KR102089672B1 - Premises broadcasting system - Google Patents

Abstract

The present invention relates to a premises broadcasting system that actively copes with power or amplifier failure by controlling a matrix included in the premises broadcasting system. An on-premises broadcasting system according to an embodiment of the present invention includes a power supply unit including a plurality of power supplies; A multi-channel amplifier that includes a plurality of amplifiers, which opens a broadcasting channel through each amplifier and amplifies and transmits audio; A plurality of power input lines and a plurality of power output lines are formed, the power input lines are connected to a power supply, the power output lines are connected to an amplifier, and the power input lines and the power output lines are disposed at a crossing point. Power matrix including a switch of the; And controlling the switches included in the power matrix to form power paths to provide power to the amplifiers to operate one or more amplifiers, acquiring and analyzing the status of each power supply, when a failure is detected at a specific power supply, the power It includes a control device characterized in that the switch of the power supply matrix to control the switch of the power supply matrix to turn off the switch connected to the faulty power supply among the switches of the matrix to supply power to the amplifier.

Description

Premises broadcasting system

The present invention relates to a premises broadcasting system, and more particularly, to a premises broadcasting system that actively copes with power or amplifier failure by controlling a matrix included in the premises broadcasting system.

Organizations such as corporations and schools transmit broadcast messages using premises broadcasting systems to deliver key messages to members. For example, the school broadcasting room transmits the broadcasting to the speakers provided in each classroom by using the on-premises broadcasting system to perform major daily notification, fire training notification, or listening evaluation. The following patent document discloses a method for implementing a remote premises broadcasting exchange system through digital relay line matching.

The premises broadcasting system is composed of multiple channels, and one or more speakers are connected to each channel. For example, a plurality of speakers installed in a playground may be connected to a 1-channel amplifier, a plurality of speakers installed in an auditorium may be connected to a 2-channel amplifier, and a plurality of speakers installed on the first floor may be connected to a 3-channel amplifier, and the administrator may select channels. By selecting it, broadcast audio can be output to the speaker of the corresponding channel.

Power is connected to each amplifier in the multi-channel premises broadcasting system. In a conventional premises broadcasting system, a single power supply supplies power to a plurality of amplifiers. However, in a structure in which a single power source and a plurality of channels are connected, when a power source fails or a specific amplifier fails, there is a problem in that the operation of the entire premises broadcasting system is stopped.

Korean Patent Publication No. 10-1999-0038842 (released on June 5, 1999)

The present invention has been proposed to solve this problem, and even if a specific channel failure occurs, the object is to provide an on-premises broadcasting system that handles the failure through matrix control and performs a seamless broadcasting service.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by examples of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention can be realized by means of the appended claims and combinations thereof.

An on-premises broadcasting system according to the present invention for achieving the above object includes: a power supply unit including a plurality of power supplies; A multi-channel amplifier that includes a plurality of amplifiers, which opens a broadcasting channel through each amplifier and amplifies and transmits audio; A plurality of power input lines and a plurality of power output lines are formed, the power input lines are connected to a power supply, the power output lines are connected to an amplifier, and the power input lines and the power output lines are disposed at a crossing point. Power matrix including a switch of the; And controlling the switches included in the power matrix to form power paths to provide power to the amplifiers to operate one or more amplifiers, acquiring and analyzing the status of each power supply, when a failure is detected at a specific power supply, the power It characterized in that it comprises a control device characterized in that it controls the switch of the power supply matrix to turn off the switch connected to the faulty power supply among the switches of the matrix and a power supply that operates normally to supply power to the amplifier.

When a failure occurs in the power supply unit, the control unit checks the total supply capacity of the plurality of power supply units that are operating normally and the total output capacity of the plurality of operational amplifiers, and if the total supply capacity is less than the total output capacity, substantially The output of each amplifier may be reduced such that the total output capacity of each output amplifier is equal to or less than the total supply capacity.

The control device may reduce the output of the amplifier by reducing the gain or volume of each amplifier.

The control device may analyze the state information of the power supply, and when the voltage or current of the power supply is out of a normal range or the temperature of the power supply exceeds a threshold temperature, it may be determined that a failure occurs in the power supply.

The control device may control a switch of the power matrix so that all of the normally operated power supplies share and supply power to each operational amplifier.

The premises broadcasting system forms a plurality of audio input lines and a plurality of audio output lines, the audio input lines are connected to an amplifier, and the plurality of switches are arranged at a point where the audio input lines and the audio output lines intersect. An audio matrix may be further included.

In this case, the control device controls an switch included in the audio matrix to form an audio path.

