CbM requires capturing full bandwidth data to ensure that all harmonics, aliasing, and other mechanical interactions in both the time and frequency domain are accounted for. This data collection requires a high performance sensor and data acquisition (DAQ) system that can provide high fidelity, real-time data into a data analysis tool or application.
Using established tools like MATLAB® or newer Python-based tools like Tensorflow, analyzing the data, profiling the machinery, and creating algorithms for smart decision making is greatly simplified.
Vibration sensing has traditionally dominated most CbM applications because of the availability of sensors, and the science behind the analysis is better understood. The integrated electronic piezoelectric (IEPE) standard is a popular signaling interface standard for high end microelectronic mechanical systems (MEMS) and piezo sensors that are prevalent in the industry today.
CN0549 helps to address these gaps by providing a complete system from sensor to algorithm development.
Hardware:
Software:
To prepare the SD-card for the DE10-Nano board:
Now that you have everything plugged into the DE10-Nano and the CN0540 boards, its time to boot the system.
Make sure that your HDMI cable is connected into your HDMI monitor before applying power to the DE10-Nano board
Now its time to start communicating with the CN0540 so you can start streaming data. When you first open IIO-Oscilloscope you'll see two windows.
The CN0540 IIO Plugin automatically configures the CN0540, so it is ready to use as soon as you run the application. Calibration of the sensor is also automatically performed so that a user can start using the capture window to collect and analyze data. No other configuration is required for the application.
If you want to re-calibrate the system, shut the system down, or modify individual registers of the devices on the CN0540 that can also be done either using the CN0540 Plugin or using the DEBUG panel to write/read specific registers. This is optional and typically application specific.
Below is a picture of what the CN0540 IIO Plugin looks like.
Section | User Control | Description | Value |
---|---|---|---|
Power Control | SW_FF | Checks the current status of the ADG5421's FF Pin | Low(normal) High(over voltage) |
Shutdown | Shutdowns power from the AD7768-1 | Disabled(Power On) Enabled(Power down) |
|
ADC Driver Settings | FDA Status | ADA4945 Operational Status | Checked(Enable) Un-Checked(Disabled) |
FDA Mode | ADA4945 Power Mode | Checked(Full Power) Un-Checked(Low Power) |
|
Sensor Calibrations | Calibration Result | The Calibration is set for a 10V calibration | 10.0V |
Input Voltage(mV) | Calibrated AD7768-1 Input voltage offset | ~ 0.0V | |
Shift Voltage(mV) | Calibrated LTC2606 Level Shifting Voltage | ~ 0.0V | |
Sensor Voltage(mV) | Calibrated Sensor Input voltage | ~ 10.0V | |
Voltage Monitor | Vin+ (mV) | Input voltage coming from the sensor | |
Vgpoi2 (mV) | Not Used | N/A | |
Vgpoi3 (mV) | Not Used | N/A | |
Vcom (mV) | ADA4945 Common Mode input voltage | ~2.5 V | |
Vfda+ (mV) | AD7768-1 Ain+ input voltage | ||
Vfda- (mV) | AD7768-1 Ain- input voltage |
For CbM applications, most customers are typically interested in the frequency domain plots. To obtain a FFT plot, do the following:
You should see a nice plot like this when connected to the CN0532 sensor.
End of Document
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