JP2001245058A - Interphone system for multiple dwelling house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interphone system for a multiple dwelling house which can control component devices of different communication systems in the same system. SOLUTION: A signal conversion device 1 which has a function to convert two different communication systems to each other is connected between a central controller 3 and an intra-room master machine 2 and converts a digital signal from the central controller 3 to an analog signal, which the intra-room master machine 2 can receive, and converts an analog signal from the intra- room master machine 2 to a digital signal which the central controller 3 can receive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom system for a dwelling house comprising a base unit installed in each dwelling unit such as an apartment and a control unit installed in a control room or the like.

[0002]

2. Description of the Related Art Conventionally, an intercom system for a multi-family house is composed of a sub-unit and a main unit installed at each dwelling unit, a co-entrance sub-unit installed at a common entrance, a central control device for controlling each device, and the like. In this communication method, control signals were transmitted and received to realize device control and security monitoring. Therefore, as a matter of course, devices using different communication systems cannot exist in the same system. Therefore, when a new control signal (command) is added or the new communication system is adopted, the entire intercom system must be replaced. I was going.

[0003]

However, in the conventional intercom system, since the entire interphone system must be replaced, for example, when a new communication system is adopted in the central control unit, the child intercom system cannot be used. There is a problem that all the components such as the main unit, the main unit, and the common entrance child unit must be newly developed.

[0004] In order to solve such problems, the present invention provides an intercom system for a condominium, which enables devices using different communication systems to exist in the same system.

[0005]

According to the present invention, there is provided an intercom system for an apartment complex, comprising: a component device installed in a dwelling unit of the apartment complex; a control device for transmitting / receiving a signal having a different communication system from the component device; A device which is connected between a control device and a control device, and which receives a signal from the control device and a signal from the control device, and converts the signal into a signal that can be received by the control device. It is. With this configuration, components and control devices of different communication systems exist in the same system and have an effect of being able to communicate.

In the intercom system for a multi-family housing according to the present invention, the constituent equipment includes a transmitting means for transmitting an initialization request signal for requesting initialization information to the control device at the time of startup, and the signaling device is included in the initialization request signal. This automatically acquires the information of the constituent devices that have been set from the initialization request signal.
With this configuration, it is not necessary to assign an individual address, which is individually assigned to each component device, for the control device or the like to transmit a control signal or an audio signal to the signal conversion device. It has the effect of being able to.

The intercom system for a condominium according to the present invention is provided with a judging means for judging whether the signal conversion device is a control signal to a component device from information contained in a control signal transmitted from the control device, If the determining means determines that the signal is not a control signal to the component device, the transmission to the component device is stopped. With this configuration, an operation can be prevented in which a malfunction caused by receiving a newly added control signal can be prevented.

The intercom system for a multi-family housing according to the present invention is characterized in that the signal conversion device transmits a first confirmation signal for confirming the operation state of the component equipment at a predetermined interval and confirms the signal;
Storage means for receiving a response signal to the first confirmation signal from the component device and storing an operation state of the component device;
When receiving a second confirmation signal for confirming the operation state of the component device at a predetermined interval different from the first confirmation signal from the control device,
The second response signal is transmitted to the control device based on the operation state of the component device stored in the storage means. With this configuration, there is an effect that constituent devices of communication systems having different transmission speeds can exist in the same system.

[0009] In the intercom system for a condominium according to the present invention, the signal converter includes a modulating / demodulating means for modulating / demodulating a digital audio signal which is time-divided into a plurality of channels, and a supplementing means for supplementing a communication path with constituent devices. If the component device can only make one call at a time, the first channel of the component device is captured. This configuration has an effect that the number of wirings between the signal conversion device and the component devices can be minimized.

In the intercom system for a multi-family housing according to the present invention, the modulating / demodulating means includes an echo canceling means for canceling an echo generated when demodulating a coded digital audio signal into an analog signal. Due to the delay characteristics of the digital transmission, an effect is provided in which good echo can be realized by canceling the generated echo.