The control device acquires and analyzes the state of each amplifier, and when a failure is detected in a specific amplifier, the switch connected to the failed amplifier among the switches of the audio matrix is turned off, and audio is transmitted through a spare amplifier instead of the failed amplifier. The switch of the audio matrix may be controlled as much as possible, and the switch of the power matrix may be controlled such that power to the faulty amplifier is cut off and power is supplied to the spare amplifier.

The control device may analyze the state information of the amplifier and determine that a failure has occurred in the amplifier when the difference between the audio input signal level and the audio output signal level exceeds a threshold difference.

The present invention implements the power matrix to supply power between multi-power and multi-channel amplifiers, and when a specific power supply fails, power generated from a normal power supply is supplied to the amplifier through switch control of the power matrix. , Has the advantage of being able to actively cope with power failures.

In addition, the present invention is provided with a spare amplifier, even if a specific amplifier fails, through the switch control of the audio matrix, the spare amplifier replaces the output function of the failed amplifier, thereby having the advantage of actively coping with the amplifier failure. have.

In addition, the present invention has the advantage of improving the life of the amplifier and stabilizing the entire broadcasting system by adjusting the output of the amplifier by detecting the overcurrent of the amplifier that may occur due to power failure in advance.

In addition, the present invention is to control the switches of the power matrix, so that each power supply is divided for each currently operating channel (i.e., to share the load), thereby preventing a specific power supply from being idle and improving the life of the entire power supply. There are also advantages.

The following drawings attached to this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with specific details for carrying out the invention, so the present invention is described in such drawings. It should not be interpreted as being limited to the matter.
1 is a view showing the configuration of a premises broadcasting system according to an embodiment of the present invention.
2 is a view showing the configuration of a power matrix, according to an embodiment of the present invention.
3 is a diagram showing the configuration of an audio matrix according to an embodiment of the present invention.
4 is a view showing the configuration of a control device according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a switch state of a power matrix when a plurality of amplifiers are operating according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a switch state of a power matrix when some amplifiers are operating according to another embodiment of the present invention.
7 is a diagram illustrating a switch state of a power matrix when a failure occurs in a power supply according to an embodiment of the present invention.
8 is a diagram illustrating a switch state of an audio matrix when a plurality of amplifiers are operating according to an embodiment of the present invention.
FIG. 9 is a diagram illustrating a switch state of a power matrix when a failure occurs in an amplifier according to an embodiment of the present invention.
10 is a diagram illustrating a state of a switch in an audio matrix when a failure occurs in an amplifier according to an embodiment of the present invention.
11 is a flowchart illustrating a method of controlling a power matrix by monitoring a failure of a power supply in an premises broadcasting system according to an embodiment of the present invention.

The above objects, features, and advantages will become more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains can easily implement the technical spirit of the present invention. There will be. In addition, in the description of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a premises broadcasting system according to an embodiment of the present invention.

As shown in FIG. 1, the premises broadcasting system according to an embodiment of the present invention includes a power supply unit 100, a power supply matrix 200, a multi-channel amplifier unit 300, an audio matrix 400, and a plurality of output devices ( 510, 520, 530) and a control device 600.

The power supply unit 100 includes a plurality of power supply units 110, 120, and 130. The power supplies 110, 120, and 130 may convert AC (AC) power into DC (DC) power to supply DC power to the power matrix.

Each power supply (110, 120, 130) includes a sensor (not shown in the drawing), and the sensor senses the state of the power, that is, voltage, current, and temperature, and senses the state of the sensed power supply. Transfer to the control device 600.

The output devices 510, 520, and 530 are output means such as speakers, and are connected to the audio matrix 400 to output audio received through the audio matrix 400. Meanwhile, a certain number of output devices 510, 520, and 530 may be set as one group. For example, a plurality of output devices may be set as one group and installed on the playground, and other output devices may be set as a group and installed at the auditorium.

An audio splitter may be provided between the audio matrix 400 and the output devices 510, 520, and 530, and the audio splitter may distribute output lines to speakers belonging to the same group.

The multi-channel amplifier unit 300 supports a plurality of channels, and amplifies the audio signal by a preset output value and transmits it to the audio matrix 400. The multi-channel amplifier unit 300 includes a plurality of amplifiers 310 to 340 that can operate as independent channels, and particularly includes a spare amplifier 340. In FIG. 1, the spare amplifier 340 is illustrated as one, but a plurality of spare amplifiers may be included in the multi-channel amplifier unit 300.

Each of the amplifiers 310 to 340 operates according to the control device 600, in charge of an independent channel, and transmits an audio signal to the channel. The amplifiers 310 to 340 receive an audio sound source under control from the control device 600, amplify the audio sound source to a size corresponding to the set output power, and transmit it to the audio matrix 400.

