DE1103987B - Process for the identification or determination of core combinations in toroidal core evaluation fields for telecommunication systems, especially telephone systems - Google Patents

Description

Procedure for identifying or establishing core combinations It is in toroidal evaluation fields for telecommunications, especially telephone systems known in telecommunications, in particular telephone systems for subscriber identification To use toroidal fields. For these core fields, loops are made accordingly the individual subscriber numbers threaded through a number of cores, with these take over the function of shunting rings and transmitters. So z. Am a core field with three columns (one column generally corresponds to one Decade) and ten lines with a total of thirty toroidal cores a total of a thousand clearly distinguishable core combinations, each including three columns, are formed.

This technique assumes that there is only one evaluation loop of the core field is closed, otherwise more than three cores will be magnetized and thus no clear assignment of the individual core combinations can be recognized is.

When using such a core field, e.g. B. for input identification an indirectly controlled group selection level or for participant identification, with multiple loops at the same time due to the random requests are generally identified, a classification element is therefore required that these Turns on evaluation loops one after the other for testing.

The use of such elements is a significant one Expenditure on switching means and control lines, especially as the organ of order in most known arrangements is not arranged centrally. On the other hand there is: the economic one Use of such core fields for revaluation, for checking key figures in blocking devices or to carry out a free or occupied check according to the known method not possible via an order link, since the determination of the via a blocking follower controlled cores or the loop common to all controlled cores as a result the individual connection of all existing ones, which is required one after the other Grinding unacceptable lag times and additional storage for subsequent ones neutral series of current impulses. When checking key figures in locking devices must z. B. in the pause between the last to be evaluated and the following first neutral current impulse series, all existing blocking loops once in a row after having been switched on by the ordering element before the new series of current impulses runs in, as otherwise no clear control is possible any more.

The present invention aims at a method of identification or determination of core combinations that do without a special structural element with the associated control lines and even if there are several at the same time generally marked core field loops an immediate clear identification or detection of a single core combination. This is achieved by that the checking out of a single one of several at the same time generally marked Core combinations or evaluation loops through additional interdependent Switching measures (e.g. disconnection or special identification of certain core loop groups and / or sub-groups) of the test switching means and the one controlling them or their connection Control switching means takes place.

By using the and for the core field twice In this way, the required test and control device becomes the one previously required Bypassing the classification element and thus at the same time the economic use of the core field possible for further test and control purposes. The double utilization can now be done in take the form that in one of two columns (decades) after checking on one marked core in free choice or after setting a marking selector to one specific core in controlled choice an associated core winding from a generator is fed and that when checking one of the core passing through the fed Loop also traversed core of the other decade test switch effective and affect downstream switching means.

By feeding through a core winding of the checked marked or the driven core the one decade can clearly be one identified by the same loop traversed core of the other decade or its assignment can be determined.

In the case of more than two decades, to all others from the same loop uniquely identify the cores traversed in the remaining decades or their correct ones To be able to clearly determine the assignment to one another, the feed takes place in each case via a winding of the core that was last checked or activated. Simultaneously is activated by additionally switching off all other hundreds groups (1000 participants make ten groups of hundreds; 10,000 participants hundred, etc.) a decoupling made, and thereby become. the interference or disturbance resulting from these loops Test voltages rendered harmless, which in most cases give a wrong result would deliver.

A further 1 possibility of double utilization of the core field test and control switching means is that depending on the switching state the control and test switching means of the core field each have one core winding at the same time each of the cores traversed by a common loop directly via connecting elements the control chains and indirectly in the columns not yet recorded by the test process via contacts of the switching means controlled by the test switching means to a common one Generator are switched and that depending on the induced in this loop Total voltage through coincidence of the test switching means assigned to the individual columns be effective.

The determination or identification of a particular core combination takes place in this case by a voltage comparison circuit consisting of two circuits running across a common resistor, one of which contains a generator for generating the bias voltage and a rectifier, while the other consists of the parallel connection of the individual core field loops, which are in series with the respective test switchgear. The individual core field loops each contain a rectifier and one or more pseudo-generators in the form of the cores. The bias and the Po-Jung of the rectifier are chosen so that with the Loops of test switching devices connected in series only respond if in a loop is fed in via all cores at the same time.

A further reduction in the effort can be made according to further training achieve the invention by depending on the switching state of the control and test switch means of the core field at the same time one core winding of each cores traversed by a common loop directly via connecting links the control chains and indirectly in the columns not yet recorded by the test process short-circuited via contacts of the switching means controlled by the test switching means and that depending on the effective total resistance of this Loop running alternating current circuit lying in this circuit or on Test switch means coupled to this circuit and assigned to the individual columns be effective.

