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Transactions on Science
and Technology,
3(2),
328 - 335, 2016 ISSN: 2289-8786 |
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Vibration Analysis of Electronic Baby Hammock Ying Hao Ko, Lu Ean Ooi, Yoon Ket Lee, Choon Wei Ko, Kok Rong Leong, Chun Boon Lim, Isaac Kong Liang Ung |
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ABSTRACT. Babies love being rocked to sleep in the baby hammock. The natural link between rocking and sleep is related to the frequency and amplitude. A clinical study has shown the optimum best rock to put a baby to sleep has an amplitude of 60mm and frequency of 0.55Hz. However, there is no depth study concerning on this topic. This paper covers the vibration analysis in terms of frequency and amplitude on the commercial electronic baby hammock. Vibration analysis of the weight from 3kg to 16kg is conducted. For each measurement, four conditions are considered: manual rocking, auto rocking with low, medium and high speed. From vibration analysis, the results indicated the auto rocking and manual rocking produce the dominant frequency from 1.1Hz to 1.4 Hz which is beyond 0.55Hz. These frequencies are not recommended since it might affect the babies’ brain development and growth. In the other hand, the results show that the corresponding amplitude of the respective dominant frequency is below 60mm. None of the measurements meet the optimum level of frequency and amplitude. Hence, further actions and improvements on the evaluation of safety (in terms of vibration) on electronic baby hammock are needed. Keywords Baby hammock; baby cradle; baby soothing method; physical parameters of rocking; vibration analysis. Download pdf. © Transactions on Science and Technology 2016
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