SU1643277A1 - Device for warning repair teams of approaching train - Google Patents

Abstract

The invention relates to railway automatics devices and can be used in track devices for alerting repair crews and approaching a train. The purpose of the invention is to increase reliability. This goal is achieved by the fact that the clock inputs from the counter arrive at the trigger inputs and capture the incoming information from the contacts 2-5. The outputs of the triggered trigger are connected to the inputs of the corresponding And elements, the outputs of which are connected to the inputs of the digital memory elements, through the output of which the signal goes through the parallel code to serial converter and the delta modulator 8 to the detectors 15-17 and 19. 3 Il.

Description

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The invention relates to railway automatics devices and can be used in track devices to alert repair crews of a train approaching.

The purpose of the invention is to increase reliability.

FIG. 1 shows a block diagram of the device; in fig. 2 and 3 are the first and second parts of the speech message forming unit.

The device contains a voice message generation unit 1, the inputs of which can be connected via track contacts 2-5 (there can be more of them) to sources 6 and 7 of direct current. The output of block 1 is connected to the inputs of the adaptive delta modulator 8, and the output of the clock generator of the voice message generation unit 1 is connected to the second inputs of the trigger of the delay counter and the controlled frequency divider. The output from the controlled key of the adaptive delta modulator used as a demodulator, i.e. converting digital code signals into voice information. The output from the adaptive delta modulator 8 through a low-frequency band-pass filter 9 is connected to the dispatcher control line 10, equipped with a transmitter 11, and also to a line 12 with a low-frequency amplifier 13, the output of which is connected via line 14 to the - l m 15-17. The output of the filter 9 can also be connected to the input of a radio transmitter 18, the signals of which are received by a portable detector 19 located at one of the members of the track crew working in the danger zone 20.

The device also contains (FIGS. 2 and 3) a functional block diagram of an eight channel, which is used to notify on a multi-track route with heavy traffic in both directions, a clock generator 21, and each of channels I-VIII is connected to the trigger inputs 22.1 -22.8. the second inputs of which are connected by a common wire with the output of the first counter 23 for interrogating the state of the input flip-flops 22.1-22.8. The outputs of the triggers through the first element OR 24, one of the elements AND 25.1-25.8, the second element OR 26, the element 27 and the wire O are connected to the second electronic key 28 (FIG. 3) controlling the switching of the output circuits for connection to the input of the adaptive delta -module 8, the outputs of the triggers through separate for each of them the differentiating circuits 29.1-29.8, necessary for the formation of the leading edge of the signal pulse, are connected to the common installation inputs

the first counter 23, the counter 30 intended to form the address bus and frequency control signals, and the second counter 31 intended to form a pause and repeat warning phrases, for which its counting input is connected via wire r to the output of the first counter 23.

The output of the clock generator 21 is connected to the counting input of the counter 30 and through the wire a, the contacts of the first electronic key 32 and the diode D1 are connected to the counting input of the first counter 23. The output of the counter 30 is connected to the same input via the wire b and the diode D2.

The outputs of all the triggers 22.1-22.8 are separately connected to the first inputs of the corresponding elements And 25.1-25.8, to the second inputs of which the corresponding outputs of the counter 23 are connected. The output from each element And 25.1-25.8 is connected to the individual inputs of the digital memory elements 33.1-33.9, address inputs of which address bus 34 from the counter 30 are connected, and outputs via the data bus 35 to the first input of the parallel code to serial converter 36, to the second input of which the outputs 30 are connected via the address bus 34, acts second electronic switch 28 to the input of the adaptive delta modulator 8.

The output of the second counter-divider 31 through the wire n is connected to the second input of a separate element AND 27. The output of the second element OR 26 is also connected to the control input of the first electronic key 32.

The device works as follows.

When the train reaches the stage, the corresponding track relay is triggered and one of the contacts 2-5 connects the source of the 7 direct current beat to the corresponding input 1 p-8p of the voice message generation unit 1, i.e. One of the I-VIH inputs of the flip-flops 22. The counting inputs of the flip-flop 22 receive clock pulses from counter 23 and record the received information about the operation of the track relay, switching this flip-flop. From the output of the activated trigger 22.1, the signal through the corresponding differential circuit 29.1 (separating the leading edge of the pulsed signal) will go to the installation inputs of the counters 23, 30 and 31 to set them to the initial state. In parallel, the same signal will arrive at AND 25.1, associated with the output of the enabled trigger 22.1, and through the combining element OR

24 - to the first element AND 25.1, which permits reading from the digital memory element 33.5, in which the words Attention, train, are written in the digital code, for reproducing these introductory words before each message from the remaining memory elements. After the end of reading information from memory element 33.5 on a pulse arriving from counter 30, counter 23 enters the next state and accordingly, on a signal from an enabled trigger 22.1, reads digital information from a memory element in which it is recorded. from Moscow.

The signal from the element And 25.1 also goes to the logical element OR 26 and through a separate element I27 to the second electronic switch 28, which connects the output of the converter 36 to the first input of the adaptive delta modulator and disconnects from the input the last clock frequency generator that was used to set adaptive delta modulator 8 to the initial state.

The readable information from the memory elements is fed via the data bus 35 to the parallel code converter 36 to serial and then through the open electronic key 28 to the first input of the adaptive delta modulator 8, which converts the digital pulse sequence to low frequency analog signals.

The audio signals are filtered in a band-pass filter 9 and sent to the dispatcher control line 10, where they are reproduced by the detector 11, the same signals after amplification in the amplifier 13 are sent to the line 14 for the detectors 15-17 and / or transmitted by radio 18 to the detector 19 which must be at one of the team members working in the danger zone 20.

Due to the presence of counter 31, all elements of the system are re-triggered and, after a fixed pause, the previously reported information is reproduced anew, which improves the clarity of the information and ensures its unequivocal understanding by all persons who are in the danger zone or should be informed.

Claims (1)

Invention Formula A device to alert repair Approaching train crews comprising train location sensors associated with a rail line, a clock generator and a transmitter connected via a communications line with detectors located at the work site, characterized in that, with a view to improving reliability; it is equipped with meters, the counting input of one of which is connected to the generator output clock 4i.- oy, differentiating chains, AND, OR elements, key elements, delta modulator, memory elements, triggers, parallel code converter in serial, one of the inputs of which is connected to one of the outputs of the first counter, the other to the output of the memory elements, and the output to one of the inputs of one of the key elements, the other input of which connected to another you code of the first counter, the third output of which is connected to the counting input of the second counter, some outputs of which are connected to one of the inputs of the first AND elements, other outputs to the counting input of the third counter and one of the trigger inputs, the other input of each of which is connected to the outputs of the said sensors of the location of the train, and the output to the other input of the first elements AND and the inputs of one of the OR elements directly, and through differentiating chains, to the inputs of the installation in the zero state of the counters, the outputs of the first AND elements are connected to the second inputs of the memory elements and the inputs of the second OR element, the output of which is connected to one of the inputs of the second element AND one of the inputs of the second key element, the second input of which is connected to the output of the clock generator, and the output to the counting input of the second counter, while the output of the third counter is connected to the second input of the second element I, the output of which is connected to the third input of the first key element whose output is connected to one of the inputs of the delta modulator, the other the input of which is connected to the output of the clock frequency generator, and the output is connected to the said transmitter. deja g FIG. 2 To LPN