An emergency broadcasting device for highway tunnels

Abstract

This application discloses an emergency broadcasting device for highway tunnels in the field of tunnel communication technology, including an emergency telephone broadcasting system platform, a communication module, and multiple communication terminals. The multiple communication terminals are electrically connected to the communication module, and the communication module is electrically connected to the emergency telephone broadcasting system platform. The multiple communication terminals are fixedly spaced within the tunnel. Each communication terminal includes a synchronous control unit and a camera. The synchronous control unit is used to communicate with the emergency telephone broadcasting system platform. The camera is used to transmit images from the synchronous control unit and its surrounding environment to the emergency telephone broadcasting system platform via the communication module. This solution solves the problem that current tunnel broadcasting command systems may affect command due to audio mismatch errors.

Description

Technical Field

[0001] This utility model relates to the field of tunnel communication technology, specifically to an emergency broadcasting device for highway tunnels. Background Technology

[0002] The tunnel emergency telephone broadcast system is a communication solution specifically designed for emergencies within tunnels. It aims to ensure rapid and effective information dissemination and emergency response in the event of an accident or emergency. Combining emergency telephone and public address system functions, the system provides a reliable communication channel between tunnel users (such as drivers and passengers) and emergency service centers, and can promptly disseminate important notices or guidance to everyone within the tunnel.

[0003] Patent application number 202410313744.2 discloses a highway tunnel broadcasting and command system, including a command microphone, a traffic management computer, and a switch, as well as a field microphone, a speaker terminal, and a video monitoring module installed in the highway tunnel. The command microphone is used to capture the command audio of the command personnel and input it into the traffic management computer. The traffic management computer is interconnected with the switch. The video monitoring module and the field microphone respectively collect field video and audio, which are then played on the traffic management computer after passing through the switch. The speaker terminal is connected to the switch. This highway tunnel broadcasting and command system can obtain the traffic conditions of the highway tunnel through the video monitoring module and conduct remote command, which can greatly improve traffic command efficiency and reduce police response time. However, in this patent, the call function and video monitoring work independently. If a vehicle malfunctions or a car accident occurs in the tunnel, the monitoring video angle provided by the video monitoring is limited, and the staff cannot accurately determine what kind of malfunction occurred through the monitoring video. Moreover, when multiple accidents occur in the tunnel, if the staff is not familiar with the tunnel terrain information, it may lead to errors in the correspondence between the collected field audio and field video, resulting in incorrect judgments and affecting command. Utility Model Content

[0004] The present invention aims to provide an emergency broadcasting device for highway tunnels to solve the problem that current tunnel broadcasting command systems may affect command due to audio correspondence errors.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an emergency broadcasting device for highway tunnels, comprising an emergency telephone broadcasting system platform, a communication module, and multiple communication terminals;

[0006] Multiple communication terminals are electrically connected to the communication module, and the communication module is electrically connected to the emergency telephone broadcasting system platform;

[0007] Multiple communication terminals are fixed at intervals inside the tunnel. Each communication terminal includes a synchronous control extension and a camera. The synchronous control extension is used to communicate with the emergency telephone broadcasting system platform. The camera is used to transmit the images of the synchronous control extension and the surrounding environment of the synchronous control extension to the emergency telephone broadcasting system platform through the communication module.

[0008] Furthermore, the emergency telephone broadcasting system platform is connected to the tunnel broadcasting system via an electrical signal through a communication module. The tunnel broadcasting system includes broadcasting inside the tunnel and broadcasting at the tunnel entrance. The broadcasting inside the tunnel includes multiple speakers evenly spaced inside the tunnel. The broadcasting at the tunnel entrance includes two sets of window speakers, which are respectively located at the two tunnel entrances. The window speakers are used to allow vehicles at the tunnel entrances to receive the broadcast sound field.

[0009] Furthermore, the tunnel broadcasting system uses high-definition synchronous directional window loudspeakers, with a spacing of 100 meters between each loudspeaker.

[0010] Furthermore, the two sets of window speakers are independent 8-source phased array window speakers, which are composed of 8 mutually independent sound-generating unit arrays.

