[雙語翻譯]單片機外文翻譯--嵌入式血泵監(jiān)控微控制器的設計（英文）

1、 Procedia Computer Science 72 ( 2015 ) 217 – 224 Available online at www.sciencedirect.com1877-0509 © 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://crea

2、tivecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of organizing committee of Information Systems International Conference (ISICO2015) doi: 10.1016/j.procs.2015.12.134 ScienceDirectThe Third Infor

3、mation Systems International Conference Design of Embedded Microcontroller for Controlling and Monitoring Blood Pump Pratondo Busonoa, Andi Iswahyudib, M.Akbar Aulia Rahmanb, Ario Fitriantoa aCenter for Information an

4、d Communication Technology, BPPT, Kawasan Puspiptek Serpong,Tangerang, Indonesia bDepartment of Electrical Enginnering, University of Al-Azhar Indonesia, Jakarta, Indonesia Abstract The peristaltic pump has a vital rol

5、e for transporting the blood in the extracorporeal circuit of hemodialysis machine. Such a pump consits of a stepper motor, gear box and rotor shaft with two roller attached on it. The transported volume of the pump

6、 depends on the tube segment pressed by roller. Therefore, the deviation in the amount of delivered fluid may occurs. It is a problem when it is used in the medical device with high accuracy requirements such as hemod

7、ialysis machine. To overcome such a problem, the transport of fluid need to be controlled. The aim of this work was to design and implement of an embedded microcontroller for controlling and monitoring fluid transp

8、ort in the peristaltic pump. An electronic hardware which consists of STM32F4 development board, stepper motor driver circuit, current sensor, magnetic sensor and arterial presure sensor circuits was developed in para

9、llel with embedded software development. The embedded sofware consists of routines for monitoring current sensor, pressure sensor, and magnetic sensor, as well as routines for pump speed controller. The STM32F4 board

10、 which consits of ARM Cortex M4F microcontroller was chosen because of the trade off between price, performance, and low power consumption. The peristaltic pump system was tested with the mixture of water and glyce

11、rin with certain composisition and having viscosity simular to human blood. The validation was also be performed by comparing the results with the measurement conducted using turbine flow meter. The results shows that

12、 the performance of the controller is working as expected. © 2015 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the scientific committee of The Third Information Systems Internati

13、onal Conference (ISICO 2015) Keyword: blood pump controller, stepper motor, microcontroller, embedded system © 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://cr

14、eativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of organizing committee of Information Systems International Conference (ISICO2015)219Pratondo Busono et al. / Procedia Computer Science 72

15、( 2015 ) 217 – 224 2. Peristaltic Blood Pump System In the extracorporeal circuit of hemodialysis machines, the blood flow is transported by a peristaltic pumping system. The system as shown in Fig.1 consists of p

16、eristaltic pump head, stepper motor with gear box, motor driver and controller. The pump head was constructed by housing body and a rotor with two rollers attached on it. An elastic tube is fitted to a semi circular c

17、hamber that partly surrounds the rotor and the transferred fluid gets in contact only with the inside of the tubing and hence lowering the risk of contamination [2]. The tube set is changed between each patient. When t

18、he pump is in operation, one roller will press the elastic tube segment to the housing and force the blood to move forward. Before the first roller reaches the end of the housing and release the manifold, the second ro

19、ller will close tube segment preventing the back-flow [3,4]. The compression of the plastic tube induces a resistance on the pump motor which will create a relatively large pressure disturbance in the fluid flow. Figu

20、re 1. Peristaltic blood pump system In order to get the accurate blood volume to be transferred, controlling the pump speed is important in hemodialysis. The pump speed can be set by controlling the amount of currents

21、 injected by the electronic motor driver. Such currents are converted to PWM duty cycle for powering the phase coils, and hence changing the motor speeds. In the case of peristaltic blood pump, the PWM duty cycles

22、are not constant since the load is dynamics, depending on the amount transfered fluid volume. 2.1. Electrical Model Schematic diagram of stepper motor driver is shown in Fig.2. If two phase stepper motor used for dri

23、ving the pump, each of the two electrical phases of the stepper motor can be modelled as RL circuit and back electromotive force as follow [5], ) ( ) ( ) ( ) ( t u t e t i R dtt di L j j j w j w ? ? ? ?for j = A, B