2013年5月2日星期四

Network Camera installation method

Network Camera installation method
If you want to install the IP Camera, a strong performance computers is essential Windows95/98/NT/2000 or Linux operating system of the PC, you can use the existing network architecture In addition, Apple Computer good choice. While the general market computers usually have network support, and the browser, so the user can easily start IP Camera, you do not need to be nerve-racking for other peripherals.
Set a password to add network traffic security
If you are using the IP Network Camera, it is recommended to set a password to protect the camera admitted; password can prevent the information, but also to ensure that the camera operation setting will not be arbitrarily altered. To apply in places with higher security requirements, IP Network Cameras can be connected to the computer with special protective measures, and can use encryption technology, such as HTTPS protocol to ensure the confidentiality of information.
High-quality images and Conditions
If you want to capture high-quality images, the user should be noted that the display settings of your computer screen, the screen colors at least up to 65.000 yuan;, flat-screen LED display screen is very convenient to use, but when viewing images, the effect is instead not as good as the CRT screen. Other high-quality image requirements are as follows:
Using a large number of light
In many cases, the image quality is poor due to the low illumination. In general, the stronger the light, the higher the quality of the image; weak light, the color of the image is easy and monotonous, blurred. General professional photographers will be using the camera flash to make up for the lack of light.
In addition, higher resolution camera can work under the conditions of illumination is less than 1 Lux, but that just means that the camera can capture images in 1 Lux, this does not mean that at 1 Lux can get a good image; To capture high-resolution images, the illumination of at least reach 200 Lux.
Avoid backlight
In general, the the camera dynamic ability to regulate is limited, should try to avoid bright areas of the image, bright images may lead to excessive exposure, the object will appear too dark.
Reduce contrast
Users can adjust the camera's exposure level to obtain the average illumination.
  
Install outdoor camera
If you want to IP Cameras installed outdoors, you need to configure the outdoor cabinet. Outdoor cameras generally use automatic zoom lens, image sensor light can be adjusted to improve the dynamic function of the camera, and protects the image sensor from light damage.
Outdoor IP Camera Notes are as follows:
Lighting at night using the camera, in order to avoid reflections and shadows typically need lighting equipment, you can use infrared lights to replace ordinary light bulbs. However, the user must use a black-and-white camera with infrared lighting equipment video servers, because the black-and-white camera more sensitive to infrared light, the color camera can not play the infrared function.
Avoid direct shot sunlight to avoid direct sunlight image. Direct light causes the camera can not capture an image, and permanent bleaching may make the color filter on the sensor chip, the image is streaked. If possible, the installation and the need to keep the camera and sunlight in the same direction, and try to avoid shooting at the sky.
Amplifier gain in the computer can adjust the gain level of the image sensor, the higher the gain, the better the performance in low light, but interference will expand. In low light, you can use the high gain in order to achieve better performance, in the light of good quality, low gain the same access to high-quality images.
Usually shutter speed of the shutter speed should be set to 1/50 or 1/60 sec; weak light when the exposure time is long, good performance can be obtained. If you want to capture fast-moving images, the shutter speed should be set to 1/10000 seconds.
Choosing the right lens
The base of the base of the camera, there are two main criteria:
CS-mount sensors and the distance between the lens is 12.5mm.
C-mount sensors and the distance between the lens for 17.5mm. If you can not focus, is the choice of the wrong type of base.
In addition, users can use a 5mm collar (C / CS adapter ring), C-mount lens to a CS-mount lens.
Sensor size Sensor size is larger, the more expensive the lens; 1/2 "lens for 1/2", 1/3 "and 1/4" sensor, but not for 2/3 "sense of detector using a large sensor the smaller sensor manufacturing of the lens, the image will appear Noire.
Focal Length Focal length of the sensor composition together to form a viewing angle; the small Focal length of the wide viewing angle, the larger focal length has a narrow viewing angle telephoto, and in adjusting the focus of the telephoto lens, the operation must be more precise.
Lens Type
There are three main types of lens:
1 a single Focal length: focal length is fixed, such as 4mm, 8mm.
2 zoom lens: the focal length can be adjusted within a certain range, such as 4-10mm; the focus unchanged when the focal length changes.
Variable focus lens: This is a low-cost zoom lens; when the change of the focal length of the lens must refocus; usually for 3.5-8mm.
Iris iris is a mechanical device used to regulate the amount of light passing through the lens. There are three different types of iris lens in:
1 manual iris: turning a ring to adjust the iris.
DC auto-iris: the output of the camera to adjust the iris.
Image automatic iris: an analog video signal to adjust the iris; This type is not commonly used. Outdoor commonly used automatic iris lens to protect the image sensor from light damage.
Network transmission line
  
