KR102368094B1 - Status monitoring system and status monitoring method using speaker line of broadcast sound equipment - Google Patents

Abstract

Disclosed is a state monitoring system using speaker lines of broadcast sound equipment. According to the present invention, the state monitoring system using speaker lines of broadcast sound equipment comprises: a control device that converts a control command into a first communication signal and transmits a test signal in which a power signal and the first communication signal are mixed through speaker lines for connecting an amplifier with a speaker; and a monitoring device that receives the test signal transmitted through the speaker lines, converts the power signal to generate driving power, operates based on the driving power to obtain response information corresponding to the control command, and converts the response information into a second communication signal to transmit the second communication signal to the control device through the speaker lines.

Description

Status monitoring system and status monitoring method using speaker lines of broadcast sound equipment

The present invention relates to a condition monitoring system and a condition monitoring method using a speaker line of a broadcast sound equipment, which can monitor whether a line is disconnected/shorted and the state of a speaker using a previously installed speaker line.

When a broadcasting system is installed in a large space such as a park, amusement park, or a zoo, the distance between the broadcasting room where the broadcasting equipment is installed and the place where the speaker is installed is long. Therefore, the personnel in the broadcasting room cannot hear the sound being broadcast.

For this reason, even when a broadcast is not transmitted normally due to a defective speaker line or a broadcast is not normally broadcast due to a defective speaker, the problematic line or speaker is not immediately identified and the defective state is left as it is. occurs frequently.

Currently, very limited and passive maintenance is performed, such as when there is a civil complaint from a person passing by the speaker, or when a problem is discovered by chance when the manager visits the site.

In such a situation, various announcements may not be properly delivered to people, and in the event of an accident such as a fire or earthquake, there is a high possibility that secondary damage may occur because prompt broadcasting for evacuation is not performed.

The present invention is to solve the above problems, and an object of the present invention is a condition monitoring system using a speaker line of a broadcasting sound facility that can monitor whether the line is disconnected/shorted and the state of the speaker using a pre-installed speaker line and to provide a state monitoring method.

A state monitoring system using a speaker line of a broadcast sound equipment according to the present invention converts a control command into a first communication signal, and a power signal and the first communication signal are mixed through a speaker line connecting an amplifier and a first speaker a control device that transmits the checked test signal, and receives the test signal transmitted through the speaker line, converts the power signal to generate driving power, and operates based on the driving power to correspond to the control command and a first monitoring device that acquires response information, converts the response information into a second communication signal, and transmits the response information to the control device through the speaker line.

In this case, the control device may be disposed at a rear end of the amplifier, and the first monitoring device may be disposed at a front end of the first speaker.

In this case, the control device cuts off the connection between the first speaker line between the amplifier and the control device and the second speaker line between the control device and the first monitoring device, and sends the power signal to the second speaker line output to, measure the magnitude of the current flowing through the second speaker line, determine whether the second speaker line is short-circuited based on the measured current size, and determine that the second speaker line is in a normal state When the power signal and the first communication signal are mixed, the test signal may be transmitted to the first monitoring device.

Meanwhile, the control command may be a speaker inspection command, and the response information may be an inspection result of the first speaker connected to the first monitoring device.

Meanwhile, the first monitoring device includes a branch line through which the speaker signal output from the amplifier and the test signal output from the control device are branched, wherein the branch line converts the power signal to generate driving power It may be connected to a converter.

In this case, the first monitoring device may include a filter disposed on the branch line and passing the test signal to the power conversion unit.

Meanwhile, when the driving power is generated by the power conversion unit converting the power signal received through the branch line, the first monitoring device operates based on the driving power between the control device and the first monitoring device. connection of the second speaker line and the third speaker line between the first monitoring device and the first speaker may be cut off.

In this case, the first monitoring device generates a first speaker test signal that is a DC signal based on the driving power and outputs it to the first speaker, detects the current flowing through the primary side of the transformer in the first speaker, and Determines whether the primary side of the transformer is disconnected, generates a second speaker test signal that is an AC signal based on the driving power and outputs it to the first speaker, and uses the impedance value measured at the primary side of the transformer It is possible to determine whether the secondary side of the transformer is disconnected.

Meanwhile, the control device may determine whether the speaker line is disconnected based on whether the second communication signal is received.

Meanwhile, including a first speaker, a plurality of speakers connected to the amplifier and the speaker line through the speaker line, and the first monitoring device, receiving the test signal transmitted through the speaker line, and the control command A plurality of monitoring devices for acquiring the response information corresponding to , converting the response information into the second communication signal and transmitting the response information to the control device through the speaker line, wherein the speaker line includes 'the control It may include a main speaker line connected to the device and a plurality of sub speaker lines connected to the main speaker line and the plurality of monitoring devices.

In this case, the control device may determine that a sub-speaker line connected to a monitoring device to which the second communication signal is not received among the plurality of sub-speaker lines is disconnected.

Meanwhile, the control device transmits a speaker inspection command to the plurality of monitoring devices so that the plurality of monitoring devices obtain inspection results for the plurality of speakers, and designates the first monitoring device among the plurality of monitoring devices transmits a report command to the plurality of monitoring devices to receive the inspection result of the first monitoring device from the first monitoring device, and sends a report command for designating a second monitoring device among the plurality of detection devices to the plurality of monitoring devices The inspection result of the second monitoring device may be received from the second monitoring device by transmitting to the device.

Meanwhile, a monitoring command is transmitted to the control device based on the operation policy, and as a result of checking the plurality of speakers from the control device, at least one of information on a plurality of short-circuited sub-speaker lines and information on disconnected sub-speaker lines It may further include an operating device for receiving and displaying one.

On the other hand, the state monitoring method according to the present invention includes the steps of transmitting a monitoring command based on an operation policy, the control device converts the control command into a first communication signal based on the monitoring command, and connects the amplifier and a plurality of speakers transmitting the first communication signal through a speaker line, the plurality of monitoring devices receiving the first communication signal transmitted through the speaker line, obtaining response information corresponding to the control command, and converting the response information into a second communication signal and transmitting it to the control device through the speaker line, and displaying the inspection results for the plurality of speakers, obtained based on the second communication signal do.

In this case, the method may further include receiving an input for at least one of a monitoring time, a monitoring period, a monitoring target speaker group, and a monitoring target speaker line.

In this case, a power signal is output to the main speaker line connected to the control device, the magnitude of the current flowing through the main speaker line is measured, and based on the measured current, 'to the main speaker line and the plurality of monitoring devices' The method may further include determining whether a plurality of connected sub-speaker lines are short-circuited, and displaying information on the plurality of short-circuited sub-speaker lines.

Meanwhile, in the step of transmitting the first communication signal, the first communication signal includes 'a main speaker line connected to the control device' and 'the main speaker line and a plurality of sub speaker lines connected to the plurality of monitoring devices' and transmitting to the plurality of monitoring devices through The method may further include displaying information on the disconnected sub-speaker line.

Meanwhile, the step of obtaining the response information corresponding to the control command by the plurality of monitoring devices includes generating a first speaker test signal that is a DC signal and outputting it to a connected speaker, and a current flowing through the primary side of the transformer in the connected speaker determining whether the primary side of the transformer is disconnected by detecting It may include determining whether the secondary side of the transformer is disconnected.