[0011] Furthermore, the communication module adopts a converged industrial Ethernet switch.

[0012] Furthermore, the synchronous control unit is equipped with a backlit emergency call button.

[0013] Furthermore, the speaker in the synchronous control unit is a speaker with a turbine-type acoustic cavity design.

[0014] Furthermore, it also includes multiple soundproof enclosures, with multiple synchronous control sub-units fixedly installed inside the soundproof enclosures, corresponding one-to-one with the soundproof enclosures. The soundproof enclosure includes a fixing frame and an enclosure body. The fixing frame is fixedly installed on the wall inside the tunnel, and a connecting plate is fixedly connected to the fixing frame. The synchronous control sub-unit is fixedly installed on the side of the connecting plate facing away from the wall by screws. The enclosure body is detachably connected to the connecting plate. The enclosure body is a box-shaped enclosure with an open bottom and a hemispherical top. The enclosure body is double-layered, with a soundproofing panel installed in the interlayer of the enclosure body.

[0015] Working principle of this utility model:

[0016] In case of an emergency within the tunnel, personnel can press the backlit emergency call button on the synchronous control unit to establish communication with the emergency telephone broadcasting system platform via the communication module. Simultaneously, the camera transmits images from the synchronous control unit and the surrounding environment to the emergency telephone broadcasting system platform, allowing staff to intuitively understand the situation and avoid misjudgments due to limited video monitoring angles. If a broadcast is needed, the emergency telephone broadcasting system platform controls the tunnel broadcast via the communication module. Multiple evenly spaced high-definition synchronous directional window speakers inside the tunnel broadcast the message, while two independent 8-source phased array window speakers at the tunnel entrances ensure that vehicles at the tunnel entrances receive the broadcast sound field. Furthermore, because the synchronous control unit is housed within a soundproof enclosure, the soundproofing panels in the double-layered structure and the unique design of the enclosure reduce background noise interference within the tunnel. The turbine-style acoustic cavity design of the speakers within the synchronous control unit also contributes to clear sound transmission.

[0017] The beneficial effects of this utility model are:

[0018] 1. Compared with existing technologies, this solution achieves precise audio and video acquisition by using a one-button call system from the synchronous control unit to link with a camera, enabling precise image capture from the location of the call. Furthermore, the dual noise reduction design of the synchronous control unit's built-in microphone and soundproof enclosure ensures that even in heavy traffic within tunnels, staff can clearly hear the on-site voice messages. Combined with real-time video footage, this allows for accurate judgment on whether to dispatch ambulances, fire trucks, or other professional rescue forces, avoiding misjudgments due to unclear information. Moreover, in the event of multiple incidents within the tunnel, when the unit initiates a communication, the nearest video surveillance image automatically pops up on the management console, effectively preventing erroneous judgments caused by staff unfamiliar with the tunnel and mismatching the on-site audio and video.

[0019] 2. This solution utilizes high-definition synchronous directional window loudspeakers inside the tunnel and 8-source phased array technology at the tunnel entrance to construct an audio transmission system with "precise regional coverage and directional sound beam penetration." The loudspeakers inside the tunnel are arranged at 100-meter equidistant intervals, combined with a turbine-style acoustic cavity design, enabling independent broadcasting within a single loudspeaker's coverage area. When multiple extensions call simultaneously, staff can precisely locate the loudspeaker area corresponding to each extension via a control panel, preventing audio mixing at different accident points. The 8-source phased array window loudspeakers at the tunnel entrance further overcome the limitations of traditional broadcasting methods, such as "omnidirectional diffusion and vehicle window obstruction." Through phase control of 8 independent sound-generating units, a directional sound beam is formed, increasing sound energy concentration by more than 5 times compared to traditional loudspeakers. Even if a vehicle is traveling 100 meters away from the tunnel entrance, the sound beam can penetrate closed windows, delivering crucial instructions to the driver in advance and significantly reducing the risk of secondary accidents. Attached Figure Description

[0020] Figure 1 This is a logic block diagram of Embodiment 1 of an emergency broadcasting device for highway tunnels according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the front view of the soundproof cover in Example 2;

[0022] Figure 3 This is a partial cross-sectional view of the soundproof enclosure in Example 2.

