample rate and the number of samples per channel. The average value of each signal is calculated on loop and shown in the upper view based on this sampling info.

You can also change the view at the top. Numbers is the default view at setup, but you can change it to Compare or AO Config.

AI Compare – in this feature two graphs of analog inputs are shown so you can choose which channels you’d like to compare. You can compare between more than one channel. Below the analog input view, you can compare three different analog output channels.

At the bottom of the screen, there is a Service view. Here, you can choose which modules you’d like to use.

In addition you can choose the PWM frequency for the analog output, the sample rate and the number of channels.

By choosing the AO Config view, you can see what values are sent to analog output modules.

At the top of the screen, you can see a control bar. In this demo the control bar was set to have five 0V/5V buttons, four continues values and one PWM channel. We can set up the control bar as well as any other part of the software according to your requirements.

The values here will change once you hit the SET button and you can then see analog outputs signal sent to the analog output modules on the graph.

In this example you can choose which value to change from the On/Off or Enable/Disable or/Open/Close buttons, to update the PWM output (0%-100%) and change the five continues value for the analog output channels. Once you click the SET button the new configuration for the control bar is sent to the analog output module.

Calibration information – If you use sensors with linear response that connect to your analog input channels, you can write the calibration coefficient in the ini file and exhibit the graphs and the measurements with physical values set according to the coefficient factor for each channel.

If you choose Calibrated data (instead of Raw data) you can see their values along with physical values.

With ReadyDAQ you have the option to log all acquired signals in a file. You can save all acquired signals to a file by hitting SAVE.
Once you hit SAVE, a popup asks you to optionally type Test Name, Operator, and Comments. This information is saved to the header of the saved file. It is definitely recommended to fill in Test Documentation information.

In the data logger file, the average value of each signal in each cycle is saved to the file. The path of the saved file is shown in the upper part of the software.

You can find file locations by clicking BROWSE, and seeing them in their folders. In ReadyDAQ data logger the data is written to the file every system loop, so in case you do a long measurement (a few hours/days for example) and from some reason the PC shuts down, all measurement up to that point are auto saved to your file.

While the ReadyDAQ data logger is running, it is recommended to open the file with Notepad, or any software other than MS Excel. You can open the file in Excel later by double clicking.

The saved file includes a header and logged data. The file header shows the date & time when measurements were carried out, in addition to Test Name, Operator and Comments if you filled them in, and calibration coefficients for every channel (sourced from the ini file). Below this, you can find measured information which includes a time column and the logged acquired signals. The file is produced in Excel format, so it’s easy to view & manipulate the data.

That’s all there is to it! We hope you enjoy using ReadyDAQ Data Logger. Do purchase the software from our site http://www.readydaq.com to get started. We’re happy to help.

Buy ReadyDAQ today to save thousands of dollars and spend less time on software development


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