According to the present invention, even if the speakers are distributed in a wide space, there is an advantage that monitoring is possible with only a small number of operating personnel because it remotely monitors which speaker has a failure or which speaker line has a failure.

In the existing broadcasting system, a speaker line connecting an amplifier and a speaker has already been established. And, since the present invention uses the existing speaker line as it is, it is possible to operate only by mounting the control device and the monitoring device on the existing speaker line without the need to install a separate line. Therefore, there is an advantage in that cost and effort can be reduced.

According to the present invention, even if a plurality of speakers are installed on one pole, there is an advantage in that it is possible to accurately determine which speaker among the plurality of speakers has a failure.

According to the present invention, the speaker is not connected to a separate external power source. In such a situation, if an external power source needs to be connected to the monitoring device installed at the front end of the speaker, there is a problem in that a separate line for installing the external power source is required. However, in the present invention, since the monitoring device operates with the power supplied from the control device, there is an advantage in that this problem can be solved.

1 is a diagram illustrating a broadcasting system installed in a park.
2 is a view for explaining a condition monitoring system using a speaker line of a broadcast sound equipment according to the present invention.
3 is a block diagram illustrating detailed components of the control device 100 and the monitoring device 200 .
4 is a diagram for explaining an operation when a plurality of amplifiers and monitoring devices are present.
5 is a diagram illustrating an operation device 700 in which operation software is installed.
6 is a flowchart illustrating a state monitoring method according to the present invention.
7 is a view for explaining a method of checking a primary side state of a trance of a speaker according to the present invention.
8 is a view for explaining a method of checking a secondary side state of a trance of a speaker according to the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In implementing the present invention, components may be subdivided for convenience of description, but these components may be implemented in one device or module, or one component may be divided into a plurality of devices or modules. It can also be implemented in

1 is a diagram illustrating a broadcasting system installed in a park.

The park has one central broadcasting room and a number of regional broadcasting rooms.

The central broadcasting room may be connected to a local broadcasting room, and main broadcasting equipment may be installed in the central broadcasting room. When broadcasting is performed in the central broadcasting room, the main broadcasting equipment in the central broadcasting room may receive an audio signal, and the audio signal output from the central broadcasting room may be transmitted to local broadcasting equipment installed in a plurality of regional broadcasting rooms. In this case, the audio signal may be amplified by an amplifier in the local broadcasting equipment and transmitted as a speaker signal to a plurality of speakers installed in the park.

In addition, direct broadcasting can be performed in a local broadcasting room. In this case, the audio signal input to the local broadcasting equipment is amplified by an amplifier in the local broadcasting equipment, and can be transmitted as a speaker signal to a plurality of speakers connected to the local broadcasting equipment.

Also, an amplifier may be installed in the central broadcasting room, and the amplifier installed in the central broadcasting room may be connected to a speaker. In this case, the audio signal input to the main broadcasting equipment may be amplified by an amplifier in the main broadcasting equipment and transmitted as a speaker signal to a speaker connected to the central main broadcasting equipment.

The amplifier to be described below may be installed in a central broadcasting room or a local broadcasting room, or may be installed in other places.

On the other hand, since the park occupies a very large area, the number of speakers connected to one central broadcasting room and multiple regional broadcasting rooms can reach hundreds and are distributed over a large area, and the length of the speaker line may exceed 1 km in length. .

In such an environment, there is a problem in that the manager must directly visit the speaker installation area in order to check the speaker defect or the line defect.

Also, a plurality of speakers may be installed on one pole. In this case, even if the manager visits the speaker installation area, it is difficult to determine which speaker does not produce sound, so there is a problem in that it is not possible to determine which speaker is defective among a plurality of speakers installed on one pole.

2 is a view for explaining a condition monitoring system using a speaker line of a broadcast sound equipment according to the present invention.

The state monitoring system 10 using a speaker line of a broadcast sound facility may include a control device 100 , a monitoring device 200 , an amplifier 300 , a speaker 400 , and an audio controller 500 .

Meanwhile, as shown in FIG. 2 , the devices constituting the condition monitoring system 10 using a speaker line of a broadcast sound facility are not all essential, and thus some devices may be omitted.

The audio controller 500 may receive an audio signal from the outside.

In more detail, the audio controller 500 may include a microphone, receive sound generated from an external audio source (eg, an administrator), and convert it into an audio signal.

Also, the audio controller 500 may receive an audio signal by communicating with the main broadcasting equipment or other equipment.

Also, the audio controller 500 may transmit an audio signal to the amplifier 300 connected to the audio controller 500 .

The amplifier 300 may receive an audio signal from the audio controller 500 . Also, the amplifier 300 may be connected to the speaker 400 through the speaker line 210 .

In addition, the amplifier 300 may transmit a speaker signal generated by amplifying the audio signal to the speaker 400 .

The speaker 400 may receive a speaker signal transmitted through the speaker line 210 . In addition, the speaker 400 may convert the received speaker signal into sound and output it.

Meanwhile, the speaker 400 may not be connected to a separate power supply. In this case, the speaker 400 may output sound using electrical energy transmitted as a speaker signal.

Meanwhile, the control device 100 may be disposed at the rear end of the amplifier 300 . Also, the monitoring device 200 may be disposed at the front end of the speaker 400 .

Here, “front” and “rear” may be defined based on the order in which speaker signals are transmitted from the amplifier 300 to the speaker 400 .

Specifically, since the speaker signal is transmitted in the order of the amplifier 300, the control device 100, the monitoring device 200, and the speaker 400, the control device 100 is located at the rear end of the amplifier 300, the monitoring device ( 200 may be defined as being disposed at the front end of the speaker 400 .

On the other hand, the control device 100 inspects a defect in the speaker line disposed between the control device 100 and the monitoring device 200 . Therefore, the control device 100 should be disposed close to the amplifier 300 and the monitoring device 200 should be disposed close to the speaker 400 , so that the scope of the inspection can be widened.

Accordingly, the control device 100 may be disposed in a local broadcasting room together with the amplifier 300 . Also, the monitoring device 200 may be disposed on a pole together with the speaker 400 .

Meanwhile, the control device 100 may bypass the speaker signal transmitted by the amplifier 300 and transmit it to the speaker 400 . In addition, the monitoring device 200 may also bypass the speaker signal transmitted by the amplifier 300 and transmit it to the speaker 400 .

Meanwhile, the speaker line 210 includes a first speaker line 211 between the amplifier 300 and the control device 100 , a second speaker line 212 between the control device 100 and the monitoring device 200 , and a monitoring device. and a third speaker line 213 between the speaker 200 and the speaker 400 .

Meanwhile, a communication signal generated by the control device 100 and transmitted to the monitoring device 200 is converted into a first communication signal, and a communication signal generated from the monitoring device 200 and transmitted to the control device 100 is converted to a second communication signal. name it

3 is a block diagram illustrating detailed components of the control device 100 and the monitoring device 200 .

The operation of the present invention will be described with reference to FIGS. 2 and 3 together.

The control device 100 may include an operation communication unit 110 , a display unit 120 , a control unit 130 , a power supply unit 140 , a line communication unit 150 , a line inspection unit 160 , and a line selection unit 170 . there is.

The operation communication unit 110 may support wired or wireless communication between the control device 100 and an external device.

Specifically, the operation communication unit 110 may provide an interface for connecting the control device 100 to a wired/wireless network. In addition, the operation communication unit 110 may transmit/receive data with an operation device to be described later through the connected network or another network linked to the connected network.

The display unit 120 may generate an output related to time. In this case, the display unit 120 displays information processed by the control device 100 , for example, information on an execution screen of an application program driven in the mobile terminal 100 or a UI (User Interface) or GUI (Graphic) according to the information on the execution screen. User Interface) information can be displayed.

The controller 130 may control the overall operation of the control device 100 . Accordingly, operations performed by other components in the control device 100 may be performed under the control of the controller 130 .

Also, when a monitoring command is received from the operating device or a user monitoring command is received through the input unit of the control device 100 , the control unit 130 may change the operation mode of the control device 100 from the normal mode to the speaker check mode.

And when the speaker check mode is changed, the controller 130 may check the speaker line disconnection, the speaker line short circuit, and the speaker state.

The power supply unit 140 may supply operating power for the operation of the control device 100 . In this case, the power supply unit 140 may be connected to an external power source to receive AC power from the outside.

Also, in the speaker check mode, the power supply 140 may generate a power signal. In addition, the power signal generated by the power supply unit 140 may be transmitted to the monitoring device 200 and used to drive the monitoring device 200 .

The power signal generated by the power supply unit 140 may be an AC power signal.

In the speaker check mode, the line communication unit 150 may perform two-way communication with the monitoring device 200 through a speaker line (specifically, the second speaker line 212 ).

In more detail, the line communication unit 150 may generate a first communication signal converted from a control command and transmit it to the monitoring device 200 .

Also, the line communication unit 150 may receive a second communication signal from the monitoring device 200 . In this case, the received second communication signal may be converted into response information.

In the speaker check mode, the line inspection unit 160 may measure the current of the speaker line 210 . In more detail, the line inspection unit 160 may include a current sensor, detect a current of the second speaker line 212 , and transmit a signal corresponding to the sensed value to the control unit 130 . In this case, the control unit 130 may acquire information on the current value of the second speaker line 212 based on the signal received from the line inspection unit 160 .

The line selection unit 170 includes one or more switching means, and one or more switching means included in the line communication unit 150 may be turned on/off under the control of the controller 130 .

Here, various devices or elements for blocking or unblocking an electrical connection, such as a switch, a relay, etc., may be used as the switching means.

In addition, the line selection unit 170 connects the first speaker line 211 and the second speaker line 212 or selects the connection between the first speaker line 211 and the second speaker line 212 according to the operation mode. can be blocked

Specifically, in the normal mode, the line selector 170 may connect the first speaker line 211 through which the speaker signal is received from the amplifier 300 and the second speaker line 212 . In this case, the amplifier 300 and the monitoring device 200 are electrically connected through the speaker line 210 , and the speaker signal output from the amplifier 300 is bypassed in the control device 100 to the monitoring device 200 . can be transmitted.

Also, in the speaker check mode, the line selection unit 170 may cut off the connection between the first speaker line 211 and the second speaker line 212 through which the speaker signal is received from the amplifier 300 . In this case, the electrical connection between the amplifier 300 and the speaker line 210 of the monitoring device 200 is cut off, and the speaker signal output from the amplifier 300 is not transmitted to the monitoring device 200 .

Also, in the speaker check mode, the line selector 170 may connect the second speaker line 212 and at least one component inside the control device 100 .

In this case, at least one component inside the control device 100 is electrically connected to the monitoring device 200 through the second speaker line 212, and the power signal or communication signal output from the control device 100 is 2 may be transmitted to the monitoring device 200 through the speaker line 212 . Here, at least one component inside the control device 100 may include a power supply unit 140 , a line communication unit 150 , and a line inspection unit 160 .

Also, in the normal mode, the line selection unit 170 may block the connection between the speaker line 210 and at least one component inside the control device 100 . Accordingly, the speaker signal output from the amplifier 300 may not be transmitted to at least one component inside the control device 100 .

Next, the monitoring device 200 will be described.

The monitoring apparatus 200 may include a line communication unit 210 , a power conversion unit 220 , a control unit 230 , a speaker inspection unit 240 , and a line selection unit 250 .

In the speaker check mode, the line communication unit 210 may perform two-way communication with the control device 100 through a speaker line (specifically, the second speaker line 212 ).

In more detail, the line communication unit 210 may generate a second communication signal converted from response information and transmit it to the control device 100 .

Also, the line communication unit 150 may receive a first communication signal from the control device 100 . In this case, the received first communication signal may be converted into a control command.

The controller 230 may control the overall operation of the monitoring device 200 . Accordingly, operations performed by other components in the monitoring device 200 may be performed under the control of the controller 230 .

Also, when driving power obtained by converting a power signal is supplied from the power conversion unit 200 , the control unit 230 may start an operation. In this case, the controller 230 may control the speaker inspection unit 270 to generate a speaker inspection signal and transmit it to the speaker. Also, when the state information of the speaker is obtained, the line communication unit 210 may be controlled to convert the state information of the speaker into a second communication signal and transmit it to the control device 100 .

The power converter 220 may convert a power signal to generate driving power.

In more detail, the power conversion unit 220 may extract a power signal from the test signal received from the control device 100 and convert the extracted power signal into driving power. In addition, the power conversion unit 200 may supply driving power to at least one component in the monitoring device 200 .

Meanwhile, the power conversion unit 200 includes an AC-DC converter and may convert a power signal that is an AC signal into driving power that is a DC signal.

The speaker test unit 240 may generate a speaker test signal and transmit it to the speaker 400 .

Also, the speaker inspection unit 240 may measure a current flowing through the speaker 400 or an impedance within the speaker 400 , and transmit a signal corresponding to the measured value to the control unit 230 . In this case, the control unit 230 may acquire status information of the speaker 400 based on the signal received from the speaker inspection unit 240 .

The line selection unit 250 includes one or more switching means, and one or more switching means included in the line communication unit 250 may be turned on/off under the control of the controller 230 .

Here, various devices or elements for blocking or unblocking an electrical connection, such as a switch, a relay, etc., may be used as the switching means.

In addition, the line selection unit 170 may connect the second speaker line 212 and the third speaker line 213 or cut off the connection between the second speaker line 212 and the third speaker line 213 .

Specifically, the switching element disposed between the second speaker line 212 and the third speaker line 213 may be a normally close element.

Also, while the test signal is not received from the control device 100 , the controller 230 does not operate. In this case, the second speaker line 212 and the third speaker line 213 may be connected to each other. Accordingly, the control device 100 and the speaker 400 are electrically connected, and the speaker signal transmitted from the control device 100 may be bypassed by the monitoring device 200 and transmitted to the speaker 400 .

In addition, when a test signal is received from the control device 100 , the controller 230 supplied with driving power may start an operation. And when the first communication signal is received from the control device 100, the control unit 230 cuts off the connection between the second speaker line 212 and the third speaker line 213, the second speaker line 212 and the third A switching element disposed between the speaker lines 213 may be controlled. In this case, the electrical connection through the speaker line 210 of the control device 100 and the speaker 400 is cut off, and the test signal transmitted from the control device 100 is not transmitted to the speaker 400 .

