Infrared camera manufacturers are in line with China's special market needs. According to the author's understanding, foreign markets basically do not produce infrared cameras . The reason for this is that the infrared camera itself is a high-temperature product and is a potential risk factor in most monitoring environments, such as coal mine monitoring, industrial monitoring and so on. The second is that the low-price competition of infrared cameras has seriously affected the product life. According to investigations, ordinary infrared cameras have a service life of less than one year. The short service life of the product may be more profitable for the infrared camera manufacturer, but it is for the end user to harm the interests of the consumer. The infrared camera market is irresistible, so each infrared camera manufacturers are constantly developing more cost-effective products. Foreign camera brands such as Samsung and Sony have also introduced infrared cameras to adapt to localization in China. However, in order to solve the drawbacks of infrared cameras, foreign countries have developed ultra-low illumination cameras. China can also develop more advantageous infrared camera products, make up for its own functional defects, but also can solve security risks.
At present, infrared cameras have a high market share or LED infrared cameras, but the vast majority of products can only reach within 100 meters. In terms of applications, infrared cameras are mainly used in civilian applications. Infrared cameras have evolved over the years and the market is constantly updating. In the recent camera market, laser night vision cameras have emerged that can observe people and objects directly from the monitor as well as the daytime without visible light.
Laser night vision camera technology is different from thermal infrared imaging technology and low light night vision technology. Thermal infrared imaging technology can only see the thermal profile of people and objects, and can not see the true face of the object. Low-light night vision requires a certain amount of moonlight, starlight, and ambient light to see the object. If there is no light, nothing can be seen. Although infrared light-assisted illumination can also see the target, it cannot overcome the infrared light storm, it cannot conceal observation, and it is easy to self-exposure the target. The image is interfered by light waves, and the visual effect and clarity like the black light night vision camera cannot be achieved. degree.
Since last year, infrared camera manufacturers have begun to introduce a night vision camera called white light, which is a product corresponding to infrared cameras. According to reports, the advantage of a white light camera is that it can display color images at night, unlike infrared cameras that can only shoot black and white images. White-light night vision cameras have dimming technology. The intensity of light is determined by the perimeter environment. The darker the surrounding environment, the stronger the light. This kind of white light camera is more suitable for remote factories with few human traces, and its conspicuous light can also play a deterrent role. However, the actual effects of white light cameras and product quality still need to be tested in the market.
　 Development of infrared camera manufacturers take a very long process, infrared cameras on some of the features has its advantages, but the infrared camera manufacturers can not be at the expense of the cost of the product life, how to solve the short life of infrared cameras, heat dissipation is poor Infrared camera manufacturers must solve the proposition in the future development of infrared cameras. It is hoped that our security products will bring more practical functions to users under the premise of ensuring product quality.
Because infrared cameras have the outstanding advantages of night vision, concealment, and price, they have been favored by users. However, the disadvantages revealed in the application process have become more and more prominent. There are several aspects that affect and restrict the drawbacks of infrared cameras:
　　 1, Waterproof and poor heat dissipation
After the infrared camera is used for a long time, there will be more or less soda inside (this phenomenon is mainly concentrated in the northern region). 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 account when the fashion machine. When the infrared lamp starts to work, a large amount of heat will be generated, and at the same time, since the heat dissipation effect of the housing is insufficient, the service life of the camera will be greatly reduced.
　　 2, Night vision is not ideal
This phenomenon is mainly manifested in the effect of the flashlight or the distance is not enough, which is mainly due to the angle and function of the infrared light. Now infrared cameras use infrared light, also known as the 850 infrared emission tube, the peak wavelength of 850 , the angle can be selected from 5-60 degrees, when the infrared transmission tube is smaller the longer the distance of irradiation, the effect of the flashlight is more obvious, on the contrary, The greater the angle, there is no flashlight effect, but the distance is greatly reduced.
　　 3 , color distortion
Infrared camera color will be more or less color cast during the day, this direct cause is the problem of camera filters, general infrared cameras use a bimodal filter that can pass a certain proportion of infrared light, its advantage is low cost However, due to natural light containing more infrared components, it will interfere with color reproduction when it enters the CCD , such as the green plants become gray and so on (especially in sunny outdoor environments).
　　 4. Repeated transitions of critical points
This is due to the fact that some cameras, whether equipped with IRCUT dual filters or bimodal filters, 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.
　　 5 short service life
The short service life is a common problem of ordinary infrared cameras . Part of the electric energy consumed by the LED is converted into effective light energy, and some of it is converted into heat energy. This is unavoidable. The problem is that the generated heat energy must be controlled and disposed of reasonably. When too much heat energy is generated, or if proper cooling measures are not taken, the temperature inside the unit rises too high, causing the LED 's excessive aging to cause the irradiation distance to drop too quickly. In particular, some producers do not have a healthy business philosophy and unilaterally pursue the performance at the time of delivery, ignoring the service life of the product. If they do not solve the problem of excessive heat generation and temperature rise, they are desperately pursuing brightness and distance. An important factor in the rapid drop in service life.
　　 The many disadvantages exposed by infrared cameras also more or less restrict their own development. Insiders believe that the infrared camera's "fire" this year is different from previous "fire." The security market has entered the era of meager profits. In the case of a sharp rise in raw materials, infrared camera manufacturers have to reduce costs under the premise of ensuring profits, which also leads to the product quality can not be guaranteed, and then the product repair rate gradually increased.
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