Home video surveillance technology status and innovation

As the pace of life of urban residents has accelerated, people who normally work outside have spent more time outside than at home. The time taken to look after the family and understand the situation at home has been reduced considerably. In order to facilitate the understanding of family safety and family members, real-time monitoring and intelligent control have become an urgent need for people who work hard at home, and the home monitoring system market is born. In recent years, with the development and popularization of network technologies, video technologies, and automation technologies, it has become technically possible to meet this demand, and at the same time, the home monitoring market is the largest piece of cake in the monitoring industry. It also caused many companies in the surveillance industry to infiltrate into this emerging sub-sector, and thus the situation of supply and demand boomed in the market.

Approaching Remote Home Monitoring “Monitoring” includes monitoring and control if it is understood literally. Home monitoring includes home monitoring and home control. Home monitoring includes temperature monitoring, humidity monitoring, wind direction and wind monitoring, and opening and closing of windows and curtains. Monitoring, gas monitoring, intrusion monitoring, etc., through monitoring to understand the situation, and then according to the actual needs of people, through artificial or automated systems to control, to achieve the desired effect of the customer, which achieved home monitoring. If the owner is not at home, coupled with the network, remote home monitoring is implemented.

Remote home control without video surveillance is a terrible thing. For example, a person on a business trip needs to implement the following functions: pet food, watering plants, water gas, doors and windows closed, etc., or other such remote human control or remote intelligent control will walk like a blind person, followed by walking , Can not achieve what you see, do not understand the actual things and actual operating conditions, so remote home control requires video surveillance, remote monitoring, remote control and other operations, so that users can reach the immersive, maximize the virtual The role of the owner of the home. Video surveillance plays a crucial role in the entire home monitoring.

The development process of home video surveillance is long ago when the network technology is still underdeveloped. The video cannot be viewed remotely. The video surveillance is local surveillance or video recording. It is generally used only for general security. If the occupants do not feel at ease with what happened at home, only the situation recorded in the past through the hard disk video recorder will be recorded, and the video will be played back afterwards to understand, for example, the work situation of the baby sitter or part-time worker and the living conditions of the elderly and children at home. If accidents or other emergencies occur at home, tenants can only sigh and regret!

There are many analog video surveillance systems in this stage. Generally, they are configured as front-end analog cameras and back-end hard disk recorders (PC card or embedded DVR) and monitors (professional monitors or computer monitors). The prices are relatively high, and the general economy Only families with good conditions can afford it, and ordinary people do not need it.

Later, with the development of science and technology, and the widespread application of network technology, hard disk recorders can be linked to the Internet. Many people monitor the home through the IE or software client of the computer. Remote video surveillance has begun to be applied to the market, but the network Limits such as fees, bandwidth limitations, and back-end viewing conditions are few applications in the home. At this stage, because the network bandwidth is relatively small, all the way video takes up 256K or less, the transmitted image effect is generally CIF format, the video encoding and decoding technology under low bandwidth environment, video dual-stream technology applications are not many, practical application The effect is not very good either.

Home video surveillance at the present stage of the application of IP cameras, so that home users can save money on monitors and video recorders; wireless network development, the cabling process and cost less, the user's front end as long as the use of wireless IPC can achieve video capabilities, This also makes it possible to quickly reduce the total cost of home monitoring equipment. However, in the majority of people's impressions, IPC prices have remained high, so the market for home monitoring applications is relatively small. With the popularity of the market, chip manufacturers continue to introduce cost-effective chips, and the cost of IPC continues to decrease. In 2011 Shenzhen CPSE Anbo Exhibition, 100 yuan IPC actually have manufacturers in the sale, a little more than 200 yuan also has alarm input and front-end storage capabilities, although the image is not satisfactory, but finally make the IPC price "White cabbage."

It is understood that the domestic IPC market is earlier in the application of several major operators, namely: Telecom "Global Eye", China Mobile "telescope", China Unicom "wide view", early application of their launch is still the industry's majority, generally Commercial users only use it, such as banks, shops, etc., because the early fixed-line applications, the customer must also consider whether the remote computer, whether or not the network, there is no time, the objective factors such as higher prices, less than home users. With the widespread use of mobile phones, operators have also launched 2G mobile network video surveillance for a while to capture the home video surveillance market. However, due to bandwidth limitations, operators have poor image quality, are not smooth, and are generally accepted by customers. Lower, this situation has continued until the end of 2008, the issuance of national 3G licenses. In the past few years, with the popularization and development of 3G networks, the bandwidth and applications of mobile phones have been qualitatively improved, and the seamless integration of wired networks and wireless networks has been technically realized, enabling users to truly monitor the situation of their homes anytime, anywhere. More Talent is willing to accept home video surveillance. 3G mobile video surveillance has become the mainstream of home video surveillance applications.

