JP6098014B2 - Intercom system for collective housing and power supply device thereof - Google Patents

Description

  The present invention relates to an apartment intercom system for an apartment house and a power supply apparatus thereof.

  As a conventional example, a collective housing door phone camera system described in Patent Document 1 is illustrated. This conventional example includes an outdoor unit installed at the entrance of an apartment house, a plurality of indoor units installed in each household of the apartment house, a communication line connecting the outdoor unit and each indoor unit, and a communication line. And a power supply device for supplying DC power to each indoor unit. In other words, since the indoor unit installed in each household (dwelling unit) is fed from the power supply via the communication line, the dedicated electrical wiring for feeding the indoor unit is not required in each dwelling unit. There is an advantage that it becomes easy.

  Here, in addition to the type in which power is supplied from a power supply unit (power supply device), there are types of indoor units (dwelling units) in which power is supplied from the power system through the housing panel of each unit. The former is referred to as a center power supply type, and the latter is referred to as a local power supply type. In other words, the power supply unit (power supply device) plays a role of supplying power to the center power supply type indoor unit (dwelling unit).

JP-A 63-67088

  By the way, there is a limit to the number of dwelling units (center feeding type dwelling units) that can be fed simultaneously by one power feeding device. Therefore, when a local power supply type dwelling unit is replaced with a center power supply type dwelling unit, or when a center power supply type dwelling unit is added, the center power supply type dwelling unit connected to the power supply device via the power supply line is used. The number of dwelling units must be within the allowable number. In particular, when a system is divided into floors or in an apartment having a plurality of buildings, a plurality of power supply lines are connected to the power supply device, and a plurality of dwelling units are connected to each system. The number of power supply type dwelling units must be within the allowable number.

  However, in order to know the number of center-feed type dwelling units connected to the feeding device, check the type of dwelling unit based on the design drawing and specifications of the housing complex, It was necessary to go to check the type of dwelling unit, which was very time consuming.

  The present invention has been made in view of the above problems, and an object of the present invention is to enable easy confirmation of the number of connected so-called center-fed dwelling units for each system.

  The intercom system for an apartment house of the present invention includes a common entrance machine installed at a common entrance of an apartment house, and a plurality of intercom systems installed in each dwelling unit of the apartment house and connected to the shared entrance machine via a plurality of lines. A dwell unit and a power feeding device that feeds power to one or more dwelling units via the line, the line having a communication path for communication and a feed path for feeding, the plurality of dwelling units The machine includes a center feeding type dwelling unit that operates with power fed through the feeding path, and a local feeding type dwelling unit that operates with power distributed to the dwelling unit. The number of connected center feeding type dwelling units connected to the line is connected to the plurality of lines to which one or more center feeding type dwelling units are connected to each line. To have discriminating means for discriminating And features.

  In this intercom system for collective housing, the determination means includes the number of the dwelling units that can communicate through the communication path during power feeding through the power feeding path, and non-power feeding that is not fed through the power feeding path. It is preferable that the number of connected center-feed type dwelling units is calculated from the difference from the number of dwelling units that can communicate via the communication path.

  In the intercom system for collective housing, the determination unit broadcasts a message for inquiring a type through the communication path during power supply through the power supply path, and the dwelling unit transmits the communication path through the communication path. When the message is received via the communication path, a response message indicating whether it is a local power supply type or a center power supply type is returned to the power supply apparatus via the communication path. It is preferable that the number of connected units of the center power supply type dwelling unit is determined based on the content of the response message received via the network.

  In this collective housing intercom system, it is preferable that the determination unit is configured to perform simultaneous broadcast of the message for inquiring a type in order for each system.

  In this collective housing intercom system, the power feeding device includes current measuring means for separately measuring a current flowing through the power feeding path of each system, and the determining means has a current value measured by the current measuring means as the power feeding. It is preferable that the number of connected units is calculated when it is below the upper limit value on the road, and the number of connected units is not calculated when the current value is equal to or higher than the upper limit value.

  In the intercom system for collective housing, the power feeding device notifies that the number of connections determined by the determination unit exceeds a predetermined number in the line of any one of the multiple lines. It is preferable to provide a notification means.