Meanwhile, the monitoring device 200 may include a branch line 261 through which the speaker signal output from the amplifier 300 and the test signal output from the control device 100 are branched.

In this case, the branch line 261 may be connected to the power conversion unit 220 and the line communication unit 210 that convert a power signal to generate driving power.

Specifically, one end of the branch line 261 is connected to the second speaker line 212 , one of the other ends of the branch line 261 is connected to the power conversion unit 220 , and the other end of the branch line 261 is connected to the other end of the branch line 261 . One may be connected to the line communication unit 210 .

Meanwhile, the monitoring device 200 does not receive power from an external power source. Therefore, the monitoring device 200 may receive power only by the power signal transmitted from the control device 100 .

Next, the operations of the control device 100 and the monitoring device 200 will be described in chronological order.

First, the operation in the normal mode will be described in chronological order.

When the control device 100 does not perform monitoring, the control device 100 may operate in a normal mode.

In this case, the line selector 170 may connect the first speaker line 211 through which the speaker signal is received from the amplifier 300 and the second speaker line 212 .

Specifically, the switching element between the first speaker line 211 and the second speaker line may be switched on.

In this case, the speaker signal output from the amplifier 300 may be bypassed in the control device 100 and transmitted to the monitoring device 200 .

Meanwhile, the speaker signal bypassed by the control device 100 may be transmitted to the monitoring device 200 through the second speaker line 212 .

Meanwhile, the speaker signal transmitted through the second speaker line 212 may be transmitted to the branch line 261 .

In addition, the monitoring device 200 may include a filter 270 disposed on the branch line 261 .

The filter 270 may pass a frequency component of the test signal and block other frequency components. Accordingly, all or most of the speaker signal transmitted through the second speaker line 212 may be blocked by the filter 270 , and may not be transmitted to the line communication unit 210 and the power conversion unit 220 .

Meanwhile, the speaker signal transmitted through the second speaker line 212 may be introduced into the line selection unit 250 . In addition, the line selection unit 250 may include a switching element disposed between the second speaker line 212 and the third speaker line 213 .

The switching element disposed between the second speaker line 212 and the third speaker line 213 may be a normally close element. Accordingly, the speaker signal transmitted from the control device 100 may be bypassed by the monitoring device 200 and transmitted to the speaker 400 .

In this case, the speaker 400 may convert the received speaker signal into sound and output it.

The following describes the operation in speaker check mode in chronological order.

When a monitoring command is received from the operating device through the operating communication unit 110 or a user monitoring command is received through the input unit of the control device 100 , the control unit 130 changes the operation mode of the control device 100 from the normal mode to the speaker check mode can be changed.

In this case, the control unit 130 may block the connection of the first speaker line 211 between the amplifier 300 and the control device 100 and the second speaker line between the control device 100 and the monitoring device 200 . there is.

In more detail, the line selection unit 170 may include a switching element disposed between the first speaker line 211 and the second speaker line 212 . In addition, the controller 130 may control the switching element disposed between the first speaker line 211 and the second speaker line 212 to be switched off.

In this case, the speaker signal output from the amplifier 300 may not be transmitted to the monitoring device 200 .

The control unit 130 may control the power supply unit 140 to output a power signal. Here, the power signal may be a signal for determining whether a speaker line (more specifically, the second speaker line 212) is short-circuited.

In this case, the power supply unit 140 may output a power signal to the second speaker line 212 .

In this case, the line inspection unit 160 may measure the magnitude of the current flowing through the second speaker line 212 and transmit a signal corresponding to the measured current to the controller 130 . In addition, the controller 130 may determine whether the second speaker line 212 is short-circuited by using the magnitude of the measured current.

Specifically, when the magnitude of the measured current is within the range of the normal state or is lower than a preset value, the controller 130 may determine that the second speaker line 212 is in a normal state in which the short circuit is not performed.

On the other hand, when the measured current is outside the range of the normal state or higher than a preset value, the controller 130 may determine that the second speaker line 212 is in a short-circuited state.

On the other hand, if it is determined that the second speaker line 212 is in a short-circuited state, the control unit 130 displays information indicating that the second speaker line 212 is short-circuited through the display unit of the control device 100 or the control device 100 It can be output as sound through the speaker of

Meanwhile, when it is determined that the second speaker line 212 is in a normal state, the controller 130 may communicate with the monitoring device 200 in a Power-Line Communications (PLC) method.

Specifically, when it is determined that the second speaker line 212 is in a normal state, the controller 130 may transmit a test signal in which the power signal and the first communication signal are mixed to the monitoring device 300 . The power signal is currently output from the power supply unit 140 , and the control unit 130 may additionally generate the first communication signal and mix it with the power signal.

Here, the power signal serves to transfer electrical energy from the control device 100 to the monitoring device 200 and may be an AC signal.

In addition, the first communication signal serves to transmit data to be communicated from the control device 100 to the monitoring device 200 , and may be a signal having a higher frequency than the power signal.

In addition, the control unit 130 may control the line communication unit 150 to generate the first communication signal. Accordingly, the power signal may be mixed with the first communication signal, and a test signal in which the power signal and the first communication signal are mixed may be output.

Meanwhile, the controller 130 may convert the control command into a first communication signal. Here, the control command may be a speaker check command.

On the other hand, the control unit 130 monitors the device 200 through the speaker line 210 (more specifically, the second speaker line 212) that connects the amplifier and the speaker to the test signal in which the power signal and the first communication signal are mixed. can be sent to

Meanwhile, the test signal may be transmitted to the branch line 261 through the second speaker line 212 . In addition, the test signal transmitted to the branch line 261 may be transmitted to the filter 270 disposed in the branch line 261 .

Meanwhile, the filter 270 may pass a frequency component of the inspection signal. Accordingly, the test signal may be transmitted to the line communication unit 210 and the power conversion unit 220 through the filter 270 .

Meanwhile, the power conversion unit 220 may convert a power signal that is an AC signal to generate a driving power that is a DC signal. In addition, the power conversion unit 220 may supply driving power to components in the monitoring device 200 . In this case, the monitoring device 200 may operate based on driving power.

Meanwhile, the control unit 230 supplied with driving power may start an operation. And the control unit 230 controls the switching element disposed between the second speaker line 212 and the third speaker line 213 to cut off the connection between the second speaker line 212 and the third speaker line 213. can In this case, the electrical connection through the speaker line 210 of the control device 100 and the speaker 400 is cut off, and the test signal transmitted from the control device 100 is not transmitted to the speaker 400 .

Meanwhile, the line communication unit 210 may separate the first communication signal by filtering the inspection signal when the inspection signal that has passed through the filter 270 is received. In addition, the control unit 230 may obtain a control command (speaker check command) by converting the first communication signal.

In this case, the controller 230 may acquire response information corresponding to the control command. Here, the response information may be an inspection result of the speaker 400 connected to the monitoring device 200 .

In more detail, the controller 230 may control the speaker test unit 240 to generate a speaker test signal.

In this case, the speaker inspection unit 240 may generate a speaker inspection signal based on the driving power supplied from the power conversion unit 220 , and output the generated speaker inspection signal to the speaker 400 . The speaker inspection unit 240 may measure a current flowing through the speaker 400 or an impedance within the speaker 400 and transmit a signal corresponding to the measured value to the control unit 230 .

In this case, the control unit 230 may obtain status information of the speaker 400 , that is, the inspection result of the speaker 400 connected to the monitoring device 200 , based on the signal received from the speaker inspection unit 240 .

Meanwhile, two speakers may be connected to one monitoring device 200 .

In this case, the control unit 230 outputs the first speaker test signal to the first speaker among the two speakers, and measures the current flowing through the first speaker or the impedance within the first speaker to obtain the inspection result for the first speaker. there is.

Then, the control unit 230 outputs the second speaker test signal to the second speaker among the two speakers, and measures the current flowing through the second speaker or the impedance within the second speaker to obtain the inspection result for the second speaker. there is.

Meanwhile, the control unit 230 may control the line communication unit 210 to convert the response information into a second communication signal and output it. In this case, the second communication signal may be transmitted to the control device 100 through the speaker line 210 (more specifically, the second speaker line 212 ).

Meanwhile, the line communication unit 150 of the control device 100 may receive the second communication signal. In addition, the control unit 130 may convert the second communication signal to obtain response information, that is, a result of checking the speaker.

In this case, the control unit 130 may display the inspection result of the speaker through the display unit of the control device 100 or output it as a sound through the speaker of the control device 100 .

Meanwhile, the controller 130 of the control device 100 may determine whether the speaker line 210 is disconnected based on whether the second communication signal is received.

Specifically, when the first communication signal is transmitted to the monitoring device 200, but the second communication signal in response to the first communication signal is not received from the monitoring device 200, the control unit 130 of the control device 100 is 2 It may be determined that the speaker line 212 is disconnected.

In this case, the controller 130 may display information indicating that the speaker line is disconnected through the display unit or may output the information as a sound through the speaker of the control device 100 .

4 is a diagram for explaining an operation when a plurality of amplifiers and monitoring devices are present.

The descriptions of FIGS. 1 to 3 above may also be applied to the following embodiments without contradiction.

The audio controller 500 may be connected to a plurality of amplifiers 310 , 320 , 330 , and 340 . In this case, the audio controller 500 may transmit audio signals to all of the plurality of amplifiers 310, 320, 330, and 340, and may transmit audio signals to some of the plurality of amplifiers 310, 320, 330, and 340. there is.

Meanwhile, each of the plurality of amplifiers 310 , 320 , 330 , and 340 may be connected to a plurality of speakers through speaker lines.

Specifically, the first amplifier 310 may be connected to the plurality of speakers 410 , 420 , 430 , and 440 through speaker lines.

In addition, the second amplifier 320 may also be connected to a plurality of speakers (not shown) through speaker lines.

Meanwhile, the control device 100 may be disposed at a rear end of the plurality of amplifiers 310 , 320 , 330 , and 340 .

Also, the plurality of monitoring devices 210 , 220 , 230 , and 240 may be disposed in front of the plurality of speakers 410 , 420 , 430 , 440 . For example, the first monitoring device 210 among the plurality of monitoring devices 210 , 220 , 230 , and 240 may be disposed at the front end of the first speaker 410 corresponding to the first monitoring device 210 .

Meanwhile, the control device 100 may monitor a plurality of speakers connected to a specific amplifier and a speaker line connecting the specific amplifier and the plurality of speakers.

For example, the control device 100 controls a plurality of speakers 410 , 420 , 430 , 440 connected to the first amplifier 310 , and the first amplifier 310 and the plurality of speakers 410 , 420 , 430 , 440 . Monitoring can be performed on the speaker line to be connected.

Meanwhile, two or more of the plurality of speakers connected to one amplifier may be installed on one pole.

Meanwhile, the second speaker line 212 may include a main speaker line 215 and a plurality of sub speaker lines 214-1, 214-2, 214-3, and 214-4.

Here, one end of the main speaker line 215 is connected to the control device 100, and the other end of the main speaker line 215 is a plurality of sub speaker lines 214-1, 214-2, 214-3, and 214-4. can be connected to

In addition, the plurality of sub speaker lines 214-1, 214-2, 214-3, and 214-4 may be connected to the main speaker line 215 and the plurality of monitoring devices 210, 220, 230, 240.

Among the plurality of sub-speaker lines 214-1, 214-2, 214-3, and 214-4, a specific sub-speaker line 214-1 has one end connected to the main speaker line 215 and the other end is correspondingly monitored. It may be connected to the device 210 .

Meanwhile, the control device 100 may monitor a plurality of speakers and speaker lines connected to a specific amplifier among a plurality of amplifiers.

Hereinafter, it is assumed that the control device 100 monitors the plurality of speakers 410 , 420 , 430 , 440 connected to the first amplifier 310 and speaker lines.

When the control device 100 does not monitor the plurality of speakers 410 , 420 , 430 , 440 connected to the first amplifier 310 , the control device 100 controls the first amplifier 310 and the first The plurality of speakers 410 , 420 , 430 , and 440 connected to the amplifier 310 may operate in a normal mode. Meanwhile, at the same time, monitoring of a plurality of speakers (not shown) connected to the second amplifier 320 may be performed. In this case, the control device 100 may operate in the speaker check mode with respect to the second amplifier 320 and a plurality of speakers (not shown) connected to the second amplifier 320 .

Meanwhile, in the normal mode, the line selector 170 may connect the first speaker line 211 through which the speaker signal is received from the first amplifier 310 and the second speaker line 212 .

In this case, the speaker signal output from the first amplifier 310 may be bypassed by the control device 100 and transmitted to the plurality of monitoring devices 410 , 420 , 430 , and 440 .

Meanwhile, the speaker signal bypassed by the control device 100 may be transmitted to the plurality of monitoring devices 410 , 420 , 430 , 440 through the second speaker line 212 .

For example, the speaker signal bypassed by the control device 100 may be transmitted to the first monitoring device 210 through the main speaker line 215 and the first sub speaker line 214 - 1 .

Meanwhile, the switching element disposed between the second speaker line 212 and the third speaker line 213 may be a normally close element. Accordingly, the speaker signal transmitted from the control device 100 may be bypassed by the plurality of monitoring devices 210 , 220 , 230 , and 240 and transmitted to the plurality of speakers 410 , 420 , 430 , 440 .

For example, the speaker signal passing through the sub speaker line 214 - 1 may be bypassed in the first monitoring device 210 and transmitted to the speaker 410 connected to the first monitoring device 210 .

In this case, the plurality of speakers 410 , 420 , 430 , 440 may convert the received speaker signal into sound and output it.

The following describes the operation in speaker check mode in chronological order.

When a monitoring command is received from the operating device through the operating communication unit 110 or a user monitoring command is received through the input unit of the control device 100 , the control device 100 includes the first amplifier 310 and the first amplifier 310 . The operation mode for the plurality of speakers 410 , 420 , 430 , and 440 connected to can be changed.

In this case, the control device 100 may change the operation mode for the first amplifier 310 and the plurality of speakers 410 , 420 , 430 , 440 connected to the first amplifier 310 from the normal mode to the speaker check mode. there is.

In this case, the control device 100 includes a first speaker line 211 between the amplifier 300 and the control device 100 and a second speaker line 212 between the control device 100 and the plurality of monitoring devices 200 . ) to block the connection.

