Infrared camera has been very popular in recent years, mainly due to low cost, easy installation, but in the use of the process will always encounter some problems that we can not think of, the following will introduce the common problem and solution for the next infrared one camera :
1. The waterproof and heat dissipation effects are not ideal:
After a long period of use, 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 the temperature difference is not taken into consideration when the machine is used. When the infrared lamp starts working, 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. In order to solve this problem, it may be considered that the camera housing is made of a plurality of wire troughs. It is good for heat dissipation.
2. The night vision effect is not ideal:
The main manifestation of this phenomenon is the effect of the flashlight or the distance is not enough. 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 smaller the farther the irradiation distance, the more obvious the effect of the flashlight. Conversely, the greater the angle, there will be no flashlight effect, but the distance will be greatly reduced. To solve this problem is to look at what kind of effect manufacturers want to pursue and what kind of cost Of course, the power and price of infrared emission lamps are directly proportional to each other. How many lamps are generally stated by some manufacturers when they tell customers? How much can you reach? But we may have overlooked one issue - the power and diameter of infrared lamps. When the appearance and size of an infrared lamp are the same, there is no way to know the power. The only way possible is to have a physical test. From my personal experience in the production of infrared cameras to solve this problem, I used a multi-angle infrared lamp hybrid installation, so that resources can be fully utilized and can be taken into account in the distance.
3. Insufficient color reproduction during the day:
We do not know if we noticed that the color of the infrared camera would be more or less color cast in the daytime. The most direct reason is the problem of the camera filter. Generally, the infrared one camera uses a pair of infrared rays that can transmit a certain proportion of infrared rays. Peak filter, its advantage is low cost, but because natural light contains more infrared components, when it enters the CCD will interfere with color reproduction, such as the green plants become gray and so on (especially the sunny outdoor environment is particularly obvious) . The use of the IPCUT dual filter effectively solves this problem. The IRCUT dual filter consists of an infrared cutoff filter and a full-spectrum optical glass. When the daylight is sufficient, the IR cut filter works, and the CCD is restored. With real colors, when the nighttime light is insufficient, the infrared cut filter automatically moves away, and the full-spectrum optical glass starts to work, making the CCD make full use of all the light, thereby greatly improving the infrared performance.
4. Repeated transitions of critical points:
This is because some cameras, whether equipped with IRCUT dual filter or bimodal filter, cannot work stably under certain complicated lighting conditions, and because most manufacturers use simple resistors such as photoresistors. Sensors and other methods to control the IRCUT bimodal filter's working state, the critical point of repeated changes will not be 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.
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