CN105785707B - VCM integrated performance test methods and system - Google Patents
VCM integrated performance test methods and system Download PDFInfo
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- CN105785707B CN105785707B CN201610348070.5A CN201610348070A CN105785707B CN 105785707 B CN105785707 B CN 105785707B CN 201610348070 A CN201610348070 A CN 201610348070A CN 105785707 B CN105785707 B CN 105785707B
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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
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Abstract
A kind of VCM integrated performance test methods, include the following steps：S1：By the AD signal acquisitions of MCU, VCM resistance values are calculated, to obtain voltage V that needs input；S2：Power circuit applies above-mentioned voltage V at the both ends VCM, so that there is corresponding initial current I to pass through in VCM, the radium-shine rangefinder being connect with VCM test modules, its distance number exported returns to MCU by VCM test modules, VCM concussion cycle Ts are calculated in MCU, and VCM is shaken cycle T upload server；S3：MCU asks whether that test concussion inhibits, if so, into following steps：S4：Open the timer of MCU, in the sometime point t that first shakes in cycle T, adjust voltage, some current value for being less than initial current I will be reduced to the input current i of VCM, VCM is set to generate a downward power to offset the upward vibratory forces of VCM, and it is gradually increased input current i on this basis, and it is final to restore initial current I, realize that VCM concussions inhibit.
Description
Technical field
The present invention relates to a kind of VCM integrated performance test methods and system, especially one kind capable of completing the concussion period
The VCM integrated performance test methods and system that concussion inhibits are realized after test.
Background technology
VCM is that all there are one the similar machineries with spring to shake when moving to a corresponding position, equally also there is correspondence
The concussion period, VCM must into cross certain time can be only achieved a relatively stable period.Mobile phone terminal is unfavorable for due to VCM concussions
Rapid focus, thus it is a problem for needing to solve to inhibit concussion.
Invention content
In order to overcome drawbacks described above, a kind of VCM integrated performance test methods of present invention offer and system, the VCM mono-
Body performance test methods and system can be completed to continue to realize that concussion inhibits after shaking period measuring.
The present invention in order to solve its technical problem used by technical solution one be：A kind of integrated performance test sides VCM
Method includes the following steps：S1：By AD (analog to digital) signal acquisition of main control unit (MCU), VCM resistance values are calculated, from
And obtain the voltage V that needs input；S2：Power circuit applies above-mentioned voltage V at the both ends VCM so that has in VCM corresponding initial
Electric current I passes through, the radium-shine rangefinder being connect with VCM test modules, and the distance number of output is returned to by VCM test modules
VCM concussion cycle Ts are calculated in MCU, MCU, and VCM is shaken cycle T upload server；S3：MCU asks whether test concussion
Inhibit, if so, into following steps：S4：The timer for opening MCU, in the sometime point t (0 that first shakes in cycle T<
t<Shake the period (T)), voltage is adjusted, some current value (0 for being less than initial current I will be reduced to the input current i of VCM
<i<Initial current (I)), so that VCM is generated a downward power to offset the upward vibratory forces of VCM, and gradually add on this basis
Big input current i, it is final to restore initial current I, realize that VCM concussions inhibit.
As a further improvement on the present invention, the time point t for input current being reduced in the step S4 is located at T/5 and T/4
Between, the input current i of time point t is 3I/4.
As a further improvement on the present invention, after step S1 further include starting current test S11：Continuing to increase voltage makes
Gradually increased by the electric current of VCM, observes whether radium-shine rangefinder has qualitative change？If so, being somebody's turn to do for radium-shine rangefinder qualitative change will be caused
The result upload server that current value is tested as starting current.
As a further improvement on the present invention, after step S1 further include VCM stroke tests S12：Adjusting voltage makes to lead to
The electric current for crossing VCM is gradually increased to maximum value from the minimum value that can be born, and observes the numerical value change amount on radium-shine rangefinder, will
Result upload server of the numerical value change amount as VCM stroke tests.
As a further improvement on the present invention, after step S1 further include VCM life tests S13：Between adjusting voltage not
The minimum that can be born, maximum current disconnectedly are inputted to VCM, observing radium-shine rangefinder, whether there is or not big variations？If it is not, by time of test
Result upload server of the number as VCM life tests.
