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SIP Emergency Telephone and Broadcast System

SIP Emergency Telephone and Broadcast System
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Description
SIP Emergency Telephone and Broadcast System

I. Project Overview
Highway tunnel monitoring project, emergency telephone cable broadcasting system is a dedicated communication system for emergency drivers who provide emergency rescue in the event of a traffic accident. It is also a road monitoring system that collects vehicle faults and traffic accident information on the road and monitors the road. The main equipment for the operation.

IP visual emergency telephone broadcasting system is an integrated communication platform for emergency telephone and cable broadcasting, which is a combination of emergency telephone and cable broadcasting. The same operation screen is used for alarm and broadcast and access to Ethernet Layer 3 switch. Supporting or linking data requests from other subsystems. The transmission fiber or network is used independently, and the functions are independent of each other and do not affect each other.
Set up an emergency telephone cable broadcast centralized console at the tunnel management station to manage the monitoring and control of emergency telephones and broadcasting systems inside and outside the tunnel. The emergency telephone console is used in conjunction with the cable broadcast console.
The power supply mode of the tunnel emergency telephone and the broadcasting system adopts the nearest power supply mode, and the AC 220V AC power supply in the power distribution room near the tunnel hole is used for power supply, or the power distribution box is powered. The power supply mode of the hole-type emergency telephone extension is battery-powered (solar battery and other rechargeable batteries), or the AC220V is taken from the tunnel port for power supply.
2. Composition and network structure of expressway emergency telephone broadcasting system
1, system composition
The emergency telephone broadcasting system is mainly composed of an emergency telephone cable broadcast console, an emergency telephone extension, a speaker, a power amplifier, a communication optical cable, and a power cable:
Among them, emergency telephone and cable broadcasting workstations: mainly equipped with WINDOWS operating system, emergency telephone broadcasting software and other application software.
Emergency telephone cable broadcast console equipment: mainly includes system emergency telephone and broadcast system combo control host, alarm designated telephone, printer, optical distribution frame, microphone, broadcast source device, recording device, lightning protection power box, etc. ;
Emergency telephone extension equipment: mainly includes tunnel type emergency telephones, column-type emergency telephone extensions outside the tunnel.
Power amplifier: 60W, 120W, 240W power controller, constant voltage 70V, 110V output.
Speaker: Strong pointing speaker, power 50W, 25W, 15W.
Local Area Network: Use the network resources of the tunnel site.
Power cable: power cable with different specifications;
2, system network structure
1. Local area network: use the network resources of the tunnel site.
2. Broadcast partition; the emergency telephone system and the cable broadcasting system can call at the same time without mutual interference. The emergency telephone in the tunnel can not only inform the monitoring center of the emergency information, but also monitor the tunnel broadcast effect in the tunnel. The broadcast can be performed in the monitoring center. Single call, slice call, full call, volume adjustment, audio signal is output by the audio controller of the emergency phone, and the broadcast power amplifier is directly connected to the strong pointing speaker by the RVV cable. Each emergency phone and amplifier module has a unique address code, 15W speaker inside the tunnel; 25W waterproof angle speaker outside the tunnel
3. Secondary management mode: The emergency telephone of this system can be arbitrarily set up, and the emergency telephones of several road sections are formed into a unified emergency telephone secondary or multi-level monitoring network to implement unified network management. In the upper-level network management center (or provincial monitoring center), two supervision modes of “only supervision and no control” and “supervised and controlled” can be realized. At the same time, maintenance personnel can remotely maintain the emergency telephone equipment of each sub-center through the Internet.
4. Emergency call setup; an emergency call bar is placed at 200 m intervals in the tunnel. An emergency telephone call column is set up at each tunnel entrance (about 10 meters from the exit).
The cable broadcast system speakers in the tunnel are installed at intervals of about 50m-100m, and are installed in the direction of driving. The external speakers of the tunnel can be mounted on the camera column of the monitoring system, pointing in two directions. The power amplifier uses a near-end amplification. The power amplifier shares the same cavity with the emergency telephone extension or is installed directly in the emergency telephone box.
5. Broadcast control mode; Due to the centralized control mode of emergency telephone and broadcasting system, no signal cable from the center to the power amplifier is needed in the tunnel. The central broadcast signal controls each power amplifier through the transmission channel of the emergency telephone, at each emergency telephone. Transfer the signal to the amplifier near the emergency phone. Each amplifier can drive four 30W speakers or six 20 speakers, and the speaker and amplifier cables use a 2 x 1.5 specification cable or similar cable.
6. Broadcast recording; microphone recording from the console host directly to the recording card, recording by digital recording. Recorded files are stored on your computer's hard drive.
7. System power supply; the power supply mode of the tunnel emergency telephone and the broadcasting system adopts the nearest power supply mode, and is powered by the AC220V AC power supply in the power distribution room near the tunnel hole. The power cable from the UPS distribution box of the tunnel substation is urgent. Telephone extensions and broadcast power amplifiers.

