DE1181730B - Circuit arrangement for selecting signal patterns in electrical signal boxes, in particular track diagram signal boxes - Google Patents

Description

Circuit arrangement for selecting signal images in electrical Signal boxes, in particular track diagram signal boxes The invention relates to a Circuit arrangement for selecting the ones required for a set route Signal images in electrical signal boxes, in particular track diagram signal boxes in to which relay groups are assigned to the route elements and which to the turnouts assigned relay groups the switching means for setting, locking, fixing and resolving partial routes.

For example, it is often necessary to have entry signals for a track system in addition to the signal images for the term "drive free" or "Drive free with speed limit" still signal images from additional displays to turn on, e.g. B. Signal images for the maximum permitted speeds and / or for the direction of travel (route) in which the train is to continue. To choose the required signal aspects can be used in interlockings with the entire routes assigned relays these relays can also be used. In track diagram interlockings, in particular Track plan signal boxes in which the routes are divided into partial routes, there are no longer corresponding relays. Therefore, the assigned to the partial routes must Switching means are used to select the signal aspects.

There are known circuit arrangements in which each end of a driveway or each outgoing track is assigned a specific identifier is, the circuits reproduced after selecting the route above the track plan is transmitted to switching means that are assigned to the beginning of the route and there to switch on the travel signal image or one assigned to the signal Direction indicator can be used. In these circuits, although the Selected travel signal aspect depends on whether the route is over a junction leads or not; for this purpose, however, several are modeled on the track plan Circuits and thus a correspondingly high contact effort in the relay groups of the partial routes required. Furthermore, the circuits of the signal relay differently depending on the start of the route at which the signal in question is located be switched so that the same license plates that are used at the same end of the route after are transferred to the respective start of the route, there the course of the route, z. B. for driving straight ahead or driving over a junction, trigger an adapted signal image. Above all, however, these circuit arrangements do not show a solution like the signal images depending on the type of junction, e.g. B. of switches, depending on the construction be driven on at different speeds between 40 and 120 km / h allowed to be controlled. However, this is desirable for track systems in which different routes between the starting points and the destination points. above various points can be set. It is also often necessary; the signal aspects at the beginning of a route also depending on the type of Slipping path behind the signal showing "Halt" at the target point. the driveway to select.

The invention is based on the object of a circuit arrangement to create for the selection of signal images in electrical interlockings, in the the aforementioned disadvantages of the circuit arrangements known for this purpose are avoided. The signal characteristics of the individual signals to be switched on should also be shown under consistent application of uniform circuit parts from the location and type of to the route elements belonging to the currently set route or the slip path be dependent to simplify and unify the entire interlocking circuit to be able to.

According to the invention this is achieved in that the same All signals are assigned to a group of common selection relays whose individual relays via multiple lines from the relay groups to the respective The set route belongs to route elements, of which the ones to be switched on Signal images can be dependent, temporarily brought into the working position will. in which they switch on the signal aspects through each signal separately Release assigned switching means in a predetermined working order. the Selector relays can preferably be on the track plan replicated Circuit network can be controlled in which the corresponding to the set route Circuit is switched through and to which the selection relay in the sub-circuit units of the partial routes, signals, direction tracks, etc. connected via blocking cells are. These blocking cells can be in the relay groups of the relevant route elements be provided from the outset '. It is then only necessary, e.g. B. in itself known way through program plugs, absolutely necessary connections with multiple lines establish that lead to the selection relay.

The subject matter of the invention and further refinements are on Hand explained an embodiment shown in the drawings. It shows F i g. 1 shows an excerpt from a track plan, FIG. 2 is a table of the Track plan according to F i g. 1 selectable routes for trips from left to right as well as the one in the circuits according to FIG. 4 to 6 relays to be controlled and the signal images released by these, FIG. 3 a circuit for when placing signal switching relays temporarily switched on for a signal, FIG. 4 a dem Circuit network based on track plan with connected to it via multiple lines Selector relay for the signal aspects, F i g. 5 a circuit for switching on the signal setting relay for two different travel signal images, F i g. 6 a circuit for switching on the control relay for the signal aspects of a speed indicator and a direction indicator depending on the selection relay, F i g. 7 a circuit for monitoring the proper Working of the selection relays.

