DE767870C - Device for remote control of unattended stations using dials - Google Patents

Description

Device for remote control of unattended stations by means of dialers In the training for remote control and telecommunication systems, different paths have been taken: - The developed procedures differ fundamentally from one another, depending on whether one is aiming for the greatest possible protection against incorrect switching or optimal transmission speed. A combination of both properties was not previously possible when using pulse-controlled selection organs; If one preferred to ensure the transmission, this would be at the expense of speed, and vice versa. A known device of this type works with two selectors, in such a way that a command only comes about when both selectors have covered a number of steps that is constant for all commands. During a dialing process, only a single command or message can be transmitted. If several messages are to be transmitted, the voters must be brought to the zero position after each transmission, after which a new connection can be established. If the time for the transmission of a message is a seconds, nxa seconds are required for n messages. On the one hand, the security against incorrect operations is extremely high, on the other hand, the procedure works very slowly in the case of the transmission of several messages.

One has now tried to remedy this situation by used only one voter in each station. During the run these voters will be of Transfer the messages from all switches step by step. To avoid incorrect operations the synchronous run of the two voters at the end of their run becomes a special one Checked characters. If both voters are at the moment of the transfer of the If the synchronization character is not on the same step, then «-earth prepared remote messages not executed. The same applies to the transmission of a switching process. Here However, there is the disadvantage that there is no direct connection to the desired switch will be produced. Rather, this becomes the appropriate one in the course of the electoral process Voter contact prepared according to relay and only after the end of the voter run Entry of the synchronization sign finally switched through. This has several Disadvantage. Once the transmission is not absolutely guaranteed, there are several Commands can be prepared «- all of which are carried out at the end of the electoral run will. So if a control process is being processed due to a malfunction, it is a wrong one Command has been prepared, this happens at the same time as the desired command Execution. In addition, the new switch position can be used without any particularly complicated measures cannot be remotely reported immediately, because at the moment the switch is changed, the associated The voter contact has already been left. Rather, this is a second ballot run necessary. Even another device does not completely avoid these disadvantages. in which two pairs of voters for the L-transmission of switching or telecommunication signals, a pair of forward and backward selectors can be used.

The device described below is based on the knowledge that the point of view of the optimal transmission speed in: essential remote reporting and that of absolute security against incorrect switching is essentially assigned to the circuit. Experience has shown that there are several switching operations not at the same time, but one after the other, d. H. after the execution has been activated the previous circuit carried out. When it comes to remote reporting, the situation lies different, insofar as one thinks when several switch trips occur quickly over; r would like to be informed of the new switch positions.

According to the invention are therefore for the production of a circuit connection used at least two dialers in each outstation during the telecommunication can only be transferred to a single voter. The facility becomes functional designed so that only a single switching connection during one Election process can be made while the switch positions of all Switches can be remotely reported in a single dialing process.

The two-dial method used to ensure switching operations can be designed in any way. It can e.g. 13. Up and down dialer pairs used that only allow a circuit when their switching arms are on the same Contacts are located, d. H. transmit the same number of pulses in both directions will. In the examples described below, the Constant sum principle is used. This is because the two at the Connection involved voters when executing a switching operation on corresponding Contacts must be available. If one or more remote messages are to be transmitted in this way only the first pair of voters runs, and when they run synchronously, all of them are transmitted Telecommunication takes place. The present facility offers its own further advantage, which is that even when making a circuit connection, so if two Voters run, all telecommunications are transmitted. This is made possible by that the telecommunication relay or oil switch contacts both on the first and on the second voter, in reverse order, are connected. Runs the first voter, the switches are reported in the order i to io. If the second voter runs, switches io to i are reported. Running at manufacture a switching connection both selectors will be regardless of which connection is established, all telecommunications are transmitted. The last message is here that of the currently selected switch, its switching changes without delay be reported back.

An example of the invention is shown in FIGS. Fig. i to 5 contain the selector and relay circuit of the monitoring station, Fig. 6 to r) that of the operating office. Lir and I_7) are the long-distance lines which the L monitoring center with the individual operating points with the help of a single Connect loop. Corresponding switches are used to select the operating points Group dialers which, when correctly positioned, establish a connection to the individual dialer pairs produce. For the sake of simplicity, only a single operating point is included drawn by a single voter. The other operating locations differ from the subscribed only by the fact that their individual voters to other contacts of the group voters turned on are. In the monitoring station are the voters and relays for two groups, so z. B. two operating points shown so that the operations in the settlement of the company with several operating locations can be derived easily. It is of course possible to have several groups at the same operational site to be assigned if the connection options of a group for monitoring the existing Switches are not enough. The circuit remains exactly the same in this case.

In the example given, the long-distance lines are supplied with closed-circuit current operated. When the apparatus is idle, there is an uninterrupted flow in the long-distance lines Quiescent current, which continuously excites the receiving relays connected in series. the Pulse transmission takes place in that the long-distance lines are interrupted in a pulsed manner will. All receiving relays drop out and cause an intermediate relay the forwarding of the connected voters by one step. The interruptions can both from the monitoring point and from one of the operating points inserted. The principle mode of operation of the system is as follows: Should a Control or telecommunication commands are transmitted, it is initially through an interruption the long-distance line sent a start impulse, which the first group voters of all Operating points and also the monitoring point switches to the first step. As soon as the first group selector of the monitoring station leaves the zero position has a general clock relay in the monitoring point in operation, which further impulsive interruptions in the quiescent current of the long-distance lines inserts so that the group selectors of all stations are incremented will. As well as the group voters reach the contact who is in question is assigned to the next operating point, a time interval is set at this point inserted, which in all stations the switchover from the first group selector on the second complementary group selector. According to this, the general clock relay sent further pulses on the trunk line, so that all complementary group dialers can also be incremented. To Taking a number of steps equal to that of the first group voter to become a If the constant sum is added, a time interval is inserted, which is in the relevant operating point and in the group relay monitoring point turns on, which in turn, the individual voters of this group under the influence of Bring receiving relay. In those operating locations in which the reached Contacts of the group selector no group relay is switched on, of course no single dialer connected. - With this process the station selection resp. Group voting completed.

After the end of the second time interval also run under the influence of the general clock relay, the first individual selectors of the selected Groups. If it is a simple remote message, they complete a cycle and transfer the positions of all switches in this group. If the individual selector in the operating point has run correctly and synchronously, then adds after the last step, he enters a time interval that is greater than that at the time intervals used to establish the connection. This time interval is also in the monitoring station after the last step of the local individual voter received, whereby a safety relay comes into effect, which the display the changes of position announced during the circulation of the voters.

If a remote control process is to be carried out, then is at the contact of the first individual selector at which the desired switch is connected, a time interval of normal size is inserted under its effect the shutdown in the monitoring point and in the selected operating point the first individual voter and the activation of the corresponding individual voter is carried out. Now the corresponding pairs of voters take so many steps back than to supplement the number of steps of the first individual voter to a constant Sum are necessary. This process is completed by a fourth time interval, which initiates the execution of the switching operation. With a long impulse on the first or second step the group selector had already been determined beforehand, whether the selected switch is to be switched on or off, Are the individual selectors in of the operating center ran synchronously with those of the monitoring center they are also based on corresponding contacts to which the switch-on resp. Switch-off contactor of the selected switch - is connected. From the operating point i the correct synchronous operation of the voters is confirmed by the fact that the the fourth time interval mentioned above is extended by a certain amount.

During the connection with i the desired switch the positions of all switches in this group were reported. This is because of this possible that the oil switch contacts in the operating station and the receiving relay Both individual dialers are connected correspondingly to i in the monitoring station will. Is z. B. the switch remotely controlled by a group Switch i to 3 when running the first single selector and when running the second Single selector the switches io to .l reported if it is assumed that only ten Switches are connected as a whole. The last message that appears after the insertion of the the control process triggering time interval is transmitted, so shows immediately the new state of the controlled switch.

The device can also be designed so that if it is present a number of messages are given priority to several operating points. This is made possible by the fact that the preferred treated switches in the individual Operational units can be connected to one and the same group. In this case So the individual voters of this group run in all operating points and in the monitoring point simultaneously. The transmission of the goals of the individual stations is thereby made in such a way that, for example, the switch of the first station on the first third of the individual voter, those of the second station to the second Thirds, etc. are connected. The operation can be carried out in this way that the actuation of the synchronous operation of the individual selector from the individual operating points selectively transmitted.

It is now assumed that the switch 38 is to be turned off remotely in the operating room. Of this switch, only the switch-on contactor E 1I3, the switch-off contactor _-1 1I3 "and the switch contacts SK", I and SE, q ii are shown, which are in the switch-on position. In the monitoring station, the telecommunication relays Reis and Ra are used to indicate the position of the switch 38. " "-Which control the lamp L" of the control acknowledgment switch 38. The control acknowledgment switch should be designed so that the position of a rotary switch with the contacts Q 1I3., 1, Q Zhs ii and Q 1I33111 the switch position in the centrally installed signal lamp L; ,, reproduces, while a centrally located pull button with the contacts QS1 to QS iv is assigned to the control process. Since the pull switch has only one working position, it is determined by moving the rotary switch before it is operated whether the switch is to be switched on or off.

By actuating the pull switch, the contact QS34 i closed (Fig. 2), which via zo1II, 2fii, spei` the clock relay T to Appeals. The working contact sPil ° is closed because it is on voltage relay s p (winding i-2, abt) lying on the minus rail. i) constantly under Electricity stands. By opening the rest contacts fi and tili (Fig. I), the Quiescent current of the long-distance line interrupted, so that the receiving relay E in the L monitoring station and falls in all operating locations. As a result, in all stations via ei 'the intermediate relay Ze is excited, which in turn via zei ° the relay l-, brings about the response by the parallel connected capacitor C, 'also Owns delay. The latter energizes the relay via its normally open contact i "I ° I '., Which is also through the capacitor C;' Drop-out delay receives. The capacitors C4 'and C-' are via the changeover contacts z! 411. and z-, 111 switched so that they in the dropped state of the relays at positive voltage and in the activated state of the same parallel to the relay windings. This ensures that the capacitors, «-Which should be designed as electric capacitors, always under voltage stand and therefore cannot deform.

When considering the further processes, only the Switching operations of the monitoring station tracked «-erden (Fig. I to 5). As can be seen is over when the equipment is idle, i.e. when the long-distance line is connected the working side of e I I the delay relay I-1 with the capacitor Cl 'and r1 1e, the delay relay l'2 with the capacitor C., 'continuously on voltage. These delay relays are designed so that they work with impulses of the receiving relay E does not drop out. Becomes a time interval of a predetermined size inserted, the relay V1 initially drops out. Is the time interval of great Duration, the delay relay l "2 also drops out.

It has already been explained that the closure of the pull switch contact QS "Ai (Fig. 2) on the control acknowledgment switch energized the relay T, whereby the relay Ze responded as a result of the interruption of the long-distance line. The latter places over 7" 111 "o11110," C41. ZlIlo CI (resting side) and c11 (resting side) the drive magnet Ga of the first group selector to voltage, so that it leaves the zero position and is transported to the first step. The shaft normally open contact gau-o 1 is closed, which applies voltage to the winding of the relay Gol. The delay relay Zo (Fig. I) also receives voltage through the normally open contact gol i, which switches the capacitor Co in parallel by means of its own changeover contact zo i. Since this opens the normally closed contact zo I 1 i (Fig. 2), the clock relay T is de-energized and switches the long-distance lines through again via fi and fii. The receiving relay E receives new power, so that by moving the changeover contact ei, the intermediate relay Ze is disconnected and the selector magnet Ga is de-energized by opening zelii ° (Fig. 2). Because the armature at the selector magnet Ga drops out, the armature break contact, which is open when the selector is working, is closed. When this contact is closed, the relay T (Fig. 2) receives via 1) 4111U, v1111 °, C41., c, iii (resting side), ei ", (resting side), goi111, gaa, 2.z11 and spi1 ° Strom and speaks again. The pipelines are therefore reopened via ti and ti 11. E drops again and 7. e responds again, so that the voter magnet receives another pulse and transports its associated contact arms to the second contact. The armature break contact is opened and the relay T is de-energized. The relay E responds again and Ze drops out again. As a result of this repetitive game, the first group selector Ga is indexed step by step until it reaches contact 3. As soon as the switching arm Ga i touches the contact 3 of its selector path (Fig. 3), the armature working contact gaa of the first group selector, the normally closed contact C41, and the Normally open contacts v4111 ° and v2II of relay J energized, which maintains itself via its own normally open contact i 11 and, by opening its normally closed contacts i 1 and liii, continues the interruption of the long-distance lines started by relay T, so that a time interval is inserted into the pulse rim this time interval falls as a result of the opening of the working contact ei, the delay relay V, which de-energizes the selector magnet Ga over viiii °, so that the armature working contact gaa (Fig. 3) opens again.

