KR102208554B1 - Speaker selector having protection function for amplifier - Google Patents

Abstract

Disclosed is a speaker selector having a protection function for an amplifier. To this end, the speaker selector of the present invention includes: an amplifier signal input/output unit which receives an audio signal output from an external amplifier and outputs a plurality of audio signals; a speaker connection unit connected to a plurality of external speaker units and transmitting a plurality of audio signals output through the amplifier signal input/output unit to the plurality of external speaker units; and a plurality of check units which check the output impedance of a plurality of external speaker units connected through the speaker connection unit, respectively, and block the connection with the speaker in which the abnormality has occurred. Accordingly, even when an abnormality occurs in the speaker, the amplifier is prevented from being damaged.

Description

Speaker selector having protection function for amplifier {Speaker selector having protection function for amplifier}

The present invention relates to a speaker selection device having an amplifier protection function, and more particularly, an amplifier protection function capable of protecting an amplifier by detecting an abnormality in a speaker constituting an in-house broadcasting system and blocking a line is provided. It relates to a speaker selection device provided.

In recent years, as interest in safety increases, the need for announcements to prepare for a disaster situation is increasing. That is, when a disaster such as an earthquake or fire occurs in apartment houses, public institutions, shopping malls or amusement parks with a large floating population, and educational facilities, announcements are required for quick evacuation. Accordingly, in most buildings or facilities, a premises broadcasting system is installed, and a general premises broadcasting system includes a configuration as shown in FIG. 1.

As shown in FIG. 1, in a general in-house broadcasting system, an audio signal output from an audio source (not shown) is amplified through an amplifier 20, and the speaker units 30-1 and 30-2 are selected through the speaker selector 10. , ..., 30-n). Here, if an abnormality occurs in the speaker units 30-1, 30-2, ..., 30-n, the amplifier 20 is damaged, and in an emergency, broadcasting is impossible.

For example, the first speaker unit 30-1 is installed on the first floor of the building, the second speaker unit 30-2 is installed on the second floor of the building, ..., the Nth speaker unit 30 When -n) is installed on the N floor of a building, if a fire occurs on the first floor and the first speaker unit 30-1 is shorted, overload and overcurrent occur in the line to which the speaker unit 30-1 is connected. The amplifier 20 is damaged and the entire broadcasting system in the premises is paralyzed. As a result, the broadcasting system in the premises itself becomes useless, and it is not possible to quickly respond to disasters, resulting in an increase in personal and property damage.

Korean Registered Patent Publication No. 10-0998516 (2010.11.30.)

Accordingly, an object of the present invention was invented to solve the above problems, and when an abnormality occurs in a speaker constituting an in-house broadcasting system, it is possible to establish a stable in-house broadcasting system by detecting it and blocking the line to protect the amplifier. It is to provide a speaker selection device with an amplifier protection function.

A speaker selection device having an amplifier protection function of the present invention,

An amplifier signal input/output unit for receiving an audio signal output from an external amplifier and outputting a plurality of audio signals;

A speaker connection unit connected to a plurality of external speaker units and transmitting a plurality of audio signals output through the amplifier signal input/output unit to the plurality of external speaker units;

A controller configured to control the amplifier signal input/output unit to receive the audio signal output from the amplifier and distribute and output the audio signal to transmit the audio signal to the selected speaker unit; And

Including; a plurality of check units for blocking the connection to the speaker in which an abnormality has occurred by checking output impedances of the plurality of external speaker units connected through the speaker connection unit, respectively,

The check unit,

Consisting of a first band check unit, a first switch, a second band check unit, a second switch and a fuse;

The first band check unit,

When a signal is input from the speaker connection unit, the output impedance of the external speaker unit connected through the speaker connection unit is checked, and if it exceeds the first designated capacity set by the control unit, switching to the second band check unit or blocking the connection to the amplifier signal input/output unit , Operating the first switch to switch to the amplifier signal input/output unit when the first designated capacity is not reached;

The first switch is operated according to the first band check;

The second band check unit,

When a signal is input from the first switch, the output impedance of the external speaker unit connected through the speaker connection unit is checked, and when it exceeds the second designated capacity set by the control unit, switching to a fuse or disconnecting the connection to the amplifier signal input/output unit, Operating a second switch to switch to the amplifier signal input/output unit when it is less than the preset value;

The second switch is operated according to the second band checker;

The fuse,

When the output impedance is higher than the high capacity reference value specified by the control unit, the line with the amplifier signal input/output unit is cut off;

It is characterized in that it has an amplifier protection function, characterized in that the first designated capacity in the first band check unit is smaller than the second designated capacity in the second band check unit.

It is preferable to further include a display unit displaying a speaker unit receiving the audio signal output from the amplifier signal input/output unit.

In the display unit,

It is preferable that the speaker unit that is disconnected from the connection by the plurality of check units is further displayed.

According to the speaker selection device having an amplifier protection function of the present invention, when an abnormality occurs in any one of the connected speakers, the connection with the speaker is blocked, thereby preventing damage to the amplifier due to overcurrent or overload. Thus, a stable broadcasting system system can be established.

1 is a block diagram showing a part of the configuration of a general in-house broadcasting system;
2 is a block diagram showing a schematic configuration of a speaker selection device according to an embodiment of the present invention, and
3 is a block diagram schematically showing the configuration of a check unit included in a speaker selection device according to an embodiment of the present invention.

In order to explain the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, the following will illustrate a preferred embodiment of the present invention and look at it with reference.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features or It is to be understood that the presence or addition of numbers, steps, actions, components, parts, or combinations thereof does not preclude the possibility of preliminary exclusion.

In describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, a speaker selection device having an amplifier protection function according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing a schematic configuration of a speaker selection apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the speaker selection device 100 of the present invention selectively selects an audio signal output from the amplifier 20 to a plurality of speaker units 30-1, 30-2, ..., 30-n. send. For example, when the speaker selection device 100 of the present invention is included in the premises broadcasting system installed in a building, the plurality of speaker units 30-1, 30-2, ..., 30-n are each floor Is installed in Each of the plurality of speaker units 30-1, 30-2, ..., 30-n may be composed of one or more speakers, and an audio signal output through the speaker selection device 100 is transmitted to a corresponding area. Output by voice.

The speaker selection device 100 includes an amplifier signal input/output unit 110, first to Nth check units 120-1,120-2,...,120-n, a speaker connection unit 130, and a user command input unit 140 , A display unit 150, a storage unit 160, a communication unit 170, and a control unit 190.

The amplifier signal input/output unit 110 receives audio signals output from the external amplifier 20 and outputs a plurality of audio signals. That is, the amplifier signal input/output unit 110 distributes one audio signal output from the amplifier 20 to a plurality of speakers so as to be transmitted to the plurality of speaker units 30-1, 30-2, ..., 30-n. And print it out.

A plurality of external speaker units 30-1, 30-2, ..., 30-n are connected to the speaker connection unit 130, and a plurality of audio signals output through the amplifier signal input/output unit 110 are connected to the speaker connection unit. It is transmitted to a plurality of external speaker units 30-1, 30-2, ..., 30-n through 130.

The first to Nth check units 120-1,120-2,...,120-n are a plurality of external speaker units 30-1, 30-2, ..., 30 connected through the speaker connection unit 130 Check each output impedance of -n) and cut off the connection with the speaker part where the error occurred. An abnormality occurrence signal for the speaker unit in which an abnormality has occurred is transmitted to the control unit 190 to be described later through the first to Nth check units 120-1,120-2,...,120-n, and the display unit 150 Error occurrence information for the speaker unit is displayed in. Specific operations of the first to Nth check units 120-1, 120-2, ..., 120-n will be described in detail later with reference to FIG. 3.

The user command input unit 140 receives a user command for controlling the operation of the speaker selection device 100 and transmits the received user command to the control unit 190. That is, when a selection command for selecting a speaker unit for outputting a voice among a plurality of external speaker units 30-1, 30-2, ..., 30-n is input, the controller 190 provides an audio signal to the The amplifier signal input/output unit 110 is controlled so that is transmitted.

