AUTOMATED CONTROL SYSTEM FOR TRAM TRACK SLIP SWITCH Russian patent published in 2009 - IPC B60L1/00 B61L7/08 

FIELD: automatic control system, slip switches.

SUBSTANCE: proposed system comprises contact circuit voltage-to-low-voltage converter, capacitor, current limiting resistor, first and second voltage transducers, first switch, flip switch control receiver and route code transmitter, low-voltage electromagnet, permitted motion signaling device, second switch and temperature pickup. First input of switch is connected, via current limiting resistor, with positive terminal of voltage converter, while second input and first output are connected with capacitor positive pole. Its third input is connected with output of first voltage transducer, and fourth input is connected with slip switch control receiver output, said receiver receiving signal from route code transmitter. Second output is connected with slip switch low-voltage electromagnet via limit switch unit. Electromagnet output is connected, via said limit switch unit, with permitted motion direction signaling device. First input of second switch if connected with temperature pickup output, while its second input is connected with voltage converter positive pole, and third input is connected with second voltage transducer output, second voltage transducer input being connected with capacitor positive pole. Second switch output is connected with slip switch electric heater input. Note that capacitor, electromagnet and electric heater negative terminals are connected to common negative pole of voltage converter.

EFFECT: higher reliability.

4 cl, 1 dwg