PSTN telephone mode are widely used to connect an external network, low-cost and practical, but the transfer speed is not fast, sometimes a transmission error conditions, need to resend the data. Download a file, the maximum speed of up to 56 kbit / s, but when uploading a file, the maximum speed of 33.6 kbit / s.
ISDN telephone mode usage in many countries are very high, the maximum transmission speed of 128 kbit / s.
XDSL mode xDSL modes include: ADSL, HDSL, IDSL and VDSL, is becoming more and more popular. Telecommunications services companies and ISP vendors offer the xDSL transmission mode, as long as you pay a fixed monthly fee, you can connect to the Internet.
ISP vendor's standard speed are not the same, there are also differences in the upload and download speeds. Usually download speed is about 1Mbit / s upload speed is about 250Kbit / s.
Cable TV Cable Modem Cable TV cable transmission, this service is more popular in the densely populated metropolitan area. Speed ​​between the different regions have different speed with around how many users used the service are subject to change. The general maximum speed of 1Mbit / s.
T 1 is connected by the Internet ISP vendors, pay a fixed monthly fee, you can press the need to connect to the Internet. This line companies and business firms or Internet cafe line usage is high, the unit is more popular. The connection speed of 1.5 Mbit / s. There are two main criteria; .10 Mbit Ethernet use 10BaseT twisted pair and coaxial cable (RG-58) 10Base2. 10Base2 somewhat unreliable, if the cable anywhere interrupt condition occurs, the entire network will stop working, it is not commonly used. Usually transmission capacity is 10 Mbit / s 50%.
.100 Mbit Ethernet standard is 100BaseT, about the use of 100Mbit / s capacity 50%; switch, you can use 100% of the capacity.
(GB) .1000 Mbit Ethernet backbone for building the main criteria is 1000BaseT about 1000Mbit / s 50% of capacity; if there is a switch, you can use 100% of capacity. Mobile phones (GSM, CDMA, CDPD, TDMA) mobile phone mode (such as for traffic monitoring cameras connect to a remote camera) a good, no telephone line. The transmission speed is low, it can meet the needs of static images. Usually the communication speed range 5-20Kbit / s.
Wireless Network (IEEE 802.11) by eliminating the need for cable, wireless Internet and more popular. There are many standard for high-speed wireless communication the, usually maximum communication speed range-11Mbit / s; the ships actual speed for 1 Mbit / s.
Wireless network (Bluetooth)
Bluetooth wireless communication standard, is an increasingly popular and a maximum speed of 720 Kbit / s, and the the ships actual speed of 500Kbit / s.
 
The optional connection line recommendations
· Phone mode is suitable for applications that do not need high-speed transmission.
· XDSL applicable in the office or shop home.
· Mobile phone or wireless network for remote camera.
· Building is recommended to use the 100Mbit Ethernet.
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Note optional HD IP Camera

