Product details:

1、 MR-GD30 Fiber Optic IP Emergency Telephone Broadcast System Composition

1.1 MR-GD30 fiber optic IP emergency telephone broadcasting system includes

The MR-GD30 fiber optic IP emergency telephone broadcasting system includes monitoring center equipment, tunnel equipment, and transmission optical cables.

The monitoring center equipment includes: a central control panel,IP telephones, central servers, gateways, core switches, routers, and other equipment. Tunnel equipment includes: tunnel host ONU equipment, tunnel extension, and strong directional speakers.

The MR-GD30S fiber optic emergency telephone control center equipment realizes registration configuration, number allocation, exchange processing, routing relay, permission management, storage recording, query management functions, etc. for all intercom and broadcasting equipment in the entire tunnel section.

The central control panel is equipped with unified scheduling and management of intercom broadcasting system, realizing functions such as partition management, terminal status, scheduling operation, queuing queue, music management, broadcasting management, meeting management, address book management, SMS management, etc. for front-end equipment; It has commonly used scheduling functions such as intercom, shouting, splitting, inserting, and monitoring. The intercom broadcast phone can work independently of the management console and initiate intercom and broadcast functions; Install telephone access gateway equipment to enable mutual communication between the internal intercom broadcasting system and external telephones, ensuring communication between the tunnel and the outside world.

Topology diagram of MR-GD10DRY fiber IP emergency telephone broadcasting system

1.2 Technical characteristics and advantages of the system

1.2.1. Adopting TCP/IP network architectureMeet multiple networking methods

Our company independently developedThe MR-GD30 tunnel emergency telephone broadcasting system adopts TCP/IP network architecture and has multiple networking forms, including single fiber series connection structure, dual fiber ring network structure, and 1+1 fiber parallel structure; The fourth is the dual 1+1 fiber parallel self-healing ring structure; The first structure only requires one fiber optic cable, and all emergency calls are cascaded and connected in series on this fiber optic cable; The second structure occupies two optical fibers and adopts a "single fiber bidirectional transmission, dual fiber self-healing ring network"; The third structure uses one fiber to branch and connect emergency calls along the way, while the other fiber branches and is redundant. The fourth structure adopts a dual 1+1 fiber parallel self-healing ring structure by connecting 2 cores of 4-core optical fibers in pairs.

1.2.2. Automatic alarm for fiber optic cable faults, easy to maintain

Our company's fiber optic emergency telephone system can effectively detect the communication status of the backbone fiber and report fault information to the center through the backup fiber when the backbone fiber is interrupted. And mark the fiber optic fault section on the PC map for easy troubleshooting and maintenance of fiber optic faults.

1.2.3 Integration with tunnel broadcasting system, unified control and management

The tunnel extension of MR-GD30 fiber optic IP emergency telephone broadcasting system can output tunnel broadcasting control signals, and the external broadcasting amplifier can directly drive the strong directional speaker. At this time, the emergency telephone extension and tunnel broadcast can work simultaneously, and the control center can perform zoning and fixed-point broadcasting and detection of the tunnel broadcast.

1.2.4 System Network Management and Remote Maintenance

The MR-GD10 fiber optic emergency telephone broadcasting system can be networked arbitrarily, forming a unified emergency telephone secondary or multi-level monitoring network from several road sections, and implementing unified network management. Two supervision modes, "monitoring" and "surveillance", can be implemented in the higher-level network management center (or provincial monitoring center). At the same time, maintenance personnel can remotely maintain emergency telephone equipment in each sub center through the Internet.

1.2.5 Intelligent statistics and queries

The duty officer can conduct various statistical queries on tunnel equipment failures through the control panel in the monitoring center. They can classify and query according to comprehensive factors such as time, location, accident type, vehicle type, or equipment failure type. The statistical query results are displayed and printed out in various forms of charts (grids, bar charts, pie charts, etc.). By querying emergency telephone devices, the overall operation of the system can be monitored at any time, and by querying traffic accidents, the traffic conditions on the road can be understood in a timely manner.

1.2.6 Excellent detection methods

The system detection method (inspection or full inspection) adopts the method of sending detection streams one by one, waiting for detection results one by one, and using broadcast+time triggered algorithm during full inspection, effectively solving the above problems of system full inspection; The control host only needs to send one full inspection command, and all emergency calls will respond immediately. The system triggers the extension to send the detection results to the control center through a time factor, and it only takes less than 6 seconds to complete 100 emergency calls.

