DE2019899C3 - Combined call, door intercom and opening system - Google Patents

Description

With a large number of apartments having large buildings, but increasingly also with Only a few tenants or even single-family houses are used to operate Electric door openers are used for doors and / or house doors leading to the property. To a Maintaining control over who is allowed access will be in contact with the opening systems door intercoms installed.

Door intercoms based on the intercom principle are known, in which each apartment intercom

provide a handset known from telephony technology with a microphone and remote receiver and the Door station contains a microphone in connection with a loudspeaker. Especially when using of the widely provided carbon microphones

a mostly only low volume achieved with poor speech reproduction, and such systems prove especially when using carbon microphones, as to a considerable extent susceptible to interference. The widely used systems of this type lack an interception block, so that when interrogating Mistakes and misconnections can occur and especially the conversations conducted against the conscious Eavesdropping are not secured. Eavesdropping can be done in connection with such counter-intercom systems use, but they increase both the equipment and the installation effort considerable.

The disadvantages of intercoms have to do with this

Sprecl2agen Λ ^ ΑίΓ ff "* ^" ^dcn ^ "^ sprerhstellen, significantly higher of this type have a ζΞηΐ, V ^bhcl ? ^E _h ^{plant e} "'* than in the standard systems discussed above, a power supply unit d stron ^^ οΐηΓ, ιΐ? Sr? ^ ™ '^ " ^Wohnu " g ^ss P ^r echstelIe is a Rclaismii

^ äÄ ^ ^{contact and}

its vXndutS'dntso ^ ZenTS? ^ ¹ <? f ^ "^ ^{the task is based on a} bli ^ ?? circuit anod db G

his vXndutSdntso ^ ZenTS? <? F ^ "^ ^{is TOn the task froM 'a} nt n any number Flat" ^? "? Ii · circuitry of Gatiung given to door station verwend ^ ^cases rden 2 H ^ ^{e a lo-skin} ^ n which a simple? safe operation STATION ZZ are dl unre "h Γ" Ρ ~ Γ- ^{6 'Einbezieh} "" g of deemed necessary switching functions ^ nscha w th of Trust Ϊ T ^Mlthörs P ^{erre with} minimal material and Installa-switching SprechrichtunJ that? ÜÄ '"'t'on effort made possible. According to this, this is achieved via multi-core VerbSiS ,, nl H 7 T ^{- def Erfmdun} 8> in that the to the Wohnungssjrechübermittek. Λ ^{'5 Ste "e"} "** ^dun 8 ^sIeitun 8 ^ r headquarters in this by a eleknuellen control are? Xn living" ^{leading two} speech wires of Verbinvier to seven EhSladeS erfo ^ T f' according Mftaf the RI T ^{'tnSChe switch in one the} speech frequencies lead a locking switch-on ^ a η Γ. "^" ^{Zwd SO as a} switch-on state-Sprachwendetatel ^ eÄrSLSä. ^ iS? ^ ΐ " ⁶ " ^ "DC branch are separated; the net. Besides that from EKÄ " ^ ^ohnun g ^ss P ^right ^ Hen, e with a switch-on loudspeaker used overSurweL ^ s Hvilm * '! h ^from 8 ^estattet · ^d "performed by a contact of the to-■ ches system bell"! -W "S ^{et) rdneten} speech button as well as a parallel effective apartment intercom conSfn ^ ^{men holding} contact of the relay with the speech cores Sounder: the vo ^ Wei» TS ⁸ Γ J " ^connectable ^ - Here a (.lock working W ^ cSr SJLt η ° ^h ^ * ^{5 series arrangement} connected in parallel, which consists of the jenet. In the PraTfa it has Tf A " ⁸ ^ I ^vdligen microphone loudspeaker with a so-called" sldard-An agS S'tnzah TfT ^{condenser 'and} ™ * L e.heblicher disadvantages have sots the minuelle η τ ^S' * ^ ¹ ™ ^{11, the eordnete to} 8 ^{of the} operation is very complicated, it SSID vieJ vTrschΐ Jf ^ ™ °? connected ations ^from g ^{before ligand} R ''. Those operating functions, SnSSh the _E Tnshal "P" ^? ^{656 Ma} »" ™ ^rd " ¹ ^"' ^{that about} " ^ur icn, pressing or releasing deisorechSe dl ρ ίΫ ™ ^S ° ^W ° ^h ' the ^change conversation as well make ^{it in} _u apartment communication unit and the three keys of η in mndi, the off and the opener of the door ^ ^ _t ^one means ^chaItun 8 ST '" ^{Connection with a} P ^erru " g ^further he engages. The operation requires eiMsoi! S "apartment intercoms can be handled. term guidance and significantly "Tübune UNRF UW * l T" - ^{erer V} ° ^{rtei1 this FORMATION "n} g proven experience shows older people ^ hard by £? '?' ^that '^{"de" living} "," 8 "Prechstellen hardly perform a simp-children and it hardly Look'" ^{Ur e ne} '. ^e · " ² ^!" ^Contact widening relay the possibility, for example, of a visit. the βΓ f _f ^ve ™ ^e " ^de "'? «. ^ above, this contact both the service of the system at the FinaXr, - · d t task of the self-holding of the relay after excitation. It is true that there is an order? V "" ⁴ ° ^{a 'S 3UCh the D' r} ^ chaltung the discussions! siärker. the L _aa ^ t? L · ^ ZIs M ^ Jn ^^ - ^b _u ^ek ° ^{mmen has} - ^{as a we} ^ ntal advantage

