KR101931987B1 - Remote voice broadcasting apparatus - Google Patents

Abstract

The present invention relates to a remote voice broadcasting device, comprising: a communication part (100) for receiving broadcast information transmitted from a remote place; a memory part (110) storing the broadcast information transmitted from the communication part (100) or having pre-stored broadcast information; an amplification part (120) configured with a plurality of amplification modules (200), and amplifying voice data among the broadcast information and outputting the amplified voice data to the speaker (150); a power supply part (130) supplying power to the amplification part (120); and a control part (140) measuring a voltage of the power supply part (130), and sequentially controlling power supply from the power supply part (130) to each of the amplification modules (200).

Description

[0001] REMOTE VOICE BROADCASTING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a remote audio broadcasting apparatus, and more particularly, to a remote audio broadcasting apparatus for broadcasting broadcasted information in a remote place and sounding a transmitted code or voice.

A remote audio broadcasting apparatus (hereinafter referred to as a broadcasting apparatus) (including a disaster voice alarm apparatus and a voice broadcast receiving apparatus) receives a code or voice form transmitted from a remote location using information communication technology, Lt; / RTI >

The broadcasting apparatus amplifies the voice data through an amplifier card that amplifies the voice data, and broadcasts the amplified voice data to the speaker. Specifically, as shown in FIG. 1, the amplifier card is connected to an amplifying circuit 1, a boosting circuit 2, and a large-capacity capacitor 3, 3 '.

The amplifying circuit 1 has a usable voltage, which is generally higher than the voltage of the battery 4. The booster circuit 2 boosts the voltage supplied from the battery 4 and supplies a voltage that the amplification circuit 1 can use.

When the relay 5 is turned on at the time of the initial startup, power is supplied from the battery 4 to the boosting circuit 2 and the amplifying circuit 1. At this time, the power source of the battery 4 is first supplied to the large capacity capacitors 3 and CAP1 to be charged. As shown in FIG. 2, a phenomenon occurs in which the current CAP1 rises rapidly in the capacitor and the terminal voltage (output voltage) of the battery drops instantaneously. In other words, conventionally, since a single large capacity capacitor is provided in one amplifier card, a large amount of instantaneous current flows through the large capacity capacitor at the time of initial startup, so that the voltage of the battery drops and the entire device is unstable .

[Prior Art Literature]

[Patent Literature]

Korean Patent Publication No. 10-2013-0093763 (published on March 23, 2013)

An object of the present invention is to alleviate a phenomenon in which a large instantaneous current flows in a direction of a series of lower circuits including a large capacity capacitor at the time of initial startup, thereby lowering the voltage of the battery.

A remote audio broadcasting apparatus according to an exemplary embodiment of the present invention includes a communication unit 100 for receiving broadcast information transmitted from a remote location; A memory unit 110 for storing the broadcast information transmitted from the communication unit 100 or storing the broadcast information; An amplification unit 120 composed of a plurality of amplification modules 200 and amplifying the voice data among the broadcast information and outputting the amplified voice data to the speaker 150; A power supply unit 130 for supplying power to the amplification unit 120; A control unit 140 for measuring the voltage of the power supply unit 130 and sequentially controlling power supply from the power supply unit 130 to each of the amplification modules 200; Each of the plurality of amplification modules 200 includes a high voltage power supply section and an amplification circuit, and the high voltage power supply section supplies a voltage of the power supply section 130 to the amplification circuit so as to supply power required for amplification in the amplification circuit The controller 140 supplies power to the first amplifying module among the plurality of amplifying modules 200 and supplies the amplified signal to the power supply unit 130. [ The voltage of the power supply unit 130 is supplied to the second amplification module while the power of the power supply unit 130 supplied to the first amplification module is maintained after a predetermined time T1 has elapsed after the voltage drops. After supplying power and supplying power to the second amplification module, the voltage of the power supply unit 130 drops and a predetermined voltage range is recovered. After a predetermined time T2 elapses, the voltage is supplied to the second amplification module The power supply unit 130 supplies power to a plurality of amplification modules by connecting power to the third amplification module while maintaining the power of the power supply unit 130, And the control unit 140 controls the amplification module 200 to be supplied with power for each of the output voltage steps of the power supply unit 130 after power is supplied to the entire plurality of amplification modules 200. [ The power of the power source unit 130 can be secured.

When the voltage of the power supply unit 130 reaches a preset voltage range, the controller 140 controls the power supply to any one of the amplification modules 200, So as to supply power to the power supply.

When the power of the power supply unit 130 is out of a predetermined range after the power supply to the amplification module 200 is completed, the controller 140 controls the power supplied to the amplification module 200 one by one So as to be sequentially blocked.

The amplification module 200 amplifies the voice data and outputs the amplified voice data to the speaker 150. A voltage regulation circuit 220 receiving power from the power supply unit 130 and adjusting the voltage to be usable in the amplification circuit 210; A first capacitor 230 connected between the voltage regulating circuit 220 and the power supply unit 130; And a second capacitor (240) connected between the amplification circuit (210) and the voltage regulation circuit (220); The first and second capacitors 130 and 140 are connected between the first capacitor 230 and the power supply 130 and are supplied to the voltage regulating circuit 220 and the amplifying circuit 210 according to whether the first and second capacitors 130 and 140 are charged A current limiting circuit 250 controlled by the controller 140 to supply or limit a current; And a control unit.

