Analysis of the use of night vision devices in the industry
At present, night-vision technology has been widely used in the search for and rescue of missing persons, the search for fugitives, drug seizures, surveillance of the surrounding area and so on, and has become an indispensable tool in law enforcement. In the designers and staff efforts, night vision technology, especially thermal imaging technology is increasingly wide range of uses, on the current use, summarized in more than a dozen, has been widely recognized as several police often used are:
1. building silhouette display Nowadays, anti-drug operations are becoming more and more complex, many places of the first planting also from outdoor to indoor, which gives law enforcement officers to investigate and collect evidence to add a lot of trouble. The use of night-vision technology solves this problem because indoor grows are illuminated with large 1-kilowatt halogen lamps to provide the light and heat needed for growth. These lamps heat the inside of the building at the same time. Heat is radiated to the outside surfaces of the building and can be seen evaporating through the thermal imaging camera, thus assisting police in drug enforcement operations. 2.
2. Rescue missions, fugitive searches Overnight searches for missing persons or fugitives can be conducted with microscopes and thermal imaging cameras. People are strong emitters of heat and can be easily located with a thermal imaging camera. Thermal imaging cameras can also be used to find people hiding in concealed objects. For example, when the Georgetown Police Department was escorting two criminals, the criminals escaped due to negligence and the police immediately began a manhunt. One of them fled to a grassy area and hid himself. The police passed by the hiding place three times and could not find it even with a flashlight. ** Later, using a hand-held thermal imaging camera manufactured by the Raisinon Company, it took only 25 seconds to capture
3. Safeguard the safety of police officers The use of night-vision technology allows police officers to spot suspects at night without being seen themselves. In one such case in California, DEA law enforcement officers used thermal imaging cameras to monitor a group of suspected clandestine drug makers who were operating out of their mountain strongholds. Every night, they would come out to look for the police who were watching them in the woods. The officers used thermal imaging cameras in the woodlands to keep themselves undetected by the gangsters and to ensure their own safety.
4. Vehicle tracking Vehicles give off a lot of heat both during and after use. Heat radiation comes not only from the engine, but also from the tires, brakes and exhaust. A police helicopter equipped with a thermal imaging camera can track a suspect's vehicle from the air, even when it does not have its lights on. Patrol cars equipped with on-board thermal imaging cameras can also track suspect vehicles that are pulling into parking lots or moving away by detecting heat from vehicles that have just been turned off.
5. Spotting disturbed surfaces A recovered soil surface may not be visible to the naked eye, but it is visible with a thermal imaging camera because when a surface is disturbed, the thermal profile of the surface is also disrupted and the thermal radiation of the soil that has been turned over is different from that of the compacted soil. This feature of the thermal imaging camera makes it possible to find buried objects. The police have dealt with a case where a man killed his wife in a fit of rage. In order to cover up the evidence of his crime, the man buried the body in his backyard and covered the burial site with sod, which the man thought he had done seamlessly, but the police quickly found the body using a thermal imaging camera. Today, law enforcement agencies have begun using thermal imaging cameras to find where victims are buried. It's generally believed that thermal imaging cameras can find new graves within 90 days, but recently the American Geographic Society used a thermal camera to discover a 2,000-year-old Egyptian foundation.
6. Discovering hidden compartments Car factories routinely use thermal imaging cameras to check cars for faults. Police officers use thermal imaging cameras for this purpose to check vehicles for compartments. Drug traffickers often place drugs in tires, fake air tanks and return lines, or other compartments in the vehicle, which are difficult to detect with the naked eye. Through the thermal imaging camera is much simpler, such as vehicles have two back to the gas pipe and there is a false, through the thermal imaging camera observation will find that the use of the back to the gas pipe appears to be white and hot, while the other is not this phenomenon. It has been reported that the Joint Federal Inspection Unit on the United States-Mexico border has used this method and has found thousands of drugs and smuggled items of illegal aliens attempting to cross the border.
