Infrared cameras have outstanding advantages such as long-range night vision, strong concealment, and stable performance in surveillance cameras, thus occupying most of the market in CCTV night vision surveillance. How to identify the advantages and disadvantages of the infrared hemisphere camera market? A good performance IR dome camera must have the following capabilities:
A. Infrared lamp operating conditions <br> <br> general, the infrared light radiated power is directly proportional to the forward current, but near maximum rated forward current, temperature of the device due to current consumption and heat Rising, so that the light emission power drops. Infrared diode current is too small, it will affect the radiated power to play, but the operating current is too large will affect its life, and even make the infrared diode burned. When the voltage crosses the positive threshold voltage (about 0.8V or so), the current begins to flow, and it is a very steep curve, indicating that its operating current requirements are very sensitive. Therefore, it is required that the operating current is accurate and stable, otherwise it will affect the performance and reliability of the radiation power. The increase in radiated power with the ambient temperature (increased ambient temperature due to its own heat generation) will reduce its radiated power. Infrared lamps are particularly long-range infrared lamps. Heat consumption is a problem that should be considered when designing and selecting. Therefore, the use of infrared light must have a good constant current power supply, good thermal design B. infrared light utilization and problems <br> <br> red storm red storm What is it? Redstorm is due to the fact that the emitted infrared light contains visible light components. Infrared lamps can be completely red-free (using 940-950nm wavelength infrared tube) or only a weak red storm.
Fogging mist C. frosting problem <br> <br> infrared camera, due to the formation of frost in the air saturated water vapor condensed cold, cold environment due to strong and weak, respectively condensed into frost and fog. In the work process of infrared cameras, especially outdoor cameras often cause fog or frost on the protective window glass due to seasonal changes, temperature difference between day and night, and rain and snow conditions. As a result, cameras cannot see objects and directly affect the monitoring results.
D. window glass clean <br> <br> infrared camera IR Dome Camera work in the rain and snow or dusty environment, the protective cover of the window glass is prone to dirt, causing the camera line of sight blocked. The solution is usually to add a wiper to the hood, and to control the wiper to clean the glass; another option is to use an invisible wiper window glass. Compared with ordinary window glass, invisible wiper window glass has the function of repelling water, dust, and snow.
E. infrared camera temperature <br> <br> Thanks to a large calorific infrared lamp, infrared lamp after starting, the entire working period (of 12 hours) in the front portion of the dome camera infrared heat is concentrated there, That is, the temperature at the front end of the cavity is too high. If the heat dissipation cannot be uniform, it will affect the normal operation of the camera and other components.
F. infrared camera closed thermostat <br> <br> addition, another advantage is the use of an automatic air conditioning infrared camera can be made completely closed without leaving any cooling holes, to prevent dust, moisture, corrosive gas The entry allows it to adapt to the harsh environment of large dust, such as large coal mines can also be used normally.
A. Infrared lamp operating conditions <br> <br> general, the infrared light radiated power is directly proportional to the forward current, but near maximum rated forward current, temperature of the device due to current consumption and heat Rising, so that the light emission power drops. Infrared diode current is too small, it will affect the radiated power to play, but the operating current is too large will affect its life, and even make the infrared diode burned. When the voltage crosses the positive threshold voltage (about 0.8V or so), the current begins to flow, and it is a very steep curve, indicating that its operating current requirements are very sensitive. Therefore, it is required that the operating current is accurate and stable, otherwise it will affect the performance and reliability of the radiation power. The increase in radiated power with the ambient temperature (increased ambient temperature due to its own heat generation) will reduce its radiated power. Infrared lamps are particularly long-range infrared lamps. Heat consumption is a problem that should be considered when designing and selecting. Therefore, the use of infrared light must have a good constant current power supply, good thermal design B. infrared light utilization and problems <br> <br> red storm red storm What is it? Redstorm is due to the fact that the emitted infrared light contains visible light components. Infrared lamps can be completely red-free (using 940-950nm wavelength infrared tube) or only a weak red storm.
Fogging mist C. frosting problem <br> <br> infrared camera, due to the formation of frost in the air saturated water vapor condensed cold, cold environment due to strong and weak, respectively condensed into frost and fog. In the work process of infrared cameras, especially outdoor cameras often cause fog or frost on the protective window glass due to seasonal changes, temperature difference between day and night, and rain and snow conditions. As a result, cameras cannot see objects and directly affect the monitoring results.
D. window glass clean <br> <br> infrared camera IR Dome Camera work in the rain and snow or dusty environment, the protective cover of the window glass is prone to dirt, causing the camera line of sight blocked. The solution is usually to add a wiper to the hood, and to control the wiper to clean the glass; another option is to use an invisible wiper window glass. Compared with ordinary window glass, invisible wiper window glass has the function of repelling water, dust, and snow.
E. infrared camera temperature <br> <br> Thanks to a large calorific infrared lamp, infrared lamp after starting, the entire working period (of 12 hours) in the front portion of the dome camera infrared heat is concentrated there, That is, the temperature at the front end of the cavity is too high. If the heat dissipation cannot be uniform, it will affect the normal operation of the camera and other components.
F. infrared camera closed thermostat <br> <br> addition, another advantage is the use of an automatic air conditioning infrared camera can be made completely closed without leaving any cooling holes, to prevent dust, moisture, corrosive gas The entry allows it to adapt to the harsh environment of large dust, such as large coal mines can also be used normally.
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