KR102047076B1 - Control method of multi-channel audio system - Google Patents

Abstract

The present invention is a multi-controlled sound system including a terminal for each area, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, and an automatic path selector, and can be used simultaneously in multiple areas with a single multi-controlled sound system. It is automatically switched to idle power amplifier, so it can be used in many areas even with a small number of power amplifiers.When using multiple microphones, it can control howling can be suppressed to suppress howling and can be used automatically in case of equipment failure. The present invention relates to a control method of a multi-controlled sound system that is switched to equipment and capable of transmitting an emergency broadcast in an emergency situation such as a fire.
The present invention provides a control method of a multi-controlled acoustic system including a terminal for each region, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, and an automatic path selector. Determining whether it is a failure, and if it is a failure, going to a second increasing step of the area ID counter; In the failure determination step, if the power amplifier corresponding to the current area ID counter value is not a failure, it is determined whether the power amplifier corresponding to the current area ID counter value is in use. Going to step, the use determination step; A second incrementing step of the counter, incrementing the area ID counter by one to replace it with another power amplifier; After the second increasing step of the area ID counter, it is determined whether the value of the area ID counter is equal to the total number of areas, and if not, determining whether the area ID counter value is greater than the total number of areas, and returning to the failure determination step. ; In the judging step of determining whether the area ID counter value is larger than the total area count, if the area ID counter value is larger than the total area count, the status display indicates that there is no idle power amplifier currently available, and resets the setting data. Steps; characterized in that consisting of.

Description

Control method of multi-control sound system {Control method of multi-channel audio system}

The present invention is a multi-controlled sound system including a terminal for each area, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, and an automatic path selector, and can be used simultaneously in multiple areas with a single multi-controlled sound system. It is automatically switched to idle power amplifier, so it can be used in many areas even with a small number of power amplifiers.When using multiple microphones, it can control howling can be suppressed to suppress howling and can be used automatically in case of equipment failure. The present invention relates to a control method of a multi-control sound system that is switched to equipment and capable of transmitting an emergency broadcast in an emergency situation such as a fire.

In a company, etc., a sound system is required in each of the multiple areas such as a lecture room, seminar room, meeting room, etc., but since all the multiple areas are not always used simultaneously, it is quite expensive to have an expensive sound system in the multi-zone mode. It is non economical.

In general, in a conference room or the like, a plurality of microphones and a plurality of speakers are required to control the multi-channel sound equipment.

Multiple areas, that is, multiple systems that can be used simultaneously in multiple areas without having to install individual broadcasting equipment in multiple areas that require sound systems such as lecture rooms, seminar rooms, conference rooms, etc. A control broadcast system is needed.

For this purpose, it is a multi-control sound system including terminal by region, multi-channel preamplifier, main controller, multiple power amplifiers, and automatic path selector, and can be used simultaneously in multiple areas with a single multi-control sound system, but idle There is a need for a multi-controlled sound system that can be automatically switched to a power amplifier in use, which can be used in multiple areas with a small number of power amplifiers.

 In addition, such a multi-control sound system is likely to be mounted in a fairly large building, it is necessary that such a building automatically cuts off all its own sound signals in case of an emergency such as a fire, and is made to transmit emergency broadcasts.

Accordingly, the present invention is a multi-controlled acoustic system including a terminal for each region, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, and an automatic path selector, and can be used simultaneously in multiple areas with a single multi-controlled acoustic system. However, since it is automatically switched to the idle power amplifier, it can be used in a large number of areas with a small number of power amplifiers, and when using a microphone, the howling can be controlled by controlling the speaker that can produce howling, and automatically used when equipment failure occurs. We propose a multi-control sound system that can be switched to the available equipment and can transmit emergency broadcasting in case of emergency such as fire.

With the multiple control sound system of the present invention, i.e., the integrated multiple of the present invention in one place, without having to install individual broadcast equipment in multiple areas requiring sound systems, such as lecture rooms, seminar rooms, conference rooms, etc. When the control acoustic system is provided, each area includes only a simple terminal for signal transmission and reception, and is easy to operate and maintain. In addition, by using speaker control technology, it is possible to maintain the louder sound output level by suppressing howling that can be generated when using multiple microphones, and automatically cut off all internal sound signals in case of emergency such as fire or equipment failure. And emergency broadcast transmission is possible.

As a prior patent, Korean Patent No. 10-0786314 is a sound system for outputting a voice signal output from a sound source generator through an arbitrary speaker, a plurality of (M) amplifier, a plurality of (N) speakers, and the amplifier Sound system and control thereof, comprising an M × N matrix circuit configured to connect the speakers and the speakers to each other, wherein the optimum amplifier or combination of amplifiers to be used for the broadcast is automatically selected by the control software which performs a path automation algorithm. It is about a method.

The present invention simply outputs a voice signal output from the sound source generator to a predetermined speaker through a selected predetermined amplifier, and when a plurality of microphones and a plurality of speakers are used in a plurality of areas, a small number of amplifiers are used. It is difficult to use many areas simultaneously.