The standby amplifier 340 is on standby in a standby state, and when a failure occurs in any one of the first to third amplifiers 310 to 330, it is activated and operated by the control of the control device 600. In addition, each of the amplifiers 310 to 330 attenuates the audio signal output by the control of the control device 600.

Each amplifier (310 ~ 340) is provided with a sensor (not shown in the figure), each sensor is the state of the amplifier (310 ~ 340), that is, the audio input signal level (dBm), audio output signal level, current, The state of the amplifier including the voltage is measured and transmitted to the control device 600.

The power supply matrix 200 is installed between the power supply unit 100 and the multi-channel amplifier unit 300, and has a grid-shaped power input line and a power output line to form a multi-power path. That is, the power matrix 200 forms a power input line and a power output line in an X × Y arrangement. The power input line and the power output line may be formed in a printed circuit board (PCB) pattern.

2 is a view showing the configuration of a power matrix, according to an embodiment of the present invention.

2, a plurality of power input lines 21-1, 21-2 and 21-3 and a plurality of power output lines 22-1 to 22-4 are formed in the power matrix 200. . The power input lines 21-1, 21-2, and 21-3 may be formed in 1: 1 correspondence with the power supplies 110, 120, and 130, and may be formed in N: M correspondence.

The number of power input lines 21-1, 21-2, 21-3 may correspond to the number of power supplies 110, 120, 130, or power input lines 21-1, 21-2, 21 The number of -3) may be less or more than the number of power supplies 110, 120, and 130. In the drawing, the power input lines 21-1, 21-2, 21-3 correspond 1: 1 with the power supply 110, 120, 130, and the power input lines 21-1, 21-2, 21-3 ) Is illustrated as being equal to the number of power supplies 110, 120, 130.

Meanwhile, the power output lines 22-1 to 22-4 may be formed in 1: 1 correspondence with the amplifiers 310 to 340, and may be formed in correspondence with N: M. The number of power output lines 22-1 to 22-4 may correspond to the number of amplifiers 310 to 340, or the number of power output lines 22-1 to 22-4 may be amplifiers 310 to 340 ). In the drawing, the power output lines 22-1 to 22-4 correspond 1: 1 to the amplifiers 310 to 340, and the number of power output lines 22-1 to 22-4 is equal to that of the amplifiers 310 to 340. It is illustrated as being equal to the number.

In the power matrix 200, switches 23-1 to 23-12 are disposed at a point where an input power line and an output power line intersect. When the switches 23-1 to 23-12 are turned on, power generated from the power supplies 110, 120, and 130 is supplied to the amplifiers 310-340. The switches 23-1 to 23-12 are turned on or off by the control of the control device 600. In FIG. 2, all the switches 23-1 to 23-12 are turned off.

The audio matrix 400 is installed between the multi-channel amplifier unit 300 and the output devices 510, 520, and 530, and the audio signals generated by the multi-channel amplifier unit 300 are designated output devices 510, 520, and 530. ).

The audio matrix 400 includes a grid-like audio input line and an audio output line to form a multi-channel audio path. That is, the audio matrix 400 forms an audio input line and an audio output line in a Y × Z arrangement. The audio input line and the audio output line may be formed in a printed circuit board (PCB) pattern.

3 is a diagram showing the configuration of an audio matrix according to an embodiment of the present invention.

As shown in FIG. 3, a plurality of audio input lines 33-1 to 31-4 and a plurality of audio output lines 32-1 to 32-3 are formed in the audio matrix 300. The audio input lines 33-1 to 31-4 may be formed in one-to-one correspondence with the amplifiers 310 to 340, and the number of audio input lines 33-1 to 31-4 may be amplifiers 310 to 340. It can correspond to the number of. Meanwhile, the audio output lines 32-1 to 32-3 are connected to the output devices 510, 520, and 530.

In the audio matrix 400, switches 33-1 to 33-12 are arranged at a point where an audio input line and an audio output line intersect. When the switches 33-1 to 33-12 are turned on, audio signals generated from the amplifiers 310 to 340 are transmitted to the output devices 510, 520, and 530. The switches 33-1 to 33-12 are turned on or off by the control of the control device 600. In FIG. 3, all the switches 33-1 to 33-12 are turned off.

The control device 600 controls the state of each switch included in the power matrix 200 and \ audio matrix 400 to form a power path and an audio path. The control device 600 may be connected to and communicate with each of the power supply unit 100, the power supply matrix 200, the multi-channel amplifier unit 300, and the audio matrix 400 through a cable or a bus line.