  In the intercom system for collective housing, the power feeding device is configured to connect the connection when the number of connections determined by the determination unit exceeds a predetermined number in the line of any one of the lines of the plurality of lines. It is preferable that the power supply to the power supply path of the line that exceeds the predetermined number is stopped.

  In this collective housing intercom system, it is preferable that the determining means is configured to determine the number of connected units when a predetermined condition is satisfied.

  In this collective housing intercom system, it is preferable that the discriminating means is configured to satisfy the condition that the power feeding device is turned on.

  In this collective housing intercom system, it is preferable that the determination means is configured to accept a predetermined operation input as the condition.

  In this collective housing intercom system, it is preferable that the power feeding device is configured integrally with the common entrance machine.

  A power supply device for an intercom system for an apartment house according to the present invention is a power supply device used for any one of the intercom systems for an apartment house, and includes a plurality of systems to which one to a plurality of center-feed type dwelling units are connected. It is provided with the said discrimination means to discriminate | determine the connection number of the said center electric power feeding type dwelling unit connected to the said track | line for every said track | line of multiple systems.

  Since the intercom system for multi-dwelling houses of the present invention and the power supply apparatus thereof include a determining unit that determines the number of connected center-feed type dwelling units connected to the line for each line of the plurality of systems, There is an effect that the number of connected so-called center-fed dwelling units can be easily confirmed for each system.

1 is a system configuration diagram showing an embodiment of an intercom system for an apartment house and a power feeding device according to the present invention. It is a sequence diagram for operation | movement description same as the above. It is a block diagram which shows another structure of the lobby intercom in the same as the above.

  Hereinafter, embodiments of an intercom system for an apartment house and a power feeding device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a system configuration diagram of an intercom system for a housing complex (housing information panel system) according to the present embodiment. This system is composed of a common entrance machine (lobby intercom 1) installed at a common entrance of an apartment house, and a plurality of units installed at each dwelling unit of the apartment house and connected to the lobby intercom 1 via a track (main cable 6). A dwelling unit (house information board) 2 is provided.

  The trunk cable 6 includes a control line (not shown) for transmitting control signals, a communication line (communication path) 61 for transmitting audio signals and video signals, and a power supply line (feeding path) 60 for power supply. And have.

  A branching device 4 is inserted in the trunk cable 6, and a line (a housing unit cable) branched by the branching device 4 is connected to the housing unit 2. The dwelling unit cable is branched from a control line (not shown) branched from the control line of the trunk cable 6, a communication line 63 branched from the communication line 61 of the trunk cable 6, and a power line 60 of the trunk cable 6. Power supply line 62.

  Here, the collective housing intercom system of the present embodiment has a plurality of (two in the illustrated example) trunk cables 6, and a plurality of branching devices 4 are inserted into each trunk cable 6. In the following description, “A” and “B” are added to distinguish the trunk cable 6 and the dwelling unit cable of each system.

  As shown in FIG. 1, the lobby intercom 1 includes a control unit 10, a power feeding unit 11, a communication unit 12, a voice input / output unit 13, an imaging unit 14, an input receiving unit 15, a power supply unit 16, switches 17A and 17B, and the like. .

  The voice input / output unit 13 converts an analog voice signal output from a microphone (not shown) into a digital voice signal (transmitted voice data) and passes it to the control unit 10. The voice input / output unit 13 converts a digital voice signal (received voice data) received from the control unit 10 into an analog voice signal and outputs the analog voice signal to a speaker (not shown). Ring the incoming voice.

  The imaging unit 14 is an imaging device such as a CMOS (Complementary Metal Oxide Semiconductor) image sensor, an optical system such as a lens that focuses light on the imaging device, and a video that converts a video signal output from the imaging device into digital video data. It consists of a processing circuit. Then, the video data is transferred from the imaging unit 14 to the control unit 10.

