GPS
Tracker
User
Manual
8.1.4 Output
E.g. Control fuel-cut
8.1.5 Analog Input (PIN6/AD2)
8.1.5.1 Analog Input Application 1– Detect External Power Voltage
Input range
:
0-6V
Voltage Calculating Formula: input voltage=(AD*6)/1024
0x0377=>887(Decimal)=>(887*6)/1024=5.1972V(Voltage)
OxO2FB=>763(Decimal)=>(763*6)/1024=4.4707(Voltage)
Note:
Fuel level sensors supplied by our company are resistance-type sensors
with output resistance: 0-200Ù
(ohm).
For the circuit shown on above figure, if VCC is 12V, R should be 200Ù (ohm)
and if VCC is 24V then R should be 600Ù (ohm) to make the input range to AD1
or AD2 is 0-6V.
Below formula is for calculating the fuel percentage left for this fuel level
sensor:
AD value
Percentage Left = * 100%
1024* 2 – AD value
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Содержание VT390
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