In order to achieve the application of industrial explosion-proof monitoring in the flammable and explosive field environment, explosion-proof cameras came into being. Explosion-proof cameras also began to be widely used in various fields. It is worth noting that, unlike the general situation in the electronics industry, the development of explosion-proof cameras in China is quite early in the international industry. In terms of technical level, it is always inferior to similar foreign products.
When choosing an explosion-proof camera, it is difficult for us to look at the quality of the explosion-proof surveillance camera from the outside, and only after it has been used can we see the quality of the explosion-proof surveillance camera. At the time of selection, the manufacturer will give some parameters of some explosion-proof cameras. Through these parameters, you can make certain judgments on the advantages and disadvantages of explosion-proof cameras. The so-called layman's excitement, the insider watch the door, for people who have just contacted the field of explosion-proof monitoring, it is also difficult to see the quality of explosion-proof cameras from that section of parameters.
White balance
White balance is a very important concept in the field of video camera. Through it, it can solve a series of problems in color reproduction and tone processing and improve the authenticity of the picture.
Scanning system
This refers to the scan format of the output image of the explosion-proof camera. The international scan format is usually PAL or NTSC. In China, it is usually a PAL system. The standard is 625 lines and 25 frames per second (25fps). The United States, Japan and other countries implement the NTSC system (29.97fps). Its size affects the playback speed of the picture.
Horizontal resolution
Horizontal resolution is a measure of image clarity and is usually expressed in lines (ie TV lines, TVL). One television line is 1.33 pixels when interlaced. In the explosion-proof monitor head, both the pixel value and the horizontal resolution are the main indicators for measuring the sharpness of the picture. Under normal circumstances, only the horizontal definition index exceeds 1080i (2 million pixels) and 720p (92 million pixels) can be called high-definition imaging.
Early explosion-proof cameras were mainly intrinsically safe and positive pressure type. The intrinsically safe explosion-proof camera is characterized by the intrinsically safe processing of the camera's circuit. The output or input of the electrical circuit is designed to be controlled so as not to generate enough energy to cause the hydrogen to ignite and explode so that it will not produce sparks during normal operation. , arc and high temperature, so as to avoid the explosion of explosive materials. The high structural unit cost of this type of explosion-proof monitor is the biggest drawback, and it is also not conducive to future upgrades. The positive pressure type is a common structure of the early US anti-explosive camera products. The maintenance during use is quite inconvenient. If it is not carefully maintained, the risk of detonation is considerable. This structure has basically been completely eliminated except for a few Taiwanese manufacturers still manufacturing.
When choosing an explosion-proof camera, it is difficult for us to look at the quality of the explosion-proof surveillance camera from the outside, and only after it has been used can we see the quality of the explosion-proof surveillance camera. At the time of selection, the manufacturer will give some parameters of some explosion-proof cameras. Through these parameters, you can make certain judgments on the advantages and disadvantages of explosion-proof cameras. The so-called layman's excitement, the insider watch the door, for people who have just contacted the field of explosion-proof monitoring, it is also difficult to see the quality of explosion-proof cameras from that section of parameters.
White balance
White balance is a very important concept in the field of video camera. Through it, it can solve a series of problems in color reproduction and tone processing and improve the authenticity of the picture.
Scanning system
This refers to the scan format of the output image of the explosion-proof camera. The international scan format is usually PAL or NTSC. In China, it is usually a PAL system. The standard is 625 lines and 25 frames per second (25fps). The United States, Japan and other countries implement the NTSC system (29.97fps). Its size affects the playback speed of the picture.
Horizontal resolution
Horizontal resolution is a measure of image clarity and is usually expressed in lines (ie TV lines, TVL). One television line is 1.33 pixels when interlaced. In the explosion-proof monitor head, both the pixel value and the horizontal resolution are the main indicators for measuring the sharpness of the picture. Under normal circumstances, only the horizontal definition index exceeds 1080i (2 million pixels) and 720p (92 million pixels) can be called high-definition imaging.
Early explosion-proof cameras were mainly intrinsically safe and positive pressure type. The intrinsically safe explosion-proof camera is characterized by the intrinsically safe processing of the camera's circuit. The output or input of the electrical circuit is designed to be controlled so as not to generate enough energy to cause the hydrogen to ignite and explode so that it will not produce sparks during normal operation. , arc and high temperature, so as to avoid the explosion of explosive materials. The high structural unit cost of this type of explosion-proof monitor is the biggest drawback, and it is also not conducive to future upgrades. The positive pressure type is a common structure of the early US anti-explosive camera products. The maintenance during use is quite inconvenient. If it is not carefully maintained, the risk of detonation is considerable. This structure has basically been completely eliminated except for a few Taiwanese manufacturers still manufacturing.
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