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₄₅ ssss ^{a separate wake-up} call - ^waived

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lity through v ^^^^ i ^ J ^ S ^ Z S ± "" fr, ^E V ^{St but also} - ^mÖgHch ' ^{die Ruflei} "

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The call stations have the option of moving ^ R!. ^mi * ^gle ' ^ch _c ^{fr rom to} dine; in this case

.en eavesdropping guided GespSf since ZUSS "Γα"'"ίΤ ^ ^u g ^{s INTR} closed contacts dt of jewei-

processing of further apartment ^speeches ^ neither Sn llg. ^{en Anschaltre} ^ ^s provided, which as "Wagner

can be changed, is made even more recognizable ^{mmer << dlßSe TO GIeichs} complement fomsummern

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sErecheitunß and ^ eht ίΓ " ^ΡΠ!? κ ^Γ ·?" ^ ' ^{ais actuated} · ^{So that there is only one} additional

uSdabout αϊ? vond 1 Τ "" ^Α? " ^οηΐ3ΐ < ¹ wire both establishing a connection as

S ?, SelbsthSh, ^ «£ f Α ^On iT ^nd i ^HaltI " also ^{triggered the} control of the conversation

wi d dieÄSituSr, .y> The same wire can be used to operate the door opener.

wehere wffi ^ n erhl,, I ⁸ ^ f ^ht ' ^S ° u ^{3ß 6s an} 8 ^ezo 8 ^ become, “so that by restricting the

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the hall circuit of the switch-on relay of the control center Via the switch-on relay 20, the active

sets out for its immediate fall; equal to the close relay 23 or 24 of the same

lig, the direct current source is excited by a contact of the opening button and is able to use its

Speech reversing relay actuated: the conacts of the one working contact 25 or 26 both themselves

The switching relay and the language reversing relay are to be withstood 5 as well as, in terms of alternating current, from the

formed and connected to each other that in the case of Actuate diadem II and 12 separately, the associated dei

the second switch to the microphone / loudspeaker 13 or 14 when the first is idle,

Door opener leading circuit is closed. The switch-on relay 20 is with a significant

The connection relay is expediently designed for the on-fall delay, which occurs during the speaking bringing and holding them, over the speaking io exchange conversations in each case the duration of the in one The leading DC circuit is designed in such a way that the direction should bridge calls. in the in the case of a held response, a second embodiment is the sound relay 20 in the NEN sufficient response current to receive the collector circuit of a transistor 29 provided, like. This can be achieved by the means of its base via a series resistor 30 with a a contact of the talk button caused response 15 capacitor 31 is connected, which is in connection current of a connection relay through a series resistor with the series resistor and the input resistor is limited, while the Hall circuit is the state of the transistor is a ÄC member whose Current offers a low resistance. Time constant determines the dropout delay. the

It was recognized as advantageous that the switch-on relay output of the transistor is through a capacitor

assign a contact which bridges ao 32 when it is actuated.

