DE712804C - Circuit arrangement for counting connections of different values in telecommunications systems, in particular telephone systems - Google Patents

Description

Circuit arrangement for counting connections of different values in Telecommunication systems, particularly telephone systems The present invention relates to a circuit arrangement for counting connections of different values in telecommunications systems, in particular telephone systems in which the counting current surges -not immediately when it is due, it is transferred to the subscriber counter, but is initially saved and at a later point in time, for example at the end of the connection, to the meter be directed.

In known arrangements, devices work with the memories, so-called tapers, together, when the time for the census to be carried out occurs A certain number of counting current impulses depending on the setting of the memory transferred to the meter.

It is already a facility, in particular for counting impulses: e, -been proposed in which an adjustable contact of a memory by a adjustable contact of a tap is mechanically actuated immediately as soon as the Ab: gripper contact a position corresponding to the position of the memory contact has reached. This proposed arrangement in which: the attacker member to the memory member lagging has various shortcomings, in particular that the flawless Carrying out the count is not always guaranteed because, for example, not Proper working of the contact device, permanent or incorrect counts are not .excluded are.

The present invention overcomes this deficiency by while the connection a switching mechanism to one of the number of counting current impulses to be sent out corresponding amount is advanced, while at the occurrence of the point in time another switching mechanism in the opposite direction of movement for counting is set in motion after marking the agreement of the position of both Switchgear sends out counting current surges, the number of which up to the rest position of the memory switchgear corresponds to the distance to be covered.

An exemplary embodiment of the subject matter of the invention is shown in the drawing. The main derailleurs here; The arrangement shown - they are referred to below according to their magnets are the following: i. Zone switch Dm The zone switch used is a lever that is able to record two code numbers and is thus set to one of the zone points OZ, Zol to Zoli #. It may be that the zone is already clearly defined after the first code number. The zone switch is then prevented from being influenced by other series of currents sent by the subscriber and the zone identification, i.e. the connection of one of the zone points via a decade contact, is carried out Units advanced how counting current impulses for the established connection are transmitted to the meter of the calling station. The counting memory is also used for signaling to the calling subscriber and for the forced disconnection of the connection after the permitted conversation time has expired "Because the tap has just like the counting spoke r 36 positions. During the connection it is used to record 5-second time impulses, so that: It therefore performs one cycle for a conversation segment of 3 minutes. During this time, the counting memory is incremented by a certain number of steps according to the selected zone. After the call has ended, the tap is switched in a direction of movement opposite to the counter memory until it has assumed a position corresponding to the counter memory: From this moment on until the idle position is reached, a counting current surge is transmitted to the calling subscriber's counter for each further step.

The individual processes result from the detailed below Description.

The transformer shown here can, for example, be arranged downstream of the first group selector. The assignment of the transmitter is therefore carried out after the first series of number strokes sent by the calling subscriber. When the transformer is idle, relay 1 (r excited in a circuit that runs as follows: earth, contact 63y, winding I of relay Z (does not respond in this circuit), contact 61c, Schaltann dz, 5 in idle position, head contact 5c9 hf4 (closed as long as the zone switch Din is in the rest position), switching-W- I the in rest position, winding 1 of the relay, relay Xt-, wire c and battery potential in a 12 connected connecting device The first group selector creates the following circuit: Earth, in the group selector, assignment wire e, contact 3 hr, winding 1 of relay S, resistor Wil, battery, earth. Relay S responds in this circuit and is in the following holding circuit: earth, battery, Magnet Dz;: does not respond), contacts 78 s, 77 v, decade contact Dl (, resistance like, winding I II of relay S, earth. By closing contact 2.s, occupancy relay C is applied to the occupancy wire and excited. At contact ie it closes a holding circle independently of the Rclais S. A short circuit is produced for the winding I of the relay Kr through contact 34s, so that this relay drops out.

