KR102443364B1 - Uninterruptible Emergency Broadcasting System - Google Patents

Abstract

The present invention prevents the emergency broadcast voice from howling without mutual interference between the cab and the cabin of the subway vehicle, and between the cabin and the cabin network, so that the engineer located inside the cab and the passengers located inside the cabin can accurately hear the emergency broadcast voice The present invention relates to an uninterruptible emergency broadcasting system that helps to ) or a first emergency broadcast transmission mobile terminal 19 that sends an emergency broadcast audio signal to the third cabin broadcasting device 17; The first emergency broadcasting transmission and transmission terminal 19 is located on the outside of the subway vehicle at a predetermined interval, the cab broadcasting device 11, the first car cabin broadcasting device 13, or the second car cabin broadcasting device 15 ) or a second emergency broadcast transmitting mobile terminal 21 that sends an emergency broadcast audio signal to the third cabin broadcasting device 17; It is installed inside the cab of the subway vehicle, and receives the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first car cabin broadcast device 13 to send the emergency broadcast voice to the engineer located inside the cab, and the emergency broadcast sound sent from the first emergency broadcast transmitting mobile terminal 19, the second emergency broadcast transmitting mobile terminal 21, or the first car cabin broadcasting device 13 and a cab broadcasting device 11 that blocks the signal or sends an emergency broadcast audio signal to the first cabin broadcasting device 13, and the like.

Description

Uninterruptible Emergency Broadcasting System

The present invention relates to an emergency broadcasting system, and more particularly, an emergency broadcasting voice without mutual interference between a driver's cab and a passenger compartment of a vehicle (a subway vehicle or a railroad vehicle), and a network (or emergency broadcasting audio signal) between the cabin and the cabin. It relates to an uninterruptible emergency broadcasting system that prevents howling so that an engineer located inside the cab and passengers located inside the cabin can accurately hear the emergency broadcasting voice.

The railway (or subway) system is a mass transportation method and its importance is expanding as the number of people using it increases. Currently, subways and trains are used nationwide, and light rail and monorail are also operating in various regions.

In preparation for emergency situations such as breakdowns, collisions, derailments, and fires during operation, broadcasting equipment is connected to the cab and guest rooms of railway vehicles by wired cables, and through this, disaster broadcasting such as evacuation guidance is provided in case of emergency. However, in such a wired broadcasting system, when the operating power is cut off due to vehicle departure or the wired cable is cut off during an accident, communication between the crew and passengers is also cut off. Great confusion arises.

As such, in case the cable broadcasting system fails, a wireless emergency broadcasting system with a built-in battery is installed in the recently distributed railway vehicles. In case the wired announcement is not available, the flight attendant carries a radio transmitter provided in the cab to provide disaster broadcasting, and the wireless receiver provided in each cabin receives the crew's voice and operates to output the disaster broadcast inside the cabin.

However, the railway is an unfavorable environment for applying wireless communication. First, the radio transmission/reception quality is very poor due to high voltage and current for driving railway vehicles, limitation and fading of radio waves due to the underground tunnel, and interference with other radio signals. In addition, since the railway has a total length of about 200 meters by connecting the cab and the passenger cabin, there is a problem in the transmission distance. Currently used wireless communication technologies can communicate for several hundred meters in a general environment, but stable wireless communication over this distance is possible in the poor communication environment encountered by railroad vehicles, especially when entering underground or entering a tunnel. does not guarantee

In order to solve the above problems, an application has been filed with the Korean Intellectual Property Office as Application No. 10-2019-0077727 (Title of the Invention: Radio-based emergency broadcasting communication system for railway vehicles) on June 28, 2019, and FIGS. 1 to Referring to the claims with reference to 2, "The first emergency broadcast voice signal provided from the general control center 300 through the train wireless device 120 and the train broadcasting device 110 is transmitted to the outside through short-range wireless digital communication. Emergency broadcast wireless transmitter 150 for wireless transmission: Emergency broadcast transmission for wirelessly transmitting the second emergency broadcast voice signal of the crew member input in conjunction with the crew's operation when an emergency situation of a railroad vehicle occurs through short-range wireless digital communication Mobile terminal 160: Performs short-distance digital radio relay between front and rear cabins arranged adjacent to each other for a series of cabins of a railway vehicle, and receives the announcement voice signal from the announcement power amplifier 210 (hereinafter , 'first route'), the first emergency broadcast audio signal and the second emergency broadcast audio signal are transmitted to the emergency broadcast wireless transmitter 150 and the emergency broadcast transmitting mobile terminal 160 according to the location of the installed cabin, respectively. ), or wirelessly received by short-distance digital radio relay from the preceding cabin (hereinafter referred to as 'second route'), and the announcement of the announcement from the announcement power amplifier 210 according to the first route. If a situation in which the first emergency broadcast audio signal or the second emergency broadcast audio signal is wirelessly received through the second route is detected in a state in which the audio signal is not transmitted, it is determined that an emergency situation has occurred in the railway vehicle and the emergency broadcast mode an emergency broadcast radio receiver 230 that enters into the and controls the turn-on of the emergency lighting device 240 and outputs the wirelessly received first emergency broadcast audio signal or the second emergency broadcast audio signal to the emergency broadcast speaker 250; Is configured to include, the room broadcast control unit 237 of the emergency broadcast wireless receiver 230 through the second wireless communication unit 232 In a state in which the second emergency broadcast voice signal is wirelessly received from the emergency broadcast transmitting mobile terminal 160, the emergency broadcast wireless transmitter 150 through the first wireless communication unit 231 is sent from the general control center 300. Upon detecting that the first emergency broadcast voice signal is wirelessly received, the emergency broadcast channel for the second emergency broadcast voice signal from the emergency broadcast transmitting mobile terminal 160 is forcibly cut off and the first emergency broadcast channel from the general control center 300 is The general control center 300 determines that the crew's response to the emergency situation of the railway vehicle is insufficient by performing override control through the channel switching control that outputs the emergency broadcast voice signal to the emergency broadcast speaker 250, or Wireless-based emergency broadcasting communication system, characterized in that when it is inappropriate to expect the crew to respond due to injuries, etc., the general control center 300 provides to forcibly seize the emergency broadcasting channel authority for the railway vehicle. " to be.