Note optional HD IP Camera
For us, what is the most suitable for our products? Current definition network camera as clear as possible in what circumstances you? Here, we are discussed below to help you unlock the selection of HD IP Camera confusion .
Currently, with the security work increasingly dependent on the surveillance cameras, surveillance cameras clarity is also getting higher and higher expectations of people. It seems, high-definition technology has become a fashion people to choose and the use of surveillance cameras. Based on this, the market for high-definition IP Camera also developed extremely strong. All kinds of new products and technologies emerging, the manufacturers seem to pull out all the stops as the hope of efforts to meet the needs of different users.
Clear or not, the most important practical
When we choose HD IP Camera is the most important preparatory work to clear their own needs. Average cameras already have a high imaging capability. Therefore, unless special monitoring capabilities (such as intelligent transportation, financial institutions and other fields), or an ordinary HD IP Camera has been sufficient to meet the daily needs of the security monitoring work. Excessive imaging configuration In addition to the wasteful and does not give the monitoring work to bring more convenience.
Image quality, consider the various factors
HD network camera performance, certainly we should start with the picture quality to be judged. When you sure you necessarily need a high-definition camera to meet your needs. Then during the selection process, you need to pay attention to the clarity of the camera in different states (dynamic and static), color reproduction, and so on. There is in the case of shooting different objects, the picture quality is still able to maintain the same clarity and stability. For a surveillance camera image quality, the horizontal resolution is only one of the main reference. Wide dynamic, automatic white balance, digital noise reduction, automatic metering compensation has a deep effect on the image quality of the security cameras. Make changes in light and dark transition zone is natural, wide dynamic ability to automatically adjust the low light detail whether the observed effect is clear, and the degree of the effect of noise. Largely reflects the level of the high-definition camera.
HD effect, casting of multiple factors, the most important overall solution
In fact, the complexity of the work of the HD IP Camera in addition to the machine's high-tech investment, supporting facilities is good or bad image quality is an important reference factors. Such as the regulation of surveillance cameras is perfect, the menu features, as well as install the debugging process lens optional, will largely determine the clear picture quality. In addition, the signal transmission line meets the demand for transmission of high-definition camera, the terminal transmission access device compression decompression work high quality also affect the quality of work is good or bad HD IP Camera.
So, the realization of high-definition monitor the effect of, not only need a simple HD IP Camera itself can be done, but by security cameras, surroundings, equipment and other factors cast. Therefore, in the selection of high-definition camera, in addition to surveillance camera itself, some more concern for the environment, I am afraid that your harvest will be more than expected.
From:http://www.vstarcam.com/channel/Note-optional-HD-IP-Camera-87.html

HD IP Camera are widely used in traffic monitoring

HD IP Camera are widely used in traffic monitoring
Network IP Camera is one of the hotspots of the digital surveillance market in the past two years, the network camera can support high-definition video capture, you can use ordinary data network video long-distance transmission, IP Camera very broad application prospects. In the field of traffic monitoring applications widely used in analog cameras and fiber optic transmission means, due to technical limitations need to be mounted camera for each channel, fiber transmission cost is very high.
HD IP Camera application will completely change this situation. In the traffic monitoring system, network cameras can be installed at the intersection of the road, used to capture traffic light intersection traffic conditions, a high-definition network camera can simultaneously monitor multiple lanes; also can be placed in places of frequent traffic accidents for recording the whole process of the accident, the protection of a wide range of scenes can be clearly recorded; also can be placed in traffic is frequently congested road, used to view each section of the vehicle congestion. The use of high-definition IP Camera, not only to give the transport system to provide a more convenient means of monitoring, but also for the public service of road traffic conditions, the driver can choose the best routes based on what they saw traffic information.
Use of HD IP Camera traffic monitoring system, which greatly enhanced the monitoring and management capacity of the transport system. I believe in the near future, local traffic monitoring system and the national long-distance traffic monitoring system are integrated to form a three-dimensional traffic monitoring system, this trend will be an important part of building a "Green City" become a new hot spot .
From:http://www.vstarcam.com/channel/HD-IP-Camera-are-widely-used-in-traffic-monitoring-86.html

2013年5月1日星期三

Infrared technology in high-definition monitor 

Infrared technology in high-definition monitor
Data from the statistical point of view, compared with 2009, the 2010 HD IP Camera market increased more than 200%. Analog cameras in 2011 but the amount of drop down together, the market share has fallen to 60%.Most monitoring equipment manufacturers optimistic estimates, in 2015, the of megapixels digital HD IP Camera will exceed the simulation camera, the overlord of the field of security monitoring.

The drawbacks of analog control to highlight the growing social requirements continue to increase the level of security monitoring, in this case, a high-definition monitor with its clear, excellent quality monitoring, is leading the development trend of security monitoring. HD monitor not only in the technical aspects of the mainstream of today's security surveillance and future trends in the market, the demand for high-definition monitor is growing, from the Government's Green City, to port traffic real-time monitoring, management from the factories and mines to the chain shops security operations, more and more projects and works began in high definition, digital surveillance.
In the market in recent years, infrared IP Camera is also quite popular. In 2003, the domestic surveillance manufacturers have begun to explore the infrared camera.With the continuous development of technology and market in 2006, many domestic surveillance equipment manufacturers have been introduced to the market a large number of infrared cameras, so far, according to statistics, the infrared gun camera production accounted for about 50% of the total monitoring camera This shows that the market for infrared Network Camera huge demand.
Infrared technology because of its the shooting in zero illumination at night environment can achieve a clear picture, in recent years, been widely used in the field of security monitoring. IR IP Camera auxiliary light source, in order to complete the monitoring work in the night or zero illumination environment, the development of the LED array of infrared light, infrared Network Camera technology in an increasingly development and progress from the early high-power halogen to meet security monitoring market demand.
The past two years, the security monitoring of high-definition, network-based, intelligent trend has accelerated noticeably, as a security monitoring front-end equipment, infrared cameras are moving in high definition, networked, intelligent direction. In 2012, the infrared camera in addition there will be breakthroughs in infrared technology, but also toward the direction of the high-definition, network-based, intelligent integration of the development. Of course, for now, the infrared IP Camera also exist a number of disadvantages, such as interference from stray light, LED light source life is short, uneven image screen brightness, long distance volume is too large, color distortion. Which is in dire need to overcome a technical problem.
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The outbreak of the demand for high-definition monitor IP technology really mature?