II MRIntroduction to GD10 Tunnel Emergency Telephone Broadcasting Equipment

2.1 Introduction to the functions of the central control panel

1. Capable of accepting calls from roadside emergency telephone extensions within the jurisdiction. The identification of the main emergency phone number can be displayed on the console.

2. The menu display mainly includes: signal section station number; Signal transmission time; Type of accident; Help content; Service project information; The operator can input information using a keyboard or mouse.

3. The emergency phone control panel has an automatic recording function, which uses digital recording and stores events on the hard drive. There is a remaining storage time prompt during recording, and playback is completed through keyboard operation. Automatic printing, ringing, and equipped with two serial communication interfaces.

4. The duty officer can call any emergency telephone extension in the tunnel from the center, and the call operation only needs to touch the icon on the desktop. After the duty officer picks up the phone, a duplex call is automatically established.

5. Capable of conducting both manual and automatic testing of the system, and displaying the test results automatically.

6. Capable of storing and displaying calls that occur simultaneously.

7. Can interrupt and maintain the connection of the call extension.

2.2 Main technical performance indicators of central control

industrial-grade21 inch touchscreen tablet, Windows operating system.

Single machine system control capacity:≥ 512 extensions.

Voice frequency band:300～3400Hz；

Call link: No blocking (all calls are unobstructed)

Optical connector:FC/PC

Call connection time:≤ 6 seconds

Working voltage:AC 220V±10% 50Hz DC -52V±2V

current Control center host equipment≤400mA

Optical signal transmission power:≥-6dBm；

Sensitivity of optical signal reception:≤－40dBm；

Audio output resistance:600Ω;

Working wavelength: 1310nm or 1550nm;

power waste:≤500W；

Harmonic distortion:<5% (1kHz);

Recording storage time:≥2000H

Maximum allowable attenuation of optical cable lines: 30dBm (1310nm).

Working temperature: 0 ℃~35 ℃ (central equipment)

Relative humidity 30%~85% (central equipment)

It has testing and remote control functions.

The two-level system of emergency calls can simultaneously receive alarms;

Other technical performance indicators: meet JT/T8200-93 standard. Working mode: full duplex, capable of dual channel simultaneous alarm;

2.3 MR-GD10 Tunnel Emergency Telephone Broadcast Center Server Host

The central server is used for the installation of application software and local storage of running data. Support the new generationIntel ® Xeon ® The E5-2600 v3/v4 series processor is a standard 2U 2-way rack server, with a maximum of 20 cores per processor. With a reasonable design, it can be configured with up to 1TB of memory and 16TB of local storage, achieving a perfect balance between performance and density. It is rack mounted (2U).

2.4 MR-GD10 Tunnel Emergency Telephone Broadcast Core Switch

For the sake of safety and management convenience, mainly to reduce the harm of broadcast storms, it is necessary to divide large regional networks into small regional networks according to functional or geographical factors. This makesVLAN technology is widely used in networks, and communication between different VLANs needs to be forwarded through routers, with the increasing number of inter network visits. Simply using routers to achieve inter network access not only limits the number of ports, but also the slow routing speed, which limits the size and access speed of the network. Based on this situation, layer 3 switches have emerged. Layer 3 switches are designed for IP, with simple interface types and strong layer 2 packet processing capabilities, making them very suitable for data routing and switching in large area networks.

2.5 MR-GD10 Center IP Telephone

Technical Specifications:

adoptTI TITAN chipset and TI audio engine;

support6 lines with 16 programmable buttons;

4-inch 320x160 pixel graphic LCD with backlight;

high fidelity(HD) Sound quality: Broadband voice encoding, HD controller, HD hands-free;

XML browser, supporting BLF/BLA, virtual private network (VPN);

Power over Ethernet（PoE）、 Dual Ethernet ports and earphones;

2.7 Functions and Technical Specifications of Tunnel Extension MR-GD30-1

MR-GD30-1 emergency telephone broadcast tunnel extension, realizing voice communication and broadcasting functions inside the tunnel.