An extinguishing circuit is prepared, which is used to call one of the apartment telephones

on the other hand, when a call button is pressed, the switch-on relay in door station 2 switches the relevant apartment

and the call buttons 33 and 34 assigned to the two-way intercom station

Disconnects the speech connection. Acted as worthy of imitation. As a result, the line 19 is connected to the

was recognized that the switch-on relay was one of the call lines 35 and 36 arranged by means of »3, in the case of the

of an ÄC element time-dependently controlled transistor actuation of the call button 33 with the call line 35,

to be pre-assigned. The deletion of the switch-on clais can be connected. The call line 35 leads to the residential

liierbei done by reloading the capacitor. microphone unit 3 and is connected to the sound relay 23 \ er

For this purpose, the ringing voltage can, if necessary, bound, its foot point via the normally closed contact <As

a rectifier, the capacitor and / or the opening button 37 designed as a changeover switch

Base of the transistor are fed. Has proven the speaking artery 11 is connected, which in turn du'vh

it is necessary to assign contacts to the switch-on relay, a break contact of contacts 7 and a wired

which, when it drops, the normally closed contact connected to the line 18: 1.

make the causing toilet element ineffective. In the individual The over the lines 18 and 19 with exchange! > m

NEN is the invention on the basis of the description 35 acted response relay 23 begins in the dopi-. I-

of an embodiment in connection with a th rhythm of 50Hz of Netzwechselstronie- 1

its circuit illustrated drawing explained. swing, and its anchor acts as the call iih> r-

In the figure is part of a combined call, mean buzz. Correspondingly periodic \ ^ l

Door intercom and opening system shown in the circuit diagram, the normally open contact 25 of the response relay 23 at ^; > t

stelll, the control center 1, the door station 2 and two 40 and connects the relay winding periodically with ■■ ' r

Apartment intercom stations 3 and 4, the sub-Sprcchadei 12, which by capacities, bcbeispielswv -c

connected to each other by connecting lines the capacitors 10 and 38, is loaded. The

are. The connection line 5 is broken off and disconnection of these capacitors causes sp

to indicate that any current changes of the response relay 23 to the control center 1 by!

big many apartment intercoms can be switched on. 45 thus reduces narrow voltage peaks, the ι 'ι

In the control center there is a transistorized amplifier capacitor 27 on the microphone loudspeaker:

Ker6 is provided, which are transmitted via the contacts 7 of 13. During the call change

Speech reversing relay 8 in its initial position the current because of the low frequencies ho> ι

Microphone loudspeaker 9 of the door station 2 via a resistor of the capacitor 27 and J--,

a DC flow blocking capacitor 10 50 usually high lower cutoff frequency ■ -

with the speech wires U and 12 connects, of which microphone-loudspeaker 13 is not on these a · "·

from d'e microphone loudspeakers 13 and 14 that are able to work, the induced holn ■

microphone stations 3 and 4 can be supplied. Well transferred into the narrow voltage peaks and bn "-

In this case, the veins leading to the door station 2 are directed to the microphone loudspeaker 13 for addressing. ■>,

15 and 16 with the input and the speech wires 11 55 so that sufficient ringing signals are generated '

and 12 via the capacitor 10 to the output By using the response relay as a lubricant

of the amplifier 6 connected. By pressing the, a separate alarm clock ν 11

Speech reversing relay 8, the contacts 7 are moved; the additional inclusion of the microphone

switches, and by dipping the connected loudspeaker allows it to be regulated if necessary

Speech cores 11 and 12 against cores 15 and 16 60 to achieve higher signal volumes.

the direction of speech is reversed. The feeding of the Aui towards the entrance of the call becomes the Spredi

luiöffner 17 as well as the ringing circuits are switched on place3 by pressing their push-to-talk button 39

, Iuich an AC voltage source is made over the line. Contact 40 of the push-to-talk button connects

