Pvc Chain Link Fence,Pvc Coated Rhombus Chain Link Fence,Pvc Chain Link Shenzhou City Hongda Hardware Products Co.,Ltd , https://www.hdpvcwire.com
Performance difference between intelligent high-speed ball and ordinary high-speed ball
Smart high-speed ball is a kind of high-speed ball machine. It has made many improvements in the intelligence and performance of the ball machine on the basis of ordinary high-speed ball machines, and the degree of intelligence and performance have been improved.
Compared with ordinary high-speed domes, its performance and intelligence are mainly reflected in the following aspects:
The minimum illuminance of a camera is an indicator that the camera can still obtain a clearly visible picture when the brightness of a subject is reduced to a certain degree. Low-illumination smart domes are generally day and night conversion cameras, low-speed shutter cameras or super-sensitivity cameras. Day and night conversion cameras use black-and-white images to be sensitive to infrared rays. Under certain light conditions, the images can be switched from color to black and white using line switching, and infrared light sources can also be monitored under low light illumination conditions. The low-speed shutter dome camera uses computer memory technology to continuously accumulate several pictures that are blurred due to lack of light and become a clear picture. This type of camera is suitable for surveillance where infrared and ultraviolet light source environments cannot be used and the detected object moves slowly.
The different illuminance environment adaptability, focusing range and image resolution are mainly determined by the performance of the integrated camera inside the dome. The integrated camera is the core part of the high-speed dome camera. The camera movement and the lens determine the image horizontal resolution, focal length, minimum illumination, and letter resolution of the high-speed dome camera. It is an important indicator of a camera, and its performance is the clarity of the image. High-definition cameras require that the pedestrian's facial features be clearly seen and the license plate number be clearly seen. At present, several common integrated camera resolutions are generally 480 lines, and there are a few manufacturers of smart dome cameras that reach 540 lines.
The range of the camera's focal range can be selected for wide-range monitoring, such as 16X, 18X, 22X, and 23X, and individual brands can also achieve 26X and 27X. According to different monitoring ranges, high-speed dome cameras with different focal length ranges can be selected. Different multiples of high-speed ball prices are also very different, so equipment selection must first calculate and then choose a suitable multiple of the ball machine.
Smooth running is an important indicator of the performance of high-speed domes. One of the main reasons why high-speed domes have such a large market is their high-speed rotation capability. Ordinary pan/tilt rotation angles can only be 0~355. °, horizontal rotation speed> 11.2 °/s rotation speed, vertical rotation speed> 4.5 °/s. In general, high-speed domes can achieve 0-360° continuous rotation, 0-90° rotation, and P/T speeds from 0.01°/s to 150°/s, but only smart balls When the machine runs at low speed, there is almost no oscillation and there is no howling at high speed. When the ZOOM is at TELE's maximum state and the low speed operation is reflected on the monitor, the picture is stable and almost no image jitter is noticed, indicating the dynamics of the smart dome. The design and stepper motor subdivision techniques are excellent.
Preset repeat accuracy This is a very important indicator to measure the performance of fastballs. A good smart dome should have a very high preset position accuracy, such as ±0.01°. The significance of defining such a parameter is that when the smart dome camera is at the maximum zoom (TELE), its P/Z repeat positioning accuracy beyond this range may not capture the desired target. This requires the intelligent ball machine to have excellent mechanical design levels and motor motion algorithms. It is difficult to design and manufacture rough products with such high positioning accuracy.
Power adaptability and safety: The smart dome should support AC and DC power supply and support a wide range of voltage input. This requires fast ball power supply designers to master modern power supply design techniques and use highly efficient switching power management chips. Due to the limitations of the overall volume of fastballs, the frequency of switching power supplies must also be increased. Power safety is mainly reflected in that when the internal circuit of the intelligent dome camera fails, it will not affect the power supply line; secondly, when the power supply line fails, the internal circuit of the intelligent dome camera will react quickly, so that such failure will not occur. Damage to the dome is also indispensable for the lightning protection of outdoor smart domes in areas where thunderstorms are common.
Analysis of Performance Difference between Intelligent Speed ​​Dome and Ordinary Speed ​​Dome
Infrared high-speed ball is an intelligent camera front end, full name is called infrared high-speed ball intelligent dome camera, or integrated high-speed ball smart ball, or simply referred to as fastball, referred to as high-speed ball. Infrared high-speed ball is the front end of the camera with the most complex and comprehensive performance of the monitoring system. It is complex to manufacture and expensive, and can adapt to high-density and most complex monitoring occasions.