SU1542843A1 - Automatically-operated decoder of digital code block system - Google Patents

Description

The invention relates to railway automation. The purpose of the invention is to increase reliability. The contactless decoder contains a driver 1 pulses, the output connected to the inputs of the counter 42, through contacts 3, 4 of the transmitter relay to the alarm channels, through contacts 5, 6 of the pulse relay to the inputs of the trigger 11 of the push-pull register, the outputs of which connected to the appropriate alarm channels

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and the address inputs of the operational storage unit 23, the output connected to the inputs of the adder 44, which controls the operation of the signaling channels. $ Shaper 1 converts a sinusoidal voltage into rectangular pulses, which are fed to the input of counter 42, to the inputs of signaling channels, and also to the inputs of trigger 11, which controls the operation of cells. 14-17 push-pull register. At the same time, the output of counter 42 is connected to the data input of the operative storage unit 23, the outputs of the two-stroke register are connected to the address input, and the outputs of the first and second signaling channels through the OR 25 element are input to the write input. the pulse track relay is without current, which causes the trigger 11 to the zero state. Used cells 14-17 bu

zeros are written down, signal relays 35 and 41 are without current. With the release of the site. the QL code generated by the transmitter relay and perceived by the pulse track relay enters the rail line, as a result, unit is recorded in cell 14, and the contents of counter 42 are recorded in the addressable cell of the operational storage unit 23, and the unit pulse is recorded in cell 15, and The contents of the counter 42 are written to another address cell of the operative memory, and then the relay 35 of the first signaling channel is energized. After changing the "QOL" code to the "G" code containing two pulses in the cycle, information is changed in the cells of the operative storage unit 23 and then the relay 41 of the second signaling channel is energized. 3 il.

The invention relates to railway automation.

The purpose of the invention is to increase reliability.

Figure 1 shows the functional diagram of the contactless decoder numeric code auto-lock; figure 2 - diagram of one of the possible implementations of the pulse element And; on fig.Z - structure of code cycles.

The contactless decoder contains a network connected to the driver 1, the output of which is directly connected to the input of the first optoelectronic key element 2, and through the closing contact 3 and the disconnecting contact 4 of the transmitter relay and through the closing contact 5 and the disconnecting contact 6 of the pulse path relay to the inputs of the second, third , fourth and fifth, respectively, optoelectronic key elements

• 7-10; a control trigger 11 connected by the first and second inputs to the outputs of the fourth 9 and fifth 10 optoelectronic key elements, respectively, the outputs of which are connected to the input lines 12 and 13 of the push-pull register consisting of the first cell 14, the second cell 15, the third cell 16 and the fourth cell 17 ; block 18 reset, connected between inputs

setting the cells of the push-pull register and the input bus 12; 19-22 short pulses were formed, connected by the inputs to the outputs of the corresponding cells 14-17 of the push-pull register and address inputs of the operative storage unit 23, whose recording input is connected via the second delay element 24 to the output of the third element OR 25; first, second, tre. tium and fourth pulse elements And 26-29; the first element OR 30 connected to the first channel of the alarm (yellow light channel), connected by inputs to the outputs of the pulse elements. And 26, 27, and the output to serially connected to the first condenser storage 31, the first blocking generator 32, the first trigger 33, the first amplifier (with a rectifier) 34, the first Crel relay of the yellow light), and one the other inputs of the first pulse element And 26 are connected to the outputs of the third optoelectronic key element 8 and the shaper 19 short pulses, respectively, one 55 and the other inputs of the second pulse

element 27 and connected to the outputs, respectively, of the second optoelectronic key 7 and the imaging unit 20 short pulses; logged in

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The second signaling channel OR 36 is connected by inputs to the outputs of the third and fourth pulse elements And 28, 29, and the output to serially connected second capacitor drive 37, second blocking generator 38, second trigger 39, second amplifier (with rectifier) 40 and second signal relay 41, with one and the other inputs of the third pulse element And 28 connected to the outputs, respectively, of the third optoelectronic element 8 and shaper 21 short pulses, one and the other inputs of the fourth pulse element 29 are connected respectively to the outputs of the second optoelectronic key element 7 and generator

• 22 short pulses; the counter 42 connected by the first input to the output of the first optoelectronic key element 2, the second input to the output of the shaper 19 short, pulses through the first delay element 43, and the information outputs to the data inputs of the random access memory
• 23 and to one of the inputs of the adder 44, the other inputs of which are connected to the outputs of the operative storage unit 23; the first element OR NOT 45, connected by its inputs to the outputs of the adder 44, which are also, with the exception of the output of the lower order, connected to the inputs of the element

And 46; the second element OR NOT 4 7 ,. connected by one and the other inputs to the outputs of the element And 46 and the first element OR NOT 45, and the output to the control inputs of the first and second capacitor drives 31 and 37 and to the power input of the first trigger 33; the reference source 48 connected to the transfer input of the adder 44,

Pulse element And contains a capacitor 49, one lining of which is one input of the element, and a capacitor 50, one lining of which is another input of the element, diodes 51 and 52, resistor 53 and inverter 54, the output terminal of which is the output of the pulse element I.