The current limiting circuit 250 includes a current limiting element 253 for limiting a current by changing a resistance according to a temperature change; A first relay unit 251 connected in series with the current limiting element 253; And a second relay unit 252 connected in parallel with the first relay unit 251. The first relay unit 251 and the second relay unit 252 are controlled by the control unit 140, .

The controller 140 turns on the first relay unit 251 and turns off the second relay unit 152 during the initial startup so that the first and second capacitors 130 and 140 are charged while the first and second capacitors 130 and 140 are being charged. When the first and second capacitors 130 and 140 are charged, the second relay unit 252 is turned on and the first and second capacitors 130 and 140 are turned on, And controls the relay unit 251 to turn OFF to supply the current to the voltage regulating circuit 220 and the amplifying circuit 210. [

In addition, the control unit 140 compares the unique number received from the remote place with the unique number of the broadcasting information stored in the memory unit 110 through the communication unit 100, .

If the unique number received from the remote place matches the unique number previously stored in the memory unit 110, the control unit 140 stores the voice data pre-stored in the memory unit 110 matching the pre- To the amplification unit (120).

If the unique number received from the remote site does not match the unique number stored in the memory unit 110, the control unit 140 may request voice data matching the unique number from the remote location, Converts the received real-time voice into voice data, and transmits the voice data to the amplification unit 120 and stores the voice data.

The control unit 140 transmits the measured voltage of the power supply unit 130 to the remote location through the communication unit 100. When the measured voltage of the power supply unit 130 is out of the preset consumption voltage pattern, It is determined that the power supply unit 130 is abnormal, and the determination information is transmitted to the remote site.

According to the present invention, the conventional amplifying unit is divided into a plurality of modules, and the respective modules are sequentially operated to minimize the inrush current necessary for charging the capacitor of the amplifier circuit at the time of initial startup, so that instantaneous current So that the phenomenon that the voltage of the battery drops is reduced and the broadcasting apparatus can operate stably.

In addition, according to the present invention, it is possible to reliably perform broadcasting even in a disaster situation where it is difficult to maintain a large amount of communication for a long period of time by reducing the transmission time and amount of voice or data necessary for performing broadcasting, It is effective.

1 is a circuit diagram of an amplifier card of a conventional broadcasting apparatus
2 is a graph showing voltage and current states of an amplifier card of a conventional broadcast apparatus;
3 is a diagram illustrating an actual picture of a remote audio broadcasting apparatus according to an embodiment of the present invention
FIG. 4 is an overall configuration diagram of a remote audio broadcasting apparatus according to a preferred embodiment of the present invention.
5 is a configuration diagram of an amplifying unit of a remote audio broadcasting apparatus according to a preferred embodiment of the present invention.
6 and 7 are graphs showing voltage and current states of a remote audio broadcasting apparatus according to a preferred embodiment of the present invention.
8 is a circuit diagram of an amplification module of a remote audio broadcasting apparatus according to an embodiment of the present invention
FIG. 9 is a flowchart of a voice mode broadcasting method using a remote audio broadcasting apparatus according to a preferred embodiment of the present invention
10 is a flowchart of a data mode broadcasting method using a remote audio broadcasting apparatus according to an embodiment of 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components 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. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, 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.

Hereinafter, a remote audio broadcasting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. In the following description of the present invention, reference will be made to the accompanying drawings.

Referring to FIG. 3, an apparatus actually manufactured by the remote audio broadcasting apparatus of the present invention will be described. The remote audio broadcasting apparatus of the present invention includes a main board 11 in a case 10 and an RTU card 12 serving as a control unit for the main board 11 and a plurality of amplifier cards 13 . In addition, the case 10 includes at least one battery 14 (power supply unit).

The case 10 may be formed of a metal housing, and supports a 19-inch rack standard so that other apparatuses other than the broadcasting apparatus can be easily installed.

In addition, the case 10 is provided with a metal structure (not shown) having a 'U' shape on its rear surface, so that the case 10 can be easily installed on a round column. In addition, the case 10 has a ventilation hole (not shown) so that the internal heat can be discharged to the outside, and a rubber packing (not shown) is installed on the door frame to prevent the rain from penetrating even when installed outdoors. can do.

The main board 11 is provided with a connector or a card edge. Each of the amplifier cards 13 implemented in the form of a card can be coupled to the connector or the card edge of the main board 11 to be easily detachable. In case of a failure, it is easy to maintain and repair since only the failed amplifier card 13 needs to be replaced.

In addition, the main board 11 may be equipped with a solar charger. The charging wire of the battery 14 of the solar charger can be composed of PCB pattern of main board 11. The main board 11 may include a data bus between the RTU card 12 and the amplifier card 13 and supplies power to the RTU card 12 and the amplifier card 13. Also, the main board 11 may include an AC charger connection terminal to charge the battery 14 by connecting the AC charger to the outside.

In addition, the main board 11 may be equipped with one current sensor for detecting solar charge current and one current sensor for detecting AC charging current.

In addition, the main board 11 is equipped with four digital input terminals, two N.C, two relays having two N.O contacts, and connects to the RTU card 12.

A fuse may be mounted on the main board 11.

In addition, the main board 11 can be powered on or off of the RTU card 12 by mounting a power switch of the RTU card 12.

