An intelligent high-precision PTZ control system

Abstract

The invention discloses an intelligent high-precision pan-tilt control system, which includes a motor, a multi-stage transmission mechanism, an incremental encoder, an absolute encoder and a single-chip microcomputer control circuit, and the incremental encoder and the absolute encoder are installed separately At the motor end and the output end of the multi-stage transmission mechanism, the speed of the motor and the specific position of the multi-stage transmission mechanism are obtained in real time through the incremental encoder and the absolute encoder, and the relevant parameters are fed back to the single-chip control circuit in time, and the single-chip control circuit By optimizing the control of the motor, the present invention can realize closed-loop high-precision positioning and high-smooth operation during the operation of the camera pan / tilt control system, thereby effectively overcoming problems caused by factors such as the driving method of the motor, mechanical hysteresis, or abnormal external force blocking. Motor overshoot or out of step phenomenon.

Description

technical field [0001] The invention relates to the field of pan-tilts, in particular to an intelligent high-precision pan-tilt control system. Background technique [0002] The pan / tilt is a supporting device for installing a fixed camera, and is generally divided into a fixed pan / tilt and an electric pan / tilt. The fixed pan / tilt is often used in occasions where the monitoring angle is not large, and the electric pan / tilt is suitable for scanning and monitoring a wide range of angles of view. This article describes a broadcast-grade electric pan / tilt. Traditional electric pan / tilts can usually be divided into two categories: [0003] 1. Only install the corresponding position detection encoder at the motor end or the input end of the transmission mechanism [0004] The defect of this type of pan / tilt system is that due to the influence of factors such as mechanical hysteresis and abnormal external obstructions, the repeat positioning accuracy of the pan / tilt is poor. The ...

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Problems solved by technology

[0006] The defect of this type of pan / tilt system is that the running speed of the motor cannot be closed-loop controlled during the rotation of the motor, and there will be phenomena such as torque ripple, so that the pan / tilt will vibrate during the operation, which will cause poor quality of the picture taken by the camera. The structure diagram is attached image 3

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