SU1652157A1 - Device for recognizing the type of moving railway stock - Google Patents

Abstract

The invention relates to railway transport and can be used in automated processes for the management of railway transport. The purpose of the invention is to increase credibility. When a mobile unit passes over track sensor 1, the passage of each wheelset is recorded and pulses are output at the inputs of the second trigger 21 and the third counter 17, as well as at the second input of the And 19 element. The third counter 17 counts the number of pulses produced by the sensor 1. Comparative blocks 13 and 14 compare the codes arriving at their first and second information inputs. When the first and second axial distances are traversed over the sensor 1, their numerical equivalents are entered into registers and then rewritten into the fourth and fifth registers 15 and 16 and the data values are compared in block 13. Depending on the logical comparison results, a code is generated that is written in memory 12 and is used for processing information. 1 il. with s with

Description

The invention relates to railway transport, in particular, to devices that perform automatic recognition of the type of a mobile unit of a train, and can be used in automatic processes for controlling railway transport.

The purpose of the invention is to increase credibility.

The drawing shows a functional diagram of the proposed device.

The device contains a track sensor 1 and a clock pulse generator 2, which produces high frequency pulses for filling the clock pulses, which occurs in the first and second elements 3 and 4.

The first and second counters 5 and 6 pulses are connected to the information inputs of the first and second registers 7 and 8, respectively, and the third register of 9 pulses is connected to the information inputs

about sd

HS

SL

one

first and second blocks 10 and 11 of memory. The third memory block 12 is connected by the first and second information inputs to the outputs of comparison units 13 and 14, the first inputs of which are connected respectively to the outputs of the fourth and fifth registers 15 and 16. The third pulse counter 17 is connected to the output of the first trigger 18 whose output connected to the first input of the element I 19, and the installation input to zero is associated with the installation input of the fourth counter 20 and the second trigger 21 and is connected to the output of the second memory block 11. The element OR 22 is connected by one input via delay lines 23 and 24 to the forward output of the second trigger 21, and the second input via delay lines 25, 26 and 27 to the inverse output of the second trigger 21.

The device works as follows.

In the initial state, in the absence of a moving unit moving along the rails, the signals of the direct outputs of the first and second triggers 18 and 21 correspond to the zero level, and at the inverse output of the second 21 trigger, the signal corresponds to the single level.

The contents of the first 5, second 6, third 17 n and fourth 20 counters are zero, the signals at the outputs of the first and second blocks 13 and 14 are zero. The third block 12 contains constants defined by the logical ratio of the length of the previous and subsequent axial distances, taking into account the number of comparison. In this case, all bits of the third register 9 are in a single state, and in the first memory block 10 codes are stored that characterize the possible states of the bits of the register 9 as each of the installed types of mobile units passes through, in the second memory block 11 hardware codes characterizing the possible states of the fourth counter 20 and register 9 during the passage of each of the established types of mobile units.

With the passage of the first and subsequent wheelsets of the moving train over track sensor 1, the latter produces pulses arriving at the inputs of the second trigger 21

five

0

five

0

five

0

five

0

five

and the third counter 17 and the second input element And 19.

The third counter 17 counts the number of pulses produced by the track sensor 1. When the third wheel pair passes over the track sensor 1, the output of the third counter 17 produces a signal that enters the input of the first trigger 18 and transfers the last positive edge to one state. The signal from the high level from the output of the first trigger 18 is fed to the first input of the element 19, opening it, as well as to the second control inputs of the blocks 13 and 14. Thus, the comparison blocks 13 and 17 can make a comparison of the codes received on their first and second information the inputs are only after the passage of the third wheel pair above track sensor 1, when a high signal level is generated at the output of the first trigger 18.

For each pulse arriving from track sensor 1, the second trigger 21 is transferred to the state opposite to the previous one, in particular, by the first pulse, it is set to the state opposite to the initial one, while at its direct output there is a high level signal arriving at the first input of element 3, to the synchronous input of the first register 7, and at the inverse output a low level signal arriving at the first input of element 4.

The duration of the pulses produced on the forward and inverse outputs of the second trigger 21 corresponds to the lengths of the axial distances of the mobile unit passing over the track sensor 1, and the duration of the pulses produced on the forward output of the trigger 21 corresponds to the length of the odd (first, third and t . e.) the center distance, and the duration of the pulses produced at the inverse output of the trigger 21 corresponds to the length of the even (second, fourth, etc.) center distance.

The generator 2 produces high-frequency pulses, which are fed to the second inputs of elements 3 and 4.

So with the passage of the first center distance above the track sensor 1 at the direct output of the trigger 21

a high level signal is generated, then the pulses from generator 2 through open element 3 arrive at the counting input of the first counter 5. The last shows the numerical equivalent of the length of the first center distance, which arrive at the information inputs of the first register 7 and are entered into the last negative the front of the pulse produced at the direct output of the second trigger 21. Thus, after passing the second wheel set of the mobile unit over track sensor 1, the first register 7 will store numbers oic equivalent length of the first interaxial distance.