In this case, the speaker signal output from the amplifier 300 may not be transmitted to the plurality of monitoring devices 200 .

Then, the control device 100 may output a power signal to the main speaker line 215 .

In this case, the control device 100 measures the magnitude of the current flowing through the main speaker line 215, and based on the measured magnitude of the current, the plurality of sub speaker lines 214-1, 214-2, 214-3, and 214 -4) can be determined.

Specifically, when the magnitude of the current flowing through the main speaker line 215 is out of the normal range or higher than a preset value, the controller 130 controls the plurality of sub speaker lines 214-1, 214-2, 214-3, 214-4) may be determined to be in a short-circuited state.

On the other hand, if it is determined that the plurality of sub-speaker lines 214-1, 214-2, 214-3, and 214-4 are short-circuited, the controller 130 controls the plurality of sub-speaker lines 214-1 and 214-2. , 214-3, and 214-4) may be displayed through the display unit of the control device 100 or output as sound through the speaker of the control device 100 .

Meanwhile, when it is determined that the plurality of sub-speaker lines 214-1, 214-2, 214-3, and 214-4 are in a normal state, the control device 100 may communicate with the monitoring device 200 .

In this case, the control device 100 may perform general communication with the monitoring device 200, and may communicate with the monitoring device 200 in a power-line communication (PLC) method.

The control device 100 may control the line communication unit 150 to generate the first communication signal. In this case, the line communication unit 150 may output the first communication signal.

When the Power-Line Communications (PLC) method is used, the first communication signal may be mixed with the power signal, and a test signal in which the power signal and the first communication signal are mixed may be output.

Meanwhile, the control device 100 may convert the control command into the first communication signal. Here, the control command may be a speaker check command.

And so that the plurality of monitoring devices (210, 220, 230, 240) to obtain the inspection results for the plurality of speakers (410, 420, 430, 440), the control device 100 is a speaker inspection command to the plurality of monitoring devices ( 210, 220, 230, 240).

Specifically, the control device 100 transmits the first communication signal to the first amplifier 310 and a speaker line connecting the plurality of speakers 410, 420, 430, 440 (more specifically, the second speaker line 212) It can be transmitted to the plurality of monitoring devices (210, 220, 230, 240) through the.

Meanwhile, the plurality of monitoring devices 210 , 220 , 230 , 240 may receive a first communication signal transmitted through a speaker line.

Specifically, when a general communication method is used, the plurality of monitoring devices 210 , 220 , 230 , and 240 may be supplied with driving power by a separate external power source. And the plurality of monitoring devices (210, 220, 230, 240) may receive the first communication signal.

In addition, in a Power-Line Communications (PLC) method, the plurality of monitoring devices 210 , 220 , 230 , 214 may operate by generating driving power using a power signal. And the plurality of monitoring devices (210, 220, 230, 214) may extract the first communication signal from the test signal.

In addition, the plurality of monitoring devices 210 , 220 , 230 , and 240 may block the connection between the second speaker line and the third speaker line.

For example, the first monitoring device 210 may block the connection between the first sub speaker line 214 - 1 and the third speaker line 213 - 1 corresponding to the first monitoring device 210 .

Meanwhile, the plurality of monitoring devices 210 , 220 , 230 , 240 may obtain a control command (speaker check command) by converting the first communication signal.

In this case, the plurality of monitoring devices 210 , 220 , 230 , and 240 may acquire response information corresponding to the control command. Here, the response information may be an inspection result of the speaker 400 connected to the monitoring device 200 .

Specifically, the plurality of monitoring devices 210 , 220 , 230 , and 240 may generate a speaker test signal and output the generated speaker test signal to a corresponding speaker.

For example, among the plurality of monitoring devices 210 , 220 , 230 , and 240 , the first monitoring device 210 may generate a speaker test signal and output it to the speaker 410 connected to the first monitoring device 210 .

Then, the plurality of monitoring devices (210, 220, 230, 240) measure the current flowing through the corresponding speaker or the impedance in the corresponding speaker, and based on the measured value, the status information of the corresponding speaker (check for the connected speaker) result) can be obtained.

Meanwhile, the control device 100 may transmit a report command designating the first monitoring device 210 among the plurality of monitoring devices 210 , 220 , 230 , and 240 to the plurality of monitoring devices 210 , 220 , 230 , and 240 . there is.

Specifically, the control device 100 converts a report command designating the first monitoring device 210 into a first communication signal, and converts the first communication signal to a first amplifier 310 and a plurality of speakers 410, 420, 430 , 440 may be transmitted to the plurality of monitoring devices 210 , 220 , 230 , 240 through a speaker line (more specifically, a second speaker line 212 ) connecting them.

Meanwhile, the plurality of monitoring devices 210 , 220 , 230 , 240 may receive a first communication signal, convert the first communication signal, and obtain a report command designating the first monitoring device 210 .

In this case, the first monitoring device 210 may convert the inspection result of the first monitoring device, that is, the inspection result of the speaker 410 connected to the first monitoring device, into a second communication signal and transmit it to the control device 100 . .

On the other hand, the second monitoring device 220 , the third monitoring device 230 , and the fourth monitoring device 240 may not transmit the inspection result because they are not commands designated for themselves.

Meanwhile, when the inspection result of the first monitoring device is received from the first monitoring device 210 , the control device 100 designates the second monitoring device 220 among the plurality of monitoring devices 210 , 220 , 230 , 240 . A report command may be transmitted to the plurality of monitoring devices 210 , 220 , 230 , and 240 .

In this case, the plurality of monitoring devices 210 , 220 , 230 , 240 may receive a first communication signal, convert the first communication signal, and obtain a report command designating the second monitoring device 220 .

In this case, the second monitoring device 210 may convert the inspection result of the second monitoring device, that is, the inspection result of the speaker 420 connected to the second monitoring device, into a second communication signal and transmit it to the control device 100 . .

In this case, the control device 100 may receive the inspection result from the second monitoring device 220 .

In this way, inspection results for the first to fourth speakers may be sequentially obtained.

And the control device 100 may display the inspection result of the plurality of speakers 410 , 420 , 430 , 440 through the display unit of the control device 100 or output as sound through the speaker of the control device 100 . .

Meanwhile, whether the second speaker line 212 is disconnected may be determined based on whether the control device 100 receives the second communication signal.

Specifically, the control device 100 assumes that the sub-speaker line connected to the monitoring device through which the second communication signal is not received among the plurality of sub-speaker lines 214-1, 214-2, 214-3, and 214-4 is disconnected. can decide

For example, the inspection result is received from the second monitoring device 220 , the third monitoring device 230 , and the fourth monitoring device 240 , but the inspection result is not received from the first monitoring device 210 . In this case, the control device 100 may determine that the first sub-speaker line 214 - 1 connected to the first monitoring device 210 to which the second communication signal is not received is disconnected.

In this case, the controller 130 may display information indicating the disconnected sub-speaker line through the display unit or may output the information as sound through the speaker of the control device 100 .

The following describes the operation using the operation software for status monitoring.

The foregoing description may also be applied to the following embodiments without contradiction.

5 is a diagram illustrating an operation device 700 in which operation software is installed.

