I. Overview

Intelligent traffic is a command platform centred on the three-level management of highway monitoring centre, station monitoring room and toll booth, supported by highway informatization, based on grid-based management, and focusing on the application of public security video monitoring network as the "mass security prevention and control project". It transmits all kinds of traffic information to each driver in a simple and fast way through the construction of the three-level management centre.

Analysis of the current situation

In recent years, as the highway mileage continues to increase, involving the continuous expansion of the region, the motorway's modern network communication system, command and control system and other facilities of the construction has become essential, the construction of a set of perfect, advanced, modern network communication command and control system, high speed all kinds of traffic information in a simple, fast way to each driver is a highway information technology has become the primary task of the construction. The primary task.

Demand Analysis

Alarm help points are set up in highway tunnels/bridges and other areas, so that when the owner encounters an emergency situation or vehicle breakdown during driving, he can quickly call the nearest service area or management centre through the help terminal and get timely guidance and help. Especially in sudden natural disasters and emergencies, high-speed command and control centre can release information in time to organise emergency scheduling of vehicles and personnel to reduce casualties and property losses, and can also be used for high-speed command and control centre and the toll stations (kiosks) between the internal information communication tools to achieve the rapid transmission of internal information and scheduling command in case of emergencies.

Second, the programme design

Intelligent traffic engineering not only to understand the depth of policy guidance, it is more important to solve the problem with a good programme can be landed, a good programme is on the one hand in line with the policy, on the one hand, so that the public benefit from the courage to break the original idea, dare to cross-border integration; do not have to dwell on the continuation of the video surveillance from the video surveillance, or broadcasting systems, intercom system; the current situation needs to be a solution to the needs of the snow bright project system, we want to provide is this landed! We want to provide this can be landed fusion system.

1.Multi-level management

The system is divided into management centre - sub-control centre - secondary sub-control centre - front-end multi-level management.

(1) Management Centre (Highway Monitoring Centre): manages all the equipments, assigns users to give permissions to them, manages audio/video data (alarm audio/video data, start intercom audio/video data, etc.), and provides broadcasting sources and other main functions; as a user at the level of the management centre, he/she can have the highest permissions of the system and can use the full functions of the system.

(2) Sub-control centre (station monitoring room): the sub-control centre manages the equipment within the jurisdiction, the sub-control centre sets the broadcasting source within the jurisdiction, and users at the level of the sub-control centre can use the full functions within the jurisdiction.

(3) Secondary Sub-control Centre (Toll Station Shift Supervisor): The secondary sub-control centre manages the equipment within its jurisdiction, the secondary sub-control centre can set the broadcasting source within its jurisdiction, and users at the level of the secondary sub-control centre can use the full functions within its jurisdiction.

(4) Front-end: Front-end equipment, deployed and deployed according to the actual application scenarios, such as tunnels, emergency lanes, entrances and exits, self-service truck lanes, service area toll plazas, etc., can be installed in accordance with the application needs of the highway and the use of scenarios, the corresponding equipment. The main considerations are network environment, actual demand and coverage; whether there is a visual demand and whether it is combined with broadcasting network.

2. Mobile management (mobile phone APP)

(1) Highway monitoring centre and road administration department can achieve remote inspection and management through mobile phone APP.

(2) During important holidays and special weather, the monitoring centre and road administration department can start remote monitoring at any time for supervision and guidance.

3）Obtain front-end alarm information and start front-end on-site audio and video monitoring.

4）It can inspect the front-end site situation (audio and video and the surrounding environment)

(5) Remote mobile control of the scene of the broadcast, intercom and shouting, disposal

6）Can interact with other hosts on the platform in real time and report information.

3.Emergency broadcasting

Information broadcasting: when a major natural disaster or bad weather, the highway monitoring centre can be advanced management host to the front-end alarm equipment for emergency broadcasting, reminding the driver to travel safely, while the recent impact of traffic travel construction sections for special reminders, timely tips on road information, to facilitate the driver to change the line to avoid causing traffic congestion.

4.One-key alarm

Installation of terminal equipment in the front end on demand, for example, in the toll station or highway accidents or other emergencies, you can start the dual-key, a key to call the command centre, a key linkage 110 centre.