The control device 600 also provides an audio source to the multi-channel amplifier unit 300. In addition, the control device 600 controls the switch included in the audio matrix 400 under the control of the administrator to open an audio channel and transmit audio to the audio channel.

The control device 600 analyzes the information collected through each sensor, checks the status of each of the power supplies 110, 120, and 130, and also checks the status of each of the amplifiers 310 to 340. The control device 600 controls a switch included in the power matrix 200 to form a power path between one or more power supplies 110, 120, 130 and one or more amplifiers, and power is supplied to the amplifier through the power path To make.

Meanwhile, when a specific power supply failure is detected, the control device 600 controls a switch included in the power matrix 200 to turn off all switches connected to the failed power supply, and is generated from another power supply that normally operates. The switch is controlled so that power is supplied to the amplifier.

The control device 600 analyzes the information received from the sensors installed in the amplifiers 310 to 340 to motor whether the amplifiers 310 to 340 are faulty. When the control device 600 detects a failure of the amplifier, it controls the switch included in the audio matrix 400 to turn off all switches connected to the failed amplifier, and connects the spare amplifier 340 and an output device to connect the spare. The amplifier 340 transmits audio on behalf of the failed amplifier.

4 is a view showing the configuration of a control device according to an embodiment of the present invention.

4, the control device 600 according to an embodiment of the present invention includes a storage module 610, a communication module 620, a monitoring module 630, a matrix control module 640, and an output control module 650, such components may be implemented in hardware or software, or may be implemented through a combination of hardware and software. In addition, the control device 600 may include one or more memories and processes, and the monitoring module 630, the matrix control module 640, and the output control module 650 are in the form of programs executed by the process. It may be mounted on the memory.

The storage module 610 is a storage means such as a memory and a disk device, and stores status information for each power supply and status information for each amplifier. In addition, the storage module 610 stores failure occurrence information. In addition, the storage module 610 can store the supply capacity of each power supply, and can also store the output capacity for each amplifier.

The communication module 620 is a means for supporting wired communication or wireless communication, and includes a power supply unit 100, a power supply matrix 200, a multi-channel amplifier unit 300, and an audio matrix 400 through a cable, bus line, or wireless communication. It is connected to and communicates with. In addition, the communication module 620 may communicate with an external broadcast server (not shown in the drawing) and receive channel setting information and sound source setting information from the broadcast server.

The monitoring module 630 performs a function of acquiring data measured by each sensor. Specifically, the monitoring module 630 collects the state information of each power supply measured by the power sensor and stores it in the storage module 610, and analyzes the state information to monitor whether the power supply is faulty. At this time, the monitoring module 630 checks the current included in the status information of the power supply, checks whether the current is within the normal current range, and if the current is out of the normal range, it may be determined that the power supply has failed. . In addition, the monitoring module 630 checks the voltage included in the status information of the power supply, checks whether the voltage is within the normal voltage range, and if the voltage is out of the normal range, it may be determined that a failure occurs in the power supply. . In addition, the monitoring module 630 checks the temperature included in the status information of the power supply, checks whether the temperature has exceeded the threshold temperature, and if it exceeds the threshold temperature, may determine that the power supply has failed. .

In addition, the monitoring module 630 collects status information of each amplifier measured by the amplifier sensor and analyzes the status information to monitor whether the amplifier has failed. The monitoring module 630 checks the audio input signal level (dBm) and the audio output signal level (dBm) included in the state information of the amplifier, and the difference between the audio output signal level and the audio input signal level is a threshold difference. It is determined whether or not it is exceeded, and if the threshold difference is exceeded, it may be determined that the corresponding amplifier has failed. In addition, the monitoring module 630 checks the current (or voltage) included in the state information of the amplifier, checks whether the current (or voltage) is within a preset normal range, and if it is out of the normal range, the corresponding amplifier It can be judged that a failure has occurred.

The matrix control module 640 controls switches included in each of the power matrix 200 and the audio matrix 400. The matrix control module 640 controls each switch included in the power matrix 200 to supply power to the amplifier, and controls each switch included in the audio matrix 400 to connect the amplifier and the output device to Set up a multi-channel broadcasting environment.

In addition, when the monitoring module 630 detects that a specific amplifier has failed, the matrix control module 640 turns off all the switches connected to the amplifier, and the spare amplifier 340 broadcasts channels instead of the failed amplifier. By changing the audio path to take charge, the audio signal is amplified and transmitted through the preliminary amplifier 340.

The matrix control module 640 controls a switch included in the power matrix 200 to form a power path between the power supply and the amplifier, and allows power to be supplied to the amplifier through the formed power path. The matrix control module 640 may supply power of one or more power supplies to the amplifier by controlling the switch of the power matrix 200 so that power having a capacity equal to or greater than the output capacity of the amplifier is supplied.