The problem to be solved by the present invention is a multi-controlled acoustic system including a terminal for each area, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, an automatic path selector, and simultaneously multiple in a single multi-controlled acoustic system. It can be used as a power amplifier, but it is automatically switched to the idle power amplifier, so it can be used in a large number of areas with a small number of power amplifiers.When using a microphone, the howling can be controlled by suppressing howling, It is to provide the control method of the multi-control sound system which is transferred to the equipment which can be automatically used at the time, and which can transmit emergency broadcasting in case of emergency such as fire.

Another problem to be solved by the present invention is that the power amplifier to be used is automatically set according to the area, and checks whether the power amplifier has a failure, and in case of failure, it is automatically switched to another power amplifier in the idle state, It is to provide a control method of a multiple control acoustic system.

Another problem to be solved by the present invention, when using a plurality of microphones in a limited space, automatically detects the microphone currently in use, the sound signal output from the speaker in close proximity to the microphone to reduce the level howling occurs It is to provide a control method of the multiple control acoustic system, which is configured to suppress the.

Another problem to be solved by the present invention is that an operator or a speaker of one area can simultaneously broadcast to a plurality of other areas without any complicated operation, and has a built-in fire signal receiving terminal so that an emergency situation can be immediately applied to all areas. It is to provide a control method of a multi-control sound system capable of transmitting emergency broadcasts.

Another problem to be solved by the present invention, the terminal for each area has a built-in control terminal that can be controlled by connecting a variety of external equipment, such as electric screen, electric elevator, the user can conveniently manipulate the external equipment according to the situation It is possible to provide a control method of a multiple control acoustic system.

In order to solve the above problems, the present invention includes a terminal for each region, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, an automatic path selector, and can be used in multiple areas simultaneously in a multiple control acoustic system. A speaker control method of a multi-control sound system for blocking or suppressing howling when using a plurality of microphones, the speaker control method comprising: detecting a sound signal from a microphone and transmitting the sound signal to a data processor when the speaker uses the microphone; The data processor determines a microphone currently in use by searching for a preset for a microphone from which an acoustic signal is detected, and comparing the acoustic signal detected in the microphone signal detection step with a preset of the microphone. ; Determining the target speaker by reading the target speaker information of the microphone currently being used from the memory unit, when the microphone being used is determined in the currently used microphone determining step; controlling the automatic path selector to control the target speaker Blocking or suppressing the target speaker to block or lower the volume; characterized in that it comprises a.

The present invention also provides a control method of a multi-controlled acoustic system including a terminal for each region, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, and an automatic path selector, the power corresponding to the current region ID counter value. Determining whether the amplifier is out of order, and if it is out of order, going to the second increasing step of the area ID counter; In the failure determination step, if the power amplifier corresponding to the current area ID counter value is not a failure, it is determined whether the power amplifier corresponding to the current area ID counter value is in use. Going to step, the use determination step; A second incrementing step of the counter, incrementing the area ID counter by one to replace it with another power amplifier; After the second increasing step of the area ID counter, it is determined whether the value of the area ID counter is equal to the total number of areas, and if not, determining whether the area ID counter value is greater than the total number of areas, and returning to the failure determination step. ; In the judging step of determining whether the area ID counter value is larger than the total area count, if the area ID counter value is larger than the total area count, the status display indicates that there is no idle power amplifier currently available, and resets the setting data. Steps; characterized in that consisting of.

In the control method of the multi-control sound system of the present invention, if the power amplifier corresponding to the current area ID counter value is not in use in the use determination step, the path is switched to the power amplifier corresponding to the current area ID counter value. And changing the path, indicating that the current path has been successfully transferred to the status display unit, and resetting the setting data.

In front of the failure determination step, the emergency signal reception determination step of determining whether an emergency signal is input (occurred); If the emergency signal is not received in the emergency signal reception determination step, it is determined by the operator whether the power amplifier has been manually switched, and if it has been manually switched, a transfer signal indicating that the power amplifier has been switched to the predetermined power amplifier is transmitted to the main controller. A manual transfer decision determination step, which goes to a failure determination step; If it is not transferred in the manual transfer determination step, the input signal and the output signal are compared to determine whether the input signal and the output signal are the same signal, and if the same, delay the predetermined time value, and then determine whether the emergency signal is received. Returning to, further comprising the step of determining whether the input signal and the output signal are the same.

In the control method of the multiple control acoustic system of the present invention, if an emergency signal is generated in the emergency signal reception determination step, the current current area ID counter value is used as an identification number of the area where an emergency situation has occurred. Identification number determination step; An input blocking step of an emergency occurrence region, which mutes all input signals to the emergency occurrence region; Determining whether there is a preset emergency alarm broadcast, and if there is no emergency alarm broadcast set, the emergency display step includes: determining whether there is a preset emergency alarm broadcast; In the step of determining whether there is a preset emergency alarm broadcast, if there is a preset emergency alarm broadcast, the power amplifier of the area where an emergency situation has occurred is transferred to another power amplifier or the entire broadcasting path of the area where an emergency situation has occurred. A broadcast path switching step; The emergency status display step of displaying the current emergency situation to the status display unit, and reset the setting data; further comprises.