₍ cn! Hund 19. The supply of the amplifier 6 as well as the normally closed contact of the opening button 37 the

dei Reliiis, for example the speech reversing relay 8 65 speech wire II with the control wire 41. This is

as well as the switch-on relay 20 of the control center, the capacitor is initially carried out via the rectifier 42

charged by 31 smoothed by means of a charging capacitor 21 and the transistor 29 made conductive

Direct current obtained from the rectifier 22. The contact 43 of the Sprcchlaste 39 switches over

7 8

The series resistor 44dasAnsprechrelais23andieSsprech- is now held by the door opener 17 via the lines ader 12, so that the circuit of the switch-on 18 and 19 is an alternating voltage, and the door relay 20 is closed and this as well as that opened. After releasing the opening button, the connection relay 23 responds. In this case, the speech reversing relay closes, and the circuit arrangement working contact 25, which has returned to its initial protection state, bridges the series resistor 44. This prepares the and for the next use,
As a DC voltage drop within the apartment, the operation of the system explained makes the intercom 3 resulting voltage difference extremely easy, since only to speak can see the speech wires 11 and 12 so far, a talk button and to open the door an öffdaß when operating the. Talk button of another ion button are to be operated. The switching off of the apartment intercom, the remaining system after use, takes place automatically as soon as the voltage difference is insufficient, the response door of which is opened. If the system is only used for a relay via the series resistor of the contact for the inquiry from the door station, or to press the mel / talk button. So that the desired det is not after the call, the door station is blocked and safely avoided that after 15 the activation of the opening button 37 is omitted and switching on a flat intercom a second so that the manually triggered dropping of the security switches on the existing connection. switching relay 20. In this case, the system remains on

The switch-on relay switches by means of its switch until the capacitor 31 is discharged switch 45, the condenser loading the speech artery 12 and current flowing through the transistor 29 in this way capacitor 38 on one side and switches to the 10 is reduced that the switch-on relay 20 and stronger its supply voltage. By means of his arm, the connection relay was activated. The the Beitskontaktes 46 switches the switch-on relay 20, the drop-determining time constant of the means of the delay determining capacitor 31 foot capacitor 31 formed RC element can so side one, so that it can be briefly dimensioned via the rectifier 42 that only the usual listening pauses of the specified voltage is charged. Be bridged by means of the »5 exchange call. Here be switch 47 disconnects the switch-on relay so far there is a risk that the two-way conversation is already in progress rigen ringing circuit and connects the line a connection is broken. It has therefore 18, via the rectifier 49 with the capacitor, has proven successful in keeping the time constant sufficiently high, to measure the deletion of a connection by one. On the other hand, at the end of the conversation Prepare call. Finally, the 30 ches activates the option without using the door opener To give contact 40 of the speech button 39 the speech reversal, to establish a new connection, that is laisB, which by means of its contacts 7 made the directional arrangement so that when a Reversal of the voice connection causes any of the call buttons 33 or 34 to have an approximately now the door station 2 can be queried: the existing switch-on state is deleted. In the in The microphone loudspeaker 13 acts as a microphone, 35 of the example shown in the drawing, this is there output amplified by the amplifier 6 achieved that when the switch-on relay 20 is actuated Voltage through the microphone speaker 9 of the switch 47, the line 18 via a Door station is played. Rectifier 49 connects to the ÄC element. Will

When the talk button 39 is released, one of the call buttons is now actuated, so it is able to do so Contacts open, and contact 40 makes the control 40 AC voltage via the rectifier 49 wire 41 de-energized, so that the speech reversing relay can reach 8 capacitor 31 and this spontaneously drops and the discharge of the capacitor 31 is discharged, so that the resistance of the transistor 29 puts. The contacts 7 drop, and with the reverse increases and the switch-on relay 20 as well as the effective speech direction the microphone loudspeaker 9 is the same as the connection relay by throttling the holding door station 2 acts as a microphone and causes the upward current to fall there. At the same time is taken here When the call is made, speech becomes the desired intercom in the microphone loudspeaker 13 reproduced. passed so that now by pressing

Should the push-to-talk button be activated by pressing the opening button 37.