If one power supply can accommodate the output capacity of a single amplifier, the matrix control module 640 is in a situation in which all of the amplifiers are operated (that is, when all are broadcast in each broadcast channel), for each power supply The power path may be formed by controlling a switch of the power matrix 200 so that power is supplied to one amplifier. In addition, the matrix control module 640 is configured such that load sharing of the power supply is performed, so that all power supplies 110, 120, and 130 share power with an operational amplifier to supply power, so that the power matrix 200 ) Switch.

On the other hand, the matrix control module 640, when a failure occurs in a specific power supply, turn off all the switches connected to this power supply, and control the switch of the power matrix 200 so that the power of another power supply is supplied to the amplifier, The amplifier can be controlled to supply power normally.

The output control module 650 is activated when any one of the power supplies fails, and compares the total supply capacity of the currently operating power supply with the total output capacity of the currently operating amplifier, and outputs the amplifier according to the comparison result. Decide whether to reduce The output adjustment module 650 may calculate the total supply capacity by checking the supply capacity of each power supply in normal operation in the storage module 610 and summing the supply capacity. In addition, the output adjustment module 650 may calculate the total output capacity by checking the output capacity of each amplifier operating in the storage module 610 and adding the output capacity.

If the total supply capacity of the power supply that is normally operating is greater than or equal to the total output capacity of the currently operating amplifier, the output adjustment module 650 does not perform separate amplifier control and outputs audio from the amplifier according to the existing output capacity. . On the other hand, if the total supply capacity of the power supply that is normally operating is less than the total output capacity of the currently operating amplifier, the output adjustment module 650 determines the output amount to be reduced by using Equation 1 below, and the output amount is The output of the amplifier is controlled so that the output of the amplifier decreases. At this time, the output adjustment module 650 lowers the audio gain, volume, and the like output to the amplifier, thereby reducing the output of the amplifier so that the total output capacity of each output amplifier is substantially equal to or less than the total supply capacity. do.

d (%): Total output capacity to decrease

a: Total output capacity

b: Total supply capacity

If a specific power supply fails and the output capacity output from the amplifier is larger than the power supplied to the amplifier, an overcurrent occurs in the amplifier, and a shutdown may occur in the amplifier where the overcurrent occurs. In order to prevent the amplifier shutdown due to such a power failure in advance, the output control module 650 is an amplifier that is operated so that the output of the amplifier is lowered if the total supply capacity of the active power supply is less than the total output capacity of the currently operating amplifier. Controls the output.

5 to 7, the power matrix state in a normal operation state and a failure state will be described, and the operation of the control device accordingly will be described.

FIG. 5 is a diagram illustrating a switch state of a power matrix when a plurality of amplifiers are operating according to an embodiment of the present invention.

Referring to Figure 5, in the state that all the power supply (110, 120, 130) and all the amplifiers (310, 320, 330) in normal operation, the operation of all the amplifiers (310 ~ 330) except the spare amplifier (340) If required and the power supply can cover the output capacity of one amplifier by itself, the matrix control module 640 forms a one-to-one power line between the power supplies 110, 120, 130 and the amplifiers 310, 320, 330 The switch of the power source matrix 200 can be controlled as shown in FIG. 5. That is, the matrix control module 640 may turn on switches 1 (23-1), switches 6 (23-6), and switches 11 (23-11). According to the switch state, the first power supply 110 supplies power to the first amplifier 310, the second power supply 120 supplies power to the second amplifier 320, and the third power supply The 130 supplies power to the third amplifier 330. That is, each power supply 110, 120, and 130 supplies power only to a designated amplifier.

Meanwhile, when all of the amplifiers are not operated and only some of the amplifiers are operated, a power path may be formed to be load sharing.

FIG. 6 is a diagram illustrating a switch state of a power matrix when some amplifiers are operating according to another embodiment of the present invention.

Referring to FIG. 6, when all of the power supplies 110, 120, and 130 and all the amplifiers 310, 320, and 330 operate normally, when only the first amplifier 310 is operated, the matrix control module 640 ) Can control the switches of the power matrix 200 as shown in FIG. 6 so that the power of all the power supplies 110, 120, 130 is supplied to the first amplifier 310. That is, the matrix control module 640 may turn on switches 1 (23-1), switches 5 (23-5), and switches 9 (23-9). Depending on the state of the switch, all of the first power supply 110, the second power supply 120, and the third power supply 130 supply power to the first amplifier 310, thereby operating only a specific power supply Is not, the load is shared by all power supplies 110, 120, 130, and as a result, the lifespan of the power supplies 110, 120, 130 is improved.