6 is a flowchart illustrating a state monitoring method according to the present invention.

The operation device 700 is a device in which operation software for state monitoring is installed, and may perform the following operations by the operation software.

The operation device 700 is connected to the operation communication unit 110 of the control device 100 by a wired or wireless network, and transmits/receives data with the control device 100 through the connected network or another network linked to the connected network can receive

Meanwhile, the operation device 700 may create an operation policy. Here, the operation policy may include a monitoring time, a monitoring period, a monitoring target speaker group (a set of a plurality of speakers connected to one amplifier), a monitoring target speaker line, and the like.

In this case, the operation device 700 receives an input from the user for at least one of a monitoring time (immediate implementation or reservation time), a monitoring period, a monitoring target speaker group, and a monitoring target speaker line, and executes an operation policy based on the user input. can create

Meanwhile, the operation device 700 may transmit a monitoring command based on the operation policy (S610). Here, the monitoring command may include at least one of a monitoring instruction, a monitoring target speaker group, and a monitoring target speaker line.

In this case, the control device 100 may receive a monitoring command. In addition, the control device 100 may generate a control command based on the monitoring command.

For example, when a monitoring command for the plurality of speakers 410 , 420 , 430 , 440 connected to the first amplifier 310 is received, the control device 100 sends the first amplifier 310 to the first amplifier 310 based on the monitoring command. The plurality of connected speakers 410 , 420 , 430 , 440 and 'a speaker line connecting the first amplifier 310 and the plurality of speakers 410 , 420 , 430 , 440 ' may be tested.

Hereinafter, it is assumed that monitoring commands for the plurality of speakers 410 , 420 , 430 , and 440 connected to the first amplifier 310 are received.

In this case, the control device 100 outputs a power signal to the main speaker line 215, measures the magnitude of the current flowing through the main speaker line 215, and based on the measured current, a plurality of sub-speaker lines 214- 1, 214-2, 214-3, 214-4) may be short-circuited or not (S620).

On the other hand, the control device 100, based on the monitoring command, converts the control command into a first communication signal and through a speaker line connecting the first amplifier 310 and the plurality of speakers (410, 420, 430, 440) A first communication signal may be transmitted (S630).

In this case, the plurality of monitoring devices 210, 220, 230, 240 receives the first communication signal transmitted through the speaker line, obtains response information corresponding to the control command, and transmits the response information to the second communication signal can be converted to and transmitted to the control device through the speaker line (S640, S650).

In this case, the control device 100 may obtain the inspection results for the plurality of speakers 410 , 420 , 430 , and 440 . In addition, the control device 100 may determine that the sub-speaker line connected to the monitoring device to which the second communication signal is not received among the plurality of monitoring devices 210 , 220 , 230 , and 240 is disconnected ( S640 , S650 ).

Meanwhile, the control device 100 may transmit information on whether a plurality of sub-speaker lines are short-circuited, an inspection result of the plurality of speakers, and information on the disconnected speaker lines to the operation device 700 .

In this case, the operating device 700 may display at least one of information on whether the plurality of sub speaker lines are short-circuited, the inspection result of the plurality of speakers, and information on the disconnected speaker lines ( S670 ).

In detail, the operating device 700 may display, as shown in FIG. 5 , a broken speaker among a plurality of speakers to be identifiable. In this case, the operating device 700 may display a map on which a plurality of speakers are displayed and display the broken speakers to be identifiable, thereby providing location information of the broken speakers together.

In addition, the operating device 700 may display information on a plurality of shorted sub speaker lines or display information about a broken sub speaker line.

On the other hand, the operation device 700 may store the failure history including information on whether a plurality of sub speaker lines are short-circuited, the inspection result of the plurality of speakers and information on the disconnected speaker line in the memory, and display the failure history. there is.

As described above, according to the present invention, even if the speakers are distributed in a wide space, since a failure occurs in which speaker or in which speaker line is remotely monitored, monitoring is possible with only a small number of operating personnel. In distributed or complex buildings such as schools, universities, amusement facilities, and military bases, the status of speakers or lines can be easily monitored.

In addition, in the existing broadcasting system, a speaker line connecting an amplifier and a speaker has already been established. And, since the present invention uses the existing speaker line as it is, it is possible to operate only by mounting the control device and the monitoring device on the existing speaker line without the need to install a separate line. Therefore, there is an advantage in that cost and effort can be reduced.

Also, even if a plurality of speakers are installed on one pole, there is an advantage in that it is possible to accurately identify which speaker among the plurality of speakers has a failure.

Also, the speaker is not connected to a separate external power source. In such a situation, if an external power source needs to be connected to the monitoring device installed at the front end of the speaker, there is a problem in that a separate line for installing the external power source is required. However, in the present invention, since the monitoring device is operated with power supplied from the control device, there is an advantage in that this problem can be solved.

Meanwhile, the controller 230 may control the speaker tester 240 to generate a speaker test signal.

In this case, the control unit 230 outputs the first speaker inspection signal to obtain the inspection result for the primary side of the speaker unit (the primary side of the transformer 700), and outputs the second speaker inspection signal to the secondary side of the speaker unit It is possible to obtain a check result for (secondary side of the transformer 700).

First, a method of obtaining the inspection result for the primary side of the speaker unit (the primary side of the transformer 700) will be described with reference to FIG. 7 .

7 is a view for explaining a method of checking a primary side state of a trance of a speaker according to the present invention.

The speaker 400 may include a trance 700 or may be connected to a trance 700 .

The control unit 230 of the monitoring device 200 may generate a first speaker test signal and apply it to the speaker 400 (S710). In this case, the first speaker test signal may be a DC signal.

In addition, the control unit 230 of the monitoring device 200 may measure an output signal of the transformer 700 , that is, a current flowing through the primary side of the transformer 700 ( S720 ).

As an example of current measurement, a resistance element such as a pull-down resistor may be installed on the primary-side line of the transformer. In this case, the controller 230 of the monitoring device 200 controls the voltage value of the sensing element. The current flowing through the primary side of the transformer 700 may be measured in a manner of obtaining it.

Meanwhile, the control unit 230 of the monitoring device 200 may determine whether the magnitude of the current flowing through the primary side of the transformer 700 is within the normal range ( S730 ).

For example, when the voltage value of the sensing element is in the high section (for example, 2.4V to 3.3V), the control unit 230 may determine that the primary side of the speaker unit (the primary side of the transformer 700) is normal. (S740).

As another example, when the voltage value of the sensing element is in the low section (for example, 0V to 0.9V), the controller 230 determines that the primary side of the speaker unit (the primary side of the transformer 700) is disconnected. It can be (S750).

8 is a view for explaining a method of checking a state of a secondary side of a trance of a speaker according to the present invention.

The control unit 230 of the monitoring device 200 may generate a second speaker test signal and apply it to the speaker 400 (S810). In this case, the second speaker test signal may be an AC signal.

In addition, the control unit 230 of the monitoring device 200 may obtain an amount of change in impedance of both ends of the primary side of the transformer 700 (S820).

Specifically, the impedance sensing circuit installed on the primary side of the transformer 700 may measure an impedance value while the second speaker test signal (AC signal) flows, and may transmit the impedance value to the controller 230 .

