Block Diagram Of The Temp/Press Software - Philips M3001A Service Manual

Temperature and Invasive Blood Pressure (Temp/Press) measurement
• System CPU communication
• ADC controller and data acquisition
• Wave/numeric processing and filtering
• Pressure/temperature mode detection

Block Diagram of the Temp/Press Software

System CPU Communication
The pressure/temperature measurement section of the CPU contains a serial bi-directional
data communication link to the pressure/temperature modules of the system CPU.
The following data is transmitted to the system CPU:
• Pressure wave
• Temperature numeric
• INOP and error messages
• Status messages
The following data is received from the CPU:
• Control messages
All messages in both directions are secured by checksums.
ADC Controller and Data Acquisition
The data exchange between the A/D converter and the CPU is based on a serial
communication link. The calibration information is periodically refreshed to ensure proper
operation of the converter. The converter generates an interrupt each time new data is
40
Pressure / Temperature
Mode Detector
Wave Processing
ADC
&
Controller &
Filtering
Data Acquisition
System
CPU
Communication
Introduction to the Instrument