KR101332797B1 - Self-diagnosis apparatus for audio system - Google Patents

Abstract

The present invention relates to a self-diagnosis apparatus for a sound system. The self-diagnosis apparatus includes: a first temperature sensing unit which senses the internal temperature of a sound system and outputs a corresponding signal; a second temperature sensing unit which senses the external temperature of the sound system and outputs a corresponding signal; a control unit which outputs an alarm signal by determining the external temperature of the sound system, which is determined by the external temperature of the sound system determined by the signal outputted from the second temperature sensing unit, is a second desired temperature or a higher temperature in case the internal temperature of the sound system which is determined by the signal outputted from the first temperature sensing unit is a first desired temperature or a higher temperature and outputs an alarm signal by determining that the overheating cause of the sound system is the external temperature in case the external temperature is the second desired temperature or a higher temperature; and an abnormal state alarm unit which is connected to the control unit and displays the overheating cause of the sound system by operating according to alarm signals outputted from the control unit. [Reference numerals] (AA,CC,DD) No;(BB,EE,FF) Yes;(S10) Start;(S100) Return;(S11) Read a first temperature sensing signal;(S110) Display the overheating state of the sound system which is caused by an external temperature and transmit the state to a user terminal;(S111) Read a humidity sensing signal;(S112) Determine an internal humidity;(S113) Internal humidity >= desired humidity?;(S115) Display the abnormal state of the sound system which is caused by moisture and transmit the state to a user termimal;(S12) Determine the internal temperature of a sound system;(S13) Internal temperature >= first desired temperature?;(S14) Read a second temperature sensing signal;(S15) Determine the external temperature of the sound system;(S16) External temperature >= second desired temperature?;(S17,S19,S114) Operate an alarm unit;(S18) Display the overheating state of the sound system by a display unit and transmit the state to a user terminal

Description

Self-diagnosis device of sound system {SELF-DIAGNOSIS APPARATUS FOR AUDIO SYSTEM}

The present invention relates to a self-diagnostic device of an acoustic device.

Conventional public address (PA) acoustic systems have at least one amplifier, that is, an amplifier and at least one speaker connected to each amplifier.

In this sound system, the amplifier amplifies the audio signal from the audio signal generator such as a microphone or an audio reproducing device to an audible frequency that can be heard by a human. It is consumed and generates a lot of heat.

As such, in order to diagnose a state of an acoustic system such as an amplifier due to heat generation, a temperature sensing unit for detecting a temperature is installed in the acoustic system, and the heat generation temperature of the acoustic system is measured.

Therefore, when the heating temperature of the acoustic system measured by the temperature sensing unit is higher than or equal to the set temperature, the warning device is driven to inform the user that the current acoustic system is in a state where a failure may occur due to overheating, or drive the cooling device. .

However, these acoustic systems not only generate heat but also have various causes of failure such as overload, offset, power failure, etc., and are also affected by changes in the surrounding environment in which the acoustic system is installed.

Removable communication module for PA power amplifier applying front type self-diagnosis system part as described in Korean Patent Registration No. 10-867722 has a rupture diagnosis part, a cooling system diagnosis part, an emergency power diagnosis part, an emergency power fuse diagnosis part in a self-diagnosis part. And a commercial power supply diagnostic unit and a power supply fuse diagnosis unit, and a warning unit and a self-diagnostic front display display unit corresponding to each diagnostic unit. For this reason, the diagnostic unit detecting the abnormality drives the corresponding warning unit.

However, this conventional technology causes problems such as abnormalities caused by the surrounding environment or inaccurate diagnosis of the state of the acoustic system itself, such as an amplifier.

Therefore, the technical problem to be achieved by the present invention is to improve the accuracy of the abnormal diagnosis of the acoustic system.

Another technical problem to be achieved by the present invention is to extend the life of an acoustic device by performing failure prediction of the acoustic system.