The wireless-based emergency broadcast communication system is a first emergency broadcast transmission mobile terminal (1) located in the front outside of the subway vehicle as shown in FIG. 3 when the vehicle (railway vehicle or subway vehicle) is stopped underground or inside a tunnel ) sends an emergency broadcast audio signal to the cab broadcasting device 100 installed in the first cab, and the second emergency broadcast transmission mobile terminal 3 located on the outside of the subway vehicle is installed in the second cabin of the second cabin. When an emergency broadcast audio signal is sent to the device 200, as shown in FIG. 4, the cab broadcast device performs an emergency broadcast into the cab and simultaneously sends an emergency broadcast sound to the first cabin broadcast device 200 installed in the first passenger compartment. Sending a signal, the second cabin broadcasting device 200 makes an emergency broadcast into the second cabin, and at the same time, the first cabin broadcast device 200 installed in the first cabin and the third cabin broadcast installed in the third cabin An emergency broadcast audio signal is sent to the device 200 .

Here, the first emergency broadcasting transmitting mobile terminal 1 and the second emergency broadcasting transmitting portable terminal 3 are carried by a crew member to transmit a disaster broadcast.

However, as shown in FIG. 4 , the cab broadcasting device 100 transmits an emergency broadcast to the inside of the cab and at the same time sends an emergency broadcast audio signal to the first cabin broadcasting device 200 installed in the first passenger compartment, and sends an emergency broadcast to the second cabin. The broadcasting device 200 makes an emergency broadcast into the second cabin and simultaneously broadcasts the emergency broadcast to the first cabin broadcast device 200 installed in the first cabin and the third cabin broadcast device 200 installed in the third cabin. When you send a voice signal,

The first cabin broadcasting device 200 installed in the first cabin receives the emergency broadcast audio signal sent from the cab broadcast device 100 and the emergency broadcast audio signal sent from the second cabin broadcast device 200 at once, There was a problem that mutual interference occurred and the emergency broadcast voice was howling, so that passengers located inside the first cabin could not accurately listen to the emergency broadcast voice.

Therefore, in the wireless-based emergency broadcasting communication system according to the prior art, the emergency broadcasting voice signal interferes with each other, and the emergency broadcasting voice howling causes the engineer located inside the cab and the passengers located inside the cabin to receive the emergency broadcasting voice. There was a problem that it was not possible to hear accurately.

Accordingly, the present invention has been improved and invented to solve all the problems according to the prior art, and an object of the present invention is to provide a network (or emergency broadcasting audio signal) between the driver's cab and the passenger compartment, and the passenger compartment and the passenger compartment of a vehicle (subway vehicle or rail vehicle). ) to prevent the emergency broadcast voice from howling without mutual interference, and to provide an uninterruptible emergency broadcasting system that helps the engineer located inside the cab and passengers located inside the cabin to accurately listen to the emergency broadcast voice. .

However, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

An uninterruptible emergency broadcasting system according to the present invention for achieving the above object,
Located on one side of the outside of the subway vehicle, emergency broadcasting audio signal to the cab broadcasting device 11, the first car cabin broadcasting device 13, the second car cabin broadcasting device 15, or the third car cabin broadcasting device 17 a first emergency broadcast transmission mobile terminal 19 for sending; The first emergency broadcasting transmission and transmission terminal 19 is located on the outside of the subway vehicle at a predetermined interval, the cab broadcasting device 11, the first car cabin broadcasting device 13, or the second car cabin broadcasting device 15 ) or a second emergency broadcast transmitting mobile terminal 21 that sends an emergency broadcast audio signal to the third cabin broadcasting device 17; It is installed inside the cab of the subway vehicle, and receives the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first car cabin broadcast device 13 to send the emergency broadcast voice to the engineer located inside the cab, and the emergency broadcast sound sent from the first emergency broadcast transmitting mobile terminal 19, the second emergency broadcast transmitting mobile terminal 21, or the first car cabin broadcasting device 13 a cab broadcasting device 11 that blocks the signal or sends an emergency broadcast audio signal to the first cabin broadcasting device 13; Doedoe installed in the first passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 ) receives the emergency broadcast audio signal from ) and sends the emergency broadcast audio to passengers located inside the first passenger compartment, and the first emergency broadcast transmission terminal 19 or the second emergency broadcast transmission terminal 21 or the cab The first to block the emergency broadcasting audio signal sent from the broadcasting device 11 or the second car cabin broadcasting device 15 or to send the emergency broadcasting audio signal to the cab broadcasting device 11 and the second car cabin broadcasting device 15 a call room broadcasting device 13; Doedoe installed in the second passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first cabin broadcasting device 13 or the third cabin broadcasting It receives the emergency broadcast audio signal sent from the device 17 and sends the emergency broadcast audio to passengers located inside the second passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the first car cabin broadcasting device 13 or the third car cabin broadcasting device 17 to block the emergency broadcasting audio signal, or block the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17 In the uninterruptible emergency broadcasting system including the second car cabin broadcasting device 15 that sends an emergency broadcasting audio signal to
The cab broadcasting device 11,
a cab broadcasting control unit 23;
Receives the emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13, or the first car cabin broadcast device 13 a cab broadcast transmission/reception unit 25 for sending an emergency broadcast audio signal to the cab;
The cab broadcasting control unit is electrically connected to the cab broadcast control unit 23 and the cab broadcast transmission/reception unit 25, and transmits the emergency broadcast audio signal received to the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcasting control unit 23 to the cab broadcasting control unit. (23), and blocks the emergency broadcast audio signal received in the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcast control unit 23 to the cab broadcast control unit 23, or blocks the cab broadcast transmission/reception unit 25 a cab switching unit 27 for sending an emergency broadcast audio signal to the cab;
a cab broadcasting unit 29 electrically connected to the cab broadcasting control unit 23 and transmitting an emergency broadcast audio signal to the inside of the cab according to the control signal of the cab broadcasting control unit 23;
The cab broadcast confirmation unit 31, which is electrically connected to the cab broadcasting control unit 23 and the cab broadcasting unit 29, and checks whether emergency broadcasting is performed by the cab broadcasting unit 29 according to the control signal of the cab broadcasting control unit 23. including,
The first car room broadcasting device 13,
a first car room broadcasting control unit 33;
Receive an emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 or broadcast the cab a first car room broadcast transmission/reception unit 35 that sends an emergency broadcast audio signal to the device 11 and the second car room broadcast device 15;
The first car room broadcast control unit 33 and the first car room broadcast transmission/reception unit 35 are electrically connected to each other, and according to the control signal of the first car room broadcast control unit 33, the first car room broadcast transmission/reception unit 35 ), sends the emergency broadcast audio signal received to the first cabin broadcast control unit 33, and the emergency broadcast received by the first cabin broadcast transmission/reception unit 35 according to the control signal of the first room broadcast control unit 33 a first car room switching unit 37 that blocks sending the voice signal to the first car room broadcast control unit 33 or sends an emergency broadcast audio signal to the first car room broadcast transmission/reception unit 35;
The first car room broadcasting unit 39 electrically connected to the first car room broadcasting control unit 33, and sending an emergency broadcast audio signal into the first car room according to the control signal of the first car room broadcasting control unit 33 Wow;
Electrically connected to the first car room broadcasting control unit 33 and the first car room broadcasting unit 39, emergency broadcast of the first car guest room broadcasting unit 39 according to the control signal of the first car room broadcasting control unit 33 Including the first room broadcasting confirmation unit 41 to check whether or not,
The second car cabin broadcasting device 15,
a second cabin broadcasting control unit 43;
Receive the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13 or the third car cabin broadcast device 17 or a second car room broadcast transmission/reception unit 45 for sending an emergency broadcast audio signal to the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17;
It is electrically connected to the second car room broadcast control unit 43 and the second car room broadcast transmission/reception unit 45, and according to the control signal of the second car room broadcast control unit 43, the second room broadcast transmission/reception unit 45 ), sends the emergency broadcast audio signal received to the second cabin broadcast control unit 43, and the emergency broadcast received by the second cabin broadcast transmitter 45 according to the control signal of the second passenger room broadcast control unit 43 a second cabin switching unit 47 that blocks the transmission of the audio signal to the second passenger room broadcasting control unit 43 or sends an emergency broadcast audio signal to the second passenger room broadcast transmission/reception unit 45;
The second car cabin broadcasting unit 49, which is electrically connected to the second car room broadcasting control unit 43, and sends an emergency broadcast audio signal to the inside of the second car room according to the control signal of the second car room broadcasting control unit 43. Wow;
It is electrically connected to the second car room broadcasting control unit 43 and the second car guest room broadcasting unit 49, and according to the control signal of the second car room broadcasting control unit 43, emergency broadcast of the second car guest room broadcasting unit 49 It includes a second room broadcasting confirmation unit 51 to check whether or not.

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As described above, the uninterruptible emergency broadcasting system according to the present invention provides an emergency broadcasting voice without mutual interference between the driver's cab and the cabin of the vehicle (subway vehicle or rail vehicle), and the cabin and the cabin network (or emergency broadcast audio signal). By preventing this howling, there is an effect that the engineer located inside the cab and the passengers located inside the cabin can accurately hear the emergency broadcast voice.

For this reason, the present invention has the effect that even in an emergency situation when the vehicle is stopped underground or inside a tunnel, the engineer and the passengers located inside the cabin can evacuate quickly without much confusion.

1 to 2 are diagrams showing a radio-based emergency broadcasting communication system according to the prior art;
FIG. 3 is a view showing that a first emergency broadcast transmitting mobile terminal and a second emergency broadcast transmitting mobile terminal transmit emergency broadcast audio signals to the wireless-based emergency broadcast communication system according to the prior art of FIG. 1;
4 is a radio-based emergency broadcasting communication system according to the prior art of FIG. 1, when the first emergency broadcasting transmitting mobile terminal and the second emergency broadcasting transmitting mobile terminal send an emergency broadcasting audio signal, a howling phenomenon in the first guest room broadcasting device A drawing showing this happening,
5 is a schematic configuration diagram of an uninterruptible emergency broadcasting system according to the present invention;
6 is a schematic configuration diagram of the cab broadcasting device of the uninterruptible emergency broadcasting system of FIG. 5;
7 is a schematic configuration diagram of the first cabin broadcasting device of the uninterruptible emergency broadcasting system of FIG. 5;
8 is a schematic configuration diagram of the second room broadcasting device of the uninterruptible emergency broadcasting system of FIG. 5;
9 is a schematic configuration diagram of another embodiment of the uninterruptible emergency broadcasting system of FIG.

Hereinafter, a preferred embodiment of the uninterruptible emergency broadcasting system according to the present invention will be described.

