KR101626271B1 - Powerless speaker switches for public address system - Google Patents

Powerless speaker switches for public address system Download PDF

Info

Publication number
KR101626271B1
KR101626271B1 KR1020160033185A KR20160033185A KR101626271B1 KR 101626271 B1 KR101626271 B1 KR 101626271B1 KR 1020160033185 A KR1020160033185 A KR 1020160033185A KR 20160033185 A KR20160033185 A KR 20160033185A KR 101626271 B1 KR101626271 B1 KR 101626271B1
Authority
KR
South Korea
Prior art keywords
speaker switch
speaker
power
switch
public address
Prior art date
Application number
KR1020160033185A
Other languages
Korean (ko)
Inventor
허문만
정경권
문기석
Original Assignee
주식회사 에스트론
허문만
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 에스트론, 허문만 filed Critical 주식회사 에스트론
Priority to KR1020160033185A priority Critical patent/KR101626271B1/en
Application granted granted Critical
Publication of KR101626271B1 publication Critical patent/KR101626271B1/en
Priority to PCT/KR2016/009633 priority patent/WO2017078262A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/007—Monitoring arrangements; Testing arrangements for public address systems

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powerless speaker switch added to a public address system, and more particularly, to a powerless speaker switch which is installed in a broadcasting line of a public address system, The speaker switch of the present invention operates in the same manner as that of the conventional speaker switch except that the speaker switch of the non-power speaker switch according to the present invention operates as an external power source or a battery, And extracts the electric energy from the high-frequency signal and operates.
To this end, the non-power speaker switch according to the present invention eliminates a DC power adapter for converting an external AC power source to a DC power source in the components of a conventional external power speaker switch, A rectifier, a charging circuit, and a Li-Polymer battery for extracting electricity from the battery.
According to the present invention, it is possible to solve the difficulty of supplying power to the speaker switch by connecting the speaker switch to the surrounding power line when the speaker switch is additionally installed in the whole-body broadcasting system. Accordingly, The cost of converting to a broadcasting system can also be reduced compared to a conventional external power speaker switch.
In addition, since a public address system installed in an outdoor amusement park or an outdoor sporting venue often does not have a separate power source in the periphery, it is possible to overcome the limitation that the conventional external power speaker switch can not be used.

Figure 112016026677953-pat00001

Description

[0001] Powerless speaker switches for public address systems [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powerless speaker switch added to a public address system, and more particularly, to a powerless speaker switch which is installed in a broadcasting line of a public address system, The speaker switch of the present invention operates in the same manner as that of the conventional speaker switch except that the speaker switch of the non-power speaker switch according to the present invention operates as an external power source or a battery, And extracts the electric energy from the high-frequency signal and operates.

The Public Address System can be used for large-scale buildings such as schools, apartments, department stores, shopping malls, and office buildings, and audio information such as music, announcements and emergency broadcasts in a wide area such as an amusement park, a ski resort, It is a broadcasting system that can be transmitted only to the user.

In order to convert an old public hall broadcasting system, which is composed of a single broadcasting line and a single audio power amplifier, into an advanced public hall broadcasting system capable of group broadcasting, a new broadcasting line is required for each group and a relatively expensive relay The need to add groups or multiple audio power amplifiers necessitates a lot of remodeling costs, effort, and working time.

Accordingly, in Korean Patent No. 10-1605661 entitled " Speaker Switch and Controller Added to Public Address System ", an audio signal transmitted to the termination speaker is connected to an input terminal of a plurality of termination speakers, which are components of a public address system, And a controller for controlling the speaker switches individually or in units of groups is additionally provided in the central control device so that the speaker switches can be connected to the center speaker through the existing broadcasting line already installed between the central control equipment and the end speakers. Which is physically impossible to group broadcast, by converting a control signal for controlling an entire public broadcasting system into an advanced public broadcasting system capable of group broadcasting.

However, since the speaker switch is an electric circuit operated by a control signal transmitted through a broadcasting line, electric energy (power source) is inevitably required. Thus, a conventional speaker switch can supply electric energy from an external power source or an internal battery .

