KR101683417B1 - Public address system and method for check in public address system - Google Patents
Public address system and method for check in public address system Download PDFInfo
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- KR101683417B1 KR101683417B1 KR1020160040110A KR20160040110A KR101683417B1 KR 101683417 B1 KR101683417 B1 KR 101683417B1 KR 1020160040110 A KR1020160040110 A KR 1020160040110A KR 20160040110 A KR20160040110 A KR 20160040110A KR 101683417 B1 KR101683417 B1 KR 101683417B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- 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
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- 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
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
- H04R29/002—Loudspeaker arrays
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Abstract
The present invention can detect a speaker or a line in which a failure has occurred among a plurality of speakers constituting a public address broadcasting system for outputting a public address broadcast in a plurality of zones and lines connecting the speakers, And more particularly, to a public hall broadcast system and a public hall broadcast system check method.
Description
More particularly, the present invention relates to a method and apparatus for detecting the presence or absence of an abnormality in a line or a speaker of a line or a speaker of a public address system, The present invention relates to a public address system and a public address system check method capable of remotely controlling the public address system.
Generally, public address broadcasting system is a system designed to perform broadcasting for a whole area, a floor, and a district in a desired area in a single building or a neighboring building such as a school, an enterprise, a building, an apartment, or a hotel.
Such a public address broadcasting system has a transmitting apparatus installed in a central broadcasting room, and a receiving apparatus including a liquid crystal or a speaker is installed in a broadcasting reception room such as a conference room, a classroom or a room, .
The Public Address System is very useful when conducting tests inside the school, informing at hospitals and marts, and informing the companies of the messages. In addition, the importance of emergency broadcasting is very high because it can minimize the loss of life in case of fire or terrorism.
In a public address system, a plurality of loudspeakers are installed in various areas where all-out broadcasts are output, and these loudspeakers are connected through a line. In the case where an error occurs in some speakers or some lines, a public address may not be output.
In the case where a problem occurs in the public address system, at least two or more persons must be input to find the problematic part, and it is difficult to detect which part of the plurality of speakers and the line has a problem.
Therefore, there is a need for a method for detecting a problematic portion with a small number of personnel.
The main object of the present invention is to detect a speaker or a line in which a failure has occurred among a plurality of speakers constituting a public address broadcasting system for outputting a public address in a plurality of zones and lines connecting the speakers, And to provide a method for checking all-over-the-air broadcasting systems.
A public address broadcasting system according to an embodiment of the present invention is a public address broadcasting system capable of outputting public address broadcasts to a plurality of broadcast output areas, comprising: a broadcast output unit comprising a plurality of speakers installed in each of the broadcast output zones; A main broadcasting unit for transmitting the public address broadcast to the broadcast output unit; And a mobile terminal for communicating with the main broadcasting unit and sensing sound output from the speaker; Wherein the main broadcasting unit discriminates an abnormality on the broadcasting circuit by impedance of a broadcasting circuit composed of the main broadcasting unit, the broadcasting output unit, and the line connecting the main broadcasting unit and the broadcasting output unit, May measure the sound pressure of the sound output from the broadcast output unit and remotely control the main broadcast unit so that the measured sound pressure becomes a predetermined reference sound pressure.
In the present invention, the main broadcasting unit may include: a sound source reproducing unit for generating a sound source required for the public address broadcasting; An amplifier for amplifying the sound source reproduced by the sound source reproducer; A speaker selector for turning on and off the broadcasting output unit of the broadcasting output zone to output the amplified sound source; A main controller for controlling the main broadcast section or the broadcast output section and determining whether there is an abnormality on the broadcast circuit through an impedance of the broadcast circuit; A communication unit for transmitting and receiving data to and from the mobile terminal; . ≪ / RTI >
In the present invention, the main controller may include: an impedance calculating unit for calculating an impedance composite value of the broadcast circuit by summing the impedances of the speakers installed in the broadcast output zone; An impedance measuring unit for measuring an impedance of the speakers installed in the broadcast output zone by sending a current to the line to obtain impedance measurements of the broadcast circuit; And an abnormality determination unit for comparing the impedance composition value and the impedance measurement value to determine whether there is an abnormality on the broadcast circuit. . ≪ / RTI >
In the present invention, the abnormality determination unit compares the impedance composition value and the impedance measurement value, and when the difference between the impedance composition value and the impedance measurement value exceeds a predetermined range, .