[0023] The reference numerals in the accompanying drawings include: cover 1, sound insulation panel 2, cover door 3, connecting plate 4, and notch 5. Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] The basic implementation examples are as follows: Figure 1 As shown:

[0026] An emergency broadcasting device for highway tunnels includes an emergency telephone broadcasting system platform, a communication module (aggregation industrial Ethernet switch), and multiple communication terminals.

[0027] Multiple communication terminals are electrically connected to the communication module, and the communication module is electrically connected to the emergency telephone broadcasting system platform;

[0028] Multiple communication terminals are fixed at intervals within the tunnel. Each communication terminal includes a synchronous control unit and a camera. The synchronous control unit is equipped with a backlit emergency call button and a speaker with a turbine-type acoustic cavity design. The synchronous control unit is used to communicate with the emergency telephone broadcasting system platform. The camera is used to transmit the images of the synchronous control unit and the surrounding environment to the emergency telephone broadcasting system platform through the communication module.

[0029] The emergency telephone broadcasting system platform is connected to the tunnel broadcasting system via an electrical signal through a communication module. The tunnel broadcasting system includes broadcasting inside the tunnel and broadcasting at the tunnel entrance. The broadcasting inside the tunnel includes multiple loudspeakers evenly spaced inside the tunnel. The broadcasting at the tunnel entrance includes two sets of window loudspeakers, which are respectively located at the two tunnel entrances. The two sets of window loudspeakers are independent 8-source phased array window loudspeakers, which are composed of an array of 8 independent sound-generating units.

[0030] The tunnel broadcast system uses high-definition synchronous directional window loudspeakers, with a spacing of 100 meters between each loudspeaker.

[0031] The synchronous control unit has a built-in optical transmission module. The optical transmission modules form one or more self-healing optical Ethernet switching ring networks, which converge on the switch in the substation. The switch transmits the data to the emergency telephone broadcasting system platform through the optical fiber transmission network via the electrical port.

[0032] The emergency telephone broadcasting system platform includes a main control unit, a control console, a broadcast phone, and a broadcast microphone. The main control unit, control console, and broadcast phone are all electrically connected to the switch, and the broadcast microphone is electrically connected to the control console.

[0033] The main control unit is used for scheduling and managing communication terminals and tunnel broadcasts; the control console is used to run management software for communication terminals and tunnel broadcasts; the main control unit implements functions such as managing all emergency calls, synchronous broadcasts, registration configuration, number allocation, exchange processing, routing relay, access control, storage recording, and query management in the tunnel.

[0034] The console runs management software for communication terminals and broadcasting systems. Through a fully Chinese human-machine interface, it enables functions such as partition management of terminal devices, terminal status, scheduling operations, queue management, music management, broadcast management, recording monitoring, record query, collection and management of tunnel abnormal events, video linkage, and contingency plan management. The console can also call terminal devices with one click by dialing numbers or using Chinese shortcut keys to initiate two-way high-definition audio and video calls and high-definition voice broadcasts.

[0035] The human-machine interface can display the call information of the extension in a timely manner, including the call time, the extension kilometer marker (station number), and the direction of travel.

[0036] When the center initiates a call with the tunnel, the system automatically links the communication terminal inside the tunnel, and the camera image automatically pops up on the management console, allowing users to see the video image of the communication terminal inside the tunnel even before the call is answered. At the same time, management personnel can record the linked video in real time and capture images, achieving audio and video synchronization for the alarm call. The video image is automatically cut off when the call ends, and the linked video images can be automatically queued.

[0037] The main control unit can automatically detect the status of equipment at the tunnel site, including the operating voltage status of the sub-unit power supply, the network status of the sub-unit optical port, the network status of the sub-unit electrical port, and the speaker status. When the detected data exceeds the set threshold, the platform can promptly issue an alarm and display a fault message on the control panel with a prominent icon. On-site personnel can also perform manual monitoring or timed testing through the control panel, and summarize, statistically analyze, and export the test results, which can also be displayed in an intuitive format.

