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文中介绍了一种集力、温度和湿度传感器信息的座椅舒适度检测系统。传感器的布放采用已发表文章中所介绍的布放方式:温度和湿度传感器分别放置在左、右腿和尾臀骨下方;4个力传感器分别放在左、右腿和左、右坐骨结节的下方。在进行人体实验前,对力、温度和湿度传感器的输出一致性进行了测试。测量数据显示:温度传感器标准方差为±0.2℃;湿度传感器标准方差为±0.3%,压力传感器标准方差为±0.09 V(其中加载负荷5 kg～15 kg,力传感器输出电压的变化为3.67～4.31 V),这表明所有的传感器具有一致的输出特性。在三天内,共有10人/次利用该检测系统对3种坐垫(泡沫、木质和压模坐垫)的舒适度进行了评估。为了避免次序效应对测量结果的影响,整个实验采用了拉丁方设计方法。通过将坐姿调整时间、最大温度和平均相对湿度与舒适度主观评测问卷进行对比分析,结果表明传感器的原始数据和相关参数的变化与人对座椅舒适度的主观评价之间存在一定的联系。
This paper introduces a set of strength, temperature and humidity sensor information seat comfort testing system. The placement of the sensors was based on the layout described in the published article: Temperature and humidity sensors were placed under the left, right and tail hips, respectively; four force sensors were placed on the left and right legs and the left and right ischial knot Under the festival. The output consistency of the force, temperature and humidity sensors was tested prior to human experiments. The measured data show that the standard deviation of the temperature sensor is ± 0.2 ℃, the standard deviation of the humidity sensor is ± 0.3% and the standard deviation of the pressure sensor is ± 0.09 V (load change of 5 kg ~ 15 kg and change of the output voltage of the force sensor is 3.67 ~ 4.31 V), indicating that all sensors have consistent output characteristics. Within three days, a total of 10 people / times used the test system to assess the comfort of three cushions (foam, wood and molded cushion). In order to avoid the influence of the order effect on the measurement results, Latin square design method was adopted in the whole experiment. By comparing the sitting adjustment time, maximum temperature and average relative humidity with comfort subjective evaluation questionnaire, the results show that there is a certain relationship between the changes of the original data and the related parameters of the sensor and the subjective evaluation of the seat comfort.