I. system introduction


System USES hua an independent intellectual property rights of digital audio codec technology, hua an automotive dynamic forensics host as the core, at the same time, combined with advanced audio and video codec technology, GPS satellite positioning, 3 g wireless network transmission, night lighting, video technology, such as intelligence to shake formed an advanced vehicle dynamic forensics system. The system fully meets the requirements of all-weather law enforcement and evidence collection under various driving conditions.


Solo forensics system of existing urban security monitoring and control system of a kind of flexibility, mobility, by improving the law enforcement personnel of technology and equipment, real-time record, a line of tipstaffs using wireless transmission network (3 g/WIFI, etc.), the audio and video image real-time transmission to the monitoring center, combined with GIS/GPS system, realize the unified management and control.




System introduction


2. System functions


Video and audio codec: using the internationally advanced video and audio codec technology independently developed by hua 'an, the analog video and audio data collected can be encoded with high efficiency, flexible encoding method and strong network adaptability.


Video storage: the host can synchronize and compress the real-time video and audio signal to local storage, which can be used for event playback, data backup and data upload.


Local display: the hd LCD screen inside the car displays local image preview, event playback, system operation, system setting, system information and operation help.


GPS positioning: the system is equipped with a GPS positioning module. When the satellite signal is received, the geographic information and driving speed of the vehicle can be displayed on the preview screen in real time. Relevant data can also be stored in the video data. At the same time, it has the function of GPS satellite timing, which supports 24 time zones around the world. It can be automatically calibrated every 5 minutes to ensure the accuracy of the forensics time.


Night light supplement: the system adopts infrared or white light supplement technology, which can adapt to the reflective coating of different license plates, so as to realize the forensics shooting under the condition of poor night or light environment and meet the requirements of all-weather law enforcement and evidence collection.


Smart to tremble: vehicle, yuntai camera images will appear dithering phenomenon, to shake algorithm, through intelligent system according to GPS real-time speed information automatically to video preview picture adjustment and dynamic processing to eliminate or reduce the image dithering, make personnel on duty in the driving environment visual feels comfortable when you watch the monitor screen.


Digital Watermark: the use of digital Watermark technology to add hidden marks in the process of encoding evidence collection data can prevent the malicious tampering of evidence collection video data and ensure the security and credibility of evidence materials.


Storage management: support the use of dual hard disk storage mode, starting up by default, recording in hard disk 1. When the event occurs, press the recording button of the underhand controller, and the device will mirror the recording in hard disk 2. At the same time, signals will be sent to the platform.


Wireless network transmission: the system can support unicom 3G (WCDMA/CDMA 2000/ td-cdma, etc.) networks and WLAN (wireless LAN) to transmit various data information such as video and audio signals, realizing remote centralized management and unified scheduling.


Remote monitoring: through wireless network, the back-end management command center can conduct real-time command and scheduling of vehicles on the management platform and remote monitoring client, as well as preview, playback and download video materials remotely.


Mobile phone monitoring: mobile phone monitoring mainly makes use of mobile terminal mobility, which can preview the picture anytime and anywhere, so as to realize the mobility of law enforcement command.