| This paper from the video monitoring system of network mode were further research, and according to the specific circumstances of mobile base, puts forward the advanced network scheme. The traditional network mode, consider the cost problem, most of the way to networking by Bridges, this networked way, transmission belt size, equipment stability is poor, take a lot of the innings, aiming at physical space of popular network mode are analyzed in detail, combined with the advantages of Ethernet and GPON improvement of networking methods, and puts forward a suitable for China mobile base station of a network mode. This networked way has the bandwidth (100 MB above), equipment stability, low cost, solve the characteristics such as low bandwidth with traditional network mode, the equipment is not stable problem, can in monitoring terminal in ensuring the effective monitoring stations in various environmental conditions and alarm.Front-end signal acquisition includes cameras, cloud mirror control system, video server, and related security sensors, such as infrared detector, gate magnetism, smoke perceptron, sound collection (high sensitive microphone), alarm and the speaker system, access control system, etc. One security sensors and voice video server unified access collected player. The video and alarm signal front transferred by transmission network monitoring center unified handling. One video signal has intelligent processing. According to the specific circumstances of our base station, at ordinary times the stillness of the screen, so the program of most intelligent static picture add judgement, video camera recorded only images of such activities greatly reduce the hard disk resources of the occupier, increase the hard disk can record time. The monitoring center received the smoke or sound base in time after such alarm warning, inform the related personnel for processing. And the speaker, by on base station to deter criminals, avoid loss of property.Second, through the phone a client of video compression algorithm JAVA software (h.264) had a lot of programming experiments, the various phone models (including DuoPuDa T8388, samsung 18180, connaught giacomo 6788) underwent programming test in different parts of the network environment observe its performance. Experimental results show that our algorithm of compressed video could utilize bandwidth, ensure smooth picture, and can achieve stability, easy maintenance, and smaller mobile phone memory resources occupied. Finally, we built the experimental environment, put ideas all together, achieved through TD phones to monitor the function of machine room and base station environment, and reached the fluent and clear picture of degree. In the mobile signal enough, the network quality of good places, cellphones can realize 15 frame/s viewing rate, watch is fluent, image is clear. Supports full screen looked, support yuntai rotation and zoom control. Generally speaking, mobile phone, viewing the faster the better quality. The network computer, laptop or handheld PC watch 20 frame/s, the effect is clearly fluent. Local watch 25 frame/s. Fully achieve purpose. Generally speaking, mobile performance is better, the better the results; Td-scdma network than the EDGE/GPRS obvious fluent many.The work of this paper to base station maintenance monitoring, it is of great significance to the superior performance, low cost, easy to use, can deploy sex is strong, in the environmental monitoring and base security monitoring plays a very important role. Not only such, this system can be applied in transformation, slightly group clients in industrial application. We understand that video monitoring group has a lot of potential client demand to China mobile, it sure is a fully staffed group application solutions. |
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