Therefore, the conventional external power speaker switch must be connected to an external power source in the vicinity of the terminating speaker separately from the connection to the broadcasting line to which the speaker switch is attached. This is a very large restriction.

In particular, in a public address system installed in an outdoor amusement park or an outdoor sporting venue, there is often no external power source in the surroundings. In this case, it is impossible to install a conventional external power speaker switch.

Accordingly, it is necessary to develop a non-power speaker switch that does not operate as an external power source or an internal battery while performing the function of an external power speaker switch disclosed in Korean Patent No. 10-1605661.

For this purpose, in the present invention, an energy harvesting method (energy harvesting method) for converting (or harvesting) the energy of a form (wind, hydraulic, vibration, light, heat, electromagnetic wave, etc.) the energy harvesting technique is used to extract the electric energy required from the speaker switch from the control signal transmitted through the broadcast line on which the speaker switch is additionally mounted.

Korean Registered Patent No. 10-1605661 (published on March 16, 2016)

none.

In order to perform the function of a speaker switch added to a public address system disclosed in Korean Patent Registration No. 10-1605661, when the speaker switch is additionally installed, It is possible to reduce the difficulty of supplying power (electric energy) to the switch, thereby reducing the cost of converting an old public hall broadcasting system, which is physically impossible for group broadcasting, to an advanced public hall broadcasting system capable of group broadcasting.

In addition, since the public address broadcasting system installed in the outdoor amusement park or outdoor sports venue often has no external power source in the surroundings, it is possible to overcome the limitation that the conventional external power speaker switch can not be used.

According to an aspect of the present invention, there is provided a non-powered speaker switch including a relay switch, a band-pass filter, a demodulator, a micro-controller unit (MCU) , A dummy load, a dual in-line package (DIP) switch, a DC power adapter, DC power to convert external AC power to DC power A transformer for lowering the high-voltage audio signal and the control signal to a low voltage in order to remove the adapter and extract electrical energy from the control signal of the speaker switch, a rectifier for extracting DC power from the high- a rectifier, a lithium-polymer battery for storing the extracted DC power, an insulator for charging the lithium polymer battery with DC power, And additionally includes a charging circuit.

The non-power speaker switch added to the public address broadcasting system according to the present invention has the following effects.

First, since the conventional external power speaker switch is additionally installed in the public address system, it is possible to solve the difficulty of separately connecting the power source, so that the non-power speaker switch according to the present invention can easily be installed or applied.

Second, since the process of connecting the external power line is eliminated in the installation work and the material cost is reduced, the cost of converting to the public hall broadcasting system capable of group broadcasting can be reduced.

Thirdly, even if a power supply line is not installed in the transmission area of the public address broadcasting system and thus the conventional external power speaker switch can not be applied, the non-power speaker switch according to the present invention can be applied.

1 is a diagram showing a configuration of a conventional external power speaker switch.
2 is a view showing an embodiment of a public address broadcasting system to which a conventional external power speaker switch is added
3 is a block diagram of a non-powered speaker switch according to the present invention.
4 is a view showing an embodiment of a public address broadcasting system to which a non-powered speaker switch according to the present invention is added;
5 is a view showing one embodiment of a product shape of the electroless speaker switch according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is to be understood that the term "comprises" or "having" in the present application does not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a non-power speaker switch added to a public address system according to the present invention will be described in detail with reference to the accompanying drawings.

The conventional external power speaker switch, which is added to a public address broadcasting system composed of a single broadcasting line and an audio power amplifier basically, is a device capable of converting an old public hall broadcasting system, which is physically impossible to group broadcasting, Korean Patent No. 10-1605661 entitled "Speaker Switch and Controller Added to Whole Public Broadcasting System ".

FIG. 1 is a view showing a configuration of a conventional external power speaker switch added to a front-end broadcast system, and the components and operation principle of an external power speaker switch are described in detail.

A conventional external powered speaker switch 102, which is additionally mounted at the input of the terminating speaker 101, includes a relay switch 103, a bandpass filter 104, an amplitude shift keying (ASK) demodulator 105, a microcontroller ) 106, the pseudo load 107, the two DIP switches 108a, 108b, and the DC power adapter 109 are connected as shown in FIG.

