Analysis of advantages and disadvantages of mobile video surveillance

The gradual improvement and upgrading of 3G will prompt security monitoring from the cable video surveillance of the PC to the wireless video surveillance of the mobile phone. Remote video surveillance through mobile phones will become the mainstream of mobile video surveillance. For example, users can monitor home conditions through 3G mobile phones, and at the same time make 3G home terminals (front-end monitoring devices) have professional wireless remote monitoring functions. When a thieves invade, accidental fire or gas leak, it will send alarm information. Send it to the owner's mobile phone and let the owner know and handle it in time. The 3G home terminal can also shoot real-time video images of the next home according to instructions and send it to the owner's mobile phone for later forensics, which is quite attractive for high-end homes.

In recent years, with the rise of smart phones such as IPHONE/Andriod, the performance of mobile phones has been further improved, and the original monitoring software has also been upgraded for the characteristics of mobile video transmission, making it ideal for mobile phone monitoring. Some manufacturers have started to combine 3G wireless video surveillance with mobile applications to enable real-time online viewing of remote video images.

Whenever and wherever the user is, as long as the signal on the mobile phone can be monitored in real time and the front camera PTZ control. Mobile phone monitoring support 3G, WIFI and other kinds of standard, support IPHONE4, IPAD, Android, WindowsMobile and other mobile operating systems. The commercial scope of 3G wireless networks is becoming wider and wider, and the bandwidth of wireless networks has also been greatly improved. The application environment of mobile video surveillance has become more and more mature. Mobile video surveillance can watch remote monitoring content in real time in any space and at any time.

The advantages of mobile phone monitoring mainly reflect:

Wide coverage: The wireless network coverage of mobile phones is very high, and is not limited by complex terrain and areas such as mountains, rivers, and bridges.

Low cost: It eliminates the high cost of long-distance network cabling.

Easy to monitor: You can use your mobile phone to perform wireless video surveillance anytime and anywhere. It is not limited to a computer that is pre-installed with a monitoring client.

Various services: Mobile phone monitoring can not only cover all fixed network monitoring services, but also can carry out various mobile services, such as mobile law enforcement monitoring, mobile interviews and so on.

The difficulties faced by mobile video surveillance:

Bandwidth and frequency resources are limited: Since the effective bandwidth of a single terminal of a public mobile communication network is quite limited, it is often necessary to carry voice, data, and other transmission services simultaneously. Even if a current 3G network is used to transmit CIF images, one base station cannot exceed three monitoring points. , And wireless broadband is characterized by multi-user resource sharing, bandwidth uncertainty in the transmission, broadband with the increase in the speed of the decline, the current speed of 3G network can reach 1M, only a few tens of bytes when the speed is slow, so Can only be used as an auxiliary transmission method.

The bit error rate of the wireless channel is relatively high: especially when the terminal device is in a moving state, the available bandwidth and bit error rate index are greatly reduced, the available bandwidth fluctuates frequently, and the high bandwidth video monitoring data is prone to packet loss. Sex is not high.

High tariffs: Generally speaking, the cost-effectiveness of wired transmission is higher than that of wireless transmission, and broadband transmission is even more so. The operating costs of the 3G wireless video surveillance system include broadband Internet access fees for video sources, mobile viewing fees, monitoring system operating costs, etc. The total operating costs are high, and it is difficult to reduce.

Sharpness is not good: Video surveillance on a mobile phone is often limited by the size and resolution of the phone screen and may not be able to focus on the details of the screen.

The application of 3G wireless video surveillance is a process of gradual advancement and evolution. The market prospects are great, but there are corresponding problems in some places. We need to gradually improve in the future development, especially with the gradual promotion of the 4G pilot. The transmission conditions will be greatly improved, thereby expanding market demand.