The in F i g. 1 schematically illustrated track plan contains the mix of the entry signals A and B on the one hand and the tracks C to G on the other hand, the switches W 1 to W9, the train cover signal H and the exit signal J. The direction arrows assigned to the tracks C, E, F and G indicate the preferred intended traffic direction. The signals A and B are three-image main signals with the signal aspect "red" (rt in Fig. 2) for the stop display and the travel signal images "green" (gn) and "green-yellow" (gn-ge ). In addition, an additional indicator AV or BV for the maximum permissible speed of 20, 30, 60 or 120 km / h is provided for each signal. Each signal is also provided with a substitute signal, which is shown in FIG. 1 is indicated by an open triangle and can be switched on in the event of a disturbed driving signal connection or in the case of wrong-way driving against the preferably intended traffic direction. Furthermore, a direction indicator AZ or BZ is assigned to each signal, by means of which different signal images are displayed when traveling to track F or G. In the track plan, the numbers "40", "60", "120" and "oo" are entered on the branches of the switches Wl to W9. These each indicate the speed in km / h which a train traveling on the relevant line must not exceed and which must be taken into account when selecting the signal images. The symbol co means that there is no speed limit, so that you can drive at the maximum permissible speed. The number "30" and the additional dashed line on the branch of the switch W 9 leading to the dead-end track D mean that when trains are traveling up to signal J, the slip path can also be set to track D and that these journeys only have one because of the limited slip path length Speed up to 30 km / h is permitted. The number "20" in the cover signal H indicates that only a speed of up to 20 km / h is permitted when traveling up to this signal, because, for example, a train can already stop between this signal and the signal J following in the direction of travel.

In the in F i g. 2 contains the following information for the routes possible from entry signals A and B to tracks C, F and G or signals H and J: Column l: entry signal, Column 2: route, Column 3: destination or direction track, Column 4: the changes when setting the route speaking selector relay S1 to S9 (Fig. 4) to select the signal pictures, Column 5: those of the selection relays from column 4, which in the circuits according to FIG. 5 and 6 the control relays for the signal aspects switch on, Column 6: Signal image at the entry signal, Column 7: by the route elements in each case permitted speed, Column 8: Signal image on the speed indicator, Column 9: Signal image on the direction indicator. In column 2, the sign “=” indicates the plus (right) position and the sign “-” indicates the minus (left) position of the turnout concerned. In the routes leading to signal J, the designation and the position of the switch W 9 are placed in brackets to indicate that this switch is in the slip path. Journeys to platform C can only be made with a substitute signal (indication »Ers« in column 6). The associated entry signal shows »Halt« (rt). The speeds entered in column 5 for these journeys to track C are in brackets, as there are special provisions on the permissible speed for journeys on a substitute signal.

In Fig. 3 to 7, closed contacts are shown by a line ending on the line and open contacts are shown by a line crossing the line. The designation of the contacts of the relays shown is chosen so that consecutive numbers are appended to the relay designation. For example, the relay S 1 (FIG. 4) includes the contacts S11 to S110. The contacts FSA 11 and FSA 12 or FSB 11 and FSB 12 (FIG. 3) are temporarily actuated when the routes beginning at the entry signal A to B are set by a route signal connection relay (not shown). The contacts FA 11 and FA 12 or FB 11 and FB 12 are controlled by a route setting relay, which is only reset when the route is released. The contacts W 1l and W 12, W 21 and W 22 etc. to W 81 and W 82 (FIG. 4) are controlled by switch storage relays, not shown, of switches W 1 to W 8 and indicate in the position shown that the associated switch is in the plus position. The contacts ZC, ZF and ZG (Fig. 4) are temporarily closed when the selected route leads to track C, F or G, respectively. The contacts ZH and ZJ are closed when the selected route ends at the signal H or J. The contact ZJD is closed if the slip path to the dead end track D is set during journeys up to the signal J.