If the calling subscriber sends out the next series of current impulses, then the group selector pulse-wise earth potential is applied to the upper speech wire a, so that the impulse relay A of the transformer receives current surges in the following circuit: earth in the group selector, upper speech wire a, winding of relay A, contact 6f, resistor 'W1i, battery, earth. The current impulses are transmitted in impulses by actuating the contacts 25a and 26a and applying grounding via the upper voice wire to the subsequent connection devices. The relay V is switched on at the first current surge: earth, contacts iic, 28a, windings I and II of the relay V, battery, earth. The relay V short-circuits its winding I at the contact 29 P, so that it bridges the current impulse series as a result of the drop-out delay achieved. At contacts 1 6 v and 17 v, the speech wires to the calling subscriber are opened during the pulse generation. The Rebmagneten Dtnlt the zone switch are ührt the current surges in the following way conces- f: earth contacts 6.1 t, 6o a, 69 a, shaft contact 7 r wiv (closed as long as the zone switch is not yet screwed i, Rebmagnet Droh, battery , Earth. The switching arms of the zone switch are thus lifted into a certain decade. The relay S, whose holding circuit at decade contact D @ I (is opened, is kept excited during the current impulse: series via the following circuit: earth, battery, resistor lVi3, winding 1I of relay S, contacts 23 s, 22 V, 20 t, rie, earth.

First of all, it is assumed that the zone is already uniquely determined by the first series of numbered current impulses affecting the carrier. In this case, the contact Tn switched on by D @ I (is connected to a zone point. As indicated in the drawing, the fifth decade contact is connected to the zone point.Zolv. If now, after the series of impulses, contact 28 a remains open for a longer period of time, relay V has the opportunity to drop out. The following circuit is then established for relay U: Earth, battery, winding of relay U, contact i q. v, head contact 1 5 hh (: closed as long as the zone switch is outside the rest position located), shaft contacts 18 ww (closed as long as the zone switch - is not yet turned in), contacts 2o t, iie, earth. Closing contact 74u creates the following circuit for relay T, which indicates the status of the zone detection: Earth, contact 74 u, winding I of relay T, switching arm dz, 1 in rest position, zone point Zolv, decade contact D'1 (, contacts 77 v, 78 s, magnet D z (does not respond), battery ,: earth Relay S bridged Due to its armature drop-out delay, the pause from opening contact 22v to closing contact 2 it and thus until the following new holding circuit is established, in which relay T is also kept excited: Earth, battery, resistor Wi3, winding II of relay S. , Contact 23 s, winding II of relay T, contacts 2 1 1, iic, earth. The relay T opens its contact 64 t and thereby prevents further series of impulses emitted by the subscriber from reaching the zone switch.

However, if the zone is not yet clearly defined by the first code number acting on the transformer, D @ K is on another contact that is not connected to a zone point, but via D @ I (is then contact q. or another contact which, like contact ¢, is connected to the winding III: of the relay S. After the first series of impulses acting on the transformer, the relay T does not respond, but is activated after the Relay V forms a holding circuit for the winding III of the relay S. If now, as mentioned above @, the relay U is energized after the relay V has dropped out, the pulling magnet D @ mla of the zone switch is switched off by opening the contact 69 u. and by closing the contact 70 u, the rotary magnet Dand is switched on, so that the next series of impulses sent by the subscriber now reaches the rotary magnet in the following way: earth, contacts 64t, 6o a, 70.u, rotary magnetDmd, battery, earth e. The switching arms of the zone switch are thus turned to a specific contact in the set decade. The above-mentioned circuit for the relay U is interrupted in the first turning step on the shaft contact 1 8 WW. During the series of impulses, however, this relay is kept on in the following way: earth, contacts ii c, 12 dt, 1 3 v, winding of relay U, battery, earth. If the zone switch is set in such a way that the switching arm dm is connected to one of the zone points, the following circuit is established for the relay T which characterizes the zone detection: earth, contacts q. u, winding I of the relay T, local zone point OZ or via one of the switching arms medzl to dz4. one of the zone points Zol to Zolv, switch arm thing, contacts 77 v, 78 s, magnet Dz: (does not respond), battery, earth. After the relay T responds, the above-mentioned circuit, running through contacts 23 s and 2 ii, comes about, and the relay S and T are kept energized until the end of the connection. After the relay V has dropped, the hold circuit for the relay U is also interrupted at contact 1 3 v , so that it drops out.

