CN105785707A - VCM integrity test method and system - Google Patents
VCM integrity test method and system Download PDFInfo
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- CN105785707A CN105785707A CN201610348070.5A CN201610348070A CN105785707A CN 105785707 A CN105785707 A CN 105785707A CN 201610348070 A CN201610348070 A CN 201610348070A CN 105785707 A CN105785707 A CN 105785707A
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- vcm
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B43/00—Testing correct operation of photographic apparatus or parts thereof
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
The present invention relates to a kind of VCM integrated performance test method and system, especially
A kind of VCM integration that can complete to realize concussion suppression after shaking period measuring
Performance test methods and system.
Background technology
VCM is to have a similar and spring when moving to a corresponding position
Machinery concussion, the most also has the concussion cycle of correspondence, and VCM must enter certain time
Can be only achieved a relatively stable period.It is the most right that mobile phone terminal is unfavorable for owing to VCM shakes
Jiao, thus suppression concussion is the problem needing to solve.
Summary of the invention
In order to overcome drawbacks described above, the present invention provides a kind of VCM integrated performance test
Method and system, described VCM integrated performance test method and system can complete
Continue after concussion period measuring to realize concussion suppression.
The present invention is to solve that the technical scheme one that its technical problem is used is: a kind of
VCM integrated performance test method, comprises the steps: S1: pass through main control unit
(MCU) AD (analog to digital) signals collecting, calculates VCM resistance, from
And draw the voltage V needing input；S2: power circuit applies above-mentioned at VCM two ends
Voltage V so that have the initial current I of correspondence to pass through in VCM, test mould with VCM
The radium-shine diastimeter that block connects, the distance numeral of its output is returned by VCM test module
Pass to MCU, MCU and calculate VCM concussion cycle T, and VCM is shaken cycle T
Upload server；S3:MCU asks whether test concussion suppression, if so, enters such as
Lower step: S4: open the intervalometer of MCU, certain in first concussion cycle T
One time point t (0 < t < concussion cycle (T)), regulates voltage, by the input to VCM
Electric current i is reduced to some current value (0 < i < initial current less than initial current I
(I)), make VCM produce a downward power to offset VCM vibratory forces upwards, and
It is gradually increased input current i on this basis, final recovery initial current I, it is achieved
VCM shakes suppression.
As a further improvement on the present invention, input current is reduced in described step S4
Time point t between T/5 and T/4, the input current i of this time point t
For 3I/4.
As a further improvement on the present invention, starting current is also included after step S1
Test S11: continue to increase voltage and make the electric current by VCM be gradually increased, observes radium
Penetrate whether diastimeter has qualitative change？If so, this electric current of radium-shine diastimeter qualitative change will be caused
It is worth the result upload server as starting current test.
As a further improvement on the present invention, after step S1, VCM row is also included
Journey test S12: regulation voltage makes by the electric current of VCM from the minima that can bear
It is gradually increased to maximum, observes the change in value amount on radium-shine diastimeter, by this number
Value variable quantity is as the result upload server of VCM stroke test.
As a further improvement on the present invention, after step S1, the VCM longevity is also included
Life test S13: regulation voltage incessantly to VCM input can bear minimum,
Maximum current, observes radium-shine diastimeter with or without big change？If it is not, by the number of times of test
Result upload server as VCM life test.
As a further improvement on the present invention, also include that the inquiry of step S0:MCU is
EEPROM test or VCM test？If VCM tests, enter step S1；If
It is that EEPROM tests S03, comprises the steps:
S031 a: random number is write in any one fixing address；
S032: read data from same address；
S033: judge to read data whether with write data consistent？
If so, step S031 is returned；
If it is not, enter step S034: judge whether the frequency of failure exceedes stipulated number？
If it is not, return step S031；
If so, by general to the number of times of read-write, failed number of times and makeing mistakes of calculating
The result upload server that rate is tested as EEPROM.
As a further improvement on the present invention, before step S0, Hall is also included
Test S01, comprises the steps:
S011: orthogonal left and right directions and fore-and-aft direction are in horizontal plane respectively
Reversal is injected to VCM on X/Y direction；
S012: on test X/Y direction, whether Hall has voltage difference？
If so, it is the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, be the result upload server that defective products is tested as Hall using Hall.
