SU1595729A1 - Apparatus for warning train approach to man-made structures - Google Patents

Abstract

The invention relates to railway automation. The purpose of the invention is to increase reliability. This is achieved by the fact that the generator 16 of the control signals, the input connected to the output of the element And 13, and the output - to the element OR 8, allows control of the operation of the signaling device 9. 2 Il.

Description

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 31595729

The invention relates to railway automation and can be used in signaling devices and for bringing trains to artificial structures, such as tunnels. bridges.

The purpose of the invention is to increase reliability.

Fig, 1 shows a block diagram of the proposed device ;; figure 2 - timing diagrams of the generators.

The device for alerting the train's approach contains track circuits 1 and 2 of the even and odd approach, respectively, connected to the track circuits of the even and odd approach of the warning zone 3, receivers 4 and 5 of the even and odd train approximation, generators 6 and 7, through the logical element OR 8 associated with acoustic and optical warning devices 9, logical elements NOT 10 and 11, logical elements AND 12-14., button 15, generator 16 control signals. The output of the generator 16 control signals is connected to the first input of the logic element OR 8, and the generator input 16 of the control signals is connected to the output of the first logic element AND 13. The first inputs of the three elements 12-14 are connected to the button 15. The second inputs of the second and third The logical elements And 12 and 14 are connected to the outputs of the receivers 4 and 5 of the even and odd approximation of the train. The other outputs of these receivers 4 and 5 through the logical element NOT 10 and 11 are connected to the second and third inputs of the first logical element AND 13, its output through the generator 16 control signals is connected to the third input of the logical element OR 8. ,

In Figure 2, the diagram represents a 2a form of the signal current of the generator 16 of odd approximation signals; diagram 26 — form; the signal current of the generator 6 even-approximation signals; Diagram 2c is a waveform of the total 50 current on the generator 7 control signals.

7 The device operates as follows.

Normally, notification devices are turned off. Before starting work in the notification zone, it is necessary to press the button 15, thereby from the front-line contact30

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This button signal 1 is fed to one of the inputs of all three elements AND 12-14. After pressing the button 15, the notification device can operate in one of the following three modes: control mode; even train approach mode; Odd train approach mode.

In the control mode (track circuits 1 and 2 are free from trains) at the outputs of receivers 4 and 5 there are signals O, which arrive at the inputs of elements And 12 and 14 and keep them in the closed state. The consequence of this is the off state of the generators 6 and 7. The same signals O from the outputs of receivers 4 and 5 are fed to the inputs of the HE elements 10 and 11, respectively, from the outputs of which, after inversion, signals 1 are fed to the inputs of the And 13 elements. From the output of the last signal 1 is fed to the input of the generator 16 control. Signals, which begins to generate signals of a given frequency. These signals, having passed through the OR element 8, are transmitted to the alert devices 9 located in the alert zone 3.

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When the rail circuit 1 is occupied by an even approximation from the receiver output 4, the signals arrive at the inputs of the element HE 10 and the elements 12. From the output of the element HE 10 after the inver- tion; This signal O arrives at the input of the element And 13 and closes this element. The consequence of closing element 13 is to turn off the oscillator. 16 control pulses. The same signal - 1, arriving at the input of the element And 12, opens it. Signal 1 from the output;. element And 12 is fed to the input of the generator 6 signals of an even approximation and includes it. The generator 6 generates pulses of a given frequency, which, having passed through the element OR 8, are transmitted to the warning devices 9.

In the odd train approximation mode, the circuit operates similarly to the specified even approximation mode. In the on state, there is an odd approximation signal generator 7. Upon completion of the work in the notification zone, button 15 is exhausted, thereby removing signal 1 from the inputs of the elements 12–14 and the warning device are turned off.

Claims (1)

Invention Formula A device for announcing the approach of a train to artificial structures, containing one and another receivers connected to the rail lines of one and another approaching train respectively, one of the outputs of each of which are connected respectively to the inputs of one and the other generators, the outputs of each of which are connected to one and the other inputs of the OR element, the output of which is connected to a signaling device, and a power source, characterized in that, in order to increase safety by providing a control mode p boats, it is equipped with podpppppppp The connected inputs to the second outputs of the receivers are one and the other elements NOT, And elements, the first and second of which are switched on by the first outputs of the one and the other receivers, and the inputs of the one and the other mentioned generators, respectively, with a button connected by the output to the third input of the said element OR by the generator of control signals, the input of which is connected to the output of the third element AND, one and the other inputs of which are connected to the outputs respectively, one and the other element is NOT, and the third input and the second inputs of the first and second elements AND are connected to the power source through the indicated button.