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Breathing simulator of workers for respirator performance test.

Yuasa H, Kumita M, Honda T, Kimura K, Nozaki K, Emi H, Otani Y - Ind Health (2014)

Bottom Line: It is capable of generating various flow patterns by inputting breathing pattern signals recorded by a computer, as well as the fixed air flow patterns.The device is equipped with a self-control program to compensate the difference in inhalation and exhalation volume and the measurement errors on the breathing flow rate.The system was successfully applied to record the breathing patterns of workers engaging in welding and reproduced the breathing patterns.

View Article: PubMed Central - PubMed

Affiliation: Kanazawa University, Japan; Koken Ltd., Japan.

ABSTRACT
Breathing machines are widely used to evaluate respirator performance but they are capable of generating only limited air flow patterns, such as, sine, triangular and square waves. In order to evaluate the respirator performance in practical use, it is desirable to test the respirator using the actual breathing patterns of wearers. However, it has been a difficult task for a breathing machine to generate such complicated flow patterns, since the human respiratory volume changes depending on the human activities and workload. In this study, we have developed an electromechanical breathing simulator and a respiration sampling device to record and reproduce worker's respiration. It is capable of generating various flow patterns by inputting breathing pattern signals recorded by a computer, as well as the fixed air flow patterns. The device is equipped with a self-control program to compensate the difference in inhalation and exhalation volume and the measurement errors on the breathing flow rate. The system was successfully applied to record the breathing patterns of workers engaging in welding and reproduced the breathing patterns.

No MeSH data available.


Example of the real-time position correction
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fig_004: Example of the real-time position correction

Mentions: Figure 4Fig. 4.


Breathing simulator of workers for respirator performance test.

Yuasa H, Kumita M, Honda T, Kimura K, Nozaki K, Emi H, Otani Y - Ind Health (2014)

Example of the real-time position correction
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4380599&req=5

fig_004: Example of the real-time position correction
Mentions: Figure 4Fig. 4.

Bottom Line: It is capable of generating various flow patterns by inputting breathing pattern signals recorded by a computer, as well as the fixed air flow patterns.The device is equipped with a self-control program to compensate the difference in inhalation and exhalation volume and the measurement errors on the breathing flow rate.The system was successfully applied to record the breathing patterns of workers engaging in welding and reproduced the breathing patterns.

View Article: PubMed Central - PubMed

Affiliation: Kanazawa University, Japan; Koken Ltd., Japan.

ABSTRACT
Breathing machines are widely used to evaluate respirator performance but they are capable of generating only limited air flow patterns, such as, sine, triangular and square waves. In order to evaluate the respirator performance in practical use, it is desirable to test the respirator using the actual breathing patterns of wearers. However, it has been a difficult task for a breathing machine to generate such complicated flow patterns, since the human respiratory volume changes depending on the human activities and workload. In this study, we have developed an electromechanical breathing simulator and a respiration sampling device to record and reproduce worker's respiration. It is capable of generating various flow patterns by inputting breathing pattern signals recorded by a computer, as well as the fixed air flow patterns. The device is equipped with a self-control program to compensate the difference in inhalation and exhalation volume and the measurement errors on the breathing flow rate. The system was successfully applied to record the breathing patterns of workers engaging in welding and reproduced the breathing patterns.

No MeSH data available.