Automatic control of DC servo motor in terms of rotation angle has played a vital role in the advance Electromechanical Engineering. Nowadays, the automatic process of motor control using a Personal Computer (PC) is commonly used. The controllers are designed to interface between a Computer and Motor. This paper presents the implementation of PIC Microcontroller with Graphical User Interface (G...

A PIC17C44 microcontroller development board and a real-time algorithm were developed with the capability of monitoring the fetal heart rate (FHR) as well as recording both the FHR and maternal heart rate for long-term. This paper describes the development of the microcontroller board and implementation of a real-time algorithm which were used to develop the portable recorder. Two set-up were d...

Testing method of ADC’s implemented on microcontroller chips are descibed in the paper. The achieved results for microcontroller AT90S8535 and ADuC812 are discussed too. As a criterion of ADC precision, which allows to determine the operational condition limits, the number of effective bits has been chosen. More over, the DNL and INL measured characteristics are presented. The results are compa...

This paper presents a non-intrusive framework for runtime verification of executable microcontroller code. A dedicated hardware unit is attached to a microcontroller, which executes the program under scrutiny, to track atomic propositions stated as assertions over program variables. The truth verdicts over the assertions are the inputs to a custom-designed μCPU unit that evaluates past-time LTL...

In the frame of an ESA activity, ADV Engineering is developing a microcontroller based on the well-known Intel 8052 device. The objective is to develop a microcontroller for applications with moderate processing requirements but needing high safety and easy accommodation of equipment interfaces. This component is therefore a good candidate for embedding in a large variety of platform and payloa...

This application note demonstrates fundamental implementations of the cost effective heart hate monitor (HRM) and electrocardiograph (ECG or EKG) devices using Freescale products. The heart rate monitor is implemented on a low cost MC9RS08KA2 ultra low-end 8-bit microcontroller using an analog comparator module (ACMP) and standard IO pins. The electrocardiograph is implemented on the MC9S08JM60...

This paper presents the design and implementation of an AAC-class digital audio decoder and associated playback system on Microchip’s 16-bit, fixed-point dsPIC microcontroller. Unlike common student “MP3-player” projects that use dedicated decoder chips, one microcontroller handles everything here including I/O, decoding and the user interface. Data read from a flash card is decoded: Huffman co...

The stop watch is used to measure the time required for a certain event. This is different from normal clocks in many ways, one of which is the accuracy of time. The stop watch requires much more accuracy than the normal clocks. In this paper, an ATmega8535 microcontroller was used to control the stop watch, by which perfect accuracy can be ensured. For compiling the C code and for loading the ...

The Asporto Heart Preservation Device is a system providing perfusion of cardioplegia to the donor heart using a computer-controlled peristaltic pump in a thermoelectrically cooled and insulated container. In 1998, a user interface was developed at the University of Minnesota consisting of a touch screen and battery-backed microcontroller. Power was supplied by a 120 VAC to 12 VDC converter. An...

The ideal mathematical modle and error model of a 6-DOF portable flexible coordinate measuring machine (CMM) was established. A parameter data acquisition system for the portable flexible CMM was designed in this paper, which consisted angle sensors, temperature sensors, strain transducers and microcontroller, they were set in each joint and arm. The microcontroller was used to deal with the se...