[0038] The broadcast phone supports the following network features: IPv4 / IPv6, SIP v1 (RFC2543), v2 (RFC3261), UDP / TCP / DNS-SRV (RFC 3263), 802.1p / Q tagging (VLAN), Layer 3 ToSDSCP, SRTP, TLS, HTTPS certificate management, configuration file encryption, Adb encryption, MD5 / MD5-SESS verification mechanisms, OpenVPN, IEEE 802.1X, redundant servers, and STUN intranet penetration. Its physical features include 27 touch-programmable buttons, 8 function keys, and mute / headset / hands-free buttons with indicator lights; two 10M / 100 / 1000Mbps adaptive switched Ethernet ports supporting PoE power supply (Class 3); built-in Wi-Fi and Bluetooth modules; one RJ9 handset port and one RJ9 headset port; support for cascading up to three color screen extension stations; power input: 100-240V / AC 50-60Hz; output: 5V / 2A / DC. Operating ambient humidity: 10~95%; operating ambient temperature: -10~40℃; bare unit dimensions (W*D*H*T): 259.4mm*220mm*239mm*42.6mm.

[0039] The switch is a 24-port 10 / 100 / 1000BaseT(X) switch and an 8-port 1000BaseFX switch (SC / FC / ST / SFP optional).

[0040] The synchronous control unit supports international standard communication protocols and functionalities such as SIP 2.0, TCP / IP, RTP / RTCP, HTTP, ICMP, ARP / RARP, DNS, DHCP, NTP / SNTP, TFTP, AEC, VAD, CNG, BNE, NR, PLC, DTMF, and SIP INFO. It supports voice codec protocols such as G.711a / u, G.723.1, G.726-32K, G.729AB, and G.722, and video codec protocols such as H.263 and H.264.

[0041] The specific implementation process is as follows:

[0042] This solution uses an Ethernet aggregation switch as the core hub for information transmission, tightly connecting the emergency telephone broadcasting system platform, communication terminals, tunnel broadcasting, and cameras. This enables stable and high-speed data flow and interaction between devices. In the event of an emergency in the tunnel, personnel only need to press the backlit emergency call button on the extension unit. The synchronous control extension unit immediately initiates a call request to the emergency telephone broadcasting system platform through the switch. The microphone built into the synchronous control extension unit then activates, starting to collect on-site sound, and simultaneously links with the camera to transmit on-site images to the platform in real time. The synchronous control extension unit uses a speaker with a turbine-style acoustic cavity design, which optimizes sound propagation through a special acoustic structure, reducing distortion and making the voice clearer.

[0043] The tunnel's public address system consists of multiple high-definition, synchronous directional window loudspeakers spaced 100 meters apart. When the emergency telephone broadcasting system platform issues a broadcast command via the main control unit, the switch quickly transmits the signal to each high-definition, synchronous directional window loudspeaker. This ensures synchronized audio signal playback, avoids sound confusion, and accurately delivers the audio signal to every corner of the tunnel. The tunnel entrance broadcast system uses independent 8-source phased array window loudspeakers, each composed of an array of eight independent sound-generating units. Through phase control technology, these units work together to form a directional sound beam. When a camera at the tunnel entrance detects a vehicle approaching, the broadcast sound beam from the independent 8-source phased array window loudspeakers penetrates the vehicle window, allowing the driver to receive critical information such as advance warnings of accidents and speed limits.

