Analysis of the advantages and disadvantages of PC-type and embedded hard disk video recorders

A lot of this information can be found on the Internet today, but there is basically no detailed discussion, and some of it will be accompanied by some radical words, which will bring some misleading to many people. I hope to pass this article and let everyone find out which product they need most. Nowadays, the DVRs on the market are divided into combinations (including the hardware architecture and the type of software). There are three main products, â‘  is pure embedded DVR (hardware and software integrated); â‘¡ is a PC-type DVR (hardware and software are completely separated, and the monitoring system is still based on an operating system (such as: Windows 98/2000 / XP Linux)); â‘¢PC Embedded DVR (hardware and software are separated, but the monitoring system is not based on an operating system, but the kernel of an operating system is extracted and perfectly combined with the monitoring system, and in the form of embedded software Operation. This article focuses on the three aspects of price, performance, stability, easy maintenance, additional functions, scalability, anti-virus, customization, number of single machines, network applicability, and application speed of new technologies. Hard disk video recorder for evaluation. <As shown>

Analysis of comparison results:

The reason for the high price of the embedded hard disk video recorder: it is mainly reflected in that its technical content will be higher than that of the PC, the initial cost of the investment is large, and the enterprises that can intervene are more difficult and less than the PC type. This also caused another reason for the high price, because there are few companies involved, and the transparency and competitiveness of the hardware prices used are not high enough.

The reason for the low price of PC-type hard disk recorders: mainly reflected in the fierce competition and high transparency of its hardware equipment, many of which are assembled by system integrators or engineering companies themselves, saving a lot of brand fees and other additional expenses. Another very important reason is that the operating system of Windows (except for the Linux operating system, which is generally available for 50 yuan, and there is also a free version) is pirated, but the advantages of this Windows version of DVR are now cracking down with Microsoft in China. The action of piracy is slowly losing ground.

The reason why the price of the PC embedded hard disk recorder is in the middle: mainly reflected in the fierce competition and high transparency of its hardware equipment, many of which are assembled by system integrators or engineering companies themselves, saving a lot of brand fees and other additional expenses (this is the same as The same as PC-type hard disk recorders), and the hardware requirements of the embedded monitoring software are lower than those of the monitoring software based on the operating system. In terms of software, its technical content is higher than that of a monitoring system based on an operating system, and its price is relatively higher. However, the overall price of hardware (in the case of the same number of channels and the same acquisition card) and software is basically the same as the price of PC hard disk recorders (if Windows DVR is not the price of the Windows operating system).

performance:

The reason for the high performance of the embedded hard disk recorder: the hardware is mainly reflected in that its internal boards are integrated on one or two motherboards. After the technical integration of the manufacturer, its configuration is lower than that of the PC. The running performance is not inferior to that of a PC with a certain hardware configuration; it is mainly reflected in the software. Its system is perfectly integrated with the operating system of the hard disk recorder, which directly calls the hardware and speeds up. The reaction time improves the running speed and reduces many unnecessary extra functions. The hard disk recorder based on Linux and Windows operating systems is absolutely impossible.

The reason for the low performance of the PC-type hard disk recorder: the hardware is mainly reflected in that it is self-assembled, and its technical integration is not high enough. There are also some system integrators and engineering companies that do not have much strength in this regard. They do not have enough knowledge about hardware knowledge and the combination of hardware and software, which causes some improper matching of high and low configurations, which is also a very important reason. . However, the current hardware performance is already very high, and the development is quite rapid, which is not enough to affect the performance of the PC-type hard disk recorder, but the cost performance has been reduced; the software is mainly reflected in that it is based on Windows and Linux operating systems, running There are many functions that are not required by the monitoring system. This not only has many redundant functions, but also affects the running speed. It is also one of the main reasons for the instability of the monitoring system.

The reason why the performance of the PC embedded hard disk recorder is centered: the hardware is basically the same as the PC hard disk recorder. But in software, it is a direct call to some hardware and removes most of the redundancy (for the monitoring system) function of the operating system. The performance of a solid-state PC embedded hard disk recorder is higher than that of a PC-type hard disk recorder.

stability:

The reason for the high stability of the embedded hard disk recorder: the hardware is mainly reflected in the integration of all parts on a motherboard, and the adaptability to harsh environments such as shock and dust is better; the software is mainly reflected in its system and hard disk recorder The (DVR) monitoring system is completely integrated and is not easily affected by some additional factors, such as the instability of the operating system itself and the undesirable factors caused by redundant incidental functions. However, some inferior embedded DVRs have poor stability.

