DE1285013B - Multi-stage coupling arrangement of coordinate switches for telecommunications, especially telephone switching systems - Google Patents

Description

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The invention relates to a multi-stage coupling allele test of the c-cores of the associated intermediate arrangement from crossbar switches, their bridging lines in front. All those test relays speak magnets for bridge actuation by means of an impulse, which are not from the connection set first polarity from the marker to the core saturation blocking potential (plus potential) on the c-wire will then find 5 due to the core remanence. These test relays prepare a reset hold remain and to trigger the bridge by means of a circuit for the assigned, free, but still of a second polarity pulse in the unsaturated bridge magnet. Then erten State to be reset, for telecommunication, the reset follows with opposite direction in particular telephone systems. Current and the selection of a test relay and it

As is known, a bridge magnet is assigned as a coordinate switch for the new connecting device denotes that a coordinate field from manure. This coupling arrangement has the disadvantage that Has rods and bridges. Poles and bridges are the first coupling stage after the end of the conversation remains switched through selectively by common excitation of the recipient and therefore, for example, rod and bridge magnets operated. One sentence occurs wisely on the subscriber line electrical contacts (coupling point contacts) closes 15 interference voltages get into the crossbar switch at the intersection of an actuated rod and one that may be wrongly there made bridge. Then the bar magnet will trigger bridge magnets of existing connections de-energized to trigger the rod, and the bridge or in other ways can lead to malfunctions, magnet further energized to the coupling point for the The object of the invention is the sheep duration a multistage coupling arrangement made of a coordinate connection produced between two participants to keep. When these data switches are triggered, their bridge magnets are used to bridge the gap the bridge magnet is de-energized and the actuation by means of a first polarity pulse from Crosspoint triggered. Markers are controlled in the core saturation,

In order to keep the bridge magnets energized, it is then held due to the nuclear remanence

the arrangement according to German patent specification 25 and for bridge release by means of a pulse

955 064 a signal wire (c wire) of the connection of the second polarity in the unsaturated state

line used as a holding wire to which the are set back, in which switching arrangement

Bridges over contacts of voters to hold par- the disadvantages described are avoided,

turn on allele. The provision is made by sub- This is achieved according to the invention by

refraction of the individual bridge magnets 30 that

flowing holding current by means of separating the holding _a ) the bridge magnets in a known manner by means of

core in the connection set. The disadvantage of such crosspoint contacts to the occupancy wire in parallel

The arrangement consists in the fact that the excited bridges can be connected that

magnets constantly need electricity. b) in a known manner for the duration of a connection

In order to avoid such power consumption, 35 _dung ^ _n connection set zero or something similar

in the German Auslegeschnft 1184 384 (column 31, p _ote ntial is connected to the occupancy line,

Claim 9) recommended that the bridge magnets with _{which the} bridge involved in the connection

To provide Kernmatenal which short-circuits in the remanence _like items and associated bridges

state can be controlled. In doing so, the rema- _{as be} w marks, and that

SSSgHSiSS 'aÄSÄÄ ^ ss

central facilities, ^wel ! ^e [ ^{Polantat connected to the} voltage source

are used, all of which are used to trigger the ^e

Control connection associated bridge magnets 45 The invention is based on an embodiment an example of an oppositely directed current explained in more detail.

for the purpose of deleting the remanent magnetic flux. F i g. 1 shows the circuit arrangement of a seducer. These renewed controls for the linkage path over several stages of a coupling arrangement equipped with a coordinate solution of connections require the central data switch;
Facilities in an undesirable manner. 50 Fig. 2 shows a hysteresis loop for explanation

The German Auslegeschrift 1121122 describes how the crosspoints work,
Also a two-stage coupling arrangement made of coordi- As is known, a co-ordinate switch has a data switch known in which the bridge magnets, rectangular frames with mecha fastened therein, also have a core material that is used in niches and electrical components. The mechani-control of the bridge magnet is magnetized 55 see components consist of a coordinate field and as a result of the remanence the bridge is held in the actuated by parallel rails or shafts, which are held by means of ge state. This coupling arrangement is designed in such a way that bearings, leaf springs or similar elements are designed in such a way that at the end of the conversation only the corresponding one is fastened in a rotatable or longitudinally displaceable manner. The rails running in the bridge of the last coupling stage from the connection set of one direction are triggered as being triggered, while the corresponding 60 rods (selector rails) and the rails that initially run transversely to these bridges of the upstream coupling stages are not triggered as bridges, but only then if the (holding rails) is designated. Magnets are arranged on the yard marker for the purpose of producing a new joint at the ends of the rails for the purpose of binding them to the corresponding bridge magnets. First a bar magnet works switches. In fact, if there is a 65 and then a bridge magnet works. Then bmdungswunsch.es the marker on the bridge magnet triggers the bar magnet, while the bridge magnet magnet of the first coupling stage is switched on. The operator who then takes a par-drive for the duration of a (call) connection in the marker’s test relay record.

