Infrared camera one common problem

Infrared camera has been very popular in recent years, mainly because of its low cost and convenient installation. However, there are always some problems we can't think of during use. The following are some of the problems we encountered in the production and sale of infrared waterproof cameras. Questions for your reference:

1. After a long period of unsatisfactory waterproof and cooling effects, there will be more or less soda (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 when the fashion machine is not Consider the temperature difference. 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 part housing will be insufficient, which will greatly reduce the service life of the camera.

2. The night vision effect is not ideal This phenomenon is mainly the effect of the flashlight or the distance is not enough and so on. In fact, this problem is mainly caused by the infrared light's angle and function. The infrared light used by our infrared cameras is also called the 850 infrared launch tube. The peak wavelength is 850, and the angle can be selected from 5-60 degrees. When the infrared launch tube angle The farther the illumination distance is, the more obvious is the effect of the flashlight. Conversely, the greater the angle, the less the effect of the flashlight, but the distance will be greatly reduced.

3. During the day, color reproduction was not enough. We did not know whether or not we noticed that the color of the infrared camera was more or less color cast in the daytime. The most direct reason was the problem of the camera filter. Generally, the infrared camera could use a certain ratio. The infrared light bimodal filter has the advantages of low cost, but because the natural light contains more infrared components, it will interfere with color reproduction when it enters the CCD, for example, the green plants turn gray and so on (there is a sunny outdoor The environment is particularly obvious).

4. Repeated jumps at critical points This is because some cameras, whether equipped with IRCUT dual filters or bimodal filters, cannot work stably under certain complicated lighting conditions, and because most manufacturers are Using a simple way such as a photoresistor sensor to control the operation of the IRCUT bimodal filter, the repeated transition of its critical point is not satisfactory. However, if the smart chip is used for control, its fuzzy logic capability can effectively control the working status of the IPCUT dual filter. In other words, many manufacturers are unwilling to invest in this.

5. Infrared light utilization and red storm problems What is a red storm? Redstorm is due to the fact that the emitted infrared light contains visible light components. Infrared lamps will inevitably cause these problems due to their principle.

6. Fogging and Frosting of Infrared Cameras The formation of fog and frost is caused by the condensation of saturated steam in the air, and is condensed into frost and fog due to the strong or weak cold environment. 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.

7. Infrared camera window glass cleaning The camera works in a rainy, snowy or dusty environment. The window glass of the protective cover is prone to dirt and obstructs the view of the camera.

8. Since the constant temperature of the infrared camera is equipped with an infrared lamp that generates a large amount of heat, after the infrared lamp is started, there will be heat concentration in the front part of the infrared camera during the entire working period (in 12 hours), that is, the front temperature in the cavity is high, such as Failure to heat evenly will affect the normal operation of the camera and other components.