As soon as the relay V, has dropped out, the relays C, (winding i-2) and F (winding 4-5) are connected to voltage via v511, Yllu and goillo. The relay Cl holds itself by means of its normally open contact ciii and its second winding OI (4-5) via vSII, separates the selector magnet Ga through the changeover contact cl and switches on the selector magnet Gb of the corresponding group selector. The relay F also holds itself by means of the winding F (i-2) via its own normally open contact fi and v, iu (Fig. _)., In the further course of the time interval the delay relay V2 also drops out, so that the relay J (Fig. 3), which had held itself above i ,, becomes currentless. This has the consequence that the trunk lines are switched through again, the relays E, Tri and V2 respond and the relay Ze drops out. Since the latter closes its normally closed contact zeiiiu (Fig. 2), the clock relay T is excited via v, iiiu (Fig. 2), vi1I1o, C41., Zeiiiu, f-, u.Ii and spilo; whereby the long-distance lines are de-energized again, E drops out and Ze responds. As a result of the already mentioned switching of cli (Fig. 2), the selector magnet Gb is now connected to voltage by closing zeiii0, so that the second group selector leaves its rest position. This closes the shaft working contact gbu "oi of the second group selector Gb, which energizes the relay Go. (Fig. I).

When the clock relay T responds, the relay winding F (2-3) is simultaneously connected to voltage via v5 iu, t ii and f ii, which has opposite winding directions than the winding F (2-i), which is still live, so that the relay F drops, its contact fiii opens and thus the relay T also switches off. The trunk lines are switched through again, where E responds and Ze drops out.

The opening zei110 (Fig. 2) has the consequence that the Wählerniägnet Gb of the second group selector is de-energized and its armature drops. By closing the armature contact gba of the second group selector, the relay T receives from U4111., V1 ii Io, C4 1u, c2111 (rest side), ei ", (working side), 9b21 ii, gba, u 1 i and sp i 1 o from The long-distance lines are opened again, the relay Ze responds again and switches the group selector Gb to the second step. Here, the armature break contact gba of the group selector Gb is opened again, so that the clock relay T is de-energized again. This process is repeated in in the same way as described for the control of the first group selector.

The pulse sequence regulated by the clock relay T causes the second group selector Gb to be incremented until the brush of its contact track Gb ii touches the contact 9. At this point, via QS3 $ 11, contact 3 of the path Gai, switching arm of GaI, switching arm of Ga, ', contact 3 of the latter path, contact 9 of path Gb-, the closed armature working contact gba, c, ii, V lio 41 ' v', 'energizes relay J which, by opening its normally closed contacts i i and i i 11, continues the interruption of the trunk lines initiated by relay T, whereby it holds itself via its own normally open contact iii.

As a result of the time interval inserted by relay J , when the normally open contact ei ' opens, the delay relay V, drops out and applies voltage to relays F (4-5) and C2 (i-2) via v511, viiiiu and 9021i °. The relay C2 is held via C2110 by means of its second winding C2 (4-5), separates the drive magnets of the group selectors Ga and Gb with its changeover contact C21 (Fig. 2) and switches on those of the individual selectors. Through the normally closed contact viiu, the group relay GR, (i-2) is simultaneously connected to voltage via v2111 (Fig. 3), contact 9 of the voter path - Gbiii and contact 3 of the voter path Gaiii, which is connected to voltage via its second winding GR, (4- 5; Fig. I), its working contact gr31iu and v511 also holds itself. When the group relay GR3 responds, the selectors Drr3 and D7,3 are selected from the individual selectors.

As mentioned, when l 'dropped, the relay F was again connected to voltage, which is held in via its winding F (24), its normally open contact f and v . After the end of the time interval, which in turn is limited by the dropout of the delay relay I-., And thus by the interruption of the holding circuit from J via i ii and ", II, the relay Z: drops and is energized via zeit- and fill (Fig.2 ) the clock relay T in the manner already described earlier, whereby this causes the relay F to drop out by means of 11 (Fig. z) by switching on the switched-on Wickhing I # '(2-3).

After the end of the time interval in which the selection of the groups was ended, another pulse sequence begins, which advances the individual counter magnet De !, from step to step, since this via 7v11 = 4, v1 1111, a c41 = 1, zt "I '# c,` 1 (working side), c,)''and the normally open contact gr311I` = g is connected to voltage.

The clock overload relay 7 'works in a pulsed manner via ) '41) 1') a i, 11111 ,, E41'1 r # -111 (working side).

c31111, (rest side), r «1) 11, the armature rest contact dli, la of the individual selector Da3, rr I i and s f I I °, since by closing the shaft contact rtit @ -cl @ of the single-counters Da, the relay Rol was energized.

The meter magnet Da. "Is energized until the switching arm of the selector path Da., I reaches contact 8 (Fig. 3); in this position relay J is again energized via QS3,11, contact 3 of the selector path Girl, contact 3 of the voter path Gig r 1, contact G of the voter path Gj> il, contact 9 of the voter path G1,1, the contact QS3 iil of the pull switch on the control acknowledgment switch, contact 8 of the voter path Da. ', The anchor working contact dlr3 <i, c 4 ii, 1.4ii l- @ and The energization of relay j again creates a time interval a-t "i - t, in which the delay relay I" 1 drops out again. In this time interval Relays C3 (z-2) and 1- '(4-5} are energized via -r-, il (fig. r), i, 1111Zt and rolil ". Relay C3 is maintained via c3111, and switches via changeover contact c31 , (Fig. 2) the individual selector Da. Ab and the individual selector Db . At the same time, the relay F remains in the manner described earlier via f I and F (2-i) and brings on after the end of the time interval over and fix ' the relay T to respond. The drive magnet Db. of the corresponding individual voter excited impulsively. The clock relay is controlled via the armature break contact ilbwa of the individual selector D1> 3 and via the make contact roziii, which is closed after the first step of the individual selector because the shaft work contact db, i, ol is the relay Ro., Outside the rest position of the individual selector Db , puts on tension.

