Development of a method for rating climate seat comfort

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Scheffelmeier, M.^1 ; Classen, E.^1

Hohenstein Institute fuer Textilinnovation GGmbH, Boennigheim, Germany^1

关键词: Ambient conditions;    Buffering capacities;    Driving simulator;    Material characterisation;    Measuring method;    Product measurements;    Resistance values;    Subjective perceptions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/18/182010/pdf
DOI  :  10.1088/1757-899X/254/18/182010

来源: IOP

【 摘 要 】

The comfort aspect in the vehicle interior is becoming increasingly important. A high comfort level offers the driver a good and secure feeling and has a strong influence on passive traffic safety. One important part of comfort is the climate aspect, especially the microclimate that emerges between passenger and seat. In this research, different combinations of typical seat materials are used. Fourteen woven and knitted fabrics and eight leathers and its substitutes for the face fabric layer, one foam, one non-woven and one 3D spacer for the plus pad layer and for the support layer three foam types with variations in structure and raw material as well as one rubber hair structure were investigated. To characterise this sample set by thermo-physiological aspects (e.g. water vapour resistance Ret, thermal resistance Rct, buffering capacity of water vapour Fd) regular and modified sweating guarded hotplates were used according to DIN EN ISO 11092. The results of the material characterisation confirm the common knowledge that seat covers out of textiles have better water vapour resistance values than leathers and its substitutes. Subject trials in a driving simulator were executed to rate the subjective sensation while driving in a vehicle seat. With a thermal, sweating Manikin (Newton Type, Thermetrics) objective product measurements were carried out on the same seat. Indeed the subject trials show that every test subject has his or her own subjective perception concerning the climate comfort. The results of the subject trials offered the parameters for the Newton measuring method. Respectively the sweating rate, sit-in procedure, ambient conditions and sensor positions on and between the seat layers must be comparable with the subject trials. By taking care of all these parameters it is possible to get repeatable and reliable results with the Newton Manikin. The subjective feelings of the test subjects, concerning the microclimate between seat and passenger, provide the evaluation of the Manikins output (Rcand Revalues).