This procedure is based on the principle of indirect resistance testing. When a core winding is short-circuited, the inductance and thus the impedance are reduced of the associated core made ineffective. Are in this way in the course of a wire loop all relevant toroidal inductances are switched off, then the effective total resistance is of the alternating current circuit running through this loop to the consumer acting resistance of the switched test switch means limited, so that as a result the generator voltage, which now drops in full at the consumer resistance the test switching means is effectively influenced.

All three of the above methods are examples of Realization of the general idea of the invention and offer a variety of Possibilities for the use of the core fields described at the beginning, e.g. B. for identification, for carrying out a free or occupied check, for revaluation or to check key figures in blocking devices.

FIGS. 1 to 5 show only a limited number of possible exemplary embodiments to realize the general inventive idea according to one of the three mentioned Procedure. Thus, FIG. 1 shows a core field for subscriber identification and FIG. 2 a core field for the control of key figures in locking devices according to the principle the group shutdown, furthermore FIG. 3 shows a core field for carrying out the Free or occupied control and Fig. D a core field for input identification according to the voltage comparison test principle. Finally, in Fig. 5 is the combination two core fields for revaluation according to the principle of resistance testing. In all figures is the representation of the test and control switching means and the extent necessary to understand the functional sequence of their contacts is limited.

The idea of the invention will now be explained in detail below with reference to the exemplary embodiments: In the exemplary embodiment according to FIG only two are actuated, so that corresponding identification loops 212 and 034 are closed via a generator G. The following alternating current circuits exist: 1. earth, G, ph 1, id 212, 2H, l Z, 2E-, 2 skla 11, earth, 2. earth, G, ph 1, id 034, OH, 3Z, 4E, 0 skla 11, earth in which the cores 0II, 21-1, IZ, 3Z, 2 E and 4 E are magnetized. The induced voltage starts a control chain SKH via a starting circuit An monitoring all cores in column H, which separates all loops from earth via its contacts 1 skh 11 to 0 skh 11 and allows a search selector SWH to check the cores in column H one after the other . Simultaneously with the checking of a core, the loops running through this core are closed again via one of the contacts skh 1 to skh0 of the control chain S'KH corresponding to this core, while all the loops remain separated by the other cores of the same column.

A test switch PH is thus effective, for example, on test step 2 in circuit 3. Earth, PWH 2, S'WH, ph 2, PH, earth, and the control chain SKH and thus the search selector SWH are shut down. With the contact ph i , the loop connections of the generator output G1 are switched to the generator output G2. The previously closed identification loops thus remain closed circuits, such. B. the loop 212 4. earth, ph 1, id 212, 2H, IZ, 2E, skh 2, earth. The identification loop of the subscriber 034 remains separated by the contacts 0 skh 11 and skh 0 . Furthermore, the generator G is switched to the core winding PWH2 of the tested core 2H via the contact ph2, so that the following circuit exists: 5. Earth, G, pz 1, pla 2, SWH, PWH 2, earth.

When the control chain SKH is stopped, the control chain SKZ is started.

When testing for core 1 Z, voltage from circuit 5 is induced on circuit 4 in core winding P WZ 1, and the test circuit means PZ becomes effective in circuit 6. Earth, PWZ 1, SWZ, pz 2, PZ, earth. which in turn stops the control chain SKZ and thus the search selector SWZ, disconnects circuit 5 with its contact pz 1 and closes the following circuit via its contact pz 2 while simultaneously disconnecting circuit 6: 7th earth, PWZ 1, SUZZ, pz 2, G , Earth.

When the control chain SKZ is stopped, the control chain, S'KE started, and in the manner already described, the core 2E is identified.

The core combination held in the control chains can now be transferred to a memory (not shown) for the purpose of further evaluation. After this transfer, the contact id212 is opened, and thus the circuit 4 is separated and the test switching means PH, PZ and PE are returned to the rest position. likewise the control chains and search selectors. After this request has been switched off, further participants, in this case 034, are also identified.

The same method is used in the exemplary embodiment according to FIG for checking key figures in locking devices. In this case, they are to be blocked Loops corresponding to key figures passed through the core field, with all loops a common test relay S1 with the same number of digits of the associated code numbers, S2 or S3 is assigned. The contacts of these test relays control together with the Contacts of the test switching means P 2, P 3 and the switching means controlling the scanning process S,. . . in different combinations with one another corresponding blocking switching means.

