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Infrared many of the sun’s rays are not visible light, also known as infrared thermal radiation. Solar spectrum in the red on the outside must exist invisible light, which is infrared. Can also be used as transmission media. Infrared wavelengths in the solar spectrum than visible light, the wavelength of 0.75 ~ 1000μm. Infrared can be divided into three parts, namely, near-infrared wavelength of 0.75 ~ 1.50μm; in the infrared wavelength of 1.50 ~ 6.0μm; far-infrared wavelengths between 6.0 ~ l000μm. Red light outside the spectrum is called infrared. Infrared wavelengths than visible light, which is the shortest wavelength of 0.75 ~ 3μm light of the near-infrared, near-infrared (Near Infra Red, NIR) reflectance spectra of different characteristics, materials shed on the slide after the near-infrared radiation confirm the reflection of light, and spectral analysis of various materials according to the preset information, to determine whether the for heterochromatic matter, issue the corresponding command, air guns to carry out a job, the bad things removed. NIR near-infrared technology, the introduction of color sorters sorting performance has been more broad application, sorting the transparent body, plastic and non-metallic particles, and different colors, different sizes, different shapes, and even different physical characteristics of particulate matter . If the application of the color sorting machine is seen as a revolution in the development of productive forces, then the introduction of near-infrared color sorter will the winner of this revolution.
[Infrared Device]
Infrared light source
1, the infrared radiation
Resistance wire wrapped around the ceramic rods, power, resistance wire heat, cover in the resistance wire, carbon rod temperature rise (typically no more than 500 ° C) to launch the long-wave infrared.
Infrared in recent years in the military, satellite, and industrial, health, research and other aspects of the increasingly widespread. Infrared perspective and night vision is the use of infrared nature. In front of night vision because the human eye can not see infrared, and specially designed cameras and night vision, but specifically to accept infrared, so there will be less than human vision, the camera was able to shoot things, because virtually everywhere infrared in terms of infrared cameras and night vision bright.
Perspective is the use of infrared wavelengths longer than visible light can pass through some of the visible light can not pass the fabric (such as blending and nylon), so the choice of filter, you can get the fabric behind the image.
Broadest sense, the sensor is an able physical or chemical amount of electrical signals into easy-to-use devices, infrared sensors, is one of them. With the development of modern science and technology, the infrared sensor applications has been very widely in the field of color sorters use infrared sensors for material overlap in the color selected after the effective perspective on the removed material effective sorting.
2, the infrared sensor in the camera - night vision and perspective function
Infrared sensors, night vision state, the digital camera will send the people to the naked eye can not see infrared light to illuminate the object being photographed, turn off the infrared filter, no longer blocking the infrared rays enter the CCD, infrared after reflected from objects into the lens imaging, when we see the image into the infrared reflectance, rather than visible light reflection into the image, that is, at this time can be taken to the naked eye in dark environments (material overlap) less than the image.
Infrared night vision function, able to shoot in total darkness, even the naked eye can not distinguish clearly objects, can now also filmed. The features of this night vision shooting is in no light conditions, but due to the use of infrared photo shoot, can not restore color shooting out of the screen is a monochrome image will turn green.
Use of infrared sensors and CCD sensor
Has the following advantages:
Two different types of sensors at the same time acting on the materials to be elected, the election of other more
Choose different ways by different imaging principle of the sensor, according to the different materials, ways to diversify
Can be part of the sorting different material objects
The technology is more mature, easy to operate user.
Disadvantages:
Channel color sorting machine, even if the infrared sensor discrimination was selected objects, but the time difference between the falling bodies of different materials, so even finding the target, it is difficult removed, are often the choice is difficult to distinguish, can not have both
High degree of transparency of the foreign body, such as thin glass can not determine, there are blind spots
High cost of equipment
Contact Person: Mr. Roy Guo
Tel: +86-551-63714288 , 13865971478
Fax: 86-551-63475038