In the present invention, the main broadcasting unit may further include a storage unit for storing the impedance composite value.
In the present invention, the main controller may further include an impedance search unit for searching whether the impedance composition value is stored in the storage unit, and the impedance search unit may be configured to determine whether the impedance composition value is stored in the storage unit before the impedance calculation unit calculates the impedance composition value. Wherein the impedance comparison unit does not calculate the impedance composite value when the impedance composite value is found and the impedance comparison unit does not calculate the impedance composite value stored in the impedance measurement unit, And the impedance composition value retrieved by the impedance retrieving unit to determine whether there is an abnormality on the broadcast circuit.
In the present invention, the mobile terminal includes: a microphone for sensing the sound output from the speaker and converting the sound into an electric signal; A communication unit for transmitting a test tone transmission request signal to the main broadcasting unit so that the main broadcasting unit outputs test tones to the speakers; And a control unit for generating the transmission request signal according to a user's input, comparing the measured sound pressure of the test tone monitored by the microphone with the reference sound pressure, and outputting, by the main broadcasting unit, A terminal control unit for generating a remote control signal for increasing or decreasing the sound pressure of the test tone; And the communication unit may transmit the remote control signal to the main broadcasting unit.
In the present invention, the terminal control unit controls the amplifier to increase the sound pressure of the test tone output from the broadcast output unit when the measured sound pressure is less than the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure And controls the amplifier so that the sound pressure of the test tone output from the broadcast output unit decreases when the measured sound pressure exceeds the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure And generate a second remote control signal.
In the present invention, the microphone may sense noise in the broadcast output area provided with the broadcast output unit according to the input of the user, the terminal control unit measures the sound pressure of the noise, It can be larger than the sound pressure.
In the present invention, the main broadcasting unit may control the input level of the amplifier so that the sound pressure of the test tone output from the broadcast output unit increases or decreases according to the remote control signal when the remote control signal is received .
In the present invention, when it is determined that the main broadcast section has an error on the broadcast circuit, the mobile terminal can detect the failure of the line or the speaker by sensing the sound output from each of the speakers have.
In the present invention, the terminal control unit may generate the test tone transmission request signal when it is determined by the main broadcasting unit that there is an abnormality on the broadcasting circuit, If it is determined that the test tone is not output from the n-th speaker, it is determined whether the test tone is generated by the n + 1-th speaker neighboring the n-th speaker, Tone, and if the test tone is output from the (n + 1) th speaker, it is determined that the n-th speaker is abnormal. If the test tone is not output from the (n + 1) it can be determined that there is an abnormality in the line between the (n-1) th speaker and the nth speaker.
If the test tone is output from the n-th speaker, the terminal control unit may detect whether a test tone is generated in the (n + 1) -th speaker adjacent to the n-th speaker, If the test tone is not output from the first speaker, it is detected whether the test tone is generated from the (n + 2) th speaker, and if the test tone is output from the (n + If the test tone is not output from the (n + 2) th speaker, it can be determined that there is an abnormality in the line between the nth speaker and the (n + 1) th speaker.
In the present invention, when the test tone in the first speaker with n = 1 is not detected, the terminal control unit determines that there is an abnormality in the line between the first speaker or the first speaker and the main broadcasting unit can do.