As a further improvement on the present invention, further include step S0：MCU inquiries are EEPROM tests or VCM tests？If
It is VCM tests, enters step S1；If EEPROM tests S03, include the following steps：
S031：One random number is written in any one fixing address；
S032：Data are read in the same address；
S033：Judge whether reading data are consistent with write-in data？
If so, return to step S031；
If it is not, entering step S034：Judge whether the frequency of failure is more than stipulated number？
If it is not, return to step S031；
If so, the knot that the number of read-write, the number to fail and the error probability being calculated are tested as EEPROM
Fruit upload server.
As a further improvement on the present invention, further include Hall test S01 before step S0, include the following steps：
S011：It is injected just to VCM on orthogonal left and right directions and front-rear direction, that is, directions X/Y in the horizontal plane respectively
Negative current；
S012：Whether Hall has voltage difference on the directions test X/Y？
If so, being the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, being the result upload server that defective products is tested as Hall using Hall.
As a further improvement on the present invention, further include Gyro test S02 before step S0, include the following steps：
S021：Fixed test system monitors Gyro output datas in real time in shake table；
S022：Whether the angle and vibrations rate of test acquisition Gyro data are consistent with bumper？
If so, being the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, being then result upload server that defective products is tested as Gyro using Gyro.
The present invention in order to solve its technical problem used by technical solution second is that：A kind of VCM integrated performance tests system
System includes applying alive power circuit, the main control unit (MCU) equipped with timer and main control unit (MCU) to the both ends VCM
Server, VCM test modules and the radium-shine rangefinder being connect with VCM test modules of connection, MCU control VCM test modules
Operation, VCM test modules can complete VCM concussion test after and open MCU timers in the case of, by first
Sometime point t (0 in a concussion cycle T<t<Shake the period (T)), voltage is adjusted, the input current i of VCM will be reduced to
Some is less than the current value (0 of initial current I<i<Initial current (I)), make VCM generate a downward power come offset VCM to
On vibratory forces, and be gradually increased input current i on this basis, it is final to restore initial current I, realize that VCM concussions inhibit.
As a further improvement on the present invention, further include being tested mould by the EEPROM test modules of MCU control operations, Hall
Block and Gyro test modules.
The beneficial effects of the invention are as follows：VCM integrated performance test methods of the present invention and system complete VCM concussion tests
Later and in the case of opening MCU timers, pass through the sometime point (0 shaken at first in the period<t<Shake the period
(T)) voltage, is adjusted, some current value (0 for being less than initial current (I) will be reduced to the input current (i) of VCM<i<Just
Beginning electric current (I)), so that VCM is generated a downward power to offset the upward vibratory forces of VCM, and be gradually increased on this basis defeated
Enter electric current, the final current value for restoring initial input inhibits to realize VCM concussions, that is, passes through VCM integrations of the present invention
The VCM of energy test system and test qualification, can make mobile phone camera rapid focus.
Description of the drawings
Fig. 1 is the total system functional block diagram of VCM integrated performance test methods of the present invention.
Fig. 2 is Hall test principle block diagrams in VCM integrated performance test methods of the present invention.
Fig. 3 is Gyro test principle block diagrams in VCM integrated performance test methods of the present invention.
Fig. 4 is EEPROM test principle block diagrams in VCM integrated performance test methods of the present invention.
Fig. 5 is VCM concussions test and concussion suppression system functional block diagram in VCM integrated performance test methods of the present invention.
Fig. 6 is VCM starting current test principle block diagrams in VCM integrated performance test methods of the present invention.
Fig. 7 is VCM stroke test system principle diagrams in VCM integrated performance test methods of the present invention.
Fig. 8 is VCM life-span test system functional block diagrams in VCM integrated performance test methods of the present invention.
Fig. 9 is the structure diagram of VCM integrated performance tests system of the present invention.
Figure 10 is the VCM concussion test design sketch of VCM integrated performance tests system of the present invention.