[0011] In the intercom system for a multi-family housing of the present invention, the signal conversion device is provided with acquisition storage means for acquiring and storing information on a plurality of components, and the plurality of components can be connected. With this configuration, one signal converter can be connected to a plurality of constituent devices, and has the effect of reducing the price of the system.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an intercom system for an apartment house according to the present invention. The signal conversion device 1 converts a response signal or an analog signal to a control signal from the component device (indoor master unit) 2 into another communication method, for example, a digital signal and transmits the digital signal to the central control device 3. Also, an analog control signal that can be received by the component (indoor master unit) 2 from the central control unit 3 that cannot be received by the component (indoor master unit) 2 because the communication system is different. Or analog audio signals.
The component equipment (indoor main unit) 2 is installed in each dwelling unit, and talks with a visitor who has come to the common entrance child device 5 or the entrance child device 6 with an outdoor display or unlocks the common entrance. This is a device that supports only analog signals. The central control device 3
It controls each device, and is a component device (indoor master unit) 2
It has a communication system of a digital signal different from that of, for example, and includes a modem, a protocol controller, an echo canceller, a microcontroller for controlling them, a power supply circuit, and the like.

First, the signal conversion device 1 will be described with reference to the drawings. FIG. 2 is a block diagram of the signal conversion device 1. The signal conversion device 1 includes an analog communication terminal 11 connected to a component device (indoor master unit) 2, and an analog communication terminal 1.
4, an analog communication unit 12 for transmitting and receiving an analog control signal from the analog communication terminal 11, and an analog communication circuit 1 for transmitting and receiving an analog voice signal from the analog communication terminal 14.
9. Echo canceller 15 that converts digital audio signals into analog audio and cancels digital echoes generated when analog audio is transmitted and received from analog communication unit 19, and microcontroller 1 that controls each unit described above.
3. A protocol controller 16 that converts or reverse-converts a control signal or an analog audio signal into a digital signal, a modem 17 that modulates a digital signal converted by the protocol controller 16 or demodulates a digital signal from a digital communication terminal 18. It is constituted by a digital communication terminal 18 connected to the control device 3.

Next, regarding the component equipment (indoor master unit) 2,
This will be described with reference to FIG. Fig. 3 shows components (indoor master unit)
2 is a block diagram of FIG. The constituent device (indoor master unit) 2 includes a first analog communication terminal 22 connected to the signal conversion device,
A second analog terminal 23, an analog communication terminal 21, and an analog communication unit 30 for receiving an analog control signal from the analog communication terminal 21; a handset communication unit for receiving an analog voice signal from the first or second analog communication path 26, an analog communication unit 24 for transmitting and receiving analog voice,
A microcontroller 25 for controlling the above-described units, a security sensor for fire, gas, and the like are connected, and a security sensor I / F 28 for inputting the state of those sensors to the microcontroller 25, and an alarm circuit for generating an alarm when a sensor is issued. 20, display circuit 2 for displaying alerts
9.

Next, the operation of the intercom system for an apartment house according to the embodiment of the present invention will be described.
When trying to communicate requirements by calling a certain dwelling unit from the manager's office of an apartment house, first, the manager's office master unit 4
Dials the room number of the relevant dwelling unit. In this case, the dial signal is converted into a digital signal and transmitted from the management office master unit 4 to the central control unit 3. The central control unit 3 extracts the room number of the indoor master unit 2 with which communication is desired from the received digital signal, and sends a call signal from the management office master unit 4 to the corresponding indoor master unit 2. Since the call signal of the central controller 3 is a digital modulation signal, the indoor master unit 2 that can only receive an analog signal cannot respond as it is. Here, the indoor master unit 2 and the central controller 3
The signal conversion device 1 that can convert the digital modulation signal of the central control device 3 into an analog signal that can be received by the indoor master device 2 is arranged between the central control device 3 and the indoor control device 3.

However, since the central control unit 3 sends out a calling signal addressed to the indoor master unit 2, the signal converter 1 must know which indoor master unit 2 is connected.
Therefore, the signal conversion device 1 operates as shown in FIG.
By transmitting an initialization request command as shown in (1) to the central controller 3, address information and the like of the connected indoor master unit 2 are acquired. Further, other information of the indoor parent device 2 can also be obtained from the central control device 3 by the initialization information command (FIG. 4). That is, the address setting is not required for the signal conversion device 1, the information of the indoor master unit 2 can be automatically obtained, and the central control device 3 does not need to change anything, and is troublesome when added. Has been eliminated.

