SU746662A1 - Device for transmitting bipolar signal trains - Google Patents

Description

(54) DEVICE FOR TRANSFERRING SEQUENCE OF BIPOLAR SIGNALS

one

The invention relates to telemechanics, is intended for use in a control room device (DP) multi-wire combination. remote signaling system with 5 time and polar separation of signals.

Multi-conductor systems .1J are known in which com-10 wire bonding lines are used for electing controlled points (CP). According to these; wires simultaneously, i.e. parallel code, address pulses are transmitted from the PD. The advantage of multi-drive systems is the simplicity of the equipment KP. Few affluence is the complexity of a multi-path link necessary to obtain a sufficient number of CPs.

Closest to the proposed device is 23 for transmitting sequences of bipolar signals containing a trigger, the outputs of which are connected to the first inputs of the corresponding AND elements, the output of each of which is connected to the input of the corresponding inverter. A disadvantage of the known device is the low signal transmission rate.

The purpose of the invention is to increase the rate of signal transmission. Jq

The goal is achieved by introducing a generator, a pulse shaper, a ppr and ppp transistors, a third inverter and a resistor, the first output of the generator is connected to the trigger input, the second output of the generator is connected to the input of the pulse former, the output which is connected to the second inputs of the elements And, the output of the first inverter is connected to the base of the pnp transistor, the emitter of which is connected to the negative terminal of the power source and the collector to the communication line, the output of the second inverter is connected via the third inverter base p-n-p transistor, the emitter of which podklyu1en to the positive terminal of the power source, and the collector - to the link and via a resistor - to a zero terminal of the power source.

A schematic of the device is shown in FIG. 1, and the operation diagram is shown in FIG. 2

Claims (1)

The device contains a pp p transistor 1, pp p p transistor 2, resistor 3, wires of communication line 4 and 5, the negative terminal of the power source 6, the positive terminal of the power source 7, the trigger 8, the first element And 9, the second element And 10, the first inverter 11, the second inverter 12, the divider 13, the third inverter 14, the generator 15, the pulse shaper 16 with outputs 17 and 18. --- ......-. In the timing diagram of FIG. 2 shows: 19 - generator output pulses, 20 - pulse body output pulses, 21 and 22 - pulses at the trigger outputs, 23 and 24 - pulses of the first and second elements, 25 - pulses in the communication line. In the system of the telealignment a cyclical survey of all control points occurs. Chayetbta polling is generated by the generator 16, all KP is polled for two cycles of his work. Block 16 forms a single-unit |, for example, negative, address impulses in accordance with which, right. in the tele alarm system. From the output 17, the left pulses are fed to the input of the line unit, from the outputs 18, the corresponding afliiecHue impulses are fed to the linear blocks of other information wires. In the initial state, the voltage at the output 17 and at the direct output of the trigger 8 is zero. Therefore, they are equal to zero voltage at both outputs of the elements And, all transistors are closed, and the voltage at the output of the communication device is zero. This mode ensures the reception of the pulses of the telegram r1G: Ea Tsyi: at the zero MBM level, in about-the-second-round address pulses. The first clock pulse 19 three ger 8 tilts, and from the direct trigger output, a negative voltage 21 is applied to the second input of the first element I 9. The pulse pulse transmitter 16 receives the first clock pulse and receives a sequence of address pulses 20 that output 17 The first input of the circuit is 9. And, Pr, the coincidence of the pulses 20 and 21 at the output of the element And 9, negative pulses 23 are formed, which open the first inverter 11. Put the feTibW e nynbc & XoR & Tfi Bep opa 11 opens the transistor 1 output stage, which forms on the load resistor 3 and on. The output of the communication line is 4 negative address pulses. : With the second clock pulse 19, the trigger 8 pereskgotay th yyybyyv sofgoyny; and From its inverse output, a negative voltage is applied to the second element And 10 .22. The former 16, after BTCif) Of the pulse, again forms the second batch of address pulses 20. When voltages 20 and 22 interrupt, the negative pulses 24 (which open the second inverter 12) are formed at the inputs of the element, and 10 at the output of this element. Communication between the output of the second inverter 12 and the input of the third inverter 14 is produced via a divider 13 connected to the positive voltage terminal 7. The parameters of the divider are selected so that in the initial state, when the inverter 12 is closed, a negative voltage is applied to the output of the inverter 14, and it is also closed. When the inverter 12 is opened, a positive voltage is applied to the input of the inverter 14, and it opens. At the output of the inverter 14, negative impulses are formed, which vary from positive voltage to zero. These pulses open the transistor 2 of the output stage, which forms positive address pulses on the load resistor 3 and on the input 4 of the line. The use of the generator and pulse generator in the proposed scheme makes it possible to increase the transmission rate of bipolar pulses. Apparatus of the Invention A device for transmitting bipolar :: signal sequences, comprising a trigger, the outputs of which are connected to the first inputs of the corresponding AND elements, the output of each of which is connected to the input of the corresponding inverter, in order to increase the speed of signal transmission, a generator, a pulse shaper, a divider, a pnp and pnp transistors, a third inverter and a resistor are entered into the device, the first output of the generator is connected to the trigger input, the second output of the generator through the fortir The pulses are connected to the second inputs of the elements I, the output of the first inverter is connected to the base of the pnp transistor, the emitter of which is connected to the negative terminal of the power source and the collector to the communication line, the output of the second inverter is connected through the serially connected divider With a transistor base, the emitter of which is connected to the positive terminal of the power source, and the collector to the communication line and through a resistor to the zero terminal of the power source. Sources of information taken into account during the examination 1.Ilyin V.A. Telecontrol and telecontrol, Energie, M., 1969, p. 288.. 2, Technical means of teleprocessing information in ACS in real time, ed. MDNGP, M., 1976, p. 177, fig. 1 (prototype).