In the following description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

5 is a schematic configuration diagram of an uninterruptible emergency broadcasting system according to the present invention, FIG. 6 is a schematic configuration diagram of a cab broadcasting device of the uninterruptible emergency broadcasting system of FIG. 5, and FIG. 7 is an uninterruptible emergency broadcasting system of FIG. It is a schematic configuration diagram of the first room broadcasting device, and FIG. 8 is a schematic configuration diagram of the second room broadcasting device of the uninterruptible emergency broadcasting system of FIG. 5 .

5 to 8, the uninterruptible emergency broadcasting system 10 according to the present invention,

Located on one side of the outside of the subway vehicle, emergency broadcasting audio signal to the cab broadcasting device 11, the first car cabin broadcasting device 13, the second car cabin broadcasting device 15, or the third car cabin broadcasting device 17 a first emergency broadcast transmission mobile terminal 19 for sending;

The first emergency broadcasting transmission and transmission terminal 19 is located on the outside of the subway vehicle at a predetermined interval, the cab broadcasting device 11, the first car cabin broadcasting device 13, or the second car cabin broadcasting device 15 ) or a second emergency broadcast transmitting mobile terminal 21 that sends an emergency broadcast audio signal to the third cabin broadcasting device 17;

It is installed inside the cab of the subway vehicle, and receives the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first car cabin broadcast device 13 to send the emergency broadcast voice to the engineer located inside the cab, and the emergency broadcast sound sent from the first emergency broadcast transmitting mobile terminal 19, the second emergency broadcast transmitting mobile terminal 21, or the first car cabin broadcasting device 13 a cab broadcasting device 11 that blocks the signal or sends an emergency broadcast audio signal to the first cabin broadcasting device 13;

Doedoe installed in the first passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 ) receives the emergency broadcast audio signal from ) and sends the emergency broadcast audio to passengers located inside the first passenger compartment, and the first emergency broadcast transmission terminal 19 or the second emergency broadcast transmission terminal 21 or the cab The first to block the emergency broadcasting audio signal sent from the broadcasting device 11 or the second car cabin broadcasting device 15 or to send the emergency broadcasting audio signal to the cab broadcasting device 11 and the second car cabin broadcasting device 15 a call room broadcasting device 13;

Doedoe installed in the second passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first cabin broadcasting device 13 or the third cabin broadcasting It receives the emergency broadcast audio signal sent from the device 17 and sends the emergency broadcast audio to passengers located inside the second passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the first car cabin broadcasting device 13 or the third car cabin broadcasting device 17 to block the emergency broadcasting audio signal, or block the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17 and a second cabin broadcasting device 15 for sending an emergency broadcast audio signal to

Here, the cab broadcasting device 11 is

a cab broadcasting control unit 23;

Receives the emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13, or the first car cabin broadcast device 13 a cab broadcast transmission/reception unit 25 for sending an emergency broadcast audio signal to the cab;

The cab broadcasting control unit is electrically connected to the cab broadcast control unit 23 and the cab broadcast transmission/reception unit 25, and transmits the emergency broadcast audio signal received to the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcasting control unit 23 to the cab broadcasting control unit. (23), and blocks the emergency broadcast audio signal received in the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcast control unit 23 to the cab broadcast control unit 23, or blocks the cab broadcast transmission/reception unit 25 a cab switching unit 27 for sending an emergency broadcast audio signal to the cab;

a cab broadcasting unit 29 electrically connected to the cab broadcasting control unit 23 and transmitting an emergency broadcast audio signal to the inside of the cab according to the control signal of the cab broadcasting control unit 23;

The cab broadcast confirmation unit 31, which is electrically connected to the cab broadcasting control unit 23 and the cab broadcasting unit 29, and checks whether emergency broadcasting is performed by the cab broadcasting unit 29 according to the control signal of the cab broadcasting control unit 23. include

The first car cabin broadcasting device 13,

a first car room broadcasting control unit 33;

Receive an emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 or broadcast the cab a first car room broadcast transmission/reception unit 35 that sends an emergency broadcast audio signal to the device 11 and the second car room broadcast device 15;

The first car room broadcast control unit 33 and the first car room broadcast transmission/reception unit 35 are electrically connected to each other, and according to the control signal of the first car room broadcast control unit 33, the first car room broadcast transmission/reception unit 35 ), sends the emergency broadcast audio signal received to the first cabin broadcast control unit 33, and the emergency broadcast received by the first cabin broadcast transmission/reception unit 35 according to the control signal of the first room broadcast control unit 33 a first car room switching unit 37 that blocks sending the voice signal to the first car room broadcast control unit 33 or sends an emergency broadcast audio signal to the first car room broadcast transmission/reception unit 35;

The first car room broadcasting unit 39 electrically connected to the first car room broadcasting control unit 33, and sending an emergency broadcast audio signal into the first car room according to the control signal of the first car room broadcasting control unit 33 Wow;

Electrically connected to the first car room broadcasting control unit 33 and the first car room broadcasting unit 39, emergency broadcast of the first car guest room broadcasting unit 39 according to the control signal of the first car room broadcasting control unit 33 It includes a first room broadcasting confirmation unit 41 to check whether or not.