The multiple control acoustic system of the present invention is a multiple control acoustic system including a terminal for each region, a multi-channel preamplifier, a main control unit, a plurality of power amplifiers, and an automatic path selector. It can be used automatically, but it is automatically switched to the idle power amplifier, so it can be used in multiple areas simultaneously with a small number of power amplifiers, and when using multiple microphones, howling can be controlled by controlling the speaker that can produce howling. It can be restrained and transferred to the equipment that can be used automatically in case of equipment failure, and emergency broadcasting can be transmitted in case of emergency such as fire. That is, if the integrated multi-control sound system of the present invention is provided in one place without installing individual broadcasting equipment in a plurality of areas requiring a sound system such as a lecture room, seminar room, conference room, etc. Only a simple terminal for transmission and reception is provided, so it is easy to operate and maintain.

According to the present invention, a power amplifier to be used is automatically set according to an area, and the power amplifier is checked for failure, and in the case of a failure, the power amplifier is automatically switched to another power amplifier in an idle state. Therefore, it is economical because there is no need to additionally reserve a separate power amplifier.

According to the present invention, when a plurality of microphones are used in a limited space, the microphones currently detected are automatically detected, and the sound signal output from the speaker in proximity to the microphone is cut off or the level is reduced to suppress howling generation.

According to the present invention, an operator or a speaker of one area can broadcast simultaneously to a plurality of other areas without additional complicated operations, and a built-in fire signal receiving terminal enables emergency broadcast transmission to all areas immediately when an emergency occurs.

That is, it is possible to simultaneously broadcast the sound source of one area to a number of other areas, which is convenient because it is possible to multi-cast by simple operation when the emergency notification delivery to the personnel of all areas is necessary. For example, in each broadcasting area such as lecture room, seminar room, meeting room, etc., the operator or speaker can broadcast to multiple areas without any complicated manipulation.

The present invention has a built-in control terminal that can be controlled by connecting various external equipment such as electric screen, electric elevator in each area terminal, the user can conveniently operate the desired external equipment according to the situation.

The present invention is advantageous in terms of space because, firstly, all regions share a single acoustic system without having a separate system, and secondly, the system is a multi-control system by a single system that is not distributed in multiple regions. Operation and maintenance is possible with the minimum number of people. Third, it is more economical than the expensive standalone system. Fourth, the standalone system cannot be used by interworking with other regions. Fifth, it is possible to simultaneously broadcast two or more areas in one area, and sixth, to the other area equipment which is in idle state automatically when the equipment assigned to the currently broadcasting area breaks down. The use path is transferred and can be used normally. Seventh, generally limited to meeting rooms In the case of using a plurality of microphones in the liver, a howling phenomenon occurs and a limitation is raised in raising the sound output level. The system of the present invention has a function of automatically suppressing or blocking the volume only for the speaker closest to the microphone in use. High sound output level can be maintained.In addition, in each region, the user can use the sound system by simple operation such as turning on the terminal power without operating various equipments, thereby reducing problems due to immature or incorrect operation. There is an advantage that it can.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram for explaining and comparing a conventional acoustic system with a multiple control acoustic system of the present invention.
2 is a schematic diagram for explaining the concept of a multiple control acoustic system of the present invention.
3 is a schematic structural diagram of a multiple control acoustic system of the present invention.
FIG. 4 is a block diagram schematically illustrating a main controller in the multiple control acoustic system of FIG. 3.
5 is a schematic circuit diagram of the automatic path selector of FIG. 3.
6 is a flowchart illustrating a speaker control method for removing howling when using a plurality of microphones in the present invention.
7 is a flowchart schematically illustrating driving of the automatic path selector of FIG. 3.
8 is a flowchart schematically illustrating a speaker control method in a multiple control acoustic system of the present invention.

Hereinafter, with reference to the accompanying drawings, a multiple control acoustic system of the present invention will be described in detail.

1 is a schematic diagram for comparing and comparing a conventional acoustic system and a multiple control acoustic system of the present invention, and FIG. 2 is a schematic diagram for explaining a concept of a multiple control acoustic system of the present invention.

Figure 1 (a) shows a conventional acoustic system, Figure 1 (b) shows a multiple control acoustic system of the present invention. As shown in (a) of FIG. 1, a sound system is provided in each of a plurality of regions, but as shown in (b) of FIG. 1, the multi-control sound system of the present invention is a multi-control sound system. Can be used simultaneously in the area.

As shown in Figure 2, the multi-control sound system of the present invention is capable of multicasting, self-broadcasting in a number of areas, such as a conference room, lecture room, seminar room, etc., and when an emergency signal is input from a fire receiver, such as (fire) emergency broadcast It is made to send. In addition, the multi-control sound system transmits usage status, failure status, etc. to the operator's personal portable terminal (eg, smart phone).

FIG. 3 is a schematic configuration diagram of a multi-controlled acoustic system of the present invention, including a local panel 110, a pre-amp 150, a main unit 200, and a power amplifier. power amp 310 and an auto path selector 350.