The main board 11 connects each of the amplifier cards 13 and the speaker terminals.

Also, the main board 11, the RTU card 12, and the amplifier card 13 can be mounted on a 19-inch 6U sub rack chassis.

The RTU card 12 may include a CDMA 3G modem, a CPU, an Ethernet port, an audio codec IC, an OLED display, an RS-232 port, an RS-485 driver, an LED, and a rotary switch.

In addition, the RTU card 12 can measure a voltage using a voltage divider circuit and an ADC function of the CPU.

The RTU card 12 communicates with the CPU of the amplifier by RS-485 in order to sequentially start up the amplifier's booster circuit after power is supplied to the CPU of the amplifier at the time of starting the amplifier, Command.

The amplifier card 13 may be equipped with a boosting circuit, a current limiting circuit, a D-Class amplifier IC, a CPU, an RS-485 driver, a current sensor, an OLED display, and a volume controller.

When the amplifier card 13 receives the step-up circuit start command transmitted from the CPU of the RTU card 12, the power supply of the battery 14 is connected to the path of the NTC thermistor of the current limiting circuit to charge the capacitor of the step- The inrush current can be minimized by connecting a direct path between the battery 14 power supply and the capacitor.

In addition, the amplifier card 13 is connected to a speaker, and a circuit capable of automatically shutting off power when the speaker is short-circuited to the speaker line can be mounted.

In addition, the amplifier card 13 measures the amount of current output to the speaker line during operation and reports it to the CPU of the RTU card 12 via RS-485 communication.

The configuration of the remote audio broadcasting apparatus of the present invention will be described with reference to FIG.

The present invention relates to a remote audio broadcasting apparatus and includes a communication unit 100, a memory unit 110, an amplification unit 120, a power supply unit 130, and a control unit 140.

The broadcasting apparatus includes a communication unit 100 for communicating with a control source at a remote location, an amplification unit 120 for spreading a voice signal generated or transmitted as a voice signal into sound in the air, a communication unit 100, and an amplification unit 120 A memory unit 110 for storing and browsing information necessary for broadcasting, a battery and a charging circuit using solar power as a power source, And a power supply unit 130 that receives power from the power supply line and converts the power to DC electricity to supply power.

The communication unit 100 receives broadcast information transmitted from a remote place. The broadcast information may be voice data, a coded signal, a start signal, or the like. The control unit 140 receives the cleanup information received from the communication unit 100.

The communication unit 100 may communicate with one or more of commercial wireless mobile communication (CDMA 2G, 3G, 4G, 5G) or Ethernet communication or PSTN, and the wired telephone network may be an analog voice telephone, Mobile communication and Ethernet communication can be accommodated in voice mode and data mode communication at the same time based on data type.

The memory unit 110 may store the broadcast information received from the communication unit 100 or may store the broadcast information. At this time, the broadcast information may be stored by matching the voice data by code. For example, a unique number '1' is stored in correspondence with the voice data related to the earthquake, and the unique number '2' is stored in correspondence with the voice data related to the fire. In addition, the unique number '3' is also matched with the voice data related to the flood. Also, the broadcast information may be information on a voltage range in which the power source unit 130 operates.

The memory unit 110 includes a nonvolatile semiconductor memory such as an SD card or a USB flash memory for storing voice information, control signals, setting information, and other information required for the operation, which are received by the broadcasting apparatus. The memory unit 110 may be detachable or fixed to a circuit board.

The amplification unit 120 may include a plurality of amplification modules. The amplification unit 120 amplifies and outputs a voice signal with a power signal large enough to be driven by the speaker 150. This will be described below in detail with reference to FIGS. 4 and 5. FIG.

The power supply unit 130 supplies power to the amplification unit 120. The power source 130 may be an external power source or may be a battery mounted inside. If the power source unit 130 is a battery, at least one of the power source unit 130 may be provided in the remote audio-visual device.

When the power supplied to any one of the amplification modules to which power is supplied is stabilized, the controller 140 supplies power to the next one of the amplification modules, .

In addition, after the initial startup is completed, the controller 140 determines the number of amplification modules that can be supplied to the reference supply voltage according to the battery output state, and supplies power to the amplification modules of the determined number .

In addition, when the power supply of the battery is supplied to the control unit 140, the control unit 140 controls the power supply to the amplification module through the current limiting device until the current supplied to the amplification module reaches the output current, The current supplied to the amplification module is controlled to be supplied through the first path so that the current supplied to the module gradually increases and when the current supplied to the amplification module reaches the output current, So that power is supplied via the second path.

The control unit 140 converts the analog voice signal into voice data, which is a digital signal, and transmits the voice data to the amplification unit 120.

The speaker 150 is connected to the amplification unit 120 and outputs amplified voice data from the amplification unit 120. In this case, the speaker 150 may be connected to a plurality of amplification modules to be connected to each other, and a plurality of amplification modules may be connected to one speaker 150.

Referring to FIGS. 4 and 5, the amplifying unit 120 includes a plurality of amplifying modules 200. The plurality of amplification modules 200 are coupled to the card slots of the main board 11, respectively. In addition, the main board 11 is connected to a control unit. In addition, the main board 11 and the amplifying unit are connected to a power supply unit and are supplied with power from the power supply unit.

The amplification module 200 may include a CPU, a high voltage power supply, an amplification circuit, and a sensor unit.