Equipment deployment: visual alarm box, alarm columns can be installed in tunnels, emergency lanes, entrances and exits, self-service truck lanes and other places where you need help, when passing drivers need to help or found on the road car accidents and other critical police can trigger the alarm button can be with the highway monitoring centre for visual intercom, the front-end emergencies occurring in the rapid processing.

5.Streamline video conference

Highway monitoring centre and each toll station can achieve multi-level, cross-regional multi-party video conference through the system's advanced and secondary management host, which is fast, convenient and reduces time cost.

6. Visible & preventable & controllable three-dimensional security prevention and control

(1) Visible - video surveillance, data sharing

Install video surveillance terminals at important points, such as tunnels, emergency lanes, entrances and exits, self-service truck lanes, service area toll plazas, etc., to collect on-site information as evidence for understanding the scene, inspections and case events; important videos can be stored on demand - terminal storage, central storage, network centralised storage (NVR storage). The stored data can be provided to other departments for sharing (e.g. smart city, public security, road administration, etc.).

2) Preventable - voice broadcasting

In order to avoid causing serious traffic congestion, the system can be embedded through the terminal broadcast function, the recent impact of traffic on the construction of a total section of the road for the special body to wake up; to facilitate the driver to choose the best travel route in time.

3）Controllable - alarm linkage & video linkage & electronic map

When there is alarm information occurs, according to the setting beforehand, the alarm information can be linked to different management hosts at all levels of the centre, will automatically pop-up alarm information screen; all levels of the centre receives the alarm at the first time, through the electronic map positioning can be fast, timely and accurate reminder of the duty personnel which area of the police, to facilitate the high-speed monitoring centre to make arrangements for the disposal of more quickly. Start two-way visual voice intercom, play emergency, rescue broadcast; notify the relevant linkage departments (emergency office, 110 centre, etc.); quickly set up a temporary simple video conference, multi-departmental consultations.

7. Local guarding of equipment and system cycle monitoring function

Alarm terminal built-in SD card function, even in the absence of a server, as long as the power supply can be connected to open the recording video in accordance with the set recording time, to protect the integrity of the data; when the equipment fails, the centre can identify the state of the equipment, to remind the management personnel in a timely manner on the equipment to repair.

Third, the technical characteristics

1. Extensibility, compatibility and integration capabilities

(1) Support standard protocols such as onvif protocol, SIP protocol, GB28181 protocol, provide standard interfaces to facilitate data sharing between platform subsystems.

(2) It can separately access VOIP telephone system (support mainstream IP-PBX), and can realise audio and video calls with IP visual phone. Can integrate access control system, video surveillance system, alarm system, etc. in the project;

(3) Break through the traditional broadcasting and intercom system cut off and closed drawbacks, to achieve cross-system linkage, including video and broadcasting linkage, remote control access control, remote control of light switches and so on.

2. All-round information source acquisition and linkage capability

Omni-directional information collection, including voice information, video information, alarm information, intercom information; the system intelligently analyses the collected information, and according to the pre-set threshold, it can be linked to emergency broadcasting, notify the protection force, start alarm prompts, linkage audio, video, sound and light switches; so that the administrator has a comprehensive understanding of the state of affairs in the first time, the disposal force responds in a timely manner, and the person who seeks help in the first time to get full assistance.

3.High voice sampling rate

Voice: support PCM, AAC, G711 audio coding format; voice files support MP3, WAV and other file formats; support for 8K-48K sampling rate, 32K-768K code rate file playback makes the broadcasting sound quality more clear; all terminal equipment are hardware echo cancellation of audio processing technology, which can be very good at offsetting echoes and suppressing noise. Breakthrough in voice, support system applied to full dual-video voice calls, multi-party visual conferencing; the system encrypts the voice code to prevent eavesdropping.

4. Support starlight level function and HD video resolution

Video: video support H.264, H.265 coding format, support for CIF, D1, 720P, 1080P multiple resolutions; support for starlight level night vision and wide dynamic, strong light suppression, low-light compensation function, in the night and backlight can be clearly discerned faces; support for real-time screen time and title overlay settings, can be superimposed on the screen, video resolution, bit rate, time, title content etc.