Local terminals 110 are terminals provided in a plurality of areas (regions) such as lecture rooms, seminar rooms, and conference rooms, and include a plurality of microphone / line level input units. Basically, the microphone / line level input unit, the terminal 110 for each region, and the speaker unit 390 are installed corresponding to each region, and their identification numbers are stored in a memory unit (not shown) of the main control unit 200. The location and so on are stored. The terminal 110 for each area may have a function of controlling environmental equipment for each area such as an electric screen. Here, the speaker unit 390 refers to a group consisting of a plurality of speakers, and the present invention has a plurality of speaker groups, that is, a plurality of speaker units 390.

The pre-amp 150 includes a plurality of channels and amplifies the sound signals input from the terminal 110 for each region. In some cases, the preamplifier 150 may further include a filter for removing noise.

The main controller 200 includes a path controller 245 and connects the sound signal input through the preamplifier 150 to a predetermined output group (ie, a power amplifier, a speaker, etc.) through a predetermined path. In addition, the main control unit 200 outputs (multi-broadcast) the emergency fire broadcast stored in the memory unit (not shown) when an emergency signal is input from the fire receiving panel 420 or the like. The main controller 200 may be driven by the setting (control) of the main controller computer (PC) 410. The main controller 410 and the main controller 200 may be referred to as main controllers.

The main control computer 410 inputs or changes the user's setting for the multi-control sound system, and also outputs the state of the multi-control sound system received through the main control unit 200 on the screen and is operated manually by the operator. By driving the main control unit 200 by. For example, whether or not the predetermined power amplifier 310 received through the main control unit 200, the emergency signal input of the fire receiving panel 420, etc. are output on the screen of the main control computer 410, and the operator outputs the result. Report, the main computer 410 is set to connect the predetermined power amplifier 310 and the predetermined speaker, the setting signal is transmitted from the main computer 410 to the main control unit 200, accordingly the main control unit 200 Connects a predetermined power amplifier 310 with a predetermined speaker. The main control unit 200 may be driven by itself without the main control computer 410, so that the main control computer 410 may be omitted in some cases.

The power amplifier 310 is a means for amplifying an acoustic signal output from the main controller 200 and includes a plurality of power amplifiers 310. In some cases, as many as the number of areas, such as lecture room, seminar room, meeting room, etc. may be provided.

The automatic path selector 350 inspects the power amplifier 310 and switches to the idle power amplifier 310 when there is an error. For example, if a power amplifier 310 corresponding to the present (basic) error is found, one of the idle power amplifiers 310 is selected (for example, selected in order) and replaced.

FIG. 4 is a block diagram schematically illustrating a main controller in the multiple control acoustic system of FIG. 3, and includes an input interface unit 205, a signal processor 230, and an output interface unit 280.

The input interface unit 205 includes an input port / UI 220, an audio receiver 215, and a data receiver 225. The input port / UI 220 receives a sound signal and a data signal which are input from the terminal 110 for each region via the preamplifier 150 or are directly input from the terminal 110 for each region, and the received sound signal is an audio signal. The signal is transmitted to the signal processor 230 through the receiver 215, and the received data signal (eg, a setting signal) is transmitted to the signal processor 230 through the data receiver 225.

Here, the data signal includes a microphone use signal indicating which microphone is currently used, which is generated by the terminal 110 for each region, in order to block a speaker close to the microphone being used, and the signal is a main keyword in the form of data. The signal processor 230 of the controller 200 transmits the signal to the signal processor 230, and the signal processor 230 of the main controller 200 blocks the target speaker using the signal.

The data signal also includes a setting signal. In other words, when an external device (electric screen, electric elevator, etc.) is operated in each terminal 110, the setting signal (operation signal) is transmitted to the main control unit 200, that is, the signal processing unit 230.

The input port / UI 220 includes an input port and a user interface (UI), the input port is an input terminal (connector) for receiving sound signals and data signals, and the UI is a forced reset button and an emergency siren generation button. It is a manual control switch, such as a means for the operator to manually generate a control signal.

The audio receiver 215 is a means for transmitting the sound signal received from the input port / UI 220 to the signal processor 230. In order to prevent data noise from entering the sound signal from the data signal, the data receiver 225 is used. And spaced apart.

The data receiver 225 is a means for transmitting the data signal received from the input port / UI 220 to the signal processor 230.

The signal processor 230 includes an input buffer 235, a signal level detector 240, a path controller 245, a level controller 250, an output buffer 255, a signal converter 260, a communication unit 265, and data. A processing unit 270 and a status display unit 275.

The input buffer 235 adjusts the signal level of the sound signal input through the audio receiver 215 of the input interface unit 205 for impedance matching. In other words, the input buffer 235 has a built-in amplifier, etc., and adjusts the signal level of the received sound signal and blocks excessive signal input.

The signal level detector 240 is a means for detecting whether a signal level of a sound signal currently being input is normal. That is, the signal level detector 240 detects the signal level of the sound signal received through the input buffer 235 while transmitting the signal output from the input buffer 235 to the path control unit 245, and communicates with the communication unit 265. Through the data processing unit 270 through.

That is, the signal level detection unit 240 transmits a signal level signal that detects whether the signal level is too weak or too high to the data processing unit 270 through the communication unit 265, and the data processing unit 270 accordingly, An input signal level display LED control signal is generated and transmitted to the status display unit 275, and according to the input signal level display LED control signal, an input signal level display LED (not shown) of the status display unit 275 is operated.

