After infrared technology was discovered by British astronomer Herschel in 1800, more and more scientists were studying how to apply it in various occasions. The application of active infrared camera technology in security monitoring has been rapid for more than 20 years. The development of technology is more mature. Infrared cameras are developing and growing at lightning speed, and the types of products are constantly diversifying, and the application fields are being further expanded.
Features <br> <br> infrared camera infrared cameras are generally divided into two categories, one is analog infrared cameras, one is an infrared network camera. But no matter what kind of infrared camera has the same characteristics, its main manifestations are: (1) different characteristics of infrared light source; (2) choice of low-light camera. Only combining these two points with an infrared camera can be an excellent product.
For different use occasions, different infrared light sources and distances must be selected. The main features of the infrared light source are as follows: Infrared light is an invisible light with a wavelength greater than 780 nm. There are two types of infrared lights currently used in infrared cameras.
1. Use infrared LED or LED array to generate infrared light. The device generates infrared light by recombination of electrons and holes in gallium arsenide (GaAs) semiconductors;
2, using infrared laser diode LD, can also be used as infrared light source. However, it is required to excite or pump the electrons in the lower energy state to the higher energy state, and to maintain the stimulated radiant infrared light through a large number of particle distribution inversions and resonances.
The first one is an infrared lamp composed of an array of semiconductor gallium arsenide light-emitting diodes, and in particular, an array-type integrated light-emitting chip LEDArray developed and produced using a new technology. The LED-Array has an optical output of 800mW-1000mw, which has become a replacement for ordinary LEDs. The LED-Array has a luminous half-power angle of 10-120° (variable angle). Since the LED-Array is a highly integrated LED and has a volume of only one penny coin, its lifetime is 50,000 hours.
The second is the use of an infrared laser diode LD. For the monitoring of ultra-long-distance scenes above 1km, it is still necessary to select an infrared LD light source. Because the semiconductor laser has higher brightness and directional characteristics than the LED.
Infrared camera installation and commissioning <br> <br> a Installation Notes 1. debugging infrared lamp must be at night. The infrared beam illumination position is adjusted at night through an imaging device such as a monitor. And can effectively adjust the lens aperture settings.
2. The infrared light can't directly face the camera. The infrared light seen by the camera is the same as the sunlight that humans see.
3. The infrared lamp is not necessarily installed in the same position as the camera. If the camera is far away from the illuminated object, you may consider installing the infrared lamp between the two. The best way to install in the same location is to install the infrared lamp and the camera in an overlapping manner.
4. The installation height of the infrared lamp should not exceed 4 meters, too high will affect the reflectivity of light. The angle should be from the top down angle of 20 degrees, and the elevation angle is too large to reflect.
5. The working indicator of the infrared lamp must be guaranteed (see the product specification for details). For example, the power of the infrared lamp must be higher than the working power of the infrared lamp itself.
6. The user must first read the instruction manual carefully when using the infrared light, especially the precautions to ensure personal safety. Check whether the supporting aspects mentioned in the previous section meet the requirements. Whether the influencing factors that should be taken into consideration should be taken into consideration, if not meet the requirements, the equipment used can be adjusted in time.
Second, the use of matters needing attention Angle problem: First of all, the use of large-angle infrared light with a small viewing angle of the lens, there is a waste of light. Second, not the infrared light emission point of view, the better the screen effect.
The problem of the amount of light passing: the relative aperture determines the light transmission capability of the lens, and the relative light flux of the lens whose aperture is f1.0 is four times that of the lens of the relative aperture f2.0. The same camera and infrared light are used together with the above two types. Lens, infrared action distance can be doubled. Large-aperture lens in the infrared monitoring, the conventional lens is four to ten times better, it stands to reason that infrared night vision monitoring must be supporting products. But due to high costs, technical difficulties, Most infrared product manufacturers do not have the ability to supply.
Focus shift problem: visible light and infrared light due to different wavelengths, the imaging focus is not on a plane, resulting in clear images under visible light conditions during the day, and blurred under nighttime infrared light conditions, or clear images under nighttime infrared light conditions, daytime visible light conditions Under the image is blurred. It can be solved in three ways. First, the use of automatic focusing integrated camera; Second, the use of special focus does not shift the lens; Third, the use of professional adjustment tools, under the existing lens conditions can also be achieved Does not shift the color problem: all black and white cameras are sensitive to infrared light. Infrared light is a stray light in the visible light conditions for color cameras, will reduce the color camera resolution and color reproduction, color camera filter The film is to prevent infrared rays from participating in imaging. To make the color camera sense infrared light, there are two methods. First, switch the filter and block the infrared light from entering under the visible light condition; remove the filter under the condition of no visible light and let the infrared light. Into, this scheme gets good image quality but high cost and switching machine The structure will lead to a certain failure rate. Second, a specific infrared channel is opened on the filter, allowing the infrared light with the same wavelength as the infrared light to come in. This method does not increase the cost, but the color reproduction is slightly worse.
How far can infrared night vision go? When the technology arrives home, an infrared night vision system over 100 meters is not a problem. When technology arrives at home, it means that infrared light technology, infrared sensor camera technology and infrared sensor lens technology must be mastered at the same time. All three are indispensable. The distance has been more than 500 meters, but the cost is relatively high, and the civilian market is still relatively limited.
