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VCM integrity test method and system

A test method and test system technology, applied in optics, instruments, photography, etc., can solve problems such as unfavorable fast focusing, achieve fast focusing, and achieve the effect of shock suppression

Active Publication Date: 2016-07-20
KUNSHAN Q TECH CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

On the mobile phone, VCM vibration is not conducive to fast focusing, so suppressing vibration is a problem that needs to be solved

Method used

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  • VCM integrity test method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] A kind of VCM integrated performance test system, it is characterized in that: comprise the power supply circuit that applies voltage to VCM two ends, be provided with the main control unit (MCU) of timer, the server that is connected with main control unit (MCU), VCM test module And the laser rangefinder connected with the VCM test module, the MCU controls the operation of the VCM test module. At a time point t (0<t<oscillation period (T)), adjust the voltage to reduce the input current i to VCM to a current value smaller than the initial current I (0<i<initial current (I)), so that The VCM generates a downward force to offset the upward oscillating force of the VCM, and on this basis, gradually increases the input current i, and finally restores the initial current I to achieve VCM oscillation suppression.

[0042] The VCM integrated performance test system of the present invention also includes an EEPROM test module, a Hall test module and a Gyro test module operated...

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Abstract

The invention discloses a VCM integrity test method which comprises the following steps: 1, on the basis of AD signal acquisition of an MCU, calculating VCM resistance, so as to obtain voltage V to be input; 2, applying the voltage V to two ends of VCM through a power supply circuit so as to enable corresponding initial current to pass through the VCM, transmitting back distance digits output from a laser range finder connected with a VCM test module to the MCU through the VCM test module, calculating by using the MCU so as to obtain a VCM oscillation period T, and uploading the VCM oscillation period T to a server; 3, enabling the MCU to inquire whether oscillation inhibition is tested or not, if so, implementing the following step; and 4, powering on a timer of the MCU, regulating the voltage at one time point t within a first oscillation period T, reducing input current i of the VCM to be smaller than the initial current I, enabling the VCM to generate downward force to counteract upward oscillation force of the VCM, gradually increasing the input current i on the basis, and finally, recovering the initial current I, thereby achieving VCM oscillation inhibition.

Description

technical field [0001] The invention relates to a VCM integrated performance testing method and system, in particular to a VCM integrated performance testing method and system capable of realizing oscillation suppression after completing an oscillation cycle test. Background technique [0002] When the VCM moves to a corresponding position, it has a mechanical vibration similar to that of a spring, and also has a corresponding vibration cycle. The VCM must go through a certain period of time to reach a relatively stable period. On the mobile phone, the vibration of the VCM is not conducive to fast focusing, so suppressing the vibration is a problem that needs to be solved. Contents of the invention [0003] In order to overcome the above defects, the present invention provides a VCM integrated performance testing method and system, which can continue to implement oscillation suppression after the oscillation period test is completed. [0004] The technical solution adopte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B43/00
CPCG03B43/00
Inventor 丁杰许克亮张银凤
Owner KUNSHAN Q TECH CO LTD
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