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題名 | A Quantitative Study for Body Perspiration with Conductivity-Based Humidity Sensing System=電導響應之濕度感測器於體表排汗的量化研究 |
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作者 | 張炳華; 葉守正; 蔡嬪嬪; 張憲彰; | 書刊名 | Journal of Medical and Biological Engineering |
卷期 | 21:4 2001.12[民90.12] |
頁次 | 頁197-204 |
分類號 | 471.3、471.3 |
關鍵詞 | 溫度感測器; 濕度感測器; 相對濕度; 導電度計; 排汗; Temperature probe; Humidity sensor; Relative humidity; Conductimeter; Sweating; |
語文 | 英文(English) |
中文摘要 | 本研究係利用一小型化之溫度補償濕度感測器,於0.5ml之固定反應容積內檢測微量相對濕度(relative humidity, RH)之變化,並將此反應槽置於體表之特定位置,可記錄人體部份區域之排汗過程。整個系統由溫度感測器(鎳-銅合金, T-type)、濕度感測器、流量計、導電度計與個人電腦所組成,其中濕度感測器是在指叉型網印電極上塗佈一層導電性高分子膜(poly-(2-acrylamido-2-methyl-propane sulfonate, PAMPS))所製成的,其相對濕度檢量範圍為30至90%RH,電導輸出值可從1 μS至85 mS,而其解析度與檢測靈敏度分別為6%RHmS^(-1)與0.1%RH。本實驗對於排汗過程之量化指標分為三個參數:(1)最大排汗率(MSR, %RH min^(-1)),代表實驗開始兩分鐘內汗腺之最大瞬間排汗率,並做為排汗初速度相關生理因子之探討;(2)部份排汗面積(SPA, %RH min),計算量測時間範圍之電量面積,為實驗開始後之兩分鐘內的時間與排汗量之乘積,藉此以表達出汗腺之排汗動能;(3)整體排汗之體積(SWA, %RH min),將整個排汗週期對於時間積分,以評估出汗腺之實際排汗量。利用這三個指標,我們分別嘗試去鑑別身體不同部位之排汗狀況。依據研究結果顯示,正常人體之左右手掌心平均之(MSR、SPA、SWA)值分別為(87.3±4.71、60.46±2.28、123.12±10.9,n=12)與左右腳掌心之(78.17±6.128、42.33±6.6、133.67±14.61,n=11)是明顯比胸部(44.5±1.87、23.0±0.89、99±3.6、n=6)和背部(43.7±2.5、25.16±1.47、103.5±1.87,n=6)排汗容易的。此結果之呈現與實際人體汗腺之分佈相近,故對於應用電導響應之濕度量測的本研究體系,可有效於臨床之排汗研究應用。 |
英文摘要 | The whole measuring system in this study was composed of temperature sensor (a T type of nickel-copper alloy), humidity sensor, flow meter, conductimeter and personal computer. The mini-chip humidity sensor with temperature compensation was fabricated by a conductive poly-(2-acrylamido-2-methyl-propane sulfonate) layer coated on an interdigitated style electrode surface, and was used to detect the slight variation of relative humidity (RH) in a 0.5 ml of closed space. The detection range for RH was 30 to 90%RH with respect to the conductance response from 1 μS to 85 mS, and the resolution was obtained to be 6%RH mS^(-1). This sensor unit was placed on a specific skin surface for sweating monitor and recorded the electrical signal output. Three indexes were characterized for sweating quantification in our experiments. (1) The maximum sweating rate (MSR, %RHmin^(-1)), being used to calculate the first derivative from the sweating data in the first two minute, is acceleration ability for sweat gland to sweating. (2) The partial area of sweating (SPA, %RH min), being used to evaluate the kinetic function of sweating by the SPA obtained from the time with RH value integral in the first two minute. (3) The whole area of sweating (SWA, %RH min), being got from the total area calculation for a complete interval, described the actual amount of sweating in monitor phase. These (MSR, SPA, SWA) values were statistically tried to estimate the sweating difference for any body areas. Based on our results, the average of R and L palms (87.3±4.71, 60.46±2.28, 123.12±10.9, n=12) and the average of R and L soles (78.167±6.128, 42.33±6.6, 133.67±14.61, n=11) were more significant for sweating than chest (44.5±1.87, 23.0±0.89, 99±3.6, n=6) and back (43.7±2.5, 25.16±1.47, 103.5±1.87, n=6). This result was found to be well matching to the actual distribution of sweat gland in body. Therefore, the device with conductivity-based humidity sensing system is practicable in clinical sweat monitoring. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。