Camera telescopic device, control method thereof and electronic product

Abstract

The invention discloses a camera telescopic device. The camera telescopic device comprises a camera supporting piece used for arranging a camera; a direct-current motor used for outputting rotary motion; a transmission mechanism used for converting rotary motion into telescopic motion of the camera supporting piece; a controller connected with the direct-current motor and used for acquiring reversing current pulse signals of the direct-current motor and determining the actual rotating angle of the direct-current motor according to the number of the reversing current pulse signals; and determining the actual telescopic position of the camera supporting piece according to the actual rotating angle, and controlling the direct current motor to stop rotating when the actual rotating angle is equal to the theoretical rotating angle of the corresponding direct current motor when the camera supporting piece stretches to the preset position. The camera telescopic device can track the actual position of the direct-current motor, and the actual telescopic position of the camera supporting piece can be determined conveniently. The invention further discloses a control method applied to the camera telescopic device and an electronic product comprising the camera telescopic device.

Description

technical field [0001] The present invention relates to the technical field of electronic product auxiliary equipment, and more specifically, relates to a camera retractable device. In addition, the present invention also relates to a control method applied to the above-mentioned camera retractable device and an electronic product including the above-mentioned camera retractable device. Background technique [0002] With the intelligent development of electronic products such as mobile phones, tablets, computers, and televisions, retractable cameras are gradually being used. [0003] The camera telescopic device in the prior art usually uses a stepping motor as a power source to drive the camera to telescopically. However, the control of the stepper motor is usually an open-loop control. Every time the stepper driver receives a pulse, it will drive the stepper motor to rotate a fixed angle in the set direction without losing the step. Although the control is simple, but Th...

AI Technical Summary

Problems solved by technology

However, the control of the stepper motor is usually an open-loop control. Every time the stepper driver receives a pulse, it will drive the stepper motor to rotate a fixed angle in the set direction without losing the step. Although the control is simple, but The stepper motor is out of step, and it is easy to cause the stepper motor to not rotate properly, so that the camera cannot reach the preset position

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