KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/kmitl/1

Browse

Settings

Subject: search.filters.subject.Flow rate

Search Results

Now showing 1 - 3 of 3
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Uroflowmetry recording design
    (2015-01-26)
    Dejhan, Rodjarin Boontawan Kobchai
    ;
    Yimman, Surapun
    This research presents the design and construction of a rotating-disc uroflowmetry machine which reduces the energy that collides with the disc, displays results on a Smartphone, and is able to record data. The machine consists of direct current motor, rotating disc, current sensor circuit, filter circuit and processor. The machine works by having a patient's urine directed onto the rotating disc causing change in the current received by the motor. This current can be used to calculate urine volume and flow rate which, in turn, can be used to detect urine abnormalities in patients with urinary tract related diseases. The accuracy of the results from the uroflowmetry machine is tested by a comparison with Torricelli's Law of fluid flow. The results from the comparison showed the uroflowmetry machine to be accurate and efficient for used in practical.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Flow rate controlling using phase-locked loop
    (2013-03-28)
    Prompak, Kriangsak
    ;
    Kaewpoonsuk, Anucha
    ;
    Maneechukate, Thongchai
    ;
    Phanphaisarn, Wasu
    ;
    Wardkein, Paramote
    This paper proposes controlling flow rate by using Phase-Locked Loop (PLL) to control the voltage output of power amplifier sent to the DC pump. With this technique, the flow rate of liquids in the pipe connected to such pump can be easily adjusted. With the property of PLL, the frequency of output signal of the flow sensor, which is proportional to the flow rate, is synchronized with that of the reference input. As a result, the flow rate remains constant. In addition, the experiment results show that the flow rate is not affected by the varying loads, i.e., the flow rate is stable to perturbations. © 2013 ICIC International.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Application of double gate ion sensitive field effect transistor for detection of fluid flow rate in micro-channel
    (2010-02-05)
    Jiemsakul, T.
    ;
    Trithaveesak, O.
    ;
    Bunjongpru, W.
    ;
    Hruanun, C.
    ;
    Poyai, A.
    In this work a micro flow sensor, using a double gate Ion Sensitive Field Effect Transistor (ISFET) and two metal electrodes, for fluid flow rate measurement in micro-channels were fabricated and demonstrated. By the channel fabrication the molds were patterned reversely on a silicon wafer using Deep Reactive Ion Etcher (DRIE). The double gate ISFET and two metal electrodes were placed on the mold in the distance 15 millimeters. The channels were formed using polydimethylsiloxane (PDMS) from the mold with the width 1000 and 2000 micrometer and the depth of 250 micrometer. After removing PDMS from the mold the channel was bonded with glass substrate by RF plasma technique. By the verification of flow sensors working range water and one mole of sodium nitrate solution were alternated in flow channel. The fluid flow rate were compared with the flow rate from weighing. It found from the comparison that the high deviation was found at low flow rate. Furthermore, the deviation depends also on the dimension of the flow channel. © (2010) Trans Tech Publications.