As a further improvement on the present invention, before step S0, Gyro is also included
Test S02, comprises the steps:
S021: fixing test system is in vibration table, and monitoring Gyro exports data in real time；
S022: test obtain the angle of Gyro data and vibrations rate whether with vibrations
Platform is consistent？
If so, it is the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, be then the result upload service that defective products is tested as Gyro using Gyro
Device.
The present invention is to solve that the technical scheme two that its technical problem is used is: a kind of
VCM integrated performance test system, executes alive power supply electricity including to VCM two ends
Road, the main control unit (MCU) being provided with intervalometer are connected with main control unit (MCU)
Server, VCM test module and with the VCM test radium-shine range finding that is connected of module
Instrument, MCU controls the operation of VCM test module, and VCM test module can complete
In the case of VCM shakes after testing and opens MCU intervalometer, by first
The t of point sometime (0 < t < concussion cycle (T)) in concussion cycle T, regulates voltage,
The input current i of VCM will be reduced to some current value less than initial current I
(0 < i < initial current (I)), makes VCM produce a downward power to offset VCM
Vibratory forces upwards, and it is gradually increased input current i on this basis, finally recover
Initial current I, it is achieved VCM shakes suppression.
As a further improvement on the present invention, also include being controlled to run by MCU
EEPROM test module, Hall test module and Gyro test module.
The invention has the beneficial effects as follows: VCM integrated performance test method of the present invention and
System is after completing VCM concussion test and in the case of opening MCU intervalometer, logical
Cross the point sometime (0 < t < concussion cycle (T)) within first concussion cycle, adjust
Economize on electricity pressure, will be reduced to some less than initial current to the input current (i) of VCM
(I) current value (0 < i < initial current (I)), makes VCM produce a downward power
Offset VCM vibratory forces upwards, and be gradually increased input current on this basis,
The final current value recovering initial input, it is achieved thereby that VCM concussion suppression, i.e. warp
Cross the VCM that VCM integrated performance test system test of the present invention is qualified, it is possible to make hands
Machine photographic head rapid focus.
Accompanying drawing explanation
Fig. 1 is the total system principle frame of VCM integrated performance test method of the present invention
Figure.
Fig. 2 is that in VCM integrated performance test method of the present invention, Hall tests system
Theory diagram.
Fig. 3 is that in VCM integrated performance test method of the present invention, Gyro tests system
Theory diagram.
Fig. 4 is EEPROM test system in VCM integrated performance test method of the present invention
System theory diagram.
Fig. 5 be in VCM integrated performance test method of the present invention VCM concussion test and
Concussion suppression system theory diagram.
Fig. 6 is that in VCM integrated performance test method of the present invention, VCM starting current is surveyed
Test system theory diagram.
Fig. 7 is VCM stroke test system in VCM integrated performance test method of the present invention
System theory diagram.
Fig. 8 is VCM life test system in VCM integrated performance test method of the present invention
System theory diagram.
Fig. 9 is the structured flowchart of VCM integrated performance test system of the present invention.
Figure 10 is the VCM concussion test of VCM integrated performance test system of the present invention
Design sketch.
Figure 11 is the VCM concussion suppression of VCM integrated performance test system of the present invention
Realize design sketch.
Detailed description of the invention
A kind of VCM integrated performance test system, is characterized in that: include to VCM
Two ends execute alive power circuit, the main control unit (MCU) being provided with intervalometer and
Server, VCM that main control unit (MCU) connects test module and survey with VCM
The radium-shine diastimeter that die trial block connects, MCU controls the operation of VCM test module, VCM
Test module can be after completing VCM concussion test and open the feelings of MCU intervalometer
Under condition, by the t of point sometime (0 < t < concussion in first concussion cycle T
Cycle (T)), regulate voltage, little by the input current i of VCM is reduced to some
In the current value (0 < i < initial current (I)) of initial current I, VCM is made to produce one
Downward power offsets VCM vibratory forces upwards, and is gradually increased defeated on this basis
Enter electric current i, final recovery initial current I, it is achieved VCM shakes suppression.
VCM integrated performance test system of the present invention also includes being controlled to run by MCU
EEPROM test module, Hall test module and Gyro test module.
