JP2006304219A - Intercom system for complex housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom system for complex housing which reduces the possibility that each resident fails to hear simultaneous broadcast. <P>SOLUTION: A housing unit 2 is provided with a bypass path for connecting an output terminal of a volume correcting section 30 to an input terminal of a communication section 24 for inputting a call transmission signal, and a simultaneous broadcast voice signal corrected in the volume correction section 30 is transmitted to a call communication path of the call transmission signal via a bypass path B. Accordingly, a simultaneous broadcast voice signal transmitted to each housing unit 2 through the call communication line La is subjected to voice correction in the volume correcting section 30 and output from a speaker 22, and the signal is also transmitted from the bypass path B to door intercom slave set 6 through a slave set connection line L3 and output from a speaker of the slave set 6. Thus, a range where the simultaneous broadcast can be heard is expanded to a common usage part such as a corridor and the possibility that each resident fails to hear simultaneous broadcast is reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is an assembly that enables communication by alternatively establishing a communication path between a common unit device installed at a common entrance of an apartment house and any one of the dwelling units installed in each dwelling unit. With regard to residential intercom systems, in particular, in addition to individual calls in which a common unit device and one dwelling unit make a one-on-one call, a plurality of dwelling units are provided by a simultaneous broadcasting device installed in a common unit or a manager's room of an apartment house. The present invention relates to an intercom system for collective housing that can broadcast audio to the machine all at once.

Conventionally, a common unit (lobby intercom) installed at the common entrance of an apartment house and capable of voice input and output, and a common unit installed at each dwelling unit of an apartment house are connected via a transmission line and shared. A plurality of dwelling units (such as an interphone master unit and a housing information panel) that establish communication paths with the shared unit device when a visitor selects a selection means (such as a numeric keypad) that the unit device has. A doorphone handset installed in each dwelling unit of a housing complex and connected via a cordless handset connection line to a dwelling unit, and transmitted to each dwelling unit installed in a common area or a manager's room of a housing complex There is provided an intercom system for collective housing provided with a simultaneous broadcasting device that is connected via a track and broadcasts audio to all or some of the dwelling units at once (for example, see Patent Document 1). .
JP-A-6-14125

  By the way, there are emergency broadcasts such as evacuation guidance in the event of a fire or earthquake in addition to daily communication items, but it is in a place different from the place where the dwelling unit is installed (eg living room) There is a risk that the resident may miss the broadcast, and it is desirable to reduce the possibility that the resident will miss the broadcast as much as possible.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an intercom system for collective housing in which the possibility that a resident will miss a broadcast is reduced.

  In order to achieve the above object, the first aspect of the present invention provides a common unit device installed at a common entrance of a housing complex and capable of inputting / outputting sound, and a common unit device installed at each dwelling unit of the housing complex. Multiple dwelling units that establish a communication path with the common unit when connected by a visitor and are selected by a visitor operating the selection means of the common unit and connected to the common unit. Installed in the department or manager's room and connected to each dwelling unit via a transmission line, and broadcasted simultaneously to some or all dwelling units, and installed in each dwelling unit An audio device that is connected to the dwelling unit of the dwelling unit via a transmission line and that transmits the sound broadcast by the simultaneous broadcasting device from the dwelling unit via the transmission line, and the transmission line is used for at least the operation of the selection means. Accompanied by individual communication The dwelling unit is composed of a control line for transmitting a control signal for instructing the start of the communication and a signal line for transmitting an audio signal. A speaker for sounding broadcast sound, individual call / broadcast switching means for selectively switching between a state in which the signal line is connected to the call means and a state in which the signal line is connected to the speaker, and a control signal transmitted via the control line Control means for controlling the individual call / broadcast switching means based on the control signal, and in each dwelling unit, a control signal instructing the start of the broadcast is transmitted via the control line and is controlled when the control signal is received. The means controls the individual call / broadcast switching means to switch the signal line and the transmission line to a state where the signal line and the transmission line are connected to the loudspeaker, and the sound device outputs the sound of the broadcast broadcast transmitted through the transmission line. And butterflies.

  According to a second aspect of the present invention, in the first aspect of the invention, the dwelling unit is provided between the individual call / broadcast switching unit and the speaker, and corrects the volume of the broadcast so that the volume of the broadcast is within a predetermined range. It is provided with.

  The invention of claim 3 is that in the invention of claim 1 or 2, the acoustic device is a door phone slave unit installed in each dwelling unit and connected to the dwelling unit via a cordless handset connection line. Features.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the acoustic device is a communication device that is installed in each dwelling unit and has a function of communicating with at least the common unit device via the dwelling unit. Features.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the acoustic device includes a speaker that is installed in each dwelling unit and that transmits the sound of the broadcast broadcast transmitted through the transmission line. Features.

  A sixth aspect of the invention is characterized in that, in any one of the first to fifth aspects of the invention, the shared device is a simultaneous broadcasting device.

  According to the first aspect of the present invention, the sound installed in each dwelling unit and connected to the dwelling unit of the dwelling unit through the transmission line and transmitted by the simultaneous broadcasting device is transmitted from the dwelling unit through the transmission line. Since the audio device is provided, the range in which the broadcast sound can be heard can be expanded to reduce the possibility that the resident will miss the broadcast.