The outbreak of the demand for high-definition monitor IP technology really mature?
Four years ago, IP video surveillance boom has been spreading in the country, but now the network monitoring equipment is still facing asked, deploy less embarrassing dilemma. For high-definition monitor buzzword HD and megapixels has been a household name, but if you want to implement in action, seem to have some distance. Tired of hearing about the advantages and disadvantages of IP surveillance, let us today to talk about the future of network video needs to be mature direction.
Video surveillance has a long history, especially simulation technology has become the industry originator. IP is an exciting new development, from the the analog monitoring technology point of view, IP interpretation of a completely different meaning, more and more enterprises in the reserved simulation, have also turned to IP services. The impact of network monitoring technology development including cost, reliability, system maintenance, people do not know the IP but also its questioned. Time prove that the output value of technology to determine success or failure.
Network monitoring pursuit of service
Today, Ken willing to pay money for the network surveillance cameras there are two main user groups: one is the average consumer, the other is not bad money for government projects. Network surveillance cameras (hereinafter referred to as IPC) technology and software to connect to the network, increasing the the IPC flexibility and scalability, lower installation costs. However, they need comprehensive monitoring and management software and complex network settings through the network firmware upgrade. Seems kind of advantage becomes a disadvantage feeling.
The premise of the work of the IPC must have a network, IP Camera is no longer a simple product, but to enhance the service capabilities. Therefore, how to provide effective services to become a key factor for the breakthrough in market share in the field. Resolution and price of a single product IPC is not the biggest advantage. This service includes not only the after-sales maintenance services, but also to improve product features, interface standards, in order to respond quickly to market demand.
The pursuit of industry-standard hardware compatible
Said network monitoring is a very expand the equipment, then the compatibility of the product is well prepared for it? Enhance the compatibility of products from software and hardware to proceed, to go through a rigorous testing process before the product is shipped, such as aging, stress and environmental testing. The test camera even round-the-clock monitoring also do not have to worry about the problem of the failure rate.
Standardization of the security industry has been the focus of discussion in the industry, how to protect all IP Camera uniform standards is a difficult topic. First three security industry standard ONVIF, PSIA and HD-CCTV, followed by these standards to see market applications, more than 70% of the members of the ONVIF protocol are well-known in the security industry and authoritative, so that formed to promote the network monitoring good platform. Security products do not exist under the same standard is not compatible with the phenomenon.

Exactly the same control room camera concocted rely on software
IP Camera software embedded development direction.
In addition to hardware standards-compliant software system upgrade is to help improve user operability. In the research and development of a product, not only to spare no effort in appearance within its core is critical. Network monitoring system, using the Windows operating system can not be used by some of the "old man", whether on the platform transition, or at the same time compatible with Linux system, this is the need to face the problem of product development.
Single surveillance cameras, in fact, embedded processing applications in IPC than analog cameras is more complex, which requires R & D staff to write thousands of lines of code, and the code quickly phased out over a period of time, by simplifying the code , to increase system speed.
As security companies, the future development of software design is essential. Especially in the era of IP video surveillance system applications and requirements are manifold. In order to meet the needs of different users, beginning in the design may demand should write code, the subsequent work hard to add new features for a a machine, so before mass production, software development mitigation is particularly important. Original Address:
For a mature company, if you want to improve the product, it must be integrated in the monitoring system HD IPC modules, decoders, and supporting NVR, neither the incompatibility of different equipment, does not give the user caused burden.
Finally, I would like to help home know some network monitoring misunderstanding, reason will produce misunderstanding, must be because the technology is not mature, but not as vulnerable. Network transport stream congestion, intelligent IPC event trigger, dynamic detection and preset time to choose whether or not to send the video, and the need to transfer video information will not be too much.

