Analysis of Infrared Camera Technology Structure Improvement Defense
2019-02-21 13:03:40
At present, the application of infrared cameras is very common, especially indoor dome cameras are gradually replaced by infrared dome cameras. The low requirement for indoor illumination at night is the main reason for its wide application. Outdoor infrared remote cameras are also being gradually adopted in outdoor areas, which also meets the requirements of international energy conservation and meets the requirements and trends of green environmental protection.
Infrared effect has improved significantly
The infrared effect of the infrared camera as a whole has been improved over the past, especially in the long-range infrared monitoring, the image sensitivity and sharpness have also been greatly improved, although there is still the problem of color cast in the color, but overall still Nice. Although the analog infrared camera is simpler and more useful than the network infrared camera in both real-time and use, it has to be slightly inferior in terms of definition and remote control. Especially in the low-intensity infrared light threshold control is even more not as good as network-type infrared cameras.
The products tested in this period mainly have the threshold value of infrared light on to start larger, and more manufacturers' products start infrared function under more than 10 LUX. In this illumination, most cameras can guarantee normal use. Status and color display can be done. Our technical analysis is mainly due to the lack of design of the photoresistor circuit. It is advisable to use a more high-performance photosensitive device to achieve sensitometric control. In particular, the test products provided by Granville and Hanbang Hi-Tech Co., Ltd., the infrared lamp threshold settings and functions were particularly good during this test. However, most manufacturers need further research and development improvements at this point.
Structural design cooling priority
The product is optimized for outdoor infrared camera architecture. In addition, the design of the outdoor one-machine unit of Usco International is also very unique. The design of the infrared lamp is also very good, especially the distance between the heat dissipation and the movement is very good for the heat dissipation of the summer machine. Its body and bracket are all designed to be easy to use and install. For the camera using the ring type infrared lamp module, there are certain defects, mainly reflected in the photosensitive interference of the lens, the light board by the number to enhance the illumination, but taking into account the distance and illumination intensity is difficult, heat is also a big problem . However, the use of high-power, long-distance, low-quantity infrared lamps is actually effective, such as the products of Viagra. The heat dissipation problem is also relatively simple and easy.
For the network infrared camera, its network performance is basically the same as the previous network high-definition camera, but most manufacturers' products basically do not improve the network camera's software functions, it should be added to the infrared light threshold value of the opening and setting a certain Software control is fine, but it's even more perfect to improve the automatic setting function. It can be imagined that there will be many infrared worlds for a project. It is very unrealistic to rely on artificially setting the infrared threshold because many factors such as considerations, seasons, weather, and the environment must be called by security managers at any time. It is very difficult to achieve, but it is an improvement compared to other manufacturers. There is a certain color difference in the color of the network infrared cameras of this evaluation, and the colors are basically lost in the infrared (except that the products of Viagra are automatically converted to black and white when the illumination is extremely low).
Direction of development
The future development direction of infrared cameras will be toward all-weather, long-distance, high-definition, high-performance, low-power and all-round development, but it must be improved in the following points:
Waterproof and cooling effect improvement. After the infrared camera is used for a long time, there will be more or less soda inside (this phenomenon is mainly concentrated in the northern regions). The main reason for this phenomenon is that the sealing effect of the shell is not enough and the temperature difference is not taken into account when the fashion machine. When the infrared lamp starts to work, a large amount of heat will be generated, and at the same time, the heat dissipation effect of the housing is not enough, which will greatly reduce the service life of the camera; the night vision effect is improved, especially the color is improved.
The infrared camera color will be more or less color cast in the daytime, this is the most direct cause of the camera filter problem, the general infrared camera uses a bimodal filter that can pass a certain proportion of infrared light, its advantage is the cost Low, but due to natural light contains more infrared components, when it enters the CCD will interfere with color reproduction; infrared light threshold value is turned on automatically set and adjusted and the critical point of repeated changes to improve. Should be in the software and hardware to further support and increase the auto-sensing function, for the infrared light can be turned on with the season, the environment, the weather and other conditions automatically set adjustments; service life is improved.