According to an aspect of the present invention, there is provided a self-diagnostic apparatus for a sound system, including: a first temperature sensor configured to detect an internal temperature of an acoustic system and output a corresponding signal; The second temperature detector is connected to the second temperature detector, the first and second temperature detectors, and the internal temperature of the acoustic system determined by the signal output from the first temperature detector is equal to or greater than the first set temperature. It is determined whether the external temperature of the acoustic system determined by the external temperature of the acoustic system determined by the signal output from the second temperature is greater than or equal to the second set temperature, and if the external temperature is greater than or equal to the second predetermined temperature, cause of overheating of the acoustic system. A control unit for determining a state due to the external temperature and outputting a warning signal, and connected to the control unit and outputting from the control unit By operating in accordance with the signal includes an abnormal state notification unit configured to display the cause of the overheating of the acoustic system.

The controller may determine a state of the acoustic system as an overheat state and output a warning signal to the abnormal state notification unit when the internal temperature is greater than or equal to the first set temperature and the external temperature is lower than the second set temperature. .

The self-diagnostic apparatus of the acoustic system according to the above feature may further include a humidity sensing unit for determining an internal humidity of the acoustic system and outputting a corresponding signal, wherein the controller is controlled by a signal output from the humidity sensing unit. When the humidity of the determined acoustic system is equal to or higher than a set humidity, a warning signal may be output to the abnormal state notification unit.

The self-diagnostic apparatus of the acoustic system according to the above feature may further include a power supply output voltage measurer configured to measure a voltage output from the power supply and output a signal having a corresponding state.

In this case, when the rate of change of the output voltage determined by the signal output from the power supply output voltage measuring unit is out of a setting range, the controller may output a warning signal to the abnormal state notification unit to display an abnormal state of the power supply unit. Can be.

The self-diagnostic apparatus of the acoustic system according to the above characteristic is connected to an amplifier output measuring unit and the controller which measures an output of an amplifier and outputs a signal of a corresponding state, and an operating state is changed according to a driving signal output from the controller. It further includes an amplifier selection unit for changing the connection relationship between the speaker and the amplifier.

In this case, the controller determines the output variation ratio of the amplifier using the output of the amplifier and the output of the previous amplifier determined using the state of the signal output from the amplifier output measuring unit, and the output variation ratio of the determined amplifier is the first When it decreases above the set value, it is determined whether a spare amplifier exists, and when the spare amplifier exists, it is good to output a drive signal to the amplifier selector and connect the speaker to the spare amplifier.

If the output change rate of the amplifier does not decrease above the first set value, the controller determines whether the output change rate of the amplifier decreases above a second set value smaller than the first set value, and determines the output change rate of the amplifier. When the reduction is greater than or equal to the second set value, a warning signal may be output to the abnormal state notification unit to indicate that the amplifier needs to be checked.

When the preliminary amplifier does not exist, the controller may determine the state of the amplifier as an abnormal state and output a warning signal to the abnormal state notification unit.

According to this feature, since the abnormal state due to the heat generation of the acoustic system is determined using not only the internal temperature of the acoustic system but also the external temperature, the cause of the abnormality is more accurately determined, and the abnormal state of the acoustic system can be checked quickly and accurately.

In addition, when an abnormality occurs in the amplifier currently in use, and a spare amplifier exists, the switching operation to the spare amplifier is automatically performed. As a result, since the operation is performed without stopping the operation of the acoustic system, the user's satisfaction is improved.

When the operation of the power supply unit is abnormal and the internal humidity of the acoustic system is over-humidity, the state of the acoustic system is displayed to the outside, thereby reducing the risk of power failure caused by the operation of the sound system due to the power supply unit or by excessive humidity.

1 is a block diagram of a self-diagnostic apparatus of an acoustic system according to an embodiment of the present invention.
2 to 4 are flowcharts illustrating an operation of a self-diagnostic method of an acoustic system according to an exemplary embodiment of the present invention, respectively.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Next, a self-diagnostic apparatus and method for an acoustic system according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

First, a self-diagnosis apparatus for an acoustic system according to an exemplary embodiment of the present invention will be described in detail with reference to FIG. 1.