Third, the main features and advantages of the emergency telephone broadcasting system
1. Combine with the tunnel broadcasting system to achieve unified control and management
The tunnel extension of the fiber optic emergency telephone system can output a tunnel broadcast control signal, and the external broadcast power amplifier can directly drive the strong pointing speaker. At this time, the tunnel emergency telephone extension and the tunnel broadcast can work at the same time, and the sub-center can perform "program-controlled" broadcast and detection on the tunnel broadcast.
2, system network management and remote maintenance
The optical fiber emergency telephone system can be arbitrarily networked, and the emergency telephones of several road sections are formed into a unified emergency telephone secondary or multi-level monitoring network to implement unified network management. In the upper-level network management center (or provincial monitoring center), two monitoring modes of “monitoring” and “monitoring” can be realized. At the same time, maintenance personnel can remotely maintain the emergency telephone equipment of each sub-center through the Internet.
3, intelligent statistics and query
The duty officer can perform various statistical inquiries on traffic accidents and equipment failures on the operation management computer (PC), and can perform classified statistical inquiry according to comprehensive factors such as time, place, accident type, vehicle type, or equipment failure type, and statistical query results. Display and print out in various charts (tables, histograms, pie charts, etc.). Through the inquiry of the emergency telephone equipment, the overall operation of the system can be grasped at any time, and the traffic condition of the road can be known in time through the inquiry of the traffic accident.
 
Fourth, emergency telephone console, telephone extension, broadcast system function
1), the main function of the console host
1. It is possible to accept calls from emergency telephone extensions on the roadside side of the jurisdictional section. The primary call emergency call identification can be displayed on the console.

