Solution of digital interrogation system of qituo
Scenario background
Interrogation is an indispensable part in case detection, but the traditional interrogation monitoring system mainly uses analog signal transmission and control equipment. There are many analog system equipment, the quality of remote image transmission is poor, and the interaction between remote control and remote command is not easy to achieve. In addition, there are many problems, such as difficult data storage, inconvenient data retrieval, two-way interactive remote control function Strong, interrogation materials (audio and video, file data) access difficulties and other defects.
Therefore, how to realize the digital preservation and transmission of interrogation images and sound signals, and how to use computer network technology to strengthen the command linkage function in the interrogation process, so as to standardize the interrogation process and speed up the evidence collection has become imperative.
Outline of the plan
Combined with the problems existing in the interrogation process of the current public security judicial system, such as: multi-level and multi-level linkage of the remote interrogation room in the command center, comprehensive management of the high-definition interrogation room, storage and access of audio and video materials, authority management and control, interface with case handling and video conference system, etc., Kai Tuo Electronic Equipment Co., Ltd. launched in-depth research, relying on constantly innovative ideas and rich Through strengthening the application of digital network technology, the public security system can realize the standardization, digitalization, modernization construction and management of the interrogation room, and effectively supervise and manage the interrogation and interrogation process of high-definition interrogation by using digital network The guiding ideology of prosecution should improve the efficiency of investigation and co investigation, and strengthen the authenticity and effectiveness of the process of case handling and evidence collection.
Scheme idea
Qituo digital interrogation system adopts the latest digital network technology, the whole interrogation system adopts the network cable connection, and adopts the pure digital audio transmission; and breaks through the traditional technology, the traditional analog equipment can also be connected to the whole system, barrier free operation; in the whole system, through the unique digital video sound card, the voice transcription can be completed in real time in the interrogation process, so that the voice can be achieved The video data can be recorded and stored in real time, which is convenient for recording, filing, consulting, and playback of linked video files; the whole system completes the unified control of servers, monitoring (commanding) microphones, speakers, power amplifiers, high fidelity pickups, embedded video cards, HD panoramic cameras, digital HD interrogation terminals and other equipment in interrogation room through digital switches To realize the multi-level and multi-level linkage and remote command and control of the interrogation room, to achieve the interconnection effect of the whole system, so as to improve the transmission speed of interrogation information and the efficiency of handling cases.
Scheme characteristics
Compared with the solution of traditional interrogation system, qituo digital interrogation system has the following remarkable characteristics: Networking: the system has strong network function, which can meet the transmission requirements of LAN and private network, and the relevant personnel can carry out two-way voice (text) communication through the network, realize remote access, remote command and other functions
Digitalization: the transmission and storage of audio signals in the whole interrogation process are digitalized, the evidence is easy to archive and easy to read
Interconnection and interworking: the system can realize multi-level linkage, cross examination and other functions of multi meetings, and realize interconnection and interworking of equipment
Security and reliability: the system server adopts the "double backup" function to ensure the reliable and stable operation of the system; encryption technology and authority setting are adopted to prevent illegal viewing and modification of evidence and ensure the objectivity, security and reliability of interrogation data
Industrialization: the development of the whole system is in line with the trial process and procedures of the judicial department after in-depth investigation and multi-party experiments
System composition and topology
Qituo digital interrogation system is divided into two parts: interrogation room system and command (control) system.
Interrogation room system
Interrogation room system equipment mainly includes digital audio sound card, embedded video card, monitoring microphone, Ceiling Speaker, high fidelity pickup, switch, voice conversion text client and other equipment.
Command (control) room system
Interrogation room system equipment includes main (backup) server, digital audio sound card, intercommunication digital audio device, voice conversion text server, switch, power amplifier, command microphone, speaker and other equipment.
Digital interrogation command (control) system
System topology
The system is divided into several interrogation rooms and command system. All the equipment form a local area network through the exchange to realize the interconnection of the whole system.
System function analysis
Independent trial:
In the system, panoramic cameras are used in each sub interrogation room to reflect the panoramic view of the interrogation room, collect data information of relevant personnel, transmit relevant data to the sub exchange and monitor of the interrogation room through embedded video card, collect sound information through monitoring microphones, hi fi pickups and other source equipment, and convert it into text information in real time through digital audio sound card for later distribution Class file and reference. In the whole interrogation process, all interrogation signals are collected to the system main switch through the interrogation room branch switch to realize backup and storage.
Cross Trial:
Each sub interrogation room in the system is connected to the local area network through a switch, and any interrogation room in the local area network can access and watch the real-time interrogation picture of any interrogation room, so as to realize cross interrogation, collaborative interrogation, joint interrogation and comparative interrogation of multiple interrogation rooms.
Remote interrogation:
In the system, the command center can watch each sub interrogation process through video decoder, and conduct remote command, remote monitoring and remote guidance voice guidance for multiple interrogation processes in multiple interrogation rooms (the conversation content can realize real-time transcription of voice and text) to realize remote interrogation; all interrogation data are transmitted to the data terminal through the switch for digital storage.