  According to invention of Claim 2, since each dwelling unit is equipped with the volume correction | amendment means to correct | amend so that the volume of simultaneous broadcast may become the value of the predetermined range, the number of dwelling units used as a target of simultaneous broadcast, and each dwelling unit It is possible to suppress the variation in the volume of the broadcast broadcast among the plurality of dwelling units without adjusting the amplification degree of the broadcast broadcast audio signal in accordance with the wiring length to the machine.

  According to the third aspect of the present invention, the broadcast can be heard also from the residents in the common part such as the corridor by performing the broadcast from the door phone slave unit.

  According to invention of Claim 4, the range which can listen to broadcast can be expanded, and possibility that a resident will miss broadcast will be reduced.

  According to the invention of claim 5, it is possible to expand the range in which the broadcast can be heard and to reduce the possibility that the resident will miss the broadcast.

  According to the invention of claim 6, broadcasters can use broadcasts without the managers and residents returning to the manager's room, and fire department officers or police officers can broadcast broadcasts immediately in the event of an emergency such as a fire or crime. It can be performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
The structural example of the intercom system for apartment houses of Embodiment 1 of this invention is shown in FIG. In the present embodiment, a common unit device (lobby intercom) 1 installed at a common entrance of an apartment house and a plurality of dwelling units 2 installed in each dwelling unit are provided. It is connected via a transmission line. The transmission line includes a trunk line L1 connected to the lobby intercom 1 and a dwell unit separate line L2 connected to each dwelling unit 2, and further, a trunk line control for distributing the trunk line L1 to a plurality of systems (not shown). A device 3 is provided. As this transmission line, a multi-pair twisted pair cable having three or more pairs in the sheath is used. In the illustrated example, a communication line La that transmits an audio signal between the lobby intercom 1 and the dwelling unit 2; A video signal Lb for transmitting a video signal picked up by a camera (not shown) provided in the lobby intercom 1 and a control signal for designating the dwelling unit 2 selected by the selection means (described later) of the lobby intercom 1 are provided. A pair line is used for each control line Lc to be transmitted. That is, the transmission line of the illustrated example uses three pairs of pair wires. Here, the video signal transmitted through the video line Lb is frequency-modulated by the lobby intercom 1 and is demodulated by the video processing unit 12 provided in each dwelling unit 2 and displayed on the monitor unit 13 as will be described later. .

  Although not shown, the lobby intercom 1 includes a microphone and a speaker for inputting / outputting sound, a camera for imaging a visitor, a selection key having a number key for designating a dwelling unit number and a call button, and When the call button is operated after the number key is operated to select the visited unit number, the unit 2 corresponding to the unit number is selected. Here, a simultaneous broadcasting device (alarm monitoring panel) 5 is connected to the lobby intercom 1 via the communication line La and the control line Lc, and the dwelling unit number selected on the lobby intercom 1 is alerted via the control line Lc. When transmitted to the monitoring board 5, the alarm monitoring board 5 sends a control signal (call command) to the dwelling unit 2 corresponding to the dwelling unit number via the control line Lc.

  On the other hand, the dwelling unit 2 includes a microphone 21 and a speaker 22 that input and output audio, and the microphone 21 and the speaker 22 are connected to the call processing unit 24 via amplifiers 23a and 23b, respectively. Also connected to the call processing unit 24 is a two-wire / four-wire conversion unit 25 for converting the transmission paths on the reception side and the transmission side and the two-line communication line La into two-wire / four-wires through amplifiers 26a and 26b. ing. The call processing unit 24 compares the level of the voice signal (received signal) transmitted via the call line La and the level of the voice signal (transmitted signal) output from the microphone 21 to compare the call state (received state or transmitted state). When a call state is estimated, a loss is inserted into the transmission path of the transmission signal, and when a transmission state is estimated, a loss is inserted into the transmission path of the reception signal. And an echo canceler for eliminating acoustic echo generated by acoustic coupling between the microphone 21 and the speaker 22. However, since such voice switches and echo cancellers are well known in the art, detailed illustration and description of the configuration and operation are omitted. Therefore, an audio signal can be exchanged between the lobby intercom 1 and the dwelling unit 2 through the communication line La. A visitor uses the lobby intercom 1 and a resident uses the dwelling unit 2 so that the visitor and the residence Voice calls can be made with a person.

  In addition, in the dwelling unit 2, the communication line La and the video line Lb of the dwelling unit separate line L2 are transmitted through a transmission path (hereinafter referred to as a “call path”) and a video signal, respectively. A main line interface unit 14 for separating the route is provided. The transmission path of the video signal is connected to the video processing unit 12, and the communication path is connected to the call / broadcast switching unit 15. The call / broadcast switching unit 15 selectively switches between a state where the speech path connected to the trunk interface unit 14 is connected to the speech path switching unit 16 and a state where the speech path is connected to a volume correction unit 30 which will be described later. It is. Further, the communication path switching unit 16 is the same as the state in which the communication path connected to the two-wire / four-line conversion unit 25 is connected to the telephone / broadcast switching unit 15 and the state in which the communication path is connected to the handset interface unit 18 described later. It selectively switches between a state of connection to another dwelling unit (not shown) installed in the dwelling unit.