The self-diagnostic apparatus of the acoustic system according to an embodiment of the present invention measures the output voltage of the power supply unit and outputs a signal having a corresponding magnitude. The first temperature sensing unit 12 outputs a temperature sensing signal having a magnitude of the same, the second temperature sensing unit 13 measuring the external temperature of the acoustic system and outputs a temperature sensing signal of a corresponding size, and the internal humidity of the acoustic system. Humidity sensing unit 14 for outputting the humidity detection signal of the corresponding size by measuring the output of the amplifier [output power (W) of the amplifier output measuring unit 15 for outputting the signal of the corresponding size, the power supply unit To the control unit 20 and the control unit 20 connected to the output voltage measuring unit 11, the first and second temperature sensing units 12 and 13, the humidity sensing unit 14, and the amplifier output measuring unit 15. Connected to the display unit 31 and the control unit 20 connected Connected to the alarm unit 31 and the control unit 20, an amplifier selector 33 for selecting one of the plurality of amplifiers 331 and 332 to connect to the speaker 33, and a communication network. The mobile terminal 41 is connected to the control unit 20 wirelessly or by wire through 40.

The power supply unit is a portion supplying power required for the operation of the acoustic system, and the power supply unit output voltage measuring unit 11 outputs an output voltage output from the power supply unit as described above.

The first temperature detector 12 measures the heating temperature of the acoustic system.

The first and second temperature detectors 12 and 13 may be thermistors.

The humidity sensing unit 14 may use an electric resistance hygrometer made of a thin film polymer.

The amplifier output measuring unit 15 senses the rated output output from the amplifier (eg, 331) to be measured, and may measure the rated output using the voltage and current output from the amplifier.

The control unit 20 diagnoses the state of the power supply unit as an abnormal state when the output voltage change rate is equal to or greater than a set value of the output voltage change rate by using the change rate of the output voltage of the power supply unit output from the power supply unit output voltage measuring unit 11.

In addition, the controller 20 measures an internal temperature and an external temperature of the acoustic system using temperature sensing signals output from the first and second temperature sensors 12 and 13, and then, based on the external temperature, The internal heating state is determined, and when the internal humidity of the acoustic system is higher than or equal to the set humidity by using the humidity detection signal output from the humidity detector 14, a warning signal is output to the display unit 31 and the alarm unit 32 to short-circuit the current. Warns of danger.

The control unit 20 also measures the output state of the corresponding amplifier 331 using the signal output from the amplifier output measuring unit 15, and uses the change rate of the measured output to determine the abnormal state of the amplifier 331 in use. Determine.

At this time, when the amplifier 331 being used connected to the speaker 333 is determined to be in an abnormal state, the controller 20 may replace the spare unused spare amplifier 332 that is, that is, an amplifier not connected to the speaker 333. The amplifier selector 33 outputs a corresponding signal to replace the spare amplifier 332 in the amplifier 331 that is in use with the speaker 333.

The display unit 31 includes a display device such as a liquid crystal display, and outputs information output from the control unit 20 so that an administrator can check the self-diagnosis state of the current acoustic system.

The alarm unit 32 may be a speaker that outputs a warning sound.

In this example, one of the display unit 31 and the alarm unit 32 may be omitted, and the display unit 31 and the alarm unit 32 are called an abnormal state notification unit.

The amplifier selection unit 33 changes the operation state according to the signal output from the control unit 20 to change the amplifiers 331 and 332 connected to the speaker 333. The amplifier selector 33 is composed of a plurality of relays arranged in a matrix form, and the operating states of the plurality of relays change according to signals output from the amplifier selector 33 so that a desired amplifier 331 or 332 is provided. To be connected to the speaker 333.

The communication network 40 is a communication network that allows communication between the control unit 20 and the mobile terminal 41 to be wireless or wired, such as an internet network.

The user terminal 41 may be a portable computer, a personal computer, a mobile phone such as a smart phone, or the like.

Next, the operation of the self-diagnostic apparatus of the acoustic system having such a structure will be described with reference to FIGS. 2 to 4.

