KR101105395B1 - Public address system to which the electric power supplied due to enhanced structure of signal cable - Google Patents

Abstract

PURPOSE: An exclusive broadcasting system is provided to improve wiring work efficiency by enabling a user to connect a remote amplifier with a main body unit. CONSTITUTION: A power source supply unit(8) is installed at a main body unit. The power source supply unit supplies a power source at a remote amplifier. Mobile terminals are included in the remote amplifier and a speaker matrix. The mobile terminal provides predetermined elastic force. The both ends of a signal cable are connected to the mobile terminal of the speaker matrix and the remote amplifier. A voice signal is transmitted through the signal cable.

Description

PAB system that enables stable supply of power by improving signal cable structure {PUBLIC ADDRESS SYSTEM TO WHICH THE ELECTRIC POWER SUPPLIED DUE TO ENHANCED STRUCTURE OF SIGNAL CABLE}

The present invention relates to a public address system, and more particularly, it is possible to efficiently transmit and receive signals by improving the structure of a signal cable, and by using the signal cable to receive power from a main body, even if the remote electricity is disconnected, The present invention relates to a public address system capable of driving an amplifier.

In general, the public address broadcasting system refers to a system capable of performing broadcasting by dividing the entire desired area, floor, and zone in an apartment, an office building, or a building such as a hotel.

In the above-mentioned broadcasting system, in particular, a broadcasting system installed in a school provides a broadcasting device in a central broadcasting room, and connects a receiving device such as a speaker or a television to each classroom to broadcast in each class in the central broadcasting room.

In addition, as an example of such a broadcasting system, Korean Registered Patent No. 10-0756366 (name of the invention: digital plural PA system) and Korean Registered Utility Model No. 20-434460 (name of the invention: wired broadcasting network) Remote control administrative broadcasting system).

In the above public address broadcasting, the main body can be controlled remotely by providing a remote amplifier.

When broadcasting using the remote amplifier, there are a number of selection switches on the remote amplifier for setting the broadcasting zone, and the broadcasting zone is set and controlled using the remote amplifier.

However, in the case of the conventional public address system, as the broadcasting area increases, the number of switches must increase proportionally, and thus the number of wirings of the signal cable also increases.

In addition, since the power supply for driving the remote amplifier is supplied from a remote site that broadcasts, there is a problem that there is a limit to emergency broadcasting because the remote amplifier cannot be operated when the remote site becomes a power failure state.

In case of connecting the signal cable to the corresponding terminal of the remote amplifier and main unit, cut the length of the signal cable according to the design value, but if the distance between the remote amplifier and the main unit is longer than the design value, connect the signal cable. There is a difficult problem.

Accordingly, the present invention has been made to solve such a conventional problem, and an object of the present invention is to improve the structure of a signal cable connecting a remote amplifier and a main body, thereby stably maintaining a voice signal and a power supply even when the number of wires is disconnected. It is to provide a PA system that can transmit and receive.

In addition, by providing a movable terminal to the remote amplifier and the main body to provide a public address system that can easily connect the remote amplifier and the main body even when the length of the signal cable is longer than the design value.

The present invention also provides a public address system capable of smoothly performing emergency broadcasting by directly receiving power from a main body even when the remote site where the remote amplifier is arranged is in a power failure state.

Therefore, in order to achieve the above object, the present invention comprises at least one amplifier for amplifying a voice signal input from a sound source;

A speaker matrix connected to the amplifier to control the voice signal;

A main body connected to the speaker matrix and including at least one speaker for outputting sound by the voice signal;

A remote amplifier disposed remote from the main body and connected to the speaker matrix to remotely control the speaker matrix;

A power supply unit mounted to the main body to supply power to the remote amplifier;

Movable terminals provided to the remote amplifier and the speaker matrix, respectively, to impart a constant elastic force; And

Both ends are connected to the movable terminals of the remote amplifier and the speaker matrix, respectively, to provide a public address system including a signal cable serving as a passage for transmitting the voice signal.

PA system according to the present invention has the following advantages.

First, by improving the transmission signal system of voice signal and TX data, one set of 8 strands of cable can be used to connect the remote amplifier and the main body by the single-wire signal cable. .

Second, since the driving signal of the remote amplifier can be supplied from the main body by the improved signal cable, there is an advantage that the risk of interruption of broadcasting due to battery consumption of the remote amplifier is reduced.

Third, the female connector mounted on the remote amplifier and the main body is movable to improve the female connector, even when the length of the signal cable is short.

Fourth, by applying a touch screen method to the control panel of the remote amplifier, there is an advantage that can actively cope with the broadcast situation.