The signal level signal detected by the signal level detector 240 may also be used when checking the device state. The data processor 270 may check a device state (eg, a microphone, an amplifier, a speaker, etc.) using the received signal level signal. In addition, when using the microphone in the area-specific terminal 110, the sound is not output to the speaker, when the operator checks the overall equipment state using the main control computer 410, the value measured in the signal level detector 240 is too If it is low, it is determined that the problem is not a problem of the power amplifier 310 or the automatic path selector 350 but the problem of the terminal 110 or the preamplifier 150 for each region.

The path controller 245 is provided with a matrix circuit so as to be input to a predetermined channel of the audio receiver 215 of the input interface unit 205 and connected to be output to a predetermined channel of the output interface unit 280. The path controller 245 is performed according to a path control signal received from the data processor 270 through the communication unit 265. That is, since the path controller 245 has to output the sound signal (audio signal) input from the terminal 110 for each region through an arbitrary power amplifier 310 in the idle state, the function of the matrix concept for this purpose. This is the part to perform.

The level controller 250 adjusts the level of the sound signal received through the path controller 245 in the predetermined path according to the sound level control signal received from the data processor 270 through the communication unit 265. That is, the level control unit 250 adjusts and outputs the sound signal level input from the terminal 110 for each region to an appropriate level. When the operator manually adjusts the volume through the main computer 410, the volume control signal is transmitted from the main computer 410 to the data processing unit 270, and the data processing unit 270 is a level control unit through the communication unit 265. The control unit 250 transmits the sound signal to the level control unit 250 to adjust the sound signal level.

The output buffer 255 adjusts the sound signal before outputting to the output interface unit 280 for impedance matching. In other words, the output buffer 255 is a means for processing such as changing impedance matching and signal method (balanced / unbalanced).

The signal converter 260 is a means for converting the received data signal into a preset data format (for example, factory setting). Since the microphone or the microphone system may have different data formats for each manufacturer, the function of changing the various types of data formats into a form that the main control unit 200 can recognize is performed.

For example, in order to block a speaker close to the microphone being used in the terminal 110 for each region, the main controller 200 needs to transmit the microphone to the main control unit 200 in the form of data. If the microphone used in the area-specific terminal 110 is a conference microphone system, the main control unit 200 cannot recognize because the manufacturer has its own data protocol. Therefore, the signal converting unit is a means for converting these various data protocols into a form that the main control unit 200 can recognize.

In addition, the signal output from the signal converter 260 may be directly transmitted to the data processor 270 or may be transmitted to the data processor 270 through the communication unit 265.

It performs a function of changing various types of data formats into a form that the main control unit 200 can recognize. For example, in order to block the speaker close to the microphone being used in the terminal 110, it is necessary to transmit to the main control unit 200 in the form of data which microphone is currently used, and the main control unit blocks the target speaker using this information. . However, when the microphone used in the terminal is a conference microphone system, the main control unit 200 cannot recognize because the manufacturer has its own data protocol. Therefore, the signal converting part converts these various data protocols into a form that the main control can recognize.

The communication unit 265 is a communication interface means for transmitting and receiving signals between the signal level detection unit 240, the path control unit 245, the level control unit 250, the status display unit 275, and the data processing unit 270.

In addition, the communication unit 265 performs a communication interface function between the main control unit 200 (ie, the data processing unit 270) and the main control computer 410, and the main control unit 200 (ie, the data processing unit 270). ) And a communication interface function between the automatic path selector 350.

The data processor 270 is a means for performing a function of arithmetic processing unit (CPU, MPU) of the main control unit 200. The data processing unit 270 calculates data values input from each other means of the main control unit 200, and the path control unit 245 and the path control unit 245. The control signal is transmitted to the level controller 250. In addition, the data processing unit 270 calculates a data value input from the main control computer 410 and the automatic path selector 350, and then returns the processing result return value.

 The data processor 270 is responsible for the overall control of the signal processor 230, generates a path control signal, a level control signal, etc. according to the set signal, and transmits the same through the communication unit 265, and outputs the signal level detector 240. The signal may be received and transmitted to the status display unit 275 for display.

The status display unit 275 is a means for displaying the status (data communication status, sound (audio) level, etc.) of the current multiple control acoustic system (ie, microphone, power amplifier, speaker, etc.), and communication status display LED (not shown). , An audio level indicator LED (not shown), an error indicator LED (not shown), a fire occurrence LED (not shown), and the like. That is, the status display unit 275 receives the status display control signal output from the data processor 270 to drive the LED for status display.

The output interface unit 280 includes an audio output unit 280, a data output unit 295, and an output port 290. The audio signal is output to the audio output unit 280 provided at the output port 290, and the data signal is output to the data output unit 295 provided at the output port 290.

The audio output unit 280 is a means for outputting a sound signal, and the data output unit 295 is a means for outputting a data signal.

FIG. 5 is a schematic circuit diagram of the automatic path selector of FIG. 3. The automatic path selector 350 may include a power amplifier state detector 361, a first selector 363, a second selector 365, and a signal collector. 370).

