Talking about Common Problems and Solution of Infrared Camera
In the security television monitoring system, with the improvement of people's safety awareness, the need for 24-hour continuous monitoring of television monitoring in important venues and the maturity of infrared imaging technology, the use of infrared waterproof cameras has become increasingly high and has gradually developed into a Trends.
Infrared camera one common problem and solution
Infrared camera is popular with everyone, mainly because of its low cost and convenient installation. However, in the course of using it, we will encounter some problems that we could not think of. The following is the production and sales of infrared waterproof The problems encountered in the camera are for your reference:
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 lamp's angle and function. The infrared lamp used by our infrared camera is also called the 850 infrared emission tube. The peak wavelength is 850, and the angle can be selected from 5-60 degrees. When the infrared emission tube angle is more The farther away from the hour, the more obvious the effect of the flashlight. Conversely, the greater the angle, the less the effect of the flashlight, but the distance will be greatly reduced. To solve this problem is to see what kind of effect and what kind of cost the manufacturer wants to pursue. Of course, the power and price of infrared emission lamps are directly proportional to each other. How many lamps are generally said 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 will be more or less color cast during the day. The most direct reason is the problem of the camera filter. Generally, the infrared one camera can use A certain proportion of infrared light bimodal filter has the advantage of low cost, but because natural light contains more infrared components, when it enters the CCD, it will interfere with color reproduction, such as the green plants become gray and so on (there are sunshine The outdoor environment is particularly noticeable). 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.
Infrared camera one common problem and solution
Infrared camera is popular with everyone, mainly because of its low cost and convenient installation. However, in the course of using it, we will encounter some problems that we could not think of. The following is the production and sales of infrared waterproof The problems encountered in the camera are for your reference:
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 lamp's angle and function. The infrared lamp used by our infrared camera is also called the 850 infrared emission tube. The peak wavelength is 850, and the angle can be selected from 5-60 degrees. When the infrared emission tube angle is more The farther away from the hour, the more obvious the effect of the flashlight. Conversely, the greater the angle, the less the effect of the flashlight, but the distance will be greatly reduced. To solve this problem is to see what kind of effect and what kind of cost the manufacturer wants to pursue. Of course, the power and price of infrared emission lamps are directly proportional to each other. How many lamps are generally said 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 will be more or less color cast during the day. The most direct reason is the problem of the camera filter. Generally, the infrared one camera can use A certain proportion of infrared light bimodal filter has the advantage of low cost, but because natural light contains more infrared components, when it enters the CCD, it will interfere with color reproduction, such as the green plants become gray and so on (there are sunshine The outdoor environment is particularly noticeable). 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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