SU489369A3 - Device for monitoring communication systems - Google Patents

Description

(54) DEVICE FOR THE CONTROL OF COMMUNICATION SYSTEMS

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G The invention relates to telegraph communication, namely, devices for monitoring communication systems in which a signal receiver receives a constantly repeating U1 signal (telegram) and output devices are triggered only if the received telegrams in series are identical.

The invention may be implemented in train communication systems in which

information is transmitted from the web to the train or from the train to the web.

The D1SH control devices of communication systems are known in which two registers connected in series are connected, from whose outputs the signals shifted in time come through the matching elements to the corresponding triggers with indicator blocks.

The aim of the invention is to improve the reliability of the device.

For this, in the device between the output of the first register and the input of the second register is included an additional delay element with a delay time multiple of j

(The fractional number of transmission periods, and the outputs of like bits of the registers are connected directly to the paraphase inputs of the corresponding elements with two stable states, the outputs of which are connected to the inputs of the output units through the corresponding transformers, for example step-up.

The drawing shows a diagram of the device

A device for monitoring communication systems contains an input of 1 register 2, and a digital pulse, a component of information, is fed to a cockroach. The pulses are pre-checked for synchronization and parity. Then impu; the fusions are fed to a shift register consisting of a known combination of flip-flops or i other elements with two stable states, each at each digit. each trigger has an output connected to output lines 3. Depending on the content of the information, the corresponding wires of the vertical lines 3 oKtj are under voltage. I Each of the wires of lines 3 is connected to one of two inputs of a number of elements 4-1, 4 -2, ... 4-L with two stable states, number tl: equal to the number of wires of lines 3. The voltage of some wires of lines 3 causes the installation of the corresponding elements 4 to the position which is the first 1M of their two stable states niy A further sequence of digital pulses at input 1 pushes the available information from register 2 into delay element 5 and then, after a corresponding delay, into the second register 6, where it is checked for succession, decoded and output as corresponding voltages wires 7.J Each of the wires 7 from the second register 6 is connected to the second E. INPUT of each of the elements 4, therefore, the transition of the elements 4 to the position 2, which is their other stable state, is possible. The retaining element 5 can be of any known type, but in practice it is more convenient to use a shift register consisting of a chain of series-connected triggers without parallel exits with each bit. The delay depends on the number of triggers contained in the register, through which information passes sequentially (mapping impulses under the action of synchronizing pulses, and the greater the number of triggers, the greater the number of synchronizing pulses required to make the information pulse easier on the delaying element The device works as follows. Suppose that at the input of 1 p: a continuous sequence of telegrams, which leads the corresponding elements 4 to receive the setting and throwing and pulses with an interval of time equal to the delay in element 5. I Element 4 operates as a divisor by two, and the resulting alternating current acts through the transformer 8 on a lamp, a kidney, a relay, or another under the output box. 6 will not work, elements 4 will receive pulses from only one of the registers and, therefore, they will not be an alternating current and will not pass through the transformer 8. In the same way, if there is an inaccuracy during the telegram transmission, so that the telegram is consecutivenot identical, at the outputs of elements 4 there will be no alternating current and again transformer 8 (do not miss anything. IJ - I) Further safety improvement can be obtained by turning the transformer 8 upwards so that the subsequent blocks work at higher voltages than the logic items. Then no failures of the transformer 8, including the closure from the primary to the secondary winding, will not cause an undesirable operation of the output unit. Object of the Invention A device for monitoring communication systems comprising two serially connected registers controlling output elements with two stable states, characterized in that, in order to increase the reliability of the device, an additional delay is included between the output of the first register and the input of the second register an element with a delay time that is a multiple of the fractional number of transmission periods, and the outputs of like bits of registers are connected directly to the paraphase inputs ct of the corresponding elements with two slots nivymi state E, whose outputs are connected to inputs of output blocks via respective transformers such povyschayuschie.

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