1 is a diagram schematically illustrating a structure of an PA system including a signal cable and a power supply unit according to an exemplary embodiment of the present invention.
FIG. 2 is a schematic diagram schematically showing an internal structure of the remote amplifier shown in FIG. 1.
3 is a view schematically showing a signal system transmitted by the signal cable shown in FIG.
4 is a perspective view illustrating a structure of a mobile terminal provided in the remote amplifier and the main body shown in FIG.
5 is a side cross-sectional view showing the structure of the mobile terminal shown in FIG.

Hereinafter, a public address broadcasting system according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the structure of a public address broadcasting system according to an embodiment of the present invention.

As shown, the public address system 1 proposed by the present invention includes: amplifiers (Amp; 5a, 5b, 5n) for amplifying a signal input from a sound source; A speaker matrix (M) for controlling signals of the amplifiers 5a, 5b, and 5n; The main body 26 includes at least one speaker 20a, 20b, and 20n connected to the speaker matrix M to output sound.

In addition, a remote amplifier 10 is connected to the main body 26 to remotely control the speaker matrix M.

At this time, the main body 26 is equipped with a power supply unit 8 to the speaker matrix M, the amplifiers 5a, 5b, 5n, the speakers 20a, 20b, 20n, and the remote amplifier 10. Can supply power.

The remote amplifier 10 and the speaker matrix M are equipped with movable terminals 30 to which a signal cable W is connected, respectively.

In the public address system having such a structure, the speaker matrix (M) is provided with a speaker selector (Speaker Selecter; S1), an emergency broadcast selector (EM Selecter; S2), and connected to the speaker, the amplifier to control it Can be.

Therefore, by turning on / off the emergency broadcast selector S2, the normal broadcast and the emergency broadcast can be selected and broadcast.

In addition, the speaker matrix M is connected to a plurality of amplifiers and speakers by a speaker selector S1. Each amplifier and speaker are assigned a unique identification code, respectively.

Therefore, by selecting the speaker selector S1, the respective amplifiers and the speakers 20a, 20b, and 20n can be easily controlled to set the speakers for each group or to set the broadcasting zone.

In addition, the speaker matrix M is provided with a user identification system, so that only an authorized user can operate the broadcasting device. That is, a user authentication system of a password input method is built in the speaker matrix M, and the speaker matrix M can be operated only when the user inputs a preset password.

The remote amplifier 10 may remotely control the amplifier and the speaker.

The remote amplifier 10 has a matrix circuit and a user can easily control the connection system between the amplifiers 5a, 5b, 5n and the speakers 20a, 20b, 20n in a window GUI environment. .

The remote amplifier 10 can easily control each speaker 20a, 20b, 20n by assigning a unique identification code to the speaker matrix M for controlling each speaker 20a, 20b, 20n.

The remote amplifier 10 can remotely control the main body 26 disposed in the broadcasting room by being disposed in a remote place, for example, a school office or an administrative room.

The remote amplifier 10, as shown in Figure 2, the main control unit 11; An audio input unit 12; A voice and data converter 13; An amplifier selector 14 and a speaker selector 15; Control panel 17 is connected to the components and can be controlled, the remote amplifier 10 and the speaker matrix (M) is connected to the signal cable (W).

The main controller 11 may control the speaker matrix M of the broadcasting room even through the remote amplifier 10 through communication with the speaker matrix M installed in the broadcasting room.

In addition, when a sound source generated through a microphone, a DVD player, or the like is input to the audio input unit 12, the input analog signal is transmitted to the speaker matrix M in the form of a digital signal through the voice and data converter 13. .

The remote amplifier 10 is provided with an amplifier selector 14 and a speaker selector 15, and a user manipulates the amplifier selector 14 and the speaker selector 15 through the control panel 17. By controlling the speaker matrix (M) it is possible to send a broadcast only to the desired place.

The control panel 17 includes a touch screen. The control panel 17 is connected to the main control unit 11, the audio input unit 12, the amplifier selection unit 14 and the speaker selection unit 15 to input control commands for each component or You can output the status.

In addition, the control panel 17 can be appropriately responded to the increase or decrease of each component by updating the installed program.

Therefore, the operator can control the entire public address system by controlling the remote amplifier 10 by the control panel 17.

On the other hand, the signal cable (W) can transmit and receive signals by connecting the remote amplifier 10 and the speaker matrix (M). At this time, the signal cable (W) preferably comprises a UTP cable.

The signal cable (W) is composed of one set of eight strands can transmit and receive all signals including the power supply and voice signal.

