Figure 11. Oscillatory pressure curve

5.6.3

Mean Arterial Pressure

Mean arterial pressure (MAP) is a term used in medicine to describe an average blood pressure in an individual. It is defined

as the average arterial pressure during a single cardiac cycle.

At normal resting heart rates the MAP can be approximated using the more easily measured systolic pressure (SP) and diastolic

pressures (DP):

6 Technology and Medical Devices

Medical diagnostics are now made with high technology avoiding continuous visits to the hospital. Making remote control

LCDs can be used as an interface to communicate with the patient at different stages of the disease and generate alarms in

chronic situations. The application also has different ways to communicate with external devices such as Bluetooth, SD Card,

and USB.

7 LCD Driver

This application was developed using the MC9S08LL16 series. This device provides an LCD module that controls up to 192

segments and generates the waveforms necessary to drive an LCD. The LCD used for this application is a glass with 29 segments.

7.1 Modes of Operation and Power Supply

In the MC9S08LL16 series the LCD module can be configured to operate in Stop and Wait modes. The LCD module can operate

in stop2 with all clocks turned off.

connections between the LCD glass and the MCU.

Implementing a Glucometer and Blood Pressure Monitor Medical Devices, Rev. 1, 4/2010

11

Freescale Semiconductor, Inc.

Technology and Medical Devices