In the present invention, the terminal control unit may include: a signal generator for generating a test tone transmission control signal for causing the main broadcasting unit to output the test tone from the speaker installed in the broadcast output zone, according to the input of the user; A reference sound pressure setting unit for setting the reference sound pressure by an input of the user; A sound pressure measuring unit for measuring the sound pressure of the test tone by sensing the test tone generated by the microphone in the speaker; A sound pressure comparator that compares the measured sound pressure and the reference sound pressure and generates a remote control signal to increase or decrease a sound pressure of the test tone outputted from the broadcast output unit according to a result of the comparison; A test tone detector for determining whether the test tone is generated in the speaker according to whether the microphone senses the test tone generated in the speaker; And if the test tone does not occur in the nth speaker and the test tone does not occur in the (n + 1) th speaker, it is determined that the line between the (n-1) th speaker and the nth speaker is abnormal, If the test tone is not generated in the (n + 1) th speaker and the test tone occurs in the (n + 1) th speaker, it is determined that the n-th speaker is abnormal; . ≪ / RTI >
A method for checking a public address system according to an exemplary embodiment of the present invention is a public address system checking method capable of outputting a public address to a plurality of broadcast output zones, A broadcast output unit comprising a plurality of speakers installed in each of the output zones; A main broadcasting unit for transmitting the public address broadcast to the broadcast output unit; And a mobile terminal for communicating with the main broadcasting unit and sensing sound output from the speaker; Wherein the overall broadcasting system checking method comprises the steps of determining whether there is an abnormality on the broadcasting circuit through the impedance of the broadcasting circuit comprising the main broadcasting section, the broadcasting output section, and the line connecting the main broadcasting section and the broadcasting output section step; Determining which line or which speaker of the line or the plurality of speakers has a failure by sensing the sound output from each of the speakers; Measuring a sound pressure of the sound outputted from the broadcast output unit and setting an output level so that the measured sound pressure is a predetermined reference sound pressure when there is no abnormality on the broadcasting circuit; Lt; RTI ID = 0.0 >
In the present invention, the step of setting the output level may include: setting the reference sound pressure; Outputting a test tone from the speaker by remote control of the main broadcasting unit by the mobile terminal; Measuring a sound pressure of the test tone to set a measured sound pressure of the test tone; Comparing the reference sound pressure and the measured sound pressure; Generating a remote control signal for causing the main broadcasting unit to increase or decrease a sound pressure of the test tone outputted from the broadcast output unit according to the comparison result; And outputting the test tone whose sound pressure is increased or decreased according to the remote control signal; . ≪ / RTI >
According to an embodiment of the present invention, in a public address broadcasting system having a plurality of speakers and outputting a public address to a plurality of districts, a speaker or a line in which a fault has occurred can be detected from among the plurality of speakers and the lines connecting them have.
1 is a block diagram schematically showing a public address broadcasting system according to an embodiment of the present invention.
FIG. 2 is a block diagram schematically showing an embodiment of the main controller shown in FIG. 1. FIG.
3 is a block diagram schematically showing an embodiment of the mobile terminal shown in FIG.
4 is a block diagram schematically showing an embodiment of the terminal control unit shown in FIG.
FIG. 5 is a flowchart schematically illustrating a method for determining an error in a PBC system according to an exemplary embodiment of the present invention.
FIG. 6 is a flowchart schematically illustrating a method of determining whether a line or a speaker of a public address broadcast system shown in FIG. 5 has a failure.
FIG. 7 is a flowchart schematically showing a fault discrimination method including a volume control circuit in the method of discriminating whether a line or a speaker of the whole-body broadcasting system shown in FIG. 6 has a fault.
FIG. 8 is a flowchart schematically showing a method of setting an output level of the whole-body broadcast system shown in FIG.
While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not to be limited to the specific embodiments, but includes all changes, equivalents, and alternatives falling within the spirit and scope of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily blurred. Also, numbers used in the description process of the present invention (e.g., first second, etc.) may be identifier signals for distinguishing one component from another.
Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, May be connected or connected via another component in the middle, as long as there is no description to be made.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
FIG. 1 is a configuration diagram schematically showing a public address broadcasting system according to an embodiment of the present invention, FIG. 2 is a configuration diagram schematically showing an embodiment of the main controller shown in FIG. 1, 1 is a block diagram schematically showing an embodiment of a mobile terminal shown in FIG.
Referring to FIG. 1, a
The
Also, the
1, the
The sound
The
The
The
The
More specifically, the
The
The
More specifically, in the case of the impedance composite value, the result is calculated on the basis of the impedance of each of the speakers installed on the broadcasting output zone as a series connection, but the impedance measurement value is a value measured while the speakers are connected by the line The impedance value of the line is included. Therefore, when there is no abnormality in the broadcast circuit, the impedance measurement value and the impedance composition value may be different from each other by an impedance value of the line. However, when there is an abnormality on the broadcasting circuit, for example, when there is a disconnection of a line connecting speakers or a failure of a part of the speakers, the impedance of the abnormal line or speaker is not measured, And the impedance composite value may be equal to or greater than an impedance value of a line connecting the speakers. The predetermined range may be the sum of the impedances of the lines connecting the speakers.
Accordingly, the
However, the
FIG. 2 is a block diagram schematically showing an embodiment of the main controller shown in FIG. 1. FIG.
2, the
The
The
The
The
Accordingly, when the impedance composite value is calculated and stored, the
The
The
The
The
A
The
The
The
The
The
The
In detail, when it is determined that there is an abnormality on the broadcasting circuit through the impedance in the
The
A plurality of speakers installed in the broadcasting output area A1 are connected in series and the speaker closest to the
The
The
If it is determined that the nth speaker does not output a test tone, it is detected whether a test tone occurs in the (n + 1) th speaker neighboring the nth speaker. That is, if it is determined that the nth speaker does not output the test tone, the
If it is determined that the test tone is output from the (n + 1) th speaker, it may be determined that the n-th speaker is abnormal. That is, since the speakers on one broadcast circuit are connected in series, the test tone is output from the speaker located before the nth speaker, so that no test tone is output from the nth speaker and the test tone is output from the neighboring n + If the test tone occurs, it may be regarded that there is an abnormality in the nth speaker. Accordingly, the
If it is determined that the test tone is not output from the n-th speaker while the test tone is output from the speaker located before the n-th speaker, and if it is determined that the test tone is not outputted from the n + , The
On the other hand, if it is determined that the nth speaker outputs the test tone, the
If it is determined that the test tone is output from the (n + 2) th speaker, the
However, if the test tone is not output from the n + 2th speaker, that is, the test tone is output from the nth speaker, the test tone is not output from the (n + 1) If the test tone is not output, the
In the case where n = 1, that is, in the case where the speaker is the first speaker which is the closest speaker to the
If it is determined that the n-th speaker does not output the test tone, the
On the other hand, when it is determined that there is no abnormality on the broadcasting circuit, the
In detail, when it is determined that there is no abnormality on the broadcasting circuit through the impedance in the
The
A plurality of speakers of the
The
That is, the measured sound pressure is measured by the test tone output request signal generated in the
The reference sound pressure is a target sound pressure of the sound output from the
If there is noise in the broadcast output area, the reference sound pressure can be set in consideration of noise. For example, if there is already sound in the broadcasting output area due to a large number of people, equipment, or sounds in the broadcasting output area, the sound pressure of the public address broadcasting output from the broadcasting output area is higher than the sound pressure of the sound The public address broadcast can be heard well to people in the broadcast output area. Therefore, it is necessary to previously measure the sound pressure of the noise existing before the public address is output in the broadcast output area to the
The
The
After transmitting the first remote control signal, the
When the measured sound pressure is greater than the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure, the
The
In this way, the
4 is a block diagram schematically showing an embodiment of the
4, the
The
The
If the test tone is not generated in the nth speaker and the test tone is not generated in the (n + 1) th speaker, the
More specifically, if the
If the test tone is detected by the
Also, it is determined by the
On the other hand, if it is determined that the nth speaker outputs the test tone, the
If it is determined that the test tone is output from the (n + 2) th speaker, the
However, if the test tone is not output from the n + 2th speaker, that is, the test tone is output from the nth speaker, the test tone is not output from the (n + 1) If the test tone is not output, the
In the case where n = 1, that is, in the case where the speaker is the first speaker which is the speaker closest to the
If it is determined that the test tone is not output from the n-th speaker, the
The reference sound
If there is noise in the broadcast output area, the reference sound pressure can be set in consideration of noise. For example, if there is already sound in the broadcasting output area due to a large number of people, equipment, or sounds in the broadcasting output area, the sound pressure of the public address broadcasting output from the broadcasting output area is higher than the sound pressure of the sound The public address broadcast can be heard well to people in the broadcast output area. Therefore, it is necessary to previously measure the sound pressure of the noise existing before the public address is output in the broadcast output area to the
The sound
The
That is, the
Also, the
The
As described above, the public
Also, the whole
FIG. 5 is a flowchart schematically illustrating a method for determining an error in a PBC system according to an exemplary embodiment of the present invention.
