• Journal of the Korean Institute of Telematics and Electronics B
• /
• v.30B no.11
• /
• pp.47-55
• /
• 1993

This paper is to design an autobalancing system based-on microprocessor for hemodiafiltration (HDF) system. The proposed system consist of motor control part, thermostatic control part, alarm system and electronic scale which ar automatically controlled by microprocessor. Conventional hemodialysis system can not remove medium molecular articles but hemodialysis system with the proposed system can remove and infuse substitute to the patient. This system can be easily interfaced with any other conventional HD system. The results obtained from performance evaluation of the proposed system are suitable for clinical supporting system.

• Proceedings of the Korea Contents Association Conference
• /
• 2010.05a
• /
• pp.272-273
• /
• 2010

The method of interrupt control is attempted to recognize the button-pushed result from a keyboard scan through control of 30ms appropriate period instead of key scan control method for a microprocessor system. This experimental study shows the reduced processing load of a microprocessor and prevention of the error by an algorithm when the keyboard buttons are both pushed at the same time as we recognize the result of a keyboard scanning by an interrupt method. In addition, an algorithm is provided to recognize the result of scanning by C programming as the keyboard button of a microprocessor system is pushed.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.21 no.2
• /
• pp.409-416
• /
• 1996

This paper describes the simulation environment that verifies whether a new microporcessor described with HDL is compatible with an existing microprocessor. The compatibility verification is done by showing that the new microprocessor executes the OS(Operating System) program used in the existing microprocessor without any modification of its binary code. The proposed verification environment consists of a virtual system and a graphic user interface (GUI) module. Each module is independently designed based on serve-client model and three exists a communication part for information interchange between the two modules. This paper describes the method of constructing the verification environment and presents the compatibility verification environment of the x86 microprocessor as the simulation result.

• Proceedings of the KIEE Conference
• /
• 2003.07d
• /
• pp.2106-2108
• /
• 2003

단상 또는 3상의 AC 전원의 전류나 전압 또는 전력을 계측하기 위해 Analog Signal들을 Digital Signal로 변환하여 특정 Algorithm의 연산을 수행하여 결과를 얻는 과정을 Microprocessor를 이용하여 처리하는 방법은 산업현장이나 연구개발에서 흔히 사용하는 방법이다. 본 논문에서는 Microprocessor를 이용하여 보편화된 3가지의 계측 Algorithm인 DFT, True RMS, Summation Algorithm을 사용하여 동일 System에 3상 AC의 전류 부하를 일정 범위에서 가변 하여 인가시키면서 계측 값을 사용하여 Algorithm의 계측 결과의 오차율과 연산에 소요되는 시간과 외부 잡음인 Surge, Impulse, 정전기, 방파, 고조파에 대한 System의 처리 효율을 연구 하였다.

• IEMEK Journal of Embedded Systems and Applications
• /
• v.12 no.2
• /
• pp.89-96
• /
• 2017

We develop an embedded system to measure various sensor data, control multiple motors, and communicate with mobile devices for system managements. Choosing TI AM3359 microprocessor featuring high processing performance, low power consumption, and various I/O device support, we design and build the embedded system hardware so that it supports multiple global positioning system (GPS) and gyro sensor modules to measure precise position; multiple pulse width modulation (PWM) outputs to control multiple direct current (DC) motors; a Bluetooth module to communicate with mobile devices. Then, we port the boot loader and device drivers to the built circuit board and construct the firmware development environment for the application programming. The performance of the designed and implemented embedded system is demonstrated by real motor control test using GPS and gyro sensor data and control parameters configured by a mobile device.

• Proceedings of the IEEK Conference
• /
• 2005.11a
• /
• pp.885-888
• /
• 2005

In this study, we designed an ARM9 compatible RISC microprocessor using VHDL. The microprocessor was designed to support Harvard architecture with separate instruction cache and data cache. The state machine was optimized for multi-cycle instructions. In addition, a data forwarding mechanism was adopted to reduce the stall cycles due to data hazards. Assembly programs were up-loaded into a ROM block for system-level simulation. Proper operation of the designed microprocessor was confirmed by investigating the contents of the internal registers as well as the RAM block. Futhermore, the simulation results clearly indicated that the operation speed of the processor designed in this study is enhanced by reducing the execution cycles required for multiplication related instructions.

• Journal of the Korean Institute of Telematics and Electronics
• /
• v.17 no.4
• /
• pp.1-10
• /
• 1980

A method to control the speed of D. C. motor with microprocessor is discussed in this paper, The system consisting of TTL and microprocessor measures the actual speed and compares it with a reference set speed and the error is used to control the speed of the D. C. motor. The steads - state error is less than 0.5% of maximum speed and this can be reduced with more exact measure of actual speed.

• The Transactions of the Korean Institute of Electrical Engineers P
• /
• v.62 no.3
• /
• pp.133-138
• /
• 2013

A large generator is an important role in transferring an electric power to power system. The IEDs of large generator often use microprocessor technology to obtain a digital relay system with a wide range of measuring, protection, control, monitoring, and communication functions. However, all generator protection and control systems in Korea imported from abroad and are being operated. In order to reduce the large expense and improve the reliable operation, development of generator protection and control system by domestic technology is required. This paper deals with the design of the IED of generator protection panel for development of generator protection and control system. The major emphasis of the paper will be on the description of hardware and signal processing test results and measurement accuracy of the prototype IED. By developing of generator IED based on DSP and microprocessor, replacement of the generator protection panel imports are expected to be effective.

• Journal of Mechanical Science and Technology
• /
• v.20 no.8
• /
• pp.1159-1168
• /
• 2006

In this paper, a new revolute mobile robot arm with five degree of freedom (d.o.f) was developed for autonomous moving robots. As a control system for the robot arm, a distributed control system composed of the main controller and five motor controllers for arm joints was developed. The main controller and the motor controllers w ε re developed using the ARM microprocessor and the TMS320c2407 microprocessor, respectively. A new trajectory tracking algorithm for the motor controllers was devised employing pre-generated off-line trajectory data. Also, a 3-D simulator based on the openGL software to simulate the motion of the robot arm was developed. To validate the performance of the robot system, experiments to track a specified trajectory were performed.

• Proceedings of the Korean Nuclear Society Conference
• /
• 1995.05a
• /
• pp.602-607
• /
• 1995

This article presents safety review experience of microprocessor-based Interposing Logic System(ILS) of Engineering Safety Feature Actuation System(ESFAS). The ILS is the first application of computerized logic design to safety system in Korean nuclear power plants without verification of the system reliability by proven technology concept. As a result of evaluation for the ILS, Korea Institute of Nuclear Safety(KINS) concluded that the microprocessor-based ILS is not acceptable in some features detailed enough to defend against software common mode failures(CMF). Therefore, we required licensee to install hardwired interlock signal configuration and a Hardwired Backup Panel to control safety-related equipment. We believe that the microprocessor-based ILS with the hardwired backup panel and inter-connection of interlock signal by hardwired configuration will improve the plant safety.