Home video surveillance to remote access to the home side, at this stage, regardless of network video surveillance or 3G mobile video surveillance, the home must have to be identified IP address in order to achieve remote access to home IP video equipment (NVR or IPC). However, due to the limited nature of network IP resources, if fixed IP is used, the cost is relatively high. Therefore, there are few households that can use fixed IP, and the general approach is to use a fixed IP domain name (eg, peanut shell) to bind with a fixed IP address. Through dynamic domain name resolution, route access is achieved. Peanut shell domain names are available for free and chargeable, with relatively stable charges. Some IPC vendors bundle their own established server domain names when selling IPC. This is also a good practice, but the stability remains to be tested by the market.

Future Trends in Home Video Surveillance Future home video surveillance applications should be more human. As far as remote video surveillance is concerned, although the mythical "telescope" function is implemented, the "wind-wind" function has not been done well, and perhaps the corresponding manufacturer does not focus on this one, so audio monitoring is relatively weak. If there is only video, people at the far end will experience pantomime like in a movie theater. If the story is relatively complicated, one must rely on one's own subjectivity to speculate on it, sometimes causing misunderstandings and delaying the police. The author believes that the future home monitoring system will definitely enhance audio monitoring and interaction, as well as more video input, environmental monitoring, alarm input, voice input and other functions.

The current home remote control system and video surveillance are closely integrated with each other, and many remote functions are implemented. However, most of them are using network hard disk recorders for storage and management and comprehensive functions such as alarms and calls. Video intelligent analysis is also limited to motion detection. On the one hand, the functions are a bit overstretched and unsatisfactory.

In the future, the high-end home monitoring system should also include servers and service centers (property or alarm service centers), use an independent server to manage the home monitoring system, and the service center cooperate with the corresponding emergency services to extend the home monitoring system. High-end systems should also be more intelligent, such as video surveillance can provide advanced video intelligence analysis capabilities, including intelligent analysis of areas and boundaries, portrait recognition, tracking of people, statistics of people. For example, in the observation range of a camera, changes in the range of activities of the elderly, children, and pets can be alarmed; the number of people entering the family can exceed the preset number to make an alarm; a stranger's face in the home area will trigger an alarm. Advanced video analytics also include nannies loitering at home, even items moving or missing detections, etc. The system can automatically identify moving or non-moving objects.

It is understood that the recently launched mobile internet smart home management system of Fujian Guanlin has been applied to the server to manage remote home control systems. The system includes SIP intercom server and RTSP (streaming media monitoring) server to handle remote Video, remote voice, remote control, and other functions enable remote call intercom, remote monitoring, remote home appliance control, and other functions to make video, voice, and control of remote home control more smooth and user-friendly. Integrate remote video surveillance, video control, home appliance control and other functions on the basis of the original building intercom, making family life more intelligent.

Network security concerns home video surveillance should pay attention to network security. Since the home surveillance video control system is connected to the network, in fact, security risks have always existed, but at present, many manufacturers are blind or technically fail to meet the requirements, the network firewall is simple, the application of video encryption technology is not much, the application of encryption algorithm is too simple Equipment manufacturers' factory passwords are almost known all over the world. The installation and drawing of engineering installation personnel are easy to debug and maintain. They often do not bother to change passwords. Customers do not know whether to change the password and not change it.

The Internet has entered human life today. Imagine that when a wrongdoer invades and controls a home monitoring network, it can be tantamount to streaking on the street, and what kind of confusion the victim will fall into? This is unimaginable to the average person. This is even more alarmist than a science fiction film, but because it is based on the reality of life, it may happen.

With the development of remote home video surveillance technology and the popularization of applications, relevant departments have also felt the seriousness of network security. The national standards for smart homes to be introduced in the near future will mention the problem of remote secure login encryption, thus technically preventing future networks. The intrusion home monitoring system can truly achieve the goal of “bringing troops and blocking the water,” allowing users to feel comfortable using remote home video surveillance.