2. The menu display contents mainly include: signal section station number; signal transmission time; accident type; help content; service item information; operator can input information by keyboard or mouse.
3. The emergency telephone console can automatically record the function. The recording is stored on the hard disk by digital recording and sub-event. There are remaining storage time prompts during recording, and the playback is completed by keyboard operation. Automatic printing, ringing and two serial communication interfaces.
4. The attendant can call the emergency telephone extension in any tunnel in the center. The call operation can be performed by simply double-clicking the icon on the desktop, and the duplex visual call is automatically established after the attendant picks up the phone.
5, can carry out manual and automatic testing of the system, and can automatically display system test results.
6, can store and display simultaneous calls.
7. It is possible to interrupt and maintain the connection of the calling extension.
8. The emergency telephone console computer and the monitoring sub-center emergency telephone console computer of the tunnel station relate to the monitoring computer network by using the local area network mode, and the various data of the emergency telephone system can be input and monitored into the central computer network in real time. The transmitted content includes at least the following:
1 The working status of the emergency telephone system (normal, test, fault);
2-way emergency telephone number, station number, and its corresponding status, test results;
3 The contact status of the emergency telephone console with the roadside emergency telephone (on, hold, disconnect, and during the call).
9. The emergency telephone console should be able to switch between emergency telephone extensions in the jurisdiction of display, inquiry, operation (on, hold, disconnect, call, etc.).
10. The operator can realize the man-machine dialogue with the emergency telephone computer through the emergency telephone keypad and the monitor.
11. The emergency telephone console computer adopts WINDOWS/7/8/10 operation window, and the interface, screen display map and operation menu are all finished. Various parameter settings of the system are performed on the computer. Remote maintenance, software upgrades, and system expansion can all be done online.
12. The emergency telephone control system should have a statistical report function for the local road section accident rate and the local time period accident rate.
13. All extension calls are not blocked. When there are multiple extensions, the call can be automatically queued and the name of the call queued extension is displayed. The queued call is processed on a first-come, first-served basis, or two extensions can be processed at the same time.
14. Record of duty: All the events, faults, alarm tests and input information of this shift are suitable for the management personnel to transfer the shift and review the management mode.
15. The system sets multi-level management passwords (at duty level, administrator level, configuration staff level), and various file, recording and other attendant levels cannot be deleted casually.
16. The on-screen map should display the map sketch in proportion, and the important sections should have a partial zoom function.
17. The emergency telephone will strike, damage, open the door, etc., and the center can immediately display the sound and light alarm signal. When a traffic accident user calls an alarm and the extension is stolen, destroyed, or automatically alarmed when the fault occurs, the scene image of the extension immediately appears on the electronic map. The alarm can be seen, and the extension can be seen within 20 meters of the uplink and downlink directions. The road surface condition realizes visual dialogue. The monitoring center console can accurately judge the nature of the accident and quickly deal with the fault. The image can be recorded and stored in the computer, intelligently query and count, provide favorable evidence for accident handling, and monitor the whole line.
18. The change, increase or decrease of the emergency telephone equipment on the inner side of the equipment capacity of the current section can be realized by simple operation of human-machine commands.
19. It provides a full Chinese interface, and has help buttons on all interfaces. All interfaces provide users with mouse and shortcut keys to adapt to different operating habits.
20. The system control host adopts the hot standby design. When the main system fails, the backup system can be put into operation in time to ensure that the system does not interrupt communication.
21. When the operation management computer (PC) fails, the system can maintain the basic call function and store the call information generated during this time.
22. The attendant can perform various tests on the extension at any time, including individual extension detection, partial extension detection and full partial machine inspection. Detection can be done at any time or at regular intervals. The test results can be statistically queried according to time, location, equipment failure type and other factors, and the results are displayed and printed out.
23. The operation management computer can perform various statistical inquiry on the traffic accident record, and can conduct comprehensive statistical inquiry according to the time, place, accident type, vehicle type, accident severity and other factors. Statistical query results can be displayed and printed out in different forms (tables, histograms, pie charts).
24, operation management computer software set up two (or more than two) password management, operator level and maintenance level. Can effectively prevent unauthorized operations and misuse.
25. The operation management computer can perform digital recording in time while receiving the alarm call. The recording time is long (greater than 5000H/80G), the format is compressed, and the search and playback can be performed according to various conditions.
26, can provide various communication interfaces (RS232 / RS485 / RJ45), etc.) connected to the monitoring system computer, open communication protocol, timely transfer the working status information of the emergency telephone system to the monitoring system computer. Remote maintenance is also possible via the internet.
27. It can relate to other highways to form an emergency telephone ETS network management system. The network management center can implement two modes of “monitoring” and “monitoring” for the emergency telephone system of each sub-center to dynamically grasp the operation of the province's emergency telephone.
28. Tunnel broadcasting and tunnel emergency telephones are combined into one, unified control and management, and improved equipment utilization.
29. The various information of the tunnel call extension can be provided in time to be linked with the tunnel camera, and the camera is automatically pointed at the scene when an unexpected event occurs in the tunnel.
30. The tunnel broadcast voice can be pre-recorded and stored in the computer. When necessary, the audio output line of the computer can directly play the recording to the broadcast speaker.
31. The system is inserted into the video monitoring module, and the image of the caller can be seen in the monitoring center console, and the image of the road running in the whole road can also be seen.

2) Main functions of roadside extension/tunnel extension:
1. The emergency telephone user can directly communicate with the operator of the emergency telephone console, and the push-to-talk call (convenient operation)
2. After the user presses the extension button, the extension can automatically place a call to the monitoring center console host and transmit basic information such as the local kilometer number and the uplink and downlink direction.

