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New NIYANTRA 2013 - Programming in LabVIEW -The HeartThrob Stethpscope
(Make sure you follow all the 3 steps involved in submission. This is only Step 2 of 3. For details, visit http://bit.ly/16iNfUL)
Contact Information
Name of the College: Prathyusha Institute Of Technology And Management,Thiruvallur.
Name of the Team Members along with their respective current semester :
R.Nandhini(7th sem)
R.Nirmal Jacqueline(7th sem)
Swathi Prakash roe(7th sem)
Sai Gayathri(7th sem)
E-Mail Address & Phone Number of the Team Leader :
9566258374
Name of the Faculty Guide :Mrs.Kalpana Devi
E-Mail Address & Phone Number of the Faculty Guide :
9962688222
Project Information
Project Title: Programming in LabVIEW-The HeartThrob Stethoscope
Hardware & Software Used:
LabVIEW Software
Discription
Programming in LabVIEW
The LabVIEW program was designed to process the signal play the input, collect adjusted sound waves, and write the data to a file. The code focuses on the audio aspect of the recordings.The generated Waveform does not resemble the expected heart sound waveform.It was brought to our attention that doctors cannot acquire information out of the visual waveform, so the HeartThrob team decided to emphasize on the clarity and amplification of the audio output.
PLAYING THE INPUT
The signal is transferred through the stethoscope head and collected in the transferred as an input by the microphone jack on the netbook.Once the program is started, the user selects heart or lung sounds, and the program responds by entering the corresponding loop. The true condition represents the heart signaling process,whereas the false condition refers to the lung reads in the signal, and the I/O devices begin to write the data. The data enters a loop where it is filtered and amplifier. The filtered signal is playing back through headphones or speakers
THE FILTERS
A bessel filter response was used to process both signals because it features flat group delay in the passbands which is favorable to our digital processing. The heart filter The lung Filter passes 200-400 Hz frequencies with a 6th order filter.After the filtering, both of the signals are amplified by a factor of 20. These values have been according to standard heart and lung sounds. The sensor is surrounded by foam, so at this time we are not having any trouble with noise interfering with acquiring data.
RECORDING THE SIGNAL
After the kiosk worker is satisfied with the playback, he can click the "record " button to begin recording the data. The worker will be prompted to name the location the data will be saved. The program enters a loop to continuously record the data for approximately 30 seconds.when the "stop record" button is selected, the data is written to the file, and the program exists the most interior loop.The user is able to record another sample and enter back into that loop, or the "stop playback" can be selected to exit all the loops and end the playback. During the recording, the user is able to see the waveform generated on the front panel.this waveform is only generated during the recording the process to let the user be aware that he is recording verses when he may only be listening to playback.
YouTube Link of Video: http://youtu.be/Sciv8LlLwog
Insert the Video here:http://youtu.be/d5nB2fMVZTQ