The decoder works as follows.

Shaper 1 converts the sinusoidal voltage of the network into straight 10

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thirty

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coal impulses, the next with a frequency of 100 Hz and received through the first optoelectronic element 2 to the input of the counter 42, the contents of which are constantly changing. When the area is occupied, the impulse track relay is without current, as a result of which the opening contact 6 is constantly closed, therefore the pulses from the driver 1 are fed to the input of the fifth optoelectronic element 10, and the pulses appearing at its output go to the second input of the control trigger 11, translating it into the zero state . Zeros are also written in all cells 14-17 of the push-pull register. In this case, the transmitter relay generates the “QOL” code, for example, with a cycle duration of 0.93 s (FIG. 3), its contacts 3 and 4 are alternately closed and open, as a result of which, at the outputs of the optoelectronic elements 7 and 8, pulse sequences alternate however, they have no effect on the decoder and signal relays 35 and 41 are without current.

When a section is released, the “QOL” code begins to arrive in the rail line - in this case with a cycle duration of 0.8 s (FIG. 3), which is perceived as a pulsed path relay. Under the action of a code pulse, the pulse path relay is activated and its contact 5 is closed, as a result, at the output of the fourth optoelectronic key element 9, a series of pulses occurs; under the action of the cutoff of the first pulse of this series, a control trigger 11 is driven, the potentials of buses 12 and 13 change their values, and as a result, “1” is written in Cell 14 A short pulse pulse generator 19 produces a pulse. If at this moment the opening contact 4 of the transmitter relay is closed, i.e. a code pulse is not sent to the adjacent rail circuit, then at the output of the third optoelectronic key element 8 a sequence of pulses also acts. Thus, at the output of the third optoelectronic key element 8, i.e. at one input of the pulse element .and 26, a voltage drop is generated with and ', at and®, and at the output of the former 19, i.e. at another entrance ele

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ment 26, a single short impulse acts. This leads to the fact that the charged capacitor 49 is connected with the left plate to the point of zero potential and becomes a source of negative unit voltage. The capacitance of the capacitor 49 is an order of magnitude higher than the capacitance of the capacitor 50, as a result of which the latter is charged to double the voltage (figure 2). At the end of the pulse at the other input, the capacitor 50 is connected by one plate with a point of zero potential and becomes a source of double negative voltage. Under the action of this voltage, the inverter 54 switches and a short single pulse is explained at its output. The magnitude of the resistor 53 is chosen so that a single negative voltage is not enough to switch the inverter 54. Thus, under the action of the code pulse front (in the case of the closed state of the break contact 4 of the transmitter relay), a single pulse appears at the output of the first pulse element AND 26, which through the third element OR 25 and the second delay element 24 affects the recording entry of the operative storage unit 23, due to which the contents of (pro, arbitrary) counter 42 are written to its cell with address 0001, prior to recording, the said pulse through the first element OR 30 acts on the first capacitor drive 31, however, its charge does not occur yet, since an arbitrary number is written in the counter 42. After some time, the counter 42 is reset,

At the moment when the code pulse ends, the control trigger 11 comes back to its original state and 'Ί "is written to cell 15. If at that moment a code pulse arrives in the adjacent rail circuit, i.e. if the closing contact 3 of the transmitter relay is closed, then the output of the second the pulse element I 27 produces a short pulse, the first capacitor drive 31 is not charged, however, under the action of this pulse, the cell of the operative storage unit 23 with the address 0011 is written to contain

my counter is 42, i.e. in this case, the number is 23 (binary code 00010111), since the duration of the code pulse of the received code is 0.23 s (FIG. 3). In the ensuing long code interval, the reset unit 18 drives cells 14 and 15 to the initial state. TO

, 0 when the code pulse of the next (second) cycle arrives, 80 pulses go to counter 42. At the same time, "1" is written again in cell 14 and at the output of the first pulsed

Ί5 of the element AND 26 a short pulse reappears (if the opening contact 4 is closed), however, the charge of the first capacitor storage 31 does not occur, however, into the cell

2θ of the operational storage unit 23 with the address 0001, the number 80 will be recorded, after which the unit 23 will return to the read mode. Then the reader 42 will be reset. At the end of the code pulse of the second cycle, the number 23 will be recorded in the counter 42. At this time, the outputs of the operational storage unit 23 will be inverse! code previously recorded in

30 cell c. address 0011 numbers 23, i.e. 11101000, which will be formed in the adder 44 with the number recorded in the counter 42, resulting in the output of the adder 44 will set the code

35 11111111. All bits of this code, for

with the exception of the youngest, served on the * inputs of the element And 46, which leads to the appearance of "1" at its output. If the pulse duration is distorted and is, for example, 0.22 s, then the code 11111110 will appear at the output of the adder 44, which will still cause the appearance of “1” at the output of the element 46. If the pulse duration is 0.24 s, then the output of the adder 44, the number 00000000 will be established, which will cause the appearance of "1" at the output of the first element OR NOT 45. Thus, with the end of each code pulse in subsequent cycles, if its duration is distorted by no more than £ 0.01 s, at the output of the second element OR NOT 47 a zero pulse appears, which is fed to the control input at the first condenser accumulator 31. If at this moment the closing contact 3 of the transmitter relay is closed, then the output of the first element OR 30 produces a pulse (of the order of milliseconds) under which the first capacitor storage 31 is charged. After the end of the pulse, the first blocking generator 32, receiving power from the first capacitor drive 31, it generates short (on the order of microseconds) pulses with a high (about 1000) repetition rate. Similarly, in subsequent cycles it is possible to recharge the capacitor drive 31 at the time of the beginning of the code pulse, if the opening contact 4 of the transmitter relay is closed.