VCM integrated performance test system of the present invention, it is corresponding to a kind of VCM one
Change performance test methods, comprise the steps:
S1: by AD (analog to digital) signals collecting of main control unit (MCU),
Calculate VCM resistance, thus draw the voltage V needing input；
S2: power circuit applies above-mentioned voltage V at VCM two ends so that have in VCM
Corresponding initial current I passes through, the radium-shine diastimeter being connected with VCM test module,
The distance numeral of its output returns to MCU, MCU by VCM test module and calculates
Go out VCM and shake cycle T, and VCM is shaken cycle T upload server；
S3:MCU asks whether test concussion suppression, if so, enters following steps:
S4: open the intervalometer of MCU, certain in first concussion cycle T is for the moment
Between put t (0 < t < concussion cycle (T)), regulate voltage, by the input current i to VCM
It is reduced to some current value (0 < i < initial current (I)) less than initial current I,
VCM is made to produce a downward power to offset VCM vibratory forces upwards, and at this base
Input current i it is gradually increased, final recovery initial current I, it is achieved VCM shakes on plinth
Swing suppression.
In preferred implementation, the distance numeral of radium-shine diastimeter output can change into
Analogue signal shows on oscillograph, oscillograph be used only to display concussion curve and
?.
In preferred implementation, in described step S4, reduce the time point of input current
T is between T/5 and T/4, and the input current i of this time point t is 3I/4.
It is to have one that VCM shakes test: VCM when moving to a corresponding position
The similar machinery concussion with spring, the most also has the concussion cycle of correspondence, and VCM is necessary
Entering certain time can be only achieved a relatively stable period.
The design sketch of VCM concussion test, refer to Figure 10: this figure is VCM input electricity
Stream is 40mA, and the display on oscillograph of the analogue signal of radium-shine output distance is bright
Show and can be seen that VCM is doing the sinusoidal concussion of amplitude decay, and become through after a while
In balance (equilibrium condition peak-to-peak value≤3um)；By the numeral of radium-shine output distance, warp
Cross system-computed and draw concussion cycle and the stabilization time of correspondence, and by corresponding survey
Test result shows upload server while PC.
Concussion suppression realizes: mobile phone terminal is unfavorable for rapid focus due to VCM concussion, because of
And suppress to shake the problem being to need to solve.VCM integration performance of the present invention is surveyed
Test system realizes suppression function substantially.
The design sketch that concussion suppression realizes, refer to Figure 11: in test VCM concussion
Time (electric current 40mA), obtained VCM concussion cycle, the way of system is formerly
Output 40mA to VCM, opens the intervalometer of MCU, when fast close to first 1/4
During the cycle, reduce the input current to VCM, make VCM produce a downward power and come
Offset VCM vibratory forces upwards, and be gradually increased input current on this basis, directly
To 40mA.
The time point reducing input current is different, die-offing of this time point input current
Size degree different, the effect that concussion suppression realizes is different, i.e. required stable time
Between different.
Also include after step S1 that starting current tests S11: continue to increase voltage and make
It is gradually increased by the electric current of VCM, observes whether radium-shine diastimeter has qualitative change？If
It is, the knot that this current value causing radium-shine diastimeter qualitative change is tested as starting current
Really upload server.
For common VCM (in put VCM and there is not starting current, therefore in put VCM this
Item accident), by gradually input forward voltage ascending at VCM two ends, thus
It is gradually increased by the electric current of VCM, makes VCM can move upward under the effect of electric current；
Monitor radium-shine diastimeter alive simultaneously, if the range data that diastimeter is measured
Have significantly rising (getting rid of the rising that shake causes), then this current value is VCM
Starting current, test result is shown upload server while PC.
VCM stroke test S12 is also included: regulation voltage makes to lead to after step S1
The electric current crossing VCM is gradually increased to maximum from the minima that can bear, and observes radium
Penetrate the change in value amount on diastimeter, using this change in value amount as VCM stroke test
Result upload server.
Common VCM, adds forward voltage, makes the electricity of input at VCM two ends in circuit
Flow valuve (Uout/Rvcm) reaches VCM maximum, by the current height of radium-shine reading-
Change in value amount；In put VCM and to input bi-directional voltage respectively, make up to two-way
Big height-change in value amount, is the most highly VCM stroke, and result is shown
Upload server while PC.
Between also including that after step S1 VCM life test S13: regulation voltage is not
Disconnectedly input minimum, the maximum current that can bear to VCM, observe radium-shine diastimeter
With or without big change？If it is not, using the number of times of test as in the result of VCM life test
Pass server.
