Brief Analysis on the Use of Wuxi Dehang Technology Security monitoring Importance of the system
The importance of the security monitoring system is well known. In our daily life and work, the monitoring system can ensure the safety/security of our personal and property. Nowadays, all walks of life use video monitoring installation systems, which also have many types.
The security monitoring system is mainly divided into the following categories:
Small model
There is no strict limit on the size of the system host required for the system. Usually, when monitoring omnidirectional video camera When the number of servers reaches 3 to 4, you can think of using small system hosts. Although multiple single channels controller Or a multi-channel (such as 4-way or 6-way) controller can also realize omnidirectional camera control, but it requires more control cables (at least one for each channel), 10 core cables, and the length of the cable is too long (the voltage drop caused by the long line resistance may cause the translation/tilt and electric lens to slow down or even become inactive), and the whole system will appear messy.
Closed circuit monitoring
Closed circuit television monitoring system: it is an important part of the security technology pre/defense system. It is an advanced and highly preventive integrated system. It can be viewed directly through the remote camera and its auxiliary equipment (lens, pan/tilt, etc.). By monitoring all conditions of the site, you can see the situation of the monitored site at a glance. At the same time, the TV monitoring system can also be used together with other security/safety technology pre prevention/defense systems (such as anti-theft alarm system) to make its defense capability more powerful.
Monitoring
In the TV monitoring system, it is usually necessary to monitor the on-site sound (for example, the bank teller system), so from the perspective of system structure, the entire TV monitoring system consists of two parts: image and sound. Due to the increase of sound signal acquisition and transmission, in a sense, the size of the system is twice that of the pure fixed-point image monitoring system, and the synchronization of image and sound signal should be ensured during transmission.
Complete/full monitoring
The omnidirectional monitoring system uses an electric zoom lens to replace the fixed focus lens in the above fixed-point monitoring system, and adds an omnidirectional translation/tilt that can move up, down, left and right (there are two motors/tilt in the pan), so that the camera at each monitoring point can move up, down, left and right, And the focal length of the additional lens can also change within a certain range (the monitoring scene can be expanded or advanced). Obviously, the movement of translation/tilt and electric lens needs to be controlled by the controller or decoder in cooperation with the system host.
Fixed point
A simple fixed-point monitoring system is to place a fixed-point camera (a camera with a fixed focus lens) on the monitoring site, and transmit the video signal to the monitor in the monitoring room through a coaxial cable. For example, the camera is placed at the door of a small factory, and the video signal is transmitted to the monitor (or TV) in the factory office through a coaxial cable. The manager can see who is late for work or leaves early. Whether the factory has its articles. If you configure another recorder, you can also record monitor screens for later search and verification.
Low cost type
In this system, the PTZ lens controller is replaced by the sub control keyboard SP8050, so the connection line of the system is relatively simple. The SP8050 is also equipped with remote control switch (SP2000 series) and screen splitter. The switch also has an alarm function. When an alarm occurs, the camera can automatically switch and record the alarm. In terms of cost, it is lower than the system using system host/matrix switcher.
Wuxi Dehang Technology Co., Ltd., founded in 2010, is a computer network system integration and weak current engineering service company.
For many years, the company has been committed to information system integration, Internet/Intranet software development, building a technical service network covering the whole country, and providing a complete set of solutions for large, medium and small users such as early planning, scheme design, application development, system installation, debugging and personnel training of information systems and weak current systems. So far, it has provided hundreds of large and medium-sized computer network systems and weak current engineering solutions in the fields of finance, insurance, securities, power, banking, civil aviation, railway, water conservancy, petrochemical, national defense, customs, telecommunications, scientific research institutions, etc.