In more detail, the eight-strand signal cable (W) is for two strands + power supply, two strands for-power supply, two strands for voice and TX DATA (Transmit Data; 2 strands are allocated for RX Data transmission and reception.

The reason why 4 strands are allocated by 2 strands for power supply is that 2 strands are allocated because there is a limitation in the remote control of the remote amplifier 10 because the amount of current cannot be sufficiently supplied when 1 strand is used.

Therefore, the power supply unit 8 and the remote amplifier 10 provided in the main body 26 can be connected to each other by the signal cable W of this disconnection, even if the area where the remote amplifier 10 is installed is in a power failure state. Power can be supplied from the power supply unit 8 to the remote amplifier 10 so that stable broadcasting is possible.

In addition, voice and TX DATA can transmit and receive signals with only two strands as described above.

In other words, digital signals are converted and sent using digital pulse code modulation (PCM). In this case, the PCM method is generally divided into clocks, which are composed of 32 bits of data combination. In this case, only 24 bits of voice are used and 8 bits of data remain (S zone).

Therefore, TX data, that is, a signal for controlling the speaker matrix M, is merged and transmitted in the remaining 8-bit area (S zone), and the data is efficiently transmitted by separating the signal into an original signal at the receiver. Can be processed.

That is, only two strands can transmit and receive an audio signal and a TX signal.

For reference, in the case of data transmission, only one function of transmission or reception is performed at a time by using the HALF DUPLEX method. Therefore, when emergency transmission is made from the remote amplifier 10 to the main body 26, there is a defect that the message transmitted from the main body 26 is not transmitted to the remote amplifier 10 efficiently.

Accordingly, the voice signal and the TX signal can be transmitted using only two strands by using only 24 bits for the voice signal and transmitting the TX data in the remaining 8 bits among the total 32 bits of data allocated as the voice signal transmission signal data.

Both ends of the signal cable W are provided with male connectors 48, for example, terminals such as RJ-45.

The male connector 48 can be easily connected to the female connector 46 of the movable terminal 30 mounted on the remote amplifier 10 and the speaker matrix M of the main body 26, respectively, and the remote amplifier. A signal can be transmitted and received between the 10 and the main body 26.

The movable terminal 30 includes a base 56 fixed to the remote amplifier 10, as shown in FIGS. 4 and 5; A pair of walls 58 and 60 provided on both sides of the base 56 and corresponding to each other; A rotating member 57 mounted below the base 56 to rotatably support the base; A housing 54 disposed between the pair of walls 58 and 60 and movable; A female connector 46 mounted on one side of the housing 54 and into which a male connector 48 of the cable is inserted; A support shaft (66) for aligning the housing (54) between a pair of walls (58, 60); It includes elastic members 62 and 64 to elastically support the housing 54 so that a predetermined tension is applied to the signal cable (W).

The base 56 has a structure that is fixed to the hole formed in one side of the remote amplifier 10 by a bolt or the like.

In addition, the base 56 is supported by the rotating member 57 to allow rotation along the circumferential direction.

That is, the rotating member 57 preferably includes a bearing. And, the bearing is mounted on the lower part of the body of the remote amplifier 10, the upper part is connected to the lower part of the base 56.

Therefore, the rotating member 57 may be rotated at an angle when an external force is applied.

As a result, when the user wants to insert the male connector 48 into the female connector 46 as described below, the user can align the insertion position by rotating the base 56.

On the other hand, the pair of walls (58, 60) protruding on the base 56 has a structure facing each other. In addition, fixing holes h2 and h3 are formed in the pair of walls 58 and 60, respectively, and the support shafts 66 are fixed through the fixing holes h2 and h3.

At this time, one end of the support shaft 66 is inserted into the fixing hole (h2) formed in one wall 58 of the pair of walls (58, 60), the other end of the support shaft 66 is the other wall (60) It is inserted into the fixing hole (h3) formed in.

In addition, the support shaft 66 may be stably fixed by being inserted into the fixing holes h2 and h3 by an interference fit method.

Of course, a screw thread may be formed on one side of the support shaft 66, and the support shaft 66 may be fixed by bolts or the like after passing through the fixing holes h2 and h3.

The male housing 48 is inserted into one side of the housing 54 by the female connector 46.

In addition, since the through hole h1 is formed in the housing 54, the support shaft 66 penetrates the through hole h1. At this time, the inner diameter of the through hole h1 has a diameter larger than the outer diameter of the support shaft 66.

Therefore, even when the support shaft 66 penetrates the through hole h1, the housing 54 can flow in both lateral directions, that is, in a pair of walls 58 and 60.