Business owners push network surveillance cameras
On the network monitoring system stability issues. It is undeniable that the wireless monitoring has encountered the problem of unstable network transmission, but you can not stick brandish a group of simple monitoring equipment, monitoring systems, components than the analog system maintenance, but that does not mean than the by poor stability.
The pros and cons of network monitoring is difficult to measure, but for the future direction of the products or monitoring technology, we should be aware. Need to be mature technology does not mean that is the defect, we need to leave enough time for the IP market, let him become the minds of consumers surveillance products.
http://www.vstarcam.com/channel/The-outbreak-of-the-demand-for-high-definition-monitor-IP-technology-really-mature--85.html
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Analysis of high-definition surveillance cameras night vision problems and breakthrough

Analysis of high-definition surveillance cameras night vision problems and breakthrough
Since 2010, after two years of market cultivation, high-definition camera is from the "trend" into "reality". Many HD IP Camera manufacturers have sprung out of the traditional analog camera manufacturers have gradually transition to high definition. In the market, more and more agents, contractors and authorized users HD. It can be said that since 2012, high-definition cameras began to usher in the peak period of development.
Specifically, despite still being generally referred to as "millions of high-definition, but the clarity of high-definition camera has been greatly improved, the pixels from 600000, 1300000, 2000000-5000000 increments, and some manufacturers even Claims pixel level has been raised to 20 million; has been rapid development in the mode of transmission, IP and HD-SDI, and each occupies a small market share. In addition, in terms of color reproduction and smart analysis, millions of HD IP Camera has been greatly improved.
But because the technology is not mature enough, high cost and other factors, mainstream applications of the high-definition camera products focused on the government, banks and other high-end market, other areas still analog products. Which HD cameras commonly used CMOS chip, lower color saturation, texture and sharpness performance is slightly inferior, shooting in low light at night, often less than ideal. Based on this, some manufacturers introduced HD 960HCCD network products, Sony Effio-EN700 line program, low light, pure digital interface, image pixels of about 600,000, not only during the day, high-definition shooting night clear color imaging, solution to the problem of millions of HD IP Camera night vision.
Limitations of CMOS HD camera
The so-called CMOS, i.e. complementary metal oxide semiconductor, the master is made of silicon and germanium semiconductor by the negatively charged and positively charged CMOS transistors to implement the basic function. With a CCD (charge-coupled device is a from the image semiconductor electronic organization up method), they are used in image semiconductor sensor, it is a PN semiconductor can convert light photons combination Be into a proportional number of electrons. However, in order to distinguish the two, we habitually called the CMOS sensor or CCD sensor, but does not indicate the method of processing images.
Compared to CCD sensors, CMOS sensors do not require complex signal processing, direct image semiconductor electron into a voltage signal, in a short period of time to deal with large amounts of data, the output of high-definition video, and therefore adapt to high-definition camera needs . Advantage of the high level of integration, the automatic gain control, automatic exposure control, gamma correction, backlight compensation and automatic shading correction is far stronger than the CCD sensor. Meanwhile, in order to make the image easier to carry out network transmission, camera manufacturers are constantly improving the processing efficiency of image compression coding. Today, 1.3 million pixel HD IP Camera (720P) chip technology, CMOS position of absolute dominance.
However, in terms of sensitivity, the human eye can see 1Lux illuminance (Clear Night Setting) is equivalent to the full moon following objectives; CCD sensor is only slightly better than the human eye, between 0.1 ~ 3Lux; CMOS sensor sensitivity ships in the 6 ~ 15Lux, equivalent to the CCD sensor 1/10 ~ 1/3, the noise up to nearly 10 times of the CCD sensor. Therefore, in the night low-light environments, CMOS cameras is far less than the CCD sensor. While the CMOS sensor has done a very large sensitivity CCD sensor, but the requirements of the DSP processing speed is very high, virtually pulled up the price of a CMOS camera, short term large-scale applications.
The future, with the step-by-step solution of the problem of network bandwidth, both the cost of large-scale construction and upgrade and maintenance convenience and other advantages million HD IP Camera to a wider range of applications, and even become the mainstream of the surveillance cameras. But for now, the night vision technology is not yet mature, coupled with higher costs, which greatly restricted the popularity of HD IP Camera.