The short service life is a common problem of ordinary infrared cameras. Part of the electric energy consumed by the LED is converted into effective light energy, and part of it is converted into heat energy. This is unavoidable. When too much heat energy is generated, or if proper cooling measures are not taken, the temperature inside the unit rises too high, causing the LED to deteriorate too quickly due to excessive aging.
Infrared effect has improved significantly
The infrared effect of the infrared camera as a whole has been improved over the past, especially in the long-range infrared monitoring, the image sensitivity and sharpness have also been greatly improved, although there is still the problem of color cast in the color, but overall still Nice. Although the analog infrared camera is simpler and more useful than the network infrared camera in both real-time and use, it has to be slightly inferior in terms of definition and remote control. Especially in the low-intensity infrared light threshold control is even more not as good as network-type infrared cameras.
The products tested in this period mainly have the threshold value of infrared light on to start larger, and more manufacturers' products start infrared function under more than 10 LUX. In this illumination, most cameras can guarantee normal use. Status and color display can be done. Our technical analysis is mainly due to the lack of design of the photoresistor circuit. It is advisable to use a more high-performance photosensitive device to achieve sensitometric control. In particular, the test products provided by Granville and Hanbang Hi-Tech Co., Ltd., the infrared lamp threshold settings and functions were particularly good during this test. However, most manufacturers need further research and development improvements at this point.
Structural design cooling priority
The product is optimized for outdoor infrared camera architecture. In addition, the design of the outdoor one-machine unit of Usco International is also very unique. The design of the infrared lamp is also very good, especially the distance between the heat dissipation and the movement is very good for the heat dissipation of the summer machine. Its body and bracket are all designed to be easy to use and install. For the camera using the ring type infrared lamp module, there are certain defects, mainly reflected in the photosensitive interference of the lens, the light board by the number to enhance the illumination, but taking into account the distance and illumination intensity is difficult, heat is also a big problem . However, the use of high-power, long-distance, low-quantity infrared lamps is actually effective, such as the products of Viagra. The heat dissipation problem is also relatively simple and easy.
For the network infrared camera, its network performance is basically the same as the previous network high-definition camera, but most manufacturers' products basically do not improve the network camera's software functions, it should be added to the infrared light threshold value of the opening and setting a certain Software control is fine, but it's even more perfect to improve the automatic setting function. It can be imagined that there will be many infrared worlds for a project. It is very unrealistic to rely on artificially setting the infrared threshold because many factors such as considerations, seasons, weather, and the environment must be called by security managers at any time. It is very difficult to achieve, but it is an improvement compared to other manufacturers. There is a certain color difference in the color of the network infrared cameras of this evaluation, and the colors are basically lost in the infrared (except that the products of Viagra are automatically converted to black and white when the illumination is extremely low).
Direction of development
The future development direction of infrared cameras will be toward all-weather, long-distance, high-definition, high-performance, low-power and all-round development, but it must be improved in the following points:
Waterproof and cooling effect improvement. After the infrared camera is used for a long time, there will be more or less soda inside (this phenomenon is mainly concentrated in the northern regions). The main reason for this phenomenon is that the sealing effect of the shell is not enough and the temperature difference is not taken into account when the fashion machine. When the infrared lamp starts to work, a large amount of heat will be generated, and at the same time, the heat dissipation effect of the housing is not enough, which will greatly reduce the service life of the camera; the night vision effect is improved, especially the color is improved.
The infrared camera color will be more or less color cast in the daytime, this is the most direct cause of the camera filter problem, the general infrared camera uses a bimodal filter that can pass a certain proportion of infrared light, its advantage is the cost Low, but due to natural light contains more infrared components, when it enters the CCD will interfere with color reproduction; infrared light threshold value is turned on automatically set and adjusted and the critical point of repeated changes to improve. Should be in the software and hardware to further support and increase the auto-sensing function, for the infrared light can be turned on with the season, the environment, the weather and other conditions automatically set adjustments; service life is improved.
The short service life is a common problem of ordinary infrared cameras. Part of the electric energy consumed by the LED is converted into effective light energy, and part of it is converted into heat energy. This is unavoidable. When too much heat energy is generated, or if proper cooling measures are not taken, the temperature inside the unit rises too high, causing the LED to deteriorate too quickly due to excessive aging.
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