  The door phone slave unit 6 is connected to the slave unit interface unit 18 connected to the speech path switching unit 16 via the slave unit connection line L3. The doorphone child unit 6 is disposed at the entrance of each dwelling unit of the apartment house and includes a microphone and a speaker. The child unit interface unit 18 is a voice bi-directional amplifier circuit or a call for calling with the doorphone child unit 6. An open / close circuit for connecting the roads is provided. Therefore, when the speech path switching unit 16 is switched to a state in which the speech path connected to the 2-wire 4-wire conversion unit 25 is connected to the slave unit interface unit 18, between the doorphone slave unit 6 and the dwelling unit 2. Is possible. Further, the door phone slave unit 6 is provided with a television camera, and the slave unit interface unit 18 separates the audio signal and the video signal transmitted via the slave unit connection line L3, and the separated video signal is transmitted via the transmission line. It can be output to the video processing unit 12 and displayed on the monitor unit 13. Furthermore, the door phone sub unit 6 is provided with a call button, and has a function of sending a call signal to the sub unit connection line L3 when the call button is operated, and the dwell unit 2 has a notification sound when the call signal is detected. The ringing tone generated by the generation unit 27 is transmitted from the speaker 22.

  In the dwelling unit 2, a liquid crystal display or a CRT is used for the monitor unit 13. The video signal input to the dwelling unit 2 through the video line Lb is balanced-unbalanced converted by the main line interface unit 14, further amplified by an amplifier, and then frequency demodulated by the video processing unit 12. The video signal input to the dwelling unit 2 through the slave unit connection line L3 is also balanced-unbalanced converted by the slave unit interface unit 18, further amplified by an amplifier, and then frequency-demodulated by the video processing unit 12. The video signal output from the video processing unit 12 is input to the monitor unit 13, thereby displaying a video on the screen of the monitor unit 13. That is, since the image of the visitor imaged by the camera of the lobby intercom 1 or the door phone slave unit 6 is displayed on the monitor unit 13 of the dwelling unit 2, the resident in the dwelling unit can confirm the visitor. .

  In addition, the notification sound generation unit 27 generates a notification sound for notifying a call from the lobby intercom 1 or the door phone slave unit 6 and outputs the generated notification sound to the speaker 5 via the amplifier 28a. Is output as a back tone to the dwelling unit separate line L2 or the slave unit connection line L3. In other words, the back tone transmission path switching section 17 is connected to the notification sound generation section 27 via the amplifier 28b, and the back tone transmission path switching section 17 connects the back tone transmission destination to the dwelling unit line L2 and the slave unit. It switches to the line L3 alternatively.

  The dwelling unit 2 is provided with a main control unit 10 that controls the internal circuit with a CPU as a main component, and the main control unit 10 is connected to a control signal transmission / reception circuit 11 serving as an interface with the control line Lc. The control signal transmission / reception circuit 11 has a function of transmitting the control signal output from the main control unit 10 to the control line Lc and delivering the control signal received from the control line Lc to the main control unit 10.

  By the way, the dwelling unit separate line L2 is branched from the trunk line L1 via the branching device 7, and the trunk line control device 3 directly connects the trunk lines L1 of each system. Therefore, the control signal sent from the lobby intercom 1 is transmitted to all the dwelling units 2 connected to the control line Lc. Here, an address (for example, a dwelling unit number) is individually set in the main control unit 10 of the dwelling unit 2, and a control signal (call command) for designating an address is selected by selecting the address in the lobby intercom 1. It is possible to transmit from the alarm monitoring panel 5 to all the dwelling units 2 via the control line Lc. If the address included in the control signal is its own address, the main control unit 10 of the dwelling unit 2 activates the video processing unit 12 and the monitor unit 13 to display the video of the visitor captured by the camera of the lobby intercom 1 The notification sound (calling sound) generated by the notification sound generation unit 27 is transmitted from the speaker 22 while being displayed on the monitor unit 13 of the machine 2. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the call / broadcast switching unit 15 and is connected to the main line interface unit 14. The communication path is switched to a state where it is connected to the communication path switching unit 16 and the communication path switching unit 16 is controlled to connect the communication path connected to the two-wire / four-line conversion unit 25 to the calling / broadcast switching unit 15. By switching to the state and establishing a communication path with the lobby intercom 1, it is possible to make a call only between the lobby intercom 1 and the selected dwelling unit 2, and the selected dwelling unit 2 It is possible to display the visitor imaged by the camera only on the monitor unit 13. When the dwelling unit 2 selected in the lobby intercom 1 establishes a communication path with the lobby intercom 1, the end of the call using an appropriate operation button is detected in the lobby intercom 1 or dwelling unit 2. Then it ends.

  When the call button of the door phone slave unit 6 is pressed and a call signal is sent to the slave unit connection line L3, the main control unit 10 of the dwelling unit 2 that has detected the call signal causes the video processing unit 12 and the monitor unit 13 to detect the call signal. Is displayed on the monitor unit 13 of the dwelling unit 2 and the notification sound (calling sound) generated by the notification sound generation unit 27 is output from the speaker 22. Send it out. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the call / broadcast switching unit 15 and is connected to the main line interface unit 14. The communication path is switched to a state where it is connected to the communication path switching section 16 and the communication path switching section 16 is controlled so that the communication path connected to the 2-wire 4-wire conversion section 25 is connected to the slave interface section 18. By switching and establishing a communication path between the doorphone slave unit 6, a call can be made between the doorphone slave unit 6 and the dwelling unit 2, and a visitor imaged by the camera is monitored. 13 can be displayed.