On the display unit 150, a speaker unit that receives the audio signal output from the amplifier signal input/output unit 110 is displayed. For example, when the voice is to be output through the first speaker unit 30-1 and the second speaker unit 30-2, the first speaker unit 30-1 through the user command input unit 140 ) And a command for selecting the second speaker unit 30-2 are input, and the control unit 190 is an amplifier so that an audio signal is transmitted to the first speaker unit 30-1 and the second speaker unit 30-2. Controls the signal input/output unit 110. At this time, the display unit 150 displays a user to confirm that the voice is being output through the first speaker unit 30-1 and the second speaker unit 30-2.

In addition, it is possible to further display a speaker unit that is disconnected from the display unit 150. That is, when the connection with the speaker unit in which an error has occurred is blocked by the first to Nth check units 120-1, 120-2,..., 120-n, the error occurrence signal is transmitted to the control unit 190, and , On the display unit 150, abnormality occurrence information is displayed so that a user can confirm that an abnormality has occurred in the corresponding speaker unit.

The storage unit 160 stores programs for controlling the operation of the speaker selection device 100 and various data.

The communication unit 170 communicates with an external terminal device (not shown) through a network to transmit and receive a control signal for controlling the operation of the speaker selection device 100. Through the communication unit 170, a selection command for selecting a speaker unit for outputting audio among a plurality of external speaker units 30-1, 30-2, ..., 30-n may be transmitted. In addition, abnormality occurrence information on the speaker unit in which the abnormality has occurred is transmitted to the external terminal device.

The controller 190 controls the operation of the speaker selection device 100 according to a user command input through the user command input unit 140. That is, according to the speaker selection command input through the user command input unit 140, the amplifier signal input/output unit 110 is controlled so that the audio signal is transmitted to the selected speaker unit, and the speaker unit outputting the voice is displayed on the display unit 150 Control to be possible. In addition, when an abnormality occurrence signal is transmitted from the first to Nth check units 120-1, 120-2,..., 120-n, the abnormality occurrence information for the corresponding speaker unit is controlled to be displayed on the display unit 150. .

3 is a block diagram schematically showing the configuration of a check unit included in a speaker selection device according to an embodiment of the present invention.

In FIG. 3, the first check unit 120-1 is described as an example, and the configuration of the second to Nth check units 120-2, ..., 120-n is illustrated in the first check unit 120-1 It is the same as the configuration of

The first check unit 120-1 includes a first band check unit 121, a first switch 123, a second band check unit 125, a second switch 127, and a fuse 129. .

The first band check unit 121 and the second band check unit 125 switch the first switch 123 and the second switch 127 by checking the output impedance of the first speaker unit 30-1. .

Speakers of various capacities may be connected to the first speaker unit 30-1 connected to the speaker connection unit 130.

The speaker connection unit 130 in FIG. 3 is directly connected to the first speaker unit 30-1, and the output impedance measured by the first check unit 120-1 through the speaker connection unit 130 is the first spik unit ( It is the output impedance of 30-1).

First, a case where the first speaker unit 30-1 is a low-capacity speaker unit exhibiting an output impedance of less than 80W in a normal case will be described.

In the present embodiment, the low-capacity reference is set to 80W, but the low-capacity reference value is changed as necessary, and this low-capacity reference value is set by the control unit. .

The first band check unit 121 checks the output impedance from the speaker connection unit 130. The control unit designates the first designated capacity. In this embodiment, the designation of 60W will be described.

The first band check unit 121 that checks the low-capacity output impedance controls the first switch 123 to cut off the connection to the amplifier signal input/output unit or switch to the second band check unit when the output impedance exceeds 60W. At this time, whether to cut off or switch to the second band check unit is designated by the control unit.

The first band check unit 121 is switched to the amplifier signal input/output unit 110 when the output impedance is less than 60W, which is the first designated capacity.

First, a case where the first speaker unit 30-1 is a high-capacity speaker unit exhibiting an output impedance of 80W or more and less than 400W will be described.

In the present embodiment, the high capacity reference is set to 400W, but the high capacity reference value is changed as necessary, and this high capacity reference value is set by the control unit.

When the first band check unit 121 exceeds the low capacity reference value or the first designated capacity, the first switch is switched to the second band check unit 125.