The CPU of the amplification module reads the voltage and current values of the amplification module measured by the sensor unit and transmits the voltage and current values to the control unit 140.

The sensor unit may be a current sensor and a voltage sensor capable of detecting an output state of the amplifying circuit.

The high-voltage power supply unit boosts the voltage output from the battery to a voltage usable in the amplifying circuit so as to supply power required for amplification in the amplifying circuit. The high-voltage power supply unit may be a booster circuit.

The control unit 140 controls the power supply to any one of the amplification modules 200. When the voltage of the power supply unit 130 reaches a predetermined voltage range, .

Referring to FIG. 6, in the present invention, when the power of the power supply unit 130 is supplied to any one of the amplification modules 200, the current VM ap of the power supply unit 130 increases. At this time, in the capacitor of the amplification module 200, the current AM1 is abruptly increased, so that the terminal voltage VM bp of the power supply unit 130 is lowered and then regained to a constant voltage again. However, since the power supply unit 130 sequentially supplies power by dividing the amplification module having the capacitor into a plurality of amplifiers, the voltage drop of the power supply unit 130 is lower than that of the conventional large capacity capacitor, The instability due to the voltage drop phenomenon can be alleviated.

Referring to FIG. 7, when power is connected from the battery to the amplifier module 1 (any one of the amplification modules), the current supplied from the battery increases, and the terminal voltage of the battery decreases. Then, after the terminal voltage of the battery again reaches a predetermined voltage range and a specific time (T1) elapses, the power is again connected to the amplifier module 2 (another amplification module). Then, the current supplied by the battery increases, and the terminal voltage of the battery drops. Thereafter, as described above, after the terminal voltage of the battery has recovered to the predetermined voltage range and the specific time T2 has elapsed, the power of the battery is connected to another amplifier module 3. In this way, when the power of the battery is sequentially connected to the plurality of amplification modules one by one, the terminal voltage of the battery drops, but the instability phenomenon of the power supply at the initial startup of the broadcasting apparatus can be alleviated.

When the terminal voltage of the power supply unit 130 reaches a preset voltage range, the control unit 140 supplies power to another amplification module 200 while maintaining the power supplied to the current amplification module 200 . In this way, the control unit 140 controls each amplification module 200 to be sequentially supplied with power.

In contrast, when the power of the power supply unit 130 is out of a preset range after the power supply to the entire amplification module 200 is completed, the controller 140 controls the power supplied to the amplification module 200 one by one To be sequentially blocked. More specifically, the control unit 140 measures the voltage of the power supply unit 130 after power is supplied to all the amplification modules 200. When the voltage of the power supply unit 130 falls below a predetermined voltage, The amplification module 200 is sequentially turned off one by one. The control unit 140 sets a predetermined voltage range for each of the amplification modules 200 to which power is supplied. For example, if the voltage of the power supply unit 130 is lowered from 24V to 20V after power is supplied to all the amplification modules 200, the control unit 140 controls one amplification module 200 of the plurality of amplification modules 200 200). Also, if the voltage of the power supply unit 130 drops from 20 V to 18 V, the controller 140 cuts off the power supplied to another amplification module 200. In this way, the number of amplification modules 200 to which power is supplied for each output voltage level of the power supply 130 is also set. The control unit 140 determines the difference between the initial startup sequence of each amplification module 200 and the startup time between the amplification modules 200. The control unit 140 also uses a CPU (RS-485 method). In addition, the CPU of the control unit 140 commands the CPU of each amplification module to start the power supply circuit.

A circuit diagram of the amplification module of the present invention will be described with reference to Fig.

The amplifying module includes an amplifying circuit 210, a voltage regulating circuit 220, a first capacitor 230, a second capacitor 240, and a current limiting circuit 250.

The amplifying circuit 210 amplifies the voice data and outputs the amplified voice data to the speaker 150.

The voltage regulating circuit 220 is connected between the power supply 130 and the amplifying circuit 210. The voltage regulating circuit 220 receives power from the power supply 130 and adjusts the voltage to be usable in the amplifying circuit 210. For example, when the voltage used in the amplification circuit 210 is higher than the voltage output from the power supply unit 130, a boosting circuit may be connected between the amplification circuit 210 and the power supply unit 130. The boosting circuit receives the voltage output from the power supply unit 130, boosts the voltage to a voltage usable in the amplification circuit 210, and outputs the boosted voltage.

The first capacitor 230 is connected between the voltage regulating circuit 220 and the power supply unit 130.

A second capacitor 240 is coupled between the amplification circuit 210 and the voltage regulation circuit 220.

The current limiting circuit 250 is connected between the first capacitor 230 and the power supply unit 130 and controls the voltage regulating circuit 220 and the amplifying circuit 250 according to whether the first and second capacitors 240 are charged 210, respectively.

More specifically, the current limiting circuit 250 may include a current limiting element 253, a first relay unit 251, and a second relay unit 252.

The current limiting element 253 changes the resistance according to the temperature change to limit the current. Specifically, the current limiting element 253 is a thermistor element that has a high resistance at room temperature at the beginning, and generates heat when the current begins to flow, thereby lowering the resistance. In the present invention, a thermistor having a resistance of 20 ohms at room temperature was used.

The first relay unit 251 is connected in series with the current limiting element 253.