The second car cabin broadcasting device 15,

a second cabin broadcasting control unit 43;

Receive the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13 or the third car cabin broadcast device 17 or a second car room broadcast transmission/reception unit 45 for sending an emergency broadcast audio signal to the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17;

It is electrically connected to the second car room broadcast control unit 43 and the second car room broadcast transmission/reception unit 45, and according to the control signal of the second car room broadcast control unit 43, the second room broadcast transmission/reception unit 45 ), sends the emergency broadcast audio signal received to the second cabin broadcast control unit 43, and the emergency broadcast received by the second cabin broadcast transmitter 45 according to the control signal of the second passenger room broadcast control unit 43 a second cabin switching unit 47 that blocks the transmission of the audio signal to the second passenger room broadcasting control unit 43 or sends an emergency broadcast audio signal to the second passenger room broadcast transmission/reception unit 45;

The second car cabin broadcasting unit 49, which is electrically connected to the second car room broadcasting control unit 43, and sends an emergency broadcast audio signal to the inside of the second car room according to the control signal of the second car room broadcasting control unit 43. Wow;

It is electrically connected to the second car room broadcasting control unit 43 and the second car guest room broadcasting unit 49, and according to the control signal of the second car room broadcasting control unit 43, emergency broadcast of the second car guest room broadcasting unit 49 It includes a second room broadcasting confirmation unit 51 to check whether or not.

The operation (or control method) of the uninterruptible emergency broadcasting system according to the present invention included as described above will be described with reference to FIGS. 5 to 8 as follows.

Operation of the first embodiment

When a subway vehicle stops underground or inside a tunnel while driving,

After the crew equipped with the first emergency broadcast transmitting terminal 19 is located on one side of the outside of the cab of the subway vehicle, the cab broadcasting control unit 23 installed in the cab using the first emergency broadcasting transmitting portable terminal 19 and An emergency broadcast audio signal is sent to the cab broadcasting device 11 including the cab broadcast transmitting/receiving unit 25 , the cab switching unit 27 , the cab broadcasting unit 29 , and the cab broadcasting confirmation unit 31 .

As described above, the first emergency broadcast transmitting mobile terminal 19 connects the cab broadcasting control unit 23, the cab broadcast transmitting/receiving unit 25, the cab switching unit 27, the cab broadcasting unit 29, and the cab broadcasting confirmation unit 31. When an emergency broadcast audio signal is sent to the cab broadcasting device 11 including

The cab broadcast control unit 23 sends a control signal to the cab broadcast confirmation unit 31 .

Then, the cab broadcast confirmation unit 31 confirms whether the cab broadcast unit 29 is emergency broadcast according to the control signal of the cab broadcast control unit 23, and then sends the detected emergency broadcast confirmation value to the cab broadcast control unit 23. .

Then, the cab broadcast control unit 23 compares and determines the preset emergency broadcast confirmation value and the detected emergency broadcast confirmation value, and then, if the detected emergency broadcast confirmation value is smaller than the preset emergency broadcast confirmation value (not performing emergency broadcasting) The cab switching unit 27 is switched on, and the emergency broadcasting audio signal sent by the first emergency broadcasting transmitting mobile terminal 19 is received from the cab broadcasting transmitting/receiving unit 25, and the received first emergency The emergency broadcast audio signal of the broadcast transmitting mobile terminal 19 is transmitted to the first cabin broadcast control unit 33 installed in the first passenger compartment, the first cabin broadcast transceiver 35, and the first cabin switching unit 37 and It is sent to the first car room broadcasting device 13 including the first car room broadcasting unit 39 and the first car room broadcasting confirmation unit 41 .

Then, the cab broadcasting control unit 23 transmits the received emergency broadcasting audio signal of the first emergency broadcasting transmitting mobile terminal 19 to the cab broadcasting unit 29 .

Then, the cab broadcasting unit 29 sends an emergency broadcast voice to the inside of the cab according to the control signal of the cab broadcasting control unit 23 .

And, as described above, the cab broadcasting device 11 includes the first car room broadcast control unit 33, the first car room broadcast transceiver 35, the first car room switching unit 37, and the first car room broadcasting unit 39 ) and an emergency broadcast audio signal to the first car cabin broadcasting device 13 including the first car cabin broadcast confirmation unit 41,

The first car room broadcast control unit 33 sends a control signal to the first car room broadcast confirmation unit 41 .

Then, the first car room broadcast confirmation unit 41 confirms whether the emergency broadcast of the first car room broadcasting unit 39 is performed according to the control signal of the first car room broadcast control unit 33, and then the detected emergency broadcast confirmation value is sent to the first cabin broadcasting control unit 33 .

Then, after comparing and determining the preset emergency broadcast confirmation value and the detected emergency broadcast confirmation value, the first cabin broadcast control unit 33 determines that the detected emergency broadcast confirmation value is smaller than the preset emergency broadcast confirmation value (emergency broadcast) is considered not to) switch on the first car cabin switching unit 37, and receive the emergency broadcast audio signal sent by the cab broadcasting device 11 from the first car cabin broadcast transceiver 35 The received emergency broadcast audio signal of the cab broadcasting device 11 is transmitted to the second cabin broadcast control unit 43 installed in the second passenger compartment, the second cabin broadcast transceiver 45, and the second vehicle cabin switching unit 47. and the second car room broadcasting unit 49 and the second car room broadcasting confirmation unit 51 including the second car room broadcasting device 15.

Then, the first car room broadcasting control unit 33 transmits the received emergency broadcast audio signal of the cab broadcasting device 11 to the first car room broadcasting unit 39 .

Then, the first car room broadcasting unit 39 sends an emergency broadcast voice to the inside of the first car room according to the control signal of the first car room broadcasting control unit 33 .

On the other hand, after the crew equipped with the second emergency broadcast transmitting terminal 21 is located on the outside of the second passenger compartment of the subway vehicle, the second emergency broadcast transmitting terminal 21 is used to enter the second passenger compartment. The installed No. 2 cabin broadcast control unit 43, the No. 2 guest room broadcast transceiver 45, the No. 2 cabin switching unit 47, the No. 2 cabin broadcasting unit 49, and the No. 2 cabin broadcast confirmation unit 51 ) is sent to the second cabin broadcasting device 15 including

And, as described above, the second emergency broadcast transmitting mobile terminal 21 is connected to the second car room broadcasting control unit 43, the second car room broadcast transmitting/receiving unit 45, the second car cabin switching unit 47 and the second car. When an emergency broadcast audio signal is sent to the second car room broadcasting device 15 including the guest room broadcasting unit 49 and the second car room broadcasting confirmation unit 51,

The second car room broadcast control unit 43 sends a control signal to the second car room broadcast confirmation unit 51 .