The reason for the low stability of the PC-type hard disk recorder: The hardware is mainly reflected in the fact that all parts are connected together by a card type, and the adaptability to harsh environments is not good enough. This is a common problem since the PC, but with the With the development of the current hardware technology, this has been greatly improved compared with the previous years. In this respect, the gap with the embedded hard disk recorder has become less and less; the software is mainly reflected in the operating system (Windows, Linux) itself. In terms of stability, Linux is more stable than Windows.

The reason why the stability of the PC embedded hard disk recorder is centered: its hardware is the same as the hardware of the PC-type hard disk recorder, but the software is not based on an operating system, which can eliminate the instability caused by the operation itself. influences. And the high technology content, the general enterprise does not have this ability to enter, but also brings another guarantee for the stability of the PC embedded hard disk video recorder monitoring system.

Easy maintenance:

The reasons for the low maintainability of the embedded DVR: mainly reflected in the hardware, because of the high degree of integration, the professional quality of the maintenance personnel is quite high, which is too much for the current national conditions of China. Small, if something goes wrong, it should be sent back to the manufacturer for repair. The repair cost can be imagined, especially after the warranty period has passed. This process can range from one week to more than a month or two. This has caused serious internal dislikes for customers to use and the next purchase. It has also caused a lot of trouble for many engineering companies, and even customers have been lost; from the software In general, the embedded software basically needs no maintenance, and its software maintenance cost is much lower than the monitoring system based on Windows and Linux operating systems.

The reason for the ease of maintenance of the PC-type hard disk recorder: the hardware is mainly reflected in that because the PC can be assembled by itself, the hardware can be purchased everywhere, and the engineering company will also have some spares. In addition, the professional quality of the maintenance personnel is also high, so that even if the PC hardware has problems, it can be quickly resolved; the software is mainly reflected in the Windows and Linux systems are too complicated, and the redundant functions are more troublesome to maintain, but the most It's not a big deal to reinstall the system once, and it's far more convenient and faster than sending the embedded hard disk video recorder back to the manufacturer.

The reason for the high maintainability of the PC embedded hard disk recorder: its hardware maintenance is the same as that of the PC-type hard disk recorder, while the embedded software is basically the same as the software of the embedded hard disk recorder, and it can be considered that it does not require maintenance. Its easy maintenance is the highest, most convenient, and the lowest cost.

Additional functions:

The reason why the embedded hard disk video recorder has few additional functions: it is mainly reflected in the hardware that there is basically no interface with other hardware, and some are only serial ports, VGA, etc., which are relatively simple and dedicated, which is very unfavorable for expansion; It is reflected that the storage space of the embedded software is too small (such as Flash is only a few M), which also determines that the additional functions of the embedded software cannot be many. In addition, the development of an additional function of the embedded software requires more investment cost and time. It is another very important reason for the decision.

The reasons for the many additional functions of the PC-type hard disk recorder: from the hardware, it is mainly reflected in its good compatibility with other hardware, and the interface is also very complete. Many devices on the market today can be directly connected or connected to the computer through an adapter. Connect, and then install the driver to call the hardware; the software is mainly reflected in the Windows and Linux operating platform can call some of the system's own functions and use very mature visual programming tools to quickly develop software, which It also greatly saves development costs and development cycles.

The reason why the incidental function of the PC embedded hard disk recorder is centered: the hardware incidental function is basically the same as that of the PC-type hard disk recorder. But its software comes with fewer functions than the operation-based monitoring system (this is mainly because the embedded monitoring software removes a lot of redundant functions, which is conducive to the stability of the system and the improvement of the operating speed), but it is better than embedded It ’s much easier to develop and add than embedded.

Expandability:

The reasons for the low scalability of the embedded DVR: mainly reflected in the high integration of its hardware, the single interface is not compatible with other hardware. In terms of software, its scalability is also very low due to its size limitation, excessive input cost, and long development cycle.