If, as shown in FIG. 5, while three channels of broadcasting (that is, broadcasting using three amplifiers) are being performed, broadcasting on two channels and three channels (that is, broadcasting using the second and third amplifiers) is stopped. The power supply matrix of the matrix control module 640 may be changed from the switch state of FIG. 5 to the switch state of FIG. 6.

As described above, the matrix control module 640 controls the switches of the power matrix 200 such that load sharing is performed between the power supplies by supplying power to all of the power supplies 110, 120, and 130. can do. That is, even though some power supplies may cover the output capacity of the operating amplifier, the matrix control module 640 may provide a power matrix 200 as shown in FIG. 6 so that all power supplies share and supply power to the operating amplifier. Switch can be controlled.

Meanwhile, when a failure occurs in a specific power supply, the control device 600 may change the power path so that power is supplied to the amplifier through a normally operating power supply.

7 is a diagram illustrating a switch state of a power matrix when a failure occurs in a power supply according to an embodiment of the present invention.

Referring to FIG. 7, the monitoring module 630 collects state information of each power supply measured by the power sensor and analyzes the collected state information for each power supply to determine whether a failure occurs in each power supply. In FIG. 7, it is assumed that a failure occurs in the first power supply 110 and all three amplifiers 310, 320, and 330 are operating as shown in FIG. 5 before the failure occurs.

When the matrix control module 640 detects that a failure has occurred in the first power supply 110, all switches connected to the first power supply 110 (ie, 23-1, 23-2, 23-3, 23-4) ) Is turned off, and a power supply for supplying power to the first amplifier 310 instead of the failed first power supply 110 is determined as the second power supply 120 and the third power supply 130. . In addition, the matrix control module 640 turns on the switches 5 (23-5) and the switches 9 (23-9), so that the power of the second power supply 120 and the third power supply 130 is the first amplifier 310 ).

On the other hand, in the switch state as shown in FIG. 6, when a failure occurs in the first power supply 110, the matrix control module 640 turns off the switch 1 (32-1), excluding the first power supply 110 It is controlled to supply power to the first amplifier through the second power supply 120 and the third power supply 130.

When a failure occurs in the first power supply 110, the output control module 650 is activated. The output control module 650 compares the total output capacity of the second power supply 120 and the third power supply 130 currently operating normally with the total output capacity of the currently operating amplifier, and then the second power supply ( If the total supply capacity of the 120 and the third power supply 130 is less than the total output capacity of the current operating amplifier, the output amount to be reduced is determined by using Equation 1, and the output power of the output amount is reduced. Control the output of (310, 320, 330).

Meanwhile, when a specific amplifier fails, the matrix control module 640 may control switches of the power matrix 200 and the audio matrix 400 to transmit audio to a designated output device without interrupting a broadcast channel.

With reference to FIGS. 5 and 8 to 10, a description will be given of a method of controlling a power supply matrix and an audio matrix in response to an amplifier failure in the control device 600.

8 is a diagram illustrating a switch state of an audio matrix when a plurality of amplifiers are operating according to an embodiment of the present invention.

FIG. 9 is a diagram illustrating a switch state of a power matrix when a failure occurs in an amplifier according to an embodiment of the present invention.

10 is a diagram illustrating a state of a switch in an audio matrix when a failure occurs in an amplifier according to an embodiment of the present invention.

Meanwhile, it is assumed that the switch state of the power matrix is as shown in FIG. 5 and the switch state of the audio matrix 400 is as shown in FIG. 8 before an amplifier failure occurs.

Referring back to FIG. 5, the first power supply 110 supplies power to the first amplifier 310 according to the power matrix state, and the second power supply 120 supplies power to the second amplifier 320. , The third power supply 130 supplies power to the third amplifier 330.

In addition, referring to FIG. 8, audio amplified by the first amplifier 310 is transmitted to the first output device 510, and audio amplified by the second amplifier 320 is transmitted to the second output device 520. The audio amplified by the third amplifier 330 is transmitted to the third output device 530.

In this matrix state, the monitoring module 630 collects state information of each amplifier measured by the amplifier sensor and analyzes the state information to monitor whether the amplifier has failed.

Referring to FIG. 9, in FIG. 9, it is assumed that a failure occurs in the first amplifier 310 and all three amplifiers are operating in a switch state as illustrated in FIG. 5 before a failure occurs.

When the matrix control module 640 detects that a failure has occurred in the first amplifier 310, it turns off all switches 23-1, 23-5, and 23-9 connected to the first amplifier 310, and switches 4 Turn on (23-4) to control the first power supply 110 to supply power to the spare amplifier 340. That is, as a failure occurs in the first amplifier 310, the power of the first power supply 110 supplied to the first amplifier 310 is supplied to the spare amplifier 340 by controlling the switch of the power matrix 200. do.