Furthermore, the circuit parts accommodated in the various relay groups are shown with thick lines and the line connections between the relay groups are shown with thin lines. Relays or contacts belonging to the same relay group are summarized in a box drawn in dashed lines with the letter R and the appended designation of the associated route element shown in FIG. 1 (e.g. RW 1 for the switch W 1, RF for the track F, RA V for the excited. When it responds, the contacts SB 1 to SB 3 (FIG. 3), SB 4 (FIG. 4), SB 5 (FIG. 5) and SB 6 (FIG. 6) change their position . The contact SB 1 forms a self-closing circuit P-ST2-SB1-SB-M for the relay SB , which remains until the relay ST drops out. In the illustrated basic position of the circuit, the relay ST is energized by quiescent current and provided with an armature dropout delay of, for example, 0.5 seconds. By opening the contacts SB 2 and SB 3 , all other signal connection relays are prevented from responding (mutual exclusion) and the relay ST is switched off at the same time. The working position of the relay SB can therefore only exist until the delay time of the relay ST has expired. During this time, those in FIG. 4 to 7 shown circuits in function. When the signal connection relay SB responds, the route signal connection relay (not shown) is also reset, so that its contacts FSB 11 and FSB 12 return to the position shown.

When the relay ST drops out , the relay SB is switched off again by opening the contact ST 2. The contacts SB 1 to SB 3 then again assume the position shown, so that the relay ST also responds again. If, for example, a route starting at signal A is then set, the signal connection relay SA can respond via contacts ST 1 to SU 1, FSA 12, FA 12 and SB 3 and switch its contacts SA 1 to SA 3 . Instead of the relay SA, other signals can also be switched on, since the line coming from the contact SU 1 in the relay group RB is switched through to the following relay groups through the contacts FB 11 and SB 2 which are closed again.

By closing the contact SB 4 is in F i g. 4 shown, the track plan according to F i g. 1 speed indicator AV) is provided. The boxes RS (Fig. 3 to 6) belong to a relay group with the selector relays S1 to S9 (Fig. 4), which can be used to select the signal aspects of all signals. Circuit parts RA required to control the signal, which are constructed in the same way as the circuit parts RB for the signal B, are in some cases only shown symbolically by a dashed box.

F i g. 3 shows the circuit of one of the signal connection relays SA and SB assigned to the entry signals A and B. If, for example, a route leading from signal B to outgoing track G is set by previously controlling circuits not shown, contacts FSB 11 and FSB 12 of the route signal connection relay, not shown, change their position. After the points in the route have reached the prescribed positions, the route is determined in a manner known per se. As a result, the contacts FB 11 and FB 12 of the route setting relay, not shown, change their position. The signal connection relay SB is then temporarily connected to voltage, which is simulated in the circuit of the circuit corresponding to the set route. The selector relays S1 to S9 for the signal aspects of the entry signals A and B as well as the additional indicators AV and BV or AZ and BZ are controlled via this circuit network. In the signal system assumed as an example, the relays S2 to S7 are the maximum speeds of 20, 30; 40; 60, 120 km / h - or 00 '(= without restriction), of which the. Speeds of 40 km / h and co are not shown separately. If at least one relay S 2 to S5 is switched on, the travel signal image »gn-ge« can appear, which indicates the signal aspect »travel free with speed limit«. If only this signal appears, then the route leads over the branching line of a switch, which can only be driven at a maximum speed of 40 km / h. Is a higher speed permissible due to the special design of the turnouts, e.g. B. 60 km / h, the corresponding signal image of the speed indicator can also be triggered by the relay S5. If a speed even lower than 40 km / h is required, e.g. B. with a slip path set to track D or when driving to the "stop" showing the cover signal H, the signal image of the speed indicator for this lower speed is triggered by the selector relay S2 or S3 in addition to the travel signal image "gn-ge". The travel signal image "gn" is intended for journeys over the straight line of turnouts and / or the branching line of so-called slimline turnouts, which can be driven on at a speed of 120 km / h. This signal aspect can be switched on by the relays S 6 and S 7 when its relay S2 to S5 is energized. The selector relays S 8 and S 9 are used to select the signal pattern for the direction of travel in the direction indicator AZ or BZ (Fig. 1), namely the relay S8 triggers the destination display "F" and the relay S9 the display "G" . The signal patterns assigned to these relays are indicated above the relay winding. The selector relay S1 can be used, for example, for blocking tasks within the route and signal circuit, e.g. B. to block the signal for journeys in the opposite direction if the substitute signal must be switched on at the entry signal A or B for journeys to track C.

