The general monitoring system mainly includes the front part of the control department: camera, lens, infrared light, pan/tilt, intelligent spherical camera, bracket and so on. Transmission part: video line, power line, control line, etc. Key points: video distributor, monitor, large screen splicing TV wall, hard disk video recorder, matrix host, etc.
Monitoring system is one of the most widely used security systems. At present, the most suitable field monitoring system on the market is hand-held video communication equipment, and video monitoring is the mainstream now.
The monitoring system set up by the public security organ or the area with tight security can analyze and judge some suspicious and abnormal situations; Call the police in time in case of emergency and deal with it in time; Afterwards, we can trace the cause of the incident through video. This is the need of case investigation, and the general parties can't get involved in case investigation. Unless the work requires, the public security organs will ask the parties to distinguish, otherwise they can't interfere with the monitoring system casually.
Article 126 of the Criminal Procedure Law, investigators shall conduct an inquest or inspection of places, articles, persons and corpses related to crimes. When necessary, people with specialized knowledge may be appointed or hired to conduct inquests and inspections under the auspices of investigators.