DE1907563A1 - Circuit arrangement for checking the response of an electrical switching means - Google Patents

Description

STANDARD EIiEKTRIIC LOEEETZ 1907583

AKTIENGESELLSCHAFT .. ■

7 Stuttgart-Zuffenhausen,

Hellmuth-Hirth-Str. 42

H. Halfmann - 6
Ser.Uo.

Circuit arrangement for checking the response of an electrical switching means ■

The invention relates to a circuit arrangement for checking the response of an electrical switching means which, after responding, sehli.esst a holding circuit and interrupts the response circuit , especially for - chill control of a Coupling relay of a telephone exchange.

When a connection is established via a multi-level switching network, the settings provided for the connection are used Coupling relay controlled from the central control part and made to respond. About individual Holding circuits or a common holding circuit The energized relays selected for the connection become independent across all coupling stages held by the central control part. The speech path is' switched through.

There are now known arrangements for the connection the speech path via the contacts of these coupling relays to be able to check. For this purpose are in the

December 23, 1968

j 1007583

H. Half maun.-6
central control part has its own test circuits, which enable the switching of the speech path iron coupling stage to coupling stage "" or Control outward over the entire switching network. This type of control of the response of the coupling relays inevitably leads to an increase in the duration of the connection build-up and additional control cores between the coupling network and the central control part.

It is an object of the invention to provide a circuit arrangement to control the response of an electrical. Switching means which, after responding, closes a holding circuit and interrupts the response circuit, especially for hold-through control of a Coupling relay of a telephone exchange, too create that during the control phase of the switching means already 'the closing of the holding circuit and the opening of the response circuit determines ^ in the forced and acknowledgment procedure the duration of the Jn = control phase to the actual response time. öes Peeling agent adapts and thus at the same time a test possibility for the proper addressing of the Switching means included the circuit arrangement for Control of the response of an electrical switching device which, after responding, creates a holding circuit closes and thereby interrupts the response circuit, in particular for switching control of a Coupling relay of a telephone exchange is. according to the invention characterized in that with the response circuit of the switching means a temperature monitoring switching device is coupled, the occurrence of a current in the monitored Anspreohstromkreis notices and holds and afterwards home © !!. Switching off this current a signal as confirmation

00 98 ^ 870891

H. Halfmann - 6 ^;

for the successful response of the switching means . ". gives. Via this ÜT3e: cwachungs-Sehalten: i, nrichtung the response of a switching means can then already be determined via the response circuit ·. The confirmation signal is immediately after." received the response of the switching means. In the case of a coupling field of a telephone detection system, this type of control is easy to carry out, since the response circuits of the coupling relays go out in the central control part anyway. There is no need to check the connection in the speech path, since failure of the coupling relay contacts is unlikely and can therefore be neglected. .

laughs according to an embodiment of the circuit arrangement the invention provides that the monitoring switching device contains a switch controllable by the current of the monitored response circuit which when a current occurs, a memory flip-flop circuit is put into the working state and that when subsequent disconnection of the current from the idle state of this switch and from the working state of this Flip-flop circuit sends an acknowledgment signal via an AND circuit can be derived. The monitoring switching device therefore only gives an output signal from, if after-a current flow in the response circuit the power is also switched off again. This coincidence condition can be tapped at the switch and the flip-flop circuit of the monitoring switching device and converted into the confirmation signal via the AND circuit.

So that the monitoring switching device does not open Interfering impulses but only responds to real response current, is the further development of the circuit

009836/0691

H. Halfmann - 6
arranged so that the switch of the monitoring / control device controlled by the current of the response circuit has a response threshold.

Should several switching devices, e.g. a connection then control via the switching network of a telephone exchange, included in the control the outputs of the UKD circuits of several separate Switching means monitoring switching devices to a common XJND circuit, which only then a Confirmation signal emits when all monitoring switching devices provide a confirmation signal themselves. ,

Around. Time differences and contact bounce times of the various Equalizing and bridging switching means is part of this common AND circuit Time delay circuit connected downstream, the delayed confirmation signal of the error display device is fed. If this delayed confirmation signal remains after the control of the switching means or coupling relay off, then it is over. the fault indicator derived a fault signal.

