Views: 0 Author: Site Editor Publish Time: 2023-05-15 Origin: Site
First of all, it is necessary to determine the pixel level of the infrared thermal imaging camera purchased, and the level of most infrared thermal imaging camera is related to the pixel. The relatively high-end product pixels of civilian thermal imaging cameras are 640*480. The infrared pictures taken by this high-end thermal imaging camera are clear and delicate, and the minimum size measured at 12 meters is 0.5*0.5cm; The pixel is 320*240, and the minimum size measured at 12 meters is 1*1cm; the pixel of the low-end infrared thermal imaging camera is 160*120, and the minimum size measured at 12 meters is 2*2cm. The higher the visible pixels, the smaller the minimum size of the target that can be photographed.
Determine the temperature measurement range according to the temperature range of the measured object to select an infrared thermal imaging camera with a suitable temperature range. Most of the thermal imaging cameras currently on the market are divided into several temperature ranges, such as -40-120°C and 0-500°C. It is not that the larger the span of the temperature range, the better. The smaller the span of the temperature range, the more accurate the temperature measurement will be. In addition, when the general infrared thermal imaging camera needs to measure objects above 500°C, it needs to be equipped with a corresponding high-temperature lens.
The temperature resolution reflects the temperature sensitivity of an infrared thermal imaging camera. The smaller the temperature resolution, the more obvious the infrared thermal imaging camera perceives the temperature change. When choosing, try to choose a product with a small value of this parameter. The main purpose of the infrared thermal imaging camera to test the measured object is to find out the temperature fault point through the temperature difference. It is not very meaningful to measure the temperature value of a single point. It is mainly to find the relative hot spot through the temperature difference, which plays the role of pre-maintenance. .
To put it simply, the smaller the spatial resolution value is, the higher the spatial resolution is, the more accurate the temperature measurement is, and the smaller the spatial resolution value is, the smallest target to be tested can cover the pixels of the infrared thermal imaging camera, and the temperature of the test is the temperature of the measured target. real temperature.
If the spatial resolution value is larger, the spatial resolution is lower, and the smallest target to be tested cannot completely cover the pixels of the infrared thermal imaging camera, and the test target will be affected by its environmental radiation. The test temperature is the temperature of the measured target and its surroundings. The average temperature of , the value is not accurate enough.
The core component of the infrared thermal imaging camera is the infrared detector. At present, there are mainly two kinds of detectors, namely vanadium oxide crystal and polysilicon detectors. The main advantage of vanadium oxide detectors is the temperature measurement field of view:
The MFOV (Measurement Field of View) is 1, and the temperature measurement is accurate to 1 pixel.
Amorphous Silicon (polycrystalline silicon) sensor, MFOV is 9, that is, the temperature of each point is obtained based on the average of 3×3=9 pixels. The vanadium oxide detector has good temperature stability, long life and small temperature drift.
If the infrared image and the visible light image are combined and displayed, a lot of work will be reduced. The unknown hotspots in the infrared image can be judged based on the visible light image, and the automatic report generation will also greatly reduce the operation time.
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Six elements of choosing an infrared thermal imaging camera 1. PixelsFirst of all, it is necessary to determine the pixel level of the infrared thermal imaging camera purchased, and the level of most infrared thermal imaging camera is related to the pixel. The relatively high-end product pixels of civilian thermal imaging cameras are 640*480.
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Because thermal imaging is a passive, non-contact detection and identification of targets, it is concealed and undetectable, thus making long range thermal camera safer and more effective for operators. Apart from that, do you know what other advantages thermal scope has to offer? Let's take a look at them in detail. Here are some answers.
The thermal camera uses an infra-red detector and an optical imaging objective to receive a graphic representation of the infra-red radiation energy distribution of the target to be measured, which is reflected on the photosensitive element of the infra-red detector, thus obtaining an infra-red thermal image that corresponds to the heat distribution field on the surface of the object. This thermal image corresponds to the heat distribution field on the surface of the object. Next, let's take a look at the structure and applications of the thermal camera. Here are some answers.
The thermal camera is used in a wide range of applications, and as infrared technology continues to develop and become more widespread, new applications are constantly being developed. Infrared technology is used in both civil and military applications, initially in the military and gradually in the
In layman's terms, the thermal scope is the conversion of invisible infrared energy emitted by an object into a visible thermal image. The different colors on the thermal image represent the different temperatures of the object being measured. Let's take a look at the introduction to thermal scope.
The thermal camera is now divided into two main categories, portable and fixed. They are devices that collect images and infrared data, which are then transferred to a computer and analyzed by specialist software to produce the infrared images we see. Depending on the lens, we can see different infra-red images. The software can also be set up to give us the image we want. For example, the infrared night vision camera does not see red and yellow, but black and white. Let's take a look at the thermal camera and how it works.
Originally used in the military sector, the thermal scope has recently been extended to the civilian and industrial sectors. Some developed countries in Europe and the USA have been exploring the use of the thermal scope in various fields since the 1970s. After decades of continuous development, the thermal scope has evolved from a bulky machine to a lightweight, portable device for field testing. Let's take a look at the definition and advantages of the thermal scope. Here are some answers.