The signal converter 1 connected to the central controller 3 receives the digitally modulated signal from the central controller 3 through the digital communication 18. The received digital modulation signal is input to the modem 17. In the modem 17,
The input digital modulation signal is demodulated into a digital signal. The digital signal demodulated by the modem 17 is input to the protocol controller 16 to separate a control signal and an audio signal according to a predetermined protocol, input the control signal to the microcontroller 13, and demodulate the audio signal to an analog signal. . The echo canceller 15 outputs the audio signal to the analog communication unit 19 after erasing the echo generated from the audio signal by demodulating the analog signal. The analog communication unit 19 outputs the received analog voice signal to the indoor master device 2 and the like via the analog communication terminal 14.
The microcontroller 13 controls these series of operations, and at the same time, controls the analog
And the like, and transmits a call request signal via the analog communication terminal 11. The indoor master device 2 or the like that has received the request signal can start the operation of connecting the communication path. By such an operation, a call can be made between the management office master unit 4 and the indoor master unit 2. The call request from the indoor master unit 2 to the management office master unit 4 is established by the reverse procedure of the above description.

As described above, the central control unit 3 and the indoor master unit 2
By providing the signal conversion device 1 between the two, component devices having different communication schemes can be configured in one system, and an intercom system for a housing complex with high development efficiency and cost efficiency can be provided. it can.

Since the signal conversion device 1 has acquired the information of the connected indoor master unit 2 as described above, the control signal from the central control device 3 to the unconnected components is Is not transmitted to the indoor master unit 2. This will be described with reference to FIG. FIG. 6 is a sequence diagram of the intercom system for an apartment house in the embodiment of the present invention. The signal conversion device A is connected to the component device A, and the signal conversion device B is connected to the component device B, and transmits and receives signals to and from the central control device. For example, when a call request command is transmitted from the parent device of the monitoring office to the component device A via the central control device, the command is input to the signal conversion devices A and B. The signal converters A and B extract the destination from the destination information included in the call request command, and determine whether the destination is for the connected component device. Since the signal conversion device A is a command addressed to the connected component device A, the signal conversion device A converts the command to the component device A and transmits it. On the other hand, the signal conversion device B does not transmit the command to the component device B because the command is not directed to the component device B connected thereto. Also, not only the destination, but also the command,
If the connected device determines whether or not the command is operable and transmits the command, even if a new control signal is added, the component device can eliminate the possibility of malfunction due to the new control signal.

Further, in a normal intercom system for a condominium, the operation / non-operation state of the indoor master unit 2 and the like is monitored.
This is performed by transmitting a state confirmation signal (polling signal) at predetermined intervals. FIG. 7 is a sequence diagram of the state monitoring of the intercom system for an apartment house in the embodiment of the present invention. For example, the polling B signal is transmitted from the central control unit 3 to the indoor master unit 2 at intervals of 4 ms. Here, the signal conversion device 1 that has received the polling signal B does not transmit the polling signal B to the indoor master device 2 because the transmission speed with the indoor master device 2 is low. The signal conversion device 1 transmits the polling signal A to the indoor master unit 2 at intervals of 10 ms, and receives and stores the polling A response signal. Therefore, when the polling signal B is received, the stored state of the indoor master unit 2 is sent to the central controller 3 by the polling B.
Send a response signal. Thereby, the signal conversion device 1
The result of the previous polling with the indoor master unit 2 is sent to the central control unit 3
Central control device 3 transmits a polling signal to indoor master unit 2 at intervals of 4 ms, and operates as if a polling response signal has been received. ing. As shown in FIG.
If the polling cycle between the indoor master unit 2 and the signal converter 1 is slower than the polling cycle between the signal converter 1 and the central controller 3, the latest information may not be transmitted to the central controller 3 depending on the timing. Although there is
This is not a problem because the time is ms.

As described above, it is possible to prevent the possibility of occurrence of an abnormality due to a shift of a polling signal due to connection of components having different transmission speeds and polling intervals.

In the case where the audio digital signal from the main unit 4 of the management office is coded in the third channel which is time-divided, the signal conversion device 1 Instead of capturing the first communication path, a control signal is transmitted to capture the first communication path. In this case, a control signal may be transmitted so as to capture the third communication path, and an audio signal may be transmitted to the third analog communication path. There are restrictions.

As described above, it is possible to realize a larger number of communication paths in the new system without any problem even if the number of communication paths is larger than the number of communication paths permitted by the conventional constituent devices. Regardless of the number of communication paths in the system, only one pair is sufficient for a large number of wirings.

