Traffic Monitoring System The traffic monitoring system provides an intuitive field image to the command center. Usually, more than 70% of people's information comes from the visual field. Commanders and relevant leaders can fully understand the actual traffic conditions and security status of major roads and key traffic intersections through display devices such as large screens and computers, and provide first-hand information for decision makers. In the event of an emergency, the event process can be watched on a large screen in real time, playback video can also be called, and the like. Therefore, the performance of the front-end camera section and the quality of its image signal will directly affect the system's real-time recording and real-time monitoring.
Under the framework of high-definition surveillance technology, a high-definition camera can achieve the monitoring effect of several ordinary cameras, and its monitoring coverage is wider and wider, and the image resolution is higher and the amount of information is more abundant. Therefore, high-definition monitoring can be very effective. Reduce the scale of the system and avoid complicated video images, control and power transmission lines. In addition, the front-end and back-end device configurations can be greatly reduced, thereby reducing overall construction costs. Therefore, high-definition surveillance technology will promote the construction of video surveillance systems to a intensive and efficient transition.
High-definition cameras use advanced photoreceptors to make the details of the images clearer and more detailed. The progressive scan method can provide better image quality, effectively solve the comb-like blur caused by interlaced scanning, and also provide applications such as intelligent analysis. The favorable preconditions are of great significance for intelligent analysis applications such as license plates and face recognition.
Million HD cameras misunderstanding
When the HD camcorder was first introduced on the market, due to the constraints of comprehensive environmental factors such as bandwidth, hard disk, processor, technology level, and price, it showed an incommensurability with the market at the beginning and due to the supporting facilities of the time. The technical level is limited. In practice, not only does it fail to show its advantages, but it also has many application drawbacks. However, it is precisely because of the disadvantages that caused many misunderstandings of the market for millions of high-definition camera products, and because these misunderstandings have limited millions. The rapid development of high-definition camera products. However, after several years of exploration and development, millions of high-definition camera products have already emerged a powerful vitality. Here I will analyze and positively analyze some misunderstandings of millions of high-definition camera products due to historical reasons.
First of all, at this stage, the market generally believes that "Millions of HD cameras are expensive engineering luxury items." In actual fact, in the past, almost all the millions of HD cameras on the domestic market came from foreign manufacturers and their domestic agents. Due to insufficient competition and higher manufacturing costs compared to domestic products, the price of the products was extremely expensive, and many users were Can only be discouraged, leading to millions of HD cameras have become the market's "concept" products. Today, some domestic core technology manufacturers with powerful R&D strengths have broken through foreign technology blockades and layered technical difficulties. Domestically produced million-megapixel high-definition cameras have great competitive advantages in terms of cost.
Second, the hard disk occupied large. In the traditional concept, a million-megapixel high-definition video camera has a large code stream due to its excellent overall picture quality, and its hard disk requirements are also very high. However, with the development of computer hardware, the price of hard drives is getting cheaper and cheaper, while the capacity is getting bigger and bigger. Although the resolution of digital 720P is twice as high as that of D1, its code stream can be almost equal to that of D1. The reason is that the millions of high-definition camera screens are clean without snow noise, and there is no image interference in the video transmission process, so the code stream and hard disk space are greatly saved. For analog cameras, all snow noise will be recorded in the form of moving images. So overall, the problem of large space occupied by the hard disk has been fully solved.
Third, there is not enough bandwidth. In actual terms, the transmission and recording bit rate of the 720P25 frames/sec is between 500K-3Mbps, which is actually slightly larger than that of the traditional 352x288 resolution 25 bit/second 250K bit stream, but it's local In the video surveillance environment, there are no problems at all with optical fiber and broadband. In the remote monitoring environment, dual-stream technology can be used. In the remote display, CIF is used, while local HD video processing is used. Since the development of technology, there is no need to worry about the bandwidth problem affecting the quality of the project.
Fourth, digital cameras are just cameras for network monitoring. There are many users on the market who refer to digital HD cameras as network cameras. This is not accurate because of the in-depth knowledge of digital million HD cameras. The biggest feature of digital cameras is high definition, which is a natural replacement for analog cameras. The network monitoring is only one of the functions of the camera. In the digital million HD camera series, the network is only a transmission method. There are other transmission methods such as USB and VDSL.