The single voter Db. is controlled impulsively up to the fourth contact, because at this point the relay J via 1S3311 (Fig. 3), contact 3 from Gai, contact 3 from Gala, contact q from G7), 1, contact 9 from Gb1, QS "il1, Contact 8 of D, 31, Bontakt 8 of D, 31), contact 4 of Db .; l 1, the armature normally open contact db,; a of the individual selector Db3, c-, 11, and Z, "'. is excited, which lasts over iil and inserts a time interval by opening the normally closed contacts i 1 and i ii I.

During this time interval, T'1 drops again and applies voltage to relays C4 (i-2) and F (4-g) via z "11,." 11111, yü_I11,1. Cl holds itself by means of its second winding C4 (4-5) via its normally open contact c, 111, and separates all selector drives and the clock relay T by opening its normally closed contact C41u (Fig. 2). At the same time, the relay J is switched off by c; 11 (Fig. 3).

During the fourth time interval, the group selectors Ga and Gb are on the third and ninth step, respectively, while the individual selectors Da and Db are on the eighth and fourth step, respectively. During the course of the clock-setting voters in the monitoring station, pulse groups of three, nine, eight and four pulses were sent over the long-distance lines, which were separated from one another by time intervals. These pulse groups convey the selection of the desired switch 38. Whether this switch should be switched on or off was already determined when the first individual selector Dir was run by the fact that a closed-circuit current pulse of longer duration is given at the first or second contact. Since it was assumed that the switch 38 should be switched off remotely, the contact Q 1I331 (Fig. 4) is in the right position, so that at the moment when the switching arm of the selector path Da, ',' is on this contact is located, the relay L "via czII ,,) .4i11, zellu (left contact), c3iiu (rest side), contact 2 of Da31 ii, right contact of QJI" i, QS "iv is energized. The relay L 'disconnects the Clock relay T (Fig. 2) by opening u I 1 so that it cannot respond while L` T is excited the relay is activated, Ze dropped out and thus zel ° open, so that after a predetermined time relay I'4 can drop out. The latter disconnects the circuit of relay L "(Fig. .f) again by opening iyi °, so the clock relay T can send out more pulses.

In the following explanations it should now be described first, what effects these impulse groups have in the operating locations. Basically it should be noted that the pulsed control and switching during the Time intervals from one voter to the next are done in the same way as in the monitoring point. It should first be assumed that the long-distance lines La and Lb either via the contacts 'z110 and ic1IIi ° or via' z210 and 2z2 === 0 are switched through (Fig. 6). The contacts spi and sp I I I are open because the Voltage monitoring relay Sp (winding z-2, Fig. 6) is permanently connected to voltage. As mentioned earlier, the delay relays V1, Y2 and v s are at uninterrupted Quiescent current in the capillary attracted continuously. When a time interval occurs V1 first drops, with a larger time interval also V2 and finally also Well The delay relays V4 and V5 are controlled by the normally open contact zei °, so that in the idle state of the system, d. H. with continuously flowing quiescent current, have fallen off. When an interruption occurs in the quiescent current, in which As is known, E falls and Ze attracts, they are connected to voltage via ze1 °. Will a time pulse is inserted in the course of the pulse transmission or at the end of the same, so V4 falls first and then with a larger time pulse (continuously flowing Quiescent current) by opening v41 ° also V5. The relay ZV is an auxiliary relay of the delay relay V5 and, under the influence of the contacts v4lu and v510 the same operations as the delay relay V5.

The first pulse train arriving via the long-distance lines, which came about under the influence of the clock-generating first group selector in the monitoring station, places the group selector magnet Ga over v1111 °, Cllu, 'e111 °, c211 (rest side) in the operating station (Fig. 7), c111 = (resting side) on voltage. The switching arms Ga i, Ga li and Ga lli of the first group selector are thus controlled by the first pulse train on the third contact. As is known, the third quiescent current pulse was extended to a time interval so that the delay relay V1 drops out and the switching relay Cl (r-.2) applies voltage via v51 = 1 °, villlu and Zol == l.

The relay Gol was already picked up, since the wave contact gawoi of the first group selector Ga remains closed outside the normal position of the latter. In the same way, the relay Go through the shaft contact gbie "1 of the second group selector Gb, the relay Rol through the shaft work contact da3wo1 of the first individual selector Das and the relay red through the shaft work contact db37e" 1 of the second individual selector Db. controlled.

The changeover relay Cl holds itself by means of its second winding Cl (4-5) via its normally open contact cl, and via vsiil °. By moving its changeover contact c11 i 1 (Fig. 7), it separates the drive magnet of the first group selector Ga and switches on that of the second group selector Gb . The second pulse sequence will therefore excite the second group selector Gb in pulses via v111 = °, Cq1u, ze 11i °, C2 = 1 (rest side) and clIII (working side), so that its switching arms Gb I, Gb ii and Gb lll on the ninth contact be transported.

As stated above, the second pulse sequence is also terminated by a pulse interval during which the delay relay V1 drops out again and the second switchover relay C2 (z-2) is excited via v5 = 1 = 0 and 902111, which is activated via its second winding C2 (4-5) and its normally open contact c21 itself. At the same time, the de-excitation of I'1 causes the group relay GR, (= -2) via v2III, vllu, contact 9 of Gb 111 and contact 3 of Ga iii to respond, so that it is also activated by means of its second winding GR3 (4 -5) can hold over 9r3 = 0 and v5 "1o. The changeover relay C3 switches off the group selectors Ga and Gb and applies voltage to the individual selector Da .- (Fig. 7), so that the third pulse sequence overv1IIi °, C41u, zeIllo, c211 (working side), C31 (resting side) and grs111 ° is controlled to the eighth step.