Door opener 17 is actuated, the safe and complete discharge of the

next by lifting the normally closed contact of the opening capacitor 31 during the extinguishing process, this gcsi-

voltage button of the common holding circuit of the chert that the rectifier 49 supplied

Connection relay 23 and the switch-on relay 20 under-current is directed opposite to that by means of

broke. Both relays drop out. The speech button can thus be fed via the rectifier 42

Microphone speaker 13 as well as the switch-on is. The alternating circuit feeding lines 18 and 19

Relay 23 by opening its normally open contact 55 voltage is chosen so high that a fast

25 separated from the speech vein 12, and during and complete discharge of the capacitor

toggle switch returning to its original position is chert.

45 of the switch-on relay 20 switch off the amplifier 6.

The changeover switch 47 connects tct to its output. For example, the rectifier 22

position returning, the line 13 with line 48. 60 fed with an alternating voltage of 12 volts

The normally open contact of the opening button 37 connects, so that the charging capacitor 21 is a

the speech wire II with the cross wire 41, so that the peak voltage of 16.8VoIt builds up. When loading

Language switching again, this time with the language examples of the exemplary embodiment

fallen switch-on claw 20 is actuated. One of the coils of both the switch-on relay 20 and the

its contacts 7 thereby connects the line 48 65 Aiisprcchrelais 23 a Gleiehstromwidcrsland of

with the vein 15 leading to the door station, to each of the 50 U, and enters the Anspreehspaniuinc

not only the microphone-loudspeaker 9. but 5 volts, while the waste voltage lies at 4 volts

the door opener 17 is also connected. This means that the effective

9 10

Resistances 44 of the apartment telephones should be sufficient for Jais, a response to a second incident should also have a resistance of 50 £ 2. Switching relay but safely prevented,
with there is an overall resistance when switched on. The invention can be varied further. So it stood at 150 Ω, and the supplying direct voltage can, if necessary, be divided equally between the coil resistances and the series resistor, given by the transistor 29 of 16.8 volts, and the series resistor, so that each delay of the switch-on relay, the relay may receive a voltage of 5.6VoIt. If the resistance of the transistor 29 in the conducting amplifier 6 is not necessarily switched off when not in use, the following appears to be necessary: In the usual, through the door-open response of the relay by bridging the Vor - In completed calls, the deletion of resistor 44 results in a different distribution of the voltage of existing connections as well as switching off the voltage: half of the supply voltage remains in the amplifier by pressing the opener button as a voltage drop on the switch-on relay while the relay is released. By eliminating the delay circuit, the other half of the voltage drop of the switched-on is in the few cases in which only spoken th connection relay forms and as DC voltage difference, the deletion is pending the next time a reference between the speech wires 11 and 12 is pressed. the door buttons. It is also possible, for example, with the amplifier toward the voice wire 12 to feed the ringing circuits with direct current, through the capacitor 10 against the drainage of. In this case, the ringing line is not blocked directly to the direct currents. By switching on the coil of the associated response relay, the 20 present at the charging capacitor 21 is passed through a normally closed contact of the relay, and the voltage drops due to the load on the power source. so that during the call the connection relay can, if necessary, work for the entire self-interrupter and act as a direct current-direct current supply or only for the removal buzzers. By appropriate selection of the circuit for the switch-on relay and the switch-on relay, windings and, if necessary, the connection of are effective by using additional contacts of the 25 capacitors, the switching frequency of the switch-on relay 20 series resistors and / or BeIa and thus the attainable tone can be set. It is even possible to intensify power resistances, which can also be used as zener diodes, tempe- rature, a call differentiation by means of temperature-dependent resistors or the like, so that two ringing circuits can be fed separately. But even and separately applied via separate break contacts, if the internal resistance is low, the empty voltage is closed, whereby the break contacts are bridged by a source of inception with retention of the peak chip, if necessary in connection, are omitted after the connection is made with resistors, see above that the circuit on each of the windings is half of the voltage from the apartment, from the garden or from the supply voltage, that means a maximum of 8.4VoIt. House door outgoing calls already on the basis of the call. Likewise, the intercom is operated, so the switched on can different sounds of the call and the response relay achieve the series connection of the winding, for example, that for example from one point of the further response relay with their pre-resistance by means of alternating current, from another by means of stand in parallel. The direct current is called between the speech wires.

