The main function of a tripod
As an important auxiliary tool in photography, the main functions of a tripod can be summarized as follows: 1. Stabilize the camera to prevent shaking 2. Precise composition and shooting control 3. Expanded special shooting scenes 4.Other accessibility features
Read More >As an important auxiliary tool in photography, the main functions of a tripod can be summarized as follows: 1. Stabilize the camera to prevent shaking 2. Precise composition and shooting control 3. Expanded special shooting scenes 4.Other accessibility features
Read moreBased on our experience, combined with the classification standards of industry leaders such as Hikvision, Dahua, Uniview, and Axis, the following is summarized:
Read moreFrom the statistics of the top 50 listed companies in the field of physical security in 2023, it can be seen that this year's top 50 companies in the world show a positive trend. The top 10 companies - Hikvision, Dahua Technology, ASSA ABLOY, Motorola Solutions, Axis, Allegion, Tiandi Weiye, Hanwha, TKH (Intelligent Vision System) and AIPHONE all achieved year-on-year revenue growth in 2023, ranging from single digits to low double digits.
Read moreThe total sales volume of global surveillance cameras in 2024 is expected to be between 150 million and 200 million units, of which smart cameras will dominate, and traditional wired products will still have a certain scale. The specific data needs to be disclosed in a more comprehensive industry report.
Read moreThe pan tilt positioner/pan tilt head is a supporting device for installing and fixing the camera. It can ensure that the camera can move in four directions, up, down, left and right, to obtain a wider viewing angle. The function and function of the monitoring PTZ is to support adjusting the camera focus, depth of field, and aperture to obtain better image collection effects at any time.
Read moreHow to choose a pan tilt unit/pan tilt positioner ? When many people choose a pan tilt unit/pan tilt positioner, they will look at the pan tilt unit/pan tilt positioner brand. Brand is one aspect, but...
Read moreWhat is the function of each wire in the 8-core wire of the network cable in video surveillance systemWhen many friends connect the network cable, they usually don't know the eight copper wires in...
Read moreThe Internet is a symbolic product of the information age. Since the end of the 20th century, the Internet has really entered thousands of households. As the degree of automation and intelligence beco...
Read moreA slip ring is an electrical component responsible for connecting and transmitting energy and signals to a rotating body. According to the transmission medium, slip rings are divided into electric sli...
Read moreThe slip ring is a ring connected to the center conductor, and a ring connected to the outer layer of the cable as a shielding ring. Coaxial shielded slip rings are usually used to transmit signals ab...
Read moreIn 2022, most of the top 50 global security companies have achieved significant growth. However, this year is coming to an end, and the security industry is facing many new problems. These "uncer...
Read moreThe North American security market saw some growth as the post-pandemic economic recovery prompted businesses and project work to return to normal. At the same time, supply chain shortages and uncerta...
Read moreNetwork cable, as a part of the design and construction of integrated wiring, is the basic medium of most information transmission systems. Its importance is self-evident. This paper will analyze the ...
Read moreⅠ. Centralized power supplyCentralized power supply means that the source devices are centrally installed in the power room and battery room, and the electric energy is uniformly transformed and dist...
Read moreⅠ. Video signal interfaceIntroduction to the types of surveillance video cables:According to the material, there are SYV and SYWV. The physical material structure of the insulating layer is different...
Read morePhotons and electronsThe basic premise of electronic imaging is that light energy is converted into electricity in a way that preserves visual information, allowing us to reconstruct the optical prope...
Read moreWhether you are looking for a color night vision security camera or an infrared outdoor security camera, a complete, well-designed system depends on choosing the best and most suitable night vision se...
Read more1. What is network HD video surveillance?The network video system usually refers to the IP monitoring system used for specific applications in the field of security monitoring and remote monitoring, w...
Read moreAs the video surveillance system is recognized by everyone, more and more people protect themselves and their property by installing video surveillance cameras. But sometimes people will find that the...
Read moreStep 1: Take out the bracket and prepare the tools and parts: plugs, screws, screwdrivers, small hammers, electric drills and other important tools; check the size and model of the plugs and self-tapp...
Read moreWireless surveillance cameras are loved by most people because of their wiring-free. In particular, it is widely used in small household monitoring systems. The selection of the installation point of ...
Read moreCOVID-19 can be spread through droplets formed by coughing and breathing, so epidemic monitoring and prevention in public areas has become an important part of containing the epidemic. During the Spri...
Read moreEvery year, I look forward to the development trend of the security industry in that year. I recently reviewed the outlook articles I wrote and found that although the trends were predicted correctly,...
Read moreⅠ. Definition of face recognitionFace recognition technology began in the early 1970s and is a typical application in computer vision (CV). Computer vision belongs to deep learning (DL).At the same t...
Read moreWe often see that the parameters of the camera say that it supports 120dB wide dynamic, where 120dB is actually a ratio, which means that the ratio of the illuminance between the brightest part and th...
Read moreInfrared camera night vision fogging is a very common problem, but the industry has not been able to solve this problem well. For example, the EZVIZ cloud brand owned by the industry leader Haikang ha...
Read moreFocal lengthThe distance from the principal point on the rear of the lens to the optical axis of the imaging plane is the focal length. The smaller the value, the wider the shooting range (wider angle...
Read moreThere are too many classification standards for security cameras. If the standards are too trivial and the classification is too fine, many cameras will appear in different classifications at the same...
Read moreWe need to know H.264 before talking about H.265. H.264 is one of the video codec technology standards named after the H.26x series by ITU-T. There are two international organizations that develop vid...