The signal patterns assumed in the table (FIG. 2) only apply for example and are always dependent on the locally applicable operating conditions. In particular, the selection relay S4 can also be used to trigger a separate Display used for the maximum speed of 40 km / h. Furthermore can instead of the assumed signal system with only two travel signal images and an additional one Speed display also has a signal system with more than two different values Driving signal images are applied, in which the permissible maximum speeds indicated by different combinations of green and yellow signal lamps will.

The choice relay S1 to S9 are controlled by multiple lines LS1 to LS9, which homopolar valve cells V 11 and V 12 to V 81 and V 82 and VC, VF, VG, VH and VJ to the in F i g. 4 shown circuit parts of the route elements can be connected. These valve cells are expediently provided in principle in the corresponding relay groups. The connections of the circuit network with the multiple lines, which are dependent on the respective track plan, can then be operated with a minimum of free circuitry, e.g. B. be made with program plugs. In Fig. 4, only the connections are established which are necessary for the in the table according to F i g. 2 mentioned routes are required. For example, of the circuit strands that are assigned to the minus position of the switches W 1 and W 2, only the strand assigned to the minus position of the switch W 2 is connected to the multiple line LS5. This is possible because if the turnout W 1 is in the negative position for a route, the turnout W 2 must also be in the negative position, whereby both turnouts require the same signal patterns "gn-ge" and "60". Furthermore, those circuits are not connected to a multiple line via which a selector relay would be switched on, the associated signal aspects of which are excluded anyway due to a working priority provided for the selector relay by a selector relay that is also switched on for inferior signal aspects. For example, for the one in line 1, the one in FIG. 2 from the entry signal A to track C, except for the connection of the circuit part of the relay group RC with the multiple line LS 1 leading to the selector relay S 1, no connection of the circuit parts of the relay groups RW 2, RW 3, RW 6 and RW 7 with the multiple lines LS2 to LS9 required, since when the substitute signal image is switched on, there is no provision for switching on a travel signal image or a speed display and the in FIG. 5 and 6 drawn contacts S 11, S 12, S 15 and S 16 of the relay S 1 is excluded.

It is assumed that the line 25 of FIG. 2, indicated route from signal B to track G has been set. Then in the circuit according to FIG. 4 the switch position contacts W41 and W42 of the switch W 4 to be switched to the minus position for this route are moved. Furthermore, the contact ZG assigned to the target track G is closed. When contact SB 4 is closed , the selector relays S6 and S9 respond in the following circuits: This causes the contacts S61 to S610 and S91 to S910 (FIGS. 3, 5, 6 and 7) to flip.

In the circuit according to FIG. 5 it is initially assumed that the contacts SU2 and SU3 are not present. Therefore, the signal relay SSB 1 can now respond in the following circuit: P-S61-S52-S42-S32-S22-S12- SB5-VB1-SSB1-S14-S24-S34-S44-S54-S63-M. This relay is the signal relay for the signal aspect "gn" of signal B and is only briefly excited in this circuit because contact SB 5 is opened again after 0.5 seconds. The relay then remains attracted via a further winding which is excited in a monitoring circuit (not shown) for the set route via a self-closing contact.