Referring to FIG. 5, a method for distinguishing an all-tube broadcast system error S1000 according to an exemplary embodiment of the present invention includes a
In operation S100, the
Next, the
Then, the
Next, the
FIG. 6 is a flowchart schematically showing a method (S200) for determining whether a line or a speaker of the whole-body broadcasting system shown in FIG. 5 has a failure.
Referring to FIG. 6, in a
Next, if it is determined that the test tone is not output from the n-th speaker, it is detected whether a test tone occurs in the (n + 1) -th speaker neighboring the n-th speaker at step S207. That is, if it is determined that the nth speaker does not output the test tone, the
If it is determined that the test tone is output from the (n + 1) th speaker, it may be determined that the n-th speaker is abnormal (S 208). That is, since the speakers on one broadcast circuit are connected in series, the test tone is output from the speaker located before the nth speaker, so that no test tone is output from the nth speaker and the test tone is output from the neighboring n + If the test tone occurs, it may be regarded that there is an abnormality in the nth speaker. Accordingly, the
If it is determined that the test tone is not output from the n-th speaker while the test tone is output from the speaker located before the n-th speaker, and if it is determined that the test tone is not outputted from the n + , The
On the other hand, if it is determined that the nth speaker outputs the test tone, the
If it is determined that the test tone is output from the (n + 2) th speaker, the
However, if the test tone is not output from the n + 2th speaker, that is, the test tone is output from the nth speaker, the test tone is not output from the (n + 1) If the test tone is not output, the
In the case where n = 1, that is, in the case where the speaker is the first speaker which is the closest speaker to the
FIG. 7 is a flowchart schematically showing a fault discrimination method including a volume control circuit in the method of discriminating whether a line or a speaker of the whole-body broadcasting system shown in FIG. 6 has a fault.
Referring to FIG. 7, when it is determined that the test tone is not output from the n-th speaker, the
FIG. 8 is a flowchart schematically showing a method of setting an output level of the whole-body broadcast system shown in FIG.
Referring to FIG. 8, the output level setting method (S300) of the public address system may first measure the sound pressure for noise in the broadcast output area when it is determined that there is no abnormality on the broadcast circuit (S301). The noise can be detected by the
If there is already sound in the broadcast output area due to a large number of people, equipment or sounds in the broadcast output area, the sound pressure of the sound output from the broadcast output area must be higher than the sound pressure of the sound (noise) The public address can be heard well to people in the output area. Therefore, it is possible to measure the sound pressure of the noise existing before the public address is output in the broadcast output area to the
However, the user can select the noise in the broadcast output zone, and the reference sound pressure can be set without measuring the noise (S302).