  On the other hand, the alarm monitoring panel 5 is installed in a manager's room of an apartment house, etc., and has a function of calling and broadcasting to each dwelling unit 2 via the call line La, and each dwelling unit via the control line Lc. 2 has a function for instructing the start and end of broadcast. For example, when performing broadcast to all the dwelling units 2 from the alarm monitoring panel 5, a control signal (simultaneous broadcast start command) instructing the start of the broadcast from the alarm monitoring panel 5 is sent to each dwelling unit via the control line Lc. In each dwelling unit 2 that has been transmitted to the machine 2 and received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 in response to the broadcast start command, and the call connected to the main line interface unit 14 The communication path is established with the alarm monitoring board 5 by switching the path to the state connected to the volume correction unit 30, and a broadcast audio signal (hereinafter referred to as "broadcast audio signal") sent from the alarm monitoring board 5 is established. Is transmitted to each dwelling unit 2 via the communication line La. In each dwelling unit 2, the volume correction unit 30 automatically corrects the volume of the broadcast audio signal, and the volume-corrected broadcast audio signal is sent from the speaker 22.

  FIG. 2 is a block diagram showing a specific configuration of the volume correction unit 30. The volume correction unit 30 in the present embodiment includes a delay unit 31 that delays the broadcast audio signal, a variable amplifier 32 that amplifies the broadcast audio signal delayed by the delay unit 31, and a simultaneous input to the delay unit 31. An audio power estimation unit 33 that estimates the audio power (sound pressure level) of the broadcast audio signal, and an amplification degree G of the variable amplifier 32 according to the audio power of the broadcast audio signal estimated by the audio power estimation unit 33 And an amplification degree adjustment unit 34 that adjusts. The volume correction unit 30 in the present embodiment is realized by controlling the hardware of a DSP (digital signal processor) together with the call processing unit 24 and the notification sound generation unit 27 by software, but is not limited thereto. However, a CPU may be used instead of the DSP, or an analog circuit or a digital circuit may be used.

  The voice power estimation unit 33 is configured by an integration circuit or a digital filter having a characteristic that the rise is gradual and the fall is steep, and the initial (t = 0 to t1) simultaneous as shown in FIG. The long-term average value of the signal level of the broadcast audio signal is set as the audio power estimated value Pn. The amplification degree adjustment unit 34 is based on the difference between the voice power estimation value Pn output from the voice power estimation unit 33 and the voice power reference value, and the amplification degree G necessary to match the voice power estimation value Pn with the voice power reference value. And the amplification degree of the variable amplifier 32 is adjusted to the decided amplification degree G. Specifically, as shown in FIG. 3A, since the audio power of the broadcast broadcasting audio signal and the amplification degree G are in a proportional relationship (the proportionality factor is negative), the audio is based on a relational expression given in advance. The amplification degree G can be determined from the power estimated value Pn. Therefore, regardless of the transmission loss due to the wiring length from the alarm monitoring panel 5 to the individual dwelling units 2 or the number of dwelling units 2 to be broadcasted simultaneously, as shown in FIG. The volume of the broadcast audio signal can be corrected by the volume correction unit 30 to fall within the predetermined range X.

  Thus, depending on the size of the housing complex, the length of the transmission line from the alarm monitoring panel 5 to each dwelling unit 2 may range from several hundred meters to several kilometers, and the number of connected dwelling units 2 and the trunk line control Since the number of connected trunk line devices such as the device 3 varies depending on the size of the housing complex, transmission loss of the transmission line due to the impedance of the wiring, the dwelling unit 2 and the trunk line device is also deteriorated, and the volume of simultaneous broadcasting in the dwelling unit 2 is reduced. Resulting in. In addition, there is a possibility that the sound volume varies between the dwelling units 2 due to differences in the wiring length to each dwelling unit 2, the number of connected dwelling units 2, and the number of connected main line devices. However, according to the present embodiment, each dwelling unit 2 includes a volume correction unit 30 that corrects the volume of the broadcast to a value within a predetermined range. It is possible to suppress variations in the volume of the broadcast between the plurality of dwelling units 2 without adjusting the amplification level of the broadcast audio signal by the broadcast unit (alarm monitoring panel 5) according to the wiring length to each dwelling unit 2. be able to.

  By the way, in the present embodiment, a bypass path B that connects the output end of the volume correction unit 30 and the input end of the call processing unit 24 for inputting the transmission signal is provided, and the broadcast audio corrected by the volume correction unit 30 is provided. The signal is transmitted to the speech signal transmission path via the bypass path B. That is, a command to simultaneously broadcast by an audio device other than the dwelling unit 2 (in the present embodiment, the door phone slave unit 6) (hereinafter referred to as a “broadcast extension command”) is included in the broadcast start command. In this case, in each dwelling unit 2 that has received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 to connect the call path connected to the main line interface unit 14 to the volume correction unit 30. At the same time as establishing a communication path with the alarm monitoring panel 5, the communication path switching unit 16 is controlled to connect the communication path connected to the 2-wire 4-wire conversion unit 25 to the slave interface unit 18. The state is switched to establish a communication path with the door phone slave unit 6. Therefore, the broadcast broadcast audio signal transmitted to each dwelling unit 2 via the call line La is sent out from the speaker 22 after the volume is corrected by the volume correction unit 30, and the call processing unit 24 via the bypass path B. Is transmitted to the intercom unit 6 from the speech processing unit 24, the two-wire four-line conversion unit 25, the speech path switching unit 16, and the sub unit interface unit 18 via the sub unit connection line L3. It is transmitted and sent out from the speaker of the door phone slave unit 6. Note that the manager can arbitrarily select whether or not simultaneous broadcast extension commands are included in the broadcast start command and simultaneously broadcast from the doorphone slave unit 6 by operating an operation switch or the like provided on the alarm monitoring panel 5. It is like that.

