The Experts below are selected from a list of 135 Experts worldwide ranked by ideXlab platform

Gerard C. M. Meijer - One of the best experts on this subject based on the ideXlab platform.

  • Low-Cost Interfaces for Sensors and Sensor Systems
    Analog Circuit Design, 1997
    Co-Authors: Frank M. L. Van Der Goes, Gerard C. M. Meijer
    Abstract:

    This paper discusses the basic ideas, circuitry and applications of a novel family of low-cost transducer interfaces. These interfaces, which are directly read-out by a microcontroller, service the following sensor elements: Pt Resistors, thermistors, Potentiometers Resistors, capacitors, resistive bridges and voltage- and current sources. It is shown that, even when using lowcost CMOS technology, these interface and sensor systems can have a rather high accuracy. The interfaces have been designed for applications where the sensors signals have a low to moderate bandwidth. The main test results for some typical applications are reported in this paper. The accuracy amounts to 1 to 15 bits for a measurement time of 1 ms to 100ms. The number of external components has been kept to a minimum.

Frank M. L. Van Der Goes - One of the best experts on this subject based on the ideXlab platform.

  • Low-Cost Interfaces for Sensors and Sensor Systems
    Analog Circuit Design, 1997
    Co-Authors: Frank M. L. Van Der Goes, Gerard C. M. Meijer
    Abstract:

    This paper discusses the basic ideas, circuitry and applications of a novel family of low-cost transducer interfaces. These interfaces, which are directly read-out by a microcontroller, service the following sensor elements: Pt Resistors, thermistors, Potentiometers Resistors, capacitors, resistive bridges and voltage- and current sources. It is shown that, even when using lowcost CMOS technology, these interface and sensor systems can have a rather high accuracy. The interfaces have been designed for applications where the sensors signals have a low to moderate bandwidth. The main test results for some typical applications are reported in this paper. The accuracy amounts to 1 to 15 bits for a measurement time of 1 ms to 100ms. The number of external components has been kept to a minimum.

Diogenes Viegas Mendes Ferreira - One of the best experts on this subject based on the ideXlab platform.

  • EDUCON - Development of an educational tool for control engineering
    2015 IEEE Global Engineering Education Conference (EDUCON), 2015
    Co-Authors: Alan Kardek Rêgo Segundo, Jose Alberto Naves Cocota, Diogenes Viegas Mendes Ferreira
    Abstract:

    On this work, a device was made in order to help the visualization by the student of a PID temperature control and thus fix the concepts learned in the classroom. This device was built primarily with a PIC18F4550 microcontroller, a mini cooler from a PC, a heat resistor, LM35 temperature sensors, liquid crystal display, USB connector, transistors, LEDs, Potentiometers, Resistors and capacitors. The USB connection is responsible for recording the microcontroller firmware (bootloader mode), for interfacing with a supervisory software, and to supply the system. The heat resistor provides heat to the system. On the other hand, the cooler has the function of removing heat from the system. The liquid crystal display helps the student to check the temperature, the constants of the controller (K p , K i and K d ) and the set point temperature or the cooler voltage. The Potentiometers provide the option to run the system in open loop, that is, they serve to make the control of the heat supplied by the heat resistor and the cooler voltage manually. Both the heat resistor and the cooler are controlled via transistors switched by PWMs (Pulse Wide Modulation). A computer program was developed in C Sharp language to display the temperature over time measured by the sensors. The program also is used to adjust the constants K p , K i and K d of the controller and the temperature set point. The microcontroller firmware allows the system to operate in both open and closed loop modes. This work allows the student to learn in practice the control actions when the controller parameters are changed, contributing to improve the acknowledgment of Control Engineering.

Alan Kardek Rêgo Segundo - One of the best experts on this subject based on the ideXlab platform.

  • EDUCON - Development of an educational tool for control engineering
    2015 IEEE Global Engineering Education Conference (EDUCON), 2015
    Co-Authors: Alan Kardek Rêgo Segundo, Jose Alberto Naves Cocota, Diogenes Viegas Mendes Ferreira
    Abstract:

    On this work, a device was made in order to help the visualization by the student of a PID temperature control and thus fix the concepts learned in the classroom. This device was built primarily with a PIC18F4550 microcontroller, a mini cooler from a PC, a heat resistor, LM35 temperature sensors, liquid crystal display, USB connector, transistors, LEDs, Potentiometers, Resistors and capacitors. The USB connection is responsible for recording the microcontroller firmware (bootloader mode), for interfacing with a supervisory software, and to supply the system. The heat resistor provides heat to the system. On the other hand, the cooler has the function of removing heat from the system. The liquid crystal display helps the student to check the temperature, the constants of the controller (K p , K i and K d ) and the set point temperature or the cooler voltage. The Potentiometers provide the option to run the system in open loop, that is, they serve to make the control of the heat supplied by the heat resistor and the cooler voltage manually. Both the heat resistor and the cooler are controlled via transistors switched by PWMs (Pulse Wide Modulation). A computer program was developed in C Sharp language to display the temperature over time measured by the sensors. The program also is used to adjust the constants K p , K i and K d of the controller and the temperature set point. The microcontroller firmware allows the system to operate in both open and closed loop modes. This work allows the student to learn in practice the control actions when the controller parameters are changed, contributing to improve the acknowledgment of Control Engineering.

Jose Alberto Naves Cocota - One of the best experts on this subject based on the ideXlab platform.

  • EDUCON - Development of an educational tool for control engineering
    2015 IEEE Global Engineering Education Conference (EDUCON), 2015
    Co-Authors: Alan Kardek Rêgo Segundo, Jose Alberto Naves Cocota, Diogenes Viegas Mendes Ferreira
    Abstract:

    On this work, a device was made in order to help the visualization by the student of a PID temperature control and thus fix the concepts learned in the classroom. This device was built primarily with a PIC18F4550 microcontroller, a mini cooler from a PC, a heat resistor, LM35 temperature sensors, liquid crystal display, USB connector, transistors, LEDs, Potentiometers, Resistors and capacitors. The USB connection is responsible for recording the microcontroller firmware (bootloader mode), for interfacing with a supervisory software, and to supply the system. The heat resistor provides heat to the system. On the other hand, the cooler has the function of removing heat from the system. The liquid crystal display helps the student to check the temperature, the constants of the controller (K p , K i and K d ) and the set point temperature or the cooler voltage. The Potentiometers provide the option to run the system in open loop, that is, they serve to make the control of the heat supplied by the heat resistor and the cooler voltage manually. Both the heat resistor and the cooler are controlled via transistors switched by PWMs (Pulse Wide Modulation). A computer program was developed in C Sharp language to display the temperature over time measured by the sensors. The program also is used to adjust the constants K p , K i and K d of the controller and the temperature set point. The microcontroller firmware allows the system to operate in both open and closed loop modes. This work allows the student to learn in practice the control actions when the controller parameters are changed, contributing to improve the acknowledgment of Control Engineering.