JP3090797B2 - Broadcast communication network - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast communication network for controlling communication in broadcast equipment for general business broadcasts and emergency broadcasts.

[0002]

2. Description of the Related Art In a broadcasting facility for general business broadcasting or evacuation guidance broadcasting in the event of a fire in a specific area where a plurality of buildings such as a shopping center are gathered in a single building or a shopping center, centralized management of broadcasting is performed. In order to do so, it is necessary to set up a broadcasting room and disaster prevention center. On the other hand, in general business broadcasting, functions required for broadcasting have been diversified, such as subdivision of specific areas and changes in broadcast content according to time.

[0003] Conventional broadcasting equipment is generally as shown in FIG. There is a main broadcast control unit 31 installed in a broadcast room or disaster prevention center, etc., a power amplifier 33 for supplying drive power to each speaker therein, and a BGM.
A sound source 35 such as a performance device is provided, and each speaker line 37 is radially connected to the outside from a power amplifier 33 connected to the sound source 35, and a specific area (for example, inside a large building or shopping) The speaker 41 and the local amplifier 39 in one set area where buildings such as a center are gathered) are connected, and another speaker 41 is further connected from the local amplifier 39.

In such a conventional broadcasting facility, a BGM performance from a power amplifier 33 of a main body broadcast control unit is usually directly connected to a speaker or a local amplifier placed in each specific area via a speaker line. And so on. Also, the local amplifier switches the broadcast, so that the broadcast suitable for the specific area is played,
Switching of the broadcast from the main broadcast control unit is not normally controlled, and is performed only during an emergency broadcast.

[0005]

However, in recent years, the number of cases such as renovation or rebuilding of buildings, layout changes, and transfer of operation management has increased, and accordingly the broadcasting system must be changed. It is rarely useful permanently. And every time the broadcasting system was changed, it was necessary to carry out wiring work. In that case, in the above-mentioned conventional broadcasting equipment, when the broadcast system is changed, a speaker line extending from the main body broadcast control unit to each speaker or the local amplifier has to be added or changed.

[0006] In addition, due to the recent labor shortage and the fact that it is very rare that the broadcasting system can be changed quickly in accordance with the changing form of the building, it is very rare that the There has been a strong demand for the development of a system that can perform a simple and quick system change.

Further, in the conventional broadcasting equipment, as described above, a broadcast suitable for a specific area is performed by a local amplifier located in each specific area. The switching of the broadcasting is almost only at the time of emergency broadcasting, and it cannot respond to the diversification of functions required for the entire broadcasting system including the control from the main broadcasting equipment as described above.

[0008] Accordingly, the present invention has been made in view of the above-mentioned problems, and has been made in consideration of the speaker line from the main body broadcast control unit when the broadcasting system is changed due to extension or renovation of a building, change of layout, transfer of operation management, and the like. It is an object of the present invention to provide a broadcast communication network that can easily and quickly change a broadcast system without requiring addition or change of a broadcast system.

Further, the present invention provides a method for controlling the change of broadcast contents from the main broadcast equipment, a method for coping with a failure, and the like.
The purpose is to diversify broadcasting and device functions.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a main body broadcast facility including a main body broadcast control section and a main body sound source, and is installed in one or more specific areas remote from the main body broadcast facility. And one or more local amplifiers interconnected with the main body broadcasting equipment via a bus line, and one or more local amplifiers connected via a speaker line from the local amplifier to emit broadcasts from the main body sound source and the own sound source. And a control signal bus line including at least one channel for transmitting a control signal by connecting the main body broadcast control unit and the at least one local amplifier. , The main body sound source and the 1
An audio signal bus line including one or more channels for transmitting an audio signal by connecting to the local amplifier, wherein each of the local amplifiers includes a microprocessor for controlling the local amplifier and an audio for driving each of the speakers. And a power amplifying function of outputting a signal.

According to the present invention, further, the microprocessor operates individually and operates under the control of the main body broadcast control unit, and the broadcast from the main body broadcast equipment is controlled by the control of the main body broadcast control unit. It is characterized by switching between broadcasting from its own sound source by individual operation of a local amplifier.

According to the present invention, furthermore, the microprocessor may be controlled by the main broadcast control unit to control a failure on the local amplifier side such as a charging state of an emergency broadcast storage battery provided in each of the local amplifiers or a short-circuit state of the speaker line. The state of occurrence is periodically monitored, the data is collected and notified to the main broadcast control unit, and the main broadcast control unit sequentially displays the data as needed. It is.

In the present invention, each of the local amplifiers may be assigned a unique priority order for a plurality of types of broadcasts, and the priority order is controlled by the microprocessor in response to activation of a broadcast from the main broadcast control unit. It is characterized in that it is determined whether or not to broadcast from the main body broadcast control section in light of the above.

In the present invention, the control signal bus line and the audio signal bus line may be extended via a relay function on the way, and further branched and connected to each of the local amplifiers via each of the relay functions. It is characterized in that a direct connection is made without passing through the relay function at the time of failure utterance of the relay function.