Should z. If, for example, the three-digit code 121 is checked, three selection selectors 117W 1, MW 2 and: 11W3 control cores A 1, B 2 and C 1 corresponding to the individual current impulse series of code 121 one after the other. As soon as the marker selector JIW 1 has switched to core A 1 , earth, S 3, A 1, B 2, C 1, 1 na 1, earth speaks in circuit B. Earth, which is connected to circuit 9 via core .41. Earth, G, 3p2; AIW 1, PWA1, earth is inductively coupled, the test relay S3 and with its contact 2 s 3 prepares the response circuit of a blocking relay SP. After setting the marker selector 111W2 to the core B2 speaks in the circuit 10. Earth, PWB2, AIW2, 1p2, P2, earth, which is coupled to the circuit 8 via the core B2, the test switching means P2, which with simultaneous disconnection of circuit 9 via its contacts 3 p 2 and 1 p 2 the following circuit closes 11. Earth, PWB 2, MLV 2, 1p2, 3p2, G, earth. Only when the test switching means P 3 assigned to the third digit of the three-digit code to be checked has also become effective in circuit 12. Earth, PWC 1, AI W 3, P3, Earth, does it speak in circuit 13. Earth, 2s3, 2p3, 2p2, SP, - the blocking relay SP on and prevents z. B. via its contacts, not shown, the further connection establishment.

The exemplary embodiment according to FIG. 3 for checking the vacancy or occupancy works according to the voltage check principle. For example, its closed contact t212 or t010 serves as a switching indicator for the fact that a participant is free. The contacts assigned to the individual participants, of which only four are shown, e.g. B. t111, t112, t212 and t010, contacts of the subscriber station, relay contacts of the subscriber circuit or the like can be from case to case, but also contacts in the form of transistors or similar switching elements.

When the marker selector is started via contacts 1 on and 2 on, the following circuit is initially closed: 14. Earth, G, Ue, earth.

A voltage drop across resistor R is caused via core Ue in circuit 15. Earth, Ue, Gue, R, Earth. After controlled setting of the marker selector MWH, MWZ and MWE z. B. on the cores 2 H, 1 Z and 2 E, corresponding to the number 212 of the desired subscriber, there is a current flow in the circuit 16. Earth, TV Ue when there is a common closed loop by the simultaneous feed in all three controlled cores , t 212, 2 H, 1. Z, 2 E, G 212, R, earth, if the total voltage induced in the loop at the three cores is greater than the bias voltage applied to the resistor R. In this case, a test switching means P responds via a secondary winding of the transformer hUe and an amplifier V and causes z. B. in indirectly controlled systems, the further connection establishment.

The prerequisite for a clear control is a sufficiently high one Preload, in the present embodiment a little more than twice the value the generator voltage. When using one and the same core field for control of code numbers in locking devices, similar to the embodiment according to Figure 2, Corresponding empty cores must be provided for one- or two-digit key figures whose core windings are permanently connected to the generator, so that in in each case the full total voltage is reached in the loop. the simultaneous control of the correct number of digits is achieved by the Loops with the same number of digits each have a test lead with a transformer ['(-e. A Amplifier I "and a test switch means P is assigned. The test switch means take over in this case at the same time the function of the locking switch according to Fig. 2.

The exemplary embodiment according to FIG. 4 for subscriber identification works according to the same principle of voltage comparison testing as that according to FIG. 3, but is otherwise constructed like that according to FIG. B. all cores of the column H monitoring starting circuit Atz, effective and prepares via their Koi.takt 2an the response circuits of the test switching means. At the same time, the generator G is disconnected from the loops and connected to the common feed line of the individual core windings via Kontaktlau. Furthermore, the search selector S'fi'H is started via the control chain SK H. When checking four column H, all core windings of the associated columns Z_ and F are clialtet to the generator via contacts of the control chains .S KZ and SKE.

Is z. B. as in the present embodiment the identification contact -d212 of the subscriber 212 is closed, the test on the core 2H results in a current flow in the circuit 16, so that the test switching means PH becomes effective, the control chain SKH stops and via this the control chain of the following Column, in this case the control chain SKZ, starts. With the starting of this S expensive Blanchette, the contacts are initially opened and therefore switched off skz the core windings of the generator G. The ph contact also prepares the response circuit for the PZ test switch. In the time before the search selector SIf'Z is switched to the first test step, only the I learn 2H and 2E of the three l #: erneii of the loop 212 are fed from the generator G, so that no current flow is possible in this loop due to the random circuit is. Only when the first test step in column Z is reached is the third core of the loop 212 fed and the test switch means PZ effective. In the following, the still missing core 2E is identified in the same way. lach completion t: nd Al) circuit of these requirements, other participants are also determined, so z. B. Participant 011.