First, referring to FIG. 2, the operation of the control unit 20 for self-diagnosis of the acoustic system using the signals output from the first and second temperature detectors 12 and 13 and the humidity detector 14 is performed. Explain.

When power required for the operation of the sound system is applied and the operation of the control unit 20 starts (S10), the control unit 20 reads the first temperature detection signal output from the first temperature detection unit 12 (S11). The internal temperature of the acoustic system is determined (S12).

Next, the control unit 20 compares the determined internal temperature with the first set temperature (S13).

When the determined internal temperature of the acoustic system is equal to or higher than the first set temperature, the controller 20 determines the state of the acoustic system as an overheated state and performs an operation of protecting the acoustic system from overheating.

Therefore, the control unit 20 reads the second temperature detection signal output from the second temperature detection unit 13 (S14), and determines the external temperature of the sound system (S15).

Then, the controller 20 compares the determined external temperature of the acoustic system with the second set temperature (S16). In this case, the second set temperature may be different from or larger than the first set temperature, or may be the same as each other.

When the external temperature of the sound system is lower than or equal to the second set temperature, the control unit 20 determines that the internal temperature of the sound system is raised by the heat generated by the operation of the sound system.

Accordingly, the control unit 20 outputs a driving signal to the alarm unit 32 to operate the alarm unit 32 (S17), and operate the display unit 31 to determine a state of the acoustic system such as the internal temperature of the acoustic system measured. And the reason for the alarm occurrence, such as the current overheating state, etc. are displayed in letters, numbers or symbols (S18) so that the inspection operation of the inspector can be easily and quickly performed. Then, the control unit 20 proceeds to the return step (S100).

However, when the external temperature determined in step S16 is higher than the second set temperature, the control unit 20 outputs a driving signal to the alarm unit 32 to operate the alarm unit 32 to generate a sound system due to heat generation. It informs the outside that the probability of abnormality is high (S19).

However, in this case, since the ambient temperature of the position where the acoustic system is set is a high temperature above the second set temperature, it is accurate whether the internal temperature rise of the acoustic system is substantially caused by heat generated by the operation of the acoustic system or due to the ambient temperature. Not.

Therefore, the control unit 20 displays the alarm occurrence reason, which is an overheating state of the sound system due to the ambient temperature and the main surface temperature of the sound system through the display unit 31 (S110), and proceeds to the return step S100.

As a result, the inspector can first measure whether the sound system generates heat after performing the operation of lowering the ambient temperature of the sound system firstly, thereby quickly and accurately identifying the cause of the heat generation, thereby reducing the inspection time. The performance and lifetime of the acoustic system can also be extended.

However, in step S13, when the determined internal temperature is lower than the first set temperature, it is determined that the state of the current acoustic system is not a state in which an abnormality occurs due to heat, so that the control unit 20 proceeds to step S111 and the humidity is reached. The humidity output from the detection unit 14 is read to determine the humidity inside the acoustic system (S112).

Next, the control unit 20 compares the determined internal humidity with the set humidity (S113).

When the internal humidity is lower than the set humidity, the control unit 20 determines that there is no fear of malfunction or abnormality of the acoustic system due to humidity, and proceeds to the first step S11.

However, when the internal humidity is higher than the set humidity, the control unit 20 drives the alarm unit 32 (S114), and informs the outside that there is a risk of occurrence of a short circuit due to current moisture.

Then, the control unit 20 displays the state of the acoustic system such as the internal humidity measured by the display unit 31 and the cause of the alarm such as the over-humidity state (S115), so that a quick and accurate check can be made.

Next, referring to FIG. 3, an operation of the control unit 20 which performs a self-diagnosis of the power supply unit using the signal output from the power supply unit output voltage measuring unit 11 will be described.

First, when the operation of the control unit 20 starts (S20), the control unit 20 reads an output voltage measurement signal output from the power supply unit output voltage measuring unit 11 (S21), and outputs an output voltage output from the power supply unit. It is determined (S22).

Then, the controller 20 determines the rate of change of the output voltage of the power supply unit by using the previous output voltage measured in the previous step and the current output voltage determined in the current step S22 (S23), It is determined whether the rate of change falls within a setting range (eg, ± 10%) (S24).