1, an audio signal and a control signal 111 transmitted through a broadcasting line 110 of a public address system, which has already been installed in the existing public broadcasting system, are transmitted to the external power speaker switch 102 And the control signal includes digital information modulated by the amplitude shift keying (ASK).

The audio signal and the control signal 111 transmitted to the conventional external power speaker switch 102 are filtered through the band pass filter 104 passing the carrier signal frequency f C of the control signal, Only the control signal 112 modulated by the method ASK is passed.

The control signal 112 modulated by the amplitude shift keying system ASK is transmitted to the ASK demodulator 105 through the ASK demodulator 105 to generate a digital signal 113 including ID / (Demodulated), and the digital signal 113 is input to the microcontroller (MCU)

The microcontroller (MCU) 106 receives the ID / ID for each individual / group and the ID / ID for each individual / group included in the input digital signal 113 through the two DIP switches 108a and 108b. And supplies the relay operation signal 114 for operating the relay switch 103 to the relay switch 103 in accordance with the instruction information included in the input digital signal 113 if the two pieces of information are the same.

According to the relay operation signal 114, the relay switch 103 connects the audio signal transmitted through the broadcasting line 110 of the public address system to the terminating loudspeaker 101 and broadcasts it to the transmission area or the pseudo load 107 ) To terminate the audio signal so that it can not be broadcast in the transmission area.

Here, a method of presetting an ID for each individual / group in the microcontroller (MCU) 106 is to set two 8-pin DIP switches 108a and 108b connected to the microcontroller (MCU) (ID) 8 bits 108b and a group-specific ID (ID) 8 bits 108a. The setting of the DIP switches 108a and 108b is performed by setting the external speaker switch 102 to the terminal speaker 101 in accordance with the previously set ID / As shown in FIG.

The DC power supply 115 necessary for the band-pass filter 104, the amplitude shift keying (ASK) demodulator 105 and the microcontroller (MCU) 106 is normally provided in the transmission area in which the terminating loudspeaker 101 is installed The external AC power source 116 is converted into a DC power source 115 through a DC power adapter 109 and used.

Therefore, the conventional external power speaker switch 102 disclosed in Korean Patent No. 10-1605661 must be connected to the external power source 116 in order to drive the components of the internal electric circuit.

FIG. 2 is a diagram illustrating an embodiment of a public address broadcast system to which a conventional external power speaker switch is added, and is an example of an old public hall broadcast system composed of a single broadcast line and an audio power amplifier.

2, the conventional external power speaker switch 201 is additionally mounted at an input end of a plurality of termination speakers 203 in a voice information transmitting area 202 of a public address system, The controller 204 for controlling the switch 201 is additionally installed in the central control equipment 205 of the public address system.

In consideration of the position of the terminal speaker in which the external power speaker switch is additionally mounted in the dispensing area, each external power speaker switch has a 8-bit group ID and an 8-bit individual ID, And has a total of 16 bits of speaker switch ID (ID), so that a total of 65,536 terminated speakers can be distinguished and controlled by IDs, respectively.

The audio signals transmitted to the plurality of end speakers belonging to the designated group may be concurrently connected or disconnected using the group IDs.

For example, if you want to turn on or off only the fourth terminal speaker 207 of the group D (fourth layer / 4 area) 206d, you need to turn on / off the external power speaker switch 208 connected to that terminating speaker 207 When the ID and the individual (speaker) control command are transmitted as the control signal, the audio signal transmitted to the terminal speaker 207 can be connected or disconnected.

If it is desired to turn on / off all of the plurality of termination speakers 209a, 209b, 209c and 209d belonging to the group C (third / third region) 206c, When a control signal is transmitted as a control signal to each group speaker (210a, 210b, 210c, 210d), a group ID (ID), a group ID 209b, 209c, and 209d connected to the group C (third layer / third region) 206c.

In addition, the terminating loudspeakers 211a and 211b in a space, such as a central control room, a lobby, a security room, and the like, which do not matter even if voice information is always broadcast, do not additionally include a conventional external power speaker switch, And the audio signal is transmitted to the end speakers 211a and 211b.