The implementation example according to FIG. 5 shows the orientation of two core fields for conversion according to the principle of the indirect resistance test. After setting the blocking followers 1IH, 1IZ and ME to the corresponding Kvrne 2H, 1Z and 2E for the desired call number, e.g. 212 In circuit 17. Earth, G, I '!' e, 212, 2H, IZ, 2E, 1 Hi, 2 Zi, 1 Ei, Earth the effective total resistance through the short-circuit of the three associated core windings via the blocking followers lIH, IIZ, IE reduced in such a way that almost the full generator voltage is applied to the primary winding of the transformer VL'e and the test switching means P can become effective in the secondary circuit ske of control chains SILZ and SKE all core windings of the associated columns Hi, Zi and. Ei individually connected to a common point at the same time, namely short-circuited.

The test switching means P then starts the control chain SKH which, by means of its contacts skh, cancels the short-circuit of the associated core windings in all cores of the column Hi. If the search selector now switches to a core of the loop already checked in the first core field, e.g. B. core 1 Hi, the condition is again met that all core inductances of the cores lying on a common loop are switched ineffective, so that the test switching means assigned to the column being tested, i.e. PH, can become effective via the circuit 17 and this the Control chain .SKH and thus the search selector STVH stops. The SKZ timing chain is then started, etc.

In the example executed above, subscriber number is 212 converted in 121. The conversion of the second loop shown with the input value 010 and the output value 160 corresponds to the multiplication by the factor 16; how it is needed, for example, in a converter for billing purposes.

The connection takes place in all of the illustrated exemplary embodiments to the individual core windings via simple stepping mechanisms, which counting chains are assigned in the form of control chains and are shared by a clock circuit or the incoming control pulses. The connection can also via a contact pyramid of the counting chain relays.

In the core fields with free choice, such as B. in the core fields for identification, it is advantageous to have sequential or cyclic To use timing chains that persist in the last position assumed and if there is a new request from the last test step start the search selection in the manner described. In this case, participants need with loops through cores of higher ordinal numbers of the core field column checked first Don't wait too long if there are constant new identification requests from subscribers with loops through cores of lower ordinal numbers. to be added. Furthermore are none of the procedures when used in core fields with free choice the pure series testing is limited. You are equally with a column parallel exam feasible in each case one column or part of a column at the same time and the individual columns are checked one after the other. However, it would be it is useful for this to have a folder, for example in the form of a test multiple or the like., to provide the d (-n core with the lowest ordinal number. This folder is by no means an organ as it was at the beginning with regard to the individual closure of the core loops was mentioned: Once upon a time in the worst case only ten parts which organize the order, on the other hand prepares the insertion such a folder in the test sequence no difficulties.

In addition to the alternating magnetization of the cores, it is also a pulse excitation is possible in which the control chains are synchronized with the input pulses work.

Claims (1)