When the rate of change of the determined output voltage is within the set range (S24), the control unit 20 determines the operation state of the power supply unit as a normal state and proceeds to the first step S21.

However, when the rate of change of the determined output voltage is out of the setting range (S24), that is, when the increasing width of the output voltage is larger than the maximum value of the setting range or the decreasing width is smaller than the minimum value of the setting range, the controller 20 controls the power supply unit. The state is determined to be an abnormal state.

Therefore, the control unit 20 operates the alarm unit 32 (S25) and displays the cause of the alarm occurrence, that is, the abnormality to the power supply unit, on the display unit 31 (S26) and proceeds to the return step (S200). ).

Therefore, when an abnormality occurs in the power supply unit, the inspector quickly and accurately checks the state of the power supply unit by using the operating states of the alarm unit 32 and the display unit 31.

Next, the self-diagnostic operation of the control unit 20 using the signal output from the amplifier output measuring unit 15 will be described with reference to FIG. 4.

When the operation is started (S30), the control unit 20 reads the amplifier output measurement signal output from the amplifier output measuring unit 15 (S31) and measures the output of the amplifier (eg, 331) desired for diagnosis (S32). .

In this case, the output of the amplifier 331 may be a rated output, that is, power determined using the voltage and current output from the corresponding amplifier 331.

Next, the controller 20 determines an output variation rate of the amplifier 331 using the previous amplifier output measured in the previous step and the current amplifier output determined in the current step S32 (S33).

Then, the control unit 20 compares the determined output change rate with the first set value (eg, 50%), and determines whether the output change rate has decreased to the first set value or more (S34).

Therefore, when the output of the amplifier is not lower than the first setting value by more than the first setting value or more than the first setting value, the controller 20 again compares the output variation rate with the second setting value (for example, 30%) ( S35) It is determined whether the output variation rate of the amplifier is reduced by more than the second set value. At this time, the absolute value of the second set value is smaller than the absolute value of the first set value.

When the output change rate is reduced to a value higher than or equal to the second set value, the control unit 20 is a check-on amplifier that is currently in operation, that is, the amplifier 331 being diagnosed needs to be checked, that is, not in an abnormal state but with a high risk of abnormality. Determine.

Therefore, the control unit 20 operates the alarm unit 32, and displays the state in which the inspection is required as soon as the amplifier 331 is the inspection-required amplifier as the display unit 31 (S37).

For this reason, before an abnormality occurs in the amplifier 331, the inspection-needed amplifier 331 is known to the user or the inspector in advance so that a quick inspection can be performed, thereby preventing the sudden failure of the amplifier 331 during the operation of the acoustic system.

However, in step S34, when the output change rate of the amplifier is reduced to the first set value or more, the control unit 20 determines the state of the amplifier 331 currently operating as an abnormal state.

Therefore, the controller 20 reads a flag value for determining whether a spare amplifier exists and determines whether a spare amplifier (eg, 332) exists (S38).

At this time, the value of the flag is changed by a signal applied from the outside, and if a preliminary amplifier exists in the acoustic system, the user changes the value of the corresponding flag to '1', for example, otherwise the value of the flag is '0'. Set to. If there is a spare amplifier, position information of the spare amplifier is also input to the controller 20.

Next, when it is determined that a preliminary amplifier exists, the controller 20 outputs a corresponding driving signal to the amplifier selector 33 to release the connection state between the current speaker 333 and the amplifier 331 and the speaker 333. ) And a new amplifier (332) (S39).

Then, the display unit 31 displays the switching operation state to the spare amplifier and the abnormal state of the amplifier 331 (S310), so that the inspection of the amplifier 331 having the abnormality can be performed and the current speaker 333 is displayed. It allows the user or inspector to know exactly which type of amplifier is connected.

