Personal Electrocardiogram (ECG) Monitor Overview cost personal e

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

Personal Electrocardiogram (ECG) Monitor Overview cost personal e

Datasheet Thumbnail

Top Searches for this datasheet

Medical
Personal Electrocardiogram (ECG) Monitor
Overview cost personal electrocardiogram (ECG) monitor reduced through technologies that incorporate digital signal processor (DSP) into device. Benefits Reduces monitor costs incorporating functions into device monitors designed support real-time evaluation only with keypad, display, modem, external memory storage Supports eight probes
Ring
PERSONAL MONITOR USING DSP56F803/5
Phone Line Probe
DSP56803/5
Ext. Data Memory (Optional) SLIC (Optional)
Probe Probe Codec (Opt)
Performs time-multiplexed sampling Stores sampled signals using double-buffering technique Effective implementation three digital filters Out-of-the-box software components designed expedite time-to-market reduce development costs
Acoustic Signaling
LED1 Keyboard GPIO LED2
Freescale Ordering Information
Part Number DSP56F803 Product Highlights MHz, MIPS, CAN, SCI, SPI, ADC, PWMs, Quadrature Decoder, Quad Timer 31.5K Program Flash 512K Program Data Flash Data DSP56F805 MHz, MIPS, CAN, SCIs, SPI, ADC, PWMs, Quadrature Decoder, Quad Timer 31.5K Program Flash 512K Program Data Flash Data DSP56F827 MHz, MIPS, SCI, SPI, SSI, TOD, ADC, Quad Timer Program Flash Program Data Flash Data MC56F8345 MHZ, MIPS, 144KB Flash 12KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. MHZ, MIPS, 144KB Flash 12KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. MHZ, MIPS, 144KB Flash 12KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. MHZ, MIPS, 280KB Flash 20KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. MHZ, MIPS, 280KB Flash 20KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, Off-Chip Memory Expansion, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. MHZ, MIPS, 280KB Flash 20KB RAM, with SPI, SCI, ADC, PWM, COP, PLL, Decoders, Quad Timers, FlexCAN, Off-Chip Memory Expansion, MCU-friendly instruction set, Enhanced OnCE debug, temperature sensor. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 128-pin LQFP. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 144-pin LQFP. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 160-pin LQFP. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 128-pin LQFP. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 144-pin LQFP. Industrial (-40°C 105°C) Extended (-40°C 125°C) Temperature Ranges with GPIOs 160-pin LQFP. MCU-friendly instruction set, OnCE debug, external memory expansion, GPIO available 128-pin LQFP MCU-friendly instruction set, OnCE debug, on-chip relaxation oscillator, BootFLASH, external memory expansion, GPIO available 144-pin LQFP. Additional Information MCU-friendly instruction set, OnCE debug, on-chip relaxation oscillator, BootFLASH, external memory expansion, GPIO available 100-pin LQFP.
MC56F8346
MC56F8347
MC56F8355
MC56F8356
MC56F8357
Design Challenges personal monitor device capable saving human life. However, high price limits wider use. low-cost solution that incorporates digital signal processing into device help overcome this obstacle. Freescale Semiconductor Solution diagram page describes control digital processing aspects proposed solution. signal collected probes located skin near heart. signal then amplified read analog-to-digital converter (ADC). quality signal depends probe's location. This influence compensated using multiple probes different positions. number available channels limits number probes. DSP56F803/5 eight channels. used connect phone line across
SG2079-2
subscriber line interface circuit (SLIC). remaining seven pins connected probes. Three probes considered common set. samples taken sequentially, while third sampled consecutively. ADC's maximum sampling kHz. common sampling frequency signal leaving ample reserve perform time-multiplexed sampling. resolution 12-bit, also enough this purpose. Double-Buffering Storage Processing sampled signal stored using double-buffering technique: buffer storage second buffer data processing. After signal processing completed, filtering, detection abnormalities, optional data compression functions performed.
monitor commonly uses three filters: Notch 50/60 Band stop muscle interference High pass drift compensation DSP56F803/5's instruction adapted digital filtering, filters implemented effectively.