In order to control the conventional external power speaker switch 201, a control signal including an ID and a command for each individual / group is transmitted to each speaker switch 201 through a different new transmission line, The effect of applying the external power speaker switch 201 can not be expected.

Therefore, the conventional external power speaker switch 201 outputs the control signal including the ID and the command for each individual / group generated by the controller 204 to the broadcasting line 212 of the existing public broadcasting system So that it can be received.

Since the audio signal having the frequency of 20 Hz to 20 kHz is transmitted to the broadcasting line 212 of the public address system that has already been installed, the control signal using the same broadcasting line 212 can not interfere with the audio signal A carrier signal having a frequency of 20 kHz or more is used.

In addition, since the terminal speaker 203 must be connected or disconnected before the audio signal is broadcast through the terminal speaker 203 for the group broadcast to be broadcast only to the specific groups 206a, 206b, 206c, and 206d, The control signal of the speaker switch 201 is transmitted 213 to the conventional external power speaker switch 201 through the broadcast line 212 of the public address system before the audio signal.

As described above, since the conventional external power speaker switch 201 receives the control signal through the broadcasting line 212 of the existing public broadcasting system, the controller 204, which generates the control signal, And is connected to the audio control unit 216 together with other sound source generating units of the fire receiver 214 or the microphone 215 so that the audio power amplifier 217 and the transformer 217, And is input to the broadcast line 212 of the public address system, which is installed in the existing system through the network interface 218.

In Korean Patent No. 10-1605661, an amplitude shift method (ASK) is used as an example of a digital modulation method for loading a digital signal representing an ID and an instruction for each individual / group on a carrier signal. However, Various digital modulation methods such as frequency shift keying (FSK), phase shift keying (PSK), and quadrature amplitude modulation (QAM) can be applied.

1, the conventional external power speaker switch 201 must be connected to the external power line 219 in order to drive a plurality of internal electric circuit components.

However, the operation of connecting the conventional external power speaker switch to the surrounding external power source line requires a process other than the addition of the external power speaker switch to the broadcasting line of the public address broadcasting system. As work difficulties arise as additional construction material is also required, the cost of converting to a public address broadcasting system capable of group broadcasting increases.

In addition, since a public address system installed in an outdoor amusement park or an outdoor sporting venue often has no external power line in the vicinity, a conventional external power speaker switch can not be applied in such a case.

Therefore, it is necessary to develop a non-power speaker switch that does not operate as an external power source or an internal battery while performing the function of an external power speaker switch added to the public address broadcasting system disclosed in Korean Patent No. 10-1605661.

FIG. 3 is a view illustrating a configuration of a non-powered speaker switch according to the present invention. The components and operation principle of the non-powered speaker switch will be described in detail.

Since the non-power speaker switch according to the present invention basically performs a function of connecting or disconnecting an audio signal transmitted to a terminating speaker in addition to a front channel broadcasting system, the external power speaker switch disclosed in Korean Patent No. 10-1605661 Among the plurality of components provided, the components for performing the basic functions are equally provided.

That is, the non-power speaker switch 302 according to the present invention, which is additionally mounted at the input end of the terminating speaker 301, includes a relay switch 303, a band-pass filter 304, an amplitude shift keying (ASK) A demodulator 305, a microcontroller (MCU) 306, a pseudo load 307 and two DIP switches 308a and 308b are connected as shown in FIG.

However, the DC power adapter included in the conventional external power speaker switch is an apparatus that converts external AC power to DC power and supplies the power to each component requiring power, and is not necessary in the electroless speaker switch according to the present invention Removed.

The electric energy is extracted from the audio signal 310 and the high frequency signal 312 included in the control signal from the control signal 311 transmitted through the broadcasting line 309 of the existing public address system, The DC power supply 313 is supplied to each component requiring power.

To this end, an energy harvesting device 318 comprising a transformer 314, a rectifier 315, a charging circuit 316 and a lithium-polymer battery 317 is additionally provided.