On the other hand, in the switch state as shown in FIG. 6, when a failure occurs in the first amplifier 310, the matrix control module 640 includes switches 1 (23-1), switches 5 (23-5), and switches 9 (23-9). ) Is turned off, and the switch 4 (23-4), the switch 8 (23-8) and the switch 12 (23-12) are turned on, so that the first power supply 110, the second power supply 120, and 3, so that the power of the power supply 130 is provided as a spare amplifier.

In addition, the matrix control module 640 controls the switch of the audio matrix 400 so that audio is transmitted to the designated output device through the preliminary amplifier 340 instead of the failed first amplifier 310. That is, as shown in FIG. 10, the matrix control module 640 includes switches 33-1 and 33-2 connected to the first amplifier 310 that has failed among a plurality of switches included in the audio matrix 400. , 33-3) are turned off, and the switch 10 (33-10) is turned on to amplify the audio through the preliminary amplifier 340 instead of the first amplifier to be transmitted to the first output device 510.

11 is a flowchart illustrating a method of controlling a power matrix by monitoring a failure of a power supply in an premises broadcasting system according to an embodiment of the present invention.

Referring to FIG. 11, the monitoring module 630 collects the status information of each power supply measured by the power sensor and stores it in the storage module 610, and analyzes the status information to monitor whether the power supply is faulty ( S1101). At this time, the monitoring module 630 checks the current included in the status information of the power supply, checks whether the current is within the normal current range, and if the current is out of the normal range, it may be determined that the power supply has failed. . In addition, the monitoring module 630 checks the voltage included in the status information of the power supply, checks whether the voltage is within the normal voltage range, and if the voltage is out of the normal range, it may be determined that a failure occurs in the power supply. . In addition, the monitoring module 630 checks the temperature included in the status information of the power supply, and checks whether the temperature has exceeded the threshold temperature, and if it exceeds the threshold temperature, may determine that the power supply has failed.

When the monitoring module 630 detects a failure for a specific power supply, the matrix control module 640 turns off all switches connected to the power supply to block abnormal power from being supplied to the amplifier (S1105). Subsequently, the matrix control module 640 controls the switch of the power matrix 200 so that power is supplied to the amplifier through another power supply that normally operates instead of the failed power supply, so that power is normally supplied to the corresponding amplifier. (S1107).

Meanwhile, when the monitoring module 630 detects a failure of the power supply, the output control module 650 is activated. Subsequently, the output adjustment module 650 checks each of the total supply capacity of the normally operating power supply and the total output capacity of the currently operating amplifier (S1109). The output adjustment module 650 may calculate the total supply capacity by checking the supply capacity of each power supply in normal operation in the storage module 610 and summing the supply capacity. In addition, the output adjustment module 650 may calculate the total output capacity by checking the output capacity of each operational amplifier in the storage module 610 and adding the output capacity.

Subsequently, the output adjustment module 650 compares the total output capacity of the currently operating amplifiers with the total supply capacity of the normally operating power supplies (S1111), and the total supply capacity of the normally operating power supply is the total of the currently operating amplifiers. If it is more than the output capacity, no separate amplifier control is performed, and the audio is output from the amplifier according to the existing output capacity.

On the other hand, if the total supply capacity of the power supply that is normally operating is less than the total output capacity of the currently operating amplifier, the output adjustment module 650 determines the output amount to be reduced by using Equation 1, and the output of this output amount is The output of the amplifier is controlled to decrease, and as a result, the total output capacity of each amplifier substantially output is controlled to be equal to or less than the total supply capacity. At this time, the output adjustment module 650 may decrease the output of the amplifiers 310 to 340 by lowering the audio gain and volume output to the amplifier.

For example, a failure occurs in the first power supply 110, the second power supply 120 operating normally has a supply capacity of 40W, the third power supply 130 has a supply capacity of 40W, and Assume that the first amplifier 310 in operation has an output capacity of 30W, the second amplifier 320 in operation has an output capacity of 30W, and the third amplifier 330 in operation has an output capacity of 30W. In this case, the total supply capacity is 80W, the total output capacity is 90W, and substituting these 80W and 90W into Equation 1, 11% is calculated, and the output adjustment module 650 is configured for each amplifier 310, 320, The output capacity of each amplifier 310, 320, 330 is reduced so that the output capacity of each amplifier is reduced from 30W to 26.7W so that the output capacity of 330) is reduced by 11%.

On the other hand, when a failure occurs in the power supply or the amplifier, the control device 600 outputs an amplifier or power supply failure message to the screen or reports it to the administrator, thereby inducing the administrator to quickly fail over.