Common VCM test is continual input 0V, forward at VCM two ends
Imax*Rvcm voltage, so that VCM can cut at two current values of 0/Imax mA
Change operation；In put VCM uninterruptedly input at VCM two ends-Imax*Rvcm and
Imax*Rvcm mA, makes uninterrupted back and forth movement in two current values of VCM, uses radium
Penetrate diastimeter VCM is tested, the distance when radium-shine test is at 0mA Yu 100mA
When being more or less the same, then it is assumed that VCM goes wrong, and by this VCM the most after tested time
Digital display shows upload server while PC.
Also include that the inquiry of step S0:MCU is EEPROM test or VCM test？
If VCM tests, enter step S1；If EEPROM tests S03, including such as
Lower step:
S031 a: random number is write in any one fixing address；
S032: read data from same address；
S033: judge to read data whether with write data consistent？
If so, step S031 is returned；
If it is not, enter step S034: judge whether the frequency of failure exceedes stipulated number？
If it is not, return step S031；
If so, by general to the number of times of read-write, failed number of times and makeing mistakes of calculating
The result upload server that rate is tested as EEPROM.
By above-mentioned steps, VCM integrated performance test system of the present invention passes through IIC
Interface testing EEPROM stability under different speed and read-write number of times.This
Invention VCM integrated performance test system can write not in same address location
Same random number, read-around ratio is relatively the most again, can will appear from writing with reading is inconsistent
Number of times is recorded, and exceedes necessarily until being finally continuously written into and reading inconsistent number of times
Number of times is by this EEPROM end-of-life of identification, data upload service test obtained
Device, and by the probability calculation that makes mistakes out；Simultaneity factor can be verified and write by page and connect
Error probability etc. under the mode such as resume studies.
Before step S0, also include that Hall tests S01, comprise the steps:
S011: orthogonal left and right directions and fore-and-aft direction are in horizontal plane respectively
Reversal is injected to VCM on X/Y direction；
S012: on test X/Y direction, whether Hall has voltage difference？
If so, it is the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, be the result upload server that defective products is tested as Hall using Hall.
By above-mentioned steps, the prison that VCM integrated performance test system of the present invention is real-time
The analogue signal of control Hall output, if once detecting the pressure of analog signal output
Difference exceedes certain limit, and this system is by by reaching the VCM addition electric current in the direction
To rectification effect.The monitoring that rectification effect can also be real-time simultaneously.
Before step S0, also include that Gyro tests S02, comprise the steps:
S021: fixing test system is in vibration table, and monitoring Gyro exports data in real time；
S022: test obtain the angle of Gyro data and vibrations rate whether with vibrations
Platform is consistent？
If so, it is the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, be then the result upload service that defective products is tested as Gyro using Gyro
Device.
By above-mentioned steps, test is by VCM integrated performance test system of the present invention
System platform is fixed in vibrations board (fixed frequency, fixed angle), main control unit
The data of Gyro output are constantly accepted, by serial ports by data by SPI interface
Pass PC, and judge that this Gyro performance is the most normal at PC end.Otherwise pass through performance
Normal Gyro can also be used for the detection of bumper, the vibration frequency of detection vibration table
And whether the angle of vibrations has deviation, can give a warning in time if any deviation.
VCM integrated performance test method of the present invention and system complete VCM concussion survey
After examination and in the case of opening MCU intervalometer, by within first concussion cycle
Point sometime (0 < t < concussion cycle (T)), regulate voltage, defeated by VCM
Enter electric current (i) to be reduced to some (0 < i is < initial less than current value of initial current (I)
Electric current (I)), make VCM produce a downward power to offset VCM vibratory forces upwards,
And it is gradually increased input current on this basis, the final electric current recovering initial input
Value, it is achieved thereby that VCM concussion suppression, i.e. through VCM integration performance of the present invention
The VCM that test system and test is qualified, it is possible to make mobile phone camera rapid focus.
Claims (10)
1. a VCM integrated performance test method, is characterized in that: include as follows
Step:
S1: by AD (analog to digital) signals collecting of main control unit (MCU),
Calculate VCM resistance, thus draw the voltage V needing input；
S2: power circuit applies above-mentioned voltage V at VCM two ends so that have in VCM
Corresponding initial current I passes through, the radium-shine diastimeter being connected with VCM test module,
The distance numeral of its output returns to MCU, MCU by VCM test module and calculates
Go out VCM and shake cycle T, and VCM is shaken cycle T upload server；
S3:MCU asks whether test concussion suppression, if so, enters following steps:
S4: open the intervalometer of MCU, certain in first concussion cycle T is for the moment
Between put t (0 < t < concussion cycle (T)), regulate voltage, by the input current i to VCM
It is reduced to some current value (0 < i < initial current (I)) less than initial current I,
VCM is made to produce a downward power to offset VCM vibratory forces upwards, and at this base
Input current i it is gradually increased, final recovery initial current I, it is achieved VCM shakes on plinth
Swing suppression.