3. Each emergency phone has a unique address code for uploading to the control center, determining the location of the call and receiving calls and detections.
4. The console attendant can set up a full-duplex call in time after answering.
5. The console can talk to any two emergency telephone extensions at the same time.
6. Can accept the test command issued by the console host, check the extension in time and send the test result to the console host.
7. Any one or more emergency calls that are ineffective or damaged should not affect the calls of other emergency phones to the console.
8. The extension can automatically send a voice prompt when calling, reporting the system working status.
9. Be able to accept various calls from the console host and automatically release the circuit when the console hangs up.
10. The voice is clear when the call is made, the sound is loud, and there is no feedback whistling.
11. When the extension is damaged (for example, the door is illegally opened) or the battery is under voltage, the line is faulty, etc., the extension can automatically send an alarm message to the console host.
12. Can automatically enter the call and standby working state, reducing power consumption.
13. Broadcast power amplifier communication, optional to turn off and off the broadcast power amplifier, and can output audio signals to the broadcast power amplifier.
14. The extension has high-intensity imported reflective film illuminating signs in the direction of the car and the delivery, and the logos and colors conform to the national standards.
15. The main circuit inside the control host of the system adopts the “hot standby” structure design. When the system is normal, the main circuit works. When the main circuit fails, the standby circuit is automatically put into operation. With the backup circuit, the system can provide two connection channels at the same time, ensuring that the console can talk to two different roadside extensions at the same time.
16. This system is equipped with over-voltage protection. The voltage should be monitored automatically after the device is turned on. If the battery is out of power or the voltage is insufficient, the computer in the monitoring center will immediately alarm.
 
3), broadcast system function
1. The extended broadcast function enables broadcast control of the tunnel without adding fiber (using an optical fiber with an emergency call), including single call, slice call, full call, and volume adjustment. And at least two channels can be played simultaneously.
2. Linkage display with monitoring sub-center tunnel monitoring screen

3. The remote telephone automatically directs the broadcast and sets the telephone access port. When the incoming call needs to be broadcast, press the telephone access button to realize the amplified broadcast of the remote telephone, such as the head telephone and the fire alarm.
4. The broadcast power amplifier is set to over-voltage protection. The voltage should be monitored automatically after the device is turned on. If the battery is out of power or the voltage is insufficient, the computer on the monitoring center will immediately alarm.
5. The Center Broadcast Console can make a single, zoned or full power amplifier call for the tunnel amplifier.
6. The central broadcast console can strobe and shut down the tunnel amp. When the broadcast system is turned off, the tunnel extension goes into a power-down state to reduce power consumption and increase service life.
7. The cable broadcast system and the emergency telephone system can work independently. When the control center calls the broadcast, it can also call the emergency call at the same time, and the emergency call can be used to monitor the broadcast effect.
8. The control center can detect the working status of the tunnel amplifier.
9. The broadcasting system is linked with the monitoring system. When there is a sudden incident such as a fire, the broadcast recording can be automatically broadcast to the incident location.
10. The monitoring sub-center control equipment and transmission optical cable are used together with the emergency telephone subsystem to perform full-cast, multicast and selective broadcast, and at least multi-channel audio sources can be played simultaneously.
11. It can be displayed in conjunction with the monitoring sub-center tunnel monitoring screen.
12. With the monitoring function, press the load zone monitor button to monitor the broadcast content of the load zone and have digital recording function.
13. Load monitoring, remote automatic detection of each terminal load, alarm to the host when a fault occurs, and displayed in the monitoring sub-center.
14. Networking function, the system configures the LAN interface to connect with the monitoring computer network, and transmits information such as the opening, closing and failure of the system status to the monitoring computer.
15. Automatic voice alert function, activate automatic voice system for continuous repeat voice broadcast.
16. When a broadcast power amplifier fails, it can report its fault to the control center at the same time for the maintenance of the broadcast system.
17. The power of the broadcasting amplifier can be customized according to the bidding requirements, and the maximum can not exceed 500W.
18. The broadcast power amplifier adopts constant voltage type to ensure long enough communication distance and distortion-free sound quality.
19. Broadcast amplifiers and tunnel speakers have IP65 protection.
20. The equipment in the tunnel should be protected against moisture and corrosion.
 
 
V.: Extension structure, extension working environment
1), extension structure
1. The height of the telephone and receiver from the ground is 145±10cm.

