Dual-lens blessing, visual temperature measurement upgrade, Hikvision K20 pocket thermal imager evaluation

time:2022-12-08 07:49:28 source:scripttoolbox.com author:Notebook computer
Dual-lens blessing, visual temperature measurement upgrade, Hikvision K20 pocket thermal imager evaluation

We once introduced to you a P10 portable thermal imager from Hikvision. It has a small and portable body, is easy to use, and has a good user experience. It is a practical gadget for geek players. Of course, as a "professional equipment" in the evaluation room, it also brings convenience to our daily evaluation work. In addition to the low resolution, it can basically meet the needs of measuring temperature and shooting heatmaps. Now, we "happy to mention" another more powerful pocket thermal imager - Hikvision K20, let's experience this new product together. Specifications and parameters Detector resolution: 256×192 Response band: 8~14μm Accuracy: ±2℃ or ±2% Temperature measurement range: -20℃~400℃ Screen: 3.5 inches Battery capacity: 2100mAh Protection class: IP54 Reference price: 2999 yuan is as portable as a mobile phone and industrial quality. Compared with the P10, which is as compact as an eraser, the Hikvision K20 is much larger in size because it is equipped with a screen. Phones (even thinner), but still fit comfortably in a pocket, maintaining good portability. The shape of the fuselage is relatively square, the edges are rounded, and the product weight of 218g makes the K20 feel quite good in the hand. It is stable and solid in the hand, and it has the feeling of a card camera. The lower right corner of the fuselage is equipped with an anti-lost hand strap that supports elastic adjustment, which can effectively prevent the machine from falling and damage when used outdoors. Not only that, in order to meet the harsh use environment of industrial grade, the product also focuses on strengthening the protection ability. The whole body is wrapped by a black skin-like material. The material is softer and has a certain buffering effect. The screen and camera module are concave. designed to avoid direct contact with the ground. These protective designs allow the Hikvision K20 to obtain IP54 dust and water resistance and 2m drop resistance, making it durable enough even for professional users. The standard storage bag is exquisite in workmanship, and can carry the charging head and the data cable at the same time. In terms of buttons and interfaces, the top of the fuselage is equipped with a power-on button and a photo/record button. It is also easy to operate while holding it. The Type C charging interface is located on the left side of the fuselage, and there are buzzer alarms on the left and right sides of the interface. With the front fill light, it can realize high temperature sound and light alarm. It is worth mentioning that it also provides a standard 1/4 screw hole, which can be connected to a tripod, handheld pole or mobile phone stabilizer, and the shooting methods are more diverse. The Hikvision K20 is equipped with a 3.5-inch touch screen with a resolution of 640×480. Although the screen is not as fine as a mobile phone, it is enough for an infrared thermal imager. Through this screen, we can make touch settings, or directly view the captured pictures or videos, what you see is what you get, without relying on the mobile APP, and the convenience of use is greatly improved. This thermal imager also comes with 16G of storage space, up to 4 hours of battery life, and supports fast charging. Various ways to play, precise and easy to use. Compared with the P10, the Hikvision K20 not only adds a touch screen that supports direct operation, but also adds an 8-megapixel camera next to the thermal imaging sensor. Through Hikvision’s high-end AI image processing algorithm, the optimized Visible light low-frequency information, the real image and thermal imaging are combined to obtain a fuller, sharper and clearer picture. The resolution of the thermal imaging sensor itself has also been upgraded to 256×192, and the pixels are increased by 2.5 times. In terms of specific use, the Hikvision K20 with touch screen blessing is very easy to use. Even users who have not used thermal imaging cameras before can easily get started with a little familiarity. The upper left corner of the screen is the temperature display. By default, the center of the screen, the highest and lowest temperatures are displayed, the lower left corner is the current temperature range, and the bottom is marked with the current time, temperature unit and reflectivity. Click "MENU" in the lower right corner to enter the display menu, and there are three functional area buttons on the far right. There are 4 preview modes. In the display screen menu, you can set the temperature measurement rules, false color, preview mode and temperature range, which is convenient for users to adjust themselves in different measurement scenarios. Here we should mention the "temperature range". In the automatic mode, the system will automatically match the false color according to the heat distribution. When we choose the manual mode, the HIKMICRO AGC automatic gain adjustment image technology will be turned on, and the object to be measured will be selected by touch. One-click adjustment highlights the sense of hierarchy. For example, if I want to observe the air outlet of the mainboard NAS, I can click the corresponding position on the screen, so that the picture will be reconstructed based on the temperature of the air outlet, so as to eliminate the interference of other temperatures in the environment and help analyze the heat dissipation. The three functional area buttons correspond to shooting functions, album management and system settings respectively. Flick the screen with your finger to pull down the status bar, you can quickly turn on/off WIFI, Bluetooth, screen projection, flashlight and other functions. The interaction design is close to the mobile phone, getting rid of complicated physical buttons, and various operations are relatively smooth and responsive. In addition, the photos taken by the thermal imager will record all the temperature measurement parameters. With the "Micro Film Thermal Vision" APP and the "HIKMICRO Analyzer" computer client, it supports adding temperature measurement points or temperature measurement areas later, which is very practical. The main purpose of using the thermal imager is to measure the temperature of the equipment. Although the previous Hikvision P10 can realize the basic thermal imaging picture and analyze the heat distribution of the equipment, as mentioned above, the resolution of the picture is low. For example, when measuring the heating of the C-side of a notebook computer, the boundary between the button and the panel cannot be well distinguished. And we use the Hikvision K20 for real shooting. The effect is much better. After turning on the dual-light fusion function, the clarity and detail performance are improved to a higher level, and you can even clearly see the characters on the keyboard and the artifacts. The phenomenon is also very slight and hardly affects the perception. In addition, if you need PCB-level details, the official also launched a dedicated macro lens for users to buy. Excellent detail performance In addition to measuring the temperature of conventional objects, Hikvision K20 can also meet industrial temperature measurement scenarios such as steelmaking, blast furnaces, and metallurgy. The measurable temperature range is -20~400℃. In terms of measurement accuracy, we made a simple comparison between it and an ordinary temperature gun. At roughly the same point on the C side of the notebook, the temperature was measured with a thermal imager and a temperature gun. The temperature displayed by the thermal imager was 31.5°C, while The value measured by the temperature gun is 30.2 ℃, which is not much different. This performance is basically the same as that of the P10. It is completely sufficient for hardware evaluation purposes. Summary: It is clear and better to use, and meets the needs of quasi-professionals. After practical use, the experience of the Hikvision K20 pocket thermal imager is very good. It is suitable for quasi-professional users who have temperature measurement needs, especially the addition of the screen allows us to be very convenient. temperature measurement work. The newly upgraded high-pixel thermal imaging sensor and visible light camera have greatly improved the clarity of the picture and can more intuitively observe the heat distribution of the device. The thermal imager itself has rich adjustment options. "HIKMICRO Analyzer" computer client, the combination of software and hardware makes temperature measurement easier. From the two "pain points" of ease of use and picture accuracy, the performance of Hikvision K20 is much better than that of the "veteran" P10, and the output resolution and temperature measurement range have also been enhanced. However, due to time constraints, Functions such as Bluetooth and screen projection have not come and experienced. Interested players can explore new functions and unlock more new ways to play.

(Responsible editor:Chassis)

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