Next, the reference sound pressure can be set (S302). The reference sound pressure is a target sound pressure of the sound output from the
When the sound pressure of the noise is measured, the reference sound pressure may be set to be larger than the sound pressure of the measured noise. The user may input the reference sound pressure to the
Next, the
Subsequently, the measured sound pressure of the test tone outputted from all the
Specifically, the measured sound pressure is output from all the
The
The
After transmitting the first remote control signal, the
When the measured sound pressure is greater than the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure, the
The
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.
Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.
The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
1000: Public Address System
100: main broadcasting station
200: Broadcast output unit
300: mobile terminal
Claims (17)
A broadcast output unit comprising a plurality of speakers installed in each of the broadcast output zones;
A main broadcasting unit for transmitting the public address broadcast to the broadcast output unit; And
A mobile terminal for communicating with the main broadcasting unit and detecting sound output from the speaker; And,
Wherein the main broadcasting unit determines whether or not the broadcasting circuit is abnormal through the impedance of the main broadcasting unit, the broadcasting output unit, and the broadcasting circuit including the main broadcasting unit and the broadcasting output unit,
Wherein the mobile terminal measures the sound pressure of the sound output from the broadcast output unit and remotely controls the main broadcast unit so that the measured sound pressure becomes a predetermined reference sound pressure,
The mobile terminal comprises:
A microphone for sensing the sound output from the speaker and converting the sound into an electrical signal;
A communication unit for transmitting a test tone transmission request signal to the main broadcasting unit so that the main broadcasting unit outputs test tones to the speakers;
And a controller for comparing the measured sound pressure of the test tone monitored by the microphone and the reference sound pressure to generate a transmission request signal according to a user's input, A terminal control unit for generating a remote control signal for increasing or decreasing the sound pressure of the tone;
A display unit for displaying a message generated by the terminal control unit; And
A storage unit for storing an impedance on the broadcasting circuit calculated by the main broadcasting unit; And it includes a
Wherein the communication unit transmits the remote control signal to the main broadcasting unit,
Wherein the mobile terminal determines whether the line or the speaker is faulty by sensing the sound output from each of the speakers when the main broadcast section determines that the broadcast circuit is abnormal,
The terminal control unit,
When the main broadcasting unit determines that there is an abnormality on the broadcasting circuit, generates the test tone transmission request signal,
Determining whether the test tone is generated in the n-th speaker on the broadcast circuit according to whether the test tone is detected in the microphone,
If it is determined that the test tone is not output from the n-th speaker, it is detected whether a test tone occurs in the (n + 1) -th speaker neighboring the n-th speaker,
If the test tone is output from the (n + 1) th speaker, it is determined that the nth speaker has an error,
If the test tone is not output from the (n + 1) th speaker, it is determined that there is an abnormality in the line between the (n-1) th speaker and the nth speaker,
The display unit includes:
If it is determined by the terminal control unit that the nth speaker does not output a test tone, displays a message to measure the test tone from the (n + 1) th speaker,
If the nth speaker is determined to be abnormal by the terminal control unit, the nth speaker displays a message indicating that the nth speaker is out of order,
If the terminal control unit determines that there is an error in the line between the (n-1) th speaker and the (n) th speaker, a message indicating that the line between the (n-1) th speaker and the ,
The terminal control unit,
If it is determined that the test tone is output from the n-th speaker, whether the test tone is generated in the (n + 1) -th speaker neighboring the n-th speaker,
If the test tone is not output from the (n + 1) th speaker, it is detected whether the test tone is generated in the (n + 2)
If the test tone is output from the (n + 2) th speaker, it is determined that the (n + 1) th speaker has an error,
If the test tone is not output from the (n + 2) th speaker, it is determined that the line between the nth speaker and the (n + 1) th speaker is abnormal,
The display unit includes:
If the n + 1th speaker is judged to be abnormal by the terminal control unit, a message indicating that the (n + 1) th speaker is faulty is displayed,
If it is determined by the terminal control unit that there is an error in the line between the nth speaker and the (n + 1) th speaker, a message indicating that the line between the nth speaker and the (n + 1) Wherein the system comprises:
The main broadcasting unit,
A sound source reproducing unit for generating a sound source required for the public address broadcasting;
An amplifier for amplifying the sound source reproduced by the sound source reproducer;
A speaker selector for turning on and off the broadcasting output unit of the broadcasting output zone to output the amplified sound source;
A main controller for controlling the main broadcast section or the broadcast output section and determining whether there is an abnormality on the broadcast circuit through an impedance of the broadcast circuit; And
A communication unit for transmitting and receiving data to and from the mobile terminal; And a control unit for controlling the control unit.
