How It Works; Circuit Principles - ADInstruments NIBP ML125 Series Owner's Manual

How it Works

The NIBP Controller is a microprocessor controlled pump, designed to
perform the cuff inflation and deflation sequence required for non-invasive
blood pressure measurement. Internal amplifiers and filters are provided to
allow monitoring of the cuff pressure and the subject's pulse so that systolic
and diastolic pressure can be determined.

Circuit Principles

To understand the internal operation of the NIBP Controller, refer to
Figure A–1, which shows a block diagram of the system.
Figure A–1
Block diagram of the
NIBP Controller
Pulse Range
26
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Status
indicator
Start/Stop
button
Cuff
Pump
Pressure
Transducer
Pulse Input
switch
Internal
cuff
Microprocessor
Slow release valve
Bandpass
filter
NIBP Controller Owner's Guide
Trigger
Out
Trigger
In
Pressure
Signal
Out
Pulse
Signal
Out