A method for controlling a moving head camera

Abstract

The invention provides a control method for a moving head camera. The baffle is divided into n sections by adopting a multi-stage positioning method. The length of each baffle is different, and the adjacent distances between each baffle are different. Installed across the baffle, the stepper motor drives the rotating mechanism to move, and the optocoupler moves from the start to the end position. During the movement of the stepper motor to drive the optocoupler, when the optocoupler moves from the i‑1 area to the i area, if If the absolute value mδ of the difference between the motor step values ​​obtained by two consecutive changes in the state of the optocoupler is in the array {M1,M2,M3,M4,M5,M6,...,Mi,...,Mn}, then it is judged that the optocoupler is currently It is in the i area, and the current motor step value is updated to Si when the optocoupler state changes for the second time. Through the control method, the head shaking machine can effectively judge and calibrate the current position when abnormalities such as motor stall and idling occur during operation, and can ensure accurate position calibration during operation.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for controlling a moving head camera. Background technique [0002] In the field of security, moving head cameras or PTZ products are becoming more and more popular in the market, especially wireless moving head cameras for home use, because they have a horizontal 360° viewing angle, pedestrian or motion tracking, direct connection to wifi and remote PTZ control of the view through mobile phones, etc. Advantages, is gradually becoming an important member of home smart products. The algorithm for controlling the rotation motor of the shaking head machine is also constantly developing and improving. Most of the existing products use stepper motors as the driving mechanism for shaking head control, and use optocoupler tubes or position switches to position and calibrate the shaking head machine. Some high-end products also use position sensors, gyroscopes and...

AI Technical Summary

Problems solved by technology

[0005] 1) It cannot effectively solve the position calibration when the motor is stalled, idling and other abnormalities during the operation of the shaking head machine;

[0006] 2) When the head oscillating machine is in a static state, when an external force forcibly pushes the rotating mechanism, the head oscillating machine cannot return to the position before the push;

[0007] 3) During the operation of the head shaking machine, when the optocoupler is falsely triggered, the head shaking machine cannot perform effective position calibration

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