The main controller includes:
An impedance calculation unit for calculating an impedance composite value of the broadcasting circuit by summing the impedances of the speakers installed in the broadcasting output zone;
An impedance measuring unit for measuring an impedance of the speakers installed in the broadcast output zone by sending a current to the line to obtain impedance measurements of the broadcast circuit; And
An abnormality determination unit for comparing the impedance composition value and the impedance measurement value to determine whether there is an abnormality on the broadcast circuit; And a control unit for controlling the control unit.
Wherein the abnormality determination unit compares the impedance composition value and the impedance measurement value and determines that there is an abnormality on the broadcast circuit when the difference between the impedance composition value and the impedance measurement value exceeds a predetermined range A public address broadcasting system characterized by.
Wherein the main broadcasting unit further comprises a storage unit for storing the impedance composite value.
Wherein the main controller further includes an impedance search unit for searching the storage unit to determine whether the impedance composition value is stored,
Wherein the impedance searching unit searches for the impedance composition value stored in the storage unit before the impedance calculation unit calculates the impedance composition value,
The impedance calculation unit does not calculate the impedance composite value when the impedance composite value is found, and the abnormality determination unit compares the impedance measurement value measured by the impedance measurement unit with the impedance composition value found by the impedance search unit And judges whether there is an abnormality on the broadcast circuit.
The terminal control unit,
Generates a first remote control signal for controlling the amplifier so that the sound pressure of the test tone output from the broadcast output unit is increased when the measured sound pressure is less than the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure,
And generating a second remote control signal for controlling the amplifier so that the sound pressure of the test tone output from the broadcast output unit is reduced when the measured sound pressure is greater than the reference sound pressure as a result of comparing the measured sound pressure and the reference sound pressure A public address broadcasting system characterized by.
The microphone may sense a noise in the broadcast output zone in which the broadcast output unit is installed according to an input of the user,
The terminal control unit measures the sound pressure of the noise,
Wherein the reference sound pressure is larger than the sound pressure of the noise.
Wherein the main broadcasting unit controls the input level of the amplifier so that the sound pressure of the test tone outputted from the broadcast output unit is increased or decreased according to the remote control signal when the remote control signal is received, .
The terminal control unit,
wherein the controller determines that there is an abnormality in the line between the first speaker or the first speaker and the main broadcasting unit when the test tone at the first speaker with n = 1 is not detected.
The terminal control unit,
A signal generator for generating a test tone transmission control signal for causing the main broadcasting unit to output the test tone from the speaker installed in the broadcast output zone according to an input of the user;
A reference sound pressure setting unit for setting the reference sound pressure by an input of the user;
A sound pressure measuring unit for measuring the sound pressure of the test tone by sensing the test tone generated by the microphone in the speaker;
A sound pressure comparator that compares the measured sound pressure and the reference sound pressure and generates a remote control signal to increase or decrease a sound pressure of the test tone outputted from the broadcast output unit according to a result of the comparison;
A test tone detector for determining whether the test tone is generated in the speaker according to whether the microphone senses the test tone generated in the speaker; And
if the test tone does not occur in the nth speaker and the test tone does not occur in the (n + 1) th speaker, it is determined that the line between the (n-1) th speaker and the nth speaker is abnormal, A failure determining unit for determining that there is an abnormality in the n-th speaker when a test tone is not generated in the speaker and a test tone is generated in the (n + 1) -th speaker; And a control unit for controlling the control unit.
