[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(shè)計

1、2500 英文單詞， 英文單詞，1.3 萬英文字符 萬英文字符,中文 中文 3900 字文獻出處： 文獻出處：Busono P , Iswahyudi A , Rahman M A A , et al. Design of Embedded Microcontroller for Controlling and Monitoring Blood Pump[J]. Procedia Computer Science, 2015, 72:2

2、17-224.Design of Embedded Microcontroller for Controlling and Monitoring Blood PumpPratondo Busono, Andi Iswahyudi, M.Akbar Aulia Rahman, Ario FitriantoAbstractThe peristaltic pump has a vital role for transporting the b

3、lood 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 depends on the tube segment

4、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 hemodialysis machine. To overcome suc

5、h 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 transport in the peristaltic pump. An electr

6、onic hardware which consists of STM32F4 development board, stepper motor driver circuit, current sensor, magnetic sensor and arterial presure sensor circuits was developed in parallel with embedded software development.

7、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 which consits of ARM Cortex M4F microcontrol

8、ler 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 glycerin with certain composisition and having viscosity

9、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 the performance of the controller is working as expect

10、ed.Keyword: blood pump controller, stepper motor, microcontroller, embedded system1. IntroductionEmbedded system is playing an important role in our life. It is a technology which makes our life more comfortable and saf

11、e. Most equipments used in our daily activity, ranging from medical to communication systems are builts upon embedded system. Therefore, today economy and society would heavily depend on them. Embedded systems have drive

12、n the product innovation and diversification in terms of functionality, efficiency, and quality [1].Unlike general purpose computer, embedded systems are built for specific applications. The application of embedded syste

13、ms in medical area for example is becoming great interest since it allows the construction of compact devices that help the physician in treating the patients.With the increasing power of processing device as well as the

14、 complexity of control system, with the current processing system, it is possible to integrate not only the control and monitoring activities, but also to take the decision tasks into embedded systems. In addition, with

15、the avaibility of a general purpose reconfigurable platform, it is possible to develop such a complex system with reduced time development and give results having similar characteristics to other similar embedded systems

16、. This system is also robust and fully reliable, capable of working for extended periods of time without failure.The performance of embedded control systems can affected by many factors. It depends not peristaltic pumpin

17、g system. The system as shown in Fig.1 consists of peristaltic 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 i

18、t. An elastic tube is fitted to a semi circular chamber 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 t

19、ube set is changed between each patient. When the 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 ho

20、using and release the manifold, the second roller 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 pr

21、essure disturbance in the fluid flow.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 i

22、njected 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 are not

23、constant since the load is dynamics, depending on the amount transfered fluid volume.Figure 2. Schematic diagram of stepper motor driver [5]2.1. Electrical ModelSchematic diagram of stepper motor driver is shown in Fig.2

24、. If two phase stepper motor used for driving 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],The phase current ij can be measure