As described above, in the premises broadcasting system according to the present invention, the power matrix 200 is implemented to form a power path between the power supply unit 100 and the multi-channel amplifier unit 300, and when a specific power supply fails Through the control of the switch of the power matrix 200, power generated from a normal power supply is supplied to the amplifier, thereby actively coping with power failure. In addition, the on-premises broadcasting system according to the present invention is provided with a spare amplifier 340, even if a failure occurs in a specific amplifier, through the switch control of the audio matrix 400, the spare amplifier 340 outputs the failed amplifier By replacing it, there is an advantage of being able to actively cope with amplifier failure.

In addition, the on-premises broadcasting system according to the present invention has the advantage of improving the life of the amplifier and stabilizing the entire broadcasting system by adjusting the output of the amplifier by detecting the overcurrent of the amplifier that may occur due to power failure. have.

While this specification includes many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in individual embodiments herein may be implemented in combination in a single embodiment. Conversely, various features that are described in this specification in a single embodiment may be implemented in various embodiments individually or in combination as appropriate.

Although the operations in the drawings have been described in a specific order, it should not be understood that such operations are performed in a specific order as shown, or a series of sequences, or all described actions are performed to obtain a desired result. .

The present invention described above, since it is possible for a person of ordinary skill in the art to which the present invention pertains, various substitutions, modifications, and changes are possible within the scope of the technical spirit of the present invention, and the above-described embodiments and attached It is not limited by the drawings.

100: power supply 110, 120, 130, 140: power supply
200: power supply matrix 300: multi-channel amplifier unit
310, 320, 330: amplifier 340: spare amplifier
400: audio matrix 510, 520, 530: output device
600: control unit 610: storage module
620: communication module 630: monitoring module
640: matrix control module 650: output control module

Claims (8)

A power supply unit including a plurality of power supplies;
A multi-channel amplifier that includes a plurality of amplifiers, which opens a broadcasting channel through each amplifier and amplifies and transmits audio;
A plurality of power input lines and a plurality of power output lines are formed, the power input lines are connected to a power supply, the power output lines are connected to an amplifier, and the power input lines and the power output lines are disposed at a crossing point. Power matrix including a switch of the; And
The power matrix is formed by controlling a switch included in a power matrix to provide power to an amplifier to operate one or more amplifiers, acquire and analyze the state of each power supply, and when a failure is detected in a specific power supply, the power matrix Includes a control device characterized in that it controls the switch of the power matrix to turn off the switch connected to the faulty power supply among the switches of the power supply and a power supply that operates normally to supply power to the amplifier.
The control device,
When a failure occurs in the power supply, the total supply capacity of a plurality of power supplies that are operating normally and the total output capacity of a plurality of operating amplifiers are checked based on the power supply capacity and output capacity of each amplifier, which are already being stored. When the supply capacity is less than the total output capacity, the premises broadcasting system is characterized in that the output of each amplifier is reduced so that the total output capacity of each amplifier substantially output is equal to or less than the total supply capacity. delete According to claim 1,
The control device,
An on-premises broadcasting system, characterized in that the output of the amplifier is reduced by reducing the gain or volume of each amplifier. According to claim 1,
The control device,
A premises broadcasting system characterized by determining that a failure has occurred in the power supply by analyzing the state information of the power supply, and when the voltage or current of the power supply is out of a normal range or the temperature of the power supply exceeds a threshold temperature. According to claim 1,
The control device,
An on-premises broadcasting system, characterized in that a switch of the power matrix is controlled so that all of the normally operated power supplies share and supply power to each operational amplifier. According to any one of claims 1, 3, 4, 5,
An audio matrix forming a plurality of audio input lines and a plurality of audio output lines, the audio input lines being connected to an amplifier, and including a plurality of switches arranged at a point where the audio input lines and the audio output lines intersect; Including more,
The control device controls the switch included in the audio matrix to form an audio path. The method of claim 6,
The multi-channel amplifier includes a spare amplifier,
The control device acquires and analyzes the state of each amplifier, and when a failure is detected in a specific amplifier, the switch connected to the failed amplifier among the switches of the audio matrix is turned off and audio is transmitted through a spare amplifier instead of the failed amplifier. And controlling the switch of the audio matrix to be transmitted, and controlling the switch of the power matrix so that power to the faulty amplifier is cut off and power is supplied to the spare amplifier. The method of claim 7,
The control device,
An on-premises broadcasting system characterized by determining that a failure has occurred in the amplifier when the difference between the audio input signal level and the audio output signal level exceeds a threshold difference by analyzing the state information of the amplifier.

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