The second relay unit 252 is connected to the first relay unit 251 in parallel.

The first relay unit 251 and the second relay unit 252 are connected to the control unit and controlled by the control unit. Specifically, the CPU 141 of the control unit turns on the first relay unit 251 and turns off the second relay unit 252 at an initial startup. At this time, the current limiting element 253 connected in series with the first relay unit 251 initially has a large resistance so that the current does not flow slowly, but the forward term is gradually lowered, and the current is slightly blurred. When the current starts flowing in the current limiting element 253, the first and second capacitors 130 and 140 begin to be charged. The current supplied to the voltage regulating circuit 220 and the amplifying circuit 210 is interrupted while the first and second capacitors 130 and 140 are being charged. The CPU 141 of the control unit turns on the second relay unit 252 and turns off the first relay unit 251 when the first and second capacitors 130 and 140 are charged, And supplies the current to the voltage regulating circuit 220 and the amplifying circuit 210.

That is, the current limiting circuit 250 supplies the currents of the specific current amount or less to the capacitors 130 and 140 of the boosting circuit for a specific period of time through the current limiting element 253 at the time of initial startup, and the capacitors 130 and 140 And supplies the current through the second relay unit 252 without passing through the current limiting element 253 when charged. At this time, the amount of the specific current or less may be the amount of current for which the boosting circuit and the amplifying circuit 210 are not driven, and may be the time for charging the capacitor for a specific time. The time for supplying the current through the current limiting element 253 is determined by a program mounted on the flash memory of the control unit CPU and controls the first and second relay units 151 and 152. [

Next, a description will be given of a voice mode method and a data mode method, which can improve the performance of a battery by reducing the data transmission amount of the remote audio broadcasting apparatus of the present invention.

The voice mode method will be described with reference to Figs. 4 and 9. Fig.

At a remote location, a telephone is connected through a wired telephone network or commercial wireless communication (CDMA 2G / 3G / 4G / 5G) to a remote audio broadcasting apparatus (S10). At this time, the remote site encodes a caller identification (CID) and transmits the message to a DTMF code or a problem message (SMS). In addition, the caller identification number (CID) may combine a control code (broadcast volume, broadcast time) and a unique number.

The remote audio broadcasting apparatus receives broadcast information transmitted from the remote site through the communication unit 100 (S11). Here, the broadcast information is information in which unique numbers and voice data are matched.

The control unit 140 analyzes the broadcast information received from the communication unit 100, and the memory unit 110 stores the broadcast information. The control unit 140 searches for a unique number previously stored in the memory unit 110 matching the unique number of the received broadcast information (S12).

At this time, if the unique number received from the remote place matches the unique number stored in the memory unit 110, the control unit 140 transmits the search result to the remote site (S13). Thereafter, the telephone call connection with the remote place is disconnected (S14), and the voice data stored in advance matching with the searched unique number is broadcast (S15). More specifically, the control unit 140 reads the voice data stored in the memory unit 110, which matches the received unique number. The controller 140 decodes the voice data of the digital signal into a voice waveform signal and outputs the decoded voice data to the amplifying unit 120. The amplification unit 120 amplifies the voice data of the voice waveform signal and outputs the amplified voice data to the speaker.

Referring to FIG. 11, the control unit 140 outputs a broadcast (S15) and measures battery power status in real time to determine battery power status (S30). That is, the control unit 140 determines the power state of the battery according to the broadcast output, and controls the battery power by shutting off the power supplied to the plurality of amplification modules. At this time, the control unit 140 determines whether the battery power according to the broadcast output is insufficient (S31). If the battery power according to the broadcast output is proper, the broadcast output is maintained as before (S32). Conversely, if it is determined that the battery power is insufficient due to the broadcast output, the battery power is secured (S33). For example, it is assumed that the controller 140 reads the pre-stored voice data and broadcasts the voice data to the speaker through the ten amplification modules. At this time, when the battery power is insufficient, the power is cut off by one amplification module of the power supplied to the ten amplification modules, and battery power is supplied to nine amplification modules to broadcast the output. In this way, the controller 140 monitors the power of the battery in real time, and when the battery power is insufficient for the broadcast output, the controller 140 blocks power supplied to the plurality of amplification modules one by one to secure battery power.

On the other hand, if the unique number received from the remote place does not match the unique number stored in the memory unit 110, the control unit 140 maintains the telephone conversation with the remote place.

At this time, the control unit 140 determines the power state of the battery and calculates the amount of battery consumption according to the voice call of the user (S16). In addition, the controller 140 determines whether the battery power is low due to the voice call through the calculated battery consumption amount and the current battery power state (SOC) (S17). At this time, if the controller 140 determines that the battery power is insufficient even if the user makes a voice call, the controller 140 outputs and stores the voice of the user as a broadcast (S18). Thereafter, the controller 140 transmits the broadcast result to a remote location and terminates the call (S19).

In addition, when the controller 140 determines that the battery power is insufficient, the controller 140 secures power of the battery (S17 '). For example, assuming that the power consumption of one amplification module is '1' and the total power consumption is '10' when 10 amplification modules are used. It is assumed that the power consumption calculation value according to the voice call is '2'. At this time, when the amount of battery power is 10, the controller 140 cuts off the power of the two amplification modules in order to make a voice call, thereby securing the battery power according to the voice call. That is, when the battery power is insufficient for the voice call, the controller 140 blocks the amplification module by insufficient power to secure the battery power.