Like the conventional external power speaker switch, the audio signal 310 and the control signal 311 temporally arrive at the non-powered speaker switch 302 at first, and the control signal 311 is again supplied to the non- An amplitude shift keying (ASK) modulation signal 319 including digital information for controlling the switch 302 and a high frequency signal 312 as a source for extracting electrical energy.

At this time, the high-frequency signal 312 is a source of electric energy for driving the components of the electric circuit constituted in the electroless speaker switch 302 according to the present invention, It is possible to periodically receive a signal from the controller of the public address system (not shown) to the termination speaker (not shown) regardless of the audio signal 310 or the amplitude shift keying (ASK) modulation signal 319 to charge the polymer battery 317 with electrical energy and use it at any time 301 is provided to the non-powered speaker switch 302 which is added to the front end of the speaker switch 302.

The audio signal 310 and the control signal 311 are stepped up to a high voltage (typically 100 V) to be broadcasted to a plurality of terminal speakers 301, Lt; / RTI >

Therefore, the non-powered speaker switch 302 according to the present invention reduces the high-voltage control signal 311 to a low voltage through the transformer 314 before performing the energy conversion.

The high frequency signal 312 included in the decompressed control signal 311 is input to the rectifier 315 and converted into DC power and the extracted DC power is supplied to the lithium polymer battery 317 by the charging circuit 316 And performs a charging operation to be stored.

A DC power supply (not shown) for the bandpass filter 304, the amplitude shift keying (ASK) demodulator 305, and the microcontroller (MCU) 306 for performing the basic functions of the electroless speaker switch 302 according to the present invention, A discharging operation is performed to supply the discharging electrode 313.

A relay switch 303, a bandpass filter 304, an amplitude shift keying (ASK) demodulator 305, a microcontroller (MCU) 306, a pseudo load 307, two DIP The operation principle of the switches 308a and 308b is the same as that of the external power speaker switch disclosed in Korean Patent No. 10-1605661.

That is, the audio signal 310 and the control signal 311 transmitted to the non-powered speaker switch 302 according to the present invention are transmitted to the band pass filter 304 passing the carrier signal frequency f c of the control signal 311 The audio signal 310 and the high frequency signal 312 are filtered while passing only the signal 320 modulated by the amplitude shift method ASK.

The signal 320 modulated by the amplitude shift keying system ASK is converted into a digital signal 321 including ID / command ID information and command information through an amplitude shift keying (ASK) demodulator 305 (Demodulated), and the digital signal 321 is input to the microcontroller (MCU)

The microcontroller (MCU) 306 receives the ID / ID for each individual / group and the ID / ID for each individual / group included in the input digital signal 321 through the two DIP switches 308a and 308b. And supplies the relay switch 303 with the relay operation signal 322 for operating the relay switch 303 according to the instruction information included in the input digital signal 321 if the two pieces of information are the same.

In accordance with the relay operation signal 322, the relay switch 303 connects the audio signal 310, which is transmitted through the broadcasting line 309 of the public address system, to the terminal speaker 301 and broadcasts it to the transmission area, And connects to the load 307 to terminate the audio signal 310, thereby preventing broadcasting in the transmission area.

A method of previously setting an ID for each individual / group in the microcontroller (MCU) 306 includes the steps of setting two 8-pin DIP switches 308a and 308b connected to the microcontroller (MCU) (ID) 8 bits (308b) and group ID (ID) 8 bits (308a). The setting of the DIP switches 308a and 308b is performed by connecting the corresponding non-powered speaker switch 302 to the termination speaker 301 in accordance with the position / In addition, the installation is performed together.

FIG. 4 is a diagram showing an embodiment of a public address broadcasting system with a non-power speaker switch according to the present invention, added to an old-fashioned public hall broadcasting system composed of a single broadcasting line and an audio power amplifier.

As described above, since the non-power speaker switch 401 according to the present invention has the same function and operating principle as the conventional external power speaker switch added to the front cover broadcasting system disclosed in Korean Patent No. 10-1605661, The speaker switch 401 according to the present invention does not require the external power source 402, so that the external power source 402 can be used as the external power source speaker 402, Do not connect with lines.