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Distributed along the length of each pole, an antenna corresponds to the desired connection path, number of wire or marker springs attached to the first then a positive pulse high span bar are moved, either to the right or to the left, the connections 116, 140, etc. and thus the around when the bar is operated. When first bridge magnets 115, 117, 118 are fed. Through this a rod is rotated and then a bridge is moved 5 the magnetic flux is in the core of the bridge magnets is, the wire or marker pen on the cross 115, 117, 118 is driven to saturation. To point of the two actuated rails bent in order to terminate the positive impulse from the Mareinen To generate pressure and thereby apply a set of electri- cal sources to the connections first of all to earth potential tric contacts to close. These contacts are switched on 116,140 etc.

that is kept closed as long as the bridge is closed. The operations described in bemagnet is actuated. known manner established a connection path, the The electrical components include a number of the connection via the speech wires 120 and one bare wires that cover the entire length of the co-parallel connection over the assignment core, ordinate switch run parallel to the bridges. The connection via the occupancy wire runs from These wires are called "column wires". Lower the battery 105 over the winding of the cut-off relay right to these column wires and in the third 106, via the coupling contacts 121 to 132 (in numerical dimension, d. H. perpendicular to the axes of the sequence) and over the winding of the occupancy bridges and rods, contact spring sets are connected to relay 107 to the negative terminal of the battery. the arranges, the relays 106, 107 referred to as "crosspoint contacts" speak on the basis of the vom.Mar Werden. These contact springs are electrical contactors that are applied to earth potential. The switching file, which are actuated when the wire spring causes them th of the speech path in a known manner brings it into the closed position. These contact springs trigger the response of the monitoring relay 108. Hence touch the associated bare wire and close the contact 133 of the relay 107 and the form a current-carrying contact. Contact 134 of relay 108. Via these contacts Under the crosspoint contacts there is control 25 becomes earth potential as a blocking potential on the Bekontakte, the assignment contacts or also the c-core connection circuit created via the coupling contacts can be named. If one of the connecting contacts 121 to 132 and the isolating relay 106 leads, manure path is established, so there is parallel to the isolating relay 106 is therefore held if now Speech path a via these occupancy contacts ver the marker is released and thus the from ongoing connection path. As the bridge magnets 30 put markers on terminals 116,140, etc. during an existing connection (via which the earth potential disappears. The selection of the jumper assignment wire) are excited, the two magnets, the operation of the occupancy relay and the Side of the speech path existing line switching isolating relay as well as the release of the marker an occupancy potential that is followed by triggering in a known manner. An equally well-known one the connection path can be switched off. 35 characteristic is the saturation of the magnetic cores, which to This potential causes the constant electricity consumption that keeps the crosspoints closed, which leads to the permanent magnetism on which the invention is based, whereby a permanent the prior art is avoided. Circuit is avoided.

F i g. 1 shows an occupancy circuit according to the invention in which the remanent magnetism is controlled in 4 ° via the contact 134 earth or similar blocking the cores of the bridge magnets of a potential produced directly to the occupancy wire connected connection path. And that runs switches. Therefore, the interference voltages normally expected on the occupancy circuit via a subscriber switch occupancy wire cannot be device 100, three series-connected coordinate energy-rich enough to trigger the switched-through switch stages 101 to 103 and a feed 45 connection path again,
connecting set 104. Since each of these can have any known form of dropout of the monitoring relay when the handset is hung up in the circuits 100 to 104, they are not described in more detail. The 108 initiates and, by means of the contact 134, the ground subscriber circuit 100 has disconnected the potential of the occupancy wire in the occupancy wire. In this series a battery 105 and an isolating relay 106 50 thereupon a current flows from the negative terminal. The connection set 104 has an occupancy of the battery via the winding of the occupancy relay relay 107 and a monitoring relay 108. Separation 107, the coupling contacts 132, 131 and the winding relays, occupancy relays and monitoring relays are the bridge magnet 118 to earth, for a known design. a period of time which is sufficient to bring the magnetic flux. Each coupling stage has a bare column wire 55 out of the saturation region. In the same z. B. 109, which is interrupted at the intersection 110 to form two ways, a current flows from the negative terminal of isolated sets of contacts. When one of the battery 105 switches through the coupling point via the winding of the isolating relay, the corresponding 106, coupling contacts 121, 122 and the winding of the contacts simultaneously establish an electrical connection of the bridge magnet 115 to earth, with the connection being made with the bare column wire. The coupling point 60 of the bridge magnet 115 is canceled, the switch 101, for example, is activated by means of the bridge magnets 115, 118.
Bridge magnet 115 switched through, which is operated by a The magnet 117 can trigger or can also trigger a marker (not shown) via an on; that depends on the size of the fluctuation connection 116 being controlled. All other coupling points in the characteristics of the individual bridge magnets are designed in the same way and are kept in the same way. 65 from. However, it is irrelevant whether the middle bridge - If a connection is to be established, so magnet 117 also triggers at this point in time, the marker selects those or not in a known manner (because the disconnection of the connection involves connections 116, 140, etc., which the coupling point at the beginning and end of the coupling arrangement

