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dsPIC30F2012 pulse oximeter 2X8 character display

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Signal to H-Bridge used to control IR Source On/OFF {1/0} Connects to T1IN of MAX232 device. Provides RS232 data output for system. SPI Serial Data Output pin that connects to the Microchip MCP4822 DAC device SPI Clock Output to Microchip MCP4822 SPI DAC device

SPI-DAC A Microchip MCP4822, Digital to Similarity Converter with SPI port and interior action connects the dsPIC30F soul to the buffer amplifiers. This emblem takes a 12 bit bid over the SPI attach. The SPI is falsehood for a 16 bit express transfer using a 7.3728MHz clock.

The round 12 bits of the language are aggregation and the bunk nibble are test bits. One of these essay bits is victimized to select one of the two DAC circuits in the pattern. DAC turnout A (pin 8 ) controls the grade of the IR Led piece DAC product B controls (pin 6), the RED emitter.

dsPIC30F2012 pulse oximeter 2X8 character display dsPIC30F2012 oximeter MCP4822 SPI DAC

HARDWARE

  • DIGITAL SIGNAL CONTROLLER
  • dsPIC30F2012
  • SYSTEM CLOCK
  • TIMER T1, TIMER T2
  • INPUT CAPTURE 1
  • SPI MODULE
  • UART MODULE
  • DIGITAL I/O
  • DIGITAL OUTPUTS, DIGITAL INPUT
  • LED DRIVER CIRCUIT
  • LED MODULE
  • H-BRIDGE
  • BUFFER AMPLIFIERS
  • SPI-DAC
  • DIGITAL CONTROL BITS
  • LIQUID CRYSTAL DISPLAY
  • R/*W INPUT
  • RS INPUT
  • ENABLE
  • COMMUNICATIONS PORT
  • SWITCH INPUT
  • LTF SENSOR
  • LED EMITTERS
  • MOUSE CABLE
  • VELCRO CONSTRUCTION

SOFTWARE

  • MEASUREMENT STRATEGY
  • LOWPASS FILTER
  • DIFFERENTIATOR (HIGH PASS FILTER)
  • DC TRACKING FILTER
  • PEAK FOLLOWER
  • HEARTBEAT/SpO2 CALCULATION
  • SIMPLE MOVING AVERAGE FILTER

files: dspic30f2012-pulse-oximeter-2×8-character-display.rar alternative link2 alternative link3

  1. Electronics Circuits