Multichannel automatic foetal movement monitoring and classification system

  • I. Florentin
  • G. F. Inbar
  • I. E. Timor-Tritsch


The purpose of this work was to develop a compact, noninvasive and objective tool for foetal movement monitoring and classification. Four tocodynamometers were used as movement transducers and their output signals processed by a minicomputer on which a microprocessor real time compatible algorithm was developed. The algorithm was based on time domain analysis where the parameters, such as averaging intervals and threshold levels were optimised in a trial and error procedure to minimise undetected foetal movements and false detections on a set of nine pregnant women. The detection score was 92·2 per cent when short foetal movements were ignored.


Foetal movements Movement classification Real time classification Time domain classification Tocodynamometers 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bonner, R. E. andSchwetman, H. D. (1968) Computer diagnostic of electrocardiograms: II. A computer program of ECG measurements.Comput. & Biomed. Res.,1, 366–386.CrossRefGoogle Scholar
  2. Inbar, G. F. (1979) Karhunen Loeve orthogonalization expansion for biological signal classification. XII International Conf. on MBE, Jerusalem.Google Scholar
  3. Inbar, G. F. andNoujaim, A. (1984) Surface EMG spectral characterization and its application to diagnostic classification.IEEE Trans.,BME-31, 9, 597–604.Google Scholar
  4. Markel, J. D. andGray, A. H. (1976)Linear prediction of speech. Springer Verlag.Google Scholar
  5. Pearson, J. F. andWeaver, J. B. (1976) Foetal activity and foetal wellbeing: an evaluation.Br. Med. J.,1, 1305–1307.CrossRefGoogle Scholar
  6. Ron, M. andPolishuk, W. Z. (1976) The response of the foetal heart rate to amniocentesis.Br. J. Obstet. Gynecol.,83, 768–770.Google Scholar
  7. Sadovsky, E. andPolishuk, W. Z. (1977) Foetal movements in utero: nature, assessment, prognostic value, timing of delivery.Obstet. and Gynecol.,50, 49–55.Google Scholar
  8. Timor-Tritsch, I. E., Dierker, L. J., Zador, I., Hertz, R. H. andRosen, M. G. (1977) Classification of human foetal movement.Am. J. Obstet. Gynecol.,126, (1), 70–77.Google Scholar
  9. Timor-Tritsch, I. E., Dierker, L. J., Hertz, R. H., Deagan, N. andRosen, M. G. (1978) Studies of antepartum behavioral states in the human foetus at term.Am. J. Obstet. Gynecol.,132, (5), 524–528.Google Scholar
  10. Wennberg, A. andZetterberg, L. H. (1971) Application of a computer-based model for EEG analysis.Electroenceph. & Clin. Neurophysiol.,31, 457–468.CrossRefGoogle Scholar

Copyright information

© IFMBE 1985

Authors and Affiliations

  • I. Florentin
    • 1
  • G. F. Inbar
    • 1
  • I. E. Timor-Tritsch
    • 2
  1. 1.Department of Electrical EngineeringThe Julius Silver Institute of Biomedical EngineeringHaifaIsrael
  2. 2.Department of Obstetrics and Gynecology ‘A’Rambam Medical CenterHaifaIsrael

Personalised recommendations