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NIC2-2 · Network ID Camera
3. Theory guide
3.1 Block diagram
All functions of the ID camera are controlled by the microcontroller on the CPU board.
The controlling firmware is stored in a 512K FLASH memory. All inputs, outputs and drivers
for the motor are located on the CPU board. The CPU board is connected to the operator
display, exposure display, keyboard and motor sensors. All connectors for external commu-
nication are located on the CPU board..
3.2 Description of functions
3.2.1 Power supply system
The power system of the ID camera consists of:
• A mains input module featuring a mains cord connector built together with a mains filter
and a fuse holder.
• A mains switch mounted at the back of the camera.
• A switched power supply delivering 24V/50W.
3.2.2 CPU board
The CPU board features:
• A 16 bit microcontroller. Motorola 68HC16.
• 512K of FLASH memory where the program is stored. 16K is used to store a bootstrap
program used to download the main program and 16K is used to store the set-up of the
camera.
• 256K battery backed-up RAM memory used to store data while operating.
• One RTS.
• Three switched power converters for converting the 24V supply voltage to 5V, 12V and -
12V.
Triacon AB Sweden
Block diagram of Network ID Camera
9
Publication no. 201102
September 2003
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