For most users, the night periods of high incidence of crimes of all sorts of events, which is the key period of the security video surveillance. Select a poor night vision cameras, video surveillance will in time be a great blind spot, unable to meet the requirements of 24x7 security. But on the other hand, users see more clearly "as well as remote monitoring, intelligent analysis of the demand is equally pressing. This requires the camera to find a balance, and can not simply return the old analog cameras on during the day and night shooting. Thus, 960H network HD technology into the field of vision of the camera manufacturers.
SonyEffio-EN night vision principle of the program
In 2009, Sony Corporation of Japan launched Effio-E program, the official standard of the program is: 4127 +4816 +673. Through the Effio-EDSP with the 960HCCD (EXviewHADCCD Ⅱ) with can reach 700TVlines standard resolution the image pixels 600,000 pixels (pixel). Compared with the previous program, it can provide a clearer picture, better color saturation and brightness.
One of the most advanced chip technology as the field of analog camera, Sony Effio-E program has the advantage of high-resolution, high signal-to-noise ratio and high color reduction degree of the "three high". Demonstrate the finer images in the electronic zoom, and 3D noise reduction technology, effectively reduce the image noise in low light conditions to maintain the sharpness of the image. Coupled with a higher degree of color reproduction, a wide range of automatic white balance adjustment and partition compensation function effectively improve the details of dark areas and overexposed loss, to ensure the integrity of the recorded image.
In practical applications, Sony Effio-E program cameras often with infrared-definition lens, excellent image detail, color reproduction is real bright, bright, no color cast, and the image is sharp, light luminance processing ability, with a realistic sense of depth, the maximum to achieve the imaging screen of the day / night. At the same time, the use of the latest generation of dot-matrix LED light source (IR the Ⅳ technology), the photoelectric conversion efficiency, lower power consumption; with intelligent optical technology, infrared light and white light at the same time fill light, night vision pure color effects can be achieved.
In 2012, Sony Effio-E program upgrade, Effio-EN program came into being. Compared with Effio-E program, the new DSP image quality, sensitivity and color saturation tends to be more perfect. Especially in the transmission mode, the upgrade from analog transmission to digital transmission, a qualitative breakthrough in image fidelity.
The use of digital signal transmission
In the signal transmission process, the traditional analog cameras must, through the sensor optical signal is converted into an analog electrical signal, and then converted into a digital signal to analog to digital conversion and chrominance and luminance processing, then the digital signal is analog-to-digital conversion and modulation PAL / NTSC system standard analog video output signal arriving at the DVR and other back-end device, by the video capture chip analog signal is converted into a digital signal. 3 times in this process, of the AD conversion, and may cause damage to a certain degree of quality. When the camera SonyEffio-ENF program, this transmission mode has been unable to meet the requirements.
Therefore, some camera manufacturers to improve the transmission mode of 960HCCD camera in the camera's built-in network module, pure digital interface, eliminating the need for the signal the compression conversion link, to enhance the transmission speed, and to avoid damage to the signal transmission process . , And millions of HD IP Camera in transmission mode and back-end with the sharing of resources.
Analog cameras still occupy most of the market share, especially in high-definition CMOS HD camera technology is still not mature enough, the cost can not be rapidly declining situation, analog video surveillance will continue to exist for a long time. Although the government, banks and other high-end market, high-definition camera is the first application of the plot, shop, small supermarket, office buildings and other small and medium-sized monitoring system, analog cameras is still a high cost option.
But should also see that China's security monitoring the transition to high-definition video surveillance from analog video surveillance, users "see more clearly" as well as remote monitoring, intelligent analysis of the increasingly high demand for analog camera market share will be gradually reduced, Megapixel IP cameras represent the future of the industry. During the transition period, 960HCCD HD IP Camera with day and night equally outstanding advantage is expected to be more widely used in the industry accounted for the majority of small and medium-sized surveillance. Entered the high-definition era, its night vision technology to bring HD IP Camera manufacturers inspiration.
From:http://www.vstarcam.com/channel/Analysis-of-high-definition-surveillance-cameras-night-vision-problems-and-breakthrough-84.html
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IP Camera dispatched know-how

