Systems and methods include a test media, a reservoir containing fluid, and a sensor compared to measure a parameter that is related to an amount of fluid in the test media. Systems and methods may include a comparator to compare the parameter measurement to a parameter set point. Systems and methods may include a control system to control the addition of the fluid to the test media so that the parameter is maintained at a steady state value.本發明揭示一種包括測試媒體、包含流體之貯存器及比較測量與該測試媒體中的流體數量相關的參數之感測器的系統及方法。系統及方法可以包括一比較器來比較該參數測量與一參數設定點。系統及方法可以包括一控制系統來控制該流體對該測試媒體之添加,以便該參數係保持於一穩定狀態值。300...測量系統320...模擬系統322...患者負載模擬器/塊體324...熱供應器326...測試媒體330...熱源332...幫浦336...支撐表面340...支撐系統342...氣流343...空氣移動器350...控制系統352...感測器354...感測器比較器356...幫浦控制360...幫浦361...控制閥364...貯存器368...導管/供應線370...流體添加系統