If the zone switch is brought into a position by one or two series of current impulses, - in which zone detection is not possible, then also, since no circuit is closed for relay T due to incorrect setting of the zone switch, the holding circuit for relay S can also be activated contact 2 i t of relay T cannot be established. After the series of current impulses, which excludes a zone detection, the relay S must therefore drop out. By opening contacts 31S and 32s, the voice wires are separated and a busy signal is applied to winding II of relay A and winding III of relay V via contact 49 s and contacts 46 hY and 47 c, inductively to the one on the upper voice wire lying winding I of relay A and winding II of relay V connected to the lower voice wire via a capacitor and thus brought to the knowledge of the calling subscriber. As will be explained later, the switching mechanisms set up until then are triggered.

It is now assumed that the subscriber has sent out series of current impulses which enable zone detection. The zone switch is, for example, set to the zone point Zol by means of an appropriate setting, so that: that is, there is a connection to the first remote zone. According to the present embodiment, it is assumed that the. Charges for the connection in the. Moment of zone detection begins, ie at the moment in which the relay T is energized. After the relay T has responded, the following circuit is established during the release time of the relay U: Earth, contacts 75 t, 76 tt, 78 s, magnet Dz, battery, earth. The magnet Dz of the counting memory responds and switches its switching arms dzl to dzs to the next contact. This process prepares the crediting of a basic fee unit. By closing the contact 52 t, the magnet Da of the tap is connected to a 5-second switch via contact 53 f. The application of the 5-second impulses takes place with the help of a contact device, which is indicated here by the contacts 66 m., 67 In and 68 lt. These contacts work in such a way that, first of all, the contact 66 In is closed for a certain time (for example 1/2 second). Then be closed n for a long time the contact 671h and the contact 68th The 5-second impulses reach the magnet Du in the following way: earth, 5-second switch, contacts 66m, 53f, 52t, magnet Da, battery, earth. At time intervals of 5 seconds each, the switching arms da are incremented until da7 of the tap D a. In the case of connections in the first zone, no special switching process is triggered during the first cycle of the tap, ie during the first 3-minute unit. If, however, after the end of the first conversation time unit, the switch arms of the tap return to the starting position, the following circuit is established after contacts 67nt and 68it have closed: Earth, 5-second switch, contacts 67 In, 6811, switch arm there, in zero position, Contact 8o kr, zone point Zol, switch arm thing, contacts 77v, -.8s, magnet D @ z of the counting memory, battery, earth. The counting memory is thus advanced by a further step at the beginning of the second 3-minute unit. The next increment of the counting memory takes place at the beginning of the seventh minute of the call in the same way. After a conversation of g minutes, the switching arms of the counting memory are switched further so that the switching arm dz is on contact 4. After opening contact 68 n and disconnecting the earth via the 5-second switch, the following circuit is established in which relay 1 (r responds: earth, winding II of relay 1 (r, switching arm dzl on contact 4, zone point Zol, switching arm dm "Contacts 77v, 78s, magnet Dz (does not respond), battery, earth. By closing the contacts 48 kr and 45 kr there is preparation for sending a warning signal to the calling subscriber. If the switching arm you. . reaches contact 34 through the 5-second impulse, the following circuit is established for relay Y: earth, winding II of relay Y, switching arm there, on contact 34, contacts 73 kr, 79c, resistor Wi3, battery, A buzzer Sa is transmitted to winding II of relay A and winding III of relay V via the closed contacts 44Y, 45 izr and 48 kr, which is transmitted inductively via other windings of these relays to the voice wires and thus to the knowledge of the call end participant arrives. If, after the twelfth minute of the conversation, the switching arm da, again reaches the zero position, then the 5-second switch, contacts 67111, 6811, switching arm da, in the zero position, contacts 73 kr, 79c ground potential directly to the resistor Wi ;, applied, which produces a short circuit for the relays S and T, so that these relays are dropped. The connection is interrupted by the contacts 3is, 32s and 49s of the relay S and a busy signal is transmitted to the subscriber in the manner described above.