1.Emergency phone users can directly communicate with the operators on the emergency phone control panel and make button to button calls(Easy call operation)

After the user presses the extension button, the extension can automatically make a call to the monitoring center console host and transmit basic information such as the local kilometer number and up and down directions.

3. Each emergency call has a unique address code for uploading to the control center, determining the call location, receiving calls, and detecting.

4. After the console duty officer responds, they can promptly establish full duplex communication.

5.The console can be connected to anyTwo emergency telephone extensions are communicating simultaneously.

6. Able to receive detection commands from the console host, promptly check the extension, and send the detection results to the console host.

7.anyThe failure or damage of one or more emergency telephones should not affect the communication between other emergency telephones and the control panel.

8. The extension can automatically send voice prompts and report the system's working status when making a call.

9. Able to accept various calls from the console host and automatically release the circuit after the console hangs up.

10. During the call, the voice is clear, the sound is loud, and there is no feedback whistling.

11. The extension has taken various lightning protection measures and has a good lightning protection effect.

12.Broadcast amplifier communication, with the option to turn on and off the broadcast amplifier, and can output audio signals to the broadcast amplifier.

13. The extension is equipped with high-strength imported reflective film illuminated signs in both the welcoming and delivering directions, and the sign pattern and color comply with national standards.

14.The main circuits inside the control host of this system are all usingThe "hot standby" structure design ensures that the main circuit operates normally and the backup circuit automatically switches to operation in case of a main circuit failure. By utilizing backup circuits, the system can provide two connection channels simultaneously, ensuring that the console can communicate with two different roadside extensions at the same time.

15. The system is equipped with lightning protection, and the inlet and outlet of the host, extension system, and various amplification load areas must be connected to lightning protection security terminals to prevent damage to the host, extension, and amplifiers caused by surges induced by lightning.

16. This system is equipped with overvoltage protection. After the device is turned on, it should automatically monitor the voltage. If the battery runs low or the voltage is insufficient, the computer in the monitoring center will immediately sound an alarm.

MR-GD10DRY Tunnel Extension

Main technical performance indicators of tunnel emergency telephone extension:

Voice frequency band:300～3400Hz；

Rated sound pressure level intensity:≥95dBA； (Measured 40cm in front of the extension)

Operating temperature of the extension: -40℃～＋60℃；

Working humidity of the extension:≥95%（35℃）；

Nonlinear distortion:≤5%；

Grounding resistance requirements:≤10Ω;

Working voltage:DC 12V

Current: Emergency telephone on the roadside≤ 45mA (standby mode)

≤ 200mA (working state)

Optical signal transmission power:≥-6dBm（1310nm）；

Sensitivity of optical signal reception:≤－40dBm（1310nm）；

Mean time between failures（MTBF: ≥ 100000 hours;

Maximum allowable line attenuation:30dB（3000Hz）

Protection level:IP65。

2.8 Tunnel Strong Directional Horn

The strong directional horn speaker consists of a vibration system (high-frequency head) and a horn. The vibration system is similar to a paper cone speaker, except that its diaphragm is not a paper cone, but a spherical diaphragm. The vibration of the diaphragm radiates sound waves into the air through a horn (after two reflections). It has a high frequency and large volume, and is commonly used for tunnel and square field sound reinforcement.

technologyparameter：

Input power:30W（70，25Vline)
Input impedance:8Ω, 21Ω, 42Ω, 63Ω
Preset impedance:170Ω
frequency response:350HZ-5KHZ(-10DB)
output power:1,3,5,10,15,20，25，30，35，40，50，80W
sound pressure level(1M/1W)

3、 Tunnel broadcasting system function

When an emergency occurs in a tunnel and an urgent evacuation is requiredThe dispatch and command personnel of the control center can use this system to send instructions to the scene through loudspeakers, commanding on-site personnel to evacuate the dangerous area quickly, orderly, and safely. On site personnel can also use any terminal inside the tunnel to shout and talk on site, report the situation, and minimize the impact of disasters and secondary effects during the rescue process after the disaster.

1. Remote telephone automatic command broadcasting, setting up telephone access ports. When incoming calls need to be broadcasted, pressing the telephone access button can achieve remote telephone amplification broadcasting, such as leader telephone, fire alarm telephone, etc.

2. The broadcast amplifier is equipped with overvoltage protection. After the device is turned on, it should automatically monitor the voltage. If the battery is dead or the voltage is insufficient, the computer in the monitoring center will immediately sound an alarm.

