What aspects should be paid attention to when choosing a thermal imaging movement module?

The infrared thermal imaging core module is composed of two parts: an infrared thermal imaging core and a lens, and the most important is the infrared thermal imaging core. The infrared thermal imaging core is now mixed in the market, in order to help everyone choose yourself correctly The thermal imaging core module required, this article will focus on the issues that need to be paid attention to in the infrared thermal imaging core. First, the detector The detector is equivalent to the human brain. If a person does not have a brain, it is an empty shell. If the movement does not have a detector, the effect is the same. Infrared detectors are divided into refrigerated and uncooled types. The refrigerated infrared detectors are currently mainly used in high-end products. Military equipment is relatively expensive. This article only talks about uncooled infrared detectors. Uncooled infrared detectors can work at room temperature, with small size and low power consumption. Therefore, thermal imaging cameras are used in the civilian market and some military markets. All uncooled detectors are used. Thermal sensitive materials are an important bridge between sensing infrared radiation and output signals, and are the core components of infrared detectors. At present, the thermal sensitive materials of uncooled infrared detectors are mainly vanadium oxide (VOx) and amorphous silicon (α-Si). 1), vanadium oxide (VOx) In the early 1980s, Honeywell of the United States began to study vanadium oxide thin films in response to a military project, and developed an uncooled vanadium oxide microbolometer in the late 1980s. Vanadium oxide also has a variety of composite forms, such as VO2, V2O5, V2O3 and so on. Vanadium oxide material has a high TCR (about 2%/K～3%/K at room temperature). Its preparation technology has been mature after years of development, and it has been widely used in high-end microbolometer products. application. 2) Amorphous silicon (α-Si) The French Atomic Energy Commission began to study amorphous silicon detectors in 1992, and the technology is now very mature. The TCR of amorphous silicon is equivalent to VOx, and it is also a microbolometer material that has been widely used. Its advantage is that it is fully compatible with standard silicon processes and the preparation process is relatively simple. However, because amorphous silicon has an amorphous structure and exhibits higher 1/f noise than VOx, NETD is generally inferior to VOx materials. To Second, clarity The detector resolution of an infrared thermal imaging camera is an important indicator of clarity. The detector resolution directly affects the final imaging effect. The higher the resolution, the clearer the image, the clearer the object to see, and the better the user experience. good. The relatively high-end product pixels of civilian thermal imaging cameras are 640×512. The infrared pictures taken with thermal imaging cameras are clear and delicate, and objects the size of rabbits can be distinguished from 500 meters away; the pixels of mid-end thermal imaging cameras are 384× 288. This series of infrared thermal imaging cameras can accurately identify walking human bodies from 700 meters away. Infrared thermal imaging camera products with 1024×768 pixel level also perform well in the high-end civilian field. In addition, China's domestic infrared manufacturers continue to work hard, and have launched 1280×1024 megapixel infrared products, which shows the strength of domestic products. To Third, core technology You should remember that ZTE was banned in the United States not long ago. This is enough to see that the core technology is the lifeblood of a company, and it is also a necessary condition for the prosperity of a country. The pixel pitch of infrared thermal imaging detectors is the infrared thermal imaging industry. One of the core technologies. Infrared thermal imaging cameras continue to break new records in pixel pitch. The current mainstream is 17 micrometers, and it is advancing to 14 micrometers. Some Chinese manufacturers have developed 12-micron detectors that have reached the world's advanced level. I am really proud of being a Chinese! To Fourth, high frame rate Frame rate is also called FPS, which means the number of pictures displayed per second. The higher the frame rate, the more consistent the picture movement and the clearer the picture quality. The frame rate parameter is very important when infrared thermal imager is detecting in real time! For objects in motion, the higher the frame rate of the infrared thermal imager, the more consistent the picture and the better the observation effect. Especially for aerial photography, the infrared thermal imager with low frame rate is almost impossible to detect. To After foreign products are sold in China, there is a limit on the frame rate, which is generally limited to 9Hz. Everyone should be able to guess the purpose, which is for technical blockade. However, even under such severe conditions, our country has developed a detector with a high frame rate of 50Hz, so we must support domestic production and believe in Chinese technology. To Fifth, look at material selection, quality, and quality control capabilities Professional thermal imaging camera manufacturers have a complete industrial chain, integrating quality control capabilities from integrated circuits, sensors, detectors, core components, and application terminals. Thermal imaging cameras are high-end precision instruments, and thermal imaging equipment has military The quality assurance system is reliable. Regular thermal imaging products must be strictly inspected for imaging in the whole temperature zone, and many small factories do not even have high and low temperature detection. The infrared thermal imaging core module produced by the professional thermal imaging camera manufacturer supports a variety of models of lenses to choose from, and can even be customized, which is impossible for many small factories. To Sixth, service guarantee system Service guarantee is also a very important piece. If there is a problem with the device itself or when there is a use problem, you need to ask the after-sales customer service, and it can be solved quickly, reducing the user's worries. Based on the above six points, we can correctly purchase the infrared thermal imaging core module that suits us. Many times we think that foreign brands are good, but when you look back and carefully look at the domestic manufacturers, you will find that the original domestic Manufacturers are already among the best in these industries, and in some places they have even surpassed many foreign manufacturers.