The power amplifier state detector 361 detects an output current signal or an output voltage signal from the output terminal of the power amplifier 310 as a state detection signal and transmits it to the data processor 270 through the communication unit 265. That is, the state of the previously connected power amplifier 310 is checked.

In order to diagnose an abnormality of the power amplifier 310, after inputting a signal to the input terminal, the signal output from the output terminal is compared with the input signal to determine whether the abnormality. The state detecting unit detects the signal output from the output stage during this process. The signal pattern of the detected output signal is sent to the data processor 270, and the data processor 270 compares the signal pattern with the signal pattern of the input signal to determine whether the power amplifier is abnormal.

The data processor 270 compares the received output signal (ie, the state detection signal) with the input signal and checks whether there is a failure, and if it is not a failure, outputs it through the currently set power amplifier. In case of a failure, the first selector control signal and the second selector control signal are transmitted to the first selector 363 and the second selector 365, which are output to one of the other idle power amplifiers. For example, if the current (initial) set power amplifier fails, another idle power amplifier is selected in sequence to detect if there is a failure, and if not, the selected power amplifier outputs the failure. If the currently selected power amplifier is faulty, the next next idle power amplifier is selected to detect the fault and if it is not a fault, it is selected.

The first selector 363 and the second selector 365 are configured as relays, for example, so that the output signal of the power amplifier 310 can go out to any region among A, B, C, and D. It performs the function of connecting switch. If the region to be selected is two regions of A and B, only the first selection unit 363 is required, but the second selection unit 365 is added because the regions to be selected are four regions.

The first selector 363 is configured to select two selection terminals of the initial power amplifier selection terminal 367 and the other power amplifier selection terminal 368, and the first selector control signal of the data processor 270 is selected. One of the two terminals is selected by.

The second selector 365 is a terminal for selecting one of the other power amplifiers when the other power amplifier selection terminal 368 is selected by the first selector 363. It can have In FIG. 5, the first selection terminal, the second selection terminal, and the third selection terminal are selected.

For example, the initial setting of the first power amplifier (Amp 1) to the first speaker unit (SP A), the second power amplifier (Amp 2) to the second speaker unit (SP B), the third power amplifier (Amp 3) is configured to be connected to the third speaker (SP C), if there is no failure is connected to the initial setting. However, when the first power amplifier (Amp 1) has a failure, instead of the first power amplifier (Amp 1), instead of the first power amplifier (Amp 1), the second power amplifier (Amp 2) or the third power amplifier (Amp 3) or the fourth power amplifier (Amp) 4) is selected. The same applies to the second power amplifier Amp 2, the third power amplifier Amp 3, and the fourth power amplifier Amp 4.

As another example, when the output of the first power amplifier Amp 1 is output to the second speaker SP B, the first power selector 363 and the initial power amplifier selection terminal 367 and other power are output. The other power amplifier selection terminal 368 is selected among the amplifier selection terminals 368, and the other power amplifier selection terminal 368 is connected to the second selection unit 365, and three selections of the second selection unit 365 are performed. The first selection terminal is selected among the terminals, and the first selection terminal is connected to the second speaker part SP B.

As another example, when the output of the third power amplifier Amp 3 is output to the fourth speaker SP D, the other power amplifier selection terminal 368 is selected by the first selector 363. The other power amplifier selection terminal 368 is connected to the second selection unit 365, and the third selection terminal 365 selects the third selection terminal, and the third selection terminal is connected to the fourth speaker unit SP D. It is made to be connected.

The signal collector 370 is simply a means for physically connecting the input and the output. That is, it is a means for transmitting the signal received from the signal line selected and connected by the first selector 363 and the second selector 365 to the speaker unit.

The LED 375 can be mounted on the signal collection unit 370 to display the current operation status.

6 is a flowchart illustrating a speaker control method for removing howling when using a plurality of microphones in the present invention.

In the microphone signal detection step, the speaker uses a microphone (S10), detects an audio signal from the microphone, and transmits the sound signal to the data processor 270 (S20). The sound signal is a signal detected by the signal level detector 240 and converted into a signal converter 260.

In the current microphone determination step, the data processor 270 searches for a preset, that is, an initial setting, for the microphone from which the sound signal is detected (S30), and the sound signal detected in the microphone signal detection step and the microphone. Compare presets to determine which microphone is currently in use.

As the target speaker determination step, when the microphone currently being used is determined in the microphone determination step currently being used, the target speaker is determined by reading target speaker information of the microphone currently being used (S40). Each microphone position and a target speaker corresponding to the microphone position are previously stored in the memory unit (not shown).

As the blocking or suppressing step of the target speaker, the automatic path selector 350 is controlled (S50), so that the currently connected target speaker is turned off (off) or the volume is lowered (S60).

7 is a flowchart schematically illustrating driving of the automatic path selector of FIG. 3.

In the initializing step, when power is applied to the multiple control acoustic system to start an operation, the setting data previously set through the area-specific terminal 110 is reset (S110).

