JP2650766B2 - Intercom equipment for apartment houses - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom unit for an apartment house, and more particularly to an intercom apparatus for an apartment house using a two-wire transmission line.

[Prior art] As shown in FIG. 3, a conventional intercom unit for a multi-family house is composed of a control device 31, a multi-entry unit 32, an administrator room unit 33, an adapter ADn having the functions of a single-door unit, and a living room unit TEn (n). Is 11 ~
16). The control device 31 and the adapter ADn and the adapter ADn are connected to each other by a transmission line 34 including a dedicated call line (two lines) and a dedicated control line (two to four lines).
Performs call and call control among the collective entrance unit 32, the manager room unit 33, and the living room unit TEn.

The intercom system for multi-family housing with the above configuration is
When selecting the room number of the room unit TE ₁₁ , for example, “11” at 32, the control device 31 converts the room number into the adapter number of the adapter AD ₁₁ and sends it to the adapter ADn via the dedicated control line.

Adapter Number Adapter AD ₁₁ is sent from the control unit 31 with its own adapter number "11" in the adapter ADn "11"
Since There are matched, it is determined as the channel selection signal is active, a call control room equipment TE ₁₁ by executing the command signal sent with the channel selection signal. If the response room machine TE ₁₁ is, the adapter AD ₁₁ is the control device 31 so it sends to the controller 31 via the control dedicated line channel select signal to form a speech path set entrance unit 32 and room unit TE ₁₁ . The control device 31 also performs opening of an entrance (not shown) and transmission / reception of a security signal to / from the administrator room unit 33.

[Problem to be Solved by the Invention] The intercom system for a multi-family house having the above configuration requires at least four dedicated control lines and at least four dedicated communication lines, and the dedicated dedicated line changes the distance of the transmission path, thereby causing a hybrid balance. There are difficulties such as collapse and howling. In addition, there is a problem in that the cable laying work such as a communication control line at the branch point becomes complicated.

[Object of the Invention] The present invention has been made in view of the above-mentioned difficulties, and it is difficult for a howling to occur due to two transmission lines by using the carrier multiplex communication, and the wiring material cost and the wiring man-hour are small. It is intended to provide a device.

[Means for Solving the Problems] To achieve the above object, an intercom unit for a condominium according to the present invention includes a plurality of room units having set room numbers,
A control device that converts the room number sent from the manager room unit and the collective entrance unit into a data signal of a room code and sends the data signal to a plurality of living room units via a two-wire transmission line, and a room that has received the set room number and the received room number When the codes match, a call between the corresponding room unit and the collective entrance unit or the manager room unit is allocated to a plurality of room units by allocating the upstream voice signal to the baseband and the downstream voice signal to the plurality of room units using the frequency modulation signal channel. Multiplexing means for multiplexing on a line transmission line.

[Embodiment] Hereinafter, an embodiment of an intercom apparatus for an apartment house according to the present invention will be described in detail with reference to FIG. 1 and FIG.

As shown in FIG. 1, the intercom device for a multi-family house is composed of a control device 1, a multi-entry hall device 2, a manager room unit 3, and a living room unit TE.
n (n is 1, 2,...). Controller 1 and the terminal T ₁ of the respective room unit TEn, T ₂ are connected by a two-wire transmission line L _1, L _2, 5 KHz baseband shown in FIG. 2 in the two-wire transmission line L _1, L _2, 32KHz data signal and 95KHz frequency modulation signal (hereinafter, signals of each band are referred to as audio signal FB, data signal F
D, multiplexed signal FCHn).

The room unit TE ₁ is provided with an upstream buffer amplifier 4, a low-pass filter 5, a communication path formation circuit 6, a downstream communication / data amplifier 7, a high-pass filter 8, and a downstream communication / data switch 9 as multiplexing circuits. Is data receiver 11, room code setting device 12, SS signal device 13, SR signal device
14 will be provided.

Terminals T ₁ and T ₂ of the room unit TE ₁ are connected to the input side of the upstream buffer amplifier 4, and the output side is connected to the communication path forming circuit 6 via the low-pass filter 5. The audio signal FB is input to this path. The output side of the upstream buffer amplifier 4 is connected to the data receiver 11, and the output side of the data receiver 11 is connected to the CPU 20. The data signal FD is sent on this path.

