SU1602789A1 - Track circuit - Google Patents

Abstract

This invention relates to means for automatically controlling the position of rail vehicles. The purpose of the invention is to expand the functionality by controlling the passage of the inhibit signal. The rail circuit has the first 1, intermediate 2 and second 3 rail lines with power sources, trigger 4 and the AND-HE element 5 connected via integrator 6 and selector 7 according to the signal level with the recorder 8. 1 Il.

Description

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This invention relates to means for automatically controlling the position of rail vehicles.

The purpose of the invention is to expand the functionality by controlling the passage of the inhibit signal.

The drawing shows the functional circuit of the track circuit.

The rail circuit contains connected by its inputs to the intermediate and other rail lines 2, 1 and 3, respectively, trigger 4 and the AND-NE element 5, the output of which is connected to the recorder 8 through the integrator 6 and the selector 7.

The device works as follows.

In the initial state, nonzero potentials of the first threads of non-shunted rail lines 1 and 2 are present on the first and second inputs of the AND-NE element 5, the third input of which contains zero potential from the output of trigger 4, one and the other inputs of which have non-zero potentials supplied from first strands of unstretched rail lines 2 and 3.

As a result, at the output of the element IS-HE 5, a zero potential is realized, which through the integrator 6 and the selector 7 is applied to the recorder 8, which signals the normal state of the train situation.

When rolling stock by rail 1 at the first input of the element IS-HE 5, there appears a zero 1 potential which does not change the zero output potential of this element.

Upon further movement of the rolling stock following the rail line 1, the rail line 2 is shunted, having a length not less than the car length, and zero potentials on all three inputs of the AND-NOT element 5 are realized to a non-zero potential for its output until the rail line 3 is shunted. However, this non-zero the potential does not change the state of register 8 because of the delay calculated for the shunting time of the rail line 2 until the shunting of the rail line 3 and realized as integrator 6 and selector 7..

Shunting of the rail line 3 causes a change in the state of trigger 4 to the opposite, and a non-zero potential arising at its output appears at the third input of the AND-HE element 5, the first and second inputs of which have zero potentials. As a result, the output potential of the element IS-NE 5 on the recorder 8 is zero potential.

With the release of the intermediate rail line 2, the resulting non-zero potential at the first input and the zero potential at the second input return

The trigger 4 returns to its original state, and at the third input of the element AND-NE 5 the zero potential again arises, which together with the non-zero potentials at the first and second inputs retain the zero potential of the output of the element AND-HE 5 and the recorder 8.

If the rolling stock stopped at the rail line 3 and the next rolling stock shunted the rail line 1, on the first, second and third

the inputs of the element AND-NOT 5, respectively, will result in zero and non-zero potentials, and at the output of the element AND-NOT 5, a potential of zero will remain.

If, in the described situation, the next rolling stock does not stop within the rail line 1 due to a failure of technical means of control or a violation of the rules of operation and lands the rail line 2, the trigger 4 will be transferred to the opposite state and the zero potential of its output will occur on the third input element AND-NOT 5, on the first and second inputs of which there are zero potentials, which will lead to the appearance at the output of the element AND-NOT 5 non-zero potential, which

after some time, determined by the delay of the integrator 6 and the selector 7 on the level, will be applied to the registrar 8, which signals a violation of the train situation.

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Claims (1)

Invention Formula A rail circuit containing power sources connected to one intermediate and another rail line, and a recorder, characterized in that, in order to expand its functionality by controlling the prohibitory signal, it is equipped with an integrator, a signal selector by level, trigger and an AND element -NOT which exit through 5 the integrator and the signal selector are connected to the recorder by level, and the first and second inputs are respectively with one of the threads of the first and intermediate rail lines, the second threads of which are interconnected, and the third input of the NAND element 0 is connected to the trigger output, the first input of which is connected to the second input of the NAND element, and the second to the first thread of the second rail line, the second thread of which is connected respectively to the second threads of the first and intermediate rail five lines.