Analysis of Triaxial Stability Platform Technology and Application in Video Surveillance

Triaxial stability platform, also known as triaxial structure or triaxial spiral instrument. It is a key device for automatic tracking and positioning of targets. Because this platform has a high degree of flexibility and stability in operation, it has always been applied to a high degree in the fields of aerospace and military industry.

The so-called triaxiality is the control and positioning of objects in three dimensions: length, width, and height. If this kind of technology is applied to the control platform, then the controlled device can better get rid of the influence on the work effect caused by the form and other factors of the device itself. For the field of security monitoring, although many existing two-axis cameras have gradually broken the restrictions imposed by their own installation sites, they have reduced their blind spots to a very small extent. However, factors such as installation form and installation location still restrict the monitoring effect of many two-axis platform cameras. However, the three-dimensional control of three-axis platform technology can be more flexible than the two-axis platform to solve this problem, and further eliminate the blind corner of video surveillance.

In terms of working principle, under normal circumstances, the three-axis platform consists of three frameworks that are spatially perpendicular to each other, where the inner frame is an orientation frame, the middle frame is a pitching frame, and the outer frame is a roll frame. Respectively control the camera's position, pitch and roll movements. When the platform carrier is shaken or tilted due to external influences, the pitching mount will recognize the deviation angle according to the sensors in both vertical and horizontal directions, and generate AC signals with positive and negative angles. After amplification, the corresponding motor is driven to generate balanced torque. , so that the platform eliminates deviations and restores levels. In fact, in simple terms, the role of the three-axis platform on the surveillance camera is mainly reflected in the following two aspects: 1, in the movement, through the platform sensor and motor isolation of external interference, so as to stabilize the role of the visual axis. 2. Control the seeker through three bearings, increase the monitoring range, and complete the fast and accurate tracking of the target.

Therefore, a camera with a three-axis platform can rely on its three-dimensional control mode and high-precision disk gear to eliminate dead angles in the camera more easily than ordinary two-axis cameras, allowing more accurate positioning and rapid ****. Even the installation factors (wall mounting, hoisting) that often cause a dilemma for a two-axis camera do not affect the visual range of the three-axis platform camera. In addition, based on the strong anti-jamming capabilities of the three-axis platform, jitter can be reduced during movement or tracking, resulting in higher picture quality.

At present, with the continuous development of the three-axis technology, its application has gradually shifted from a special industry to civilian use. In the current IT field, in addition to the current three-axis platform adjustment technology used in some high-end cameras, the mobile phone field is another major development market for this technology. Especially in some games that require motion sensing, triaxial technology is an indispensable requirement. For the three-axis platform itself, with the popularity of this technology, it is also constantly moving toward high precision, high density, miniaturization, and intelligence. Although the current surveillance camera with the introduction of the three-axis platform technology is still in the minority. However, it is believed that with people's higher requirements for camera imaging quality and video range, three-axis adjustment technology will eventually become the main driving force for the development of video surveillance.