Thermal infrared detector

Introduction

Thermal infrared life detector is one of life detectors. Thermal infrared life detector with image display and night vision function, mainly through the perception of temperature differences to determine different targets, so it can work in the dark environment as usual, the detection depth of up to tens of meters, either remote control, but also Wire control, easy to carry and use, known as "Nighthawk." All objects emit infrared radiation. The amount of radiation is related to the temperature of the object. It is roughly a high temperature and a large amount of radiation. Therefore, if the infrared radiation is large, it means that the temperature is high. According to this relationship, it can be roughly inferred. Where there is life. The integrated use of advanced infrared detection equipment and other advanced detection equipment has greatly improved the ability to detect life in different environments. Thermal infrared detectors mainly determine the exact location of trapped persons based on the temperature difference between the personnel and the surrounding environment.

background

Life detector is a new technology developed in recent years. It is a high-tech rescue equipment for detecting signs of life. At present, there are infrared life detectors, audio life detectors, and radar life detectors. Life detectors are based on the development of Through-the-Wall Surveillance (TWS) technology. TWS is a kind of detection technology that studies whether or not there is a life after an obstacle. It can use passive detection and active detection. Passive detection is mainly based on the difference between human radiation energy and background energy, or passive sound waves or vibration waves emitted by the human body, such as infrared life detectors, audio life detectors; active detection is to actively launch electromagnetic waves, according to human Physiological characteristics such as breathing, heartbeat, and the detection of the presence of life from reflected electromagnetic waves, such as radar life detectors.

principle

As long as the temperature is above zero, any object will produce infrared radiation, and the human body is also a natural source of infrared radiation. Thermal infrared life detectors, but the infrared radiation characteristics of the human body are different from the infrared radiation characteristics of the surrounding environment. The infrared life detector uses the differences between them to separate the target to be searched from the background by imaging. The central wavelength of the infrared radiation energy of the human body is 9.4 μm, and the infrared radiation of the human skin ranges from 3 to 50 μm, of which 8 to 14 μm account for 46% of the total body radiation energy. This wavelength is an important technology for designing human body infrared detectors. parameter. The infrared life detector can withstand the harsh conditions of the rescue scene and can search for life in the dense smoke, fire and dark environment after the earthquake. The infrared life detector detects the heat of the victim's body. The optical system converts the received human thermal radiation energy into an infrared sensor and converts it into an electrical signal. After processing, the infrared thermal image is displayed on the monitor to help rescue workers determine the death. The location of the person.

Features

Night Vision Function <br> Night vision function is not affected by light, and it can work normally even without light. It helps rescuers to quickly and accurately determine the death of being buried under the rubble or behind the dusty fog. The location of the person. At the same time, it can withstand the harsh conditions of the rescue scene.

Detection distance is far <br> Even in dark environments, the detection depth can reach tens of meters.

Easy to carry <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

application

Infrared detection equipment was first applied to the military and continuously improved with the development of science and technology. In 1988, AGA introduced a full-featured thermal imager that combines temperature measurement, modification, analysis, and image acquisition and storage. This technology is used to develop a portable full-function thermal imager that is primarily used for military investigation. With the development of society, all countries have begun to pay attention to the development of technical equipment used to reduce the casualties caused by various disasters. Infrared detection technology has also changed from a military to a rescue instrument, an infrared life detector. Thermal infrared life detectors can be used exclusively for personnel search and rescue work to help rescue team members quickly find weak lives in and around the rubble-affected areas.