JPH031866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an intercom system for housing complexes used in housing complexes such as condominiums.

[Background technology]

Conventionally, common intercoms installed in common areas such as entrance lobbies and manager's rooms of apartment complexes such as condominiums are connected to intercoms installed individually for each unit using a common intercom line. However, in such conventional examples, as the number of residents increases and the number of intercoms for each dwelling unit increases, a switching circuit is required to switch and connect each intercom for each dwelling unit to the intercom line. The problem was that the configuration of the system became extremely complicated. Therefore, the present inventors have proposed an intercom system in which the intercom line can be switched using a power line carrier control system. Since visitors were to select the intercom for the desired residence and make a call, if a visitor spoke for a long time, the intercom line would be monopolized for a long time, and this meant that other There was a problem where visitors could no longer make calls. Furthermore, even if a visitor calls the intercom for the desired residence, the resident may not respond, and even if the visitor continues to call for a long time in such a case, the intercom line is monopolized during that time. There was a problem that other visitors could not make calls.

[Purpose of the invention]

The present invention was made in order to solve the above-mentioned problems, and automatically calls or calls after a certain period of time has passed from the start of a call or call from the lobby intercom to the residence intercom. The object of the present invention is to provide an intercom system for apartment complexes that is capable of interrupting traffic.

[Disclosure of the invention]

(Structure) As shown in FIG. 1a, the present invention connects a plurality of intercoms 1 for each dwelling unit individually provided in each dwelling unit of an apartment complex, and connects each intercom 1 for each dwelling unit to a common intercom line 2. A call changeover switch 3, a terminal 4 provided individually in each dwelling unit to control each call changeover switch 3, a signal transmission line 5 commonly connecting the terminals 4, and an intercom provided in the entrance lobby. Lobby intercom 6 connected to line 2 and lobby intercom 6
In an intercom system having a signal transmission unit 7 which is disposed close to a lobby intercom 6 and transmits a control signal for a call changeover switch 3 to a terminal 4 via a signal transmission line 5, a call is detected by a lobby intercom 6. a detection stage 8, a timer means 9 which starts a timekeeping operation based on the detection output of the call detection means 8 and generates a timer output after a certain period of time has elapsed; A call cutoff means 10 for cutting off calls with the intercom 1 is provided.

In the intercom system shown in FIG.
By pressing , a calling signal consisting of an 8-bit code signal is sent to the signal transmission line 5, and a predetermined terminal device 4 turns on the call selector switch 3 to enable a call. Further, the call detection means 8 detects the start of a call on the lobby intercom 6 by detecting the voltage of the intercom line 2, and activates the timer means 9. The timer means 9 generates a timer output after a certain period of time (for example, 3 minutes) has elapsed after the start of the call, and operates the call cutoff means 10. This call cutoff means 10 transmits a control signal to the signal transmission line 5 using, for example, a signal transmission unit 7, and switches a call changeover switch 3 that connects the lobby intercom 6 to the intercom 1 for the dwelling unit that is in use.
This is something that turns off. With this configuration, it is possible to prevent a single visitor from monopolizing the intercom line 2 by talking for a long time, and it also prevents a situation in which a visitor who comes later is forced to wait for a long time. It is possible.

Next, FIG. 1b shows the configuration of the merged invention, and in the same figure, 1a is a ringing tone generating circuit provided close to the intercom 1 for the dwelling unit, and when the calling button 13 of the keyboard 11 is pressed, When a control signal sent through the signal transmission unit 7 and the terminal device 4 is input, a ringing tone is output.
8a is a call detection means, which is connected to the intercom line 2.
The presence or absence of a call from the lobby intercom 6 is detected by detecting a voltage rise in the lobby intercom 6. Further, reference numeral 9a denotes a timer means, which generates a timer output after a certain period of time (for example, 30 seconds) has elapsed after the start of the call to operate the call stop means 10a. The call stop means 10a is the signal transmission unit 7.
A control signal is transmitted to the signal transmission line 5 using the control signal transmission line 5, and the ringing tone generating circuit 1a corresponding to the intercom 1 for the dwelling unit that is being called is stopped. With this configuration, it is possible to prevent a situation where one visitor monopolizes the intercom line 2 by calling for a long time, and a situation where a visitor who comes later is forced to wait for a long time can be prevented. can be prevented.

