ERGONOMIC QUALIMETRY METHOD OF COLLECTIVE NOISE PROTECTION DEVICE Russian patent published in 2017 - IPC A61B5/00 A61B5/12 A61B5/16 

FIELD: physics.

SUBSTANCE: objective characteristics are determined on the basis of the medical examination results and subjective characteristics are received on the basis of the questionnaires of respondents with the subsequent coefficient calculation of the collective noise protection device ergonomics. The following are used as objective characteristics: the excess of the maximum sound pressure level registered during the working shift within the collective protection at the octave frequency of 31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz, the maximum permissible level established by regulatory documents. In addition, resistance is determined: systolic and diastolic blood pressure, variation range, minute volume of blood circulation, stroke volume, cardiac index, stroke index, pulse rate, stress index; an estimation of workplace illumination, floor illumination, external illumination, temperature comfort, air movement speed, atmospheric pressure. The following are used as subjective characteristics: the quality of climate control, ringing (noise) in the ears, pressure and heaviness in the ears, dizziness, headache, noise and heaviness in the head, fatigue, performance, attention, sleep, unpleasant sensation in the heart, well-being, activity, mood, acoustic comfort, reach of the motor field, ergonomics: tables, chairs, cabinets; review up, down, left, right; overview through the window, legroom, room size, window size, room comfort, quality of interface with external workplaces, astimates in relation to field conditions, operational evaluation. Based on the obtained estimates, the ergonomics coefficient of the collective noise protection device is calculated using a mathematical expression. Depending on the value obtained, the ergonomic level of the collective noise protection device is astimated as low, satisfactory, good or excellent.

EFFECT: method allows to provide the possibility of ergonomic qualimetry of the collective noise protection device by defining objective estimates of informative characteristics.

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