With the passage of the second wheelset of the mobile unit over track sensor 1, the second trigger 21 is thrown into the opposite state, in which at its inverse output a high level signal is generated, which opens element 4. The pulses from the generator 2 through the open element 4 arrive at the counting input the second counter 6. The last readings are the numerical equivalent of the length of the second center distance, which is fed to the information inputs of the second register 8 and is entered into the latter by a negative th front of the pulse produced by the track sensor 1 while passing over it the third .wheel pair. Thus, after passing over the track sensor 1 of the third wheel pair of the mobile unit, in the second register 8 there will be stored a numeric equivalent of the length of the second center distance.

The contents of the first register 7 are fed to the information inputs of the fourth register 15 and the comparison block 14, and the contents of the second register 8 are fed to the information inputs of the fifth register 16. The numerical equivalents of the first and second axial distances of the mobile unit from the outputs of the first and second registers 7 and 8 respectively, the fifth and fourth registers 15 and 16 occur along a negative front delayed by line 27 of the first pulse generated at the inverse output of the second flip-flop 21 and corresponding to the passage in orogo mezhose0

five

0

five

0

five

0

five

0

over the travel sensor 1, the delay time effected by the delay line 27 is determined by the time required for recording the readings of the second counter 6 into the second register 8. The contents of the fifth and fourth registers 16 and 15 are fed to the first and second inputs of the block, respectively 13 comparisons. The latter compares the numerical equivalents of the first and second center distance over the delayed by line 26 signal to write the values of the first and second registers 7 and 8 to the fourth and fifth 15 and 16 registers, respectively, to the first control inputs of the block 13.

In this case, a high level enable signal is present at the second control inputs of block 13. The length of the delay, effected by line 27, is determined by the time required to enter the information in the registers. Thus, after the passage of the first and second axial distances over the track sensor com 1, their numerical equivalents are recorded in registers, then after a time determined by line 27, these numeric equivalents are rewritten in the fourth and fifth 15 and 16 registers, and the comparison these values in the comparison block 13 after some time, determined by the line 26.

Depending on the results of the logical comparison, a certain code is generated at the output of block 13, and if the first, center distance is greater than the second, then code 100 will be generated, if the first center distance is less than the second, then code 001 will be generated and if the first and second axes the distances are equal, then code 010 will be generated. This code, together with the source code (000) of the comparison unit 14, goes to the information inputs of the third unit 12.

After passing over the traveling sensor 1 of the third wheelset of the mobile unit, the contents of counter 20 will be equal to (0001) and this code, meaning that the first and second axle spacing is compared (code of the comparison number) is also fed to the input of block 12.

71

During the passage of the fourth wheel pair by the track sensor 1, the long pulse generated at the forward output of the trigger 21 corresponds to the length of the third center distance of the mobile unit, and the contents of the first counter 5 is a numerical equivalent of the length of the third center distance that is It is transferred to the first register 7 by the negative edge of the pulse produced at the single output of the second trigger 21. The contents of the first register 7 are fed to the second information inputs of the second block 14, to the first inputs cerned receives the contents of the fifth register 16, which is a numerical equivalent of a second interaxial distance or length.

Block 14 compares the numeric equivalents of the second and third center distance over a negative edge of the pulse 24 delayed by the line 24 to the first control inputs of block 14. At the same time, a high level resolution signal is present at the second control inputs of block 14. Depending on the comparison results, one of the codes 100, 001, 010 is generated at the output of block 14.

Code 100 is generated if the second center distance is greater than the third, code 001 is generated if the second center distance is less than the third, and Ko 010 if they are equal. From the outputs of block 14, the comparison code of the second and third axial distances of the mobile unit enters the inputs of block 12. In this case, the contents of counter 20 will be equal to two, and this code from its - zy- output, meaning that a second comparison has occurred (the number of equivalents of the second and third center distance) is fed to the input of block 12, in which each code value of the number and comparison result (the address code of the memory cell corresponds to the list of types of mobile units that have this code, while in the selected memory cellin those categories that identify

the code of the number and the result of the comparison, corresponding to the code of the address of the given memory cell, are stored in units, and in the remaining bits are written well

eight

Q

50

„, °

five

five

whether. Thus, in each cell there is a binary word that uniquely identifies those types of cars and locomotives to which the code of the number and the comparison result corresponding to the given memory cell belongs.

When blocks 13 and 14 and the fourth counter 20 arrive at the input of the third block 12 of the number code and the comparison result, a code appears in its output in which the unit may be present in one or more of its bits. In the first case, the recognition of the type of mobile unit will occur according to the first code of the number and the result of the comparison. In the second case, the recognition of the type of mobile unit will occur and it will continue on the following codes of the number and the result of the comparison, until the output code contains units in only one of its bits.

