As an advanced thermal imaging drone, the EVO II 640T excels in many fields. Thermal imaging drones can also help the police complete arrest tasks. The rapid deployment capability, range and adaptability of drones are of great benefit to policing.
According to incomplete statistics:
- As of March 2020, at least 1,578 state and local public safety agencies in the United States disclosed having acquired drones.
- Of these public safety agencies with drones, 70 percent were law enforcement agencies, and 431 of these agencies (27 percent of the total reported) had acquired more than one drone.
- In 2021, the NYPD conducted 75 drone operations across the five boroughs, and in the first 18 months of its drone program, the Polk County Sheriff's Office in Florida flew more than 750 missions, making arrests. 31 suspects were identified and the whereabouts of 5 missing or endangered persons were located.
- On average, it costs police departments an estimated $35,000 to $55,000 to start a drone program consisting of two drone systems.
Let's take a look at the heroics of the EVO II 640T.
Application Cases Of Autel EVO II 640T
The American-made Autel Evo II Dual 640T Aircraft/Drone provides police with best-in-class imagery that turns night into day, offering 10 color palettes for viewing in virtually any environment.
EVO II 640T is a professional UAV with dual cameras. In the execution of special police missions, in addition to the high-definition RGB camera, the real ability of the thermal imager is the key.
Thermal imager UAV equipment with good performance can detect the whereabouts of suspects in time in the dark, report intelligence, connect with Live Deck, and provide real-time information about the ground situation to the command post so that commanders can make better decisions.
Thermal Imager Quality Combined with Platform Size and Ease of Use
Autel EVO II 640T is a foldable quadcopter drone, very easy to operate, has VTOL capability, has a long flight time, supports omni-directional obstacle avoidance and intelligent tracking, which is among the thermal camera drones is a leading combination.
The EVO II Dual 640T is the best combination of camera size and quality. As a police drone, there are often a large number of mission execution areas within the controlled airspace, and drones with geo-fences will be forced to stop flying, which is a big trouble for mission execution.
The EVO II drone does not have geo-fencing, but only a warning, the choice is the driver. The ability of Autel drones not to be locked out by geo-fences has also become a point of interest for many organizations.
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The Choice Of Thermal Imaging Camera Drone
The use of thermal technology is a force multiplier for tactical teams, SWAT, search and rescue, surveillance and other public safety applications. The thermal imager of Autel EVO II Dual 640T has a resolution of 640*512, updates images at a refresh rate of 30Hz per second, 10 thermal color palettes, and accurate temperature measurement, making 640T a police drone.
Thermal Drone Resolution
Autel EVO II Dual 640T uses the Uncooled VOx Microbolometer, and the resolution of the detector is the primary factor that determines the camera's ability to generate high-quality images. A high-resolution thermal camera typically has a 640×480 detector, which provides 307,200 pixels; compare that to the 76,800 in a camera with a 320×240 detector. Standard formats are 160×120 (19,600 pixels), 384×288 (110,592 pixels), 640×480 (307,200 pixels), 1024×768 (786,432 pixels).
Obviously, the EVO II Dual 640T has a larger resolution: 640*512. The high-resolution thermal imaging drone camera has a larger usable range, and can detect the thermal activity of a target at a distance of 100 meters.
Thermal Drone Refresh Rate
Also very important is the refresh rate of the thermal drone, which is a number measured in Hertz, or Hz.
Refresh rate is defined as how often the image on the screen is updated with new images. A higher frame rate means faster image updates. So 9Hz means that the thermal image is updated 9 times per second, and 30Hz is 30 times per second.
Faster frame rates are especially important for applications where objects may be moving at higher speeds, such as vehicles or drones.
When the refresh rate is higher, the video is less blurry. When capturing and analyzing thermal images to detect faults or anomalies, the 9Hz frequency is sufficient for most inspection applications. However, the 30Hz refresh rate makes it easy to discern on-screen motion, making it ideal for search and rescue (SAR) and law enforcement applications.
Thermal Drone's Palette
How to properly read and process thermal images when using the 640T for suspect hunting?
Once the thermal information is captured by the drone using an infrared camera, that thermal data is displayed as a regular image on the screen for the operator to review.
Using the thermal imaging software IRPC, a free temperature measurement analysis tool specially developed for 640T, allows users to quickly import images, edit and analyze temperature measurements, and generate detailed reports for sharing and collaboration.
The thermal palette of the thermal drone can be changed by the user to highlight the thermal display of the scene. Each view helps to pick out various details from the imagery, including thermal data and temperature readings, as well as GPS tags.
- White Hot: Warmer objects appear brighter, while cooler areas appear darker.
- Black Hot: As opposed to Hot White, hotter objects appear darker.
- Rainbow: Temperature corresponds to hue, and warm colors represent heat.
The above are the three common palette characteristics. White Hot and Black Hot are by far the most popular ways to view them, and this palette highlights objects in the scene with the greatest temperature differences. Objects in the scene that emit the most radiation are white, those that emit the least are black, and vice versa. A more advanced thermal camera offers a wider field of view - the EVO II Dual 640T offers 10 individual color palettes.
640T's Picture-in-Picture Mode
640T thermal image resolution, refresh rate, color palette display is the leader among many thermal drones. However, Autel also organically combines the thermal image display of 640T with the images captured by the visual camera. The unique picture-in-picture mode will make it easier to view everything, enhance situational awareness, and help users quickly interpret data and make key decisions.