<br> <br> system functions from the system functional point of view, PC-type hard disk digital video surveillance system (hereinafter referred to as PC-based) and embedded digital hard disk video surveillance system (hereinafter referred to as embedded) there is no big difference, both All functions such as PTZ control, playback retrieval, multi-screen monitoring, password protection, automatic recording, mobile detection alarm, and call restart can be realized. However, PC-type products can generally use the PC platform to implement more auxiliary functions, such as: Electronic maps, image capture, printing, etc., and because of the adoption of an open operating system for the PC model, the expansion and expansion of functions generally requires only software modification, which is relatively easy. However, due to the use of a dedicated system, the expansion of functions requires hardware implementation. Operation is relatively difficult.
Operation interface
PC type generally adopts windows operating system (some products use linux operating system), all operations are completed by computer, which requires the operator to have a certain degree of computer knowledge, and generally need frequent factory training before operation. Embedded dedicated operating system generally used, the operation through the remote control or the hard disk recorder control panel on the function keys to complete, the operation is relatively simple, and does not require the operator to have professional knowledge, due to its humanized design, so the operator is generally only Simple training allows you to master the operation of the device.
Hardware platform
PC type generally uses computer to insert video compression card to build its hard disk platform. According to different requirements for equipment stability, it can use industrial control host or commercial host computer (industrial control host's stability and anti-jamming performance is higher than that of commercial host computer, and the price is also A lot higher, such as the SN2000 series PC-type products used to improve the stability of industrial control host). The embedded host is developed specifically for monitoring needs, reducing unnecessary hardware and enhancing the functions of the monitoring part. Its operating system generally uses an operating system that is specially developed for monitoring needs (eg, SN-DVR uses Is the PSOS embedded operating system).
System performance
From the above, we can see that PC-type features are powerful, while embedded products are more stable. The main reasons for this are the following: 1 The embedded operating system is relatively simple, developed specifically for monitoring needs, removing many unnecessary functions, and writing to the embedded host in hardware, and the windows operating system, Not only for the development of monitoring, its main function is to manage the computer, provide powerful auxiliary functions for individual users, such as the Internet, word processing, etc., which are generally stored in the hard disk of the computer, so due to the use of different operating systems, Embedded is more stable than PC type; 2 embedded hardware adopts modular design, and is specially developed for monitoring needs. Its hard disk is mainly used to record monitoring data, while PC type has more functions for personal computer users. The data on the operating system and other users' personal data should be recorded on the hard disk, and the stability cannot be compared with the embedded one.
Upgrade extensions
PC-type upgrade is generally relatively easy to upgrade, such as a 4-channel digital hard disk video surveillance system simply add video compression card, you can easily expand to 8, 12, 16, or even 24 channels. Embedded upgrades are relatively difficult, and due to internal space constraints, embedded devices generally support up to 9 channels (although some 16-channel embedded products are available on the market, their practicality has been greatly reduced).
External expansion
The so-called external expansion, refers to the external devices, so that the system features have been greatly enhanced. The PC type adopts an open structure and its external interfaces are all standard interfaces, so it is easy to connect various devices such as printers, linkage alarm devices, etc. The embedded type is weaker than the PC type, but it is not compatible with other monitoring devices. The connection and connection of related alarm devices are generally no problem. For example, SN-DVRET series products are also very powerful in external functions. They can be matched with various cameras and can be connected to a variety of linkage alarm devices.
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