Alarm Monitoring System in a Residential Area
1. Project brief introduction
This "Residential area" places thousands of square meters, aims to set up big mature and high greening residential buildings, predict to build residential buildings and public buildings, including 1 kindergarten and 1 big parking lot, total construction area being up to thousands of square meters.To prevent thief, rob and destroy suchlike crimes and to ensure human & property security as well as to manage property easily, now the bid for this area monitoring begins.
This security project totally assign 16 monitoring points, monitoring zone covers surrounding wall, main roads, entrance & exit, parking lot, bicycle shed and kindergarten, meantime around wall installs IR photoelectric beam detector, forming "electronic wall"; working with video monitoring system in evening alarm detection can effectively solve undesirability at night and enhance reliability.
2. Design reference
Due to outside area spaciousness, especially northern zone (a wasted airport); besides no lightness around area in the evening, therefore criminals have chance to intrude into residential area, threatening human & property safety.In such conditions, user claims demand for residential safety monitoring system construction----install 16 cameras at walls, entrance & exit, main roads, parking lot and kindergarten, especially the wall that is important zone of precaution demands dual protections of alarm detection and video monitoring.
Through installing video monitoring system and alarm detecting system can set up an expandable, upgradeable and manageable platform, realizing centralized monitoring and digitalized management, enhancing life quality and ensuring human body & property safety.
A complete residential monitoring system is the perfect integration of video monitoring and alarm monitoring. How to make two systems maximally work together is the important index of measuring system perfection, advancement and reliability, also is the vital point of measuring system performance. Therefore, based on many years industrial experience and our product's strong functions, we think that designment should meet below demands:
System can long term continuously work stably: ensuring real-time ability and reliability
Perfect equipment: fitting complex whether conditions
Scientific and reasonable designment: easy to install
Advanced and perfect equipments: meeting practical requirements
No interference among signals and no fading in long term using
Friendly interface: easy to operate & maintain, customizing available
Sensitive alarm detecting, high transmission ability of alarm signal; clear picture, no delay or shake
System is perfectly compatible, expandable and upgradeable.
Connect with other monitoring systems, and forms united digital network of monitoring
3. System designment
3.1 Front-end equipments arrangementFront-end equipments play an indispensable role in whole system, including front-end camera and front-end detector
3.1.1 Front-end camera arrangement
Front-end camera is main capturing device, featuring from 3 aspects: onsite monitoring function, picture recheck function (working with alarm system). Cameras are mostly installed at outdoor "important monitoring zones" and vital departments. These cameras real time monitor onsite situation, instantly finds hazard, illegal action and public security, early solving problems. In light of above, important objects and important zones (small scope) should install fixed camera, like entrance & exit; large scope zones, like wall surrounding, main road and parking lot, should install PTZ cameras.
Arrangement details:
No |
Installation Position | Monitoring Position | Quantity |
| 1 | Western wall | Mainly view western wall and part southern wall, help view inner residential area | 2 speed domes |
| 2 | Northern wall | Mainly view northern wall and part eastern wall, help view inner residential area | 4 speed domes |
| 3 | Eastern wall | Mainly view eastern wall, help view inner residential area | 2 speed domes |
| 4 | T-junction | Mainly view human activities and vehicle motions going through main road | 1 constant speed dome |
| 5 | Lawn | Mainly view part southern wall and human & vehicle activities going through main road | 1 constant speed dome |
| 6 | Inside parking lot | Mainly view vehicle parking & passing, help monitor part southern wall eastern wall | 1 constant speed dome |
| 7 | Gate of parking lot | Mainly view human and vehicle passing | 1 fixed camera |
| 8 | Bicycle shed | Mainly view vehicle parking & passing | 1 fixed camera |
| 9 | Kindergarten | Mainly view children activities and sending & receiving procedures | 2 fixed cameras |
| 10 | Area gate | Mainly view human & vehicle passing | 1 fixed camera |
| Total | Install 8 speed domes, 3 constant speed domes, 5 fixed cameras; total camera channels are 16 | ||
Same to camera, front-end detector, as the alarm detecting device, plays an indispensable role. In this solution, the wall is important point in whole system. Just using camera can not get ideal safety; the reason is that evening is so insufficient in brightness that it greatly reduces picture clarity & definition. Moreover, in light of video monitoring needing human eyes, but person eyes & attention become dull in the evening, so some security hazards caused by carelessness are hard to avoid.