In the course of this pulse sequence, as already explained in the description of the processes in the monitoring station, a time pulse is inserted at the second step of the first individual selector Da; Since during this time pulse the receiving relay E is attracted for a longer time and the intermediate relay Ze has dropped out for the same time, the delay relay V4 drops out and excites the general switch-off relay AS (i-2) via v5 = 10 (Fig. 8), v, liu, Contact 2 of Das, ', contact g of Gb 1 and Gb 1 i, contact 3 of Ga ll and Ga l and 9r3 1u. The relay AS holds over v5 = 11 ° (Fig. 8), v311iu, yolll °, asi and es- by means of its second winding AS (4-5).

The third time interval, which is inserted by the monitoring station at the end of the third pulse sequence, again causes the delay relay V1 to drop out; The changeover relay C3 is excited via yoliii, vlillu and 7) 5 == i0 (Fig.6) and the second winding C3 (4-5) is switched to a self-holding circuit via c31,0. The changeover relay C3 separates the individual selector Da g by means of its changeover contact cgi and switches the individual selector magnet Db. into the circuit of the pulse contact ze i I 1 ° (Fig. 7) via y -O, c41u, ze 111o, c211 (working side), e31 (working side) and 9r31117 ,. The fourth and last pulse train t; -will switch the switching arms Db31 to Db3, v to the fourth contact.

After completion of the fourth and last pulse train, it almost falls of the last time interval inserted by the monitoring point, the Delay relay F'1 off again and puts the fourth changeover relay C4 (i- # z) over 2,, 51r '", r, 1222 = 4 and ro., Rrr to voltage, this being by means of its second Winding C4 (4-5) holds itself above c42 °. The switching relay C4 disconnects when it opens of the normally closed contact c, iu (Fig. 7) all selector magnets.

Since the individual dialers are now on the correct contacts that are assigned to the desired switch 38, the switching operation can be carried out. At the moment in which the delay relay l, -1 drops out and the changeover relay C4 is energized, the closing contact 2.111u also applies the: opening contactor AaI33 of switch 38 to voltage via the following path: gr3ju (Fig.8 ). Contact 3 of Ga l and Ga 1 r, contact 9 of Gb i r and Gb £, contact 8 of Dct3 rr, switch-on contactor .'11I33, contact 4 of Db @ r, as- ,, -, 129u, -, 411-r 2931 and relay circuit J ,. The oil switch 38 i is therefore switched off. Relay J. The pulse interval inserted by the monitoring center is thus extended by the operating center. This extended time interval informs the monitoring station that all voters have been properly switched to corresponding positions.

On (: around this larger time interval the delay relay I "3 drops out in the monitoring point and energizes the safety relay S3 (4-5) via the following current path (Fig. 3) pull switch contact QS3311, contact 3 from Gar and Ga ii, contact G from Gb 1 r and Gb i, pull switch contact Q S3,1 i 1st contact 8 from Da. I and D (! 321, contact 4th from Db.rr, S, (4-5), c42220 and z32,1, Nach the response, the relay S3 holds itself by means of its second winding S3 (i-3) over z! 3'1 ° or zer11 and s31 ' monitoring point; _ is reported, will be explained later. For a better understanding of these processes, a normal feedback process should first be considered, as it happens when the oil switch -N is switched off automatically as a result of overcurrent.

In principle, the Selector controlled in the same way on the contacts assigned to switch 38, as is the case with remote switching, with the difference that the time intervals which cause the switchover from one voter to the next, not from the monitoring station, but to be introduced by the operating center; d. H. just like that, never the surveillance agency creates the dialer connection to the desired switch drive, the Operating point for the feedback, the connection to the feedback relay in question ! here. As already stated in the introduction, however, run with a pure Feedback only the first individual voters who received the messages during a cycle transfer all switches in a group.

When the switch 38, which is drawn in the on-switch position is switched off, the oil switch contact SK33r and SK33 "is thrown. When switching von SK ", (Fig.8) there is a moment where neither the on nor the off contact closed is. The starter relay-1it3, which is above its own, drops out : Normally open contact an3, ° had held, and sets the relay via z,) 211 and asa3, rru J, in tension. This has the consequence that the previously continuously flowing on the line Quiescent current is interrupted by opening the rest contacts i21 and i29 ,,. The receiving relays E of the monitoring point and all operating points fall off and overlay on the intermediate relay Ze on voltage. In this way, as already described, all first group voters Ea on the first step. This did in the operating offices no immediate consequence; in the monitoring station, however, the clock relay T turned on, which in the manner already described the pulse train continues. So all group selectors are continued to be controlled impulsively.

As well as the switching arms of the first group selector Ga in the operating center (Fig. 8) have reached the third contact, via, zx.ru, contact 3 of Ga j, the wave contact ga ° of the first group selector Ga, c4,1, r94 ,,, 0 and 7'211 das Relay j, energized, which maintains itself via i111 and by opening its normally closed contacts il, and i1,11 inserts a time interval. During this time interval will be in all Stations the switching relay Cl energized, which the first group selector off and the second group selector activates. Because the switching operations are exactly the same as with the handling of the remote switching process already described, are in the the following the current flows are partly no longer described in detail, but the individual processes are only given in principle. That comes from the monitoring center Relay F (Fig. I) to the effect, which is triggered by the excitation of the clock relay T the second pulse train starts. Through this pulse sequence the corresponding Group selector Gb switched step by step. The conclusion of the second pulse train in turn causes the relay J1 in the operating station, which at the moment is excited, in which in the operating point (Fig.8) the switching arm Gb 11 the ninth Contact has reached.