  Next, the operation of the alarm monitoring panel 5 and each dwelling unit 2 when performing simultaneous broadcasting from the alarm monitoring panel 5 to a plurality of dwelling units 2 in the present embodiment will be described. First, when an administrator presses a broadcast start button (not shown) provided on the alarm monitoring panel 5 at the start of the broadcast, in the alarm monitoring panel 5, the control unit 50 transmits and receives a broadcast start command as a control signal. It transmits with respect to each dwelling unit 2 from the part 51 via the control line Lc. The control signal includes a broadcast start command and the address (unit number) of the dwelling unit 2 that is the target of the broadcast, and a broadcast extension command if necessary. However, when all the dwelling units 2 are to be broadcasted simultaneously, a special address (for example, a number not assigned to any dwelling unit 2) is specified instead of specifying the dwelling unit number of each dwelling unit 2. Thus, all the dwelling units 2 can be broadcasted simultaneously.

  The control signal transmitted from the alarm monitoring panel 5 is received by all the dwelling units 2 that are the target of simultaneous broadcasting. In the dwelling unit 2 that has received the control signal, the main control unit 10 prepares for the start of broadcast in response to the broadcast start command. That is, the main control unit 10 controls the call / broadcast switching unit 15 to switch the communication path connected to the main line interface unit 14 to the state of connecting to the volume correction unit 30 and starts the operation of the volume correction unit 30. Further, the communication path switching unit 16 is controlled to switch the communication path connected to the two-wire / four-line conversion unit 25 to a state where it is connected to the slave unit interface unit 18 so that a communication path is established between the intercom unit 6 and the intercom unit 6. Establish. Here, the main control unit 10 controls the video processing unit 12 to display characters such as “broadcast” on the monitor unit 13, and at the same time controls the notification sound generation unit 27 to send a chime sound from the speaker 22. Inform residents of the start of broadcast.

  Then, when the administrator performs broadcast using the handset, the broadcast audio signal output from the handset is transmitted to each dwelling unit 2 via the call line La. In the dwelling unit 2, the volume of the broadcast broadcast audio signal transmitted through the call line La is corrected by the volume correction unit 30, and then transmitted from the speaker 22 of the dwelling unit 2 and simultaneously through the bypass path B. The transmission signal of the transmission signal of the processing unit 24 is transmitted to the communication path, is transmitted to the door phone child device 6 via the child device connection line L3, and is transmitted from the speaker of the door phone child device 6.

  What is necessary is just to hook a handset on the alarm monitoring board 5 in order to complete | finish a broadcast. When the handset is on-hooked, a control signal (simultaneous broadcast end command) instructing the end of the broadcast is transmitted from the alarm monitoring panel 5 to each dwelling unit 2 via the control line Lc. In the dwelling unit 2 that has received the control signal, the main control unit 10 performs a process for ending the broadcast in response to the broadcast end command. That is, the main control unit 10 stops the operation of the volume correction unit 30 and controls the call / broadcast switching unit 15 to connect the call path connected to the main line interface unit 14 to the call path switching means 16. To return to the standby state.

  As described above, according to the present embodiment, the doorphone slave unit 6 installed in each dwelling unit is an acoustic device, and the broadcast audio signal transmitted from the alarm monitoring panel 5 is transmitted from the dwelling unit 2 to the slave unit connection line L3 ( Since the broadcast sound is transmitted from the speaker of the door phone slave unit 6 via the transmission line), the range in which the broadcast sound can be heard is set in a common part such as a corridor. It is possible to reduce the possibility that residents will miss the broadcast.

(Embodiment 2)
The structural example of the intercom system for apartment houses of Embodiment 2 of this invention is shown in FIG. However, since the basic configuration of the present embodiment is almost the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  In the first embodiment, the door phone slave unit 6 is used as an audio device. However, the present embodiment is characterized in that another dwelling unit installed in the dwelling unit is used in the audio device. Here, the dwelling unit 2 connected to the dwelling unit separate line L2 will be referred to as a parent unit, and another dwelling unit connected to the dwelling unit separate line L2 via the parent unit 2 will be referred to as a sub-master unit 2 '. However, the configuration of the secondary master unit 2 ′ is substantially the same as that of the master unit 2 except that the slave unit interface unit 18 and the volume correction unit 30 are not provided.

  The master unit 2 includes a transmission line L4 that connects the output terminal of the volume correction unit 30 and the speaker of the sub-master unit 2 ′, a switch SW1 that is inserted into the transmission line L4 and turned on / off by the main control unit 10, and a switch And an amplifier 40 that is inserted into the transmission line L4 between the SW1 and the secondary master unit 2 ′ and amplifies the audio signal for broadcast.