2. The emergency phone has weatherproofed facilities.
3. Emergency telephone extension door lock has anti-theft and rainproof functions.
4. The emergency telephone call column has a rectangular shape.
5. The call key is 150cm ± l0cm from the ground.
6. The call button is installed under the rainproof slot.
7. The extension adopts two types: column type and wall type.
8. The extension door lock should have anti-theft and rainproof functions.
9. The upper part of the outer casing of the telephone should have a reflective reflective sign indicating the emergency telephone in the direction of the car and the delivery. The pattern and color of the sign conform to the requirements of GB5768-1999. The casing has instructions or patterns to make the user understandable.
10. The emergency telephone extension and the upper part of the telephone casing have a prominent telephone number sign
11. The emergency telephone call column has a sturdy casing and a secure mounting to prevent theft or damage.
12. The telephone is split-type, including a microphone, a receiver, an electronic component, a button, and a battery, which are respectively firmly mounted on the upper portion of the call box, and the cable is connected through the end seat at the bottom. It is easy to transport, easy to install, and safe.
2), extension working environment
The talk column should be able to work normally in outdoor temperature environment of -15 ° C ~ +55 ° C
The emergency telephone console should be able to work normally in a temperature range of +5 ° C to +35 ° C
Humidity: 90% (35 ° C)
Waterproof performance: IP55
Emergency telephones should have lightning protection equipment to put high voltage from any accident wave, especially lightning
Sixth, the main technical performance indicators of emergency telephone broadcasting system
Our company's tunnel emergency telephone and broadcasting department passed the product quality inspection of the Traffic Engineering Supervision and Inspection Center of the Ministry of Communications, and has the batch production certificate for traffic engineering products of the Traffic Engineering Supervision and Inspection Center of the Ministry of Communications.
1), the main technical performance indicators of the extension:
Voice band: 300 to 3400 Hz;
Rated sound pressure level strength: ≥95dBA; (measured at 40cm directly in front of the extension)
The operating temperature of the extension: -40 ° C ~ +60 ° C;
Operating humidity of the extension: ≥95% (35 °C);
Nonlinear distortion: ≤ 5%;
Grounding resistance requirements: ≤10Ω;
Working voltage: DC 12V
Current: roadside emergency call ≤ 45mA (standby state)
≤200mA (working status)
IP network interface: 10/100M adaptive.
Mean Time Between Failure (MTBF): ≥100000 hours;
Maximum allowable line attenuation: 30dB (3000Hz)
Protection level: IP65.
Camera: 1 million 1/4" H42 CMOS sensor;
Support 3D noise reduction, digital wide dynamic;
Support ONVIF protocol; access to third-party NVR;
Support web side, CMS, MYEYE platform management software, provide SDK;
Support cloud services, network penetration, and push alarm information to mobile phones;
 
2) Main technical performance indicators of console equipment:
Stand-alone system control capacity: ≥ 1024 extensions
Voice band: 300 to 3400 Hz;

Call link: no blocking (all calls are not blocked)
Call on time: ≤ 6 seconds
Working voltage: AC 220V±10% 50Hz DC -52V±2V
Current: Control center host device ≤400mA
Audio output resistance: 600Ω;
IP network interface: 10/100M adaptive.
Power consumption: ≤500W;
Harmonic distortion: <5% (1kHz);
Recording storage time: ≥2000H
Operating temperature 0°C ~ 35°C (central equipment)
Relative humidity 30% ~ 85% (central equipment)
With test and remote control capabilities.
The two-level system of emergency calls can accept alarms at the same time;
Other technical performance indicators: Meet JT/T8200-93 standard working mode: full duplex, two-way simultaneous alarm;
3), cable broadcasting
Tunnel speaker:
Rated power: 30W, 20W
Single broadcast rated sound pressure level intensity: ≥ 120dBA, (measured at 100cm directly in front of the broadcast);
Sound pressure frequency: >70dB;
Frequency response: 150~8KHz (±1dB);
Protection level: IP55
Broadcast standby power consumption ≤ 5mA, call call power consumption ≤ 2A
Power amplifier
Rated output power: 60W-1500W optional.
Input sensitivity: 1mV ~ 1v, line 25mV ~ 9V
Output voltage: 120V-240V
Signal to noise ratio: 85dB
Frequency response: 150 ~ 8KHz (± 2dB)
Distortion: ≤5% (1000Hz);
Protection level: IP55
Voice band: 300~3400Hz.
Nonlinear distortion: ≤ 5%.
Console signal transmission level: ≥ 0dB.

Broadcast module signal acceptance sensitivity: ≤ -38dB.
Speaker: Strong pointing speaker.

 

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