The pause relay j1 is excited via the following current path: Plus 4, an.lu, contact 3 from Gal, contact 3 from Ga, ', contact 9 from Gb l 1, the armature working contact gba, c411, v41110, v211, winding j1 to minus . The relay J1 separates in the operating station (Fig. 6) by opening its normally closed contacts 1l1 and i1111 remote lines La and Lb, so that the receiver relay D in all stations for a period of time are normally `. During this time interval, the delay relays T i drop out in the manner already described, so that the changeover relay C2 is energized in all stations. At this moment, the group selectors Ga and Gze, the operating points and the monitoring point are on the third and ninth contact. In the monitoring point (Fig. 3) the group relay GR3 (winding z-2) is excited via Plus 4, v2111, Yu, contact g from Gb l II and contact 3 from Gar, ', which is energized in the usual way via v511, gy311u by means of its second winding GR, (4-5) holds itself (Fig. r). In the same way, the group relay GR, (z-2) from Plus q is activated in the operating point which initiated the establishment of the connection, ie in which the switch 38 to be reported is located. Voltage is applied via v2111, v1 lu, contact 9 of Gb 111 and contact 3 of Ga 111 (Fig. 8), which is also by means of its second winding GR, (4-5) via v5111 ° and gr31 ° (Fig. 6 ) holds. The group relays GR bring the individual selector Da3 under the influence of the receiving relay in the monitoring point and in the operating point of the switch to be reported.

The start of the individual selectors takes place again with the aid of the relay F, which sends a pulse over the line in the manner described earlier after the end of the time interval, which switches all the individual selectors Da3 to the first contact. This has the consequence that the clock-generating relay T comes into effect again in the monitoring point and sends pulses over the line until the individual selector Da has made a cycle in the monitoring point. Provided that there are no disturbances on the line, the individual selector Da, the operating point of the switch 38 to be reported, is also switched on synchronously so that it is also at zero after the end of this series of pulses. While the individual dialer is running, all switches in this group, including the triggered switch 38, are reported. The transmission of the position of each switch takes place in such a way that the quiescent current flowing after the completion of each selector step is sent over the lines with positive or negative polarity. The polarity is set by the relays U, _ and L72 in the control room. If the relay U1 is energized, the long- distance lines La and Lb are switched through via the contacts u110 and u1111 ° so that the lines La are connected to the negative pole of battery B (Fig. 6). If the relay U2 is connected to voltage, the two long-distance lines La and 7_b are exchanged via zt.lu and lt2111u, so that the long-distance line Lb is now connected to the negative pole of battery B (Fig. 6).

The switching processes of the operating center that take place here are shown in Fig. 9. It is assumed that, under the influence of the clock relay, the selector Da, of the operating station has reached the eighth step to which the switch 38 is assigned. Since the latter is in the off position according to the above assumption, the oil switch off contact SK3311 is closed, so that the relay Uz (z- 2) is excited and by interchanging the lines La and Lb switches the quiescent current with a fixed polarity to the monitoring point. Relay U2 switches on after it has responded by opening its normally closed contact 2t21 ', a resistor (UZ).

If the oil switch 38 had been switched on, the relay U1 would be connected to voltage via SK "1i (on position), contact 8 from Da, -, callu, u2111u, atllu, so that the quiescent current would have the opposite polarity.

Now that all of the switch-on contacts on the oil switch shafts are connected to the Selector path Da3111 and thus to relay U1 and all switch-off contacts the selector path Da31v, and thus connected to the relay U2, is activated during the run of the individual selector Da3 the quiescent current following each selector step with a transmit the polarity corresponding to the respective position.

The monitoring point serves as an indicator for the polarity of the quiescent current the polarized relay P (Fig. _), which by means of its changeover contact p the On and off signal relays Re and Ra of the individual switches in the selected group voltage via the voter tracks Da, - and Da31v. The unwinding here Switching operations will again only be explained for the switch 38, its Transfer messages to contact 8 of the individual selector Da3 "earth. Since the switch 38 is in the off position, the long-distance line Lb has negative voltage, so that the polarized relay P switches its contact p to the right position (Fig. 4.). As soon as the intermediate relay Ze is de-energized, the following current path is established: c2IIl, T'411 °, Zerr ", contact P (right side), C.1117 z, 8 from Da.iv, windings Ra., (Z-) and ggr "r ° after plus 3. The tripping relay Ra .. of switch 38 is so excited and sustained through hT3111, ria38,, I, re33I, by means of its second winding a "(4-5). The relay Ra keeps the message of the switch 38, but brings it not yet for display, since it has not yet been determined whether the individual voters actually ran synchronously. This determination is made by the fact that at the end of the run the individual selector Dca "is inserted a time interval from the operating point, which is greater than the time intervals required for the selector switchover. If this large time interval is in the rest position of the single selector slide, in the Monitoring point received, the display of the 'message is enabled.

The insertion of this control time interval takes place in the operating center by energizing relay J2 after completing the last step of the individual selector There, via the following current path (Fig. 8): Plus 4th, contact o from Dca3 r, armature work contact rka, a, c4111, z.4 r 1 1t4, winding J2 to minus. The relay J2 holds out c, 111 and i211 until the delay relay 1r3 has dropped out. Since here the trunk lines are disconnected by opening the normally closed contacts i, 'and i2II, ; becomes a time interval of a certain size after the end of the single selector run inserted.

In the monitoring station, the individual selector Da3 is in the zero position at this moment if the synchronous operation is correct. Since the delay relay chains I-1, I-2 and I "3 in both stations are dimensioned so that I'3 drops earlier in the monitoring station than h3 in the operating station, the safety relay S3 is connected to voltage via the following current path during the time interval : Plus q., T'31, R11 (I -.?.), Gr31i`, ro. = 11t rol11, S3 (1-z to minus (Fig.3). This current path is only switched through if the individual selector Dta3 in the monitoring point is in the 'zero position, since only then the relay R01 is de-energized and therefore the contact ro ,,, is closed -3).

With the excitation of the safety relay S3 in the surveillance center it has now been established that the individual selectors D, 13 are in the monitoring station and the operation center have run synchronously. It can all be prepared Feedback, insofar as it indicates a change in position, is displayed will. The switching operations required for this are shown in Fig. J, and it is assumed that acknowledgment switches serve as display elements, the one only lamp included, which in the event of a mismatch in the position of the indicator relays with the position of the handle in the acknowledgment switch, an optical display is conveyed. In the exemplary embodiment shown, the display is carried out in such a way that that in the dark circuit diagram the change in position is caused by the steady lighting of the lamp of the corresponding acknowledgment switch and when the mimic diagram is switched on this change is indicated by a flashing light of the same symbol.

