Thermal infrared imager and continuous automatic focusing method thereof

Abstract

The invention provides a thermal infrared imager and a continuous automatic focusing method thereof. The continuous automatic focusing method comprises the following steps that a laser ranging assembly measures the real-time object distance of a target object; the control device obtains the real-time object distance and compares the real-time object distance with data of a database, the database comprises relation data of a preset object distance and the step number of the stepping motor, and the control device obtains the step number of the stepping motor corresponding to the real-time objectdistance; the control device drives the stepping motor to rotate by the corresponding step number, and the stepping motor drives the focusing assembly of the thermal infrared imager to move to the corresponding position, so that the thermal infrared imager is focused; and the laser ranging assembly continues to track the target object and repeatedly executes the steps so as to realize continuousautomatic focusing of the thermal infrared imager. According to the invention, continuous automatic focusing of the thermal infrared imager can be realized, a target object, especially a moving targetobject, can be locked in time under the conditions of complex scenes and more objects, and the purpose of rapid tracking can be realized.

Description

technical field [0001] The invention relates to the field of physical measurement, in particular to an infrared thermal imager and a continuous automatic focusing method thereof. Background technique [0002] Infrared thermal imaging camera is a device that uses infrared thermal imaging technology to convert the image of the temperature distribution of the target object into a visible image by detecting the infrared radiation of the target object, and adding signal processing, photoelectric conversion and other means. The thermal imaging camera accurately quantifies the actually detected heat, and images the entire target object in real time in the form of a surface, so it can accurately identify the suspected fault area that is heating. Operators use the image color displayed on the screen and the hot spot tracking display function to preliminarily judge the heating situation and fault location, and at the same time strictly analyze it, thus embodying high efficiency and hi...

AI Technical Summary

Problems solved by technology

When the scene is complex and there are many objects, it may be difficult to automatically focus on the target object. It is necessary to operate the manual focus ring or the focus button to manually focus, which requires two-handed operation, which is not convenient enough; for moving target objects, it needs to be tracked all the time The target object, and multiple times of automatic focus or manual focus, the operation is cumbersome and cannot meet the needs

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