KR102346687B1 - Wireless communication speaker system with built-in emergency batteries - Google Patents

Abstract

The present invention relates to a wireless broadcasting speaker system with a built-in emergency battery, which comprises: a walkie-talkie; a DC rectifier circuit which rectifies commercial AC power supplied from the outside into DC power; a DC charging circuit which charges an emergency battery with the DC power supplied from the DC rectifier circuit; the emergency battery which supplies power so that an emergency broadcast can be performed in the event of an emergency after being charged with DC power; a power relay which activates power supply from the emergency battery in the event of an emergency; a radio receiver which receives an emergency broadcast transmitted from the walkie-talkie; an audio amplifier which amplifies audio received by the radio receiver; and a speaker unit which outputs a broadcast received from the audio amplifier. According to a wireless broadcasting speaker of the present invention, it is possible to directly broadcast with a speaker equipped with a radio receiver through a walkie-talkie when a cable is short-circuited, and to automatically switch to a built-in emergency battery especially in the event of a power outage and broadcast to broadcast easily and quickly in an emergency situation.

Description

Wireless broadcasting speaker system with built-in emergency batteries {Wireless communication speaker system with built-in emergency batteries}

The present invention relates to a wireless broadcasting speaker system having a built-in emergency battery, and more particularly, a speaker equipped with a wireless receiver can be broadcast directly through a walkie-talkie when a cable is short-circuited. It relates to a wireless broadcasting speaker system designed to automatically switch and broadcast.

The general emergency broadcasting speaker in the building is to broadcast the entire broadcast through the amplifier installed in the control center such as the basement of the building. From the control center to the emergency broadcasting speakers installed on each floor of the building, they are connected by wire and are broadcast through each speaker.

However, there is a problem in that emergency evacuation broadcasting cannot be broadcast through each emergency broadcasting speaker in the building if a fire occurs in the control center, workers are absent from the control site, a broadcasting cable is short-circuited, or a power outage occurs. see Fig. 3)

Korean Patent Registration No. 10-2214729 has been registered.

The present invention has been devised to solve all the problems of the prior art as described above,

In case of a cable short circuit, a speaker equipped with a wireless receiver can be broadcast directly with a walkie-talkie, and in case of a power outage, the emergency wireless broadcasting can be broadcast easily and quickly in an emergency designed to automatically switch to the emergency battery built into the speaker. to provide speakers.

The present invention for achieving the above technical object provides a wireless broadcasting speaker designed to enable broadcasting by automatically switching to an emergency battery provided inside the speaker in the event of a power outage.

The present invention provides a speaker capable of wirelessly emergency broadcasting regardless of a worker's location.

The present invention provides a speaker capable of emergency broadcasting by a firefighter using a walkie-talkie from the outside in the event of a fire in a building.

The present invention provides a speaker capable of setting an individual ID of a speaker and setting a group password in order to prevent external crosstalk.

The present invention provides a speaker capable of individually broadcasting only to a specific floor as well as broadcasting to all floors in a building.

The present invention provides a speaker in which the volume of the speaker can be directly adjusted, and the volume can be set high in a place where there are many people, such as a lobby, according to an installation location.

The present invention provides a speaker capable of directly checking the reception state of each speaker.

According to the wireless broadcasting speaker according to the present invention, a speaker equipped with a wireless receiver can be directly broadcast with a walkie-talkie when a cable is short-circuited. You can broadcast easily and quickly in any situation.

1 is a block diagram of an emergency broadcasting speaker according to the present invention;
2 is an embodiment of an emergency broadcast speaker system according to the present invention;
3 is an embodiment of a conventional general emergency broadcast speaker system;

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

Terms including an ordinal number such as second, first, etc. may be used to describe various elements, but the elements are not limited by the terms.

The terms used herein are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and 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 should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of an emergency broadcasting speaker according to the present invention.

The present invention relates to a wireless broadcasting speaker with a built-in emergency battery that can easily and quickly broadcast in emergency situations such as fire, absence of workers, short circuit of broadcasting cable, power outage, amplifier failure, and the like. Such a wireless broadcasting speaker is configured to include a DC rectifier circuit, a DC charging circuit, an emergency battery, a power relay, a power SW, a step-down circuit, a radio receiver, a filter, an audio amplifier and a speaker unit.

The DC rectifier circuit rectifies the 220 volt commercial AC power supplied from the outside into 24 volt DC power.

In normal times, the internal broadcasting is performed through the speaker by the DC power of 24 volts, and the DC power is charged to the emergency battery with 24 volts for use in an emergency.

The DC charging circuit charges the DC power supplied from the DC rectifier circuit to the emergency battery, and prepares for broadcasting with the emergency battery in case of a power outage.

The power relay operates the wireless broadcasting speaker by supplying 24 volts of DC power, which is a rectified DC power from commercial AC power, to the audio amplifier.

On the other hand, since commercial AC power supplied from the outside is interrupted during a power outage, the power relay turns on the power supply connected from the emergency battery to supply DC power from the emergency battery to the wireless receiver and audio amplifier.

The step-down circuit steps down the 24 volt DC power supplied from the emergency battery to 7.4 volts and supplies it to the radio receiver.

The wireless receiver receives the emergency broadcast transmitted from the radio and supports it to be sent through the wireless broadcast speaker, and the operating voltage is 7.4 volts.

Noise is removed from the audio signal received through the radio receiver through a filter.

The filtered audio is amplified through the amplifier, and the volume is adjusted by the volume switch and broadcast through the speaker unit. The operating voltage of the amplifier is 24 volts.

The usage aspect of the wireless broadcast speaker system according to the present invention can be seen through the embodiment of FIG. 2 .

The wireless broadcasting speaker system according to the present invention can broadcast the audio input through the external input terminal (AUX) in the control center through the audio amplifier in normal times,

In case of an emergency such as a cable cut or a power outage, the emergency broadcast transmitted from the radio can be received through the radio receiver and broadcast directly to the entire building.

In the wireless broadcasting speaker system according to the present invention, unlike a speaker that can broadcast only at a control center in the past, a worker with a walkie-talkie can directly broadcast from any location in the building regardless of the worker's location.

Workers who move while broadcasting with walkie-talkies can directly check the audio output from each speaker with their ears, so they can directly inspect and repair speakers that do not output audio due to a malfunction.

In the wireless broadcasting speaker system according to the present invention, a firefighter dispatched to the scene of a fire can make an emergency broadcast through a walkie-talkie outside the building.

For example, even if it is impossible to enter the building due to a fire, it is possible to broadcast the progress of the fire and emergency evacuation tips to the people remaining inside the building through the radio through the emergency broadcast through the radio speaker.

The wireless broadcasting speaker system according to the present invention can perform individual broadcasting for each speaker by setting and storing the individual ID of each speaker in the radio, and by grouping a plurality of speakers and storing the ID for each group, wireless broadcasting through the speaker for each group can also

In addition to broadcasting the entire building, it is possible to individually broadcast wirelessly only to a specific floor by using the individual ID and grouping of each speaker.

In particular, individual ID setting and grouping of each speaker by a walkie-talkie can prevent cross-talk of external radio waves, which is more useful in emergency situations.

The wireless broadcasting speaker according to the present invention is provided with a volume control switch in each speaker, and depending on the installation location, the volume can be individually set high in a place with a large floating population such as a lobby.

An embodiment of broadcasting through a wireless broadcasting speaker system having a built-in emergency battery according to the present invention is as follows.

- Communication method: DMR, DPMR

- Receiving frequency: VHF 136~174 MHZ, UHF 400~470 MHZ

- Amplifier output: 10W/20W/30W/50W/100W

- Amplifier power: 24V

- Speaker used: 4 ohm to 8 ohm

- Signal-to-noise ratio: 100db

According to the present invention emergency battery built-in wireless broadcasting speaker system,

Emergency evacuation broadcasts can be made through each emergency broadcasting speaker in the building even in the event of a fire in the control center, absence of workers at the control site, a short circuit in the broadcasting cable, or a power outage.

Claims (3)

It relates to a wireless broadcasting speaker with a built-in emergency battery that can easily and quickly broadcast in any emergency situation of fire, absence of workers, short circuit of broadcasting cable, power outage, or amplifier failure,
radios that allow workers with radios to broadcast directly from any location within the building, regardless of location;
DC rectifier circuit for rectifying commercial AC power supplied from the outside into DC power;
DC charging circuit for charging the emergency battery with the DC power supplied from the DC rectifier circuit at 24 volts;
an emergency battery that supplies power so that an emergency broadcast can be performed in case of an emergency after being charged with DC power;
Normally, the 24 volts of DC power supplied from commercial AC power is rectified into DC power to the audio amplifier to operate the wireless broadcasting speaker. a power relay that supplies power to the radio receiver and audio amplifier;
a radio receiver for receiving an emergency broadcast transmitted from the radio;
an audio amplifier for amplifying audio received by the radio receiver; and
A speaker unit for outputting the broadcast received from the audio amplifier; includes,
Further comprising a step-down circuit for supplying the radio receiver by stepping down the DC power supplied from the emergency battery,
A filter for removing noise from the audio signal received through the radio receiver; further comprising,
Workers who move while broadcasting with the walkie-talkie directly check the audio output from each speaker with their ears, and can directly inspect and repair the speaker that does not output audio due to a malfunction,
The step-down circuit steps down the 24-volt DC power supplied from the emergency battery to 7.4 volts and supplies it to the radio receiver, receives and broadcasts the emergency broadcast transmitted from the walkie-talkie,
The walkie-talkie stores the individual IDs of each speaker, and groups a plurality of speakers to store the group IDs, so that the walkie-talkie can perform wireless broadcasting for each speaker and wireless broadcasting through the speakers for each group, You can broadcast wirelessly only on a specific floor using the individual ID of each speaker and the ID of each group.
Speakers in densely populated areas further include a volume control switch to individually set the volume to high;
Communication of the radio is one of the DMR or DPMR method,
The receiving frequency of the radio receiver uses the VHF 136 ~ 174 MHZ or UHF 400 ~ 470 MHZ band,
Amplifier output is any one of 10W, 20W, 30W, 50W, and 100W,
The resistance of the speaker part is 4 ohms to 8 ohms, and the signal-to-noise ratio is 100 db,
In normal times, the control center broadcasts the audio input through the external input terminal (AUX), but in an emergency, the emergency broadcast transmitted from the walkie-talkie can be received through the radio receiver and broadcast to the entire building.
Even if firefighters who were dispatched to the scene of a fire cannot enter the building due to a fire, emergency broadcasts are made from the outside of the building through radios to inform the people remaining inside the building about the progress of the fire and emergency evacuation tips. A wireless broadcast speaker system with a built-in emergency battery, characterized in that it can.

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