Figure 11 is that the VCM concussions of VCM integrated performance tests system of the present invention inhibit to realize design sketch.
Specific implementation mode
A kind of VCM integrated performance tests system, it is characterized in that：Including applying alive power circuit to the both ends VCM, setting
There are the main control unit (MCU) of timer, the server being connect with main control unit (MCU), VCM test modules and is tested with VCM
The radium-shine rangefinder of module connection, MCU control the operation of VCM test modules, and VCM test modules can be surveyed completing VCM concussions
After examination and in the case of opening MCU timers, by shaking the sometime point t (0 in cycle T at first<t<Concussion week
Phase (T)), voltage is adjusted, some current value (0 for being less than initial current I will be reduced to the input current i of VCM<i<Initially
Electric current (I)), so that VCM is generated a downward power to offset the upward vibratory forces of VCM, and be gradually increased input on this basis
Electric current i, it is final to restore initial current I, realize that VCM concussions inhibit.
VCM integrated performance tests system of the present invention further includes being surveyed by the EEPROM test modules of MCU control operations, Hall
Die trial block and Gyro test modules.
VCM integrated performance tests system of the present invention corresponds to a kind of VCM integrated performance test methods, including such as
Lower step：
S1：By AD (analog to digital) signal acquisition of main control unit (MCU), VCM resistance values are calculated, are needed to obtain
The voltage V to be inputted；
S2：Power circuit applies above-mentioned voltage V at the both ends VCM so that and there is corresponding initial current I to pass through in VCM, with
The distance number of the radium-shine rangefinder of VCM test modules connection, output returns to MCU by VCM test modules, and MCU is calculated
It show that VCM shakes cycle T, and VCM is shaken into cycle T upload server；
S3：MCU asks whether that test concussion inhibits, if so, into following steps：
S4：The timer for opening MCU, in the sometime point t (0 that first shakes in cycle T<t<Shake the period (T)),
Voltage is adjusted, some current value (0 for being less than initial current I will be reduced to the input current i of VCM<i<Initial current
(I)) so that VCM is generated a downward power to offset the upward vibratory forces of VCM, and be gradually increased input current on this basis
I, it is final to restore initial current I, realize that VCM concussions inhibit.
In preferred embodiment, the distance number of radium-shine rangefinder output can be converted to analog signal and be shown on oscillograph
Show, oscillograph is used only to display concussion curve.
In preferred embodiment, in the step S4 reduce input current time point t between T/5 and T/4, this when
Between point t input current i be 3I/4.
VCM concussion tests：VCM is that all there are one the similar machineries with spring to shake when moving to a corresponding position,
Equally also there are corresponding concussion period, VCM that must can be only achieved a relatively stable period into certain time is spent.
The design sketch of VCM concussion tests, please refers to Fig.1 0：The figure is that VCM input currents are 40mA, radium-shine output distance
Display of the analog signal on oscillograph, hence it is evident that it can be seen that VCM shakes in the sine for doing amplitude decaying, and through after a period of time
It tends to balance (equilibrium condition peak-to-peak value≤3um)；By the number of radium-shine output distance, corresponding concussion is obtained by system-computed
Period and stabilization time, and include upload server while PC machine by corresponding test result.
Concussion inhibits to realize：Mobile phone terminal inhibits concussion to need to solve since VCM concussions are unfavorable for rapid focus
One problem.VCM integrated performance tests system of the present invention is realized substantially inhibits function.
Concussion inhibits the design sketch realized, please refers to Fig.1 1：When testing VCM concussions (electric current 40mA), VCM shakes have been obtained
The way in the period swung, system is first output 40mA to VCM, the timer of MCU is opened, when soon close to first 1/4 period
When, the input current to VCM is reduced, so that VCM is generated a downward power to offset the upward vibratory forces of VCM, and basic herein
On be gradually increased input current, until 40mA.
The time point for reducing input current is different, and the size degree of input current to die-off is different at the time point, concussion
Inhibit the effect realized different, i.e., required stabilization time is different.
Further include starting current test S11 after step S1：Continuing to increase voltage makes gradually to increase by the electric current of VCM,
Observe whether radium-shine rangefinder has qualitative change？If so, the current value of radium-shine rangefinder qualitative change will be caused to be tested as starting current
Result upload server.
