JP2005117470A - Interphone system for apartment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve speech quality of telephone conversation between a master machine and an apartment entrance machine by preventing a noise from being superimposed on a conversation signal line. <P>SOLUTION: During energization of power inside a house, a power circuit 16 of two or more master machines 1a, 1b, ... feeds each component of the master machines with the operating power fed from a commercial power supply 2 and is isolated in DC by a transformer 15. At power failure in the house, the power circuit of two or more master machines can feed each component of the master machine with operation power as an emergency electric power fed from a DC power supply unit 5 via a power line L5. As to the master machine, when there is no call from the apartment building entrance machine or when no conversation, such as in a waiting condition among two or more master machines or the master machine fed with power from the DC power supply unit is being conducted, the conversation line between the master line and a conversation signal line L1 joined to a control unit 4 is cut electrically, by opening a relay drive 14a and a relay terminal 14b. Then, noise from each part in the house (apartment house) via the power line is prevented from being superimposed between two wires of the conversation signal line. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apartment house intercom system, and more particularly, to an apartment house intercom system with improved call quality when making a call between a parent machine and an entrance hall via a call signal line.

  Conventionally, as this type of apartment house intercom system, an apartment house intercom system shown in the system configuration diagram of FIG. 3 has been proposed.

  In the collective housing intercom system shown in the system configuration diagram of FIG. 3, a plurality of master units 51a, 51b,... Provided in each dwelling unit of the collective housing are collective entrance machines from visitors at the entrance of the collective housing. In the standby state where there is no call using 53 and no telephone call is made, and when power is supplied from the commercial power supply (AC100V) 52 in the dwelling unit, the transformer 64 shown in the circuit block diagram of FIG. The commercial power supply 52 and the power supply line L55 are galvanically insulated from each other through the power supply circuit 65. On the other hand, when the above-described master units 51a, 51b,... Are in the event of a power failure in a dwelling unit, as an operation power source for notifying an emergency such as a fire that has occurred in the dwelling unit, It has been necessary to supply the operating power from the DC power supply 55 provided in the common part such as the management room to the power supply circuit 65 of the parent device via the power supply line L55.

  Note that there is no prior art document information to be described for the conventional apartment house intercom system.

  However, when applying the conventional apartment house intercom system, among the plurality of parent machines 51a, 51b,... Shown in the system configuration diagram of FIG. In the case of a power failure, not only a power supply line is formed from the DC power supply 55 to the power supply circuit 65 of the master shown in the circuit block diagram of FIG. Call signal lines (hereinafter referred to as “base station call signal lines”) L51 through the inside (not described in detail) between the two wires of L51 from each part of the building (of the housing complex) via the power line L55 Since noise is superimposed, when a specific parent device is in a call state among the other parent devices 51b except the parent device 51a, the operation power supply superimposed on the parent device side call signal line L51 is noise. There was a problem that it became a component and lowered the call quality.

  Moreover, in the conventional apartment house intercom system, there are many dwelling units in which the supply of the operating power from the commercial power source 52 shown in the system configuration diagram of FIG. A power supply line is formed from the DC power supply 55 to the power supply circuit 65 of the parent device shown in the circuit block diagram of FIG. Not only from the inside of the main unit 51a (not described in detail), but between the two wires of the main unit side call signal line L51 from each part of the building (of the apartment house) via the power line L55 Since noise is superimposed, when a specific parent device is in a call state among the other parent devices 51b except the parent device 51a, the operation power supply superimposed on the parent device side call signal line L51 is noise. Becomes a component and lowers call quality There was a point.

  The present invention has been made to solve the above-mentioned problems, and prevents noise from being superimposed on the call signal line, and calls made between the parent machine and the collective entrance machine via the call signal line. The purpose is to provide an apartment intercom system with improved call quality.

