Long-focus push-broom camera device based on piezoelectric actuator

Abstract

The invention relates to a long-focus push-broom camera device based on a piezoelectric actuator and belongs to the field of long-focus push-broom cameras of aerial photography unmanned aerial vehicles. A streamline shell is fixedly connected with the unmanned aerial vehicle through bolts, a bearing frame and the streamline shell are welded together, the bearing frame is connected with a long-cylinder push-broom device through eight anti-compression-extension vibration isolation dampers, the light incident glass is embedded in the bearing frame, a front end of the long-cylinder push-broom device is connected with rotatable vibration isolation platforms in a fastened mode through bolts, a rear end of the long-cylinder push-broom device is connected with the rotatable vibration isolation platforms in a fastened mode, and the two rotatable vibration isolation platforms are fixed in the bearing frame. The device is advantaged in that the structure is novel, the piezoelectric actuator is utilized as a power source for hydraulic driving to adjust an angle of a reflector, the weight and energy consumption of the device are reduced while precision is guaranteed, the influence of angular vibration and linear vibration on imaging of the device is eliminated, electric energy is stored in an energy storage battery through a piezoelectric energy harvesting device, and the endurance time isprolonged.

Description

technical field [0001] The invention relates to the field of a long-focus push-broom camera for aerial photography of an unmanned aerial vehicle, in particular to a long-focus aerial push-broom camera device based on a piezoelectric actuator. Background technique [0002] With the continuous development of science and technology, aerial photography drones have been rising in recent years, and long-focus aerial push-broom cameras have gradually entered people's field of vision. Long-focus push-broom cameras are used in imaging systems to place cameras, mirrors and fixed imaging devices. The supporting equipment is used to protect the mirror group and control the rotation direction of the mirror. It is widely used in practical aerial photography such as engineering survey, military survey, disaster survey, and information acquisition. The continuous change of its own attitude and the influence of external weather and other factors make the image motion compensation device more...

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a long-focus push-broom camera device based on a piezoelectric actuator to solve the problem that the existing long-focus push-broom camera device cannot make corresponding gestures when facing angular vibration, linear vibration and operations at different heights Problems of compensation, image motion compensation and accurate focal length adjustment, poor vibration reduction effect and excessive energy consumption of the UAV during high-altitude operations, attitude adjustment and working at different temperatures, short battery life, unable to achieve energy conversion and adjustment Internal temperature to protect the lens barrel

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