The output code of block 12 is supplied to the information inputs of the register 9.

Entering the output code of block 12 into the register occurs via the initiating signal, which enters the input of the last input from the output of element 22. The first input of the last receives the initiating signal from the output of line 25, which is delayed relative to the comparison signal of the first and second axial spacings generating a comparison code for the first and second axial spacings and identifying it by the third block 12. The second input of the element 22 receives the triggering signal from the output of the line 23, which is delayed relative to Igna comparing the second and third interaxial distances on the time required to generate the code the second and third comparing interaxial distances and identification of its third portion 12.

In the third register 9, the state of its bits varies depending on the value of the output code. In this case, the state of the bits of this register, which are received by the units of the input code, does not change, while the remaining bits are zeroed, i.e. The input code is masked.

From the output of the third register 9, the values of its bits are fed to the inputs of the first block 10 and to the first inputs of the second block 11, to the second information input of which are received from the output of the fourth counter 20 values of its bits. In the first block 10, codes of different types of mobile unit are stored, i.e. codes that have a unit in only one of their bits. Thus, in the first block 10, the type of the mobile unit is identified by comparing the incoming input code with those stored in the block.

If several units are present in the input code of the first block 10, then at its output the signal is zero, i.e. recognition of the type of mobile unit did not occur. If there is only one unit in the input code, there is one unit at the output, which means recognition of the type of mobile unit.

In block 11, the initiation signal from the output of block 10 compares the input code of block 11. Moreover, each code contains the code of the mobile unit for physical activity and the code of the comparison number corresponding to the end of the mobile unit. For example, the first cell of block 11 of the permanent memory contains the code 0100 010. The first four bits (code 0100) correspond to a 4-axis mobile unit, and the last three bits (010) mean that for a 4-axis mobile unit units, two comparisons of center distance should occur, after which the end of the mobile unit will be fixed

If the incoming input code for the second block 11 of the permanent memory coincides with the code written in

the last in advance, a single signal is generated at the output, meaning that the last axis of the mobile unit is traversed above sensor 1. Signals from the outputs of register 9, second and third blocks 10 and I go to the data buses and microcomputer control, where the number of 1 mobile units (wagons and locomotives) passed over the sensor and their accuracy.

From the output of block 11, a single signal is also fed to the inputs of the installation to the zero state of the flip-flops 21 and 18, the first, second, third and fourth counters, 5, 6, 17 and 20, returning them to the Initial zero state, as well as to the installation input in unit state register 9

-

g.

5 Q 5

0

five

O

set all bits of the latter in a single state.

Thus, the device returned to its original state and is ready to recognize the next mobile unit.

Claims (1)

Apparatus of the Invention A device for recognizing the type of a mobile unit of a train, comprising a clock pulse generator connected to one input of the first and second elements AND, pulse counters, the outputs of the first and second of which are connected respectively to the information input; I give the first and second registers, and the third to the installation input of the first trigger in the unit, the output of which is connected to one input of the third element I, the delay lines, memory blocks, one informational inputs of the first and second of which are connected to the output of the third register, information input which is connected to the output of the third memory block, a sensor connected to the counting inputs of the second trigger and the third pulse counter, characterized in that, in order to increase the reliability, it is equipped with comparison blocks, outputs information inputs of the third memory block connected to one and another, one information inputs r – to the outputs of the fourth and fifth registers, other information inputs – to the outputs of the fifth and first registers, the last of which is connected to the information house of the fourth register, by the OR element The output is connected to the synchronous input of the third register, the outputs of the first and second elements And are connected respectively to the counting inputs of the first and second pulse counters, and the second inputs to the direct and inverse the outputs of the second trigger, the direct output of which is connected to the synchronous inputs of the first register. Pa and through the first delay line to one control input of the second comparison unit, and the inverse output to the sync input of the second register, via the second delay line to the synchronization input of the fourth and fifth registers and through the third delay line to one control input of the first block u cj ciBH-. u. / t, while the other controllers: the odes of the first and second comparison blocks are connected to the output of the first trigger, the second input of the third element I is connected to the track sensor, and the output is connected to the counting input of the fourth pulse counter, the output of which is connected to the second information inputs of the second and the third memory block, while the control input of the second memory block is connected to the output of the first block by the gn locks, and the output is connected to the inputs of the installation in the unit of the third register, with the input of the first, second, third and fourth pulse counters to zero, the first trigger, the second trigger, the direct output of which through the first and fourth delay lines connected in series is connected to one input of the OR element, the other input of which is connected through serially the included fifth, third, and second delay lines with the inverse output of the second flip-flop, and the information inputs of the fifth register are connected to the outputs of the second register.