DE1001727B - Time switch for telecommunication systems, especially telephone systems - Google Patents

Description

The invention relates to a time switch device for telecommunications, in particular telephone systems, which is influenced by pulses transmitted by a clock generator.

In telecommunications, especially in telephone systems it is known to carry out time-limited switching measures with the aid of clock generators. Such clocks transmit at equal time intervals (e.g. 1 second, 5 seconds, 10 seconds etc.) impulses of a certain length and can thus be used as a basis for measuring time-fixed Switching operations are used. If you give these impulses to counting devices with corresponding Switching contacts are equipped, so switching jobs of a certain duration, z. B. Carry out control of any systems or monitoring devices. It is known for evaluation of the pulses sent out by the clocks as a counting and simultaneous switching device Use rotary selector of the usual type. Such an arrangement works in such a way that with the beginning of a switching or control process step by step the relevant rotary selector through the applied pulses be advanced until the switch-off is selected depending on the switching duration Switching step is reached. Switching the rotary selector to the rest position can be done by pressing the same impulses are made. The time it takes to reset the voter is in this one Case of the pulse frequency and the switching steps to be covered until the rest position is reached addicted.

Now the pulse frequency is determined by the required temporal accuracy of the respective Switching measures determined, since in many cases on a timely use of the centrally available Clock generator is dispensed with in order to keep the effort as low as possible. Wherever there are conditions allow z. B. in telephone systems, one is the already existing call and signal machines as Use clocks which, for example, have pulses at intervals of 1, 2, 5 and 10 seconds send out. In this case the highest possible pulse frequency of one pulse per second lasts the resetting of a voter in the above-mentioned manner is relatively long, so that the resetting time to shorten, special relay breaker circuits are used for resetting. this but means a further effort that eliminates the inherent disadvantage of a rotary selector, due to its relatively high effort, even enlarged. The use of a rotary selector is therefore in most cases not very economical for such time switch devices.

Time switch for telecommunication,
in particular telephone systems

Applicant:

Standard Elektrik Aktiengesellschaft,

Stuttgart-Zuffenhausen,

Hellmuth-Hirth-Str. 42

Johannes Matthieu, Stuttgart-Stammheim,

and Ernst-Dieter Dahl, Stuttgart-Zuffenhausen,

have been named as inventors

The use of the well-known selector relay instead of a rotary selector sets the cost for such a device down, but does not eliminate the disadvantage that for resetting the selector relay A certain amount of time is required in the rest position, which is due to the correspondingly high occupancy requirements can lead to losses. This reset time is even longer than with rotary dials because of the walking speed the selector relay is smaller than that of the rotary selector.

It is also known to use relay chains instead of voters. However, these have the Disadvantage that they are relatively expensive, especially when a large number of Pulses should be counted.

The object of the invention is now to provide a timer device, which to carry out the advantages of low complexity -and a short reset time unites in itself and which allows through an annealing line and a single control contact and a starter switch means, first, a temporary switching measure certain accuracy, secondly, any further actuation of the starter switch means any interruption and ■ re-initiation of the counting process while continuing the switchover measure, and thirdly, if the starter switch means is operated continuously, the switchover measure that has been initiated is maintained.

So received. '"■' ''" *. '■ ■ "' · ■■

This is achieved in that the duration of the switching means "initiated by briefly actuating a starter Switching measure 'by counting' individual pulses or groups of pulses or a com-

509768/106

Bination of both is determined with the help of counting magnets which are each provided with a pull-in and reset winding, and that any one Interruption and re-initiation of the counting process as well as continuation of the switching measure by every further actuation of the starter switch is effected in that switching means are provided which reset at the beginning of each switching action Prepare the counting magnets.

connected to the control line SL with the normally open contact & 4 earth potential and thus the extinguishing head connection LK is actuated. At the same time, the second pulses are sent to the single pulse counter EZ via the following circuit:

+, Second contact 1 ", an2 or c2, bi, j4, EZ (T), WiI, -.

At the fifth step of the single pulse counter EZ

In the following, the invention is further advanced by one step of the embodiment shown in FIG. 10, the group pulse counter GZ: explained. Only, _., . _Λ7 · _Γ ύ π \ τ, τλ, -ο

the parts necessary for understanding are shown.

The circuit arrangement relates to a timer With the tenth step of the counter EZ is over

a device for recording and playback of demand it energized for a 45-second Löschkopfanschal- 15 the circuit and the aforementioned contact tung X fF the relay. The PF relay picks up and directs the tone that serves over the telephone line and switches the group counter band via its contact a / l. It must be ensured that the duration of the second step and its contact ze; 2 of the erase head connection is at least 45, but less, and the ejection winding EZ (II) is the individual pulse than 46 seconds. To the cost of a DER 20 meters EZ back to the zero position. With the reverse connection device to keep the counter EZ as low as possible, the JF relay drops out again.

