JPH05507B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an intercom system for an apartment complex.

[Background technology]

Conventionally, as shown in FIGS. 1 and 2, this type of intercom system for apartment complexes consists of entrance lobby units 1a and 1b installed in a plurality of entrance lobbies of an apartment complex, respectively, and an administration room. The control room unit 2 installed in each unit, the housing unit 3 installed in each housing unit, and the intercoms 10, 20, 30 of each unit 1a, 1b, 2, 3 are connected to the control contact r _2a ,
An intercom communication line 4 connected in parallel via r _2b and r ₃ , and a control line 5 to which a call signal for controlling connection control contacts r _2a , r _2b , and r ₃ is transmitted in a time division multiplex manner.
Then, the unlock signal Vl generated by operating the unlock switches 32, 22 provided in the dwelling unit 3 and the control room unit 2 is sent to the entrance lobby unit 1a,
It consists of an unlock signal line 6 transmitted to the entrance lobby units 1a and 1b, and allows intercom calls to be made by calling the dwelling unit 3 or the control room unit 2 from the entrance lobby units 1a and 1b. Intercom calls can be made between the unit 3 and the unit 3. by the way,
The unlock switches 32, 22 are operated when a visitor in the entrance lobby is permitted to enter as a result of the above-mentioned intercom call, but when the unlock switches 32, 22 are operated, the unlock signal Vl is is input to the entrance lobby units 1a, 1b, the unlocking parts 7' of both entrance lobby units 1a, 1b operate simultaneously, and the electric locks 8a,
There was an inconvenience that both 8b and 8b were unlocked. In other words, the entrance door of one entrance lobby is unlocked even though there are no visitors. In addition, in the conventional example, both entrance lobby units 1
Since the intercoms 10 of A and 1B were commonly connected, there was an inconvenience that intercom calls were leaked to other entrance lobbies. In the figure, 31 is an intercom slave (door phone) installed at the entrance of each dwelling unit. Note that a transmission circuit for transmitting and receiving control signals such as calling signals is omitted.

[Purpose of the invention]

The present invention has been made in view of the above points, and its purpose is to prevent the entrance door of an entrance lobby where there are no visitors from being unlocked, and to prevent intercom calls to other entrance lobbies. An object of the present invention is to provide an intercom system for apartment buildings that does not leak.

[Disclosure of the invention]

(Embodiment) FIG. 3 shows an embodiment of the present invention. In an intercom system for an apartment complex similar to the conventional example, a call display circuit 14, an inverter circuit 15, and an AND circuit 16 are installed in the entrance lobby units 1a and 1b.
and an unlocking unit 7 consisting of an unlocking drive unit 17, which unlocks the electric lock 8a when the connection control contact _r1 is on and the unlocking signal Vl is obtained.
It's starting to unlock. In the figure, 11 is a modulation/demodulation circuit, 12 is a logic circuit, and 13 is an operation unit.
A calling signal (address data and control data) for calling a predetermined dwelling unit 3 or management room unit 2 is formed and transmitted via the modulation/demodulation circuit 11 in a time division multiplex manner. At this time, logic circuit 1
2 output turns on the connection control contact _r1 , and the call display circuit 14 indicates that the call is in progress.
Display with LED etc. At the same time, the call display circuit 14 outputs a "L" level call signal V ₀ indicating that a call is in progress _.
is inverted by the inverter circuit 15 and input to the AND circuit 16. Note that it may be displayed that a call is in progress between another entrance lobby and the management room or the dwelling unit, and in this case, it is also possible to disable the sending of a calling signal. When the unlocking signal Vl and the inverted signal _V'0 of the busy signal V0 are both at the "H" level, the output of the AND circuit ₁₆ becomes "H" level and activates the unlocking drive section 17 to unlock the electric lock 8a. . Note that the management room unit 2 and the housing unit 3 are also provided with a transmission circuit consisting of a modulation/demodulation circuit and a logic circuit, so that signals such as a calling signal and a monitoring signal can be transmitted to each other. Alternatively, power may be supplied to each unit 1a, 1b, 3 via the control line 5, and the calling signal may be transmitted using a power line carrier method.