Again, only the switching operations should be given when the Off position of the switch 38 will be explained. This switch before the start of the 'Message was switched on, the rotary handle Q lIg of the acknowledgment switch 38 has a such a position that the changeover contacts Q3138 r, Q.4138, I and QM "i i, are placed to the left. Assuming that the lamp switch LS so is switched so that the whole circuit diagram does not light up and its changeover contact LS 1 assumes the left position, the lamp L38 in the acknowledgment switch is switched on via the following Current path connected to voltage (Fig.g): Plus 8, L S I (left contact), ss i i, Q1138111 (left contact) and rarer. The off message of switch 38 is thus displayed brought.

If the entire circuit diagram is switched to light, it is initially via the second contact of the lamp switch LSII and b121,1 the flasher relay B1, to voltage placed, which by means of its changeover contact b1,11 the capacitor Cbl, large capacity switches in parallel. As a result, over b11 I (Fig. 5) the second flasher relay BI., is excited, which is also by means of its changeover contact b12 i a large capacitance capacitor Cbl, connected in parallel. By addressing them the first flasher relay Bl is disconnected again from B12 by means of b1,111, so that it drops with a delay given by the capacitance connected in parallel. As soon as it has dropped out, the relay B12 is again energized, so that the game of begins again. The mutual excitation of B1 and B12 makes contact bl i i i (Fig. fi) so intermittently opened and closed, so that he the Rail Z is supplied with flashing voltage and lamp L lights up intermittently. The lamps of all other switches that have not changed are switched on by the Lamp switch contact LS I (right side) connected to a quiet voltage, whereby the changeover contacts Q-11 I I, for example QM "i i, of switch 74 to take effect that are reversely connected to the contacts of the lamp relays rei and yaI like the acknowledgment switch contacts QMI ", for example QM741I1.

In the following, it will now be described how the messages from all switches are transmitted when, during a remote control process, both individual selectors in each group reach corresponding contacts. In principle, the feedback signals from all switches are transmitted, regardless of how many steps the two individual dialers undertake to establish a remote switching connection. It is only assumed that the sum of all steps is constant. The object is achieved in that the feedback contacts of the oil switch in the operating station are connected to both the first individual selector and the second individual selector, in such a way that the switches i to io on the first individual selector and the switches io to io on the second individual selector i, ie in reverse order, are connected. In the example explained earlier, in which the switch 38 was switched off, the individual selector Da runs to contact 8 and the individual selector Db runs to the corresponding contact 4, the sum of all steps being 12. While the selector Da is running, the feedback from switches i to 7 takes place and while the selector Db3 is running, the feedback from switches ii to B. This shows that the last feedback is that of switch 38, ie of the switch which is remote controlled. As a result, the feedback of the new position is transmitted immediately after the remote control process.

The circuit for performing this task is shown in Fig. 9. We remember that the feedback is given after the execution of a selector step, which is known to be caused by interruption of the quiescent current, in that the subsequent quiescent current receives positive or negative polarity depending on the position of the switch that is switched on. So if the first individual selector Das carries out eight steps in the operating center, only the switches connected to contacts i to 7 can be reported, since during the time interval in the eighth step the selector relay C3 switches off selector paths Da, 1 r I and Da , rv takes place. As can be seen from Fig. 9, the selector paths Db3 "I and Db, rv are connected to the oil switch contacts by moving the changeover contacts csllu and c3111. Before the selector Db3 starts to run, gr311 (Fig. 9), contact o of Db3Iv, c, lir the relay U2 energized, so that in the zero position of the second individual selector a fixed polarity is given to the line. The zero position of the selector is therefore not used for the feedback of the switch. During the four steps that the selector Db , makes the message of those switches that are connected to the contacts = to 4 of the selector tracks DbsIII and Db31v. So if a time interval is inserted after the end of the last series of pulses and the switch 38 is switched off, the response of the new position takes place immediately in Connection to the switching operation.

An equivalent circuit is provided in the monitoring station for receiving the feedback on both individual dialers (Fig. 4). Here, too, the feedback relays Re and Ra are always connected to the corresponding contacts of both individual selectors, so that the incoming feedback pulses are correctly assigned to the individual feedback relays. Here, too, the voter tracks Das- and Da31v are separated by the contacts C311u and c3IIIU as well as c310 and the voter tracks Db $ III and Db31v of the second individual voter are connected to the pulse contact zellu via P.

As was already mentioned in the description of the remote switching process, if all group and individual dialers run synchronously, the last time interval from the operating point is extended, which enables the change messages to be displayed in the monitoring point. The safety relay S3 provided for this purpose has a third winding S3 (4-5), which is then energized when the group selector and individual selector of the monitoring station (Fig. 3) are in corresponding positions and the delay relay Tja also drops out. The latter is only the case if a corresponding time interval is inserted by the operating point. The resulting current path is as follows (Fig. 3): negative pole, v3111, c4111 ° S3 (4-5), contact 4 from Db3II, contact 8 from Da31I, contact QS3311I on control acknowledgment switch 38, contact 9 from GbI, contact 9 from Gb II, contact 3 from Ga-, contact 3 from Ga l and contact QS33I I to plus 4. The safety relay Sg responds and enables the display of the feedback in the manner already described.

As can be seen from Fig.3, the safety relay S3 falls third individual voter group, as soon as an individual voter runs, then through Opening of yolIl or yo21I the holding circuit of this relay (winding S3, i-2) is interrupted.

The relay Rh (i-2), which is briefly energized when a normal feedback is received, holds itself via its own working contact yhi and its second winding Rh (4-5) and switches the horn Hu to voltage via rh III (Fig. 5). By pressing the cancel button H T , the latching of the relay Rli can be interrupted and the acoustic signal can be turned off.

