Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Blood Pressure Meter Design Using Microchip’s Analog Devices and PIC24F Microcontrollers

Blood Pressure Meter Design Using Microchip’s Analog Devices and PIC24F Microcontrollers

A Blood Pressure Meter (BPM) is a non-invasive device used to measure blood pressure. This application note demonstrates the implementation of a digital blood pressure meter using Microchip’s MCP6N16 instrumentation amplifier and a PIC24FJ128GC010 microcontroller.

The MCP6N16-100 single Instrumentation Amplifier (INA) is used to condition the analog signal acquired from the Wheatstone bridge type of air pressure sensor. The overall INA gain is set at 101 V/V. The output signal of the MCP6N16 is split into two paths. One path, representing the cuff pressure, is connected to the ADC1 channel of the microcontroller. Another path is passed through a 2- pole active high-pass filter with cutoff frequencies of 0.48Hz and 4.8Hz, and a gain of 92. The high-pass filter is formed by one of the microcontroller’s internal operational amplifiers. The output of the high-pass filter, representing the oscillation signal, is sent to the ADC2 channel of the microcontroller.

 

More Articles to Read

Single-Sided USB Charger
Single-Sided USB Charger
A FPGA controlled RGB LED MATRIX for Incredible Effects – the Hardware
A FPGA controlled RGB LED MATRIX for Incredible Effects – the Hardware
Using Nanotimers to Reduce IoT System Power Consumption by an Order of Magnitude
Using Nanotimers to Reduce IoT System Power Consumption by an Order of Magnitude
Replace a microwave’s beeping with the Windows XP startup sound
Replace a microwave’s beeping with the Windows XP startup sound
A DIY Laser Scanning Microscope
A DIY Laser Scanning Microscope
Reverse-engineering the surprisingly advanced ALU of the 8008 microprocessor
Reverse-engineering the surprisingly advanced ALU of the 8008 microprocessor
ESP8266 LED lighting: QuinLED v2.6 PCB
ESP8266 LED lighting: QuinLED v2.6 PCB
Switching LVDS Graphics in a Laptop Computer
Switching LVDS Graphics in a Laptop Computer
Teleknitting: TV-based string art
Teleknitting: TV-based string art
DIY Bubble Machine
DIY Bubble Machine
Start your day with Nerf target practice!
Start your day with Nerf target practice!
Teardown of a Peaktech 6225A
Teardown of a Peaktech 6225A

Top




Shares