Thereafter, when the battery power is adequate or secured, the remote site transmits the voice of the user to the remote audio broadcasting apparatus. The remote audio broadcasting apparatus stores the user's voice in the memory unit 110 and simultaneously broadcasts the voice (S18). The control unit 140 of the remote audio broadcasting apparatus digitally samples the analog voice signal of the user and stores the voice data in the memory unit 110 by matching with the unique number, And outputs a broadcast voice through a speaker through a sound. At this time, the remote audio broadcasting apparatus may include a structure in which a codec IC or a CPU processes an audio codec function for storing sampled digital voice data in a memory. Thereafter, the controller 140 transmits the broadcast result to a remote location and terminates the call (S19).

Referring to FIG. 11, the controller 140 outputs a broadcast (S18) and measures battery power status in real time to determine battery power status (S30). In addition, the control unit 140 measures the battery power state at the same time that the broadcasting is outputted, and transmits the measurement result to the remote site. That is, the control unit 140 determines the power state of the battery according to the broadcast output, and controls the battery power by shutting off the power supplied to the plurality of amplification modules. At this time, the control unit 140 determines whether the battery power according to the broadcast output is insufficient (S31). If the battery power according to the broadcast output is proper, the broadcast output is maintained as before (S32). Conversely, if it is determined that the battery power is insufficient due to the broadcast output, the battery power is secured (S33). For example, the control unit 140 assumes that a user's voice is broadcasted through a speaker through ten amplification modules. At this time, when the battery power is insufficient, the power is cut off by one amplification module of the power supplied to the ten amplification modules, and battery power is supplied to nine amplification modules to broadcast the output. In this way, the controller 140 monitors the power of the battery in real time, and when the battery power is insufficient for the broadcast output, the controller 140 blocks power supplied to the plurality of amplification modules one by one to secure battery power.

In this voice mode, the amount of communication between the remote site and the remote audio broadcasting apparatus increases according to the length of the analog voice signal. According to the present invention, when the same broadcast is repeated, since the previously stored voice data is broadcast without receiving the voice data every number of times, the amount of communication can be remarkably reduced and battery power consumption can be reduced.

Next, the data mode method will be described with reference to FIG. 4 and FIG.

The remote audio broadcasting apparatus receives a broadcast command packet from a remote place (S20). More particularly, it transmits broadcasting information (digital data) through a commercial wireless communication (CDMA 2G / 3G / 4G / 5G) or Ethernet to a remote audio broadcasting apparatus at a remote place. The remote audio broadcasting apparatus receives digital data through the communication unit 100 and stores the digital data in the memory unit 110. [ The broadcast voice messages of the digital data format are stored in the memory unit 110 in pairs with unique numbers. The unique number is a number designated at a remote location. The unique number can be transmitted as a data packet upon connection of data mode of commercial wireless communication or through Ethernet connection. Thereafter, the controller 140 analyzes the received broadcast command packet (S21).

In addition, the control unit 140 searches for a unique number previously stored in the memory unit 110 matching the unique number of the digital data transmitted from the remote site (S22).

At this time, if the unique number received from the remote place matches the unique number already stored in the memory unit 110, the control unit 140 transmits the inquiry to the remote place (S23). Also, the controller 140 reads the voice data previously stored in the memory unit 110, which matches the received unique number. The control unit 140 decodes the voice data, which is a digital signal previously stored in the memory unit 110, into a voice waveform signal, and outputs the voice waveform signal to the amplification unit 120. The amplification unit 120 amplifies the voice data of the voice waveform signal and outputs it to the speaker (S24).

Referring to FIG. 11, the control unit 140 outputs a broadcast (S24), measures the battery power state in real time, and determines the battery power state (S30). In addition, the control unit 140 measures the battery power state at the same time that the broadcasting is outputted, and transmits the measurement result to the remote site. That is, the control unit 140 determines the power state of the battery according to the broadcast output, and controls the battery power by shutting off the power supplied to the plurality of amplification modules. At this time, the control unit 140 determines whether the battery power according to the broadcast output is insufficient (S31). If the battery power according to the broadcast output is proper, the broadcast output is maintained as before (S32). Conversely, if it is determined that the battery power is insufficient due to the broadcast output, the battery power is secured (S33). For example, the control unit 140 assumes that pre-stored voice data is broadcasted through a speaker through ten amplification modules. At this time, when the battery power is insufficient, the power is cut off by one amplification module of the power supplied to the ten amplification modules, and battery power is supplied to nine amplification modules to broadcast the output. In this way, the controller 140 monitors the power of the battery in real time, and when the battery power is insufficient for the broadcast output, the controller 140 blocks power supplied to the plurality of amplification modules one by one to secure battery power. Then, the controller 140 transmits the broadcast result to the remote site.

On the contrary, if the unique number received from the remote place does not match the unique number previously stored in the memory unit 110, the controller 140 calculates the amount of battery consumption according to the data communication (S26). More specifically, the controller 140 calculates the power consumption of a battery consumed when data is received from a remote place through data capacity and communication time.

In addition, the controller 140 determines whether the battery power is low due to the data communication through the battery consumption amount according to the calculated data communication and the current battery power state (SOC) (S27). At this time, if it is determined that the battery power is not sufficient even though the data communication is performed, the controller 140 requests and receives voice data matched with the unique number from the remote place (S28).