11 and 12 effective resistance thus drops to 40. It has proven to be essential in the case of the

33 Ω, and while the systems connected to the switch-on relay ■ show that with a minimum

The current voltage rises to about 10 volts, the number of components decreases as well as with a minimum

the voltage difference between the speech wires number of connection wires an easy to use

11 and 12 to 6.6 volts. Created because of the repulsive call, door intercom and opening system Status does not apply to the activated response 45, which is due to the small number of

relay only 3.3 volts, so that the response of the design elements proves to be extremely clear

same is impossible. It is easy to use and load-bearing. The series of these significant

conditional drop in supply voltage is the real benefit is prolonged by

borrowed the voltage that was still present even lower, so simple and clear switching measures that it is safely prevented to hold the switched-on switch-on 50 eavesdropping by third parties.

1 sheet of drawings

Claims (12)

Patent claims: 1. Circuit arrangement for a combined call, door intercom and opening system with a die Power supply, amplification and / or switching processes effecting central and, with this connected via multi-core connecting cables, with at least one door station and apartment intercoms, which are each equipped with microphone loudspeakers, in which the control of the for call purposes with a Apartment intercoms equipped with sounders that can be operated via call lines from with the help of non-latching speech and release buttons in connection with connection relays, their actuation option can be blocked after the first has been addressed, characterized in that the ones leading to the speech stations (3, 4) Speech wires (11, 12) of the connecting line (5) on the central side through an electrical switch into a voice frequency leading Branch and a direct current branch characterizing the switched-on state are separated, that the connection relay (23,24) via a contact (43) of the associated push-to-talk button (39) as well a holding contact (25, 26) that operates in parallel can be connected to the speech wires (11, 12), that the series connection of the respective microphone loudspeaker (13,14) with a capacitor (27, 28) the connection relay is connected in parallel and that the call lines (35, 36) to the associated the connection relays that act as sounders are carried out. 2. Circuit arrangement according to claim 1, characterized in that the call circuits (call lines 35,36) are powered by alternating current. 3. Circuit arrangement according to claim 1 or 2, characterized in that call circles are fed with direct current and in the call lines normally closed contacts of the assigned to " Switching relays are provided. 4. Circuit arrangement according to Claims 1 to 3, characterized in that a second Contact (40) of the speech button (39) when it is actuated a control wire (41) with one of the speech wires (11) connects which, when activated, a delayed release switch-on relay (20) excited as well as the input and output of the amplifier (6) switching language change relays (8) actuated. 5. Circuit arrangement according to Claims 1 to 4, characterized in that the opening button (37), when actuated, the holding circuit of the switch-on relay (20) to the immediate fall of the same breaks and that by pressing of the language reversing relay (8) in connection with the deactivated switch-on relay on to the door opener (17) leading circuit (18,15) is closed. 6. A circuit arrangement according to claims \ to 5, characterized in that the DC circuit which brings the Anschaltreiais (23,24) to respond and holds them over the speech wires (11,12) is designed so that a second no when a response relay is held able to obtain sufficient response current. 7. Circuit arrangement according to claims, characterized characterized in that the response current caused by a contact (43) of the push-to-talk button (49) a connection relay (23) is reduced by a series resistor (44) and that the holding circuit has a lower current Offers resistance. 8. Circuit arrangement according to Claims 1 to 7, characterized in that the switch-on relay (20) has an extinguishing circuit when it is actuated prepared, which when a call button (33,34) is pressed, the switch-on relay for Waste brings and disconnects the existing intercom connection. 9. Circuit arrangement according to claims 1 to 8, characterized in that the switch-on relay (20) a transistor controlled in a time-dependent manner by means of a KC-member (condensate; 31) (20) is upstream. K). Circuit arrangement according to Claim 9, characterized in that the deletion takes place by reloading the capacitor (31). U. Circuit arrangement according to claim 4 or 10, characterized in that the capacitor (31 and / or the base of the transistor 29) the ringing voltage if necessary via a Rectifier (49) is supplied. 12. Circuit arrangement according to claims 1 to 11, characterized in that when the switch-on relay (20) drops out, the drop-out delay causing /? C-member is made ineffective by a contact of the same.