[0015]

According to the present invention, the connection between the main broadcasting equipment and the local amplifiers in one or more specific areas can be controlled by using the analog audio signal and the digital control without using a separate speaker line. The bus line system includes one or more channels for transmitting signals, and the power amplification function, which was conventionally placed in the main broadcast control unit, is distributed to each local amplifier. No change of line was required, making it very easy and quick to change the broadcasting system.

Further, by mounting a microprocessor in each local amplifier and enabling control from the main body broadcast control unit, the broadcast from the main body broadcast equipment and the broadcast for each local amplifier can be easily performed from the main body broadcast control unit. The control can be switched. Also, by using a microprocessor to determine whether or not to switch to the broadcast when a broadcast start is received from the main broadcast control unit in accordance with the priority set in the local amplifier, various types of broadcast contents can be obtained. Can be realized. In addition, it achieves many functions such as occurrence of failures such as short-circuiting of speaker lines, monitoring of charging status of emergency broadcast storage batteries and data collection, and notification and display of the fact to the main broadcast control unit. Is now available.

Also, by connecting a repeater in the middle of the bus line, it is possible to prevent signal attenuation and deterioration of the signal-to-noise ratio, and to enable long-distance transmission.
In the event of a power failure in an emergency, the relay is connected directly to prevent interruption of information transmission.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an explanatory diagram showing a broadcast communication network according to one embodiment of the present invention. In FIG. 1, 1
Is the main broadcasting equipment installed in a broadcasting room or disaster prevention center, etc.
Reference numeral 3 denotes a buffer amplifier for outputting an analog audio signal from a sound source such as a BGM playing device or a microphone provided in the main broadcast equipment 1 to a bus line, and 5 a main broadcast control for controlling the operation of each local amplifier. Unit 7, an audio signal bus line including one or more channels for transmitting an analog audio signal, 9 a control signal bus line including one or more channels for transmitting a digital control signal bidirectionally, 11 a control signal bus line and A repeater connected midway on the audio signal bus line and relaying an analog audio signal and a digital audio signal transmitted on the bus line;
Reference numeral 13 denotes a local amplifier which is connected to a bus line via a repeater and controls the broadcast from the buffer amplifier 3 of the main broadcast equipment 1 and the broadcast from its own sound source. Reference numeral 15 denotes a speaker which utters an audio signal from the local amplifier 13. is there.

Reference numeral 17 denotes a speaker 1 which amplifies the power of the analog audio signal transmitted through the audio signal bus line 7.
5 is a power amplification function, and 19 is each local amplifier 1
3, a priority determination function for determining whether or not to switch to broadcasting from the main broadcasting equipment 1 under the control of the main broadcasting control unit 5, a failure occurrence such as a short circuit of a speaker line, or a storage battery for emergency broadcasting. A microprocessor that monitors the charging state of the battery and notifies the main broadcast control unit of information obtained as a result of monitoring under the control of the main broadcast control unit. Is connected to the main broadcast equipment 1 and operates in an emergency such as when a fire occurs, and an automatic fire alarm 25 required when this broadcast communication network is used as an emergency broadcast device. Is a repeater to which no local amplifier is connected.

Next, the operation of the broadcast communication network according to this embodiment will be described with reference to FIG. An analog audio signal emitted from a sound source in the main broadcast equipment 1 is amplified by a buffer amplifier 3 and output to an audio signal bus line 7. The analog audio signal output to the audio signal bus line 7 is transmitted via the repeater 11,
1 when passing through the local amplifier 1
3 and input to the power amplification function 17. The audio signal amplified by the power amplification function 17 is output to the speaker 15 and drives the speaker 15 to produce a voice.

On the other hand, the main body broadcast control unit 5 controls each local amplifier 13 via the control signal bus line 9 and the repeater 11.
Are connected to each other with respect to a microprocessor 19 mounted thereon, and transmit digital control signals in both directions.
The microprocessor 19 can be controlled by a digital control signal transmitted from the main broadcast control unit 5 via the control signal bus line 9 and the repeater 11, and can control the broadcast from the buffer amplifier 3 of the main broadcast equipment 1 and the local control. It can be used to control many functions in addition to the functions described below, such as switching to individual amplifier broadcasts.

For example, the abnormal state such as the state of charge of the storage battery for emergency broadcast provided in each local amplifier, the state of occurrence of a fault on the local amplifier side such as the short-circuit state of the speaker line, etc. And periodically returns the collected data in response to a request from the main broadcast control unit 5 so that the main broadcast control unit 5 can immediately detect an abnormal state of the entire system.

A plurality of types of broadcasts are assigned to respective local amplifiers 13 using a microprocessor 19, and a priority order unique to each local amplifier is assigned.
, It is determined whether or not to switch the local amplifier to the broadcast from the main broadcast equipment based on the priority order. That is, when the broadcast activation between the main broadcast equipment 1 and the local amplifier 13 competes, it is determined whether to move the right to broadcast to the main broadcast equipment 1 or to maintain the local amplifier 13 in accordance with the priority broadcast order. The general business broadcast can also be multifunctional as determined by the processor 19.