  In order to achieve the above-mentioned object, the apartment house intercom system according to the first aspect of the present invention is provided in each dwelling unit of the apartment house, makes a call, and notifies an emergency such as a fire occurring in the dwelling unit. Provided at the entrance of multiple apartments and apartment buildings, and in common areas such as collective entrance machines for communicating with the parent machine using call signal lines, and management rooms of apartment buildings And a control device for processing a communication signal between the master unit and the central entrance using the data signal line and processing an emergency notification signal. The control device and the master unit are connected to the call signal line and the data signal. Connected through a wire. The main unit is supplied with operating power from the commercial power supply in the dwelling unit when energized in the dwelling unit, and is supplied with operating power from the DC power supply as an emergency power supply provided in the common area during a power outage in the dwelling unit. A power supply circuit that is galvanically isolated and a relay for electrically disconnecting the call signal line and the master unit when a call is not being made are provided.

  In addition, the apartment house intercom system according to the second aspect of the present invention is provided in each dwelling unit of the apartment house, makes a call, and notifies a plurality of parents for notifying an emergency such as a fire occurring in the dwelling unit. Is installed at the entrance of the apartment and the apartment, and is installed at the common entrance such as the apartment entrance and the management room of the apartment to communicate with the parent machine using the call signal line. Used to control communication between the main unit and the central entrance, and a control device for processing emergency notification signals. The control unit and the main unit are connected via a call signal line and a data signal line. ing. The main unit is supplied with operating power from the commercial power supply in the dwelling unit when energized in the dwelling unit, and is supplied with operating power from the DC power supply as an emergency power supply provided in the common area during a power outage in the dwelling unit. A power supply circuit that is galvanically isolated and a relay that electrically disconnects the call signal line and the parent device when the power supply circuit is supplied with power from the dc power supply.

  According to a third aspect of the present invention, in the collective housing intercom system according to the first or second aspect of the present invention, a signal having a frequency band of 10 kHz or less is transmitted to the call signal line.

  The fourth aspect of the present invention is the collective housing intercom system according to the first or second aspect of the present invention, wherein a signal having a frequency band of 10 kHz or less is transmitted to the call signal line, and the relay terminal of the relay is the parent terminal. When the relay terminal is electrically connected between the call signal line and the master unit, the end of the call signal line is an open end.

  According to the apartment house intercom system of the present invention, the power supply circuit of the plurality of master units supplies power from the commercial power source and is galvanically isolated by the transformer to the constituent parts of the master unit when energizing the dwelling unit. Supply. On the other hand, at the time of a power failure in a dwelling unit, the power supply circuit of a plurality of master units can supply power to an operation power source as an emergency power source fed from a DC power supply device via a power line to each component of the master unit, Of the multiple master units, the master unit that is in a standby state where there is no call from the central entrance and no call is made, or the master unit that is receiving power supply from the DC power supply unit is connected to the control unit By disconnecting the call line between the call signal line and the base unit electrically by opening the relay terminal of the relay, noise from each part of the building (in the housing complex) is communicated via the power line It is possible to prevent overlapping between two wirings of the signal line.

  Further, according to the apartment house intercom system of the present invention, when the relay terminals of the relays provided in the plurality of master units are opened, the end of the call signal line becomes an open end, but the frequency band is 10 kHz or less. Termination processing of a call signal line for transmitting a signal having a special characteristic becomes unnecessary.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment to which an apartment house intercom system of the present invention is applied will be described below with reference to the drawings.

  FIG. 1 is a system configuration diagram showing an apartment house intercom system according to an embodiment of the present invention.

  The collective housing intercom system shown in the system configuration diagram of FIG. 1 is installed in each dwelling unit of the collective housing, and the inside of the dwelling unit responds to a call from a visitor at the entrance of the collective housing (hereinafter referred to as the collective entrance). Residents in the room can talk to the visitor and notify the emergency situation such as a fire in the dwelling unit (inside the dwelling unit or nearby dwelling unit) 1a, 1b, ..., commercial power supply (AC100V) 2 for supplying operating power to the base units 1a, 1b, ... when energized in the dwelling unit, and the collective housing entrance Are provided in the common entrance such as the collective entrance 3 for a visitor to call a specific resident and make a call, and the control room of the collective housing, etc. .) L1, data signal line (hereinafter referred to as master unit) A plurality of master units 1a, 1b,... And a call signal line (hereinafter referred to as an entrance side call signal line) L3, a data signal line (hereinafter referred to as “side data signal line”) that are bus-connected via L2. A control device 4 for controlling the collective entrance 3 connected via L4 (call control by signal processing, call / video transmission path control, emergency notification control, etc.); When power supply from the commercial power supply 2 to the master units 1a, 1b,... Is interrupted, power is supplied to the master unit via the power line L5. And a DC power supply device 5.

