DE1441410B2 - Circuit arrangement for combined doorbell, door intercom and opener systems - Google Patents

Description

The invention relates to a circuit arrangement for combined bell, door intercom and opener systems for single or multi-apartment or multi-storey buildings where each apartment has a Apartment intercom is equipped.

In systems of this type, the following functions must be activated from each apartment intercom be set:

1. Switching the speech amplifier on and off in the central station,

2. Transmission of the amplifier output to the loudspeaker of the switched on apartment intercom,

3. Reversal of the direction of speech,

4. Activate the door opener,

5. Apply alternating voltage to the veins for ringing.

Six wires are typically required to perform these functions: One wire to the Transmission of the control voltage, one wire to switch on the amplifier, two wires as pure Speech wires, one wire to operate the speech turn and one wire to operate the door opener.

The door station would need: Two speech wires and two door opener wires.

The object of the invention is to create a system of the type mentioned, which is structurally simple and with relatively little effort in terms of material and time to install.

This object is achieved according to the invention in that the apartment intercoms have a three-wire Riser with a voice amplifier, a switch-on relay, a speech reversing relay and a DC voltage source and a central station containing AC voltage source are connected, via a two-wire connection line with the door intercom and the door opener device connected in parallel to it is connected, and that each apartment intercom except for a microphone speaker is a hand-operated latching and has a non-latching switch-on device which meets the switching criteria for switching on the Voice amplifier, intercom and opening the front door via the three-wire riser to the central station, whereby the loudspeaker is switched on by the latching switch-on device the first and second wire of the riser is switched and one that flows through these wires Direct current pulls the switch-on relay in the central station, the first working contact of which the Speech amplifier switches on, while the second break contact is one pole of the ringing and Door opening required turns off AC voltage, and continues by means of the non-latching Switching device caused a direct current flow through the first and third wire of the riser which pulls the speech reversing relay in the central station, its first and second changeover contact the amplifier input lying on the two-wire connection line in the idle state to the first and second wire of the riser and its third and fourth changeover contact the amplifier output lying in the idle state on the first and second wire of the riser switches to the two-wire connection line, and that the other pole of the alternating voltage as a common pole for the bell contacts and the electric door opener directly on the one wire of the two-wire connecting cable is located, while one pole is in the idle state of the switch-on relay via its second break contact either via the first break contact of the speech reversing relay as a common opposite pole for the ringing on the third wire of the riser or when working of the language reversing relay via its third working contact as the opposite pole for the electric door opener is switched to the other wire of the two-wire connecting cable.

Using the drawing, the application of the invention is explained in more detail, for example.

The drawing shows the central station ZST, the door station TST and the apartment intercoms V / ST, only one of which is shown.

Each home intercom WST has a loudspeaker L, a latching switch-on device I and a non-latching switch-on device II.

The central station ZST contains the speech amplifier V, the switch-on relay RE, the speech reversing relay RS, the capacitors Cl and C 2 as well as a direct voltage source and an alternating voltage source, which are fed from the network via a transformer and rectifier.

The door station TST consists of the loudspeaker TL and the door opener TÖ. i

The system then works as described below:

A visitor wishes to speak to one of the WST intercoms. He presses the corresponding bell button on the door, for example Kl. This causes alternating current to flow through b, 4, 4, Kl, KIl, 3, rs _{v right} . The bell Kl 1 is thus operated for the duration of pressing K 1.

The switch-on device I is then switched on at the apartment intercom WST and the circuit -, 1, 1, I, L, 2, 2, RE, + is only closed.

The relay RE picks up and switches via the

Normally open contact re _i the speech amplifier V (-, _re γ μ)

The amplifier output VA is via rs ₂ , C1, 2, 2, L, I, 1, 1, C 2, rs ^ at the loudspeaker L of the home intercom WST. The amplifier output VA is blocked against direct voltage by the capacitor C1 , which is connected to the amplifier input or output in a connection soldered to wire 2 of the riser.

The amplifier input VE is via rs ₃ , 5, 5, TL, 4, 4, rsi on the door loudspeaker TL.

As a result, everything that is spoken at the TST door station can now be heard in the WST apartment intercom.

In order to reverse the speech direction, ie to speak from the home station WST to the door station TST , the non-latching switch-on device II is actuated on the home intercom WST.