Evaluation Method simply described periodic pulse signal, wide range abnormalities been described simplify evaluation, difference between measured reference signals scaled current beat frequency should determined. This diagnostic evaluation able classify type disorder. output take forms: either healthy/diseased attribute continual, indicating variable degree membership diseased state. classify concrete disorder-for example, infarction
arrhythmia-additional criteria must used based recognition pulse shape detection parasitic Inasmuch theoretical number instructions sample MIPS/ Hz/3 channels 26000 instruction adapted digital signal processing, sufficient reserve exists perform additional disorder classification. Verify Disorder Using Modem Optionally, result classification verified physician using modem. connected phone line across SLIC, internal used input side,
external digital-to-analog converter (DAC) output side. connected SPI. Modem functions provided software. monitor's software should programmed proposed layering software interrupt usage displayed diagram below; Software Model. Individual tasks communicate using semaphores, which global status variables preventing others from barging during communication. Modem functions basic algorithms components Software Development (SDK) provided Freescale Semiconductor.
SOFTWARE MODEL
Input
Interrupt Probe Sample Buffer SLIC Sample Buffer
Core Algorithms
Signal Processing Filtering Abnormality Detection Compression Arbitrator State Prepare Modem Data Interrupt
Output
Sample from Buffer
GPIO Interrupt Read
Theoretical Foundations Assuming maximal frequency beats second 3-channel processing with sampling frequency process capable 1500 samples second pulses detected second required. Using infinite impulse response (IIR) filter with biquades, about 0.18 MIPS implementation) required preprocess signal. Detecting shapes pulses correlation with 128-point reference vectors repeating this operation pulse types, it's possible perform beats, channels, references computations correlation elements/128 elements vectors, representing about
MIPS under SDK. short, about MIPS will necessary basic evaluation, keeping reserve time scaling reference vectors. additional software modem will require about MIPS V.22bis implementation (SDK) about MIPS V.32bis implementation. Design Variants Whole monitors designed several variants: low-cost variant without modem external memory, with real-time evaluation only, full variant with keypad, display, modem, external memory storage. variant with external memory must based DSP56F805, because
general purpose input/output (GPIO) pins DSP56F803/5 shared with external address bus. GPIO pins used keyboard, signaling, and, optionally, display. keyboard display also connected serial communication interface (SCI). provide connectivity with personal computer, also used RS-232 interface. functionality proposed application design demonstrated evaluation modules DSP56F805EVM DSP56F803EVM without DAC. These boards contain required hardware except input analog, probes amplifiers, output SLIC.
SG2079-3
Development Tools
Tool Type Software Software Product Name CW568X MSW3SDK000AA Vendor Freescale Semiconductor Freescale Semiconductor Description CodeWarriorDevelopment Studio 56800/E Hybrid Controllers with Processor Expert (Metrowerks) Software infrastructure that allows development efficient, high level software applications that fully portable reusable across 56800/56800E family processors. CodeWarrior Software Development Tools 56800 (Metrowerks) 56F800 Demonstration Evaluation Module 56F803 Evaluation Module 56F805 Evaluation Module 56F827 56F8300 Developers Start Evaluation Module 56F8345, 56F8346, 56F8347, 56F8355, 56F8356, 56F8357
Software Hardware Hardware Hardware Hardware Hardware Hardware
CWDSP56800 56F800DEMO DSP56F803EVM DSP56F805EVM DSP56F827EVM MC56F8300DSK MC56F8357EVM
Freescale Semiconductor Freescale Semiconductor Freescale Semiconductor Freescale Semiconductor Freescale Semiconductor Freescale Semiconductor Freescale Semiconductor
Reference Online Journal Cardiology, World Encyclopedia, Disclaimer This document include details necessary completely develop this design. provided reference only intended demonstrate variety applications device.
Learn More: Contact Technical Information Center +1-800-521-6247 +1-480-768-2130. more information about Freescale products, please visit www.freescale.com.
Freescaleand Freescale logo trademarks Freescale Semiconductor, Inc. other product service names property their respective owners. Freescale Semiconductor, Inc. 2004. rights reserved. SG2079 12/2004
December2004

Personal Electrocardiogram (ECG) Monitor Overview cost personal e

Top Searches for this datasheet

Other recent searches