  In the system configuration diagram of FIG. 1, the base unit side call signal line L1 and the entrance unit side call signal line L3 are signal lines for transmitting a signal having a frequency band of 10 kHz or less, and one call path On the other hand, it is composed of two wires.

  In the system configuration diagram of FIG. 1, the plurality of master units 1 a, 1 b,... Have the same configuration, and the ringing sound for notifying the calling from the collective entrance machine 3 and the voice from the collective entrance machine. A loudspeaker (hereinafter referred to as a main unit loudspeaker) that outputs a received voice of a visitor or an alarm sound for notifying an emergency such as a fire occurring in a dwelling unit (inside a dwelling unit or in a neighboring dwelling unit). ) 10 and the base unit loudspeaker 10 are used for a resident to make a call, and are picked up by the base unit microphone 11 to which the resident's voice is input and a camera 33 (to be described later) of the collective entrance 3. LCD (Liquid Crystal Display), organic to display the video (image data, text data, etc.) indicating the emergency situation such as a fire that occurred in the dwelling unit (inside the dwelling unit or in the neighboring dwelling unit) EL (Electro L uminescence) and the like.

  Further, in the system configuration diagram of FIG. 1, the collective entrance 3 performs a call between a calling unit 30 that a visitor operates to call a specific resident and a resident who is a call destination of the visitor. , And a loudspeaker (hereinafter referred to as a front door loudspeaker) 32 for inputting / outputting voice (sending voice, incoming voice) for the user, and a video of the visitor who performed the call operation (the collective entrance and the set) And a camera 33 for capturing an image of the vicinity of the entrance).

  FIG. 2 is a circuit block diagram showing a configuration of a plurality of master units 1a, 1b,... In the collective housing intercom system according to the embodiment of the present invention.

  In the circuit block diagram of FIG. 2, the plurality of master units 1a, 1b,... Have the same configuration, and the master unit loudspeaker speaker 10, master unit microphone 11, monitor 12, and each component of the master unit. Control circuit 13 for controlling (call notification control by signal processing, call control, video image output control, emergency detection / notification control, etc.), and phone calls by the resident using the master speaker 10 and the master microphone 11 Relays 14a and 14b for electrically disconnecting the two wires of the base unit side call signal line L1 and the control circuit 13 (hereinafter referred to as a relay drive unit 14a and a relay) Terminal 14b), a transformer 15 for DC insulation of the operating power supplied from the commercial power sources 2, 2,... When energizing the dwelling unit, and the commercial power source 2 when energizing the dwelling unit. The rectified / smoothed operating power source fed by the transformer 15 and dc-isolated by the transformer 15 is supplied to the constituent parts of the main unit, and the DC power source 5 Is provided with a power supply circuit 16 for supplying the operating power supplied from the power supply via the power supply line L5 to each component of the parent device.

  In the apartment house intercom system according to the embodiment of the present invention configured as described above, a specific operation will be described below.

  In the system configuration diagram of FIG. 1, among the plurality of master units 1a, 1b,... Provided in each dwelling unit of the apartment house, all other master units 1b,. On the other hand, if the dwelling unit provided with the master unit 1a is not occupying, the master unit 1a shown in the circuit block diagram of FIG. In the state, the power supply circuit 16 of the parent device 1a supplies the operation power supplied from the DC power supply device 5 through the power supply line L5 to the constituent parts of the parent device, and is relay-driven by the control circuit 13. Since the part 14a is controlled to be in the OFF state and the relay terminal 14b is opened, the main unit loudspeaker speaker 10 and the main unit microphone 11 are connected via the two wires of the main unit side call signal line L1 and the control circuit 13. The call line between is electrically disconnected . Moreover, since the relay terminal 14b is opened by the control of the relay driving unit 14a in the off state, the base unit 1a in the standby state has a noise from each part in the building (of the housing complex) via the power line L5. It is possible to prevent overlapping between the two wires of the base unit side call signal line L1.

