Embedded network camera design based on DM365

introduction In many harsh environments such as wild, underground, even in war, people need timely, effective video information, which puts higher requirements for the energy consumption, anti-interference, stability of the system. To apply embedded techniques to video acquisition and transmission to solve a lot of complex environmental issues. The new TMS320DM365 digital media processor based on Da Vinci technology, DM365 is highly integrated, including H.264, MPEG-4, MPEG-2, MJPEG and VC1 codecs that meet the production requirements. The integrated video signal processing (ISP) solution for smart video processing functions, as well as a series of onboards, etc., the developers can reduce system cost by 25%. This article surrounds the DM365 digital media processor, the design of DM365-based embedded video acquisition and transmission system is specifically introduced. 1 Overall structure of embedded video acquisition and transmission system This system uses current advanced WiFi wireless communication technology, combined with the H.264 video compression algorithm to construct a wireless video surveillance system. The system work process is: After the video acquisition node will be collected, the audio data, after the front-end compression, etc., convert into a unified IP packet format, transmitted to the AP in WiFi wireless mode, AP access industrial fiber Ethernet, implementation Wireless connection to existing communication networks, constitutes a sensory mining multimedia digital network. The wireless video surveillance system can be applied to the mine disaster relief emergency communication system, or it can also be used in coal mines such as underground belts, hydraulic brackets, which can greatly improve the energy efficiency of mine safety monitoring systems, saving mine production costs. The wireless video surveillance system diagram is shown in Figure 1. Be Figure 1 System overall architecture 2 system hardware implementation 2.1 System Core Architecture The main function completed by this video acquisition and transmission system is to perform real-time smooth multimedia communication under the coal mine. The general guiding principle of system design is to low power, low cost under the premise of maintaining real-time multimedia communication quality. Node hardware mainly includes: video capture front end, video processing module, wireless transmitting module, and power modules, and some peripheral circuits. The principle of the system is shown in Figure 2. Be Figure 2 Camera principle block diagram, technology area Alexa voice service software extension STM32Cube Combined with DNN API drivers to drive future neural network applications Four integration design for high-end mobile communications and automotive markets A frame capture open source graphic debugger application design The latest security technology that is about to be standard configuration: Rear view camera system