Due to the large duty cycle of the pulse of energy stored in a capacitor of relatively small capacity (about one microfarad), it is enough to power the blocking generator for several code cycles. The pulses from the first blocking oscillator 32 are fed to the counting input of the first trigger 33, so that the latter produces oscillations of a rectangular shape. These oscillations are amplified and rectified by the amplifier 34, which ensures the continuous operation of the first signal relay 35. The first trigger 33 receives power from the output of the second OR-NOT 47 element, thus ensuring control of the damage of the constant type “0”.

After changing the "QOL" code to the "G" code containing two pulses in the cycle and having other temporal characteristics, the information in the cells of the operative storage unit 23 with addresses 0001 and 0011 will also change, after which the charge of the first capacitor drive 31 will begin again, and due to the fact that the corresponding numbers are also written to the cells of the operative storage unit 23 with addresses 0111 and 1111, the second capacitor drive 37 will receive a charge and the second signal relay 41 will be energized.

If the impulse traveling relay is triggered due to a short-circuit short-circuit of the isolating junctions at the moment when the break contact 4 is closed, then, for example, cell 1 is written “1” and a short pulse occurs at the output of the first element OR 30. However, the number recorded in the counter 42, bu1542843

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The details differ from the number recorded in the cell of the operative storage unit 23 with address 0001, as a result of which the output of the second element ILINE 47 will not receive a zero pulse, and the first capacitor drive 31 will not receive a charge. Similarly, the charge 10 of the specified drive 31 is eliminated under the effect of interference on a pulse track relay. In the decoder, the breaks and connections to the zero potential bus are controlled at any point of the circuit.

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Claims (1)

Claim A contactless code numeric auto-lock decoder that contains a 20.duplex register with two information input buses, a reset unit, and memory cells, two alarm channels, each of which contains a series-connected capacitor drive, a blocking generator, a trigger, an amplifier, and a signal relay and is connected through the corresponding OR element with the outputs of the corresponding memory cells of the 30'-two-stroke register, the pulse driver and the transmitter relay, caused by the fact that, in order to increase the Nost, he snab-. by the counter, the first and second delay elements, the adder, to the transfer input of which the voltage source is connected, .pulse elements AND, an on-line storage unit, OR-NOT elements, an AND element, a pulse relay, a trigger trigger, optoelectronic key elements, short formers pulses, and the pulse shaper output is connected to the closing and opening contacts of the transmitter and pulse relay and through the optoelectronic key element to the first input of the counter, the output The operative storage unit 50 with data input and the first input of the adder, the information output of the operative storage unit is connected to the second input, and the closing contact of the transmitter relay is connected to one input of the first and second pulse elements I via the optoelectronic key element and the disconnecting contact of the transmitter relay is connected through opto1542843 Electronic key element - to single-,, it inputs of the third and fourth pulse of the AND, NO and NC contacts, optoelectronic impulse relay through _a key 'elements connected to respective inputs of the control flip-flop, the outputs of which are connected to respective data lines two-stroke register, the output of the first cell the memory of which is connected to r by the first address input of the operative storage block, through the corresponding shaper of short pulses - to another input of the third pulse element And, through the first delay element - with a different counter input and with the control input of the second memory cell, an output connected to the second address input of the operative storage unit and through the corresponding short pulse shaper - with a different input of the first pulse element And and the control input of the third memory cell , the output connected to the third address input of the operative storage unit and through the corresponding shaper of short pulses 12 the house is connected to the fourth core input of the operative storage unit and through the corresponding shaper of short pulses with another input of the second pulsed element AND, while the outputs of the first and ‘third elements AND are connected to the corresponding inputs of the element OR ^ 0 of the first signaling channel, the output connected to one input of the corresponding capacitor drive and one input of the third OR element, another input connected to the one input of the capacitor storage and the output of the OR element of the second signaling channel, to the inputs of which the outputs of the second and fourth pulse elements are And, 20, the output of the third element OR is connected through the second delay element to the recording input of the operative storage unit, and the adder is connected to the inputs of the first OR element — OR and the AND whose outputs are connected to the corresponding inputs of the second OR — element, whose output connected to the control inputs of capacitor accumulators of both signaling channels and with another input of the fourth pulse element And and the control input of the fourth memory cell, \ 7o2 the trigger input of the first alarm trigger channel. output [ta 1t Phi $ .b