  In addition, the master unit 1b except for the master unit 1a shown in the circuit block diagram of FIG. 2 provided in each dwelling unit of the apartment is a collective entrance shown in the system configuration diagram of FIG. In a standby state where there is no call from 3 and no telephone call is made, the power supply circuits 16 (16,...) Of the other parent devices 1b,. ..) Is rectified / smoothed from an operating power source fed from DC 15 by a transformer 15 (15,...), And the rectified / smoothed operating power source is supplied to each component of the main unit. doing. Further, the power supply circuits 16 (16,...) Of the other master units 1b,... Excluding the master unit 1a are supplied with power from the DC power supply device 5 through the power supply line L5 in the standby state. Each power supply is cut off. Further, the other parent devices 1b except the parent device 1a are in the standby state, and are controlled by the relay drive unit 14a (14a,. Therefore, it is possible to prevent noise from each part in the building (of the apartment house) via the power supply line L5 from being superimposed between the two wirings of the base unit side call signal line L1.

  On the other hand, other master units 1b except the master unit 1a shown in the circuit block diagram of FIG. 2 provided in each dwelling unit of the apartment house are supplied from the commercial power source 2 (2,...). The power supply circuit 16 (16,...) Of the other master unit 1b except the master unit 1a is in the standby state as described above when the power supply of the operation power source is cut off and in the standby state as described above. The operating power supplied from the DC power supply device 5 through the power line L5 is supplied to each component of the parent device. In addition, the power supply circuit 16 (16,...) Of the other master unit 1b, except the master unit 1a, is a relay drive unit 14a (14a,. Since the relay terminals 14b (14b,...) Are respectively opened by the control of...), Noise from each part of the building (of the apartment building) via the power supply line L5 causes the main unit side call signal line L1. Can be prevented from overlapping between the two wires.

  In the standby state as described above, a visitor who is at the collective entrance is a resident who is resident in a specific dwelling unit among the dwelling units that have already entered the collective housing. Here, the system configuration diagram of FIG. When a predetermined calling operation (not detailed) is performed using the calling unit 30 of the collective entrance 3 in order to call a resident in the room where the parent device 1b is installed, A calling signal including a room number assigned in advance is transmitted to the control device 4 via the entrance side data signal line L4.

  In the system configuration diagram of FIG. 1, the control device 4 is a resident who is resident in a dwelling unit in which the master unit 1 b is installed from a visitor based on the room number included in the calling signal from the collective entrance 3. Is detected (transfer output) to all the master units 1a, 1b,... Via the master unit side data signal line L2.

  Further, in the circuit block diagram of FIG. 2, the control circuits 13 (13, 13,...) Of all the parent devices 1a, 1b,... Have been transmitted via the parent device side data transmission line L2. The room number included in the call signal is collated with the room number of the terminal itself, and only when the room number matches, the ringing sound is output from the main unit loudspeaker 10 to perform call notification. Here, only the control circuit 13 of the base unit 1b matches the room number, and the above-described calling notification is performed.

  Further, when the resident who has confirmed the above call notification appropriately responds (not detailed), the relay drive unit 14a is turned on from the off state by the control of the control circuit 13 of the base unit 1b shown in the circuit block diagram of FIG. Since the switch terminal 14b is closed, the main unit loudspeaker speaker 10 and the main unit microphone 11 used by the resident, the control circuit 13, and the main unit side call signal line L1 are connected. The control device 4 shown in the system configuration diagram of FIG. 1, the entrance microphone 31 of the collective entrance 3 and the entrance loudspeaker 32 used by the visitor via the two wires of the entrance side call signal line L3 A call line can be formed by transmitting and receiving an audio signal having a frequency band of 10 kHz or less via the formed call line.

