gbo Stereodynator, Руководство по обслуживанию

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gbo Medizintechnik AG 2009 Version 1.0
The ultrasound probe’s connectors are connected to the power amplifier board. Each connector is connected
by a cable transmitting the ultrasound signal and an additional cable for the control signals, such as the probe
recognition signals.
1.4.4 Vacuum module
The Stereodynator uses vacuum function by the Venturi principle. This means that the unit blows the air
outwards through the special Venturi Electrodes. The fortune of this system is that there will be no fluids
inside the unit. All fluids which are aspirated inside the electrodes are blown out together with the air flow.
The 24V DC pump aspirates the air through an input filter with sound absorber. There are two outputs,
Channel I and channel II. Both channels can be opened or closed by a valve. So it is possible to use only
channel I, only channel II or both channels.
1.4.5 Bus board
The bus board is used to distribute several functions of the unit. It is connected to the backplane by USB bus.
On the Bus board the USB bus is distributed. The Bus board includes 2 USB hubs. All 3 current amplifiers
are connected by RS 232. This signals are generated by USB to serial converters. The current amplifiers are
directly connected to the bus board. The separated 5V for each of the current amplifiers are generated
separately on the bus board. The external USB connection is also one of the USB hub ports.
The microcontroller on the Bus board is also connected to a USB port. This microcontroller is used for
several functions:
- Communication to the operating software
- Control of the vacuum module
- Control of the Power supply of the current amplifiers
- Generation of the control signals for the ultrasound amplifier
- Control of the temperature sensors on the bus board
- Control of the relays for combination therapy on the connector board
- Control of the relays for endogenous/exogenous on the the connector board
- Detection of all code inputs on the connector board
- Control of the fan speed
- Control of the intensity regulator
- Control of the lighting ring around the intensity regulator
1.4.6 Connector board
On the connector board all 4 sockets for the electrodes are located. The sockets are soldered directly
to the board. To find out which type of electrode is connected, several code pins are present at the
sockets for the electrodes. A small microcontroller detects the state of the code pins and transmits
this information to the microcontroller at the bus board, which in turn sends this information to the
operating software.
1.4.7 Front plate with touch, display and backplane
The front plate is the user interface part for the touch screen and the display and allows user input and output.
The display is a 15” colour display with a resolution of 1024 x 768 pixels. The corresponding resistive touch
screen detects the input operations.
The PCB backplane is the carrier board for the single board PC. On this board the connections to the display,
the touch screen, USB, backlight inverter and loudspeakers are realised. The operating system is Windows
CE.