Motor control method and device in zoom camera module

Abstract

The embodiment of the present invention discloses a motor control method and device in a zoom camera module, which relates to the field of camera technology, and is used to eliminate the damage and abnormal noise of the zoom camera module caused by the collision of the motor in the zoom camera module with the wall Voice. In the embodiment of the present invention, when receiving the instruction to close the zoom camera module, the distance between the current position of the motor and the preset position is obtained; it is judged whether the obtained distance is greater than the preset threshold, and if so , then output to the motor a drive current signal for controlling the motor to move to the preset position, to instruct the motor to move to the preset position under the drive of the drive current signal. When the motor moves to the preset position and the preset condition is met, the motor is controlled to be powered off; if the acquired distance is less than the preset threshold, the motor is directly controlled to be powered off; thereby solving the above problem .

Description

technical field [0001] The invention relates to the field of camera technology, in particular to a control method and device for a motor in a zoom camera module. Background technique [0002] With the development of camera technology and image processing technology, more and more terminals (such as mobile phones, tablet computers, etc.) have zoom camera modules (Auto Focus, AF). When using zoom camera modules for macro shooting, you can get Better picture expression, for example, macro shooting can capture more small objects (such as flowers, birds, fish and insects, etc.), and fully display the details. [0003] Currently, a zoom camera module generally includes a camera and a motor for moving the camera within a predetermined travel range. figure 1 A schematic diagram of the internal structure of the zoom camera module in the prior art is shown, as figure 1 As shown, the zoom camera module mainly includes: the motor and the outer wall of the motor, the base 11, the motor...

AI Technical Summary

Problems solved by technology

Because the motor hits the wall, the camera module will be damaged, and even the life of the zoom camera module will be affected

[0005] In order to eliminate the phenomenon of the motor hitting the wall in the zoom camera module, the existing technology generally adopts the method of adding buffer rings such as rubber and foam to the limit block to alleviate the sound of the motor hitting the wall. However, this method in the prior art can only Reduce the sound of the motor hitting the wall, but not completely eliminate the motor impulse, this method will still affect the life of the zoom camera module

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