The control unit also designates the second designated capacity for the second band check unit 125. In this embodiment, a description will be given of designating the second designated capacity as 200W.

When the output impedance of the second band check unit 125 is less than the second designated capacity, the second switch 127 is switched to the amplifier signal input/output unit 110.

The second band check unit 125 controls the second switch 127 to cut off the connection to the amplifier signal input/output unit 110 or switch to the fuse 129 when the output impedance exceeds the second designated capacity. At this time, whether to cut off or switch to a fuse is designated by the control unit.

The first and second designated capacities to be checked in the first and second band check units are set by the control unit according to the normal output impedance of the speaker connected to the speaker unit.

The first designated capacity checked by the first band check unit is smaller than the second designated capacity checked by the second band check unit.

The fuse 129 is installed on the line so that the line is cut when the high capacity reference value is exceeded through the line connected to the first speaker unit 30-1. In the case of an aging line, the impedance measurement value at 400W is not constant, so it may be misjudged as a disconnection. When an impedance of 400W or more is measured, the second switch 127 is switched to the fuse 129, and if the actual impedance is 400W or more, the fuse ( A fuse is installed so that 129 is blown, otherwise, a signal is transmitted to the amplifier signal input/output unit 110. Accordingly, it is possible to prevent a misjudgment due to non-uniformity of the impedance measurement value.

If an abnormality occurs in the external speaker unit (30-1, 30-2, ..., 30-n) by the above configuration, the connection to the speaker unit where the abnormality has occurred is blocked regardless of the capacity of the speaker unit. By protecting the amplifier 20, it is possible to smoothly output an announcement in case of an emergency.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the technical field to which the present invention pertains can understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention. There will be.

Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

10: speaker selector 20: amplifier
30-1,30-2,...,30-n; Multiple external speaker units
100: speaker selection device 110: amplifier signal input/output unit
120-1,120-2,...,120-n; 1st to Nth check parts
121: first band check unit 123: first switch
125: second band check unit 127: second switch
129: fuse 130: speaker connection
140: user command input unit 150: display unit
160: storage unit 170: communication unit
190: control unit

Claims (3)

An amplifier signal input/output unit for receiving an audio signal output from an external amplifier and outputting a plurality of audio signals;
A speaker connection unit connected to a plurality of external speaker units and transmitting a plurality of audio signals output through the amplifier signal input/output unit to the plurality of external speaker units;
A control unit for receiving the audio signal output from the amplifier and controlling the amplifier signal input/output unit to distribute and output the audio signal to transmit the audio signal to the selected speaker unit; And
Including; a plurality of check units for blocking the connection to the speaker in which an abnormality has occurred by checking output impedances of the plurality of external speaker units connected through the speaker connection unit,

The check unit,
Consisting of a first band check unit, a first switch, a second band check unit, a second switch and a fuse;

The first band check unit,
When a signal is received from the speaker connection unit, the output impedance of the external speaker unit connected through the speaker connection unit is checked, and if it exceeds the first designated capacity set by the control unit, switching to the second band check unit or blocking the connection to the amplifier signal input/output unit , Operating the first switch to switch to the amplifier signal input/output unit when the first designated capacity is not reached;

The first switch is operated according to the first band check;

The second band check unit,
When a signal is input from the first switch, the output impedance of the external speaker unit connected through the speaker connection unit is checked, and when it exceeds the second designated capacity set by the control unit, switching to a fuse or disconnecting the connection to the amplifier signal input/output unit, Operating the second switch to switch to the amplifier signal input/output unit when the preset value is not reached;

The second switch is operated according to the second band checker;

The fuse,
When the output impedance is higher than the high capacity reference value specified by the control unit, the line with the amplifier signal input/output unit is cut off;

A speaker selection device with an amplifier protection function, wherein a first designated capacity in the first band check unit is smaller than a second designated capacity in the second band check unit.
The method of claim 1,
And a display unit for displaying a speaker unit receiving an audio signal output from the amplifier signal input/output unit.
The method of claim 2,
In the display unit,
A speaker selection device with an amplifier protection function, characterized in that the speaker unit disconnected from the connection by the plurality of check units is further displayed.

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