  Thus, when the broadcast extension command is included in the broadcast start command, in each master unit 2 that has received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 to control the main line interface. The communication path connected to the unit 14 is switched to a state where it is connected to the volume correction unit 30 to establish a communication path with the alarm monitoring panel 5, and at the same time, the switch SW1 is turned on and the communication path via the transmission line L4 is established. Is established with the secondary master unit 2 ′. Therefore, the audio signal for simultaneous broadcasting transmitted to each dwelling unit 2 via the call line La is sent from the speaker 22 after the volume correction unit 30 corrects the volume, and at the same time, the secondary master unit 2 via the transmission line L4. It is also transmitted to the 'speaker and the broadcast sound is transmitted from the speaker of the sub-master 2'.

  As described above, according to the present embodiment, the secondary master unit 2 ′ installed in each dwelling unit is an acoustic device, and the broadcast audio signal transmitted from the alarm monitoring panel 5 is transmitted from the master unit 2 via the transmission line L4. Since the broadcast sound is transmitted from the speaker of the secondary master unit 2 ′ to the secondary master unit 2 ′, the range in which the broadcast voice can be heard is expanded and the resident broadcasts the broadcast. The possibility of being missed can be reduced. In addition to the secondary master unit 2 ′, the door phone slave unit 6 may be used as an audio device at the same time as in the first embodiment.

(Embodiment 3)
The structural example of the intercom system for apartment houses of Embodiment 3 of this invention is shown in FIG. However, since the basic configuration of the present embodiment is almost the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  In the first embodiment, the door phone sub-unit 6 and the sub-master unit 2 ′ in the second embodiment are used as the audio devices. However, in this embodiment, the place where the dwelling unit (master unit) 2 is installed in the dwelling unit (for example, the living room) ) Is characterized in that an additional speaker SP installed in a place (for example, a bedroom, etc.) is used for an audio device.

  The dwelling unit 2 includes a transmission line L5 that connects the output terminal of the volume correction unit 30 and the extension speaker SP, a switch SW2 that is inserted into the transmission line L5 and is turned on / off by the main control unit 10, and the switch SW2 and the extension speaker. And an amplifier 41 which is inserted into the transmission line L5 between the SP and amplifies the broadcast audio signal.

  Thus, when the broadcast extension command is included in the broadcast start command, in each dwelling unit 2 that has received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 to control the main line interface. The communication path connected to the unit 14 is switched to a state where it is connected to the volume correction unit 30 to establish a communication path with the alarm monitoring panel 5, and at the same time, the switch SW2 is turned on and the communication path via the transmission line L5 is established. Is established with the additional speaker SP. Accordingly, the broadcast broadcast audio signal transmitted to each dwelling unit 2 via the call line La is sent from the speaker 22 after the volume correction by the volume correction unit 30, and to the additional speaker SP via the transmission line L5. Is also transmitted and broadcast broadcast sound is transmitted from the additional speaker SP.

  As described above, according to the present embodiment, the extension speaker SP installed in each dwelling unit is used as an audio device, and a broadcast audio signal transmitted from the alarm monitoring panel 5 is added from the dwelling unit 2 via the transmission line L5. Since it is transmitted to the speaker SP and the broadcast sound is transmitted from the additional speaker SP, the range in which the broadcast sound can be heard is expanded to reduce the possibility that the resident will miss the broadcast. Can do. In addition to the extension speaker SP, the door phone slave unit 6 and the sub master unit 2 'may be used simultaneously as an audio device as in the first and second embodiments.

(Embodiment 4)
The structural example of the intercom system for apartment houses of Embodiment 4 of this invention is shown in FIG. In the first to third embodiments, the alarm monitoring panel 5 is a broadcast device. However, the present embodiment is characterized in that the broadcast interphone 1 can perform the broadcast. However, since the basic configuration of the present embodiment is substantially the same as that of the third embodiment, the same reference numerals are given to common components, and illustration and description thereof are omitted as appropriate.

  The alarm monitoring panel 5 includes a control unit 50 having a CPU as a main component, a control signal transmission / reception unit 51 serving as an interface between the control unit 50 and the control line Lc, a telephone handset (handset) 52, and a transmission Amplifiers 53a and 53b for amplifying signals and received signals, a two-wire four-wire converter 54 for converting two transmission lines and two transmission lines on the reception side and transmission side, and two communication lines La, and a handset 52 A state in which the transmission path is connected to the call line La via the 2-wire 4-line conversion unit 54, a state where the transmission path is connected to the call line La via the amplifier 56 without passing through the 2-wire 4-line conversion unit 54, and the call line La The communication / broadcast switching unit 55 that selectively switches to the unconnected state, the state in which the communication line La connected to the trunk line control device 3 is connected to the two-wire / four-line converter 54 and the amplifier 56 and the lobby intercom 1 Connected call line La A lobby call / dwelling unit call switching unit 57 that selectively switches to a connected state, and a state where the call line La connected to the lobby intercom 1 is connected to the lobby call / dwelling unit call switching unit 57 and an input terminal of the amplifier 56. A lobby call / broadcast switching unit 58 that selectively switches to a connected state is provided. Although not shown, the alarm monitoring panel 5 is provided with a number key for designating a dwelling unit number and a selection means having a call button, and an administrator operates the number key to select any dwelling unit number. If the dwell unit 2 corresponding to the dwelling unit number is selected by operating the call button after selection, a communication path is formed between the selected dwelling unit 2 and only the dwelling unit 2 is connected to the dwelling unit 2 by the handset 52. You can make a call.