As described above, according to the present invention, the non-power speaker switch 401 is controlled by a plurality of internal components for energy harvesting, such that the control signal transmitted through the broadcasting line 403, (406) the electric energy required by the non-powered speaker switch (401) according to the present invention from the high frequency signal (405)

4, according to the basic function of the electroless speaker switch 401 according to the present invention, the termination speaker 408 must be connected or disconnected before the audio signal 407 is broadcast through the terminating speaker 408 The control signal 404 of the non-powered speaker switch 401 is transferred to the non-powered speaker switch 401 via the broadcast line 403 of the public address system before the audio signal 407 in time.

The high frequency signal 405 of the control signal 407 may also be used by the non-power speaker switch 401 according to the present invention to control the internal electrical circuit components < RTI ID = 0.0 > Since the electrical energy for driving the digital modulated signal 409 must be harvested 406 first, it is transmitted to the electroless speaker switch 401 through the broadcast line 403 of the public address system before the digital modulated signal 409 in time.

As described above, in order to charge the electric energy into the lithium-polymer battery included in the energy harvesting device of the electroless speaker switch 401 according to the present invention and to use the electric energy at any time, Is supplied to the non-powered speaker switch 401, which is added to the front end of the termination speaker 408 from the controller of the public address system periodically, regardless of the amplitude shift keying (ASK) modulation signal 409.

5 is a view showing an embodiment of a product shape of a non-powered speaker switch according to the present invention.

Basically, the non-power speaker switch 501 according to the present invention has the same shape and components as the conventional external power speaker switch disclosed in Korean Patent No. 10-1605661, Since it extracts electric energy, it does not have power line for connecting with external power source.

As shown in FIG. 5A, the non-powered speaker switch 501 according to the present invention is additionally mounted at an input terminal 503 of the end speaker 502 of the whole-body broadcast system, Frequency signal for extracting the control signal of the non-powered speaker switch 501 according to the present invention, that is, the digital information for controlling the non-powered speaker switch 501, and the necessary electric energy, through the line 504 Receive.

There are also two DIP switches 505a and 505b for setting ID / IDs of the non-powered speaker switch 1001.

5B shows an example in which the electroless speaker switch 506 according to the present invention is manufactured as a terminal speaker integral type.

Since the components and the operation principle thereof are the same as those of the removable electroluminescent speaker switch 501 shown in Fig. 5A, except that the same housing as that of the terminal speaker 507 is used, An input line 509 connected to the line 508 for receiving both an audio signal and a control signal (digital information, high frequency signal), and two DIP switches 510a and 510b for setting an ID for each individual / .

The present invention has been described with reference to the preferred embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

-

Claims (3)

delete A speaker switch is additionally mounted on the input terminal of the end speaker, which is a component of a public address system.

In accordance with a control signal of the speaker switch which is transmitted through a broadcasting line of an existing public address broadcasting system without a separate control signal line

The audio signal transmitted from the central control equipment is supplied to the terminal speaker and is broadcast to the transmission area or the audio signal is supplied to the dummy load included in the speaker switch so that the audio signal path is not broadcast to the transmission area To choose

In a speaker switch having a function,

The electric energy is extracted from the high-frequency signal included in the control signal of the speaker switch, which is transmitted separately from the audio signal through the broadcasting line of the public address system

The extracted electric energy is used as a power source of an electric circuit for operating or controlling the speaker switch

Without external power or internal battery

A speaker switch
The speaker switch according to claim 2, wherein the speaker switch

A relay switch, a band-pass filter, a demodulator, a micro-controller unit (MCU), a dummy load, a dual in-line package (DIP) In a component of a conventional external powered speaker switch that includes a DC power adapter, the DC power adapter that converts external AC power to DC power is removed,

In order to extract electric energy from the control signal of the speaker switch transmitted through the broadcasting line,

A transformer for lowering a high voltage audio signal and a control signal to a low voltage,

A rectifier for extracting DC power from the high-frequency signal included in the control signal,