[0044] Example 2

[0045] The difference between Example 2 and Example 1 is as shown in the appendix. Figure 2 and attached Figure 3 As shown: This also includes multiple soundproof enclosures, with multiple synchronous control sub-units fixedly installed inside each enclosure, corresponding one-to-one. Each soundproof enclosure includes a mounting frame and a enclosure body 1. The mounting frame is bolted to the wall inside the tunnel, and a connecting plate 4, vertical and parallel to the wall, is welded to the mounting frame. The synchronous control sub-units are fixed to the side of the connecting plate 4 facing away from the wall using screws. One side wall of the enclosure body 1 has a notch 5 at its bottom, the same shape and size as the connecting plate 4. The enclosure body 1 is snapped onto the connecting plate 4 through the notch 5. The enclosure body 1 is a box-shaped enclosure with an open bottom, a cross-section of 1 square meter, and a hemispherical top. The enclosure body 1 is double-layered, with a soundproof panel 2 installed in the interlayer. An opening is located on the left side of the enclosure body 1, with a hinged door 3 for closing the opening.

[0046] When using the soundproof enclosure, open the enclosure door 3 and enter through the opening. Because the enclosure's cross-section is 1 square meter, it can accommodate a user. After entering, close the door 3 to use the synchronous control unit for calls. The enclosure body 1 is double-layered, with a sound-absorbing cotton-made sound insulation panel 2 installed between the layers. Therefore, during calls, the soundproof enclosure significantly reduces background noise in the tunnel. When maintenance of the synchronous control unit is required, simply lift the heat insulation cover upwards and remove the soundproof enclosure from the connecting plate 4.

Claims

1. An emergency broadcasting apparatus for a highway tunnel, characterized by: Includes an emergency telephone broadcast system platform, communication modules, and multiple communication terminals; Multiple communication terminals are electrically connected to the communication module, and the communication module is electrically connected to the emergency telephone broadcasting system platform; Multiple communication terminals are fixed at intervals inside the tunnel. Each communication terminal includes a synchronous control unit and a camera. The synchronous control unit is used to communicate with the emergency telephone broadcasting system platform. The camera is used to transmit the images of the synchronous control extension and the surrounding environment of the synchronous control extension to the emergency telephone broadcasting system platform through the communication module.

2. The emergency broadcasting device for a highway tunnel according to claim 1, wherein: The emergency telephone broadcasting system platform is connected to the tunnel broadcasting system via an electrical signal through a communication module. The tunnel broadcasting system includes broadcasting inside the tunnel and broadcasting at the tunnel entrance. The broadcasting inside the tunnel includes multiple speakers evenly spaced inside the tunnel. The broadcasting at the tunnel entrance includes two sets of window speakers, which are respectively located at the two tunnel entrances. The window speakers are used to allow vehicles at the tunnel entrances to receive the broadcast sound field.

3. An emergency broadcasting device for a highway tunnel according to claim 2, characterized in that: The tunnel broadcasting system uses high-definition synchronous directional window loudspeakers, with a spacing of 100 meters between each loudspeaker.

4. An emergency broadcasting apparatus for a highway tunnel according to claim 3, wherein: The two sets of window speakers are independent 8-source phased array window speakers, which are composed of 8 independent sound-generating unit arrays.

5. An emergency broadcasting device for highway tunnels according to claim 4, characterized in that: The communication module uses a converged industrial Ethernet switch.

6. An emergency broadcasting device for highway tunnels according to claim 5, characterized in that: The synchronous control unit is equipped with a backlit emergency call button.

7. An emergency broadcast device for a highway tunnel according to claim 6, characterized in that: The loudspeaker in the synchronous control unit is a loudspeaker with a turbine-type acoustic cavity design.

8. An emergency broadcasting device for a highway tunnel according to claim 7, characterized in that: It also includes multiple soundproof enclosures, with multiple synchronous control sub-units fixedly installed inside the soundproof enclosures, corresponding one-to-one with each enclosure. The soundproof enclosure includes a mounting frame and an enclosure body. The mounting frame is fixedly installed on the wall inside the tunnel, and a connecting plate is fixedly connected to the mounting frame. The synchronous control sub-unit is fixedly installed on the side of the connecting plate facing away from the wall by screws. The enclosure body is detachably connected to the connecting plate. The enclosure body is a box-shaped enclosure with an open bottom and a hemispherical top. The enclosure body is double-layered, with a soundproofing panel installed in the interlayer of the enclosure body.

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