  The lobby intercom 1 includes a control unit 60 having a CPU as a main component, a control signal transmission / reception unit 61 serving as an interface between the control unit 60 and the control line Lc, a microphone 62 and a speaker 63 for inputting / outputting sound, and a microphone 62. And a speaker processing unit 65 connected to the speaker 63 via amplifiers 64a and 64b, respectively, and a communication line 65 connected to the call processing unit 65 via amplifiers 64c and 64d. A two-line four-line conversion unit 66 that converts the line La to two-line four-line, a TV camera 67 that images a visitor, and a video signal obtained by frequency-modulating an image captured by the TV camera 67 via a video line Lb The video processing unit 68 to be output to the control device 3 and the operation switches including number keys and call buttons are provided, and the operation input of each operation switch is output to the control unit 60. And an operation portion 69 that.

  When an individual call is made between the lobby intercom 1 and any one of the dwelling units 2, when the visitor operates the number key of the operation unit 69 and selects the address of any dwelling unit 2, the control unit 60 selects it. A control signal (call command) for designating the designated address is transmitted to the alarm monitoring panel 5 and all the dwelling units 2 via the control line Lc. Upon receiving the call command, the control unit 50 of the alarm monitoring panel 5 controls the lobby call / dwelling unit call switching unit 57 to change the call line La connected to the trunk line control device 3 to the call line La ( The connection to the lobby call / broadcast switching unit 58) is switched to a state of connection, and the call line La connected to the lobby intercom 1 is connected to the lobby call / dwelling unit call switching unit 57 by controlling the lobby call / broadcast switching unit 58. The communication line La to which the lobby intercom 1 is connected is connected to the communication line La of the trunk line L1 by switching to the state to be performed. On the other hand, if the address included in the control signal is its own address, the main control unit 10 of the dwelling unit 2 activates the video processing unit 12 and the monitor unit 13 and takes a visitor imaged by the TV camera 67 of the lobby intercom 1. Is displayed on the monitor unit 13 of the dwelling unit 2, and the notification sound (calling sound) generated by the notification sound generation unit 27 is transmitted from the speaker 22. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the call / broadcast switching unit 15 and the communication path switching unit 16 to control the lobby. A communication path can be established between the intercom 1 and the telephone can be communicated only between the lobby intercom 1 and the selected dwelling unit 2, and only the selected dwelling unit 2 is captured by the TV camera 67. The visitors can be displayed on the monitor unit 13.

  When an individual call is made between the alarm monitoring panel 5 and any one of the dwelling units 2, the controller 50 selects the address of any dwelling unit 2 by operating a number key (not shown). A control signal (call command) designating the designated address is transmitted to all the dwelling units 2 through the control line Lc. Further, the control unit 50 controls the lobby call / dwelling unit call switching unit 57 to switch the call line La connected to the trunk line control device 3 to a state where it is connected to the two-wire / four-line conversion unit 54 and to switch the call / broadcasting. The unit 55 is controlled to switch the transmission path of the handset 52 to a state in which it is connected to the call line La via the two-wire four-wire conversion unit 54. On the other hand, if the address included in the control signal is its own address, the main control unit 10 of the dwelling unit 2 causes the notification sound (calling sound) generated by the notification sound generation unit 27 to be transmitted from the speaker 22. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the call / broadcast switching unit 15 and the communication path switching unit 16 to alarm. It is possible to establish a communication path with the monitoring panel 5 and to make a call only between the alarm monitoring panel 5 and the selected dwelling unit 2.

  Further, in the case where a broadcast is performed from the alarm monitoring panel 5 to a plurality (for example, all) of the dwelling units 2, when the administrator presses a broadcast start button (not shown) provided on the alarm monitoring panel 5, the control unit 50 transmits a broadcast start command from the control signal transmission / reception unit 51 to each dwelling unit 2 via the control line Lc, and then controls the lobby call / dwelling unit call switching unit 57 to be connected to the main line control device 3. The communication line La is switched to a state of being connected to the amplifier 56, and the call / broadcast switching unit 55 is controlled to switch the transmission path of the handset 52 to the state of being connected to the communication line La via the amplifier 56. On the other hand, the main control unit 10 of the dwelling unit 2 controls the call / broadcast switching unit 15 according to the broadcast start command to connect the call path connected to the main line interface unit 14 to the volume correction unit 30. At the same time, the volume correction unit 30 starts operating, and the switch SW2 is turned on to establish a communication path via the transmission line L5 with the additional speaker SP. However, the switch SW2, the transmission line L5, and the additional speaker SP are not shown. Then, when the administrator performs broadcast using the handset 52, the broadcast broadcast audio signal output from the handset 52 is transmitted to each dwelling unit 2 via the call line La. In the dwelling unit 2, the broadcast broadcasting audio signal transmitted to each dwelling unit 2 through the call line La is sent out from the speaker 22 after the volume is corrected by the volume correction unit 30, and added via the transmission line L5. It is also transmitted to the speaker SP and broadcast broadcast sound is transmitted from the additional speaker SP.

