Product Principle 4-21
4.5.1 AC-DC module
AC-DC module changes the AC power to DC power to provide power for other assemblies by
DC-DC module. The module needs the indicating signal when AC power is off to control the circuit
of battery.
The specification of the ultrasound system is as follows:
AC-DC outputs 3 voltage, there are:
a) 12V: not less than 692W (DC-DC module 572W, PHV module 120W);
b) 5V_STB: the peak current is 2A when powering on, duration in 4ms; the average
valve is in 500mA when working normally.
c) Auxiliary Output :
The ultrasound system does not define the function of standby status when battery in, so it
is not necessary to have AC power off indicator. Take the reservation into consideration by
platforms.
The indicator when AC is in the place: reminds of the validity of AC input; it is used for
service personnel to decide the failure on the scene, available.
I2C interface: main control system obtains the work status of module. Available.
4.5.2 12V to 24V Control Board
The control board (12V to 24V) is only used to the electric lift and down product, which indicates
12V to 24V control board in figure 16 (12v to Control Board、LiftControl_Unit).
The voltage which is separated from 12V voltage is converted to 24V voltage to provide the power
for the motor control system. The out power of the 24V voltage is no less than 150W (the electric lift
and down module is 50W, each of two electrical magnets is 50W).
4.5.3 DC-DC board
Please refer to chapter 4.4.4.
4.5.4 PHV module
Please refer to chapter 4.4.5.
4.5.5 Battery module
Please refer to chapter 4.4.6.
4.6 User Interaction Unit
4.6.1 Control Panel
Control panel is the key assembly for user input; the basic functions are as follows:
Key scan: scan the input action of user.
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