Mindray VS8, Руководство по обслуживанию

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VS 9/VS 8 Vital Signs Monitor Service Manual
2-7
The SpO
2
board collects SpO
2
signals, performs algorithm processing, and uploads the
measurement results to the main board.
External Modules
The monitor supports the external body temperature module.
The body temperature module developed by Mindray comprises an isolated power board,
body temperature measurement board, and probe. The body temperature measurement
board collects body temperature signals, performs algorithm processing, and uploads the
measurement results to the main board.
2.4 Power Architecture Diagram
ACDC module
Connect three cells in
serial, and two of the
serials in parallel
Battery
Wireless charging
Charging IC
BUCK-BOOST
BUCK
VBUS
Backup battery
12V
5V
3.3V
Main control (processor,
Bluetooth, Wi-Fi, external
USB connector, recorder,
LCD display)
LCD backlight
Recorder power drive
Alarm lamp circuit: red and yellow
Isolated parameter module:
SpO
2
Quick body temperature/OEM body temperature
Non-isolated parameter module:
NIBP
CO
2
module
15V
LDO
Power
management
MCU
3.3V
Analog
switch
Figure 3 Power Architecture Diagram
Main unit battery: VS9 adopts the smart battery, while VS8 adopts the ordinary battery
with the output voltage of 9.6 V-12.3 V.
Backup battery: smart battery.
AC-DC output is 15 V, therefore, the power supply with 40W output power and 15V
output voltage is adopted.
The range of VBUS is 9.6 V-15 V, which supplies power to the recorder and the isolated
parameter parts (SpO
2
and rapid body temperature module).
A 12 V power supply is used to power the LCD backlight, alarm lamp, CO
2
module, and
NIBP.
5 V and 3.3 V power supplies are used to power the recorder, USB peripherals, and LCD.
An internal lower voltage rail powers the minimum system of the main board and
minimum system of the PFGA board;