| 摘要 |
FIELD: medicine.SUBSTANCE: assessing objective and subjective characteristics is followed by calculating a human engineering coefficient of a device of individual protection against air acoustic vibration. The characteristics are assessed before and after a work shift in a group of respondents. Assessing the characteristics is ensured by examining the skin condition and vibrotactile sensitivity which provide the basis to determine the following values: vibrotactile desensitisation caused by using the devices of individual protection that is ensured by determining a portion of respondents showing no vibrotactile desensitisation after using the device of individual protection for one shift (x), the skin condition under the device of individual protection - a portion of respondents showing no skin redness after using the device of individual protection for one shift (x), skin humidity under the device of individual protection - a portion of respondents showing normal skin humidity (x). Assessing the subjective characteristics is ensured by determining the following values: mass and dimensions of the device of individual protection - a portion of respondents considering the mass and dimensions to be 'satisfactory' (x), fastening effectiveness of the device of individual protection - a portion of respondents considering the fastening effectiveness to be 'satisfactory' (x), ease of use (comfort) of the device of individual protection - a portion of respondents considering the ease of use (comfort) to be 'satisfactory' (x); ease of unused storage of the device of individual protection considering ease of unused storage to be 'satisfactory' (x), occupational non-interference in the device of individual protection - a portion of respondents considering the occupational non-interference with using the device of individual protection (x), safe use of the device of individual protection - a portion of respondents considering the safe use to be 'satisfactory' (x), combination of the device of individual protection with other equipment elements - a portion of respondents considering the combination of the device of individual protection with equipment samples to be 'satisfactory' (x), discomfort caused by using the device of individual protection - a portion of respondents noted no discomfort caused by using the device of individual protection (x), protective properties of the device of individual protection - a portion of respondents noted the high protective properties of the device of individual protection (x), putting on/off comfort of the device of individual protection - a portion of respondents noted putting on/off comfort of the device of individual protection to be 'satisfactory' (x). The derived values are used to calculate the human-engineering coefficient of the device of individual protection against air acoustic vibration (k): k=0.15x+0.13x+0.04x+0.07x+ +0.1x+0.1x+0.02x+0.12x+0.1x+0.03x+0.05x+0.04x+0.05x. The calculated value k provides the basis to assess an ergonomics of the devices of individual protection against air acoustic vibration as low at k<0.4; as satisfactory at 0.4?k<0.7, good at 0.7?k<0.9 or excellent at k?0.9.EFFECT: method provides the ergonomic analysis of various examples of the devices of individual protection against air acoustic vibration and combinations thereof.5 tbl, 1 ex |