  The input receiving unit 15 has an input device such as a numeric keypad switch or a push button switch, and receives various operation inputs by operating the input device, and outputs an operation signal corresponding to each operation input to the control unit 10 To do. The control unit 10 includes hardware such as a CPU and a memory, and various programs (software) executed by the CPU. For example, when the dwell unit number of any dwelling unit is pressed by a numeric key switch, the input receiving unit 15 receives the operation input of the dwell unit number and outputs an operation signal for dwell unit number input. When the control unit 10 receives the operation signal for inputting the dwelling unit number from the input receiving unit 15, the control unit 10 generates control data for calling the dwelling unit 2 of the dwelling unit. A control signal including control data generated by the control unit 10 is transmitted from the communication unit 12 to the dwelling unit 2 via the communication lines 61A and 61B.

  The power supply unit 11 generates power (DC power) to be supplied to the center power supply type dwelling unit 2 (2A), and is supplied from, for example, an external power supply (commercial AC power supply 5). The AC / DC converter converts an AC voltage / current into a DC voltage / current. In other words, in the present embodiment, the power feeding device including the control unit 10 and the power feeding unit 11 is configured integrally with the lobby intercom 1 that is a common entrance machine. Here, the power supply unit 11 includes two AC / DC converters. The output end of one AC / DC converter is connected to the feeder 60A of one trunk cable 6A via the switch 17A, and the output end of the other AC / DC converter is connected to the other trunk line via the switch 17B. It is connected to the power supply line 60B of the cable 6B. The two switches 17A and 17B are both controlled by the control unit 10 to open and close.

  The communication unit 12 creates a packet (control packet) including control data generated by the control unit 10, and also includes a packet (video packet and video data and audio data (transmission audio data) passed from the control unit 10. Voice packet). Further, the communication unit 12 encodes the control packet, the video packet, and the audio packet and converts (modulates) the encoded bit string into an electric signal (control signal, video signal, and audio signal), and generates a control line and a communication line 61A. , 61B. The communication unit 12 sends a control signal to the control line, and sends a video signal and an audio signal to the communication lines 61A and 61B.

  Further, the communication unit 12 converts (demodulates) the electric signal flowing through the control line and the communication lines 61A and 61B into a bit string and decodes the packet (control packet and voice packet) from the demodulated bit string. However, the communication unit 12 discards the packet when the destination address of the decrypted packet does not match its own address, and if it matches, the data (control data and voice data) included in the data field of the packet is discarded. Decrypt and pass to control unit 10.

  The power source unit 16 converts the AC voltage / current supplied from the AC power source 5 into a DC voltage / current and supplies the DC voltage / current to the units 10, 12 to 15.

  In the intercom system for apartment houses of this embodiment, two types of power feeding methods (center power feeding type and local power feeding type) dwelling unit 2 are mixed. The center power supply type dwelling unit 2A operates with electric power (DC power) supplied from the power supply unit 11 of the lobby intercom 1 through the power supply path (power supply lines 60 and 62). The local power supply type dwelling unit 2B operates by generating a DC power source from a commercial AC power source 5 distributed to each dwelling unit.

  As shown in FIG. 1, the center-fed dwelling unit 2A includes a dwelling unit control unit 20, a power receiving unit 21, a communication unit 22, a voice input / output unit 23, a video display unit 24, an input receiving unit 25, a door phone communication unit 26, etc. Is provided. The local power supply type dwelling machine 2B is a center power supply type dwelling machine, except that it has a power supply circuit that converts AC power supplied from the AC power supply 5 into DC power instead of the power receiving unit 21. It has the same configuration as 2A. Therefore, illustration and description of the configuration of the local power supply type dwelling unit 2B are omitted.

  The voice input / output unit 23 converts an analog voice signal output from a microphone (not shown) into a digital voice signal (transmitted voice data) and passes it to the dwelling unit control unit 20. The voice input / output unit 23 converts a digital voice signal (received voice data) received from the dwelling unit control unit 20 into an analog voice signal and outputs the analog voice signal to a speaker (not shown). Use the speaker to ring the incoming voice.

  The video display unit 24 includes a display device such as a liquid crystal display or an organic EL display, and a drive circuit that drives the display device to display a video (none is shown).