The mandatory sequence in the circuit arrangement according to the Invention is completed by the fact that via the delayed output signal of the time delay hall, the storage flip-flop circuits of the over- ■ "." · wachungs-Schalteinrichtung resettable and the; Response circuits can be switched off centrally. To The monitoring circuits are connected to an expensive or coupling phase thus available again for a new process. ;

0 09 8 36/0691

H. Halfmann -6 ■ '. ■ The inclusion of this control arrangement in a multi-level switching network of a telephone exchange is solved in two ways by the fact that the monitoring switching devices are provided for each coupling stage and in the control part of the system with the coupling stage-individual marking wires of the coupling relays are coupled. This control requires no additional connections between the coupling field and the central control part and the output signal of the control circuits is an acknowledgment sign that enables the control circuits used in the central control part can be"

The invention is explained in more detail using an exemplary embodiment shown in the drawing, which the control of the response of coupling relays of a multi-stage switching matrix shows.

In the upper part of the drawing, the switching matrices CKV1 and DKV1 of the switching stages KC and KD of the ■ switching matrix es Ki ^{1 are} indicated. Response and hold circuits for the coupling relay KP shown. The switching stage .KC has the switching matrices CKV1 to CKVn and the switching stage KD has the switching matrices DKV1 to DKVnr. As indicated, can the switching matrix also contain an upstream Xoppelr stage KB and a downstream switching stage KD _? which can be incorporated in the same manner in the control arrangement * The actuation of corresponding contacts kh1 to khn or "kh1 to khm and k in the central control portion St and the Koppelvielfaehen the communication path via the switching network Ki ¹ and thus to be excited Koppelrelaie is in a known manner KP set

00983.670S91

. ■ &, _ 1907583

H. Halfmann - 6. .-'-.

A response circuit is closed for the coupling relays KP, which starts from the SpairraingsCjuelle -sU _:. and via uk, k-in DKVl, Jc * io> 0E? 1 -, - KP ₅ Dkp _s kh ~ 1, Bmc to earth.

At this response circuit is · in the central part ---. ■ tion part St a monitoring switching device KKc coupled. The coupling takes place via the resistor Rmc, which is looped into the control circuit of the transistor switching stage Tkc *,,

In the idle state, no current flows through the response circuit. The transistor T kc is not conductive the UUD-Sehaltung Uc is of this transistor switch = - "level, the signal ^'1 L." Supplied _a the memory flip-flop circuit FFC is in the rest position _9, the level "A" is connected to the' Signal ¹¹ O "marked _o The UHD circuit Uc does not receive a coincidence condition at the input and therefore emits the output signal ^IB 0 ⁸ⁱ from" _ ".

If current flows in the response circuit of the IC coupling relay KP of the coupling / multiple GKVt current ^ then the transistor Tkc becomes conductive and .feeds a signal ^M 0 "to the UED circuit Brought to the working position, »At the output of the '" A "stage there is the signal" i ", so that the AND circuit Uc still does not have a coincidence condition.

If the contact-kp of the coupling relay KP closes in multiple cases CKV1, then the holding circuit is closed via the "Voltage source® -U" and the sirenn contacts Strom im Anspre-chsiroiakrsis a.'bg® · =. ~ _ At di @@@ a Bohaltaustsäd iriri ä®T Srasisistpr

_ SL "

H. Halimann - 6 *

Tkc non-conductive again. Because the flip-plop attitude FFc is still in working condition, the USB circuit receives Uc coincidence control and gives an output signal L from.

The "outputs of the AND circuits Uc and Ud and the non-illustrated AND circuits of the switching stages KB and KE are all on a common UID ^Scarf: out tung Uz Only if by KE the controlled in all switching stages KB coupling relay KP his contact. kp has closed, this AND circuit Uz can be controlled. -The output signal of this UISD circuit Uz is fed to a time delay circuit TIT in order to bridge switching differences and contact bouncing of the coupling relays. The output signal of the time delay circuit TY ends immediately after the coupling relays involved respond The marking potentials earth are switched off via the control line sp, since the transistors Tc and Td are controlled to be nonconductive. The flip-flop circuits PFc and PPd in the monitoring maintenance devices KKc and KKd are switched to the Rest position reset ·. The stages "A" of these flip-flop circuits lead again d The signal "0". This also causes the AND circuits to switch

Uc and Ud the output signals. The output signal at the time delay circuit TV. is ended and the arrangement is available for a new coupling process.

