An infusion pump uses sensors and a computer program to detect tubing in a tube-loading section of the pump. The pump and the computer program also measures one or more of the tubing outer diameter, outer circumference, inner diameter, inner circumference, and tubing wall thickness. The infusion pump utilizes proximity sensors, such as an ultrasonic sensor, a capacitive sensor, or even an air-in-line sensor to detect proximity between two infusion pump surfaces, such as the surfaces that clamp the tubing in the pump, to determine thickness. At least one of the clamping surfaces is equipped with sensors to indicate contact length of the tubing with the surface. Using these measurements, the tubing wall thickness and inner diameter can be determined. Knowing the actual tubing inner diameter, increased volumetric accuracy is possible, up to a three or four percent improvement over present measurements.一注入泵使用感測器及一電腦程式,以偵測該泵的管件載入區段中之管件。該泵及該電腦程式亦測量該管件外徑、外部圓周、內徑、內部圓周、及管件壁面厚度的一或多個。該注入泵利用近接感測器,諸如超音波感測器、電容式感測器、或甚至氣泡混入感測器,以偵測二注入泵表面、諸如夾住該泵中之管件的表面間之接近度,以決定厚度。該等夾住表面之至少一個係配備有感測器,以指示該管件與該表面之接觸長度。使用這些測量,該管件壁面厚度及內徑能被決定。已知該實際管件內徑,增加之體積測定式準確性係可能的,直至遍及本測量的百分之三或四的改良。10...梭動部份12...運動壓盤14...固定不動壓盤16...管件18...發射器19...接收器24...感測器陣列50...注入泵52...進入閥53...排出閥54a...線性作動器54b...線性作動器54c...線性作動器