To make up monitoring weakness at dark environment, we install IR photoelectric beam detector, using multi-beam to form an invisible "electronic wall" in the evening. Once intruder breaks in, detector will activate instantly and send alarm signal to control center, open flashlight for warning, so as to enhance security index and make up shortcoming of evening monitoring. Detector setting details:
| Numbers | Position | Coverage | Quantity |
| 1 | West wall | West wall zone | 2 pairs of 150M detector |
| 2 | North wall | North wall zone | 3 pairs of 150M detector |
| 3 | East wall | East wall zone | 3 pairs of 150M detector |
| 4 | South wall with irregular sections | South wall zone | 2 pairs of 100M detector, 1 pair of 60M detector, 2 pairs of 80M detector, 1 pair of 150M detector |
| Total | 14 pairs of detector |
This project is designed according to that DVR monitoring system is regarded as main control system. DVR system means a system that uses hard disk for recording, integrating highly with multi-picture operation, PTZ control, recording search, networking transmission and alarm linkage. It bases DVR (digital video recorder), adds control function, alarm signal processing function and networking transmission function to front-end equipments, so as to form a complete alarm monitoring system. Picture recording part adopts digital video compression skill, suing hard disk to make recording, playback, search and management more convenient, so it gradually becomes main trend of monitoring system.
Compared with traditional analog monitoring system, it has more features and advantages:
Highly integrated function; integrate video monitoring and alarm detecting, simplify system devices, make easier to maintain system.
Simpler & more visible operation; more friendly & humanized interface
Large recording space: convenient search, easier to save
Realize network transmission and system connecting; more clear picture
Higher safety; strict input safety measures and watermark, prevent files from being modified illegally.
4. System function
To make user easier to understand system function, introduce various functions according to different environments & special functions
4.1 Control center functions
Main control room is the center for signal control & information exchange, with fullest system functions, main include below points:
Real-time display any channel or channels video & audio information so as to real-time monitoring
Set any channel's display effect and recording speed to get optimal effect
Record & save signals of some channel or channels with many modes
Backup & play important data
Search & playback data with multiple modes
Freely control front-end pan/tilt and lens, select best angle and distance to monitor onsite situation
Strong networking transmission function can send each channel signal to WAN, realizing network monitoring
Strong & compete alarm linkage function (details in below parts)
Able to expand TV-wall in control center, so as to enhancing display effect (cost high and not recommended)
Via digital control server, upload signal to the Internet, realizing remote monitoring
More functional introductions please refer to the content about DVR
4.2 Alarm linkage function realization (important)
Here what needs stressing is the alarm linkage function of this system. As early as designment beginning, the wall has been regarded most important part. Since the most effective method to enhance wall precaution is install video monitoring & alarm detecting equipment, so how to realize two systems integration, i.e. alarm linkage function, for finishing quick policing, accurate judgment and effective warning suchlike linkage reaction are the core of this solution. Function details:
When intruder at night breaks in illegally, alarm detector will firstly activated, then signal is sent to control center, open flashlight for warning
Meanwhile DVR server auto pops up electronic map with alarmed direction
DVR server instantly auto opens emergency light for camera and manager to view event procedure. This function realization greatly widens reacted range of alarm, avoids no warning appearance as watch keeper leaves away. This is a noticeable feature of networking development of monitoring skill.
Besides, for the cameras installed in daily important positions, system can set their motion detective alarm functions at DVR server. When picture appears illegal motion, system will auto alarm, open recording and find event instantly for later use.
4.3 Other sub-controllers functions
Via network, at any time, view all points' pictures
Via network sub-control software, remotely monitor all pan/tilts and lenses, overcoming regional restriction
5. Front-end equipments selection
5.1 Front-end equipmentsCamera's selection should comply with practical situation, i.e. for wall-mount camera, it is recommended to use high speed dome camera BN-5606XH3 (SONY chip 480), in order to work with alarm detecting system to realize alarm preset function. <High speed dome introduction>
5.1.2. As to the cameras installed in parking site and residential road suchlike areas, it is recommended to using outdoor wall mount / pendant mount low speed dome camera BN-5606HL3. <Constant speed dome introduction>
5.1.3. As to outdoor fixed cameras, in light of poor luminance, it is recommended to using IR night vision camera BN-1350D. <IR night vision camera introduction>
5.1.4. Photoelectric beam detector (omitted)
5.2 Transmission devices
Transmission system affords for sending of video signal and control signal. According to design requirement, video signal must be sent through cable SYV75-5-2 of blocking 96% interference or specified cable for SYV5-5-2
System video input & output resistance and video cable resistance must be same as 75Ω
Multi-conductor twisted pair transmits alarm and control signal
Multi-conductor sheathed wire transmits power for device
5.3 Recording equipments
This solution adopts IDRS-7016HE-D DVR. IDRS-7000S series DVR uses newest H.264 skill, which makes each channel recording speed reach maximum (25f/s), with more compact compression, less HD space, faster transmitting and more definition. System functions are more flexible; operation interface is more clean & humanizing; network transmission and sub-control software are more perfect. All in all, it meets current demands on remote monitoring, has becoming typical series products.
IDRS-7000S series DVR is one of the Backbone core-products. In continuous development & improvement, this series product has been applied for our IDRS platform solutions. IDRS platform solution supplies more flexible system interface & port, allowing users at same time using IDRS series DVR, net video server and EM-DVR suchlike equipments, even centrally display, manage and control. (Details in http://www.chinasecuritysystem.com)
6. Equipments list (omitted)
7. System diagram
