Ireeda’s In-Depth Knowledge About Infrared Detectors
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An infrared thermal imaging camera is a device that can detect the infrared radiation of a target and convert the physical temperature distribution image of the target into a video image through photoelectric conversion, electrical signal processing and other means.
Infrared imaging involves many aspects in modern life and has a wide range of applications.
According to the working principle, infrared detectors can be divided into two categories: uncooled detectors and refrigerated detectors.
Cooled detectors are mainly used in high-end fields such as aerospace and ships, mainly for military products; uncooled flat detectors have lower NETD indicators, but are more widely used in military and civilian fields. Compared with common cooled infrared thermal imaging cameras, uncooled thermal imaging cameras have more advantages in service life, size, price and power consumption. However, compared with uncooled thermal imaging cameras, cooled thermal imaging cameras have It has more advantages in terms of accuracy and reliability. IREEDA will explain them one by one below.
1.Usage rateThe usage rate of the refrigerated infrared thermal imaging camera is closely related to its own refrigerator. The working time of the refrigerator is directly related to the service life of the infrared thermal imaging camera. Relatively speaking, the service life of the uncooled outdoor thermal imaging camera will be longer, but measurement accuracy will also decrease due to aging of components.
2. VolumeSince the cooled infrared thermal imaging camera requires a refrigerator to work together, the cooled infrared thermal imaging camera is larger than the uncooled type.
3. Price
Generally speaking, the price of cooled infrared thermal imaging cameras is high, while the price of non-cooled ones is relatively low
4. Power consumption
Cooled infrared thermal imaging cameras require a refrigerator to cool down when working, so they consume more energy. Compared with uncooled infrared thermal imaging cameras, the power consumption is greater.
When the refrigerated infrared thermal imager works, the refrigerator first works to reduce its own temperature, so that when detecting other objects, it has higher sensitivity, higher accuracy, smaller error, and wider detection temperature range. Uncooled infrared thermal imaging cameras are inferior in these aspects, especially the non-uniformity of the uncooled infrared focal plane array, which has a greater impact on measurement errors.5. Sensitivity, accuracy, and error
6.Reliability
Cooled infrared thermal imaging cameras have high accuracy, small errors and high sensitivity, making their detection results more reliable.
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