Infrared thermal imaging night vision device with laser rangefinder

1. Principle

Principle of infrared thermal imaging

In nature, all objects with a temperature higher than absolute zero (-273.15℃) will radiate infrared rays outward, and their radiation energy is related to the temperature of the object. The higher the temperature, the stronger the infrared radiation. The detector in the infrared thermal imaging device can receive the infrared radiation emitted by the object and convert it into an electrical signal. After processing, it generates a thermal image, thereby showing the surface temperature distribution of the object.

Principle of laser rangefinder

Laser rangefinder is to calculate the distance by emitting a laser pulse to the target object and then measuring the time required for the laser to travel back and forth to the target. Generally, there are two methods: pulse method and phase method. The pulse method rangefinder emits a laser signal to the target, records the round-trip time of the light signal, and multiplies the speed of light by half of the round-trip time to obtain the measured distance; the phase method converts the distance of the measured target by measuring the phase change of the signal modulated on the laser.

2. Advantages

Integration of target positioning and distance measurement

In military reconnaissance, soldiers can quickly find enemies hidden in the grass or bunkers through multi-function infrared night vision devices (VA-T685L3), and use laser ranging to accurately measure the distance between the enemy and themselves, providing accurate information for combat decisions. During power inspections, staff can first use infrared thermal imaging to find the overheated parts of the equipment, and then use laser ranging to determine the specific location and distance of the parts, which is convenient for subsequent maintenance.

Enhance environmental perception

Infrared thermal imaging is not limited by light conditions and can clearly image at night or in low light environments. Laser ranging is not affected by factors such as ambient temperature and humidity. The combination of the two can work accurately in a variety of complex environments. For example, in a night search and rescue operation, it can quickly locate trapped people and measure the distance to the trapped people, and formulate a reasonable plan for the rescue operation.

Improve measurement accuracy and efficiency

Laser ranging has the characteristics of high precision and can accurately measure the distance of the target object, with an error usually at the centimeter level or even smaller. Infrared thermal imaging can quickly scan a large area and find potential targets. The combination of the two can not only quickly find the target, but also accurately measure its distance, greatly improving work efficiency and measurement accuracy. For example, in industrial measurement, the fault location of large equipment can be quickly determined, and the size and distance of related components can be accurately measured to provide accurate data for equipment maintenance and replacement.

3. Application fields

Military field

Multi-function infrared night vision device (VA-T685L3) can be used for night reconnaissance, target positioning, fire guidance, etc. For example, on the battlefield, soldiers can use this device to accurately find the enemy's position, equipment and other information at night, and accurately measure the distance, providing data support for the precise strike of artillery, missiles and other weapons, and improving combat effectiveness.

Security monitoring field

It can monitor and warn important places, borders, etc. in harsh environments such as darkness and smoke. Once a suspicious person or object enters the monitoring area, its location and distance can be quickly discovered and determined, and the security personnel can be notified in time to handle it, thereby enhancing the reliability and effectiveness of security monitoring.

Power industry

For inspection and fault diagnosis of power equipment, the staff can intuitively see the temperature distribution of the equipment through infrared thermal imaging, and promptly discover abnormal phenomena such as overheating, and then use laser ranging to determine the specific location and distance of the fault point, so that maintenance personnel can quickly arrive and repair it, and ensure the normal operation of the power system.

Industrial detection field

It can detect various equipment, pipelines, lines, etc. in industrial production, quickly discover potential fault hazards, such as local overheating of equipment, leakage of pipelines, etc., and accurately measure the distance and size of related parts, providing a scientific basis for equipment maintenance and maintenance, and improving the safety and efficiency of industrial production.

Fire rescue field

At the fire scene, smoke is everywhere and vision is obstructed. Infrared thermal imaging can penetrate the smoke and quickly locate the fire source and the position of trapped people. Laser ranging can provide accurate distance information for rescue personnel, helping them to formulate the best rescue route and plan, and improve rescue efficiency and success rate.

UAV field

After the drone is equipped with infrared thermal imaging and laser ranging equipment, it can be widely used in terrain surveying, power inspection, agricultural monitoring, disaster assessment and other fields. For example, in terrain surveying, it can quickly obtain large-area terrain data and ground object information; in power inspection, it can efficiently check the operation status of transmission lines and towers; in agricultural monitoring, it can monitor the growth status of crops and pests and diseases, etc.

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