GalileoSky GLONASS User Manual
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GalileoSky GLONASS/GPS v5.1 (223) Userβs ManualGalileoSky Ltd Page 348.8 Connecting passenger flow registration Π¨2 sensorsThe Terminal supports connection of up to 16 Π¨2 sensors through 8 discrete-analog inputs (DAI) IN0-IN7(Contacts description).Connection order of one Π¨2 sensor through resistor to one of DAI of the Terminal.To connect 2 Π¨2 sensors to one of DAI use divisor on two resistors. Calculation principle is realized on voltagelevel change by sensors triggering.V β Power supply (battery/ vehicle power supply);R1, R2 β resistors;Π¨2_1, Π¨2_2 β Π¨2 passenger flow registration sensors.Connection order of 2 Π¨2 sensors through resistors to one of DAI of the Terminal.To set an input to count pulses from two sensors one may in the Configurator or by incfg0 3,2,X,X,Y,Ycommand (where Y β one sensor triggered; X β two sensors triggered).Parameter X and Y depending on supply voltage and R1, R2 resistors resistance assumes different values,for example:U(v)=12, R1=10k, R2=10k, then X=3500, Y=7921U(v)=12, R1=14k, R2=14k, then X=3000, Y=7000U(v)=24, R1=10k, R2=10k, then X=7000, Y=15842U(v)=24, R1=14k, R2=14k, then X=6000, Y=14000It is calculated according to the formula:π = ( 7 β π14 + π
1 β 0.001) β 1000; π = ( 14 β π28 + π
1 β 0.001 + 714 + π
1 β 0.001) β 1000;Attention! To avoid false operation by sensors connection and further operation of sensors, use stablevoltage power supply.Terminal operation result will be pulse fronts count from each sensor, i.e. when one person passes throughone door, total pulse number increases by 2. Correspondingly, to count passengers number passed throughthe sensors divide pulse count result by 2. |
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