3. The central broadcasting console can make individual, partitioned, or collective calls to the tunnel power amplifiers.

4. The central broadcasting console can select and turn off the tunnel power amplifier. When the broadcasting system is turned off, the tunnel extension will enter a power-off state to reduce power consumption and improve service life.

5. The wired broadcasting system and emergency telephone system can work independently, and emergency telephones can be called simultaneously when calling broadcasts in the control center. Emergency telephones can be used to monitor the broadcast effect.

6. The control center can detect the working status of the tunnel power amplifier.

7. The broadcasting system is linked with the monitoring system, and in case of emergencies such as fires, it can automatically play pre-set broadcasting recordings to the scene of the incident.

8. The control equipment and transmission optical cable of the monitoring sub center are shared with the emergency telephone subsystem, which can perform full broadcast, multicast, and selective broadcast, and can play at least multiple audio sources simultaneously.

9. It can be linked and displayed with the tunnel monitoring screen of the monitoring sub center.

10. It has a monitoring function. Press the load area monitoring button to monitor the broadcast content in that load area and has digital recording function.

11. Load monitoring, capable of remote automatic detection of terminal loads, alerting the host in case of faults, and displaying them in the monitoring sub center.

12. Networking function: The system is configured with a LAN interface to connect with the monitoring computer network and transmit system status information such as speaker on/off and faults to the monitoring computer.

13. Automatic voice warning function, the automatic voice system can be activated for uninterrupted and repeated voice broadcasting.

When a broadcast amplifier malfunctions, it can immediately report the fault to the control center for maintenance of the broadcast system.

The power of the broadcasting amplifier can be customized according to the bidding requirements, and the maximum cannot exceed 500W.

16. The broadcasting amplifier adopts a constant voltage, which can ensure sufficient communication distance and distortion free sound quality.

17. Broadcast amplifiers and tunnel speakers have IP65 protection function.

18. The equipment inside the tunnel should have moisture-proof and anti-corrosion functions.

four Emergency response plan management function

The emergency management and disposal system provides functions including plan management, event forecasting and early warning, event grading, plan activation, road network coordination and command dispatch, emergency resource management, emergency information release, and disposal result analysis.

4.1 Plan Management

1. The system should provide pre formulated emergency response plans for the scope of the highway network.

2. Plan configuration: Provides functions such as editing, modifying, and combining plans, which can be modified online by authorized users.

3. Generation of emergency response plan

There are two main ways to quickly generate emergency response plans: one is to automatically match emergency response plans; The second is the development and deployment of rapid emergency response plans. The results generated from the disposal plan are presented in various forms such as graphics, tables, and texts, including basic event information, surrounding information, disposal process, organizational structure, disposal measures, emergency support, and post disaster recovery.

4.2 Event forecast and warning

Using collected and shared data on highway meteorology and geological hazards for analysis and prediction, providing analysis and impact prediction services for the operation status of the highway network in the short to medium term, and predicting and analyzing possible emergencies in the road network for early warning. Or obtain warning information through phone, fax, mobile phone, SMS and other means.

The channels for obtaining information can be basically divided into the following types: firstly, from emergency event reports (telephone, fax, pictures/images, text, etc.); The second is the warning information submitted by the lower level emergency platform (district center or road section sub center). The system accesses warning information through an interface and displays and consults it in a list format by classification. The event forecasting and early warning system also provides manual information input function. After receiving the warning information, the system automatically triggers an audible and visual alarm prompt in GISLocate the alarm signal on the diagram.

4.3 Event Grading

The level of highway traffic emergencies is characterized by the warning and response levels of emergencies in the "Emergency Plan for Highway Traffic Emergencies". Highway emergencies are classified into four levels based on the type of emergency, accident consequences, transportation demand, and traffic impact, namelyGrade I (particularly significant), Grade II (significant), Grade III (significant), Grade IV (general), and represented by red, orange, yellow, and blue.

When a sudden public incident occurs, the monitoring center is generally responsible for handling itLevel I (particularly significant) and Level II (significant) sudden public events. Level III (major) and Level IV (general) public emergencies shall be handled by the local management unit and reported to the company in accordance with regulations. The company shall cooperate with the local management unit in the event handling work and report to the Provincial Department of Transportation.