  The dwelling unit control unit 20 includes hardware such as a CPU and a memory, and various programs (software) executed by the CPU. The input receiving unit 25 has an input device such as a touch panel and a push button switch, receives various operation inputs by operating the input device, and sends operation signals corresponding to each operation input to the dwelling unit control unit 20. Output. For example, when a response button including a push button switch is pressed, an operation input is received by the input receiving unit 25 and a response operation signal is output. When a response operation signal is input from the input receiving unit 25, the dwell unit control unit 20 generates control data for responding to a call from the lobby intercom 1. Then, a control signal including control data generated by the dwelling unit control unit 20 is transmitted from the communication unit 22 to the lobby intercom 1 via the communication lines 63A (or 63B) and 61A (or 61B).

  The communication unit 22 creates a packet (control packet) including control data created by the dwell unit control unit 20, and also includes a packet (voice packet) including voice data (transmitted voice data) passed from the dwell unit control unit 20. ). Further, the communication unit 22 encodes the control packet and the voice packet, converts (modulates) the encoded bit string into an electric signal (control signal, voice signal), and flows the control signal and the communication line 63A (or 63B). . The communication unit 22 sends a control signal to the control line, and sends an audio signal to the communication line 63A (or 63B).

  The communication unit 22 converts (demodulates) an electric signal flowing through the control line and the communication line 63A (or 63B) into a bit string, and decodes a packet (control packet, video packet, and audio packet) from the demodulated bit string. However, the communication unit 22 discards the packet if the destination address of the decrypted packet does not match the address of the packet, and if the destination address matches, the communication unit 22 discards the data (control data and video data, audio data included in the data field of the packet). Data) is decrypted and passed to the dwelling unit control unit 20.

  The power receiving unit 21 converts power (DC power) supplied via the power supply lines 60A (or 60B) and 62A (or 62B) into power (DC-DC conversion) and operates the units 20, 22 to 26. Supply power.

  The door phone communication unit 26 is connected to the door phone slave unit 3 installed at the exterior entrance of each dwelling unit via a communication cable. The doorphone slave unit 3 is conventionally known and includes a call button operated by a visitor, an image sensor for photographing the visitor, a microphone and a speaker for talking with the visitor, and the like. That is, when a visitor operates the call button, a call signal is transmitted via the communication cable, and the call signal is received by the door phone communication unit 26. In addition, the voice of the visitor collected by the microphone of the doorphone slave unit 3 and the video imaged by the imaging device are received by the doorphone communication unit 26 via the communication cable. Furthermore, the audio data output from the dwelling unit control unit 20 is converted into an analog audio signal and transmitted from the door phone communication unit 26 to the door phone slave unit 3 via the communication cable. As a result, a call (door phone call) can be performed between the dwelling unit 2A and the door phone slave unit 3. However, since the door phone call between the dwelling unit 2A and the door phone slave unit 3 is well known in the art, a detailed description thereof will be omitted. Note that power is supplied to the doorphone slave unit 3 from the dwelling unit 2A via a communication cable.

  By the way, the dwelling unit 2 (2A, 2B) in the present embodiment records (records and records) video and audio in a call (interphone call) and a doorphone call with the lobby interphone 1 and reproduces the stored video and audio. It has a function to do. That is, the dwell unit control unit 20 stores the data file created by compressing the audio data and the video data received from the communication unit 22, the audio acquisition unit 23, and the intercom communication unit 26 when the recording / recording mode is set. Store in (nonvolatile semiconductor memory). Further, when the reproduction mode is set, the dwelling unit control unit 20 reads the data file stored in the memory and expands the data of the data file to acquire the original audio data and video data. Then, the dwell unit control unit 20 outputs the acquired audio data to the audio input / output unit 23 to sound the audio (recorded audio) from the speaker, and outputs the acquired video data to the video display unit 24. Display video (recorded video) on the display device. However, the recording / recording mode and the playback mode are set and released by the dwelling unit control unit 20 in accordance with an operation signal received by the input receiving unit 25.

  Here, the number of the dwelling units 2 (2A, 2B) that can make an interphone call at the same time as the lobby intercom 1 is only one, but one or more dwelling units 2 (2A, 2B) that do not have an interphone call can call the intercom. Or recording / recording or playing back a recorded / recorded data file at the same time. If multiple center-fed units 2A perform processing such as intercom calls, doorphone calls, and data file playback at the same time, the entire system will stop if the power supply of the power supply unit (power supply unit 11) is insufficient. There is a risk that. For this reason, an upper limit is set for the number of connected center-feed type dwelling units 2A so that the number of center-fed type dwelling units 2A connected to one power feeding device (lobby intercom 1) does not exceed the upper limit. The system must be operated. For this reason, the power supply apparatus according to the present embodiment is equipped with a function for determining the number of connected center power supply type dwelling units 2A.