Then, the second car cabin broadcast confirmation unit 51 checks whether the second car cabin broadcast unit 49 is emergency broadcast according to the control signal of the second car cabin broadcast control unit 43, and then the detected emergency broadcast confirmation value is sent to the second cabin broadcasting control unit 43 .

Then, after comparing and determining the preset emergency broadcast confirmation value and the detected emergency broadcast confirmation value, the second cabin broadcast control unit 43 determines that the detected emergency broadcast confirmation value is greater than the preset emergency broadcast confirmation value (received first confirmation value). The emergency broadcast audio signal of the car no. 1 cabin broadcasting device is considered to be emergency broadcast) Turn off the switch off (off) the second car cabin switching unit 47.

Accordingly, the second car cabin broadcasting device 15 blocks the emergency broadcasting audio signal sent by the second emergency broadcasting transmitting mobile terminal 21 .

If the detected emergency broadcast confirmation value is smaller than the preset emergency broadcast confirmation value (there is no emergency broadcast audio signal from the first cabin broadcasting device, that is, it is considered that emergency broadcast is not performed), the second cabin The broadcast control unit 43 switches on the second car room switching unit 47, and the emergency broadcast audio signal sent from the second emergency broadcast transmitting/receiving unit 45 to the second emergency broadcast transmitting mobile terminal 21 In addition to receiving the emergency broadcast audio signal of the received second emergency broadcast transmitting mobile terminal 21, the first cabin broadcasting device 13 installed in the first passenger compartment and the third car cabin broadcasting device installed in the third passenger compartment (17).

Then, the second car room broadcasting control unit 43 transmits the received emergency broadcast audio signal of the second emergency broadcast transmitting mobile terminal 21 to the second car room broadcasting unit 49 .

In addition, the second car cabin broadcasting unit 49 sends an emergency broadcast voice to the second car cabin according to the control signal of the second car passenger room broadcasting control unit 43 .

Therefore, the present invention prevents the emergency broadcast voice from howling without mutual interference between the cab and the cabin of the subway vehicle, and between the cabin and the cabin network, so that the engineer located inside the cab and the passengers located inside the cabin can hear the emergency broadcast voice. It helps you to hear accurately.

9 is a schematic configuration diagram of another embodiment of the uninterruptible emergency broadcasting system of FIG.

As shown in Figure 9, the uninterruptible emergency broadcasting system 10 according to the present invention,

Doedoe located on the outside side of the subway vehicle, the first cab broadcasting device 11, the first car cabin broadcasting device 13, the second car cabin broadcasting device 15, or the third car cabin broadcasting device 17 or the fourth Call room broadcasting device 60 or 5th cabin broadcasting device 61 or 6th cabin broadcasting device 62 or 7th cabin broadcasting device 63 or 8th cabin broadcasting device 64 or the second a first emergency broadcast transmission mobile terminal 19 that sends an emergency broadcast audio signal to the cab broadcast device 65;

Doedoe located on the outside of the subway vehicle at a predetermined interval from the first emergency broadcasting transmission terminal 19, the first cab broadcasting device 11, the first car cabin broadcasting device 13, or the second car cabin broadcasting device (15) or the 3rd cabin broadcasting system 17 or the 4th cabin broadcasting system 60 or the 5th cabin broadcasting system 61 or the 6th cabin broadcasting system 62 or the 7th cabin broadcasting system (63) or a second emergency broadcast transmitting mobile terminal 21 that sends an emergency broadcast audio signal to the eighth cabin broadcasting device 64 or the second cab broadcasting device 65;

The emergency broadcast audio signal is installed inside the first cab of the subway vehicle, and is transmitted from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first car cabin broadcast device 13 It receives and sends an emergency broadcast voice to the engineer located inside the first cab, and is sent from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13. a first cab broadcasting device 11 that blocks an incoming emergency broadcast audio signal or sends an emergency broadcast audio signal to the first cabin broadcast device 13;

Doedoe installed in the first passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 ) receives the emergency broadcast audio signal from ) and sends the emergency broadcast audio to passengers located inside the first passenger compartment, and the first emergency broadcast transmission terminal 19 or the second emergency broadcast transmission terminal 21 or the cab The first to block the emergency broadcasting audio signal sent from the broadcasting device 11 or the second car cabin broadcasting device 15 or to send the emergency broadcasting audio signal to the cab broadcasting device 11 and the second car cabin broadcasting device 15 a call room broadcasting device 13;

Doedoe installed in the second passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first cabin broadcasting device 13 or the third cabin broadcasting terminal It receives the emergency broadcast audio signal sent from the device 17 and sends the emergency broadcast audio to passengers located inside the second passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the first car cabin broadcasting device 13 or the third car cabin broadcasting device 17 to block the emergency broadcasting audio signal, or block the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17 a second cabin broadcasting device 15 for sending an emergency broadcast audio signal to

Doedoe installed in the passenger compartment of the third subway vehicle, the first emergency broadcast transmission terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the second vehicle cabin broadcasting device 15 or the fourth cabin broadcast terminal Receives the emergency broadcast audio signal sent from the device 60, sends the emergency broadcast audio to passengers located inside the third passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the second car cabin broadcasting device 15 or the fourth car cabin broadcasting device 60 to block the emergency broadcast audio signal, or block the second car cabin broadcasting device 15 and the fourth car cabin broadcasting device 60 a third room broadcasting device 17 that sends an emergency broadcast audio signal to