Note that as the call detection means 8 and the ring tone detection means 8a, in addition to the one that detects the voltage increase of the intercom line 2, it is also possible to use one that detects by a switch that the handset of the lobby intercom 6 is raised. .

(Embodiment) FIGS. 3 to 6 show an embodiment of the present invention and the combined invention. In each of the above figures, 14 is an entrance unit, which includes a lobby intercom 6, a signal transmission unit 7, a television camera 15, and the like. Reference numeral 16 denotes a control room unit, which includes a control room intercom 17, a signal transmission unit 18, a monitor television 19, a disaster prevention monitoring device 20, a monitoring display section 21, and the like. Furthermore, 22 is a home unit provided in each dwelling unit, and includes a dwelling unit intercom 1, a monitor television 23, an intercom terminal 4, a disaster prevention monitoring terminal 24, and the like. In FIG. 4, 25 is a microcomputer including a keyboard 11, and realizes the functions of timer means 9, 9a, call cutoff means 10, and call stop means 10a shown in FIGS. 1a and 1b. The microcomputer 25 also has a function of unlocking the electric lock 26 to open and close the automatic door 27, switching and controlling the call switching circuit 28 according to the control signal received by the signal transmission unit 7, and 15, and a function of transmitting a call signal input from the keyboard 11 to each dwelling unit via the signal transmission unit 7. The keyboard 11 has a numeric keypad 12, a call button 13, a housing unit number display section 29, a call display section 30, etc. When a housing unit number is input using the numeric keypad 12, it is displayed on the housing unit number display section 29, and at this time, a call button is displayed. By pressing the button 13, a calling signal is transmitted from the signal transmission unit 7 to the signal transmission line 5, and during a call, the call display section 30 is lit by the output of the call detection means 8. The call detection means 8 detects a voltage rise in the intercom line 2, and also functions as the call detection means 8a. The signal transmission unit 7 has an I/O unit connected to the microcomputer 25, a CPU unit, an interface board, and a modem connected to the signal transmission line 5. In this embodiment, the signal transmission line 5 is an AC 24V AC power supply, and the modem of the signal transmission unit 7 transmits and receives control signals and calling signals using a high frequency carrier signal superimposed on the AC power supply voltage. It's summery. Call switching circuit 28
has a first changeover switch 31 and a second changeover switch 32, and both changeover switches 31, 32
When connected as shown in FIG. 4, communication between the control room intercom 17 and the residential unit intercom 1 becomes possible. Also, the first changeover switch 3
If only 1 is connected to the opposite side of Fig. 4,
Lobby intercom 6 and residence intercom 1
It becomes possible to talk to the second changeover switch 32.
If only the control room intercom 17 and the lobby intercom 6 are connected to the side opposite to that shown in Fig. 4.
You will be able to talk to. 33 is a video transmission line, and the video signal output from the television camera 15 is amplified by a booster 34, branched by a branching unit 35, and transmitted on the video transmission line 33. Note that the signal transmission unit 7 has three modems, one of which is connected to the control room unit 16, and the other two are connected to the home units 22 with addresses 0 to 99 and 100 to 199, respectively. It is something.