  Next, with reference to the sequence chart of FIG. 2, a procedure in which the power supply apparatus according to the present embodiment determines the number of connected center power supply type dwelling units 2A will be described.

  When the input receiving unit 15 receives an operation input for determining the number of connected units, the control unit 10 of the lobby intercom 1 shifts from the normal operation mode to the connected number determining mode. However, the condition for shifting to the connected number determination mode is not limited to the input receiving unit 15 receiving an operation input. For example, the power supply device (lobby intercom 1) may be conditional on being powered on. Alternatively, the communication may be performed on the lobby intercom 1 from the newly constructed or replaced new dwelling unit 2A or 2B.

  When the control unit 10 shifts to the connected number determination mode, it turns on (closes) one switch 17A and turns off (opens) the other switch 17B, and then sends a control signal including a response request message to the communication unit 12. Broadcasts to all the dwelling units 2A and 2B.

  The control signal transmitted from the communication unit 12 reaches the dwelling units 2A and 2B via the communication lines 61A and 61B of the trunk cables 6A and 6B and the communication lines 63A and 63B of the dwelling cables. However, since the power supply via the power line 60B of the trunk cable 6B is stopped because the switch 17B is turned off, the center feeding type dwelling unit 2A connected to the trunk cable 6B is not operating. . Therefore, the control signal transmitted from the communication unit 12 is received only by the dwelling units 2A and 2B connected to the main line cable 6A and the local power supply type dwelling unit 2B connected to the main line cable 6B. It is not received by the center feeding type dwelling unit 2A connected to 6B.

  Then, the dwell unit control unit 20 of the dwell unit 2A or 2B that receives the control signal and receives the response request message generates a control signal including the response message and sends it back to the lobby interphone 1 from the communication unit 22.

  The control unit 10 records the number X of the dwelling units 2A and 2B that have received the response message in the memory. Then, after both of the two switches 17A and 17B are turned off, a control signal including a response request message is broadcast from the communication unit 12 to all the dwelling units 2A and 2B.

  The control signal transmitted from the communication unit 12 reaches the dwelling units 2A and 2B via the communication lines 61A and 61B of the trunk cables 6A and 6B and the communication lines 63A and 63B of the dwelling cables. However, since the two switches 17A and 17B are both off, all the center-fed dwelling units 2A are not operating. Therefore, the control signal transmitted from the communication unit 12 is received only by the local power supply type dwelling unit 2B and is not received by the center power supply type dwelling unit 2A.

  The dwell unit control unit 20 of the local power supply type dwelling unit 2B that receives the control signal and receives the response request message generates a control signal including the response message, and causes the communication unit 22 to return the response signal to the lobby intercom 1.

  The control unit 10 records the number Y of the dwelling units 2B that have received the response message in the memory, and subtracts the number Y from the number X recorded in the memory. Here, the number X is the sum of the number of center-fed dwelling units 2A connected to one trunk cable 6A and the number of all locally-fed dwelling units 2B, and the number Y is all local This is the number of power supply type dwelling units 2B. Therefore, by subtracting the number Y from the number X, the number (= X−Y) of the center-fed dwelling units 2A connected to one trunk cable 6A can be calculated. Note that the control unit 10 preferably stores the calculated number of connections in a memory.

  Subsequently, after turning off one switch 17A and turning on the other switch 17B, the control unit 10 sends a control signal including a response request message from the communication unit 12 to all the dwelling units 2A and 2B simultaneously. Broadcast (broadcast). Hereinafter, the control unit 10 can calculate the number of center-feed type dwelling units 2A connected to the other trunk cable 6B by the same procedure.

