PTZ camera motor jump correction circuit

Abstract

The invention relates to a cradle head camera motor jump correction circuit, which is characterized in that a pulse receiving circuit receives a control pulse output by a controller through a photoelectric coupler and outputs the control pulse after buffering, a synchronous pulse generating circuit divides a current step displacement signal of a synchronous motor detected by a position sensor froma base position signal by a divider, the divided value is compensated by a hysteresis compensation circuit and outputs a signal which is determined and is an integral multiple of the base position signal, then the signal is converted into a high level signal of the corresponding time to drive a relay K1 coil to be electrified, a synchronous regulating circuit adds the received control pulse output by the pulse receiving circuit to a D trigger, the synchronization with the current position signal is realized the synchronous pulse provided by the control of the relay K1 of the synchronous pulsegenerating circuit, and finally, a steep-edged and non-attenuated control pulse is output to a stepping motor driving circuit through a hysteresis following circuit, so that the problem of jump caused by the fact that the stepping motor is electrified again after power failure and does not have a memory function is solved.

Description

technical field [0001] The invention relates to the technical field of remote control, in particular to a jump correction circuit for a pan-tilt camera motor. Background technique [0002] Most of the traditional surveillance cameras are fixed in position, the monitoring range is limited, and it is easy to have dead spots in monitoring. With the development of technology, a pan-tilt camera monitoring system has appeared. At present, the pan-tilt camera motor is remotely controlled, and a camera control device (cloud station control equipment), the control office is equipped with a remote control center, and the monitoring personnel of the remote control center transmit the camera control instructions to the camera control equipment through the Internet, and convert them into control instructions after demodulation, and output them through the controller set inside the camera control equipment The control pulse is sent to the stepping motor to remotely control the rotation of...

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a jump correction circuit for the motor of the pan-tilt camera, which has the characteristics of ingenious design and humanized design, and effectively solves the problem of the stepping motor being re-energized after a power failure. The memory function will cause the problem of jumping

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