This process is repeated until the group counter reaches the ninth step and the individual pulse counter reaches the sixth step. As a result, the ^ relay is excited via the contacts es VI and gsTK , so that the jl contact causes the beta relay to drop and the connection of the erase head is terminated by removing the ground potential from the control line SL. Connected to the tape via contacts J 3 and head. The call and signal machine is switched off with every fifth individual oil, an impulse is sent to a group counter. Contact s 4 disconnects the impulse line for the. The counting magnets for the single and
Group impulses are both the same and consist of
an electromagnet with a pull-in and a
Reset winding and ten side by side 35
Neten part anchors. Through the impulsive excitation
the tightening winding are the part anchors of the series
after actuated and switch their assigned
Contacts. In doing so, the actuated part anchor loosens
the previous contact and prepares the 40 ^ relay with a delay, so that the reset circuit prepares for the pick-up of the next armature. Each one is separated by the ^ 2 contact. The fifth and tenth step of the individual pulse counter circuit arrangement is in the rest position again and the group counter receives a pulse and is immediately switched one step further to receive a new switching order. At the same time, the case will be described in Now in which

tenth step the single pulse counter is interrupted again in the 45 the erase head connection and reset a new zero position · ¹ since are directed to a timely. can. When the ZeSt use of the individual pulses is initiated when the control switchgear is actuated, the control contact sk short-Itontaktes sk is closed early to reduce the effort, so that the yiw relay is pulled after the erase head opening is limited of the .rß contact drops. Since the B relay has picked up in the interconnection through the ninth group and sixth 50, the C relay becomes a single pulse. In this switch position the quenching is excited via the contacts b5 and anS and remains over

th, the already existing call and signal machine in telephone systems is used as a clock and its 1-second contact 1 "is used for clocking.

In the timer device, the second pulses are applied to a Zählmagnet to count the individual pulses via a starter relay while expensive line via a special S SL of delete

Single pulses. As soon as the .B relay has dropped out, the two counting magnets EZ and GZ are reset via the following circuit:

+, Normally closed contact δ 6, normally open contact j2, GZ (II), EZ (II), Wi 3, -.

By resetting the counters that also falls

head is switched off and both counting magnets are activated deferred. This ensures that the erase head connection is at least 45, but less lasts than 46 seconds.

The individual circuits are now described in more detail. If the control contact sk briefly applies ground potential to the starter line AL, the starter relay An is excited and thus the 5-relay is delayed via the contact at 1, which is held by the contact b 3 itself. During the pick-up time of the J5 relay, the discharge windings of the individual and group pulse counters EZ and GZ are briefly energized, thus ensuring that the counters are reset:

the duration of the extinguishing head connection is tightened. If the control contact sk is operated again before the 45 seconds have elapsed, the ^ «relay picks up again, so that the counting magnets EZ and GZ are reset via the following circuit prepared by the C relay:

+, el, anS, GZ (II), EZ (II), Wi 3, -.

The switching circuits for the pulse counters are opened at the same time through the contacts at 2 and at 4. After the reset has been completed and the on or C relay has dropped out, the counting starts again, as already described, so that the erase head after the expiry of the next

45 seconds is switched off. If the control contact +, normally closed contact & 4, normally open contact an5, GZ (IT), _{sk ] än} g _{er a} j _{s is} closed for 45 seconds, EZ (IT), WiZ, ■ also remains. (JgJ. Erase head switched on longer and

The call and signaling machine RSM is only started via the normally closed contact s3 and the normally open contact after the control contact and b 1 have opened, 70 the relays An and B are switched off.

i 001

By changing the grouping and the time cycle or using additional counting magnets any switching times can be achieved in this way.

Claims (6)

Patent claims: 1. Time switching device for telecommunications, in particular telephone systems, which is influenced by transmitted by a time clock pulses, characterized in that the duration of such momentary actuation of a starter switch means (An) introduced switching measure by counting individual pulses or pulse groups or a combination of both with the aid of is determined by counting magnets (EZ, GZ) , which are each provided with a pull-in and reset winding, and that any interruption and re-initiation of the counting process as well as continuation of the switching measure by every further actuation of the starter switch means (An) is effected by switching means ( C relays) are provided, which prepare the resetting of the counting magnets at the beginning of each switching action. 2. Time switching device according to claim 1, characterized in that the duration of the switching measure is a multiple of the length of time of a pulse group. 3. Zaitschalteinrichtung according to claim 1, characterized in that the counting magnet for the individual pulses (EZ) with: the last pulse of one or more pulse groups is reset. 4. Time switching device according to claim 1, characterized in that switching means (^ relay) are provided which are actuated by contacts of the counting magnets after the set switching time has elapsed and thereby a termination of the relevant switching state and the reset of the counting magnets. 5. Time switching device according to claim 1, characterized in that individual pulses from one Call and signal machine are transmitted. 6. Time switching device according to claim 1, characterized in that the starting switching means (An) is controlled via a special starting line. Considered publications:
German Patent No. 861 276;
Reprint from SEG-Nachrichten, 1954, Issue 1,> The Counting Magnet ZM 53 «. 1 sheet of drawings © 609 768/106 1.57