To select the standing relay for the signal images of the speed indicator and the direction indicator to be switched on simultaneously with a travel signal image, the method shown in FIG. 6 shown circuit. When the relay SB (Fig. 3) responds, the circuit F i g. 6 the relays SBV and SBZ have been switched on via the contact SB 6, which close their contacts SBV 1 to SBV 5 (in the circuit part RBV) and SBZ1 to SBZ3 (in the circuit part RBZ). The relays SBV and SBZ are auxiliary relays of the signal connection relay SB and only provided because there are not enough contacts available on this relay with the assumed relay design. The relays BV 1, BV 2, BV 4 and BV 5 are control relays for the signal aspects of the speed indicator BV. The displays associated with these relays are indicated in numbers above the relay symbol. The relay BV 3 is used in the example shown to indicate positively, that is, by responding, that no additional speed display is required with the assumed signal system. The relays BZ 1 and BZ2 are standing relays for the signal aspects "F" and "G" to be displayed by the direction indicator BZ. The relay BZ3 indicates by its response that no direction display is required. The relays BV 1 to BV 5 and BZ1 to BZ3 can be controlled by the contact set S15 / S16 to S95 / S96 of the selector relays S1 to S9 shown in the upper part of Fig. 6 via the multiple lines LV 1 to LV 5 and LZ1 to LZ3. The circuit parts for the additional indicators for the other signals, for example the relay sets RAV and RAZ, are also connected in a corresponding manner to these multiple lines.

In the assumed example of a journey from signal B to track G, the circuit according to FIG. 6 by the according to F i g. 4 switched on relays S 6 and S 9, the contacts S 65 and S66 or S96 and S95 have been switched. The contact SU 4 is not available or short-circuited. Therefore the relay BZ2 in the circuit P-S86-S95-LZ2-SBZ2-BZ2-M can respond and switch on the signal image »F« on the direction indicator BZ. This relay remains energized in a self-closing circuit (not shown) for a second relay winding as long as the signal setting relay SSB 1 (FIG. 5) is energized.

In addition, relay BV 5 is energized in circuit P-S16-S26-S36-S46-S56-S65-LV5-SBV5-BV5-M and switches on the signal "120" on the speed indicator BV. The relay BV 5 also remains energized in a self-closing circuit, not shown, as long as the signal setting relay SSB 1 is energized.

If the detour route indicated in line 26 of the table had been set from the entry signal B to track G, then by switching the switches W 1 and W 2 to the minus position, the values shown in FIG. 4 of the contacts W 113 W 12, W 21 and W 22 shown . When the contact SB 4 is closed , the valve grooves V22, V41, V81 or VG and the multiple lines LSS then speak; LS4, LS 6 or LS 9 the selection relays S4, S5> S 6 and S 9 on. Of the selection relays S4 to S6, however, only the selection relay S4 assigned to the maximum speed of 40 km / h is connected to the. -Contacts S41 to S410, effective. Via the closed contacts S41 and S 43 , according to FIG. 5 address the standing relay SSB 2 in the following circuit: P-S43-S34-S24-S14-SSBZ-VB2-SB5-.S12-S22-S32-S41-M. , This standing relay switches on the travel signal image »gn-ge«, because the assumed route leads over the branches of the switches W 1 to W 4, which can only be driven at a limited speed of 60 or 40 km / h. Due to the open contacts S42 and S44 , the contacts S 51 and S 53 or S 61 and S 63 of the relays S5 and S6, which are connected at the same time as the relay S4, are switched ineffective. The in Fi g. 5 the contact set of the selector relays shown works when the signal relay is switched on with mutual exclusion and priority order.

In the circuit according to FIG. 6 the control relay BZ2 of the direction indicator is switched on again by the selector relay S9, since the direction of travel to track G is the same as for the route assumed first. On the other hand, the relay BV 3 in the following circuit now responds via the relocated contact S45 in the relay group RB V : P-S16-S26-S36-S45-LV3-SBV3-BV3-M. The relay BV 3 does not trigger an additional speed display with the assumed signal system. The response of the relays BV 4 and BV 5 via the contact S55 or S65, which is closed at the same time as the contact S45, is prevented by the open contact S 46, so that neither the signal image »60« nor the signal image »l20« of the speed indicator is switched on. By responding to the selector relay assigned to a low speed level, the switching on of control relays for signal images with higher speed information by the selector relays assigned to these speeds is excluded.