Read moreBased on the existing content of the security knowledge network, we organize the content in combination with some common foreign video surveillance terms to help industry professionals quickly underst...
Read moreRecently, many readers who have just entered the industry have reported that they want to have the latest video surveillance terminology documents. Therefore, based on the existing content of the secu...
Read moreⅠ. Bandwidth and storage computingBandwidth and storage are very important in video surveillance projects. The following points should be considered when designing bandwidth usage and storage size:1....
Read moreWhat is the difference between substream and mainstream? Why is the monitoring always stuck? How to calculate the monitoring hard drive capacity quickly? In this article, we will look at relevant cont...
Read moreThe direction against the wind is better for flying.Preface: There are four parts that need to be considered for the monitoring project, which are the front-end system, the transmission system, the st...
Read more91. What impact does the power supply have on the server-side monitoring system?A: Unstable power supply (too high, too low) will damage the computer.B: Too much power ripple system will cause video i...
Read more81. What are the classifications of cameras?A: By color: color camera and black and white cameraB: According to the system: PAL system and NTST system82. What is the imaging principle of the camera?Th...
Read more61. How to choose a power cord in the centralized power supply?The power cord is required to use an outdoor waterproof cord of 1.5 square meters or more.62. Why choose a centralized power supply in th...
Read more41. What are the main functions of the mainframe of the monitor in the server-side of the surveillance system?A: Data audio communication with the visual-audio controller.B: Data audio communication w...
Read more21. What are the ways of installing and using the infrared lamp?A: Usually, it should be installed beneath the camera.B: The power supply is AC130V-AC260V22. How shall we classify the multimeter?A: Di...
Read more1. Why is the stabilized voltage supply used in the power supply system?To prevent monitor and control unit from damages caused by the over-high or over-low voltage fluctuation of power supply.2. Does...
Read moreⅠ. I frameI frame is also called intra picture. I frame is usually the first frame of each GOP that is a video compression technology used by MPEG. After moderate compression, it can be used as a ref...
Read more1. Detector based on the principle of resistance micro-radiation measurementThe thermistor is affected by infrared radiation and will change its temperature, which in turn changes the resistance value...
Read moreThis year's global security top 50 list is finally released. Although the security industry has been affected by the epidemic in the past 1-2 years, the global ranking does not seem to be affected. Except for the emergence of a new challenger, Motorola Solutions, the position of leading companies remains solid.
Read moreBecause of COVID-19, all parts of the world are in panic and disorder. In daily production and life, the testing standard for people's physical health is 37.3℃. As a result, various infrared temp...
Read moreFrom the official websites of Haikang and Dahua, there are currently no 5G surveillance cameras, but there are some 5G NVRs, DVRs, and car DVRs. This confirms our previous conclusion: At present, 5G i...
Read moreThe effect of IP cameras is affected by many factors. The use of cameras in the market is already very extensive, but IP cameras have become one of the most popular cameras. So what is it affected by?...
Read moreUltra-low-light cameras are hot spot products in the surveillance industry that have been launched in recent years with the development of semiconductor technology. It has been widely used in the fiel...
Read moreUsers' misunderstandings of night vision cameras can easily affect the purchase and the later using experience of the camera. This article sorts out the common misunderstandings in the industry at...
Read moreIn the security system, image generates mainly from CCD cameras. CCD is the abbreviation of charge coupled device, which can change light into electric charge, store the charge and transfer it. Also, ...
Read moreThe working principle of infrared thermal imaging and an introduction to infrared detectors.The corona virus can spread through droplets formed by coughing and breathing. Therefore, epidemic monitorin...
Read moreThe constantly evolving software-defined network market provides new development opportunities for the global network surveillance market.MarketsandMarkets, the world's second-largest market resea...
Read moreAccording to a CCTV financial report, chip prices have risen continuously in recent years, and chips have changed from being unavailable to unaffordable. The latest research report of Goldman Sachs po...
Read moreThe effect of network cameras is affected by many factors. The use of cameras in the market is already very extensive, and network cameras have become one of the most popular cameras. So what is it af...
Read moreSecurity monitoring system is an emerging profession that has been paid more and more attention by people. As far as the current development is concerned, the application is more and more popular, and...
Read moreⅠ. Selection of video monitoring cables 1. Video cable: When the distance between the camera and the monitoring host is less than or equal to 200 meters, usually about 100 meters, you can use SYV-75-...
Read more1. Explanation of preset position functionWhen the user operates the terminal's monitoring pan/tilt to monitor the target through the control device, the operator can set the current monitoring ta...
Read moreThedome camera is a representative of the development of modern TV surveillance. It integrates a color integrated camera, a pan/tilt, and a decoder, a protective cover and other functions, easy to ins...
Read more1. Classification of security camera bracket(1) According to the material, it can be divided into metal security camera bracket, plastic security camera bracket, etc.;(2) According to the type of use,...
Read more1. Introduction of PTZ video cameraA PTZ video camera is a camera with PTZ(Pan/Tilt/Zoom). It is equipped with a device for carrying the camera to rotate in both horizontal and vertical directions. Mo...
Read moreIn the coming December 2020, a few COVID-19 vaccines will be ready to get approved, security industry and expertise are thinking what security measures we are using in the current situation are about to remain in the future.
Read moreIn 2020, the Covid-19 epidemic has changed people's lifestyles, but also changed the development and future of many industries.During the epidemic, sales of thermal imaging cameras that can measur...
Read moreOn November 13, a&s magazine announced the 2020 "Global Security Top 50" list. This ranking conducts research and analysis on influential companies around the world and ranks their secur...
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