Indusi Balise

Small indusi balise, for inductive automatic train control – ATC (automatic train control), is used to transfer information from the rail to the train inductively base on resonant circuits. Purpose of indusi balise is to initiate logical process in autostop device that may go in tree directions:

  • Warning to the driver to reduce the speed of the train
  • Stopping of train with braking, if the driver doesn’t follow the procedure
  • Rapid unconditional braking if the train for whatever reason passes by the red signal

    Mala pružna baliza

    Locomotive part of autostop device produces alternating magnetic field of tree frequencies, 500,1000, 2000 Hz. When LPG comes over active indusi balise, of which passive oscillatory circuit has its own frequency similar to one of produced frequencies of LPG, there is a mutual inductive influence between LPG and indusi balise. Final result is reducing of resonant current in LPG and of that frequency that has active indusi balise. Decrease in resonant current is processed in logical units of AS to the level of executive command. This tree-frequent resonant technique uses frequencies on the principle:

    • Influence of 2000 Hz circuit immediately and unconditionally leads to braking
    • Influence of 1000 Hz circuit controls driver’s vigilance and speed control after certain time period

      Housing cast in AlSi12 and annealed in order to get corresponding magnetic characteristics. Cover which closes upper side of indusi balise made of polyester reinforced with glass fiber and has high softening and melting point. Ferrite core of rectangular diameter placed into housing of rectangular diameter is made of component glass mass. For fixing it is placed on non-magnetic pole and tighten with non-magnetic nuts, and then glued with special glue for protection of moisture and increasing of mechanical firmness. Coil is made of wire based on thermodure. Hole unit is locked on the inside of the housing which is filled with purr foam. Condensers of high demands and small dimensions are placed in separate chamber of housing which is closed with cover with the rubber sealing.

      Frequency setting area:1000 Hz1008-1012 Hz
      2000 Hz2008-2016 Hz
      Electricity reduction value:1000 Hz0 - 27 mA
      2000 Hz0 – 27 mA
      Q factor value:1000 HzQ ≥ 12 sa kabla
      2000 HzQ ≥ 24 sa kabla
      Value of insulation resistance 500V≥ 50 MΩ
      Dielectric firmness:2500 V50 Hz
      Temperature area- 40 °C do +85 °C
      Protection typeIP 67
      Environment influenceITC 60721
      Dimensions length x height x width644 x 130 x 300 mm
      Weight15 kg