PATENT CLAIMS: 1, method for the identification or determination of core combinations in toroidal core fields, in which the individual cores are arranged in rows and columns, each column corresponds to a certain decade and each evaluation loop in each column is led through a core, the excitation state of which is determined by test switching means is, for telecommunications, in particular telephone systems, characterized in that the checking of a single of several simultaneously generally identified core combinations or evaluation loops by additional interdependent switching measures (e.g. disconnection or special identification of certain core loop groups and / or subgroups) of the Test switching means (P .... ) and the control switching means (S .... ) controlling them or their connection takes place. 2. The method according to claim 1, characterized in that in one of two columns (z. B. Z) after checking for an excited core (z. B. 1 Z) in free choice or after setting a marker selector (z. B. MW 2) on a certain core (z. B. 2B) in controlled selection an associated core winding (z. B. PWZ 1 or PWB 2 ) is fed by a generator (G) and that when checked on one of the fed Core (e.g. 1 Z or 2 B) continuous loop also passed core (e.g. 2 E or 1 C) of the other column (e.g. E or C) test switch means (e.g. PE or P3) become effective and influence downstream switching means (e.g. SEE or SP) (Fig. 1 and 2). 3. The method according to claim 1 and 2 for core fields with more than two columns, characterized in that the feed is in each case via a core winding (z. B. PWH2 or PWA 1) of the last checked marked or the last activated core (z. B. . 2H or 1 A) of a column (e.g. H or A) takes place and that the switching means (e.g. SKH or IM) controlling the scanning process of all columns that correspond to the last two (e.g. Z and E or B and C) except, when starting up, separate all closed loops and when checking for a core (e.g. 2H or 1A) only close the loops running through this core (FIGS. 1 and 2). 4. The method according to claim 1, characterized in that, depending on the switching state of the control and test switching means of the core field, one core winding (e.g. PWH2, PWZ1 and PWE2) each of a common loop (e.g. 212 ) cores passed through (e.g. 2 H, 1 Z and 2 E) directly via connecting links (e.g. NIWH, MWZ, MWE or SWII, SgtZ, SW E) of the control chains (e.g. <UH, AIZ , ME or SKH, SKZ, SKE) and indirectly in the columns (e.g. Z and E) not yet recorded by the test process via contacts (e.g. skz and ske) of the test switching means (e.g. PH and PZ) controlled switching means are connected to a common generator (G) and that depending on the total voltage induced in this loop (z. B. 212) the coincidence associated with the individual columns (z. B. H, Z, E) Test switching means (e.g. P or PH, PZ, PE) become effective (Fig. 3 and 4, voltage comparison test). 5. The method according to claim 1, characterized in that, depending on the switching state of the control and test switching means of the core field, one core winding (e.g. PWH 2, PWZ 1, PW-E 2 or JWH 1, JWZ 2, JWE1) of the cores (e.g. 21-1, 1 Z, 2E, 1 Hi, 2 Zi, 1 Ei) passed through by a common loop (e.g. 212-121) directly via connecting links (e.g. MH, MZ, 117E or SWH, SWZ, SI1'E) of the control chains (e.g. SKH, SITZ, SKE) and indirectly in the columns not yet recorded by the test process (e.g. Hi, Zi, Ei) Contacts (e.g. sklz, skz, ske) of the switching means controlled by the test switching means (e.g. I ', PH, PZ) are short-circuited and that depending on the effective total resistance of the circuit via this loop (e.g. 212 -121) running alternating current circuit, the test switching means (e.g. P or PH ) assigned to the individual columns (e.g. H, Z, E or Hi or Zi or Ei) located in this circuit or coupled to this circuit or PZ or PE ) become effective (Fig. 5, indirect resistance test). 6. The method according to any one of the preceding claims for subscriber identification by means of free choice by the connecting elements, characterized in that one of all cores (z. B. 1 H to OH) of a column (z. B. H) monitoring the start line (An) the Connection of the individual core windings (e.g. PWH 1 to PWHO) controlling switching means. (e.g. SKH) of this column (e.g. H) and that when the core winding (e.g. PWH2) of a marked core (e.g. 2H) is switched on, the assigned test switch (e.g. PH) effectively influenced, the connection element (e.g. SWH) shut down and the switching means (e.g. SKZ) controlling the DI connection in the following column (e.g. Z) is started. 7. The method according to claim 6, characterized in that to determine a marked core (z. B. 2H) the cores are checked individually one after the other. B. The method according to claim 6, characterized in that in order to determine a marked core (z. B. 2H) the cores of a column or a part of a column are checked simultaneously and the individual columns are checked one after the other. 9. The method according to claim 6 and 8, characterized in that a folder gives priority to the core with the lowest ordinal number of the cores checked at the same time. 10. The method according to claim 2 or 3 for the control of codes in locking devices, characterized in that after setting the connecting elements (e.g. MW 1, MW 2, MW 3) to a certain core combination (e.g. 1H, 2Z, 1 E) Contacts (e.g. 2 s 3, 2 p 2, 2 p 3) of the test relays assigned to the loops with the same number of digits (e.g. S3) and the existing test switch means (e.g. P2 and P3) are mutually dependent Influence blocking switching means (SP) (Fig. 2). 11. The method according to claim 4 or 5 for the control of key figures in locking devices, characterized in that the loops with the same number of digits separately assigned and individually effective test switching means are simultaneously used as blocking switching means. 12. The method according to any one of claims 2 to 5 for the conversion of key figures, characterized in that the assignment of the activated cores (e.g. 217, 1 Z, 2E) is established for an existing common loop (e.g. 212) and that as a result, the test switching means (e.g. P) which become effective, the switching means controlling the connection (e.g. SKH) of a column ( e.g. Hi) of an output core field in which the cores (e.g. 1 Hi, 2 Zi, 1 Ei) passed through by the connected loop (e.g. 212-121) can be identified (Fig . 5).