2-10
2.2.3.3 Principle
This module collects the IBP signal through the transducers, processes it and sends it to the main
board throgh the serial port.
IBP Signal Process Network
The IBP signal is the differential signal. After the common-mode filtering, the difference signal is
amplified by the difference amplifying circuit which changes the dual-end signal to the
single-end signal. After the low-pass filtering, the IBP signal is sent to the CPU System for
processing.
CPU System
Converting the analog signal obtained by the circuit to the digital signal;
Implementing the logical control of all parameter parts;
Implementing the data processing for the two parameters;
Implementing the communication with the CPU board.
Power & Signal isolate Circuit
Isolating the external circuits to ensure the safety of human body;
Supplying power for all circuits;
Implementing the isolation communication between the CPU System and the main board.
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