Doedoe installed inside the fourth passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the third cabin broadcasting device 17 or the fifth cabin broadcast Receives the emergency broadcast audio signal sent from the device 61 and sends the emergency broadcast audio to passengers located inside the fourth passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the 3rd car cabin broadcasting device 17 or the 5th car cabin broadcasting device 61 to block the emergency broadcasting audio signal, or the 3rd car cabin broadcasting device 17 and the 5th car cabin broadcasting device 61 Car No. 4 room broadcasting device 60 for sending an emergency broadcast audio signal to;

Doedoe installed inside the 5th passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the 4th cabin broadcasting device 60 or the 6th cabin broadcasting Receives the emergency broadcast audio signal sent from the device 62 and sends the emergency broadcast audio to passengers located inside the fifth passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the 4th car cabin broadcasting device 60 or the 6th car cabin broadcasting device 62 to block the emergency broadcasting audio signal, or the 4th car cabin broadcasting device 60 and the 6th car cabin broadcasting device 62 Car No. 5 cabin broadcasting device 61 for sending an emergency broadcast audio signal to

Installed in the passenger compartment of the 6th subway vehicle, the first emergency broadcasting transmission terminal 19 or the second emergency broadcasting transmission portable terminal 21 or the fifth vehicle cabin broadcasting device 61 or the 7th cabin broadcasting terminal Receives the emergency broadcast audio signal sent from the device 63 and sends the emergency broadcast audio to passengers located inside the sixth passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the 5th car cabin broadcasting device 61 or the 7th car cabin broadcasting device 63 to block the emergency broadcast audio signal, or the 5th car cabin broadcasting device 61 and the 7th car cabin broadcasting device 63 The 6th cabin broadcasting device 62 for sending an emergency broadcasting audio signal to

Doedoe installed inside the 7th passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the 6th cabin broadcasting device 62 or the 8th cabin broadcasting It receives the emergency broadcast audio signal sent from the device 64 and sends the emergency broadcast audio to passengers located inside the 7th passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the 6th cabin broadcasting device 62 or the 8th car cabin broadcasting device 64 to block the emergency broadcast audio signal, or to block the 6th car cabin broadcasting device 62 and the 8th car cabin broadcasting device 64 The 7th cabin broadcasting device 63 for sending an emergency broadcasting audio signal to

Doedoe installed inside the 8th passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the 7th cabin broadcasting device 63 or the second cab broadcasting device Receives the emergency broadcast audio signal from (65) and sends the emergency broadcast audio to passengers located inside the passenger compartment of the 8th car, and the first emergency broadcast transmission terminal (19) or the second emergency broadcast transmission terminal (21) Alternatively, the emergency broadcasting audio signal transmitted from the 7th cabin broadcasting device 63 or the second cab broadcasting device 65 is blocked, or emergency broadcasting is performed to the 7th cabin broadcasting device 63 and the second cab broadcasting device 65. an 8th cabin broadcasting device 64 for sending a voice signal;

The emergency broadcast audio signal is installed inside the second cab of the subway vehicle, and is transmitted from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the 8th car cabin broadcast device 64 It receives and sends an emergency broadcast voice to the engineer located inside the second cab, and is sent from the first emergency broadcast transmitting mobile terminal 19, the second emergency broadcast transmitting mobile terminal 21, or the eighth car cabin broadcasting device 64. and a second cab broadcasting device 65 that blocks the incoming emergency broadcast audio signal or sends an emergency broadcast audio signal to the 8th cabin broadcasting device 64 .

A description of the operation of FIG. 9 included as described above will be omitted.

The above detailed description of the present invention is merely illustrative of the present invention, which is only used for the purpose of describing the present invention and is not used to limit the meaning or the scope of the present invention described in the claims.

Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: Uninterruptible emergency broadcasting system
11: cab broadcasting device 13: first cabin broadcasting device
15: No. 2 cabin broadcasting device 17: No. 3 cabin broadcasting device
19: first emergency broadcasting transmitting mobile terminal 21: second emergency broadcasting transmitting mobile terminal
23: cab broadcasting control unit 25: cab broadcasting transmission and reception unit
27: cab switching unit 29: cab broadcasting unit
31: cab broadcast confirmation unit 33: first cabin broadcasting control unit
35: No. 1 guest room broadcasting transceiver unit 37: No. 1 cabin switching unit
39: No. 1 cabin broadcasting unit 41: No. 1 guest room broadcasting confirmation unit
43: No. 2 guest room broadcasting control unit 45: No. 2 guest room broadcasting transmission and reception unit
47: No. 2 cabin switching unit 49: No. 2 cabin broadcasting unit
51: No.2 cabin broadcasting confirmation department

Claims (4)