  Further, when performing the above-described call, the base unit side call signal line L1 shown in the system configuration diagram of FIG. 1 and the circuit block diagram of FIG. 2 is connected to the power supply line L5 from the DC power supply 5 at the time of a power failure in the dwelling unit. The operating power supply as an emergency power source that is fed to the parent device in a certain standby state is not superimposed as a noise component, and the communication quality of the voice signal transmitted through the parent device side call signal line L1 is ensured. it can.

  In the circuit block diagram of FIG. 2, when the voice signal is modulated by means such as FM modulation and transmitted to the base unit side call signal line L1, the transmission frequency becomes several hundred kHz to several MHz, so that the base unit side call Since a reflected wave to the signal line L1 is generated, it is usually necessary to terminate the open end, which is the end of the base unit side call signal line L1, inside the base unit 1b. However, since the base unit side call signal line L1 transmits only a signal having characteristics such as a frequency band of 10 kHz or less, for example, a voice signal, termination processing at the open end is unnecessary.

FIG. 1 is a system configuration diagram showing an apartment house intercom system according to an embodiment of the present invention. FIG. 2 is a circuit block diagram showing the configuration of a plurality of master units in the apartment house intercom system according to the embodiment of the present invention. FIG. 3 is a system configuration diagram showing a conventional apartment house intercom system. FIG. 4 is a circuit block diagram showing a configuration of a plurality of master units in a conventional apartment house intercom system.

Explanation of symbols

1a, 1b,..., A plurality of master units 14a, relay drive unit 14b (which constitutes a relay), relay terminal 15b (which constitutes a relay) 15, transformer 16, power supply circuit 2, commercial power supply 3 ... Collective entrance machine 4 ... Control device 5 ... DC power supply L1 ... Base unit side call signal line (call signal line)
L2: Master unit data signal line (data signal line)

Claims (4)

A plurality of master units (1a, 1b,...) Provided at each dwelling unit of the apartment house to make a call and notify an emergency such as a fire that has occurred in the dwelling unit, and the entrance of the apartment house Provided in the common entrance such as the collective entrance machine (3) for making a call with the master unit using the call signal line (L1) and the management room of the collective housing, and the data signal line (L2) is used to control communication between the master unit and the central entrance, and a control device (4) for processing the emergency notification signal. Connected through the call signal line and the data signal line,
The main unit is supplied with operating power from the commercial power source (2) in the dwelling unit when energized in the dwelling unit, and is operated from a DC power supply (5) as an emergency power supply provided in the common unit during a power outage in the dwelling unit. A power supply circuit (16) that is fed with power and is galvanically isolated from the commercial power supply by a transformer (15) and electrically between the call signal line and the base unit when the call is not being performed An apartment house intercom system comprising relays (14a, 14b) for disconnecting. A plurality of master units (1a, 1b,...) Provided at each dwelling unit of the apartment house to make a call and notify an emergency such as a fire that has occurred in the dwelling unit, and the entrance of the apartment house Provided in the common entrance such as the collective entrance machine (3) for making a call with the master unit using the call signal line (L1) and the management room of the collective housing, and the data signal line (L2) is used to control communication between the master unit and the central entrance, and a control device (4) for processing the emergency notification signal. Connected through the call signal line and the data signal line,
The main unit is supplied with operating power from the commercial power source (2) in the dwelling unit when energized in the dwelling unit, and is operated from a DC power supply (5) as an emergency power supply provided in the common unit during a power outage in the dwelling unit. A power supply circuit (16) that is fed with power and is DC-isolated from the commercial power supply by a transformer (15), and the call signal line when the power supply circuit is supplied with power from the DC power supply device and A collective housing intercom system comprising relays (14a, 14b) for electrically disconnecting the master unit.   3. The collective housing intercom system according to claim 1, wherein a signal having a frequency band of 10 kHz or less is transmitted to the call signal line.   The call signal line transmits a signal having a frequency band of 10 kHz or less, the relay terminal (14b) of the relay is provided in the parent device, and the relay terminal is electrically connected between the call signal line and the parent device. 3. The collective housing intercom system according to claim 1, wherein an end of the call signal line is an open end when the line is disconnected.

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