However, when the spare amplifier does not exist, the controller 311 drives the notification unit 32 to inform the outside that an abnormality has occurred in the acoustic system (S311), and the cause of the abnormality through the display unit 31 is an abnormality of the amplifier. Informs that (S312). At this time, the positional information of the amplifier 331 in which the abnormality is displayed is also displayed so that the rapid check of the amplifier 331 is performed accurately. Then, the process proceeds to the return step (S300).

As described above, when an error occurs in the corresponding part through the operation of FIGS. 2 to 4, and the alarm unit is operated, the controller 20 determines the abnormal state of the current acoustic system and the cause of the error through the communication network 40. Transmission to the terminal 41.

Therefore, the person in charge of the acoustic system can quickly detect an abnormal state of the acoustic system.

In this example, a diagnosis operation for diagnosing an abnormal state of each component of the acoustic system has been described as an example of performing a separate routine. However, the self-diagnosis operation may be performed through one routine.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

11: power supply output voltage measurement part 12, 13: temperature sensing part
14: humidity detection unit 15: amplifier output measurement unit
20: control unit 31: display unit
32: alarm unit 33: amplifier selection unit
331, 332: amplifier 333: speaker
40: communication network 41: user terminal

Claims (7)

A first temperature sensor configured to detect an internal temperature of the acoustic system and output a corresponding signal;
A second temperature sensor configured to detect an external temperature of the sound system and output a corresponding signal;
When the internal temperature of the acoustic system, which is connected to the first and second temperature detectors and determined by the signal output from the first temperature detector, is higher than or equal to the first set temperature, the signal output from the second temperature detector. It is determined whether the external temperature of the acoustic system determined by the external temperature of the acoustic system determined by the controller is greater than or equal to the second set temperature, and when the external temperature is greater than or equal to the second predetermined temperature, the cause of overheating of the acoustic system is caused by the external temperature. A control unit for determining a state and outputting a warning signal, and
An abnormal state notification unit connected to the control unit and operating according to a warning signal output from the control unit to display a cause of overheating of the sound system.
Self-diagnostic device of the acoustic system comprising a. In claim 1,
The control unit, when the internal temperature is above the first set temperature and the external temperature is lower than the second set temperature, determines that the state of the sound system as an overheated state and outputs a warning signal to the abnormal state notification unit Self-diagnosis device. In claim 1,
Further comprising a humidity sensor for determining the internal humidity of the acoustic system and outputs a corresponding signal,
The control unit outputs a warning signal to the abnormal state notification unit when the humidity of the sound system determined by the signal output from the humidity sensing unit is greater than or equal to a set humidity.
Self-diagnosis device for acoustic systems. In claim 1,
The apparatus may further include a power supply unit output voltage measuring unit configured to measure a voltage output from the power supply unit and output a signal having a corresponding state.
The control unit outputs a warning signal to the abnormal state notification unit to display an abnormal state of the power supply unit when the rate of change of the output voltage determined by the signal output from the power supply unit output voltage measuring unit is out of a setting range. Self-diagnosis device. In claim 1,
The amplifier is connected to the amplifier output measuring unit and the controller for measuring the output of the amplifier and outputs a signal of a corresponding state, and the amplifier is selected to change the connection relationship between the speaker and the amplifier by changing the operation state according to the driving signal output from the controller. part
Further comprising:
The control unit,
The output variation rate of the amplifier is determined using the output of the amplifier and the output of the previous amplifier determined using the state of the signal output from the amplifier output measuring unit,
If the determined change rate of the output of the amplifier decreases above the first set value, it is determined whether a spare amplifier exists.
If the preliminary amplifier exists, the driving signal is output to the amplifier selector to connect the speaker to the preliminary amplifier.
Self-diagnosis device for acoustic systems. The method of claim 5,
If the output change rate of the amplifier does not decrease above the first set value, the controller determines whether the output change rate of the amplifier decreases above a second set value smaller than the first set value, and determines the output change rate of the amplifier. And when the value falls below the second set value, outputs a warning signal to the abnormal state notification unit to indicate that the amplifier needs to be checked. The method of claim 5,
And the controller determines that the amplifier is in an abnormal state when the preliminary amplifier does not exist, and outputs a warning signal to the abnormal state notification unit.

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