We shall now consider the processes that take place when the individual voters have not run synchronously. In this case, in the case of a pure feedback, that is, if only the first individual selector is running, the control time interval of the operating station is either not received at all or not received in the zero position of the individual selector of the monitoring station. The safety relay S3 in the monitoring station (Fig. 3) cannot be energized, so that the feedback signals, which may have caused the display relay to be in the wrong position, are suppressed. After the end of the last series of pulses, i.e. when quiescent current has flowed for a certain period of time, the delay relays 1: ", and I-. or -. the intermediate relay Z1-. will drop out in both stations, so that all of the selectors will switch to the zero position be transported: the group selector GGr in the monitoring point via aGTze "11 zrai ', the self-breaking contact of the group selector Gau the group selector Ga and the selector spool Ga to minus, Gb over gbx °" II, zz "i"; b rs and the selector coil Gb to minus, the individual selector Da, via the self-breaker contact da31 and the selector coil D1 (3 to minus and finally the individual selector Db3 via dbäze "ii, zr., 1111, the self-interrupter: ontakt db," and the selector coil Db. After minus. The equivalent processes take place in the operating center, which can be read off directly from Fig. 7.

In those cases in which the safety relay S3 does not respond due to any malfunctions, a connection with the third group is automatically established, as can be seen from FIGS. 2 and 3. Eber s31'1 (Fig. 2) namely after the dropout of the delay relay Z "or by closing its break contact ü", 11 the excitation of the clock relay T and thus a new start of the apparatus. At the same time, S311111 (Fig. 3) inserts an interval at the third contact of the group selector path Ga l , which in the further course of the automatic switching processes brings about the selection of the third individual selector group in the same way as was done when mapping a switching process.

At the same time, however, there is also a new incentive for the equipment from the operating point, as can be seen in Fig. 9. This is because the starting relay.Irr3, which was held by means of its winding.-1f13 (Z-2) via 1131g1 '(Fig. S) and the circuit breaker contacts, is thrown off via the current paths described below. If the individual selector Dir, has not been moved to the zero position with normal feedback, the relay RU (Fig. 6) is above the shaft contact there, ze "i is still under voltage I '; ab, then the opposite winding .4-1T3 (5-.I) is connected to voltage via ro, II u (Fig. 9), r') 11111 (left side), z ", il, an3111o, so that the relay drops out. As a result, all switches in this group are reported again in the same way as is the case when a switch changes its position.

All switch positions of a group can be changed by pressing can be checked with the control button KT3. Here are first by opening of the contact K T311 t (Fig. 4), all display relays are thrown off, so at Bright switching of the whole picture no lamp can burn. Through the other contacts E T3, (Fig. 2) and K T31, (Fig. 3) will be the desired group in the same `` "ice selected% vie for a normal remote switching and feedback process.

The circuits for the individual voter group Da are still in the monitoring station; and Db- shown, which can be assigned to a second operating point, for example. Since the automatic mode of this voter group is exactly the same as that of the voter group Da3 and Db3 already described, a special description is dispensed with.

This can be ensured by making a slight change to the circuit that during the last time interval in which a Switching process, the switching operation is carried out, but a response is still received occurs although no quiescent current is flowing on the line. The Transfer feedback with lower current intensity to which the receiving relay E do not respond, but which to excite the polarized relay P in the monitoring point is still sufficient. In this way it can be achieved that the feedback of the controlled Switch not only after the time interval has elapsed, but immediately afterwards to the switching operation takes place.

The same intensity method can also be used for the transmission of remote measurement values, which are selected with the help of the remote switching apparatus, are used when a pulse frequency method is used as a basis for remote measurement. The contact device A quiescent current of low intensity would then also be applied to the transmission counter of the telemetry transmitter key, which does not affect the automatic of the voter apparatus.

As can be seen from the previous description, the trunk lines are only switched through if all feedback contacts are in the control room on the oil switch shafts are fine. Is the feedback contact disturbed, the long-distance line is connected to the contact assigned to the disturbed switch permanently interrupted, so that the fault can be identified in the monitoring station. Of course, measures can be taken to address the disturbed stations take out of service, at the same time the trunk lines are switched through again in order to avoid a permanent disturbance of the following operating point. Likewise, as shown in Fig. 6, an artificial through-connection the transmission lines are made when the operating voltage of this operating point Becomes zero. In this case the voltage relay Sp (Fig. 6) drops out and bridges by means of its normally closed contacts sp I and sp III the contacts 2t11 ° and zt1IIIO,

Claims (7)

PATENT CLAIMS: i. Device for remote control of unattended stations by means of selectors, characterized in that for establishing a switching connection two selectors are used in such a way that a switching command is only executed when these two voters together have taken a constant number of steps have, and that feedback on increasing the transmission speed only transferred to one of these two selectors during synchronous operation from contact to contact will. 2. Device according to claim i, characterized in that the feedback transferred to both the first voter and the second, complementary voter can be, in that each feedback relay to corresponding contacts of the two selectors is connected in parallel. 3. Device according to the claims x and 2, characterized in that all responses are transmitted, if the first pair of voters or the second pair of voters duly during one Circulation ran synchronously or both voters covered so many steps have that their number of steps add up to a constant sum. 4. Establishment according to claims i to 3, characterized in that when a remote control process is carried out that of the controlled switch is transmitted as the last feedback. 5. Establishment according to claims i to 4, characterized in that the feedback by Currents of different polarity or frequencies and the switching commands through time intervals are transmitted, which the switchover from the first voter to the second mediate corresponding voters. 6. Device according to claims z to 5, characterized in that the switching operation carried out is displayed without delay and the connection is maintained so long that when switched to a short circuit this process is still transmitted and displayed. 7. Device according to claims i to 6, characterized in that in the case of remote monitoring of several stations via one and the same connection channel, the selection of the desired station takes place both in the feedback and in the remote control by correspondingly switched group selector, so that a simultaneous connection multiple stations is impossible. B. Device according to claim 7, characterized in that important messages are preferred over other, less important messages in that they are assigned to a group with a low ordinal number. G. Device according to Claims 7 and 8, characterized in that important messages from several stations are transmitted at a higher speed than normal by being assigned to one and the same group and being distinguished from one another by different ordinal numbers in the individual selection. ok Device according to Claims i to g, characterized in that, in the case of shared traffic with group selection, the stations are selected in such a way that the stations are first selected by a central clock and then the commands are transmitted using the means of Claims i to g for the individual bodies or reports on their positions. To distinguish the subject matter of the invention from the state of the art, the following publications were taken into account in the granting procedure. German Patent No. 558 726; French Patent No. 6o2 22g; British Patent No. 252 230; AEG-Mitteilungen 1928, p. 116.