In addition, receiving grooves h4 and h5 are formed at the inlet and outlet sides of the through hole h1 of the housing 54, respectively. One end of the elastic members 62 and 64 is elastically supported in the receiving grooves h4 and h5. Therefore, both sides of the housing 54 may be elastically supported by the elastic members 62 and 64.

The elastic members 62 and 64 preferably include compression springs, and include a first spring 62 supporting one side of the housing 54 and a second spring 64 supporting the other side of the housing 54. It includes.

The first spring 62 is inserted into one side of the support shaft 66, one side is supported by one side receiving groove (h4) of the housing 54, the other side of the pair of walls (58, 60) It is supported on the inner side of one wall 58.

Accordingly, the first spring 62 may elastically support the housing 54 by being elastically disposed between one side of the housing 54 and one wall 58.

And, the second spring 64 is inserted into the other side of the support shaft 66, one side is supported by the other receiving groove (h5) of the housing 54, the other side of the pair of walls of the other wall ( 60) is supported on the inner side.

Accordingly, the second spring 64 may elastically support the housing 54 by being elastically disposed between the other side surface of the housing 54 and the other wall 60.

As a result, the housing 54 is supported by the support shaft 66, one side is elastically supported by the first spring 62, the other side is elastically supported by the second spring (64) It is a state.

Therefore, since the housing 54 has a structure that can flow in both sides along the support shaft 66, when the male connector 48 is coupled to the female connector 46, the base 56 is rotated, and the housing The male connector 48 and the female connector 46 can be easily engaged by pulling the 54 in the direction of the male connector 48.

At this time, when the male connector 48 is coupled to the female connector 46, the housing 54 tends to return to its original position by the elastic force, so that an appropriate tension acts on the signal cable W. Therefore, the signal cable W always maintains a constant tension state.

Conversely, after disconnecting the male connector 48 from the female connector 46, the housing 54 with the female connector 46 can be returned to its original position by the first and second springs 62 and 64. have.

In this case, the distance that the housing 54 flows laterally may be appropriately changed according to the specifications of the remote amplifier 10 or the main body 26.

As such, the housing 54 having the female connector 46 has a structure capable of flowing in both sides within a predetermined range, such that the male connector 48 of the signal cable W is connected to the female connector 46. Even when not accurately positioned in the engagement position, the male connector 48 can be smoothly inserted into the female connector 46 by moving the housing 54 laterally.

By making the female connector 46 moveable in this manner, when the length of the signal cable W is shorter than the length originally designed, the female connector 46 can be connected by moving the housing 54 laterally.

In the case of the signal cable (W), since it is practically impossible to extend the cable further, it can be effectively connected when the length is short.

The movable terminal 30 is applied not only to the remote amplifier 10 but also to the speaker matrix M of the main body 26. Since the movable terminal 30 applied to the speaker matrix M has the same structure, detailed description thereof will be omitted.

In this way, when the signal cable W is provided between the remote amplifier 10 and the speaker matrix M, the movable terminal 30 movably mounted to the remote amplifier 10 and the speaker matrix M is appropriately installed. After moving to the coupling position, the movable terminal 30 is rotated as necessary, and the male connector 48 mounted at both ends of the signal cable W is coupled to the movable terminal 30, respectively, so that the signal cable ( W) can be easily connected.

Although the spring has been described as an example of the elastic members 62 and 64, the present invention is not limited thereto and may include a material having elastic force, that is, a rubber member, a synthetic resin, or the like.

On the other hand, the movable terminal 30 may be provided with a display unit 55 for informing whether the cable is abnormal.

That is, the display unit 55 includes a lamp, which is connected to each of eight cables constituting the signal cable (W).

Therefore, after the male connector 48 is inserted into the female connector 46, by checking whether the lamp of the display unit 55 is turned on or off, it is easy to identify a cable having an abnormality among eight cables. Can be.

Hereinafter, the operation of the PA system according to the present invention will be described in more detail with reference to the accompanying drawings.

1 to 5, when the remote amplifier 10 proposed by the present invention is connected to and controlled by the signal cable W, the main body 26 of the PA system is first broadcasted. Install it.

The remote amplifier 10 is installed at a remote location away from the broadcasting room. In this state, a signal cable W having a certain length is wired between the broadcasting room and the remote site.

At this time, the signal cable W is cut in accordance with the design value in advance, and only one set is wired. That is, the signal cable (W) is composed of eight strands, two strands for + power supply, two strands for-power supply, two strands for voice and TX DATA (digital transmitting from the remote amplifier to the speaker matrix) 2 strands are allocated for RX Data (Received Data) transmission and reception.