The public address broadcasting system includes:
A broadcast output unit comprising a plurality of loudspeakers installed in each of a plurality of broadcast output areas to which a public address broadcast is output;
A main broadcasting unit for transmitting the public address broadcast to the broadcast output unit; And
A mobile terminal for communicating with the main broadcasting unit and detecting sound output from the speaker; And,
In the method for checking the public address system,
Determining whether there is an abnormality on the broadcast circuit through the impedance of the main broadcast section, the broadcast output section, and the broadcast circuit including the main broadcast section and the broadcast output section;
Determining which line or which speaker of the line or the plurality of speakers has a failure by sensing the sound output from each of the speakers; And
Measuring a sound pressure of the sound outputted from the broadcast output unit and setting an output level so that the measured sound pressure is a predetermined reference sound pressure when there is no abnormality on the broadcasting circuit; And,
The mobile terminal comprises:
A microphone for sensing the sound output from the speaker and converting the sound into an electrical signal;
A communication unit for transmitting a test tone transmission request signal to the main broadcasting unit so that the main broadcasting unit outputs test tones to the speakers;
A terminal control unit for generating the transmission request signal according to an input of a user and determining which line or speaker of the line or the speaker on the broadcasting circuit has a failure according to whether the test tone is detected by the microphone;
A display unit for displaying a message generated by the terminal control unit; And
A storage unit for storing an impedance on the broadcasting circuit calculated by the main broadcasting unit; / RTI >
Wherein the step of determining which line or which speaker is faulty comprises:
Outputting a test tone from the speaker by remote control of the main broadcasting unit by the mobile terminal when it is determined that there is an abnormality on the broadcasting circuit;
Determining whether the test tone is generated in the n-th speaker on the broadcast circuit according to whether the test tone is detected in the microphone;
Detecting whether a test tone is generated in an (n + 1) -th speaker neighboring the n-th speaker when it is determined that the n-th speaker does not output the test tone;
Determining that the nth speaker is abnormal when the test tone is output from the (n + 1) th speaker, and displaying a message indicating that the nth speaker is faulty on the display unit; And
Th speaker and the n-th speaker when the test tone is not output from the (n + 1) th speaker, the controller determines that the line between the (n-1) Displaying a message that the line between the speakers is abnormal; / RTI >
Wherein the step of determining which line or which speaker is faulty comprises:
Detecting whether a test tone occurs in an (n + 1) -th speaker neighboring the n-th speaker when it is determined that the n-th speaker outputs the test tone;
Detecting whether the test tone occurs in the (n + 2) th speaker when the test tone is not output from the (n + 1) th speaker;
If the test tone is output from the (n + 2) th speaker, determining that the (n + 1) th speaker is abnormal and displaying a message indicating that the (n + 1) th speaker is faulty on the display unit;
Th speaker and the (n + 1) -th speaker when the test tone is not output from the (n + 1) th speaker and the (n + And displaying a message indicating that the line between the speakers is abnormal.
Wherein setting the output level comprises:
Setting the reference sound pressure;
Outputting a test tone from the speaker by remote control of the main broadcasting unit by the mobile terminal;
Measuring a sound pressure of the test tone to set a measured sound pressure of the test tone;
Comparing the reference sound pressure and the measured sound pressure;
Generating a remote control signal for causing the main broadcasting unit to increase or decrease a sound pressure of the test tone outputted from the broadcast output unit according to the comparison result; And
Outputting the test tone whose sound pressure is increased or decreased according to the remote control signal; Wherein the method comprises the steps of:
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| KR1020160040110A KR101683417B1 (en) | 2016-04-01 | 2016-04-01 | Public address system and method for check in public address system |
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| KR1020160040110A KR101683417B1 (en) | 2016-04-01 | 2016-04-01 | Public address system and method for check in public address system |
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