  Next, the operation at the time of simultaneous broadcasting from the lobby intercom 1 to the dwelling unit 2 as a feature of the present embodiment will be described.

  For example, when the administrator operates a number key of the operation unit 69 of the lobby intercom 1 to input a predetermined password, the control unit 60 that has received the password input from the operation unit 69 stores a memory (not shown). ), And if both match, a broadcast start command is transmitted from the control signal transmission / reception unit 51 to each dwelling unit 2 via the control line Lc, and then the lobby call / dwelling call The switching unit 57 is controlled to switch the communication line La connected to the trunk line control device 3 to a state where it is connected to the communication line La (lobby call / broadcast switching unit 58) connected to the lobby intercom 1, and the lobby call / The lobby intercom 1 is controlled by controlling the broadcast switching unit 58 to switch the communication line La connected to the lobby intercom 1 to the input end of the amplifier 56. The connected call line La connecting the call line La of the mains L1. On the other hand, the main control unit 10 of the dwelling unit 2 controls the call / broadcast switching unit 15 according to the broadcast start command to connect the call path connected to the main line interface unit 14 to the volume correction unit 30. At the same time, the volume correction unit 30 starts operating, and the switch SW2 is turned on to establish a communication path via the transmission line L5 with the additional speaker SP. Then, when the administrator performs a broadcast using the microphone 62 of the lobby intercom 1, a broadcast audio signal output from the lobby intercom 1 is transmitted to each dwelling unit 2 via the call line La. In the dwelling unit 2, the broadcast broadcasting audio signal transmitted to each dwelling unit 2 through the call line La is sent out from the speaker 22 after the volume is corrected by the volume correction unit 30, and added via the transmission line L5. It is also transmitted to the speaker SP and broadcast broadcast sound is transmitted from the additional speaker SP.

  As described above, according to the present embodiment, simultaneous broadcasting can be performed not only from the alarm monitoring panel 5 but also from the lobby intercom 1. For example, when a fire or a crime occurs, a fire department member or a police officer can connect the lobby intercom 1. It becomes possible to perform emergency broadcasting through.

1 is a system configuration diagram showing Embodiment 1 of the present invention. It is a block diagram of the sound volume correction | amendment part in the same as the above. (A)-(c) is operation | movement explanatory drawing of the sound volume correction | amendment part in the same as the above. It is a block diagram which shows the dwelling unit in Embodiment 2 of this invention. It is a block diagram which shows the dwelling unit in Embodiment 3 of this invention. It is a block diagram which shows the dwelling unit in Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lobby intercom 2 Unit 5 Alarm monitoring board 6 Door phone cord 30 Volume control part B Bypass route L1 Trunk line L2 Unit separate line L3 Child unit connection line La Call line

Claims (6)

The common unit device installed at the common entrance of the apartment house and capable of voice input / output, and the common unit device installed at each dwelling unit of the apartment house are connected to each other via a transmission line and the common unit apparatus has a selection means. Are selected by the visitor's operation, multiple dwelling units that establish a communication path with the common unit device, and each dwelling unit installed in the common unit or manager's room of the apartment house is a transmission line And a broadcast device that broadcasts audio to all or some of the dwelling units at the same time, and is installed in each dwelling unit and connected to the dwelling unit of the dwelling unit via a transmission line and all at once. And an audio device that transmits sound broadcast from the broadcasting device via a transmission line from the dwelling unit,
The transmission line comprises at least a control line that transmits a control signal that is generated in accordance with the operation of the selection means and instructs the start of an individual call, and a signal line that transmits an audio signal.
The dwelling unit has a calling means for making a call with the shared device via a signal line, a speaker that rings at least a broadcast sound, a state in which the signal line is connected to the calling means, and a state in which the speaker is connected to the speaker. An individual call / broadcast switching unit that selectively switches between, and a control unit that controls the individual call / broadcast switching unit based on a control signal transmitted via the control line,
In each dwelling unit, a control signal instructing the start of broadcast is transmitted via the control line, and when the control signal is received, the control means controls the individual call / broadcast switching means to connect the signal line and the transmission line. Switch to the state of connecting to the speaker,
An intercom system for collective housing, characterized in that, in the audio device, the sound of the broadcast broadcast transmitted through the transmission line is output in a loud sound.   2. The set according to claim 1, wherein the dwelling unit includes volume correction means provided between the individual call / broadcast switching means and the speaker for correcting the volume of the broadcast so that the volume of the broadcast is within a predetermined range. Residential intercom system.   The intercom system for an apartment house according to claim 1 or 2, wherein the acoustic device is a door phone slave unit installed in each dwelling unit and connected to the dwelling unit through a cordless handset connection line.   The intercom system for an apartment house according to any one of claims 1 to 3, wherein the acoustic device is a communication device that is installed in each dwelling unit and has a function of making a call with at least the common unit device via the dwelling unit. .   5. The intercom system for an apartment house according to claim 1, wherein the sound device includes a speaker that is installed in each dwelling unit and that plays a sound of a broadcast broadcast transmitted through a transmission line. .   The intercom system for collective housing according to any one of claims 1 to 5, wherein the shared device is a simultaneous broadcasting device.

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