Fast fourier transform data compression for vibration applications

A system for data compression for a vibration application, comprising:

• at least one processor;
• and
• a non-transitory computer-usable medium embodying computer program code, the non-transitory computer-usable medium capable of communicating with the at least one processor, the computer program code comprising instructions executable by the at least one processor and configured for:
• applying a Fast Fourier Transform (FFT) to raw vibration data to obtain FFT coefficients;
• classifying the FFT coefficients as high energy coefficients or low energy coefficients based on predetermined thresholds;
• quantizing the high energy coefficients using a first quantization and the low energy coefficients using a second quantization as quantized coefficients;
• and
• generating an indicator array to identify positions of the high energy coefficients and the low energy coefficients for use in packetizing the positions and the quantized coefficients and recovering lossy raw data from the quantized coefficients for data compression of the raw vibration data.

A sensor, comprising:

• a vibration application, wherein:
• a Fast Fourier Transform (FFT) is applied to raw vibration data to obtain FFT coefficients;
• the FFT coefficients are classified as high energy coefficients or low energy coefficients based on predetermined thresholds;
• the high energy coefficients are quantized using a first quantization and the low energy coefficients using a second quantization as quantized coefficients;
• and
• an indicator array is generated to identify positions of the high energy coefficients and the low energy coefficients for use in packetizing the positions and the quantized coefficients and recovering lossy raw data from the quantized coefficients for data compression of the raw vibration data.