The multiplexed output side of the communication channel formation circuit 6 is connected to one input side of the downstream communication / data amplifier 7, and the other input side of the downstream communication / data amplifier 7 is connected to the CPU 20. The multiplexed signal FCHn is input to one input side of the downstream communication / data amplifier 7, and the data signal FD is input to the other input side. The output side of the downstream call / data amplifier 7 is a high-pass filter 8,
Connected to terminals T ₁ and T ₂ via data switch 9. If downlink speech data switch 9 is closed the data signal FD and the multiplexed signal FCHn sent via the terminal T ₁ and T _2.

Further, the downstream and upstream voice sides of the communication path formation circuit 6 are connected to the communication circuit 15. The communication circuit 15 has a handset 16 and a speaker 16
a is connected, a response related to on-hook and off-hook, and an end signal are sent to the CPU 20 via the SS signal 13, and a call signal is input via the SR signal 14.

The call circuit 15 is connected to the room doorphone 18 via the doorphone interface 17, and the doorphone interface 17 is controlled by the CPU 20 to communicate with the room doorphone 18 and the handset 16.
Form a communication path between

The security device receives sensor signals from sensors Sn (n = 1 is an emergency notification sensor, n = 2 is a water leak alarm sensor, n = 3 is a fire alarm sensor, and n = 4 is a door lock alarm sensor), and security is sent to the CPU 20. Send a signal. Since the CPU 20 sends the data signal FD corresponding to the input security signal to the downstream call / data amplifier 7, the control device 1 sends the input data signal FD to the control room 3.

In collective housing intercom apparatus having the above structure [Operation of the invention], when delivering chamber number of room unit TE ₁ to the control device 1 from the set entrance device 2, the control circuit 1 a command data signal indicating the caller ID code and the chamber Code The FD is formed and transmitted to the two-wire transmission lines L ₁ and L ₂ . In room machine TE ₁ data signal FD is a station out election has been room machine TEn input via the uplink buffer amplifier 4 receives the data signal FD at the data receiver 11. When the room code of the data signal FD input from the data receiver 11 matches the room code set by the room code setting device 12, the CPU 20 validates the transmission ID code, activates the SR signal device 14, and activates the communication circuit. A call signal is transmitted from a speaker 16a connected to the speaker 15.

On the other hand, the CPU 20 closes the downstream call / data switch 9 when the room code matches, and sends the data signal FD to the downstream call / data amplifier 7 as a command code indicating that the room code matches. When responds by handset 16 in the room unit TE _1, SS signal 13 operates, CPU 20
Is the data signal corresponding to the room code + response command code
The FD is transmitted to the downstream call / data amplifier 7. Control device 1
Is the audio signal F on the up side between the entrance device 2 and the room device TE _1.
B, that is, the 5 KHZ baseband shown in FIG. 2, and the downstream side is connected by FCH ₁ (channel 1 of 95 KHz frequency modulation signal) of the multiplexed signal FCHn.

When the call ends, the SS signal unit 13 operates, and sends a data FD signal corresponding to the room code + end command to the down call / data amplifier 7.

The call between the manager room unit 3 and the room unit TEn is performed in the same procedure as described above.

[Effect of the Invention] According to the intercom apparatus for an apartment house of the present invention, howling is less likely to occur, and the number of wirings can be reduced to reduce wiring material costs and wiring man-hours.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an intercom unit for a condominium according to the present invention, FIG. 2 is a diagram showing a multiplexing frequency structure according to FIG. 1, and FIG. It is a block diagram. 1 ...... controller 3 ...... caretaker chamber machine 5 ...... set entrance machine 6 ...... speech path formation circuit (multiplexing means) L _1, L ₂ ...... _2-wire transmission path TEn ...... room machine FD ...... chamber Code data signal FB: Uplink audio signal FCHn: Frequency modulation signal

Claims (1)

(57) [Claims] 1. A plurality of room units (TEn) for which room numbers are set.
And converts the room number sent from the manager room unit (3) and the collective entrance unit (5) into a data signal (FD) of a room code, and transmits a two-wire transmission line (L ₁ , L ₂ ) The control device (1) that sends out the call, and when the set room number and the received room code match, a call between the corresponding living room unit and the collective entrance unit or the manager room unit is an upward voice. Signal (FB)
And multiplexing means (6) for allocating to the plurality of room units by a channel of a frequency modulation signal (FCHn) and multiplexing the downlink audio signal to the two-wire transmission line. Intercom equipment for multi-family housing.