Hello everyone!
Today, let's talk about the main quality standards and purchase standards of thermal imaging searchers in detail.

Before making this problem clear, we first need to introduce two concepts of heat source: constant temperature heat source and variable temperature heat source. Constant temperature heat source refers to an object that remains constant shell temperature, for example, the body temperature of birds and mammals of thermostatic animals remains basically constant (36-42 degrees Celsius), which is not subject to changes in the temperature of the external environment, and continuously and stably emits heat sources; variable temperature heat source refers to the surface temperature of objects in the surrounding environment, such as stones, houses, trees, etc. Their surface temperature will change according to the change of ambient temperature (cold-blooded animals also belong to this category), obviously, they cannot continuously and stably emit heat sources.

After you understand these two concepts, think carefully about the purpose and function of thermal imaging products as search instruments? In fact, it is very simple, that is, to quickly detect and accurately locate the constant temperature heat source in the complicated variable temperature heat source environment at night, that is, the living constant temperature animal.

OK, now turn to the topic. Let's take a look at the imaging effects of two thermal imaging searchers in the video, the overall imaging effect of the hot search on the left gives people the feeling that it is a little white in the black pressure (the white point is the living rabbit we placed), although it is sensitive to the constant temperature heat source (rabbit), the constant temperature heat source has a good highlighting effect, but the recognition and imaging ability of the variable temperature heat source, that is, the environmental object, is almost zero. The surrounding area is completely black pressure, and no environmental object can be seen, it cannot provide any effective position reference for the imaged constant temperature heat source, that is to say, it can quickly find the constant temperature heat source but cannot accurately locate it;

let's look at the hot search on the right. Its overall imaging effect gives people the feeling of a vast expanse of white. It can also effectively image the constant temperature heat source, moreover, it can clearly image the variable temperature heat source, that is, environmental objects such as roads, houses, stones, etc., but it has exactly the same effect on the two heat sources, both of which are white and have no sense of hierarchy, the whole screen is vast and white, which will eventually lead to misjudgment of constant temperature heat source, which cannot clearly distinguish constant temperature heat source and variable temperature heat source, resulting in too many false targets, that is to say, it cannot effectively and quickly discover constant temperature heat source.

Therefore, the above two thermal imaging products are strictly not suitable for use as a field life heat source search instrument, and their imaging technology and effect still belong to traditional industrial thermal imaging, it is more suitable for the inspection of heating of indoor electrical circuit short circuit fault or the detection of heating fault of industrial equipment, etc. This imaging technology only requires the detection of heat source in a short distance and a small area, there is no need for large-area environmental object imaging to provide specific location reference.
Then, the question arises, is there a more suitable and perfect thermal imaging product that can detect quickly and accurately when used as a field search instrument, it highlights that the constant temperature heat source can effectively distinguish and image the surrounding variable temperature heat source, in this way, we can not only find the target of constant temperature heat source at the first time, but also accurately give the position reference through clear and hierarchical imaging of variable temperature heat source?