VCM integrated performance test method the most according to claim 1, its
Feature is: reduce in described step S4 the time point t of input current be positioned at T/5 with
Between T/4, the input current i of this time point t is 3I/4.
VCM integrated performance test method the most according to claim 1, its
Feature is: also include after step S1 that starting current tests S11: continue to increase electricity
Pressure makes the electric current by VCM be gradually increased, and observes whether radium-shine diastimeter has qualitative change？
If so, this current value causing radium-shine diastimeter qualitative change is tested as starting current
Result upload server.
VCM integrated performance test method the most according to claim 1, its
Feature is: also include VCM stroke test S12: regulation voltage after step S1
Make to be gradually increased to maximum by the electric current of VCM from the minima that can bear, see
Examine the change in value amount on radium-shine diastimeter, using this change in value amount as VCM stroke
The result upload server of test.
VCM integrated performance test method the most according to claim 1, its
Feature is: also include VCM life test S13: regulation voltage after step S1
Input minimum, the maximum current that can bear incessantly to VCM, observe radium-shine survey
Distance meter is with or without big change？If it is not, using the number of times of test as the knot of VCM life test
Really upload server.
VCM integrated performance test method the most according to claim 1, its
Feature is: also include that the inquiry of step S0:MCU is EEPROM test or VCM survey
Examination？If VCM tests, enter step S1；If EEPROM tests S03, bag
Include following steps:
S031 a: random number is write in any one fixing address；
S032: read data from same address；
S033: judge to read data whether with write data consistent？
If so, step S031 is returned；
If it is not, enter step S034: judge whether the frequency of failure exceedes stipulated number？
If it is not, return step S031；
If so, by general to the number of times of read-write, failed number of times and makeing mistakes of calculating
The result upload server that rate is tested as EEPROM.
VCM integrated performance test method the most according to claim 6, its
Feature is: also included that before step S0 Hall tests S01, comprises the steps:
S011: orthogonal left and right directions and fore-and-aft direction are in horizontal plane respectively
Reversal is injected to VCM on X/Y direction；
S012: on test X/Y direction, whether Hall has voltage difference？
If so, it is the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, be the result upload server that defective products is tested as Hall using Hall.
VCM integrated performance test method the most according to claim 6, its
Feature is: also included that before step S0 Gyro tests S02, comprises the steps:
S021: fixing test system is in vibration table, and monitoring Gyro exports data in real time；
S022: test obtain the angle of Gyro data and vibrations rate whether with vibrations
Platform is consistent？
If so, it is the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, be then the result upload service that defective products is tested as Gyro using Gyro
Device.
9. a VCM integrated performance test system, is characterized in that: include to VCM
Two ends execute alive power circuit, the main control unit (MCU) being provided with intervalometer and
Server, VCM that main control unit (MCU) connects test module and survey with VCM
The radium-shine diastimeter that die trial block connects, MCU controls the operation of VCM test module, VCM
Test module can be after completing VCM concussion test and open the feelings of MCU intervalometer
Under condition, by the t of point sometime (0 < t < concussion in first concussion cycle T
Cycle (T)), regulate voltage, little by the input current i of VCM is reduced to some
In the current value (0 < i < initial current (I)) of initial current I, VCM is made to produce one
Downward power offsets VCM vibratory forces upwards, and is gradually increased defeated on this basis
Enter electric current i, final recovery initial current I, it is achieved VCM shakes suppression.
VCM integrated performance test system the most according to claim 9, its
Feature is: also include that the EEPROM being controlled to run by MCU tests module, Hall surveys
Die trial block and Gyro test module.
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| CN109981869A (en) * | 2017-12-27 | 2019-07-05 | 宁波舜宇光电信息有限公司 | Method and test equipment based on image technique measurement lens actuator cycle of oscillation |
| CN114137266A (en) * | 2021-10-11 | 2022-03-04 | 昆山丘钛微电子科技股份有限公司 | Separable power supply circuit board, test tool and adapter plate |
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| CN105785707B (en) | 2018-11-02 |
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