This case study showcases Mistral’s capability in designing a next-generation wireless video surveillance solution, based on the 802.11n WLAN technology. The solution consists of a wireless IP camera, streaming audio/video data to a Network Video Recorder (NVR). The NVR provides storage and remote accessibility, through a web interface, for the recorded data.
The requirement was to design a wireless video surveillance system based on 802.11n consisting of an IP camera, and a central unit which records the data captured by multiple IP cameras. The cameras need to interact with the central unit, which also has the provision to remotely control the camera by network video recorder. Mistral also had to develop the Video Management Software that had to be integrated with the NVR.
The wireless video surveillance solution designed by Mistral consists of two sub-systems: the wireless IP camera and the Network Video Recorder (NVR). The solution is based on Linux OS.
The wireless IP Camera was based on the i.MX27 processor; with H.264 encoding built-in and 128 MB of LPDDR RAM. The camera uses the 802.11n wireless standard to transfer recorded video and audio streams to the NVR. Wired connectivity to the external world is achieved through USB 2.0, 100 Mbps LAN or Serial UART. The camera also supports video analytics.
The Linux support packages for the camera included additional drivers for the following peripherals, to support the complete operation of the Camera: