The Experts below are selected from a list of 198 Experts worldwide ranked by ideXlab platform

Piotr Dudek - One of the best experts on this subject based on the ideXlab platform.

  • implementation of simd vision chip with 128 spl times 128 array of Analogue Processing elements
    International Symposium on Circuits and Systems, 2005
    Co-Authors: Piotr Dudek
    Abstract:

    This paper presents the latest implementation of the SIMD current-mode Analogue matrix processor architecture. The SCAMP-3 vision chip has been fabricated in a 0.35 micrometre CMOS technology and comprises a 128/spl times/128 general-purpose programmable processor-per-pixel array. The architecture of the chip is overviewed and implementation issues are considered. The circuit design of the Analogue register is presented, the layout of the Analogue Processing element is discussed and the design of control-signal drivers and readout circuitry is overviewed.

  • a 39 spl times 48 general purpose focal plane processor array integrated circuit
    International Symposium on Circuits and Systems, 2004
    Co-Authors: Piotr Dudek
    Abstract:

    This work presents the implementation of a general-purpose programmable vision chip, with a 39/spl times/48 SIMD processor-per-pixel array, fabricated in a 0.35 /spl mu/m CMOS technology. The chip employs Analogue Processing elements to achieve cell density of 410 cells/mm/sup 2/. The array operates at 1.25 MHz with power consumption of 12 /spl mu/W/cell and executes low-level image-Processing algorithms in real time. Chip architecture, circuit and layout design issues are discussed. Experimental results are presented.

  • A Processing Element for an Analogue SIMD Vision Chip
    2003
    Co-Authors: Piotr Dudek
    Abstract:

    This paper describes an Analogue Processing element (APE) suitable for high-density image sensor/processor array integrated circuits. The design trade- offs between area, power consumption, speed and accuracy are discussed and the architecture of the APE is presented. The design follows a switched-current "Analogue microprocessor" approach while the implementation of arithmetic operations is simplified by introducing a register- based current division method. The circuit has been implemented in a 0.35µm single-poly 3-metal layer CMOS technology. The APE measures below 50µm×50µm, operates with a 1 MHz clock and consumes less than 12µW of power (simulation results).

  • ISCAS (6) - Implementation of SIMD vision chip with 128/spl times/128 array of Analogue Processing elements
    2005 IEEE International Symposium on Circuits and Systems, 1
    Co-Authors: Piotr Dudek
    Abstract:

    This paper presents the latest implementation of the SIMD current-mode Analogue matrix processor architecture. The SCAMP-3 vision chip has been fabricated in a 0.35 micrometre CMOS technology and comprises a 128/spl times/128 general-purpose programmable processor-per-pixel array. The architecture of the chip is overviewed and implementation issues are considered. The circuit design of the Analogue register is presented, the layout of the Analogue Processing element is discussed and the design of control-signal drivers and readout circuitry is overviewed.

  • ISCAS (5) - A 39/spl times/48 general-purpose focal-plane processor array integrated circuit
    2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512), 1
    Co-Authors: Piotr Dudek
    Abstract:

    This work presents the implementation of a general-purpose programmable vision chip, with a 39/spl times/48 SIMD processor-per-pixel array, fabricated in a 0.35 /spl mu/m CMOS technology. The chip employs Analogue Processing elements to achieve cell density of 410 cells/mm/sup 2/. The array operates at 1.25 MHz with power consumption of 12 /spl mu/W/cell and executes low-level image-Processing algorithms in real time. Chip architecture, circuit and layout design issues are discussed. Experimental results are presented.

Ferran Reverter - One of the best experts on this subject based on the ideXlab platform.