Located on one side of the outside of the subway vehicle, emergency broadcasting audio signal to the cab broadcasting device 11, the first car cabin broadcasting device 13, the second car cabin broadcasting device 15, or the third car cabin broadcasting device 17 a first emergency broadcast transmission mobile terminal 19 for sending; The first emergency broadcasting transmission and transmission terminal 19 is located on the outside of the subway vehicle at a predetermined interval, the cab broadcasting device 11, the first car cabin broadcasting device 13, or the second car cabin broadcasting device 15 ) or a second emergency broadcast transmitting mobile terminal 21 that sends an emergency broadcast audio signal to the third cabin broadcasting device 17; It is installed inside the cab of the subway vehicle, and receives the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19, the second emergency broadcast transmission mobile terminal 21, or the first car cabin broadcast device 13 to send the emergency broadcast voice to the engineer located inside the cab, and the emergency broadcast sound sent from the first emergency broadcast transmitting mobile terminal 19, the second emergency broadcast transmitting mobile terminal 21, or the first car cabin broadcasting device 13 a cab broadcasting device 11 that blocks the signal or sends an emergency broadcast audio signal to the first cabin broadcasting device 13; Doedoe installed in the first passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 ) receives the emergency broadcast audio signal from ) and sends the emergency broadcast audio to passengers located inside the first passenger compartment, and the first emergency broadcast transmission terminal 19 or the second emergency broadcast transmission terminal 21 or the cab The first to block the emergency broadcasting audio signal sent from the broadcasting device 11 or the second car cabin broadcasting device 15 or to send the emergency broadcasting audio signal to the cab broadcasting device 11 and the second car cabin broadcasting device 15 a call room broadcasting device 13; Doedoe installed in the second passenger compartment of the subway vehicle, the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first cabin broadcasting device 13 or the third cabin broadcasting It receives the emergency broadcast audio signal sent from the device 17 and sends the emergency broadcast audio to passengers located inside the second passenger compartment, and the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 ) or the first car cabin broadcasting device 13 or the third car cabin broadcasting device 17 to block the emergency broadcasting audio signal, or block the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17 In the uninterruptible emergency broadcasting system including the second car cabin broadcasting device 15 that sends an emergency broadcasting audio signal to
The cab broadcasting device 11,
a cab broadcasting control unit 23;
Receives the emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13, or the first car cabin broadcast device 13 a cab broadcast transmission/reception unit 25 for sending an emergency broadcast audio signal to the cab;
The cab broadcasting control unit is electrically connected to the cab broadcast control unit 23 and the cab broadcast transmission/reception unit 25, and transmits the emergency broadcast audio signal received to the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcasting control unit 23 to the cab broadcasting control unit. (23), and blocks the emergency broadcast audio signal received in the cab broadcast transmission/reception unit 25 according to the control signal of the cab broadcast control unit 23 to the cab broadcast control unit 23, or blocks the cab broadcast transmission/reception unit 25 a cab switching unit 27 for sending an emergency broadcast audio signal to the cab;
a cab broadcasting unit 29 electrically connected to the cab broadcasting control unit 23 and transmitting an emergency broadcast audio signal to the inside of the cab according to the control signal of the cab broadcasting control unit 23;
The cab broadcast confirmation unit 31, which is electrically connected to the cab broadcasting control unit 23 and the cab broadcasting unit 29, and checks whether emergency broadcasting is performed by the cab broadcasting unit 29 according to the control signal of the cab broadcasting control unit 23. including,
The first car room broadcasting device 13,
a first car room broadcasting control unit 33;
Receive an emergency broadcast audio signal transmitted from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the cab broadcast device 11 or the second car cabin broadcast device 15 or broadcast the cab a first car room broadcast transmission/reception unit 35 that sends an emergency broadcast audio signal to the device 11 and the second car room broadcast device 15;
The first car room broadcast control unit 33 and the first car room broadcast transmission/reception unit 35 are electrically connected to each other, and according to the control signal of the first car room broadcast control unit 33, the first car room broadcast transmission/reception unit 35 ), sends the emergency broadcast audio signal received to the first cabin broadcast control unit 33, and the emergency broadcast received by the first cabin broadcast transmission/reception unit 35 according to the control signal of the first room broadcast control unit 33 a first car room switching unit 37 that blocks sending the voice signal to the first car room broadcast control unit 33 or sends an emergency broadcast audio signal to the first car room broadcast transmission/reception unit 35;
The first car room broadcasting unit 39 electrically connected to the first car room broadcasting control unit 33, and sending an emergency broadcast audio signal into the first car room according to the control signal of the first car room broadcasting control unit 33 Wow;
Electrically connected to the first car room broadcasting control unit 33 and the first car room broadcasting unit 39, emergency broadcast of the first car guest room broadcasting unit 39 according to the control signal of the first car room broadcasting control unit 33 Including the first room broadcasting confirmation unit 41 to check whether or not,
The second car cabin broadcasting device 15,
a second cabin broadcasting control unit 43;
Receive the emergency broadcast audio signal sent from the first emergency broadcast transmission mobile terminal 19 or the second emergency broadcast transmission mobile terminal 21 or the first car cabin broadcast device 13 or the third car cabin broadcast device 17 or a second car room broadcast transmission/reception unit 45 for sending an emergency broadcast audio signal to the first car cabin broadcasting device 13 and the third car cabin broadcasting device 17;
It is electrically connected to the second car room broadcast control unit 43 and the second car room broadcast transmission/reception unit 45, and according to the control signal of the second car room broadcast control unit 43, the second room broadcast transmission/reception unit 45 ), sends the emergency broadcast audio signal received to the second cabin broadcast control unit 43, and the emergency broadcast received by the second cabin broadcast transmitter 45 according to the control signal of the second passenger room broadcast control unit 43 a second cabin switching unit 47 that blocks the transmission of the audio signal to the second passenger room broadcasting control unit 43 or sends an emergency broadcast audio signal to the second passenger room broadcast transmission/reception unit 45;
The second car cabin broadcasting unit 49, which is electrically connected to the second car room broadcasting control unit 43, and sends an emergency broadcast audio signal to the inside of the second car room according to the control signal of the second car room broadcasting control unit 43. Wow;
It is electrically connected to the second car room broadcasting control unit 43 and the second car guest room broadcasting unit 49, and according to the control signal of the second car room broadcasting control unit 43, emergency broadcast of the second car guest room broadcasting unit 49 Uninterruptible emergency broadcasting system, characterized in that it includes a second room broadcasting confirmation unit 51 to check whether or not.




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