Further, since the signal converter 1 is provided with the echo canceller 15, it is undeniable that an echo is generated when the audio signal is converted from an analog signal to a digital signal and from a digital signal to an analog signal. 2, the voice quality can be improved without an echo canceller.

As shown in FIG. 8, the signal converter 1
By storing the address information and the like of the plurality of indoor master units 82, 83, and 84, a plurality of constituent devices can be connected to one signal conversion device. For example, it is possible to configure a system by connecting one signal conversion device to one floor, and to reduce the system price.

[0027]

As described above, according to the present invention,
Components that could not be connected and operated in one system
Connection and operation are possible within one system. Even if the communication system is different due to system upgrade or control signal addition, it is not necessary to newly develop all the components, and existing devices can be used effectively. In addition, it is possible to provide an intercom system for a housing complex with high development efficiency and investment efficiency.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of an intercom system for an apartment house in an embodiment of the present invention.

FIG. 2 is a block diagram of a signal conversion device of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 3 is a block diagram of components (interior master unit) of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 4 is a sequence diagram of an initialization request of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 5 is a diagram for explaining an initialization request command of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 6 is a sequence diagram of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 7 is a sequence diagram of a state monitoring of the intercom system for an apartment house in the embodiment of the present invention.

FIG. 8 is a configuration diagram showing a connection with a plurality of base units of the intercom system for an apartment house in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Signal conversion apparatus 2 Constitution equipment (indoor master unit) 3 Central control unit 12, 30 Analog communication unit 13, 25 Microcontroller 14, 24 Analog communication unit 15 Echo canceller 16 Protocol controller 17 Modem

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinji Nakamura 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Kentaro Okawa Tsunashima-Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture 4-3-1, Matsushita Communication Industrial Co., Ltd. (72) Inventor Yasuo Fujimura 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture Matsushita Communication Industrial Co., Ltd. (72) Inventor Tadao Ichinose Yokohama, Kanagawa Prefecture Matsushita Communication Industrial Co., Ltd. F-term (reference) 5K038 AA01 CC12 DD10 EE12 EE13 FF07

Claims (7)

[Claims] 1. A component device installed in a dwelling unit of a condominium or a shared entrance terminal, a control device for transmitting / receiving a signal having a communication method different from that of the component device, and a communication device between the component device and the control device. Is connected to, receives a signal from the component device, and a signal from the control device, respectively,
An intercom system for a condominium, comprising: the control device; and a signal conversion device that converts the component device into a receivable signal. 2. The apparatus according to claim 1, wherein the component device includes a transmission unit configured to transmit an initialization request signal for requesting initialization information to the control device at the time of activation, wherein the signal device is included in the initialization request signal. 2. The intercom system for a multi-family house according to claim 1, wherein information on constituent devices is automatically acquired from the initialization request signal. 3. The signal conversion device further includes a determination unit configured to determine whether or not the control signal is a control signal to the component device based on information included in a control signal transmitted from the control device, wherein the determination unit includes The intercom system for a multi-family housing according to claim 1 or 2, wherein when it is determined that the control signal is not a control signal to the component device, transmission to the component device is stopped. 4. A confirmation means for transmitting and confirming a first confirmation signal for confirming an operation state of the component device at a predetermined interval, and a response signal to the first confirmation signal from the component device. Receiving a second confirmation signal for confirming the operation state of the component device at a predetermined interval different from the first confirmation signal from the control device. The intercom for a multi-family housing according to any one of claims 1 to 3, wherein a second response signal is transmitted to the control device from the operation state of the component device stored in the storage unit when the operation is performed. system. 5. The signal conversion device according to claim 1, further comprising: a modulation / demodulation unit for modulating / demodulating a digital audio signal time-divided into a plurality of channels; and a supplementary unit for supplementing a communication path with the component device. If you can only make one call at a time,
The intercom system for a multi-family residence according to any one of claims 1 to 4, wherein a first communication path of the component device is captured. 6. The apparatus according to claim 1, wherein said modulation / demodulation means includes echo cancellation means for canceling an echo generated when demodulating a coded digital audio signal into an analog signal. The intercom system for apartment houses described in Crab. 7. The signal conversion device according to claim 1, wherein the signal conversion device includes an acquisition storage unit that acquires and stores information on a plurality of component devices, and is capable of connecting a plurality of component devices. Intercom system for apartment houses.