The determination of the priority broadcast order is, specifically,
For example, the microprocessor 19 of the local amplifier 13
And the priority broadcast order transmitted from the main broadcast equipment 1 may be compared with the priority broadcast order set in the main broadcast facility 1 so as to perform the higher priority broadcast order. As can be seen from the above description, it can be understood that the control signal bus line 9 can transmit a control signal bidirectionally between the microprocessor 19 and the main body broadcast control unit 5 to execute multifunctional system management. There will be.

According to the present invention, unlike the conventional broadcast communication network, the power amplifier of the main body broadcast control unit is not wired radially to each speaker, but is connected in series to the bus line via the bus line. Therefore, the length of the bus line becomes longer, which causes problems of signal attenuation and deterioration of the signal-to-noise ratio. However, by connecting the repeaters 11 and 25 on the bus line, the problems are completely eliminated. We were able to. When the bus line becomes long, the repeater 11 may be connected anywhere on the bus line. For example, instead of connecting a local amplifier as in the repeater 25, the repeater 11 is simply used as necessary for relaying the bus line. You may.

[0026]

As described above, according to the present invention, the power amplifiers conventionally placed in the main broadcast control section are distributed to the respective local amplifiers, and the connection from the main broadcast equipment to the respective local amplifiers is made a bus line system. , And by installing a microprocessor in each local amplifier,
The connection wiring from the main broadcasting equipment has been greatly reduced, and even when the broadcasting system is changed, it is not necessary to change the bus line part. Now you can have many features.

That is, it is possible to switch between the broadcast from the main broadcast equipment and the individual broadcast of the local amplifier by the control by the control signal from the main broadcast control unit, and set the individual amplifiers to the individual priorities. In the case of contention for broadcast activation, the right to broadcast can be determined according to the priority order, whether to broadcast on the main broadcast facility or on the local amplifier. Is now available.

Further, according to the present invention, the occurrence of a failure such as the state of charge of the storage battery for emergency broadcast in each local amplifier or the abnormal state of the local amplifier such as the short-circuit state of each speaker line is immediately notified to the main broadcast control unit via the bus line. I was able to take quick action. In addition, by connecting a repeater in the middle of the bus line, signal attenuation and deterioration of the signal-to-noise ratio can be prevented, and long-distance transmission is enabled. In such a case, it is possible to prevent interruption of information transmission by directly connecting the repeater.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of a broadcast communication network according to an embodiment of the present invention;

FIG. 2 is a schematic explanatory diagram of a conventional broadcast communication network.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 main broadcast equipment 3 buffer amplifier 5 main broadcast control unit 7 audio signal bus line 9 control signal bus line 11 repeater 13 local amplifier 15 speaker 17 power amplification function 19 microprocessor 21 speaker line 23 automatic fire alarm 25 repeater 31 main unit Broadcast control unit 33 Power amplifier 35 Sound source 37 Speaker line 39 Local amplifier 41 Speaker

Claims (5)

(57) [Claims] 1. A main broadcast equipment including a main broadcast control unit and a main sound source, and installed in one or more specific areas remote from the main broadcast equipment and interconnected with the main broadcast equipment via a bus line. A broadcast communication network comprising: at least one local amplifier; and at least one speaker connected to the local amplifier via a speaker line to generate a broadcast from the main body sound source and the own sound source. A control signal bus line including one or more channels for transmitting a control signal by connecting the main broadcast control unit and the one or more local amplifiers;
An audio signal bus line including one or more channels for transmitting an audio signal by connecting to the local amplifier, wherein each of the local amplifiers includes a microprocessor for controlling the local amplifier and an audio for driving each of the speakers. A broadcast communication network, comprising: a power amplification function for outputting a signal. 2. The microprocessor operates independently and operates under the control of the main broadcast control unit, and controls the broadcast from the main broadcast equipment and the local amplifier under the control of the main broadcast control unit. 2. The broadcasting communication network according to claim 1, wherein the switching from the broadcasting from the own sound source by the operation is performed. 3. The microprocessor is controlled by the main broadcast control unit to control the state of charge of an emergency broadcast storage battery provided in each of the local amplifiers, the state of a short circuit in the speaker line, and the like, and the state of occurrence of a fault in the local amplifier. 2. The apparatus according to claim 1, wherein the main broadcast control unit periodically monitors the data, collects the data, and notifies the main broadcast control unit of the data, and the main broadcast control unit sequentially displays the data as needed. Broadcast communication network. 4. Each of the local amplifiers is assigned a unique priority for a plurality of types of broadcasts,
The system according to claim 1, wherein when the broadcast from the main broadcast control unit is started, it is determined whether or not to perform the broadcast from the main broadcast control unit based on the priority order under the control of the microprocessor. 2. The broadcast communication network according to 1. 5. The control signal bus line and the audio signal bus line are extended through a relay function on the way, and further branched and connected to each of the local amplifiers via each of the relay functions. 2. The utterance is directly connected without passing through the relay function at the time of utterance.
5. The broadcast communication network according to 2, 3, or 4.