5.Multi-alarm source acquisition and linkage capability

Alarm: receive terminal alarms, support motion detection alarms, IO triggered alarms, and support intelligent analysis of threshold alarms (such as noise threshold), starlight camera night identification monitoring alarms; with alarm display, recording, recording and other functions; can be set up to send the alarm to the 110 command centre; the system is based on network operation.

6. Full two-way visual intercom

Visual intercom: the system provides one-key call function; after the call is connected, it immediately realises full two-way video call in a hands-free way and brings back the function of sound elimination. Specific practical functions

(1) Listening and interrupting: high-level users can listen and interrupt the low-level users in the call.

(2) multi-party conference mode: support multi-party visual conference, between the application host and the host.

(3) Hosting mode: When the staff of the regional host leaves or disconnects from the network, the system will automatically host its management to other hosts for management, effectively preventing host abnormalities and no one to answer the police

(4) Call transfer function: it can be set as occupied line transfer, dropped line transfer, no response transfer, transfer by time slot, etc.

(5) status monitoring: intercom management host screen intuitively display the real-time status of the terminal, the working state, convenient debugging, overhaul and maintenance; each key can be added to describe the location of the outlet information, easy to manage and operate.

7. Various broadcasting applications

Network broadcasting: support UDP, TCP, multicast three broadcast transmission protocols, can be set up for different scenarios of different broadcast transmission methods. Through broadcasting to strengthen security education, propaganda security knowledge, warning of predicted insecurity factors, play a preventive role, effectively reduce the probability of danger; support a variety of broadcasting applications, including

1）Area-wide broadcasting: it can broadcast to the audio file, shouting, and external audio source within the whole precinct.

(2) partition broadcasting: audio files, shouting in the sub-district broadcasting

3）Timed broadcasting: set the broadcasting time according to the system, and play automatically when the time comes.

(4) Fire broadcasting: when fire alarm occurs, play special recorded fire audio files, and the broadcast automatically cut to the maximum volume.

8. Cross-system integration and system integration capability

Integration capability: cross-system integration with video surveillance system, access control system, snow bright project platform, safe city platform, smart community platform, smart city platform.

System integration: Integrate alarm, broadcast, intercom and video systems to achieve sound linked video, video linked sound, alarm linked video, alarm control sound and light switch, video linked broadcast function.

9.Storage function

(1) Local storage and network storage mode: support terminal local storage and network storage, local and network storage policy (storage mode, storage time, storage conditions, etc.) can be configured in the system platform according to actual needs. All terminals support local storage of audio and video files on SD card and network centre storage, and support NVR storage function of mainstream manufacturers, and intercom terminals can store audio and video data directly in NVR of mainstream manufacturers such as Hikvision, Dahua, Kodak and Yushu.

(2) storage strategy: full-time or timed storage can be achieved

(3) Storage of practical details: audio and video storage at the same time; support for alarm picture capture function, can capture the alarm time period of 1-60 seconds of the screen picture and storage. The audio and video recordings of all terminals are centrally stored in the management server, and the audio and video recordings of the intercom terminals and the audio recordings of the management centre are combined into one MP4 file for storage, which can be retrieved at any time by the users using the call workstation or the PC client.

10.Management Capability

The system adopts the management mode of "multi-level sub-control management and unified command", which is convenient for multi-level units to perform their respective duties. The system has a three-level management mode of terminal-sub-control centre-command centre. Among them, the command centre sets up a first-level server, and each sub-control centre sets up a second-level server. Both the first-level server and the second-level server are equipped with the function of managing the intercom terminals under their jurisdiction, ensuring that any single-point failure does not affect the operation of the whole system, including the intercom terminals managed by the faulty servers. All equipment terminals are registered on the cloud platform, which is convenient and fast.

11. Convenience of use

One end to control the whole situation, the user in a client, you can control all the front-end of the system, the practical value and user experience is greatly enhanced; command centre, sub-control centre can be point-to-point, partition or all the equipment call, broadcast; mobile APP users can log in to the platform as long as the remote visual intercom, remote broadcasting, remote music playback and other control.