When the controller 140 determines that the battery power is insufficient at the time of data communication, the controller 140 secures power of the battery (S27 '). For example, assuming that the power consumption of one amplification module is '1' and the total power consumption is '10' when 10 amplification modules are used. It is assumed that the power consumption calculation value according to data communication is '2'. At this time, when the amount of battery power is 10, the controller 140 cuts off the power of the two amplification modules to secure the battery power according to the data communication in order to perform data communication. That is, when the battery power is insufficient for the data communication, the controller 140 blocks the amplification module as much as the insufficient power source to secure the battery power.

Thereafter, when battery power is proper or secured, voice data is requested and received from a remote place (S29). And transmits the voice data requested by the control unit 140 of the remote audio broadcasting apparatus to the remote site. Also, the remote audio broadcasting apparatus receives voice data transmitted from a remote location, stores the voice data in the memory unit 110, and simultaneously outputs the voice data (S29).

Referring to FIG. 11, the controller 140 outputs a broadcast (S29) and simultaneously measures the battery power state in real time to determine the battery power state (S30). In addition, the control unit 140 measures the battery power state at the same time that the broadcasting is outputted, and transmits the measurement result to the remote site. That is, the control unit 140 determines the power state of the battery according to the broadcast output, and controls the battery power by shutting off the power supplied to the plurality of amplification modules. At this time, the control unit 140 determines whether the battery power according to the broadcast output is insufficient (S31). If the battery power according to the broadcast output is proper, the broadcast output is maintained as before (S32). Conversely, if it is determined that the battery power is insufficient due to the broadcast output, the battery power is secured (S33). For example, the control unit 140 assumes that the received voice data is broadcasted through a speaker through ten amplification modules. At this time, when the battery power is insufficient, the power is cut off by one amplification module of the power supplied to the ten amplification modules, and battery power is supplied to nine amplification modules to broadcast the output. In this way, the controller 140 monitors the power of the battery in real time, and when the battery power is insufficient for the broadcast output, the controller 140 blocks power supplied to the plurality of amplification modules one by one to secure battery power. In addition, the controller 140 transmits the broadcasting result to the remote site (S25).

The reason why data communication and voice talk time are reduced in a disaster situation through the present invention is as follows.

In a disaster situation, all communication entities that use a commercial communication network (kt, sk, etc.) together have a problem in that the data transmission speed drops sharply due to the use congestion (security check and disaster response) There is a tendency. This has already occurred in many disasters (Gyeongju earthquake, Yeonpyeong Island). In addition, in the existing system operation method which requires a lot of data communication, if communication is lost during transmission, there is a waste of time to re-connect and re-start the broadcasting process again from the beginning.

In the present invention, since it is replaced by a very short code transmission, if only a few bytes of data are transmitted, the probability of broadcasting in a disaster situation (general broadcast data amount) / (length of code) Compared to a system that transmits voice bytes, it has the effect of reducing the opportunity cost by 10 millionths.

That is, according to the present invention, when the voice communication time or the amount of data communication is reduced through data reduction, the probability of successfully performing the broadcast in a poor communication quality such as a disaster situation is reduced by the ratio of voice communication time or data communication amount .

Next, a method of determining battery performance using the remote audio broadcasting apparatus of the present invention will be described.

The remote audio broadcasting apparatus can be used as a power source by incorporating a battery to use a broadcast function even in a bad condition such as power failure or rain. Also, since the performance of the battery deteriorates depending on the usage period and the usage amount, the performance evaluation is required for smooth use.

The control unit 140 transmits the measured voltage of the power source unit 130 to the remote location through the communication unit 100. When the measured voltage of the power source unit 130 is out of the preset consumption voltage pattern, It is determined that the power supply unit 130 is abnormal, and the determination information is transmitted to the remote site.

More specifically, the present invention may include a voltage sensor circuit for checking the performance of a battery. The voltage sensor circuit measures a battery voltage during a discharge in which a voltage between a negative terminal and a positive terminal of the battery (hereinafter referred to as a battery voltage) is connected to a battery voltage in a state in which there is no load or in a standby state and the electricity is consumed.

The battery voltage with the load connected must be tested under the same conditions for each test to evaluate battery performance. At this time, the load condition can be implemented by driving the amplifier for the same time in the controller 140.

The memory unit 110 may store time information and procedure information so that the user can test a desired battery load at a desired time. In addition, the memory unit 110 may store the voltage information of the battery performance. The voltage information may be battery voltage information for each battery usage period. The voltage of the battery gradually decreases depending on the period of use and the number of charge / discharge cycles. Here, the voltage information may be a general voltage pattern depending on the use period of the battery and the number of charge / discharge cycles.

The controller 140 may automatically measure the voltage of the battery through the time information and the procedure information of the battery load test stored in the memory unit 110. [ Also, the controller 140 may transmit the measured voltage of the battery to a remote location.

The controller 140 may compare the measured battery voltage with the battery voltage information previously stored in the memory unit 110 to evaluate the battery performance. Specifically, when the measured battery voltage is lower than the battery voltage information previously stored in the memory unit 110, the controller 140 determines that the battery performance is abnormal and transmits battery abnormality information to a remote place. Battery measurements measure the voltage before, during, and after each connection to the load. At this time, the pattern of the battery voltage is compared with the battery pattern previously stored in the memory unit 110, and if the battery pattern is different from the previously stored battery pattern, the performance of the battery is determined to be abnormal and transmitted to the remote site.