  As described above, in the present embodiment, the common entrance machine (lobby intercom) 1 installed at the common entrance of the apartment house, and the common entrance machine 1 and the multiple lines 6A and 6B installed at each dwelling unit of the apartment house are provided. A plurality of dwelling units 2A and 2B connected to each other. In addition, the present embodiment includes a power feeding device that feeds power to one to a plurality of dwelling units 2A via lines 6A and 6B. The lines 6A and 6B have communication paths 61A and 61B for communication and power supply paths 60A and 60B for power feeding. The plurality of dwelling units 2A and 2B are a center-fed type dwelling unit 2A that operates with power fed through the feeding paths 60A and 60B, and a local feeding type dwelling unit 2B that operates with power distributed to the dwelling units. including. The power feeding device is connected to a plurality of lines 6A and 6B to which one to a plurality of center feeding type dwelling units 2A are connected, respectively, and is connected to the center feeding type dwelling unit 2A connected to the lines 6A and 6B. A discriminating means (control unit 10) for discriminating the number of units for each of the plurality of lines 6A and 6B is provided.

  Therefore, the present embodiment is a discriminating means (control unit 10) that discriminates the number of connected center-feed type dwelling units 2A connected to the lines 6A and 6B for each of the multiple lines 6A and 6B. Therefore, the number of connected center-feed type dwelling units can be easily confirmed for each system.

  Further, the discriminating means (control unit 10) determines the number X of the dwelling units 2A and 2B that can communicate via the communication paths 61A and 61B and the power supply paths 60A and 60B during power feeding via the power feeding paths 60A and 60B. The number of units connected to the center-fed type dwelling unit 2A is calculated from the difference from the number Y of the dwelling units 2B that can communicate via the communication paths 61A and 61B while the power is not being supplied. For this reason, the number of connected devices can be confirmed without changing the frame format of the control signal.

  The discriminating means (control unit 10) is preferably configured to discriminate the number of connected devices when a predetermined condition is satisfied. For example, the discriminating means (control unit 10) is preferably configured so that the condition is that the power supply apparatus is turned on. Thereby, since the determination of the number of connected devices is automatically performed, forgetting to confirm the number of connected devices can be prevented.

  Furthermore, it is preferable that the determination means (control unit 10) is configured to accept the predetermined operation input as the condition. Thereby, an unnecessary operation associated with the determination of the number of connected devices can be prevented.

  In addition, since the power supply device is configured integrally with the common entrance machine (lobby intercom 1), the present embodiment eliminates the need for an installation space for the power supply device and improves the workability of maintenance work. There is.

  By the way, the power feeding device notifies that the number of connections determined by the determining means (control unit 10) exceeds a predetermined number in any of the lines 6A, 6B of the plurality of lines 6A, 6B. It is preferable to provide a notification means. For example, when the number of connected one line 6A exceeds a predetermined number, the control unit 10 may sound a notification sound on the speaker of the voice input / output unit 13 of the lobby intercom 1.

  Alternatively, when the number of connections determined by the determining means (control unit 10) exceeds a predetermined number in the lines 6A and 6B of any of the multiple lines 6A and 6B, However, the power supply to the power supply path 60A or 60B of the line 6A or 6B exceeding the predetermined number may be stopped.

  Here, the discriminating means (control unit 10) simultaneously sends a message for inquiring the type (center feeding type and local feeding type) via the communication paths 61A and 61B during feeding via the feeding paths 60A and 60B. You do n’t mind reporting. When the dwelling units 2A and 2B receive the message via the communication paths 61A and 61B, they supply a response message indicating whether they are the local power supply type or the center power supply type via the communication paths 61A and 61B. Reply to the device. The discriminating means (the control unit 10) is preferably configured to discriminate the number of connected center-feed type dwelling units 2A based on the content (type) of a response message received via the communication paths 61A and 61B.

  Furthermore, the discriminating means (control unit 10) is preferably configured to perform simultaneous broadcast of the message for inquiring the type for each system in order.

  With the configuration as described above, not only the number of connected center-feed type dwelling units 2A can be determined, but also the type of dwelling unit 2 installed in each dwelling unit can be directly determined.

  Incidentally, the power feeding device (lobby intercom 1) preferably includes current measuring means (current measuring unit 18) for separately measuring the current flowing through the power feeding paths 60A and 60B of each system as shown in FIG. The discriminating means (control unit 10) calculates the number of connected devices when the current value measured by the current measuring means (current measuring unit 18) is below the upper limit value in the power supply paths 60A and 60B, and the current value is the upper limit value. In the above case, it is preferable that the number of connected units is not calculated.