The reason for the high scalability of the PC-type hard disk recorder: its hardware has a common interface with most electronic products on the market, and it can be called after the driver is connected and installed. Because its software is based on the operating system, it can easily call the functions and packaged codes of the operating system and use video programming to quickly develop the functions required by customers.

The reason why the expandability of the PC embedded hard disk recorder is high: its hardware is the same as that of the PC-type hard disk recorder, which is very good. The development of Linux software is now close to windows in terms of functions, but the visual window operation is poor, and the development is more difficult, but its scalability is higher than that of the embedded hard disk recorder software.

Antiviral

The reason why the embedded DVR has high anti-virus: mainly because its hardware and software are dedicated, the data stored in the chip is read-only and cannot be written, and the software has very few additional functions, so the virus cannot start.

The reason for the low virus resistance of the PC-type hard disk recorder: its hardware is universal, and the calling interface of each hardware is also public. The main reason is because it is based on the operating system, and the operating system itself has many vulnerabilities (especially the Windows operating system, because of its high penetration rate, it has become the target of many hackers), which is for hackers Provides an opportunity to take advantage.

The reason why the anti-virus performance of the PC embedded hard disk recorder is high: the hardware is universal, and the calling interface of each hardware is also open, but the possibility of causing system poisoning is quite low. Another reason is that the system of PC embedded hard disk recorder is integrated with the monitoring system using the kernel of a certain operating system, and the entire system is stored on the CF card as read-only, so the virus cannot be written and destroyed.

Customization
The reason for the low customization of the embedded hard disk video recorder: it is because its hardware is mostly dedicated and has poor compatibility with other hardware, and the cost of customization is high. Software is also an important reason for low customization due to difficulties in development, high development costs, and long development cycles.

The reason for the high degree of customization of the PC-type hard disk recorder: because its hardware interface is universal and open, it can connect with most electronic products on the market. In addition, the operating system comes with powerful functions, good encapsulation of the bottom layer and video programming tools. Its custom function has a short development cycle, low cost, and low technical content. These provide a congenital for the customization of PC-type hard disk recorder Sexual conditions.

The reason why the customization of the PC embedded hard disk recorder is high: because its hardware is basically the same as the hardware of the PC-type hard disk recorder, but its software customization is more difficult and costly than the software customization based on the operating system. Large, high-tech content, but Youpu Technology has many years of experience in developing under Linux, and there is no problem with customization.

Single channel
The number of stand-alone channels of embedded DVRs is mostly sold on the market as 16 channels (the highest is also 24 channels, but it is not very stable, and a large number of producers still have many problems on the 16 channels); PC-based hard disk recorders have the highest Up to 64 channels; PC embedded hard disk video recorder can reach 24 channels, and is quite stable.

Network applicability
The reason for the low network application of the embedded DVR: Although the embedded DVR can also provide the connection and viewing of the local area network and the external network, it is still inferior to the PC architecture for networking with the optical transceiver and microwave equipment.

The network application of PC hard disk recorders and PC embedded hard disk recorders are both high: The reason is that microwave and optical transceivers are developed for the PC architecture (because embedded is born later), and the core of PC hard disk recorders The network characteristics of the PC and the core network characteristics of the PC embedded hard disk recorder are based on the same protocol (TCP / IP), and can be well interconnected.

New technology application speed
Most of the technology of embedded hard disk video recorders are dedicated, so it is difficult to immediately convert the high-tech in their field to their own use; PC-type hard disk recorders and PC embedded hard disk recorders because their hardware is universal and open New technologies are generally developed based on them, and the maturity of new technologies generally means the maturity of use on PC hardware. As a result, their application of new technologies is relatively fast.

As mentioned above, embedded hard disk recorders, PC-type hard disk recorders, and PC embedded hard disk recorders have their own advantages and disadvantages. Which one should I choose or which one is suitable for my current situation?

As can be seen from the above list, embedded hard disk recorders and PC-type hard disk recorders are more suitable for the use of poles (basic is a special case, the above list can be well reflected), while PC embedded hard disk recorders use the first two hard disk recorders Taken together (this is a product that was born in response to market demand), it appears to be a neutral, that is, popular type, which can well meet the needs of most customers.