In this way, both ends of the signal cable W, which constitutes one set of eight strands, may reach adjacent positions of the remote amplifier 10 and the main body 26, respectively.

Then, the male connector 48 mounted on one end of the signal cable W is inserted into the female connector 46 of the main body 26. (Of course, it may be connected to the remote amplifier first.)

After connecting one end of the signal cable (W) to the main body 26, the other end of the signal cable (W) is aligned with the coupling position with the female connector 46 of the remote amplifier 10.

At this time, when the length of the signal cable (W) is short, the housing 54 mounted on the remote amplifier 10 is pulled in the direction of the signal cable (W).

In addition, when the mating angles of the male connector 48 and the female connector 46 do not coincide, the mating angles can be matched by rotating the base.

When the female connector 46 of the housing 54 reaches the engagement position with the signal cable W, the male connector 46 of the signal cable W can be connected to the female connector 46 by inserting the male connector 48 into the female connector 46.

At this time, the housing 54 has a tendency to return to its original position by the elastic member, so that a constant tension acts on the signal cable (W).

Therefore, since the signal cable W is maintained by the tension, the signal cable W can be prevented from interfering with the obstacles around it.

In addition, four strands of the eight cables are connected to the power supply 8 of the main body. Therefore, since power is supplied from the power supply unit 8 to the remote amplifier 10, even when the remote site is in a power failure state, the power can be continuously supplied to the remote amplifier 10 so that normal broadcasting is possible.

In this way, the public address system can be efficiently controlled by connecting the signal cable W composed of one set to the remote amplifier 10 equipped with the movable terminal 30 and the main body 26, respectively.

On the other hand, the movable terminal 30 is provided with a display unit 55 for informing whether the cable is abnormal. Therefore, after the male connector 48 is inserted into the female connector 46, by checking whether the lamp of the display unit 55 is turned on or off, it is easy to identify the cable having an abnormality among the eight strands of cables. Can be.

1: PA system
5a, 5b, 5n: amplifier
8: power supply
10: remote amplifier
20a, 20b, 20n: speaker
30: Movable terminal
54: housing
55: display unit
56: base
57: rotating member
58,60: pair of walls

Claims (6)

At least one amplifier for amplifying a voice signal input from a sound source;
A speaker matrix connected to the amplifier to control the voice signal;
A main body connected to the speaker matrix and including at least one speaker for outputting sound by the voice signal;
A remote amplifier disposed remote from the main body and connected to the speaker matrix to remotely control the speaker matrix;
A power supply unit mounted to the main body to supply power to the remote amplifier;
Movable terminals provided to the remote amplifier and the speaker matrix, respectively, to impart a constant elastic force; And
A signal cable which is connected at both ends to the movable terminals of the remote amplifier and the speaker matrix to serve as a passage for transmitting the voice signal,
The movable terminal includes a base fixed to the remote amplifier and speaker matrix;
An upper part connected to a lower part of the base and a lower part of the rotating member having a bearing structure rotatably supporting the base by being seated on the remote amplifier;
A pair of walls protruding from both sides of the base to correspond to each other, and fixing holes are formed respectively;
Support shafts respectively inserted into the fixing holes formed in the pair of walls;
A housing disposed between the pair of walls in a state seated on the base, the housing having a through hole formed therein and movable along the support shaft through the support shaft;
A female connector mounted on one side of the housing and into which a male connector connected to the cable is inserted;
It is disposed between one side of the housing and the inner surface of the one wall of the pair of walls in one state of the support shaft is inserted, the other side of the housing and the inner surface of the other wall in the other end of the support shaft is inserted An elastic member which is disposed between and elastically supports the housing and returns to its original position; And
The public address system including a display unit connected to the female connector to display whether there is an abnormal state of the connection with the male connector. The method of claim 1,
The speaker matrix is provided with a speaker selector, an emergency broadcast selector, the public address system that can be set by the speaker and the amplifier by setting the speaker by group or the broadcast zone. delete The method of claim 1,
The through hole of the housing is a public address system, characterized in that the first and second receiving grooves are formed at the entrance and exit, respectively, the elastic member is supported. The method of claim 1,
The elastic member includes first and second springs, wherein the first spring is supported on one side of the first housing groove and the other side is supported on an inner side surface of the one wall, and the second spring is supported on the one side of the first spring. 2. The PA system is supported by a storage groove and the other side is supported by an inner side surface of the other wall. The method of claim 1,
The signal cable is composed of eight strands, two strands for + power supply, two strands for-power supply, and two strands for voice and TX DATA transmission, and two strands for RX Data. Public address system to allocate for transmission and reception.

Images