demand analysis

 

    Investigators: For some highly dangerous prisoners, real-time and complete monitoring of their activities is required; in case of accidents, to ensure the safety of themselves and others in the prison; linkage with the network digital broadcasting system through the monitoring and alarm system The automatic alarm module installed in the cell can automatically alarm the cell in real time through the network digital broadcasting system; any police officers who violate the regulations in the cell with the image monitoring system can alert the police through the alarm broadcast. Prisoners pay attention to effectively prevent new criminal activities from being unburned; at the same time, they can also broadcast alarm/alert broadcasts to the cells through the remote control center. In everyday use, the broadcast system can automatically play science, education, legal and cultural knowledge in an unattended manner.

 

    Around the prison, at the entrance: the perimeter of the prison and the entrance to the prison are the parts of the prison that are connected to the outside world. It is often where the detainees escape from prison. The alarm/warning broadcast is transmitted through the image monitoring system and the broadcasting system, which can effectively guarantee these places and again. The personnel who are in charge of the care are safe, and can effectively cooperate with the prison guards to prevent the detainees from jailbreaking and prevent the entry of outsiders.

 

    Public places: In prisons, public places such as canteens, auditoriums, playgrounds, workplaces, etc. are relatively concentrated in prisoners. Due to the mixed situation of prisoners, it is easy to have various abnormal situations. In the case of relatively few prison guards, To ensure the safety of personnel and facilities in various public places, certain safety monitoring and alarm measures must be taken. Through the monitoring system, the near-real-time monitoring and recording of these occasions can be effectively performed, and the image monitoring system can be linked with the network digital broadcasting system. In the event of an abnormal phenomenon, timely warnings were issued to the prisoners on the scene and an alarm signal was sent to the relevant prison administration to promptly deal with various abnormal phenomena.

 

    The working and living area of ​​the caretaker: In order to ensure the safety and stability inside the prison, the prison guards responsible for the management of the detainees and the armed police officers responsible for the safety of the prison are responsible for the important tasks. Their safety is the top priority for ensuring the overall safety and stability of the prison. Through the linkage of the image monitoring system and the network digital broadcasting system, the control room can be set up in the work area of ​​the caretaker, and the situation in the whole prison can be effectively mastered in case of fewer guards, so as to respond in time; The establishment of image monitoring and alarm equipment in the working and living areas of personnel and the network digital broadcasting system can effectively ensure the safety of the caretaker and lay a good foundation for the overall safety and stability of the prison.

 

    The characteristics of the IPB broadcasting system solution of Oubo Prison: transmit 36V low-voltage DC power through the network cable to supply power to the terminal, avoid 220V power supply to the monitoring room, and solve the safety hazard to the greatest extent. The broadcasting system consists of a broadcast master control server, a management center computer, a digital broadcast front (connected to a high-power amplifier for outdoor use), a power amplifier, a loudspeaker (a ceiling speaker, a waterproof sound column, etc.), and a broadcast management software. The digital broadcast pre- and network voice terminals are key devices for the difference between the digital broadcasting system and the analog broadcasting system. The two devices can directly connect the digital broadcasting system to the IP network.

 

    At the entrance and exit guards and the warden's office, there is a sub-control point (workstation), and the prison management personnel can speak to any of the prison terminals in the prison to deal with emergencies in a timely manner. The main unit or the sub-control room realizes the sound selection of the sound source, the music line of the terminal of the power supply opening and closing terminal partition (all), the volume level, and the lock broadcast.

 

    Multi-channel audio source can be played at the same time. The broadcast main control room can select the corresponding village to listen to the corresponding program through software, and can realize all the villages at the same time and broadcast different contents at the same time.

 

    The broadcast broadcasted at a specific time can be pre-programmed by the management center software. After the programming is completed, the broadcast system will automatically broadcast according to the task, realizing the unattended function, and the system can receive external audio sources, such as radio stations, CDs. Sounds such as tapes can be collected in real time or at regular intervals by the system and broadcast to the corresponding villages. It also has a recording function for these external sources. The broadcast cockpit can monitor the broadcast content of each village. For each village broadcasting equipment, remote power control can be realized, and its working status can be viewed through the management center software, which is convenient for system maintenance personnel and maintenance of the equipment. All the above operations are uniformly managed by the broadcasting main control room, avoiding Previous management difficulties have also reduced the workload of system maintenance personnel.

 

    Obo Prison IP Network Broadcasting System Technology Advantage: Streaming Data Forward Error Correction (SDFEC): This is the latest research result of the US Electronic Visualization Laboratory, combined with the company's multimedia data transmission in the IP network. Years of R&D practice, fault-tolerant algorithm for streaming media data with independent intellectual property rights in IP networks. The advanced nature of this technology not only completely solves the serious delay caused by the traditional TCP/RTP/RTCP and other reliable transmission protocols that require reverse channel transmission of ARQ data and transmission of redundant data, but also perfectly solves the one-way transmission protocol such as UDP. The problem of reliable data transmission. Therefore, the flow data according to the forward error correction engine can ensure that each of the network audio products of the company has good network reliability and adaptability to various network environments, and on the basis of ensuring the integrity of the multimedia data, The data transmission delay caused by network instability factors is reduced.

 

    PADAIM (Power Amplifier Data Automatic Instrumentation Mode): This is a fully automatic, fully floating replacement core technology developed by Ou Bo. The system can diagnose the faulty device in real time according to the voltage, current, temperature and short circuit/open circuit data transmitted by the power amplifier in real time, and perform real-time equipment replacement according to the preset replacement rules. The cut-off has changed the replacement mode of the traditional complicated power amplifier equipment, so PADAIM can ensure that the Orbo network audio broadcasting system realizes reasonable full redundancy with a simple system structure. It also ensures seamless switching between system devices.

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