Under the framework of high-definition surveillance technology, a high-definition camera can achieve the monitoring effect of several ordinary cameras, and its monitoring coverage is wider and wider, and the image resolution is higher and the amount of information is more abundant. Therefore, high-definition monitoring can be very effective. Reduce the scale of the system and avoid complicated video images, control and power transmission lines. In addition, the front-end and back-end device configurations can be greatly reduced, thereby reducing overall construction costs. Therefore, high-definition surveillance technology will promote the construction of video surveillance systems to a intensive and efficient transition.
High-definition cameras use advanced photoreceptors to make the details of the images clearer and more detailed. The progressive scan method can provide better image quality, effectively solve the comb-like blur caused by interlaced scanning, and also provide applications such as intelligent analysis. The favorable preconditions are of great significance for intelligent analysis applications such as license plates and face recognition.
Million HD cameras misunderstanding
When the HD camcorder was first introduced on the market, due to the constraints of comprehensive environmental factors such as bandwidth, hard disk, processor, technology level, and price, it showed an incommensurability with the market at the beginning and due to the supporting facilities of the time. The technical level is limited. In practice, not only does it fail to show its advantages, but it also has many application drawbacks. However, it is precisely because of the disadvantages that caused many misunderstandings of the market for millions of high-definition camera products, and because these misunderstandings have limited millions. The rapid development of high-definition camera products. However, after several years of exploration and development, millions of high-definition camera products have already emerged a powerful vitality. Here I will analyze and positively analyze some misunderstandings of millions of high-definition camera products due to historical reasons.
First of all, at this stage, the market generally believes that "Millions of HD cameras are expensive engineering luxury items." In actual fact, in the past, almost all the millions of HD cameras on the domestic market came from foreign manufacturers and their domestic agents. Due to insufficient competition and higher manufacturing costs compared to domestic products, the price of the products was extremely expensive, and many users were Can only be discouraged, leading to millions of HD cameras have become the market's "concept" products. Today, some domestic core technology manufacturers with powerful R&D strengths have broken through foreign technology blockades and layered technical difficulties. Domestically produced million-megapixel high-definition cameras have great competitive advantages in terms of cost.
Second, the hard disk occupied large. In the traditional concept, a million-megapixel high-definition video camera has a large code stream due to its excellent overall picture quality, and its hard disk requirements are also very high. However, with the development of computer hardware, the price of hard drives is getting cheaper and cheaper, while the capacity is getting bigger and bigger. Although the resolution of digital 720P is twice as high as that of D1, its code stream can be almost equal to that of D1. The reason is that the millions of high-definition camera screens are clean without snow noise, and there is no image interference in the video transmission process, so the code stream and hard disk space are greatly saved. For analog cameras, all snow noise will be recorded in the form of moving images. So overall, the problem of large space occupied by the hard disk has been fully solved.
Third, there is not enough bandwidth. In actual terms, the transmission and recording bit rate of the 720P25 frames/sec is between 500K-3Mbps, which is actually slightly larger than that of the traditional 352x288 resolution 25 bit/second 250K bit stream, but it's local In the video surveillance environment, there are no problems at all with optical fiber and broadband. In the remote monitoring environment, dual-stream technology can be used. In the remote display, CIF is used, while local HD video processing is used. Since the development of technology, there is no need to worry about the bandwidth problem affecting the quality of the project.
Fourth, digital cameras are just cameras for network monitoring. There are many users on the market who refer to digital HD cameras as network cameras. This is not accurate because of the in-depth knowledge of digital million HD cameras. The biggest feature of digital cameras is high definition, which is a natural replacement for analog cameras. The network monitoring is only one of the functions of the camera. In the digital million HD camera series, the network is only a transmission method. There are other transmission methods such as USB and VDSL.
Field fence also called Hinge Joint Fence grassland garden mesh(Grassland Fence).
Field Fence is commonly made for hot dip galvanized Wire , the rate of zinc is generally 40-50g/m2, wet regions are higher, using around 230g/m2. Some contries like Africa use the elctric galvanized wire instead.
Usully the horizontal wire using steel wire to increase the mesh impact resistance.
Filed fence specification:
1. top and bottom wire diameter: 2.5mm
2. inner wire diameter: 2.0mm
3. the common size: 7/150/813/50, 8/150/813/50, 8/150/902/50, 8/150/1016/50, 8/150/1143/50, 9/150/991/50, 9/150/1245/50, 10/150/1194/50, 10/150/1334/50, 11/150/1422/50 (The first data is the No. of line wire: The second data is horzontal hole size: The third data is the height of field fence: The fourth data is the total length of each roll)
Field fence
Farm Fence,Hinge Joint Fence,Galvanized Field Fence,Grassland Fence
Anping Deming Metal Net Co.,Ltd , http://www.fencedm.com