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Function Description
Babytherm 8004/8010
Quartz
The quartz generates a clock frequency of about 32 kHz. The microcontroller
uses this clock frequency to generate 16 kHz.
EPROM
The EPROM contains the software program of the Babytherm.
EEPROM
The device configuration data are stored in the EEPROM.
RAM
The RAM is a random-access memory.
Watchdogs
The watchdogs monitor the software program sequence of the microcontrol-
ler. The watchdogs are counter modules that are clocked by a separate
quartz.
An “EMERGENCY STOP” signal is generated if the microcontroller does not
reset the counter modules.
Driver modules
The driver modules amplify and regulate the signals for the actuator control.
Multiplexer and A/D converter
The multiplexer converts the +5 VLED voltage and the GoldCap voltage into
a digital data word. This data word is sent to the microcontroller for evalua-
tion.
1.2.6
WT Sensor PCB
The WT Sensor PCB carries the following subassemblies:
–
Receiver and transmitter for serial data transfer
–
Selection logics of test signals
–
Amplifier of skin-temperature measurement
–
Test circuit (36 °C skin temperature)
–
A/D conversion with multiplexer
Содержание Babytherm 8004
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