While in the routes considered so far, the signal images on the entry signals and the speed indicators are only selected depending on the location and design of the turnouts, when setting the signals for routes that end at signals H and J, there are other reasons for a required speed limit authoritative. If, for example, a route is set up to the train cover signal H, then this signal is assigned. th circuit part RH according to FIG. 4 the selector relay S2 is switched on via the valve cell VH, the contact ZH and the line LS 2 . This then triggers the travel signal image "gn-ge" on the entry signal (relay SSB 2 in FIG. 5 responds via contacts S 21 and S23) and the signal image "20" on the speed indicator (via contact S 25 in FIG .. ö the relay BV 1 is energized). If: a route ending at the signal J with a slip path is set after the dead-end track D, the closing: contact ZJ - switches via the. also closing contact ZJD of your slip-through control relay o4. the like: the Wahlrülais S3 ah. This then also triggers the travel signal image "gn-ge" on the entry signal and the signal image "30" on the speed indicator @. in addition to the in FIG. 4 shown a circuit. Provide a second corresponding circuit with a 'separate set of selector relays: In this way it is possible to prevent the ineffectiveness of circuit elements, in particular the valve cells via which the selector relays are connected to the switching lines of the associated circuit network, at the latest during the next selection process The switching on of the signal images can then be made dependent on the fact that the 'corresponding selector relay of both switching networks has matching armature positions.

For such a check of the selection relays, for example, the method shown in FIG. 7 shown circuit of a monitoring relay SU can be used. Here the contacts S19 'and S10 to S99 and S910 belong to those in FIG. 4 and the contacts SW 19 and SW 110 to SW 99 and SW 910 to the corresponding selection relays of the additional, in F i g. 4 relay set not shown. The circuit of the monitoring relay SU is routed through meshes lying in series with two parallel branches, with normally open contacts in series in one branch and normally closed contacts of the corresponding selector relays in series in the other branch. With the same armature position of these relays, either one or the other branch is switched through in each mesh. In order that the monitoring relay SU does not have quiescent current flowing through it, normally open contacts S18 to S98 controlled by the selector relays S 1 to S9 are arranged in parallel in its circuit. If, for example, relay S1 responds to this relay, contacts S19 and S110 switch over. The monitoring relay can then only respond via the contacts S 18 and S 110 if the contact SW 110 is also closed due to the response of the relay corresponding to the relay S 1. By means of the contacts SU2 to SU 4 which close when the relay SU responds and which are shown in FIG. 5 and 6 are shown in dashed lines, the switching on of the standing relays for the signal images depends on the proper functioning of all corresponding selection relays and the monitoring relay. Through the in F i g. 3 contact SU 1 in the connection line common to all signal connection relays SA, SB etc., the initiation of a selection process depends on the basic position (dropped out) of the monitoring relay SU. If contacts of the second relay set corresponding to contacts S 17 to S 97 are also arranged in this line, the basic position of the associated relays is also checked with each dialing process. Furthermore, when using two selector relay sets, it can be expedient to use the circuit according to FIG. 5, for example, to replace the lower contact arrangement with mutually exclusive contacts S 13 and S 14 to S73 and S74 of the first relay set by corresponding contacts of the second relay set.

The application of the invention is not limited to circuit arrangements in which the active position of the signal interface relay and the selector relay only exists as long as a current flows through the illustrated windings. It is also possible to use bistable relays, e.g. B. backup, toggle or latching relays to be used, which are provided with a reset winding. These reset windings could be switched on, for example, by a contact that closes when the delay relay ST (FIG. 3) drops out, in order to reset the relay to the basic position required for further selection processes.

It is also possible to use electronic instead of electromagnetic relays To use switching means, e.g. B. monostable or bistable multivibrators with transistors or transfluxors, whose output voltages match the signal patterns via a gate circuit control associated switching means.

