I. Introduction to the programme

Snow project not only to understand the depth of policy guidance, it is more important to solve the problem with a good programme that can be landed, a good programme is on the one hand in line with the policy, on the one hand, so that the masses can benefit, dare 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 system, intercom system; the times need to solve the needs of the snow project system, we are going to provide is this landable Integration system.

Second, the programme design

Snow bright project fusion programme is to solve the new situation of law and order problems explored breakthrough results, the fusion programme will be the previous video surveillance, security alarms, emergency broadcasting and disposal, early warning and prevention of the problem as a package solution.

1.Multi-level management

The system is divided into management centre - sub-control centre - secondary sub-control centre - front-end or county, township, village multi-level management.

(1) management centre (comprehensive control centre): manage all the equipment, assign users to give them permissions, manage audio and video data (alarm audio and video data, start intercom audio and video data, etc.), provide broadcasting sources and other major functions; as a management centre level users can have the highest system permissions, can use the full range of system functions.

(2) Control Centre (Township Comprehensive Treatment Station): The sub-control centre manages the equipment within the jurisdiction, the sub-control centre sets the broadcasting source within the jurisdiction, and the user at the level of sub-control centre can use the full functions within the jurisdiction. Sub-control centre can be configured with recording system to store audio information for a long time and in large quantities, and can also provide audio resources to be shared to the smart city, public security, government emergency office, hospitals, urban management, highways, civil affairs and other uses; sub-control centre can be configured with NVR network storage equipment to save audio and video data, and provide it to the smart city and other uses.

(3) Level 2 Sub-control Centre (Village Duty Room): Level 2 Sub-control Centre manages the equipment within the jurisdiction; Level 2 Sub-control Centre can set up the broadcasting source within the jurisdiction; Level 2 Sub-control Centre level users can use the full functions within the jurisdiction. The secondary sub-control centre can configure telephone gateway (SIP gateway) according to the actual need to achieve horizontal linkage with other departments, such as public security, government emergency office, hospitals, urban management, road administration, civil affairs and other important departments.

(4) Front-end: front-end equipment, deployed on demand, mainly considering the network environment, actual demand and coverage; whether there is a visual demand, whether to combine with the broadcast network.

2.Mobile Management (Mobile APP):

Leaders and managers can achieve mobile management at all levels through mobile phone APP.

(1) Get front-end alarm information, start front-end site audio and video monitoring

(2) Can inspect the front-end site situation (audio and video and the surrounding environment)

3）Can remotely control the broadcasting, intercom and shouting at the scene and dispose of it.

(4) can be with the platform of other hosts for real-time action and information reporting

3. Early warning function

Early warning prevention: to avoid the loss and injury caused by the occurrence of the case, to strengthen the early warning prevention is more important. This system provides knowledge in the normal situation, through the terminal broadcasting equipment, broadcasting safety precautionary knowledge, fire prevention knowledge, safe travel reminders, abnormal weather reminders to play a security early warning precautionary role; in the absence of a case, through the terminal equipment intelligent identification (noise alarm, intelligent voice analysis) function, to achieve the unmanned (night time, remote road), a little monitoring of abnormal sound (such as too large, shouting.) Automatic alarm to the precincts, the police will be informed of the incident, help) automatically alarm to the jurisdiction (grid) management host, the system will automatically play dispersal, warning broadcast, the responsible person can get alarm information in time, and this screening, disposal.

4. One-key alarm

On-demand installation of terminal equipment in the front end - network environment, the important points to install visual intercom alarm terminal; in poor network conditions, inconvenience (voice intercom alarm, two-way voice alarm) location, the installation of voice visual intercom equipment; each device has both a key alarm button, available to the masses, the masses in the request for help, found fighting, When the public seeks help, finds fights, brawls, disasters, dangerous situations, personal safety threats, the alarm terminal equipment can be alarmed to the duty room of the secondary platform management host; can be provided according to the needs of other departments to share information, such as through the terminal on the double button, can be linked to the 110 centre with one key.

Equipment deployment: visual alarm terminal can be wall-mounted in the streets, gardens, remote alleys, squares and other places needing help intercom on the walls or poles for the masses to use, the masses in need of help or find fights, brawls, or other dangerous alarms can be triggered to trigger the alarm button can be with the command centre for visual intercom on the front-end emergencies occurring in a rapid manner, to achieve the effect of preventing the occurrence of the incident.

5.Fire alarm

In case of fire and other emergencies, the system automatically cuts the broadcasting sound to the maximum volume and plays the emergency fire broadcasting with the highest authority.

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

(1) Visible - video monitoring, data sharing

Install video surveillance terminals at important points, such as key intersections, squares, districts and other places with good network environment, to collect on-site information as evidence for understanding the scene, inspections and cases; important videos can be stored on demand - terminal storage, central storage, network centralised storage (NVR storage); stored data can be made available for sharing by other departments (e.g. smart city, public security, etc.). departments to share (such as smart city, public security, government emergency response office and other departments).

(2) can prevent - knowledge propaganda, intelligent guarding, voice broadcasting

In the past to improve security prevention and control capabilities rely on video surveillance singing a one-man show, because the video surveillance system does not provide the appropriate channels for the public to carry out related security prevention and control knowledge propaganda, so we naturally ignore the role of early warning prevention. This system through the terminal embedded broadcasting function, the masses of publicity and education; through the intelligent pick-up function to achieve intelligent guarding; the dangerous environment, the situation of intelligent voice broadcasting (such as identification of life-saving words and other information, the system automatically broadcast repellent, persuasion, order and other voice).

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

When alarm information occurs, according to the prior setup, the alarm information can be linked to different management hosts at all levels of the centre, and the alarm information screen will pop up automatically; all levels of the centre will receive the alarm at the first time, and through the electronic map positioning, it can quickly, timely and accurately remind the duty personnel of which area is in danger of the police, so as to facilitate the duty personnel to make disposal arrangements 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 the set video recording time to open the recording video, to protect the integrity of the data; when the equipment failure, the centre can identify the state of the equipment, to remind the management staff to repair the equipment in a timely manner.

Third, the technical characteristics

1. Extensibility, compatibility and integration capabilities

Support standard protocols such as onvif protocol, SIP protocol, GB28181 protocol, providing standard interfaces to facilitate data sharing between platform subsystems.

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

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 of 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 prevention knowledge, warning of predicted unsafe factors, play a preventive role, effectively reduce the probability of danger; support a variety of broadcasting applications, including the following:

(1) Area-wide broadcasting, can be broadcast to the audio file, shouting, external audio source in the entire precinct.

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

3）Timed broadcasting, according to the system to set the broadcasting time, when the automatic broadcasting

3）Timed broadcasting, according to the system to set the broadcasting time, when the automatic playback

8. Cross-system integration and system integration capability

(1) 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.

(2) System integration: Integrate alarm, broadcast, intercom, and video systems to achieve sound-linked video, video-linked sound, alarm-linked video, alarm-controlled sound and light switches, and video-linked broadcast functions.

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 realised.

(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 files of the management centre are combined into one MP4 file for storage, which can be accessed at any time by the users using the call workstation or 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.