  That is, if the number of center-fed dwelling units 2A connected to the power supply lines 60A and 60B has already reached the upper limit, the center-fed dwelling unit 2A is no longer connected to the power supply lines 60A and 60B. I can't do it. Therefore, before the control unit 10 determines the number of connected units as described above, if the number of connected units has already reached the upper limit value based on the current value measured by the current measuring unit 18, the number of connected units Useless execution of the discrimination mode can be avoided.

  In the present embodiment, the number of lines 6 is two, but three or more lines 6 may be provided.

1 Lobby intercom (common entrance machine, power supply device)
2A Center-fed dwelling unit
2B Locally powered dwelling unit
6A, 6B track
10 Control unit (discriminating means)
11 Feeder
60A, 60B power line (feeding line)

Claims (12)

A common entrance machine installed in a common entrance of an apartment house, a plurality of residence units installed in each residence unit of the apartment house and connected to the shared entrance machine via a plurality of lines, and the line A power supply device that supplies power to one or more of the dwelling units, the line includes a communication path for communication and a power supply path for power supply,
The plurality of dwelling units include a center feeding type dwelling unit that operates with power fed through the feeding path, and a local feeding type dwelling unit that operates with power distributed to the dwelling unit,
The power supply device is connected to a plurality of lines connected to one or more center power supply type dwelling units, and the number of connected center power supply type dwelling units connected to the line is An intercom system for collective housing, comprising a discriminating means for discriminating each of the plurality of lines.   The determination means includes the number of the dwelling units that can communicate via the communication path during power feeding via the power feeding path, and the communication path during non-power feeding that is not fed via the power feeding path. 2. The collective housing intercom system according to claim 1, wherein the intercom system is configured to calculate the number of connected center-feed type dwelling units from a difference with the number of communicable dwelling units. The determination means broadcasts a message for inquiring the type through the communication path during power supply through the power supply path,
When the unit receives the message via the communication path, it returns a response message indicating whether it is a local power supply type or a center power supply type to the power supply apparatus via the communication path,
The apartment house according to claim 1, wherein the determination unit is configured to determine the number of connected center-fed units based on the content of the response message received via the communication path. Intercom system for.   4. The collective housing intercom system according to claim 3, wherein the discriminating means is configured to perform simultaneous broadcasting of the message for inquiring a type for each system in order.   The power supply apparatus includes a current measurement unit that measures the current flowing through the power supply path of each system separately, and the determination unit has a current value measured by the current measurement unit that is lower than an upper limit value in the power supply path. The calculation of the number of connected units is performed in the case, and the calculation of the number of connected units is not performed when the current value is greater than or equal to the upper limit value. The intercom system for apartment houses described in 1.   The power supply apparatus includes a notification unit that notifies that the number of connected units determined by the determination unit exceeds a predetermined number in the line of any one of the lines of a plurality of systems. The intercom system for apartment houses according to any one of claims 1 to 5.   When the number of connections determined by the determination unit exceeds a predetermined number in the line of any one of the lines of the plurality of lines, the power supply device exceeds the predetermined number. The intercom system for an apartment house according to any one of claims 1 to 6, wherein the intercom system is configured to stop power supply to the power supply path of the line.   The intercom system for an apartment house according to any one of claims 1 to 7, wherein the determination unit is configured to determine the number of connected units when a predetermined condition is satisfied.   9. The collective housing intercom system according to claim 8, wherein the determination unit is configured to make the condition that the power supply device is powered on.   9. The collective housing intercom system according to claim 8, wherein the determination means is configured to accept a predetermined operation input as the condition.   The intercom system for collective housing according to any one of claims 1 to 10, wherein the power feeding device is configured integrally with the common entrance machine.   It is the electric power feeder used for the intercom system for collective housing in any one of Claims 1-11, Comprising: It connects with the above-mentioned line of a plurality of systems to which one to a plurality of the above-mentioned center feeding type dwelling units are connected, and A power supply apparatus for an intercom system for an apartment house, comprising: the determining means for determining the number of connected center-feed type dwelling units connected to a track for each of a plurality of lines.

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