July 2013


New Taipei City, Taiwan, planned to upgrade its inner city surveillance system to provide safety and security for its population of 3.9 million in 29 districts.  The project would include upgrading to megapixel solutions that can be fully integrated with the control center, branches, sub-station junctions and the existing IT infrastructure.


The widely distributed network areas, scalable architecture and maintenance issues were the challenges SI first faced in this project. The heat, humidity, and temperature changes in the outdoor environment were also obstacles to overcome. In addition, the limited and unstable public ADSL bandwidth for data transmission, the data retention of recorded video, and the extremely complicated integration and verification tasks for megapixel surveillance not only consume project managers many invisible resources, but also contain potential risks of integration.
Table 1: The I/O and Storage Performance for 32 Cameras

Type Resolution I/O (Mbps) Storage 14 Days Storage 28 Days
CIF 320x240 0.5 2.4 TB 5.2 TB
D1 720x480 1.5 7.3 TB 15.5 TB
1.3 Megapixel 1280x960 4 19.4 TB 41.5 TB
2 Megapixel 1920x1080 6 29 TB 62.2 TB
3 Megapixel 2048x1536 6 29 TB 62.2 TB


Built-in with the advanced ISP, Surveon CAM2311 offers WDR, HLC, 3D noise reduction, and defog functions.  With good low light performance, the CAM2311 is the ideal choice for professional outdoor surveillance projects.  All of Surveon megapixel cameras are with industrial-grade components, in-house design and 3-year warranty to ensure product reliability for long-term operations.


To compensate the limited bandwidth of the public ADSL, Surveon cameras are equipped with the SD slot and the offline recording capability which can automatically store the video to the SD card during downtime.  When the network is recovered, the video is resent to the NVR.  In addition, the balance of bandwidth between live view and offline video resending can be managed with network bandwidth control.


With hundreds of channels, recording performance and reliability are the main challenges for megapixel projects.  Surveon NVR series offers two solutions: iSCSI and DAS systems.  With this high performance combination, maximum 64 channels and 1920 FPS can be achieved.


“There are many aspects for consideration in a megapixel project, including integration of cameras, VMS, servers and storage and high risks,” said Vincent Hsu of TDI-Megasys, surveillance project manager of New Taipei City.  “A 5% failure in any aspect would result in a 20% failure rate in the whole system.  Surveon is one of the few manufacturers bringing truly end-to-end proven solutions with in-house design and manufacturing to ensure that the system from hundreds of cameras to hundreds of TB storage is fully integrated, stable and can be easily managed.”


For more information, please go to www.surveon.com