If the calling subscriber then hangs up his / her receiver (when the final signal is given before the permitted time has elapsed, the relay F is first excited via the lower speech vein, then brought to waste by contact 24 / relay S), the occupancy relay is de-energized in a known manner in the group wäliler , which connects the counting current impulse: receiving relay to the lower speech wire. The following circuit is then established: Earth potential and counting relay (not yet responding in this circuit) in the group selector, lower voice wire, contact 8 p, winding I of the counting single-conductor relay F, resistor Wie, battery, earth. By closing contact 5 f, the interception circuit prepared in the group selector is completed: earth, contacts 4. p, 5f, winding I of relay A, upper voice wire, battery in the group selector. In this circuit, relay A of the transformer responds. The pick-up is now advanced until it has assumed a position corresponding to the counting memory. The marking in the correspondence of the position of both switchgear is done in a mechanical way. A special construction is provided for this purpose, which can be seen in the drawing at the top right. The switching arm dze of the counting memory has been adjusted with the assumed connection of the remote zone I with the maximum permissible duration by four steps in a certain direction of rotation, for example, out of the plane of the drawing The switching arm da7 of the tap, which works together with the switching arm dzs, is thus moved into the plane of the drawing, and in fact advanced until it assumes a position corresponding to the switching arm dzs. Battery, MagnetDa, contacts 5 1 1, 541, 56 p; winding I of relay Z, contact 63 y, earth. Relay Z also responds in this circuit, which creates the following circuit for relay Y via contact 4o z: earth, Contact 4o z, winding I of relay Y, resistor 6V16, battery, earth. At contact 63y it interrupts the above-mentioned circuit for the magnet Da and: das Relay Z. By dropping relay Z and closing contact 39 z, relay Y is brought to drop and the above-mentioned circuit is restored at contact 63 y. In this way, the tap is switched on step by step. The switching arm da7 is designed in such a way that it has a contact member which is bent twice at right angles and which, if it matches the position of the switching arm dzs, comes into engagement with contact springs attached to it. # If this is the case, the following circuit is established: earth, contact 35 da of magnet Dia, switch arm dzs, switch arm dz7, contact 33 f, winding I of relay P, battery, earth. In this circuit, the relay P responds, which forms the following holding circuit for itself and at the same time for the relay F: earth, contacts iic, 30 p, windings II of relays F and P, battery, earth. Contact 4P # switches off the earth potential from the terminal of relay A. However, this relay is kept excited - via the switching arm that keeps the earth potential switched on until the pick-up is in the rest position. By closing the contact 55P, the switching arm of the tap is switched on. After contact 72P is closed, both ends of winding II of relay Y are connected to earth. As a result of this and by short-circuiting the winding I of the relay Z at the contact 62p , a counting speed suitable for the subsequent counting current impulse is achieved. The following circuit is now established for the magnet D i a : earth, contacts 63 y, 62 P, 55 p @, Schaltarn i da on the segment, contact 5 i t, magnet D'a, battery, earth. Relay Z is switched on by contact 38 da of magnet Da: earth, contacts 38 da, 37P, winding II of relay Z, battery, earth. By closing the contact 40 z, the relay Y is switched on, which interrupts the above-mentioned circuit for magnet D! A at contact 63 y. The contact 38 da is thus opened and thus the relay Z is brought to waste. This short-circuits winding I of relay Y at contact 39z. Closing contact 63y re-establishes the circuit for Dia . This interrupter play causes the tap to be switched to the rest position step by step. From the moment the switching arm dzs is reached to the rest position, a counting current surge is sent out for each step of the tap, namely in the following way: Earth, battery, resistor Wie, contacts 9 z, 7 F, lower speech wire and counting transmission relay in the group selector, which in this Circuit is energized and passes the counting current to the counter of the calling station. When the pick-up has reached the rest position, the switching arm, which has thus walked off the segment, is removed from the upper speech wire via the earth potential. This is the criterion for triggering. In the group selector, earth potential is then switched off by the occupancy wire, so that the occupancy relay C in the carrier drops out. By opening the contact iic, the relays F and P are de-energized, so that they drop out. The following circuit then arises: earth, contact 63 y, winding I of relay Z, contact 6 1 t, switching arm dz5 on the segment, magnet Dz, battery, earth. In this circuit, in addition to the magnet Dz, the relay Z also responds, which switches on the relay Y by closing the contact 40 z. By opening the contact 63 y, the circuit described above for D z and relay Z is interrupted and a short circuit at contact 39z is established for relay Y which, after its drop at contact 63 y, restores the circuit for Dz and Z described above. In this way, the counting memory is incremented until it has reached the rest position. The following circuit is then closed: Earth, battery, rotary magnet D, md of the zone switch, head contact 58, hk (: closed as long as the zone switch is outside the rest position), switch arm.dzs in rest position, contact 61z, winding I of relay Z, Contact 63 y, earth. With the relay Z as an interrupter, the zone switch is switched to its rest position. The head contact 58 hh is then open, so that further influencing of the magnet Dvnd is not possible. Relay 1 (y is switched on again via contact 59 hh and switching arm-da5 in the rest position, so that: the initial state of the system is restored.