A Li-Polymer battery that stores extracted DC power,

A charging circuit for charging the lithium-polymer battery with DC power,

Further comprising a speaker switch
KR1020160033185A 2015-11-06 2016-03-21 Powerless speaker switches for public address system KR101626271B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160033185A KR101626271B1 (en) 2016-03-21 2016-03-21 Powerless speaker switches for public address system
PCT/KR2016/009633 WO2017078262A1 (en) 2015-11-06 2016-08-30 Speaker switch and controller added to public address system, and powerless speaker switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160033185A KR101626271B1 (en) 2016-03-21 2016-03-21 Powerless speaker switches for public address system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020160063779A Division KR20170109992A (en) 2016-05-25 2016-05-25 Powerless speaker switches for public address system

Publications (1)

Publication Number Publication Date
KR101626271B1 true KR101626271B1 (en) 2016-06-01

Family

ID=56138467

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160033185A KR101626271B1 (en) 2015-11-06 2016-03-21 Powerless speaker switches for public address system

Country Status (1)

Country Link
KR (1) KR101626271B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101949674B1 (en) 2017-09-08 2019-02-19 주식회사 사라콤 a broadcasting system and whistle with self-diagnosis function

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101293244B1 (en) * 2012-12-28 2013-08-09 주식회사 윈미디텍 Public address system and method for reducing electric power consumption
KR101598418B1 (en) * 2015-09-01 2016-02-29 (주)디라직 Electro-Acoustic Transducing Apparatus for Health care
KR101605661B1 (en) 2015-11-06 2016-03-23 주식회사 에스트론 Speaker switches and controller attached to public address system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101293244B1 (en) * 2012-12-28 2013-08-09 주식회사 윈미디텍 Public address system and method for reducing electric power consumption
KR101598418B1 (en) * 2015-09-01 2016-02-29 (주)디라직 Electro-Acoustic Transducing Apparatus for Health care
KR101605661B1 (en) 2015-11-06 2016-03-23 주식회사 에스트론 Speaker switches and controller attached to public address system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
없음.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101949674B1 (en) 2017-09-08 2019-02-19 주식회사 사라콤 a broadcasting system and whistle with self-diagnosis function

Similar Documents

Publication Publication Date Title
KR101928561B1 (en) IP speaker system equipped with a rechargeable power supply and amplifier using POE type
KR101626271B1 (en) Powerless speaker switches for public address system
JP4847533B2 (en) Adaptive impedance for LNB power supply output depending on communication mode / protocol
US20040072598A1 (en) Signal routing for reduced power consumption in a conferencing system
CN101770686A (en) Audio device, AV system having the audio device, and method to control the audio device
KR101605661B1 (en) Speaker switches and controller attached to public address system
KR20170109992A (en) Powerless speaker switches for public address system
CN106507230B (en) A kind of audio amplifier
US11665492B2 (en) In-ceiling loudspeaker assembly with digital interface
CN105100552A (en) Circuitry for a commentator and/or simultaneous translator system, operating unit and commentator and/or simultaneous translator system
CN205809857U (en) Audio frequency instructor in broadcasting's equipment
KR20170054200A (en) Speaker switches and controller attached to public address system
CN208112861U (en) Bluetooth audio frequency system and nested type bluetooth headset with the system
CN106937208A (en) A kind of Bluetooth speaker system
US7236600B1 (en) Transmission of power and/or signalling between an audio distribution unit and a plurality of remote audio transducers
CN205320264U (en) Bluetooth sound system
CN106471434B (en) Host interface, accessory interface and the method for being connect between managing main frame interface and fittings equipment
CN207602220U (en) A kind of long-distance intelligent audio system switching system
US1772165A (en) Multiplex broadcast system
CN105307085B (en) A kind of chargeable audio amplification device
KR101760281B1 (en) Wireless Communication Device Having Earth Structure
CN104901709A (en) Radio system having mobile terminal and peripheral equipment, and radio system control method
CN214205546U (en) Sound amplification system based on POE power supply and DANTE
CN205232435U (en) Wireless surround speaker is used to cinema
KR101471484B1 (en) Disital analog power amp applied sound network transfer system and operating method thereof

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
A107 Divisional application of patent
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190314

Year of fee payment: 4