  • Seat Occupancy Detection Based on a Low-Power Microcontroller and a Single FSR
    MDPI AG, 2019
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper proposes a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which is arranged in the seat of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller unit (MCU) without using either an Analogue Processing stage or an Analogue-to-digital converter. Two versions of such a MCU-based circuit are presented: one to prove the concept of the measurement, and another with a smart wake-up (generated by the sudden resistance change) intended to reduce the energy consumption. The feasibility of the proposed measurement system is experimentally demonstrated with subjects of different weight sitting at different postures, and also with objects of different weight. The MCU-based circuit with a smart wake-up shows a standby current consumption of 800 nA, and requires an energy of 125 µJ to carry out the measurement after the wake-up

  • Microcontroller-Based Seat Occupancy Detection and Classification
    Proceedings, 2018
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or backrest of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller without using either an Analogue Processing stage or an Analogue-to-digital converter, thus resulting in a low-cost, low-power, compact design solution.

Ernesto Sifuentes - One of the best experts on this subject based on the ideXlab platform.

  • Seat Occupancy Detection Based on a Low-Power Microcontroller and a Single FSR
    MDPI AG, 2019
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper proposes a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which is arranged in the seat of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller unit (MCU) without using either an Analogue Processing stage or an Analogue-to-digital converter. Two versions of such a MCU-based circuit are presented: one to prove the concept of the measurement, and another with a smart wake-up (generated by the sudden resistance change) intended to reduce the energy consumption. The feasibility of the proposed measurement system is experimentally demonstrated with subjects of different weight sitting at different postures, and also with objects of different weight. The MCU-based circuit with a smart wake-up shows a standby current consumption of 800 nA, and requires an energy of 125 µJ to carry out the measurement after the wake-up

  • Microcontroller-Based Seat Occupancy Detection and Classification
    Proceedings, 2018
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or backrest of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller without using either an Analogue Processing stage or an Analogue-to-digital converter, thus resulting in a low-cost, low-power, compact design solution.

Rafael Gonzalez-landaeta - One of the best experts on this subject based on the ideXlab platform.

  • Seat Occupancy Detection Based on a Low-Power Microcontroller and a Single FSR
    MDPI AG, 2019
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper proposes a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which is arranged in the seat of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller unit (MCU) without using either an Analogue Processing stage or an Analogue-to-digital converter. Two versions of such a MCU-based circuit are presented: one to prove the concept of the measurement, and another with a smart wake-up (generated by the sudden resistance change) intended to reduce the energy consumption. The feasibility of the proposed measurement system is experimentally demonstrated with subjects of different weight sitting at different postures, and also with objects of different weight. The MCU-based circuit with a smart wake-up shows a standby current consumption of 800 nA, and requires an energy of 125 µJ to carry out the measurement after the wake-up

  • Microcontroller-Based Seat Occupancy Detection and Classification
    Proceedings, 2018
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or backrest of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller without using either an Analogue Processing stage or an Analogue-to-digital converter, thus resulting in a low-cost, low-power, compact design solution.

Juan Cota-ruiz - One of the best experts on this subject based on the ideXlab platform.

  • Seat Occupancy Detection Based on a Low-Power Microcontroller and a Single FSR
    MDPI AG, 2019
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper proposes a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which is arranged in the seat of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller unit (MCU) without using either an Analogue Processing stage or an Analogue-to-digital converter. Two versions of such a MCU-based circuit are presented: one to prove the concept of the measurement, and another with a smart wake-up (generated by the sudden resistance change) intended to reduce the energy consumption. The feasibility of the proposed measurement system is experimentally demonstrated with subjects of different weight sitting at different postures, and also with objects of different weight. The MCU-based circuit with a smart wake-up shows a standby current consumption of 800 nA, and requires an energy of 125 µJ to carry out the measurement after the wake-up

  • Microcontroller-Based Seat Occupancy Detection and Classification
    Proceedings, 2018
    Co-Authors: Ernesto Sifuentes, Rafael Gonzalez-landaeta, Juan Cota-ruiz, Ferran Reverter
    Abstract:

    This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or backrest of the chair, that undergoes a sudden resistance change when a subject/object is seated/placed over the chair. In order to distinguish between a subject and an inanimate object, the system also monitors small-signal variations of the FSR resistance caused by respiration. These resistance variations are then directly measured by a low-cost general-purpose microcontroller without using either an Analogue Processing stage or an Analogue-to-digital converter, thus resulting in a low-cost, low-power, compact design solution.