Next, the control room unit 16 is designed to be able to manage three buildings, A, B, and C, at the same time, and has a call switch 36 connected to the intercom line 2 of each building and a signal transmission line 5 of each building The signal transmission unit 18 connected to the video transmission line 33 of each building, the demodulator 37 and the television monitor 1
9 etc. The signal transmission unit 18, like the signal transmission unit 7 of the entrance unit 14,
It has a modem and an interface board connected to a signal transmission line, a CPU unit, an I/O unit, etc., and the I/O unit is connected to a microcomputer 38. Reference numeral 39 denotes a keyboard, which includes a numeric keypad 40 used for inputting the housing unit number, a call button 41 used for calling the home unit 22 of the housing unit number input using the numeric keypad 40, and an electric lock 26 of the automatic door 27 to be unlocked. Unlock button 4 used to send control signals for
2, a call indicator lamp 43, an unlock indicator lamp 44, a housing unit number display section 45, and the like. The call changeover switch 36 connects the management room intercom 17 to any one of the intercom lines 2 in the A building, B building, and C building, and is controlled by the switch 46.
The control room unit 16 also includes a disaster prevention monitoring device 20 connected to a disaster prevention monitoring line 47 and a monitoring display section 21.
is provided. The disaster prevention monitoring device 20 includes a signal transmission unit 48 for receiving disaster prevention monitoring signals, a power supply unit 49, and a display driver 50.
Display on the monitoring display section 21 is performed by the display driver 50. The monitoring display section 21 includes a fire display section 51, a gas leak display section 52, a security display section 53, a building A, B, and C building display section 54, a housing unit number display section 55, and a display section 55 for building A, B, and C. Absence display portions 56, 57, 58, etc. are provided.

Furthermore, the home unit 22 includes various sensors 62 such as a fire detector 59, a gas detector 60, and a security switch 61 in addition to the intercom 1 for the dwelling unit.
When the sensor 62 operates, the sensor operation detection circuit 63 detects this and operates the sound generation circuit 64, and the speaker 65 and doorway intercom 66 notify of fire, gas leak, or crime prevention detection. It outputs voice messages. Reference numeral 67 denotes a control room input detection circuit, which operates when a call is received from the control room unit 16 and turns on contacts A, B, and C. Further, 68 is a lobby input detection circuit, which turns on contacts A, B, C, and D when a call is received from the entrance unit 14. However, when contact D turns on,
The monitor television 23 is turned on and the video transmission line 33
It displays images from the television camera 15 that are transmitted via the TV camera 15. Further, when the contact C is turned on, the ringing tone generation circuit 1a operates to generate a ringing tone. This ring tone is output from the speaker 65 and is also transmitted to the intercom line 2 via contact B.
is also output. Next, when the resident notices the ringing tone output from the speaker 65 and raises the handset 69 of the dwelling unit intercom 1, the handset-up detection circuit 70 operates and turns off contacts B and C. As a result, the ringing tone generating circuit 1a stops generating the ringing tone, and the handset 69 is connected to the intercom line 2.

When the call between the lobby intercom 6 and the residential unit intercom 1 ends, the call detection means 8 detects a voltage drop in the intercom line 2, thereby detecting the end of the call. When the end of the call is detected, a control signal is sent from the microcomputer 25 to the terminal 4 of the home unit 22 via the signal transmission unit 7, and the contacts A, B, C, and D of the home unit 22 are turned off. be. As a result, the monitor television 23 is turned off, and the handset 69 of the intercom 1 for the dwelling unit is connected to the intercom 66 for the door. Next, lobby intercom 6 and control room intercom 1
7, the end of the call is detected by the call detection means 8,
When this call end is detected, the microcomputer 2
A control signal is sent from the control unit 5 to the signal transmission unit 18 of the control room unit 16 via the signal transmission unit 7, and the control signal is sent to the control room unit 16 by the microcomputer 38 connected to the signal transmission unit 18.
The display of the call display lamp 43 and the housing unit number display section 45 are reset to the initial state. Furthermore, even when the call between the control room intercom 17 and the residential unit intercom 1 ends, the call detection means 8 detects the end of the call, and when the end of the call is detected, the microcomputer 25 A control signal is sent to the signal transmission unit 18 of the management room unit 16 and the terminal device 4 of the home unit 22 via the signal transmission unit 7, and returns the communication contacts, display section, etc. to the initial state.