Now the current flows through -, 1, 1, II, 3, 3, RS, -f. The speech reversing relay RS picks up, and its changeover contacts _{rs x} to rs ₄ swap the amplifier input and amplifier output.

The amplifier output VA is now via rs _s , 5, S, TL, 4, 4, rs ₄ on the door loudspeaker TL and the amplifier input via / -J ₁ , 3, 3, II, I, L, 2, 2, Cl, rs ₂ or via rs _v C2, 1, 1, I, L, 2, 2, Cl, rs.-, on the phonetic-

τ i U

Speaker L of the apartment intercom WST. It is now possible to speak from the apartment intercom WST to the TST door station.

If the switch-on device II of the apartment intercom WST is released, the last-mentioned circuit is interrupted, the speech reversing relay RS drops out and switches the speech direction again from the door to the apartment. Naturally, this turning process can be repeated as often as desired.

Once the conversation has ended and the door is to be opened for the visitor, the switch-on device I on the home intercom WST must first be switched off again. This interrupts the circuit for the relay RE , it drops out, the speech reversing relay RS becomes the door opener relay, and the switch-on device II becomes the door opener contact. If the switch-on device II is actuated (with the switch-on device / switched off), the circuit lets the relay RS pick up via -, 1, 1, II, 3, 3, RS, +.

This now switches via a, re ₂ , rs ₃ , 5, TO, 4, b AC voltage to the door opener, which responds and opens the door.

If the switch-on device II on the apartment intercom WST is released, the circuit for the relay RS is interrupted.

The relay drops out and the entire system is in the rest position. Now again, as described at the beginning, ring one of the apartments.

Claims (2)

Patent claims: 1. Circuit arrangement for combined doorbell, door intercom and opener systems for single or multi-apartment or multi-storey buildings, in which each apartment is equipped with an apartment intercom, characterized in that the apartment intercom (WST) via a three-wire riser (1, 2 , 3) are connected to a central station (ZST) containing a speech amplifier (F), a switch-on relay (RE), a speech reversing relay (RS) and a direct voltage source (+, -) and an alternating voltage source (a, b) , which are connected via a two-wire The connecting line (4, 5) is connected to the door intercom and the door opener device (TST) connected in parallel to it, so that each apartment intercom (WST) apart from a microphone loudspeaker (L) has a manually operated latching switch-on device (I) and a non-latching switch-on device ( II) which the switching criteria for switching on the voice amplifier (V), the two-way communication and opening the front door via d The three-wire riser cable (1, 2, 3) is transmitted to the central station (ZST) , the loudspeaker (L) being switched to the first and second wire (1, 2) of the riser cable by the latching switch-on device (I) Direct current flowing through these wires attracts the switch-on relay (RE) in the central station (ZST) , whose first working contact (re _x ) switches on the speech amplifier (V) , while the second break contact _{(re 2} ) has one pole (a) for ringing and The AC voltage required to open the door is switched off, and a direct current flow through the first and third wire (1, 3) of the riser line is also caused by means of the non-latching switch-on device (II), which causes the speech reversing relay (RS) in the central station (ZST) to pick up, the first of which and second changeover contact (rs _v rs ₂ ) the amplifier input on the two-wire connecting line (4, 5) to the first and second wire (1, 2) of the riser and its third and fourth changeover contact (rs ₃ , rs ₄ ) switches the amplifier output on the first and second wire (1, 2) of the riser line in the idle state to the two-wire connecting line (4, 5), and that the other pole (b) the AC voltage as a common pole for the bell contacts (e.g. B Kl) and the electric door opener (TO) is directly on one wire (4) of the two-wire connection line, while one pole (a) in the idle state of the switch-on relay (RE) via its second break contact (re ₀ ) either via the first break contact (rsj of the speech reversing relay (RS) as a common opposite pole for the ringing on the third wire (3) of the riser or in the working state of the speech reversing relay (RS) via its third working contact (rs _? ) as an opposite pole for the electric door opener (TO) to the other Wire (5) of the two-wire connecting cable is switched. 2. Circuit arrangement according to claim 1, characterized in that the wire (2) of the Riser in a manner known per se to the amplifier input or amplifier output is blocked in terms of direct current by a capacitor (C 1). 1 sheet of drawings