The voltage of the battery may be measured by a program stored in the control unit 140, or may be received from a remote place by a battery load test command.

The test results can be stored in memory and the stored data can be viewed by the post-users.

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. Of course, such modifications are within the scope of the claims.

[Reference Numerals]

10: Case

11: Motherboard

12: RTU card

13: Amplifier card

14: Battery

100:

110: memory unit

120:

130:

140:

141: CPU of the control unit

150: Speaker

200: Amplification module

210: Amplification circuit

220: Voltage regulation circuit

230: first capacitor

240: second capacitor

250: Current limiting circuit

251: first relay part

252: second relay part

253: NTC thermistor

Claims (10)

A communication unit (100) for receiving broadcast information transmitted from a remote place;
A memory unit 110 for storing the broadcast information transmitted from the communication unit 100 or storing the broadcast information;
An amplification unit 120 composed of a plurality of amplification modules 200 and amplifying the voice data among the broadcast information and outputting the amplified voice data to the speaker 150;
A power supply unit 130 for supplying power to the amplification unit 120; And
A control unit 140 for measuring the voltage of the power supply unit 130 and sequentially controlling power supply from the power supply unit 130 to each of the amplification modules 200;
Lt; / RTI >
Each of the plurality of amplification modules 200 includes a high voltage power supply unit and an amplification circuit. The high voltage power supply unit supplies a voltage of the power supply unit 130 to a voltage usable in the amplification circuit And supplies the boosted voltage to the amplifying circuit,
The control unit 140 supplies power to the first amplification module of the plurality of amplification modules 200 and then the voltage of the power supply unit 130 drops to restore a predetermined voltage range, After the elapse of the time T1, while the power of the power supply unit 130 supplied to the first amplification module is maintained, the power of the power supply unit 130 is supplied to the second amplification module, and power is supplied to the second amplification module The voltage of the power source unit 130 is lowered and the predetermined voltage range is recovered. After a predetermined time T2 elapses, the power of the power source unit 130 supplied to the second amplification module is maintained, The voltage drop of the power supply unit 130 is reduced by supplying power to the plurality of amplification modules 200 by supplying power to the plurality of amplification modules by connecting power to the module,
The controller 140 adjusts the number of amplification modules 200 to which power is supplied for each of the output voltage steps of the power supply 130 after power is supplied to the entire plurality of amplification modules 200, So that the power of the remote control unit (130) can be secured.
delete delete The method according to claim 1,
The amplification module (200)
An amplifier circuit (210) for amplifying the voice data and outputting the amplified voice data to the speaker (150);
A voltage regulation circuit 220 receiving power from the power supply unit 130 and adjusting the voltage to be usable in the amplification circuit 210;
A first capacitor 230 connected between the voltage regulating circuit 220 and the power supply unit 130; And
A second capacitor 240 connected between the amplification circuit 210 and the voltage regulation circuit 220;
The first and second capacitors 130 and 140 are connected between the first capacitor 230 and the power supply 130 and are supplied to the voltage regulating circuit 220 and the amplifying circuit 210 according to whether the first and second capacitors 130 and 140 are charged A current limiting circuit 250 controlled by the controller 140 to supply or limit a current;
The remote audio broadcasting apparatus comprising:
5. The method of claim 4,
The current limiting circuit 250
A current limiting element 253 for limiting the current by changing the resistance according to the temperature change;
A first relay unit 251 connected in series with the current limiting element 253; And
And a second relay unit 252 connected in parallel with the first relay unit 251,
Wherein the first relay unit (251) and the second relay unit (252) are controlled by the controller (140).
6. The method of claim 5,
The control unit 140
The first relay unit 251 is turned on and the second relay 252 is turned off so that the first and second capacitors 130 and 140 are charged while the voltage regulation circuit 220 and the amplification Interrupts the current supplied to the circuit 210,
When the first and second capacitors 130 and 140 are charged, the second relay unit 252 is turned on and the first relay unit 251 is turned off so that the voltage regulating circuit 220 and the amplifying circuit 210 So as to supply a current to the remote audio broadcasting apparatus.
The method according to claim 1,
The control unit 140
Wherein the control unit compares the unique number received from the remote unit through the communication unit (100) with the unique number of the broadcast information pre-stored in the memory unit (110), and determines whether to output the broadcast.
8. The method of claim 7,
The control unit 140
If the unique number received from the remote site coincides with the unique number previously stored in the memory unit 110,
And transmits the voice data previously stored in the memory unit (110) matching the pre-stored unique number to the amplification unit (120).
8. The method of claim 7,
The control unit 140
If the unique number received from the remote site does not match the unique number previously stored in the memory unit 110,
Wherein the remote audio broadcasting apparatus requests audio data matched with the unique number from the remote site or converts the real-time audio received from the remote site into audio data and transmits the audio data to the amplification unit (120).
The method according to claim 1,
The control unit 140
And transmits the measured voltage of the power supply unit 130 to the remote site through the communication unit 100,
When the measured voltage of the power source unit (130) is out of the preset consumption voltage pattern, it determines that the power source unit (130) is abnormal and transmits the determination information to the remote location.

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