In this case, the controller 230 may acquire an impedance change amount that is a difference between an impedance value in a normal state and an impedance value while the second speaker test signal (AC signal) flows.

And when the impedance change amount is within the normal range, the controller 230 may determine that the secondary side of the speaker unit (the secondary side of the transformer 700) is normal (S840).

Also, when the impedance variation is outside the normal range, the controller 230 may determine that the secondary side of the speaker unit (the secondary side of the transformer 700) is disconnected (S850).

Meanwhile, the control unit 230 generates response information including the inspection result for the primary side of the speaker unit (the primary side of the transformer 700) and the inspection result for the secondary side of the speaker unit (the secondary side of the transformer 700). and the response information may be converted into a second communication signal and transmitted to the control device 100 .

The present invention described above can be implemented as computer-readable codes on a medium in which a program is recorded. The computer-readable medium includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is this. In addition, the computer may include a control unit. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

100: control device 200: monitoring device

Claims (18)

a control device for converting a control command into a first communication signal and transmitting a test signal in which a power signal and the first communication signal are mixed through a speaker line connecting the amplifier and the first speaker; and
Receives the test signal transmitted through the speaker line, converts the power signal to generate driving power, operates based on the driving power to obtain response information corresponding to the control command, and receives the response information a first monitoring device for converting a second communication signal and transmitting it to the control device through the speaker line;
The first monitoring device,
a power converter converting the power signal included in the test signal to supply the driving power to the components in the first monitoring device;
a branch line connected to the speaker line and the power conversion unit to which the test signal transmitted through the speaker line is branched;
a switching element for blocking a connection between the control device and the first speaker through the speaker line; and
A control unit that does not operate while the power signal is not received by the power conversion unit, and starts an operation by receiving the driving power to control the operation of the first monitoring device;
The control unit is
to obtain the control command by converting the first communication signal based on the driving power;
Based on the driving power, controlling the switching element to block the connection between the control device and the first speaker through the speaker line by controlling the switching element so that the test signal is not transmitted to the first speaker through the speaker line,
Based on the driving power, a first speaker test signal that is a DC signal is generated and output to the first speaker, and the current flowing through the primary side of the transformer in the first speaker is sensed to determine whether the primary side of the transformer is disconnected decide,
Based on the driving power, a second speaker test signal that is an AC signal is generated and output to the first speaker, and whether the secondary side of the transformer is disconnected is determined using the impedance value measured at the primary side of the transformer, ,
Based on the driving power, the response information including the inspection result for the first speaker is converted into the second communication signal and transmitted to the control device
Condition monitoring system using speaker lines of broadcast sound equipment. The method of claim 1,
The control device is
disposed at the rear end of the amplifier,
The first monitoring device,
disposed at the front end of the first speaker
Condition monitoring system using speaker lines of broadcast sound equipment. 3. The method of claim 2,
The control device is
cut off the connection of the first speaker line between the amplifier and the control device and the second speaker line between the control device and the first monitoring device;
outputting the power signal to the second speaker line, measuring the magnitude of a current flowing through the second speaker line, and determining whether the second speaker line is short-circuited based on the measured current,
When it is determined that the second speaker line is in a normal state, the test signal in which the power signal and the first communication signal are mixed is transmitted to the first monitoring device
Condition monitoring system using speaker lines of broadcast sound equipment. delete The method of claim 1,
The speaker signal output from the amplifier and transmitted through the speaker line,
In the normal mode, the first monitoring device is bypassed and delivered to the first speaker,
The test signal is
In the speaker check mode, it is transmitted to the power conversion unit through a filter disposed on the branch line, and is not transmitted to the first speaker through the speaker line as the switching element is controlled.
Condition monitoring system using speaker lines of broadcast sound equipment. delete The method of claim 1,
The first monitoring device,
When the driving power is generated by converting the power signal received through the branch line by the power conversion unit, the second speaker line between the control device and the first monitoring device and the second speaker line between the control device and the first monitoring device are operated based on the driving power. 1 to block the connection of the third speaker line between the monitoring device and the first speaker
Condition monitoring system using speaker lines of broadcast sound equipment. delete The method of claim 1,
The control device is
determining whether the speaker line is disconnected based on whether the second communication signal is received
Condition monitoring system using speaker lines of broadcast sound equipment. The method of claim 1,
a plurality of speakers including the first speaker and connected to the amplifier through the speaker line; and
The speaker includes the first monitoring device, receives the test signal transmitted through the speaker line, acquires the response information corresponding to the control command, and converts the response information into the second communication signal A plurality of monitoring devices for transmitting to the control device through a line; further comprising,
The speaker line is
including 'a main speaker line connected to the control device' and 'a plurality of sub speaker lines connected to the main speaker line and the plurality of monitoring devices'
Condition monitoring system using speaker lines of broadcast sound equipment. 11. The method of claim 10,
The control device is
Determining that a sub-speaker line connected to a monitoring device through which the second communication signal is not received among the plurality of sub-speaker lines is disconnected
Condition monitoring system using speaker lines of broadcast sound equipment. 11. The method of claim 10,
The control device is
sending a speaker inspection command to the plurality of monitoring devices so that the plurality of monitoring devices obtain inspection results for the plurality of speakers;
sending a report command designating the first monitoring device among the plurality of monitoring devices to the plurality of monitoring devices to receive the inspection result of the first monitoring device from the first monitoring device;
Transmitting a report command for designating a second monitoring device among the plurality of detection devices to the plurality of monitoring devices to receive the inspection result of the second monitoring device from the second monitoring device
Condition monitoring system using speaker lines of broadcast sound equipment. 11. The method of claim 10,
A monitoring command is transmitted to the control device based on an operation policy, and as a result of checking the plurality of speakers from the control device, at least one of information on a plurality of shorted sub speaker lines and information on a broken sub speaker line Operating device for receiving and displaying; further comprising
Condition monitoring system using speaker lines of broadcast sound equipment. 14. The method of claim 13,
The control device is
converting the control command into the first communication signal based on the monitoring command and transmitting the first communication signal to the plurality of monitoring devices through the speaker line;
Obtaining inspection results for the plurality of speakers based on the second communication signal received from the plurality of monitoring devices,
The operating device is
Displaying the inspection results for the plurality of speakers
Condition monitoring system using speaker lines of broadcast sound equipment. 15. The method of claim 14,
The operating device is
receiving input for at least one of a monitoring time, a monitoring period, a monitored speaker group, and a monitored speaker line.
Condition monitoring system using speaker lines of broadcast sound equipment. 14. The method of claim 13,
The control device is
outputting a power signal to the main speaker line, measuring the magnitude of a current flowing through the main speaker line, and determining whether the main speaker line and the plurality of sub-speaker lines are short-circuited based on the measured current;
The operating device is
Displaying information about a plurality of shorted sub-speaker lines.
Condition monitoring system using speaker lines of broadcast sound equipment. 14. The method of claim 13,
The control device is
transmitting the first communication signal to the plurality of monitoring devices through the main speaker line and the plurality of sub speaker lines;
It is determined that a sub-speaker line connected to a monitoring device from which the second communication signal is not received among the plurality of monitoring devices is disconnected,
The operating device is
Displaying information about the disconnected sub-speaker line
Condition monitoring system using speaker lines of broadcast sound equipment. delete

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