Network monitoring installation trouble? IP Camera dispatched know-how
In the current equipment, surveillance Network Camera
is undoubtedly the most audience. From long-term development, to or from the convenience of the application, network monitoring equipment have been laid in the hearts of a very good impression. However, the use may not be installed, many users own monitoring in reducing the effects of things because of improper installation. So, the installation of the Network Camera, what should we pay attention to it?
The camera position needs
For surveillance cameras, the location is good or bad is directly related to the imaging results. Therefore, many users will monitor the effect as a primary reference of the surveillance cameras installed position. However, they ignore the very important point: surveillance cameras is not a panacea, it also has its own requirements on the choice of installation location.
The first is in the installed position of the camera in order to be able to avoid the interference of the surrounding environment, to achieve a better camera and survival effects. The installation of the indoor environment, we want to ensure as much as possible the height of not less than 2.5 meters in an outdoor environment, we should be monitoring equipment exposure to more than three and a half meters height from the ground. Otherwise, either from the camera self-protection or equipment monitoring point of view, will have a lot of negative effects. Only take into account these basic questions, the angle is we consider.
Camera wiring needs
For Network Camera, its line construction is clearly richer than traditional analog devices. However, no matter what kind of transmission, interference is one of the issues that we have to pay attention to. Especially for wired transmission of the video signal, the signal line and the same high-power wires to the transmission is undoubtedly taboo in the process of the overhead line, the impossibility in order to facilitate the construction of the two on the same transmission line pipe. Even when subjected to environmental constraints, it is not the two separated, and also to ensure a separation distance of at least half a meter. Only such a plan, in order to better avoid magnetic interference for video transmission.
For a wireless signal transmission device, although fewer restrictions in line. But the camera itself should also avoid the surrounding magnetic interference source. Ensure the camera with the ground at the same time insulate.
In addition, we also pay attention to avoid the line PTZ work and hinder.
Purchase of the illumination environment
Night surveillance cameras, in order to avoid reflections and shadows, usually lighting equipment, you can use infrared lighting to replace ordinary light bulbs. However, you must use the black and white surveillance camera with infrared lighting network surveillance video server, because the black and white surveillance camera is more sensitive to infrared light, color surveillance camera can not play the infrared function. Original Address:
Today, there are already a lot of cameras are beginning to use wide dynamic features to enhance their imaging capability backlit environment. However, this is not means that the camera can be sustained in the light of the environment to complete the work. Because the light shining direct light is likely to cause difficult for IP Camera to normal positioning accurate image, eventually leading to permanent bleaching of color filter on the sensor chip, the camera in the surveillance video streaks. Therefore, if possible, as much as possible so that the camera is in a "cis" model, but in any case, we have to avoid bright light for a long time on the camera lens directly stimulate.
High-performance terminal indispensable
All along, the bandwidth limitations is difficult to extend a major reason for network monitoring. It is also because of this factor, resulting in long-term network users polarization - the strength of the self-built network, and the user did not have the strength or only to endure the slow transmission, or to find another way out. However, with the compression technology continues to improve, as well as the optimization of the network environment. Network monitoring the living environment is becoming increasingly getting better.
However, if the general public network users in order to achieve better network monitoring, a state-of-the-art performance processing terminal is clearly indispensable. On system performance, we should maximize the use of current state-of-the-art processing system such as Linux or win7, and has a state-of-the-art CPU, a relatively large capacity memory and graphics cards, to be able to let our equipment will play the imaging results more comprehensive .
In addition, in our system, there are other auxiliary alarm facilities, focus on their compatibility with the system, focusing on the stability of the device itself to work in the current environment, we need to focus on when the device is set up and commissioning.
Installation of equipment accessories
In addition to the above-mentioned aspects, some auxiliary equipment of the Network Camera installation specifications also not be neglected element in the construction. For example, let the camera pan and tilt, rack equipment installation location meets the design requirements, installation should be smooth and firm, easy operation and maintenance. The back and sides of the rack away from the wall to meet the maintenance requirements; necessary, the installation of the camera protective cover or temperature control device, and so on. As for the have complex lines connecting link, we should also indicate the usefulness and characteristics of each line, in order to safeguard the future and combing. Monitoring equipment offer
Mentioned above, is required to set up a simple network monitoring system, the focus link. Compared to large, complex monitoring system, these apparently simple and intuitive. However, from a critical point of view, these can be said to affect the quality of the camera work the lifeblood of the link, must not be ignored. Only if we grasp the above-mentioned important but easily overlooked elements, it may enjoy more efficient and convenient network monitoring.
From:http://www.vstarcam.com/channel/Network-monitoring-installation-trouble-IP-Camera-dispatched-know-how-83.html
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