In a first incremental step of the area ID counter, the area ID counter is incremented. The area ID counter indicates an identification number (ID) of the area currently being searched (S120).

In the emergency signal reception determination step, it is determined whether the emergency signal has been input (generated) (S130), and if an emergency signal is generated, the identification number determination step (S310) of the emergency situation occurrence area goes.

In the manual switchover determination step, if the emergency signal is not received in the emergency signal reception determination step, it is determined whether the power amplifier 310 has been manually switched by the operator (S140), and if the manual switchover, the predetermined power, The transfer signal indicating the transfer to the amplifier 310 is transmitted to the main control unit 200, and the flow goes to the determination step S190.

In the step of determining whether the input signal and the output signal are the same, if it is not transferred in the manual transfer decision determination step, by comparing the input signal and the output signal (S150), it is determined whether the input signal and the output signal are the same signal (S160), If it is the same, since no sound signal is inputted, the system, that is, delayed by the time value set by the data processor 270, and then returns to the emergency signal reception determination step (S130).

In the failure determination step, it is determined whether or not the power amplifier 310 set in the current area ID counter N is in a failure state (S190). Go to the increase step (S210). In this case, the failure determination is performed by the data processor 270 to determine whether the output signal of the power amplifier state detection unit 361 is the same as the input signal and determines whether it is fixed.

In the use determination step, if it is not a failure as a result of the failure determination step (S190), it is determined whether or not the power amplifier 310 set in the current area ID counter (N) is in use (S200). The second increment step S210 of the area ID counter is reached.

In a second incremental step of the area ID counter, the area ID counter is incremented by one to replace another power amplifier 310 (S210).

In the step of determining whether the area ID counter value is greater than the total number of areas, the value of the area ID counter after the second increase step of the area ID counter to determine whether all the power amplifiers 310 of all areas have been examined for failure or not. It is determined whether the number is equal to the total number of areas (S220), and if not, the process returns to the failure determination step (S190).

In the status display step, if the area ID counter value is greater than the total area count in the step of determining whether the area ID counter value is greater than the total area count, all power amplifiers 310 of all the areas are examined for failure, and the idle power None of the amplifiers 310 is not a fault, and the status display unit 275 indicates that there is no idle power amplifier 310 which is not currently available (S230), and resets the setting data for the next use ( S260).

In the path changing step, if it is not in use status determination step, the path is changed by replacing (switching) with the power amplifier 310 of the current area ID counter (S240), and the current path is successfully performed by the status display part 275. Indicated that the transfer to (S250), and reset the setting data for the next use (S260).

When the emergency signal is generated in the emergency signal reception determination step, the identification number determination step (S310) of the emergency occurrence area is used as the identification number of the area where the emergency situation occurs (S310).

As an input blocking step of the emergency occurrence region, all of the input signals (input acoustic signals) to the emergency occurrence region are muted (S320).

As a determination step of whether there is a preset emergency alarm broadcast, it is determined whether there is a preset emergency alarm broadcast (S330), and if there is no emergency alarm broadcast set, it goes to the emergency display step (S360).

In the step of switching the broadcast path, if there is a preset emergency alarm broadcast in the step S330 of determining whether there is a preset emergency alarm broadcast, the power amplifier of the region (region E) where the emergency situation occurs is transferred to another power amplifier, The entire broadcasting path of the region (region E) where the emergency occurs is switched (S340).

In other words, since a fire has occurred in the region where the emergency occurred, that is, the region E, in the input blocking step S320 of the emergency occurrence region, after blocking all sound signals currently being broadcast, the main controller 200 The siren stored in the memory should be broadcasted to the region E. In this case, the route control unit 245 should switch the route so that the siren can be input to the power amplifier connected to the region E.

In the emergency situation display step, the status display unit 275 indicates that the current emergency situation (S360), and resets the setting data for the next use (S260).

8 is a flowchart schematically illustrating an overall speaker control method in a multiple control acoustic system of the present invention.

In the initializing step, when power is applied to the multiple control acoustic system to start an operation, the setting data previously set through the area-specific terminal 110 is reset (S110).

In the emergency signal reception determination step, it is determined whether an emergency signal has been input (generated) (S130), and if an emergency signal is generated (that is, if the emergency signal is generated T (True)), the identification number of the emergency occurrence area is determined. Go to step S310.

In the function activation determination step, if no emergency signal is input in the emergency signal reception determination step, it is determined whether any function of the multiple control acoustic system is not used (S135), and if any function of the multiple control acoustic system is used, If it is determined that the multi-control acoustic system is activated (ie, if the activation of the multi-control acoustic system is T (True)), the process goes to the step of determining whether the microphone is used (S15), and if any function of the multi-control acoustic system is used. If not, exit.

If it is determined that the use of the microphone, the multi-control sound system is activated in the function activation determination step (S135), it is determined whether the current microphone is used (S15), the microphone is not yet used, the emergency signal reception The process returns to step S130.

In the active microphone checking step, when it is determined that the microphone is used in the use of the microphone, the microphone is checked (S25), and the sound signal is detected from the microphone.

