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Self-correction pan-tilt camera and automatic correction method and system

A pan-tilt camera, self-calibration technology, applied in the field of cameras, can solve the problems of pan-tilt camera rotation angle deviation from the predetermined value, failure to meet the use needs, pan-tilt preset position offset, etc., to achieve the benefit of normal production work , Solve the problem of preset position offset and realize the effect of self-correction

Pending Publication Date: 2022-04-22
齐丰科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the elasticity and tension of the belt, there will be a hysteresis phenomenon when the pan / tilt rotates to the preset position
At the same time, after this type of pan / tilt device has been running for a long time, due to factors such as mechanical wear and tear, the rotation angle of the pan / tilt camera will deviate from the predetermined value, resulting in a shift in the preset position of the pan / tilt, and the inspection results cannot meet the actual needs of the site.

Method used

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  • Self-correction pan-tilt camera and automatic correction method and system
  • Self-correction pan-tilt camera and automatic correction method and system

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Experimental program
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Effect test

Embodiment 2

[0039] A self-calibration pan-tilt camera automatic calibration method, comprising the steps of:

[0040] The magnetic angle sensor transmits the angle electric signal to the main control board. After the main control board analyzes the signal, it calculates the angle error of the rotation control and transmits the data to the drive motor, which drives the pan / tilt for position correction.

[0041] In this embodiment, the embedded microcontroller on the main control board sends the pulse width modulation waveform signal PWM to the horizontal drive motor; the horizontal drive motor drives the main body to rotate horizontally;

[0042] The embedded microcontroller receives the electrical angle signal of the magnetic angle sensor A, and after analyzing the signal, calculates the angle error of the rotation control and converts it into a pulse width modulation waveform signal PWM, and further controls the rotation of the horizontal drive motor to a predetermined position, and compl...

Embodiment 3

[0046] Such as Figure 5 Shown, a kind of system of closed-loop control cloud platform, comprises cloud platform, magnetic angle sensor, embedded microcontroller, drive motor, transmission mechanism, described cloud platform is provided with magnetic angle sensor, embedded microcontroller, drive motor, A transmission mechanism, the magnetic angle sensor is connected to an embedded microcontroller, the embedded microcontroller is connected to a driving motor, and the driving motor is connected to a transmission mechanism. The magnetic angle sensor is connected to the embedded microcontroller and transmits the data to the embedded microcontroller. After processing the data, the embedded microcontroller transmits the information to the drive motor, and the drive motor drives the transmission mechanism to drive the pan / tilt to automatically offset the position. Compensation, so as to achieve closed-loop control of the pan / tilt.

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Abstract

The invention belongs to the technical field of cameras, and discloses a self-correcting pan-tilt camera and an automatic correcting method and system.The self-correcting pan-tilt camera comprises a pan-tilt base, the upper portion of the pan-tilt base is in shaft connection with a main machine body capable of rotating horizontally through a horizontal rotating main shaft, and the main machine body internally comprises a main control board and a horizontal rotating structure; the horizontal rotating structure comprises a gear A, a magnetic angle sensor A, a toothed belt A and a horizontal driving motor, a pitching rotating structure is further arranged in the main machine body, and the pitching rotating structure is coupled with the camera body and the light supplementing lamp body; the pitching rotating structure comprises a gear B, a magnetic angle sensor B, a toothed belt B and a pitching driving motor; and the magnetic angle sensor A and the magnetic angle sensor B are connected with the main control board. According to the camera, the magnetic angle sensors are arranged in the horizontal rotation structure and the vertical rotation structure, so that closed control is formed, and horizontal rotation and vertical rotation can achieve the position precision of 0.1 degree. The problem of offset of the preset position of the engineering field camera can be solved.

Description

technical field [0001] The invention relates to a self-correction pan-tilt camera and an automatic correction method, belonging to the technical field of cameras. Background technique [0002] At present, in the online intelligent inspection system of substations, PTZ cameras are used on a large scale as image sensors for primary equipment such as meters and knife switches. The traditional PTZ camera controls the movement of the PTZ through chip programming to control the stepper motor and gear transmission structure to drive the angular offset of the PTZ. Belt transmission is commonly used in gear transmission structure to provide power. Belt transmission is a kind of mechanical transmission that relies on friction to transmit power. Its characteristics are mainly manifested in the good elasticity of the belt, which can ease the impact and vibration during work, and run smoothly without noise. , and the monitoring image is also more stable. However, due to the characteris...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/695
Inventor 苗林戴金林郭磊丁健王全金彭正岭张志成
Owner 齐丰科技股份有限公司