Dräger Medical Babytherm 8004, Техническая документация инструкция

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Babytherm 8004/8010 Function Description
7.2.1 EEPROM The device configuration data are stored in the EEPROM.
The EEPROM is connected to the serial data bus of the microcontroller. The
EEPROM characterizes the machine (enabled options, serial number, etc.).
7.2.2 Microcontroller The microcontroller CS5532 has an internal 24-bit analog/digital converter,
amplifiers and filter modules.
7.2.3 LEDs Five LEDs indicate the following functions:
– Weight in “pounds”
– Weight in “ounces”
– Weight in “kilograms”
– “Lift” baby
– “Lower” baby
7.2.4 LEDs control Two integrated circuits amplify the output signals of the microcontroller. The
amplified output signals are applied to the LEDs and the 7-segment displays.
7.2.5 7-segment displays The six 7-segment displays show the following:
– Dots (upon power-on of the scales and during zero setting)
– Digits (empty weight and measured weight)
7.2.6 Quartz The quartz clocks the microprocessor with 22.1184 MHz.
7.2.7 +5 V voltage monitoring An IC (IC = integrated circuit) monitors the +5 V operating voltage.
If the voltage falls below or exceeds a specific value stored in the unit, the IC
sends a “reset” signal to the microprocessor. The microprocessor stops the
program and restarts it.
7.3 Front Panel PCB
The Front Panel PCB comprises the front membrane with the following keys:
– ON/OFF switch (start/standby)
– Weight in “Lb” and “oz” and “Kg”
– Lift the baby (reweigh)
– Place baby on bed (weigh)
The keys are directly connected to the input of the microcontroller.
7.4 Weighing cells
The weighing cell are very sensitive and accurate components. They gener-
ate an output voltage which is directly proportional to the weight. The weigh-
ing platform has four separate weighing cell on the same level, one at each
corner of the weighing platform. The individual weighing cells are connected
in parallel in order to“ add up” the weight measured at each corner. 10 VDC
operating voltage (+EXC and -EXC) is applied to the four individual weighing
cells. The output signals of the weighing cells are “+SIG” and “-SIG”.