In the case of connections in Zone I, as mentioned, the counting memory was incremented by one step for each conversation time unit of 3 minutes, each time the switching armdal comes to the zero position after every 3 minutes. In the case of connections in zone 11, ie if the zone switch is set to the zone point inch, the counting memory is incremented twice for each conversation time unit of 3 minutes . and contact 8 I hr in positions o and 1 9 of the tap. In the case of connections in zone 11I, i.e. if the zone switch is set to the zone point Zolle, the counting memory is incremented by three steps for each conversation time unit of 3 minutes, always when the switching arm of the tap has positions o, 12 and 24. achieved. The incremental current surges reach the magnet Dz via contact 82 zr. Finally, with connections to Zone IV, i.e. when the zone switch is set to the zone point Zolv, the counting memory is incremented four times for each conversation time unit of 3 minutes, and always when the switching arm da.L is in positions o, 9, I8, 27 reached. The current surges reach the magnet D, -7 via contact 83 kt-.

If the zone switch is set so that the local zone point OZ is switched on, the counting memory is only incremented once, namely during the delayed release of relay U via contacts 751, .-6u and 78s. The counting memory is not incremented in the case of local connections; there is also no limitation of the speaking time. In the case of local connections, the switching arm is dz ,; advanced by one step, so that the switching arm da7, when the point in time for carrying out the count occurs, has to perform almost a full revolution in the opposite direction in order to reach the switching arm dz6. The switching arm da7 then only has to carry out one step until it is in the rest position, so that only one counting current surge is sent to the subscriber.

Claims (6)

PATENTANSPRL? CIIE: I. Circuit arrangement for counting% different-valued connections in telecommunication systems, in particular telephone systems, characterized in that during the connection a switching mechanism (counting memory D, z) is incremented by an amount corresponding to the number of counting current pulses to be sent out, while when the time occurs For counting, another switching mechanism (Abgreifer Dia) is set in motion in the opposite direction of movement, which, after identifying that the position of the two switching mechanisms corresponds, sends out counting current pulses, the number of which corresponds to the distance to be covered to the rest position of the storage switching mechanism. 2. Circuit arrangement according to claim i, characterized in that that. if the position of the two rear derailleurs match, the switching elements of the same (dz, da7) enter into a conductive connection and via them a marking circuit (for relay P) is closed. 3. Circuit arrangement according to claim 2, characterized characterized in that both switching elements mechanically when the position matches come into engagement with each other. .l. Circuit arrangement according to Claim i, characterized characterized in that the tap (D! a) during the connection to control the Continuation of the counting memory is used. 5. Circuit arrangement according to claim 4, characterized in that a certain switching arm of the tap for each remote zone to control the progression of the counter memory during the connection accordingly serves the respective zone. 6. A circuit arrangement according to claim 5, characterized in that the Ab gripper during the connection for a conversation time unit of a certain duration (3 `knuten) executes a cycle and in doing so, via the switching arm of the tap connected by the zone switch, incremental current surges in the respective i The corresponding number in the zone is sent to the counting memory. . Circuit arrangement according to Claim i, characterized in that the counting memory (Dz) is used to determine the maximum i permissible conversation time. B. Circuit arrangement according to claim, characterized in that a special switching arm of the counter memory is assigned to each remote zone, via which processes to send a warning signal to the calling subscriber shortly before the end of the permissible conversation time and after the same processes to inevitably disconnect the connection gc- i controls are.