首页>
外文期刊>Sensors
>In-Depth Investigation into the Transient Humidity Response at the Body-Seat Interface on Initial Contact Using a Dual Temperature and Humidity Sensor
【24h】
In-Depth Investigation into the Transient Humidity Response at the Body-Seat Interface on Initial Contact Using a Dual Temperature and Humidity Sensor
Relative humidity (RH) at the body-seat interface is considered an important factor in both sitting comfort and generation of health concerns such as skin lesions. Technical difficulties appear to have limited research aimed at the detailed and simultaneous exploration of RH and temperature changes at the body-seat interface; using RH sensors without the capability to record temperature where RH is recorded. To explore the causes of a spike in RH consistently produced on first contact between body and seat surface, we report data from the first use of dual temperature and RH (HTU21D) sensors in this interface. Following evaluation of sensor performance, the effect of local thermal changes on RH was investigated. The expected strong negative correlation between temperature and RH (R 2 = ?0.94) supported the importance of considering both parameters when studying impact of sitting on skin health. The influence of sensor movement speed (higher velocity approach: 0.32 cm/s ± 0.01 cm/s; lower velocity approach: 0.17 cm/s ± 0.01 cm/s) into a static RH region associated with a higher local temperature were compared with data gathered by altering the rate of a person sitting. In all cases, the faster sitting down (or equivalent) generated larger RH outcomes: e.g., in human sitting 53.7% ± 3.3% RH (left mid-thigh), 56.4% ± 5.1% RH (right mid-thigh) and 53.2% ± 2.7% RH (Coccyx). Differences in size of RH change were seen across the measurement locations used to study the body-seat interface. The initial sitting contact induces a transient RH response (duration ≤ 40 s) that does not accurately reflect the microenvironment at the body-seat interface. It is likely that any movement during sitting would result in similar artefact formation. As a result, caution should be taken when investigating RH performance at any enclosed interface when the surfaces may have different temperatures and movement may occur.
展开▼
机译：座椅与座椅之间的相对湿度（RH）被认为是就座舒适性和产生健康问题（例如皮肤损伤）的重要因素。技术上的困难似乎限制了针对人体座椅接口处的相对湿度和温度变化的详细和同时探索的研究。使用RH传感器，但无法在记录RH的地方记录温度。为了探究在车身与座椅表面之间的首次接触中始终产生RH峰值的原因，我们报告了首次在此界面中使用双重温度和RH（HTU21D）传感器的数据。在评估传感器性能之后，研究了局部热变化对RH的影响。在研究坐姿对皮肤健康的影响时，预期的温度与RH之间的强负相关性（R 2 = 0.94）支持了考虑这两个参数的重要性。将传感器移动速度（较高的进场速度：0.32 cm / s±0.01 cm / s;较低的进场速度：0.17 cm / s±0.01 cm / s）与较高的局部温度相关的静态RH区域的影响与数据进行了比较通过改变一个人的坐姿来收集。在所有情况下，坐下得更快（或同等速度）都会产生较大的RH结果：例如，在人类坐下时53.7％±3.3％RH（大腿中部左侧），56.4％±5.1％RH（大腿中部右侧）和53.2％相对湿度2.7％（尾骨）。在用于研究人体座椅接口的测量位置上，可以看到相对湿度变化大小的差异。最初的坐姿会引起短暂的RH响应（持续时间≤40 s），该响应不能准确反映出人体与座椅之间的微环境。坐着时的任何运动都可能导致类似的伪像形成。因此，在调查任何封闭表面上的RH性能时，表面可能具有不同的温度并可能发生移动时，应格外小心。
展开▼