Features <br> <br> infrared camera infrared cameras are generally divided into two categories, one is analog infrared cameras, one is an infrared network camera. But no matter what kind of infrared camera has the same characteristics, its main manifestations are: (1) different characteristics of infrared light source; (2) choice of low-light camera. Only combining these two points with an infrared camera can be an excellent product.
For different use occasions, different infrared light sources and distances must be selected. The main features of the infrared light source are as follows: Infrared light is an invisible light with a wavelength greater than 780 nm. There are two types of infrared lights currently used in infrared cameras.
1. Use infrared LED or LED array to generate infrared light. The device generates infrared light by recombination of electrons and holes in gallium arsenide (GaAs) semiconductors;
2, using infrared laser diode LD, can also be used as infrared light source. However, it is required to excite or pump the electrons in the lower energy state to the higher energy state, and to maintain the stimulated radiant infrared light through a large number of particle distribution inversions and resonances.
The first one is an infrared lamp composed of an array of semiconductor gallium arsenide light-emitting diodes, and in particular, an array-type integrated light-emitting chip LEDArray developed and produced using a new technology. The LED-Array has an optical output of 800mW-1000mw, which has become a replacement for ordinary LEDs. The LED-Array has a luminous half-power angle of 10-120° (variable angle). Since the LED-Array is a highly integrated LED and has a volume of only one penny coin, its lifetime is 50,000 hours.
The second is the use of an infrared laser diode LD. For the monitoring of ultra-long-distance scenes above 1km, it is still necessary to select an infrared LD light source. Because the semiconductor laser has higher brightness and directional characteristics than the LED.
Infrared camera installation and commissioning <br> <br> a Installation Notes 1. debugging infrared lamp must be at night. The infrared beam illumination position is adjusted at night through an imaging device such as a monitor. And can effectively adjust the lens aperture settings.
2. The infrared light can't directly face the camera. The infrared light seen by the camera is the same as the sunlight that humans see.
3. The infrared lamp is not necessarily installed in the same position as the camera. If the camera is far away from the illuminated object, you may consider installing the infrared lamp between the two. The best way to install in the same location is to install the infrared lamp and the camera in an overlapping manner.
4. The installation height of the infrared lamp should not exceed 4 meters, too high will affect the reflectivity of light. The angle should be from the top down angle of 20 degrees, and the elevation angle is too large to reflect.
5. The working indicator of the infrared lamp must be guaranteed (see the product specification for details). For example, the power of the infrared lamp must be higher than the working power of the infrared lamp itself.
6. The user must first read the instruction manual carefully when using the infrared light, especially the precautions to ensure personal safety. Check whether the supporting aspects mentioned in the previous section meet the requirements. Whether the influencing factors that should be taken into consideration should be taken into consideration, if not meet the requirements, the equipment used can be adjusted in time.
Second, the use of matters needing attention Angle problem: First of all, the use of large-angle infrared light with a small viewing angle of the lens, there is a waste of light. Second, not the infrared light emission point of view, the better the screen effect.
The problem of the amount of light passing: the relative aperture determines the light transmission capability of the lens, and the relative light flux of the lens whose aperture is f1.0 is four times that of the lens of the relative aperture f2.0. The same camera and infrared light are used together with the above two types. Lens, infrared action distance can be doubled. Large-aperture lens in the infrared monitoring, the conventional lens is four to ten times better, it stands to reason that infrared night vision monitoring must be supporting products. But due to high costs, technical difficulties, Most infrared product manufacturers do not have the ability to supply.
Focus shift problem: visible light and infrared light due to different wavelengths, the imaging focus is not on a plane, resulting in clear images under visible light conditions during the day, and blurred under nighttime infrared light conditions, or clear images under nighttime infrared light conditions, daytime visible light conditions Under the image is blurred. It can be solved in three ways. First, the use of automatic focusing integrated camera; Second, the use of special focus does not shift the lens; Third, the use of professional adjustment tools, under the existing lens conditions can also be achieved Does not shift the color problem: all black and white cameras are sensitive to infrared light. Infrared light is a stray light in the visible light conditions for color cameras, will reduce the color camera resolution and color reproduction, color camera filter The film is to prevent infrared rays from participating in imaging. To make the color camera sense infrared light, there are two methods. First, switch the filter and block the infrared light from entering under the visible light condition; remove the filter under the condition of no visible light and let the infrared light. Into, this scheme gets good image quality but high cost and switching machine The structure will lead to a certain failure rate. Second, a specific infrared channel is opened on the filter, allowing the infrared light with the same wavelength as the infrared light to come in. This method does not increase the cost, but the color reproduction is slightly worse.
How far can infrared night vision go? When the technology arrives home, an infrared night vision system over 100 meters is not a problem. When technology arrives at home, it means that infrared light technology, infrared sensor camera technology and infrared sensor lens technology must be mastered at the same time. All three are indispensable. The distance has been more than 500 meters, but the cost is relatively high, and the civilian market is still relatively limited.
The machine monitor has the functions to display various items and the functions to select modes and electric parts.
The machine monitor has a CPU (Central Pro-cessing Unit) in it to process, display, and out-put the information.
The monitor display employs an LCD (LiquidCrystal Display). The switches are flat sheet switches.
Monitor Panel,Monitor Ips Panel,Excavator Part Monitor Panel,Excavator Monitor Panel
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