Analysis and Design for High Speed Hematocrit Centrifuge Machine
Article Sidebar
Main Article Content
Abstract
Hematocrit Centrifuge Machine (HCM) is a tool used for separating red blood cells from blood. By using a motor that rotates at a speed between 10,000 and 14,000 rpm, it generates a relative centrifugal force (RCF) for the blood sample. Prior to medical analysis process, the blood samples were estimated percent of red blood cells. Currently, most of HCM's products imported from other countries are expensive. Therefore, creating knowledge and increasing efficiency of high speed HCM that meets the standards of the Ministry of Public Health can help domestic manufacturers compete with international companies. This paper present the analysis of working principle and the design of HCM prototype, with brushless direct current motor speed control system for controlling the speed of work with stable condition. The Vertical Balancing Device (VBD) is used to balance the disk, which packs up the micro-hematocrit tube test, it can reduce vibration from its unbalance. Moreover, the analysis for accurate vibration isolators can reduce the vibration’s force transmissibility from disk rotor to body-chamber. This allows the HCM prototype to have the same working efficiency as imported products.
Article Details
References
Areejitranusorn, C. (1991). Scientific Instruments. Khonk Kaen. Klang Nana Vithaya Printing (in Thai)
Dujdao, B., Noppadol, P., Anothai, S., and Natthaphat, R. (2016). Performance Evaluation of Microhematocrit Centrifuge in the Primary Care Units in Phitsanulok Province. Bulletin of the Department of Medical Sciences. Vol. 58, No. 4, pp.221-228 (in Thai)
Tassaneya, C., Wilairat, N., Suwalee, I., and Tulaya, U. (2013). Study of Clinical Chemistry Parameter in Plasma Separated by Various Relative Centrifugal Forces. In Proceeding of First Annual Academic Conference of Golden Jubilee Medical Center. Mahidol University. pp. 235-247 (in Thai)
Srisertpol, J. (2013). Mechanical Vibration 2nd edition. Nakhon Ratchasima: School of Mechanical Engineering, Suranaree University of Technology
Taweeapiradeerattana, A., Pawako, S., Rodpai, A., Numanoy, N., and Srisertpol, J. (2018). Analytical Design the Vertical Balancing Device for Hematocrit Centrifuge Machine. Journal of Physics Conference Series. pp. 1-7. DOI: 10.1088/1742-6596/1074/1/012064
Gitte, W. (2004). Hematocrit-a Review of Different Analytical Method. Access (10 July 2019). Available (https://acutecaretesting.org/en/articles/hematocrit--a-review-of-differentanalytical-methods)
Max, M. S., Albert, B. S., and Eleanor, D. H. (1954). An Improved Micro Hematocrit Method. American Journal of Clinical Pathology. Vol. 24, Issue 9, pp. 1016-1024. DOI: 10.1093/ajcp/24.9.1016
Pawin, J. and Jiraphon, S. (2013). Speed Estimation of 3-Phase BLDC Motor Using Genetic Algorithm. International Journal of Engineering Science and Innovation Technology. Vol. 2, Issue 1, pp. 254-263
Prasad, G., Venkateswara Reddy M., P. V. N. Prasad, and G. Tulasi Ram Das. (2012). Speed Control of Brushless DC Motor with DSP Controller using MATLAB. International Journal of Engineering Research and Applications. Vol. 2, Issue 3, pp. 2120-2125
Pawako, S., Taweeapiradeerattana, A., Odngam, S., and Srisertpol, J. (2017). Speed Control System Design of the Brushless DC Motor for Hematocrit Centrifuge Machine. In Proceeding of National Conference “2017 Innovation and Technology”. Rajamangala University of Technology Isan Surin Campus. (in Thai)
Åström, K. J. and Hägglund, T. (2006). Advanced PID Control. ISA - The Instrumentation, Systems, and Automation Society
Manjita, S., Srivastava, M. C., and Smriti, B. (2009). Control System - MATLAB and Simulink Tutorial. 7 West Patel Nagar, New Delhi: Tata McGraw-Hill
Manjusha, P. (2014). Modelling and Simulation of DC Drive using PI and PID Controller. International Journal of Innovative Research in Electrical, Electronic, Instrumentation and Control Engineering. Vol. 2, Issue 12, pp. 2263-2266
Guilherme, K. Y., Cesar da Costa and João Sinohara da S. S. (2016). A Smart Experimental Setup for Vibration Measurement and Imbalance Fault Detection in Rotating Machinery. Case Study in Mechanical System and Signal Processing. Vol. 4, pp. 8 -18. DOI: 10.1016/j.csmssp.2016.07.001
ISO 10816-1. (1995). Mechanical vibration - Evaluation of Machine Vibration by Measurements on Non-Rotating Parts - Part 1. General guidelines (Switzerland: ISO)