It is also possible to not only have the signal aspects as a function on the route elements of the local track system, but also as a function of it from the generic code of the trains. This is for example in railway systems advantageous in which, in addition to steam and / or diesel locomotives, also electric locomotives run, or in transition areas of electric railways with different Voltage systems. It is then possible to have separate signal aspects for the switched on Provide a voltage system and trigger it through the assigned selection relay. Switching on the selector relay can be made, for example, by circuit parts that are included in the in F i g. 4 shown circuit network are assigned to the voltage switches. from Contacts controlled by these switches can then be controlled by contacts from signaling devices for the train numbers or train types are activated.

Claims (5)

Claims: 1. Circuit arrangement for selecting the signal images required for a set route in electrical signal boxes, in particular track diagram signal boxes, in which relay groups are assigned to the route elements and the relay groups assigned to the switches contain the switching means for setting, closing, defining and disconnecting partial routes, characterized that the same signal patterns of the signals (A, AV and AZ or B, BV and BZ) are assigned a group of common selection relays (S1 to S9), the individual relays of which are connected to the relay groups (RW 1 to RW 8, RC, RF, RG, RH and RJ) of the route elements belonging to the route set in each case, on which the signal aspects to be switched on may be dependent, are temporarily brought into the working position in which they enable the signal aspects to be switched on by each signal separately assigned switching means (SSB 1, SSB 2, BV 1 b is BV 5 and / or BZ 1 to BZ 3) in a given priority order. 2. Circuit arrangement according to claim 1, characterized in that for the temporary switching on of the selector relays (S1 to S9) the route starting points (signals A and B) mutually exclusive signal switching relays (SA and SB, F i g. 3) are assigned which are assigned when setting of a route beginning there and are only temporarily switched on depending on a timing relay (ST) that is jointly assigned to all signal switching relays. 3. Circuit arrangement according to claim 1 and 2, characterized in that the response of the signal switching relays (SA and SB) of the basic position (contacts S17 to S97 closed) of the selection relays (S1 to S9) is made dependent. 4. Circuit arrangement according to claim 1 and 2 or 3, characterized in that contacts (SB 4, F i g. 4) of the signal switching relays (SB) are provided, the voltage to the circuit corresponding to the route of a known manner in the track plan Lay simulated circuit network to which the multiple lines (LS1 to LS9) are connected to the circuit strands of the route elements that determine the signal patterns for this route. 5. Circuit arrangement according to claim 1 and 4, characterized in that homopolar blocking cells (V 11 to V82, VC, VF, VG, VH and VJ) are provided for connecting the multiple lines (LS1 to LS9) to the circuit network. 6. Circuit arrangement according to claim 1 and 4 or 5, characterized in that of relay groups (RW 3 and RW 4) several route elements (W3 and W4) which require the same signal pattern for the same route, only one (RW 4) with the multiple line (LS4) for the associated selection relay (S4) is connected. 7. Circuit arrangement according to claim 1 and 4, 5 or 6, characterized in that of the relay groups of the route elements that allow different-valued signal images in the same route, only those are connected to the multiple lines whose associated> -assigned signal image is not already due to the priority order the selector relay is excluded by a selector relay assigned to a lower-quality signal image. B. Circuit arrangement according to claim 1 or 1 and 4, characterized in that temporarily closing contacts (ZG) of the route setting relays are provided for switching on the destination points (e.g. track G) of the route-associated selection relays (S9). 9. Circuit arrangement according to Claim 1 and 8, characterized in that a contact (ZJD) dependent on the set slip path is arranged in series with the signal (J) associated with a signal (J) assigned to the destination of the route "stop". 10. Circuit arrangement according to claim 1 or 1 and 4, characterized in that two identical sets of selector relays are provided, which are switched on via separate circuits from the relay groups of the route elements, and that the switching on of the signal images from the response of a relay (SU, F i g. 7) is made dependent (by contacts SU2 and SU 3, Fig. 5 or SU 4, Fig. 6) that the matching position of contacts of the same type (S19 and SW 19 to S910 and SW 910) all corresponding selection relays are monitored. 11. Circuit arrangement according to claim 1 or 1 and 4, characterized in that for releasing signal images for predetermined pull gates. Selector relays controlled by train gate sensors are provided. Publications considered: German Patent Nos. 1002 383, 1004 654; German interpretative document No. 1039 556.