The operation will be explained below. There is a visitor in one entrance lobby now, and entrance lobby unit 1
When the operation unit 13 of a is operated, a call signal is sent to the control line 5.
When any dwelling unit is called, the connection control contact r3 of that dwelling unit 3 is turned on, and the connection control contact _r1 of the entrance lobby unit 1a is _also turned on, and the intercom of the dwelling unit 3 is called. 30 and the intercom 10 of the entrance lobby unit 1a become ready for intercom communication. At this time, other entrance lobby unit 1b
Since connection control contact _R1 is turned off, intercom calls will not leak into this entrance lobby. Next, when the visitor is permitted to enter as a result of the intercom call, when the unlock switch 32 is operated, an unlock signal Vl is transmitted via the unlock signal line 6, but the connection control contact r ₁ is not turned on. The unlocking unit 7 of the entrance lobby unit 1a, in which the output of the call display circuit 14 is at the "L" level, operates, and the electric lock 8a is activated.
The facility is unlocked for a certain period of time, allowing visitors to enter. At this time, the unlocking unit 7 of the entrance lobby unit 1b in the entrance lobby where there are no visitors does not operate even though the unlocking signal Vl is input, and the electric lock 8a is not unlocked. Therefore, unlike the conventional example, the inconvenience of unlocking the entrance door of the entrance lobby when there are no visitors will not occur. Note that the same operations as those described above will be performed when calling the management room from the entrance lobby, making an intercom call, and performing the unlocking operation.

〔Effect of the invention〕

As described above, the present invention includes an entrance lobby unit installed in each of a plurality of entrance lobbies of an apartment complex, a management room unit installed in a management room, a housing unit installed in each housing unit, and a control room unit installed in each housing unit. An intercom communication line to which the unit's intercom is connected in parallel via a connection control contact, and a control line to which a call signal generated by a call operation by a visitor to the entrance lobby and which controls the connection control contact is transmitted in a time-division multiplex manner. In an intercom system for apartment complexes, the intercom system for apartment complexes consists of an unlocking signal line that transmits the unlocking signal generated by the operation of the unlocking switch installed in the housing unit and the control room to the entrance lobby unit. Each entrance lobby unit is equipped with an unlocking unit that unlocks the electric lock of the entrance door of the entrance lobby whose connection control contact is turned on by the call operation when a call operation is obtained. The entrance door of the entrance lobby where intercom calls are being made is unlocked, and the entrance doors of other entrance lobbies where there are no visitors are not unlocked, and intercom calls to other entrance lobbies are not unlocked. The effect is that there is no leakage.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a schematic configuration of an intercom system for apartment complexes according to the present invention, FIG. 2 is a schematic configuration diagram of a conventional example, and FIG. 3 is a block circuit diagram of essential parts of an embodiment of the present invention. 1a and 1b are entrance lobby units, 2 is a management room unit, 3 is a residential unit, 4 is a communication line, 5 is a control line, 6 is an unlocking signal line, and 7 is an unlocking unit.

Claims (1)

[Claims] 1 The entrance lobby units installed in each of the multiple entrance lobbies of an apartment complex, the control room unit installed in the management room, the housing unit installed in each housing unit, and the intercom of each unit are connected as control contacts. intercom communication line connected in parallel through the intercom, control line to which the call signal generated by the call operation of a visitor in the entrance lobby and which controls the connection control contact is transmitted in a time division multiplex manner, and the housing unit and management room. In an intercom system for apartment complexes, which consists of an unlocking signal line that transmits an unlocking signal generated by operating an unlocking switch installed in a building to an entrance lobby unit, a call operation is performed when an unlocking signal is obtained. An intercom system for an apartment complex, characterized in that each entrance lobby unit is provided with an unlocking part for unlocking the electric lock of the entrance door of the entrance lobby, the connection control contact of which is turned on by the unit.