〔Effect of the invention〕

As described above, the present invention provides an intercom system for an apartment complex, which includes a call detection means for detecting a call through a lobby intercom, and a timer that starts a timing operation based on the detection output of the call detection means and outputs a timer after a certain period of time has elapsed. a timer means for generating;
Since the device is equipped with a call cutoff means that cuts off the call between the lobby intercom and the residential unit intercom when the timer output of the timer means is obtained, it prevents visitors from trying to talk for a long time using the lobby intercom. However, the call is automatically cut off after a certain period of time has passed since the call started, so the intercom line is not monopolized for a long time, and visitors who arrive later can The effect is that I have never had to wait for a long time. In addition, in the combined invention, an intercom system for an apartment complex includes a call detection means for detecting a call from a lobby intercom, and a time measurement operation is started based on the detection output of the call detection means, and a timer is output after a certain period of time has elapsed. This system is equipped with a timer means for generating a timer output, and a call stop means for stopping a call from the lobby intercom when the timer output of the timer means is obtained. Even if the call continues for a long time, the call will automatically stop after a certain period of time has passed since the start of the call, so the intercom line will be monopolized for a long time. This has the effect that later visitors do not have to wait for a long time.

[Brief explanation of drawings]

Fig. 1a is a block diagram corresponding to claims showing the structure of the present invention, Fig. 1b is a block diagram corresponding to claims showing the structure of the merged invention, Fig. 2 is a voltage waveform diagram of an intercom line, and Fig. 3 is a block diagram corresponding to claims showing the structure of the present invention. FIG. 4 is a block diagram of the entrance unit same as above, FIG. 5 is a block diagram of the control room unit same as above, and FIGS. 6 a and 6 b are block diagrams of the home unit same as above. 1 is a residential unit intercom, 2 is an intercom line, 3 is a call selector switch, 4 is a terminal, 5 is a signal transmission line, 6 is a lobby intercom, 7 is a signal transmission unit, 8 is a call detection means, 9 is a timer means , 10 is call cutoff means, 1a is a ringing tone generation circuit, 8a is a call detection means, 9a is a timer means, 1
0a is a call stop means.

Claims (1)

[Scope of Claims] 1. A plurality of intercoms for each dwelling unit individually provided in each dwelling unit of an apartment complex, a call changeover switch for connecting each intercom for each dwelling unit to a common intercom line, and a call switching switch separately provided in each dwelling unit. a terminal device that controls each call changeover switch, a signal transmission line that commonly connects each terminal device, a lobby intercom installed in the entrance lobby and connected to the intercom line, and a lobby intercom located close to the lobby intercom line. In an intercom system having a signal transmission unit that transmits a control signal of a call switching switch to a terminal device via a signal transmission line,
a call detection means for detecting a call through the lobby intercom; a timer means for starting a time measurement operation based on the detection output of the call detection means and producing a timer output after a certain period of time has elapsed; An intercom system for an apartment complex, characterized in that it is provided with a call cutoff means for cutting off calls between a residential unit intercom and a residential unit intercom. 2 Multiple unit intercoms installed individually in each unit of an apartment complex, multiple ring tone generation circuits installed individually for each unit intercom, and each unit intercom connected to a common intercom line. The call selector switch to connect,
A terminal device installed individually in each dwelling unit to control each call switching switch and ring tone generation circuit, a signal transmission line that connects each terminal device in common, and a lobby device installed in the entrance lobby that connects to the intercom line. In an intercom system having an intercom and a signal transmission unit disposed close to the lobby intercom and transmitting control signals for a call changeover switch and a ring tone generating circuit to a terminal device via a signal transmission line, a lobby intercom is provided. a call detection means for detecting a call from a lobby intercom; a timer means for starting a time measurement operation based on the detection output of the call detection means and producing a timer output after a certain period of time has elapsed; 1. An intercom system for an apartment complex, comprising: a call stop means for stopping a call.