The frame rate represents the shooting time density of the camera video and can be used to suggest how fast the camera will take the sample. The concept of frame rate is how many pictures are output per unit time during the video process, and the number of pictures outputted only represents the time density of the output. For example, the T600 series 30Hz concept represents 30 pictures in one second. 60Hz in the T400 series, representing one second output span> 60 pictures.
Although the total amount of output pictures in one second is different, in reality, not the moving objects that T600 can’t shoot (such as a moving car) can be photographed by the T400 series. The time constants of the two devices are the same, that is, the time to generate a photo is the same. Therefore, when two devices are shooting the same moving object, the effect of a single photo in the video is the same. If the blur is blurred, the blur will be the same.
The highest moving speed of the sample that can be taken by the thermal imager, that is, the thermal imager can capture the motion state of the measured object, is determined by the time constant of the thermal imager (the parameter of the cooling thermal imager is called the integration time). The time constant of the uncooled thermal imager is generally 8-12ms. This parameter can be considered as the time when the thermal imager generates an image. The reason is similar to the shutter speed of a digital camera. Whether it is the 30Hz T600 series or the 60Hz T400 series, the single photo generation speed is the same during video recording, that is, each picture takes 8-12ms to generate, and then transferred to the computer through data conversion and processing. . Please note that because the detector is the same material, in fact, whether it is the T600 series or the T400 series, the ability of the detector to generate photos per unit time is the same. The reason why the T600 is less per second is because of the resolution comparison. Large, its back-end data processing unit data workload is four times larger than the T400 series. It is not that it can’t be made 60Hz, but if it is made 60Hz, the data processing ability can’t keep up.
To give a popular example, the two roofs that are also raining, one area is four times the other, but the two roof drainage pipes are the same thick. At the beginning, we blocked the outlet pipe so that the roof had the same water depth (the infrared detector photoelectrically needs enough photons to fall on the detector’s delay pixels). The time spent is the same. When the water is completed, the pipeline is drained and the water flow of the two roof drains is different. The small roof water was released, and the big roof was not halfway.
In summary, if the customer uses the process of high time density, he can be advised to choose a high frame rate thermal imager. For example, if the customer wants to measure the temperature for 60 times in one second and the measured object does not move, then it can be recommended directly to him according to the frame rate.
If the customer wants to see the transient, that is, the customer wants to see the instantaneous state of a 50KM/h car (you can see the status, you don’t have to watch how many times in a second). You should choose a device with a small time constant to observe. In practice, transients are generally accompanied by the need for high-speed shooting.
Xiaobian shares this with you. I mainly want to say that for moving objects, the A310, A300, E60, T400, and T600 series have the same instant shooting ability, but the ability to process the total amount per unit time is different. If a customer needs to shoot for a momentary state of a moving object, if one device cannot be photographed clearly, other devices cannot be photographed. Because the transient shot is independent of the frame rate, it is determined by the time constant.
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