If the coupling relay remains in a coupling stage KP off, then speaks in the assigned monitoring device the AND circuit does not work. The common AND circuit Uz does not receive a coincidence condition and the central confirmation signal

009836/0691

H. Halfmann ■ - 6. ':.

"remains off. The one at the output of the time delay circuit TV-connected teacher display device IA does not receive a confirmation signal during the coupling process. This is the sign that the pairing process has not expired properly. In on As is known, the fault signaling is carried out, with the switching states of the AND circuits in the monitoring switchgear can also be used to determine the meter.

8 claims

1 sheet of drawing, - 1 pig,

009836/0691

Claims (1)

. ■ ■■■ - ■ * - ■ ■ - ■■■ "... - '■■ .- 3. ■■" ■ "· 1907563 H. Halfmann - 6 patent ans ρ r ü c he rlJ circuit arrangement for controlling the response of an electrical switching means, which after responding to a. Nen holding circuit 'closes and thereby interrupts the response circuit, instes special for switching control of a coupling relay of a telephone exchange, characterized in that with the response circuit (earth ₈ Te, Emc, kh1, Dkp, KP ...) of the switching means (KP) a monitoring Sehalteinrichtung (KKc - Tkc, PPc, Uc) coupled (Rmc), which detects and holds the occurrence of a current in the üTd awakened response circuit (iPc - B "L") and when this current is switched off, a signal (ITC - "L"") as confirmation that the switching means (KP) has responded. 2β circuit arrangement according to claim T _? characterized in that .that the monitoring switching device (KKc) contains a switch (Tkc) controllable by the current of the monitored response circuit "which, when a current occurs, switches a memory-flip-flop circuit (]? Fc) to the working state (B "L") and that when the current is subsequently cut off from the idle state ("L") of this switch (Tkc) and from the working state of this flip-flop circuit (FPc - B ¹¹ I ") via an AND circuit (Uc) Confirmation signal can be derived. 5. Circuit arrangement according to Claim 1 and 2, characterized in that the switch (Tkc) of the monitoring switching device (KKc), which is controlled by the current of the response circuit, has a response threshold. December 23, 1968 ■ ■ ■ ■■ '' Vo / lg, ■. '»/. 00983.6 / 68Sl H. Halfmann -6 4β circuit arrangement according to claim 1 "to 3? Characterized in that the outputs of the OTD = circuits (Ue, Ud) of several separate switching means (KP.in CKV! Or DICVI) monitoring switching devices (KKc ₉ ..." • KKd) one control common UUD circuit (Us) _? which only emits an output signal _a when all "monitoring switching devices (KKc _s EKd) emit a confirmation signal ο - -:. ■ s - - 5. Schaltungs.ordnung according to claim 4? characterized in that the common UUD view (Uz) is followed by a time delay circuit (TV) ₉ whose delayed output signal is / is fed to the error _{display device (PA) o} ■ "." - .. 6 _c circuit arrangement according to claims 4 and 5 _s characterized in that the delayed output signal of the time delay circuit (TV) the storage Elip = flop Sehaltungen (PFc _s PPd) of the monitoring switching devices • devices (KKc _s KKd) resettable ( R) and the communication circuits can be switched centrally (Tc ₉ Td) » 7ο Circuit arrangement according to claims 5 and 6 ₉ characterized in that if the delayed output signal fails to appear, a fault signal can be derived via the fault display unit (PA). 8 »Circuit arrangement according to claim 1 to 7 ₉ thereby ge--. · Indicates. that the monitoring switchgear . gen (KKc ^ KKd) per coupling stage (KC, KD) and in the control part (Bi) of the system with ^: the. coupling stage-individual marking wires (khi to kha or Mi1 to khm) of the coupling relays (KP) are coupled _{or similar}