In the step of determining the target speaker, the data processor 270 searches for a preset, that is, an initial setting, for the microphone from which the acoustic signal is detected (S30), and the acoustic signal detected in the active microphone checking step and the preset of the microphone. Compare the to determine the microphone currently in use, and if the microphone currently in use is determined, read the target speaker information of the microphone currently in use to determine the target speaker (S40).

As the blocking or suppressing step of the target speaker, the automatic path selector 350 is controlled (S50), so that the currently connected target speaker is turned off (off) or the volume is lowered (S60).

In the target speaker blocking display step, the status display unit 275 indicates that the current target speaker is blocked or suppressed (S70), and resets the setting data for the next use (S260).

When the emergency signal is generated in the emergency signal reception determination step, the identification number determination step (S310) of the emergency occurrence area is used as the identification number of the area where the emergency situation occurs (S310).

As an input blocking step of the emergency occurrence region, all of the input signals (input acoustic signals) to the emergency occurrence region are muted (S320).

As a determination step of whether there is a preset emergency alarm broadcast, it is determined whether there is a preset emergency alarm broadcast (S330), and if there is no emergency alarm broadcast set, it goes to the emergency display step (S360).

In the step of switching the broadcast path, if there is a preset emergency alarm broadcast in the step S330 of determining whether there is a preset emergency alarm broadcast, the power amplifier in the area where the emergency situation has occurred is switched to another power amplifier or an emergency situation occurs. The entire broadcast path of the area is switched (S340).

In the emergency situation display step, the status display unit 275 indicates that the current emergency situation (S360), and resets the setting data for the next use (S260).

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains can make various changes without departing from the spirit of the technical idea of the present invention described in the claims below. Could be done.

110: terminal for each region 150: preamplifier
200: main control unit 205: input interface unit
215: Audio receiver 220: Input port / UI
225: data receiving unit 230: signal processing unit
235: input buffer 240: signal level detector
245: path controller 250: level controller
255: output buffer 260: signal conversion unit
265 communication unit 270 data processing unit
275: status display unit 280: output interface unit
310: power amplifier, power amplifier 350: automatic path selector
361: power amplifier state detection unit 363: first selection unit
365: second selector 367: power amplifier selection terminal
368: Other power amplifier selection terminal 370: Signal collecting unit
390: speaker unit 410: main computer
420: fire receiver

Claims (5)

delete In the control method of a multi-controlled acoustic system comprising a terminal for each area, a multi-channel preamplifier, a main controller, a plurality of power amplifiers, an automatic path selector,
Determining whether the power amplifier corresponding to the current area ID counter value is a failure, and if it is a failure, going to the second increasing step of the area ID counter;
In the failure determination step, if the power amplifier corresponding to the current area ID counter value is not a failure, it is determined whether the power amplifier corresponding to the current area ID counter value is in use. Going to step, the use determination step;
A second incrementing step of the counter, incrementing the area ID counter by one to replace it with another power amplifier;
After the second increasing step of the area ID counter, it is determined whether the value of the area ID counter is equal to the total number of areas, and if not, determining whether the area ID counter value is greater than the total number of areas, and returning to the failure determination step. ;
In the judging step of determining whether the area ID counter value is larger than the total area count, if the area ID counter value is larger than the total area count, the status display indicates that there is no idle power amplifier currently available, and resets the setting data. step;
Including, but before the failure determination step,
Determining whether an emergency signal has been input;
If the emergency signal is not received in the emergency signal reception determination step, it is determined by the operator whether the power amplifier has been manually switched, and if it has been manually switched, a transfer signal indicating that the power amplifier has been switched to the predetermined power amplifier is transmitted to the main controller. A manual transfer decision determination step, which goes to a failure determination step;
If it is not transferred in the manual transfer determination step, the input signal and the output signal are compared to determine whether the input signal and the output signal are the same signal, and if the same, delay the predetermined time value, and then determine whether the emergency signal is received. Determining whether the input signal and the output signal are identical;
The control method of a multiple control acoustic system, characterized in that further comprises. The method of claim 2,
If the power amplifier corresponding to the current area ID counter value is not in use at the use determination stage, the path is changed by switching to the power amplifier corresponding to the current area ID counter value, and the current path is successfully transferred to the status display unit. A path changing step of displaying, and resetting the setting data;
The control method of a multiple control acoustic system, characterized in that further comprises. delete The method of claim 3,
If an emergency signal is generated in the emergency signal reception determination step, determining the current current area ID counter value as an identification number of the area where an emergency situation has occurred;
An input blocking step of the emergency generating region, after the identification number determination step of the emergency generating region, mutes all input signals to the emergency generating region;
Determining whether there is a preset emergency alarm broadcast, and if there is no emergency alarm broadcast set, if there is a preset emergency alarm broadcast, determining whether there is a preset emergency alarm broadcast;
In the step of determining whether there is a preset emergency alarm broadcast, if there is a preset emergency alarm broadcast, the power amplifier of the area where an emergency situation has occurred is transferred to another power amplifier or the entire broadcasting path of the area where an emergency situation has occurred. A broadcast path switching step;
An emergency situation display step of displaying a current emergency situation with a status display unit and resetting setting data;
The control method of a multiple control acoustic system, characterized in that further comprises.

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