Steppers Encoders Home Appliance Controls Integrated with Voice Contro

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Steppers Encoders Home Appliance Controls Integrated with Voice Contro

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BR1560/D
Steppers Encoders Home Appliance Controls Integrated with Voice Control Smart Appliances Home Security Digital Telephone Answering Machine Engine Management Power Line Modem Servo Drives Automotive Control Electric Lawn Equipment Noise Cancellation Internet Appliances Phone Modems Magnetic Card Readers Security
Application Brief
Personal monitor using DSP56F803/5
Personal electrocardiogram (ECG) monitors devices capable rescue human life. However, their high price obstructs expansion. cost, single chip solution with Motorola 56F803 change that obstruction. proposed solution, shown Figure1, describes control digital processing aspects. signal collected probes located skin near heart. Then signal amplified read analog digital converter ADC, internal peripheral. quality collected signal depends probe location. This influence compensated using multiple probes different positions. maximal probe number limited number channels. 56803 channels, each multiplexed four pins. Eight sources analog signals connected all. connected phone line subscriber line interface circuit (SLIC). remaining seven pins connected probes. Three probes considered common set. samplings will taken time, third will sampled consecutively. Maximal sampling frequency used kHz, common sampling frequency signal there enough reserve perform time multiplexed sampling. resolution 12-bit, also enough this purpose
Probe DSP56803/5 Probe
Phone line
Ext. Data
Memory
SLIC
(optional)
Ring
Flash/RAM (optional)
Probe
(opt.)
Acoustic signaling
Digital Speakers
Keyboard
Voice Recognition Systems "Hands-free" Kits Digital Cameras Telecom Test Equipment Fuel Management Systems more.
GPIO
LED1 LED2
Figure Personal monitor using DSP56F803/5 sampled signal stored, using double buffering technique-one buffer storing, second buffer data processing. Following signal processing filtering, abnormalities detection, optional data compression. Usual monitors three filters: notch 50/60Hz, band stop 35Hz- muscle interference, high pass -drift compensation. Instruction DSP56F803 adapted digital filtering above mentioned filters implemented very effectively. simply described periodic pulse signal, wide range abnormalities described literature.1 simplify evaluation, determine difference between measured
Online Journal Cardiology, World Encyclopedia, 2000
reference signals scaled current beat frequency. This diagnostic able classify type disorder. output state- healthy diseased, continual- degree membership diseased state. classify concrete disorder-infarct arrhythmia, additional criteria must used based recognition pulse shape detection parasitic pulses.1 Inasmuch theoretical number instruction sample 40MIPS/500Hz/3chanel 26000 instruction adapted digital signal processing have sufficient reserve perform additional disorder classification
Input interrupt Probe sample buffer SLIC sample buffer
Core Algorithms Signal processing Filtering Abnormality detection Compression Arbitrator state Prepare modem data
Output interrupt Sample from buffer
GPIO interrupt Read
DSP56F80X CUSTOMER SUPPORT:
Technical Support:
dsp/support dsphelp@dsp.sps.mot.com 1-800-521-6274
Figure Software model result classification optionally verified physician modem. connected phone line SLIC, internal used input side external digital analog converter (DAC) used output. connected serial peripheral interface (SPI). Modem functions provided software. software monitor should programmed Metrowerks compiler integrated debugging environment only supported software tool present. Proposed layering software interrupt usage displayed Figure Individual tasks communicate using semaphores, global status variables. Modem functions basic algorithms components Software Development (SDK) provided Motorola. Assuming maximal frequency three beats second three-channel processing with sampling frequency 1500 samples second detect pulses second process required. Using filter with biquades, about 0.18 MIPS implementation) preprocess signal required. Detecting shapes pulses correlation with 128-point reference vectors repeating this operation pulse types, would perform three beats three channels, references computations correlation elements/ elements vectors, representing about MIPS under SDK. Summarily, expect about three MIPS 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. Whole monitors designed several variants starting with cost variant without modem external memory, real-time evaluation only, ending with full variant with keypad, display, modem external memory storage. Variant with external memory must based DSP56F805 because general purpose input/output (GPIO) pins DSP56F803 shared with external address bus. GPIO pins used keyboard, signaling, optionally display. Keyboard display connected also 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. This board contains required hardware except input analog part, probes amplifiers output SLIC. DSP56F80X evaluation module fully supported Metrowerks
Website:
www.motorola.com/ semiconductors/dsp
Literature Distribution Center Motorola:
1-800-441-2447
Other Inquiries:
Contact your Motorola sales representative authorized distributor
Disclaimer:
This sheet include details necessary completely develop this design. provided reference only intended demonstrate variety applications device
©2000 Motorola, Inc. Motorola registered trademark OnCE,
DigitalDNA DigitalDNA logo trademarks Motorola,

Steppers Encoders Home Appliance Controls Integrated with Voice Contro

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