follows is). The marker can namely be designed in a known manner so that it is a negative Test potential can apply to the connections 140 to determine whether the bridge magnets are occupied. This negative test potential appears at connection 140 before the bridge magnet 117 passes through the Response potential for a new connection is excited again. Since the busy test on one If there is no ground potential applied to the free column wire via the contact 134, the negative test potential can also be used cause the desaturation of the bridge magnet 117, so that the corresponding coupling point in of stage 102 is triggered.

Fig. 2 shows a hysteresis loop, which indicates a type of design of the magnetic characteristics. The winding has a number of high-resistance turns, some of which are bridged by a diode to achieve a unidirectional magnetic effect. This is intended for a Current flow in one direction a greater saturation effect can be achieved than when the current in the other direction flows.

Another solution would be to use a combination of hard and soft core materials in a series magnetic field to achieve the desired as th unidirectional saturation characteristics. In any case, the bridge magnet winding should and the associated core be designed so that this asymmetrical magnetic effect is achieved which is a locking by the current flowing in one direction and an unlocking made possible by the current flowing in the other direction. This makes the coupling arrangement more reliable, because the coupling point does not tend to lock when in the direction of unsaturation with high (negative) potentials.

The de-excitation of the bridge magnet is achieved by switching on a negative potential of -48 V. via the relay windings, while the marker switches on the bridge magnets with a pulse, the highest voltage value of which is around + 170 V. This choice of voltages is additional increases reliability.

The invention achieves three advantages. First, need the magnetically locked bridge magnets not to be selected again when the connection is to be released. Second, the magnetically locked coupling points of all coupling stages like a rip cord so fast and so easily triggered like the usual stopping paths in a coupling arrangement. Third, can be free, but still Through-connected bridges are triggered immediately with the potential required for testing serves.

Claims (7)

Claims: 5S 1. Multi-stage coupling arrangement of coordinate switches, their bridge magnets for bridge actuation controlled into nuclear saturation by means of a first polarity pulse from the marker are then held due to the core remanence and to trigger the bridge by means of of a second polarity pulse are returned to the unsaturated state for Telecommunications, in particular telephone systems, characterized in that a) the bridge magnets (115,117,118) in a known manner by means of coupling point contacts (121 to 131) can be connected in parallel to the assignment wire, that b) in a known manner for the duration of a connection in the connection set zero or a similar blocking potential is switched on to the occupancy wire, which the Connection involved bridge magnets short-circuits and the associated bridges marked as occupied, and that c) the occupancy wire on both sides of the coupling arrangement via switching means (106, 107) is connected to the voltage source supplying the pulses of the second polarity (-48 V) is. 2. Coupling arrangement according to claim 1, characterized in that for each coupling point two working contacts (121,122 and 123,124) lie in series in the occupancy wire, the common connection point of which is connected to that connection (116) of the bridge magnet winding which the marker controls for through-connection. 3. Coupling arrangement according to claim 1 or 2, characterized in that the marker before the bridge setting for a new connection with a pulse of the second polarity checks the free or occupied state of the bridges and at the same time the free, but still connected bridges at least the middle level ( n) resets. 4. Coupling arrangement according to claim 1, 2 or 3, characterized in that the marker after delivery of the pulse serving to respond to the bridge magnets applies zero potential to these bridge magnets until switching means (108) in the connection set (104) responding to the switching through of the connection Apply zero potential to the occupancy wire of the connected connection. 5. Coupling arrangement according to one or more of claims 1 to 4, characterized in that that the bridge magnet is designed such that a larger magnetic Saturation effect when controlling in the response direction than when controlling in the tripping direction results. 6. Coupling arrangement according to claim 5, characterized in that part of the bridge magnet winding is bridged by a diode. 7. Coupling arrangement according to claim 5, characterized in that the core of the bridge magnet comprises hard and soft magnetic materials in series. 1 sheet of drawings