For common VCM (in set VCM and be not present starting current, therefore in set VCM this accident), by the both ends VCM by
It is small to make VCM that be transported upwards under the action of electric current to gradually increase by the electric current of VCM to big gradually input forward voltage
It is dynamic；Alive while monitoring radium-shine rangefinder, if the range data that rangefinder is measured has apparent rising (to exclude shake
Caused rising), then the current value is the starting current of VCM, includes upload server while PC machine by test result.
Further include VCM stroke tests S12 after step S1：Adjusting voltage makes through the electric current of VCM from can bear
Minimum value is gradually increased to maximum value, observes the numerical value change amount on radium-shine rangefinder, using the numerical value change amount as VCM strokes
The result upload server of test.
Common VCM is added forward voltage at the both ends VCM in circuit, the current value (Uout/Rvcm) of input is made to reach VCM
Maximum value reads current height-numerical value change amount by radium-shine；In set VCM and to input bi-directional voltage respectively, make up to double
To maximum height-numerical value change amount, height is VCM strokes at this time, and the results are shown in upload servers while PC machine.
Further include VCM life tests S13 after step S1：Adjust what voltage can be born to VCM inputs incessantly
Minimum, maximum current, observing radium-shine rangefinder, whether there is or not big variations？If it is not, using the number of test as the result of VCM life tests
Upload server.
Common VCM tests are in the continual input 0V in the both ends VCM, positive Imax*Rvcm voltages, to allow VCM to exist
Two current value switchover operations of 0/Imax mA；In set VCM in the uninterrupted input-Imax*Rvcm and Imax*Rvcm in the both ends VCM
MA is made uninterrupted back and forth movement in two current values of VCM, is tested VCM using radium-shine rangefinder, when radium-shine test exists
When distance is not much different when 0mA and 100mA, then it is assumed that VCM goes wrong, and includes in PC by the numbers of the VCM after tested
Upload server while machine.
Further include step S0：MCU inquiries are EEPROM tests or VCM tests？If VCM is tested, S1 is entered step；If
It is EEPROM test S03, includes the following steps：
S031：One random number is written in any one fixing address；
S032：Data are read in the same address；
S033：Judge whether reading data are consistent with write-in data？
If so, return to step S031；
If it is not, entering step S034：Judge whether the frequency of failure is more than stipulated number？
If it is not, return to step S031；
If so, the knot that the number of read-write, the number to fail and the error probability being calculated are tested as EEPROM
Fruit upload server.
Through the above steps, VCM integrated performance tests system of the present invention by IIC interface testings EEPROM in difference
Stability under speed and read-write number.VCM integrated performance tests system of the present invention can be to writing in the same address location
Enter different random numbers, then read and compare again, can will occur being written recording with reading inconsistent number, until finally connecting
The EEPROM end-of-lifes will be assert into the number inconsistent with reading more than certain number by continuing, in the data that test is obtained
Server is passed, and the probability calculation of error is come out；Simultaneity factor can verify the error write by page and continuously read etc. under modes
Probability etc..
Further include Hall test S01 before step S0, includes the following steps：
S011：It is injected just to VCM on orthogonal left and right directions and front-rear direction, that is, directions X/Y in the horizontal plane respectively
Negative current；
S012：Whether Hall has voltage difference on the directions test X/Y？
If so, being the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, being the result upload server that defective products is tested as Hall using Hall.
Through the above steps, VCM integrated performance tests system of the present invention monitors the analog signal of Hall outputs in real time,
If once detecting that the pressure difference of analog signal output is more than a certain range, which will be by being added VCM in this direction
Electric current reaches rectification effect.Rectification effect can also monitor in real time simultaneously.
Further include Gyro test S02 before step S0, includes the following steps：
S021：Fixed test system monitors Gyro output datas in real time in shake table；
S022：Whether the angle and vibrations rate of test acquisition Gyro data are consistent with bumper？
If so, being the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, being then result upload server that defective products is tested as Gyro using Gyro.
Through the above steps, testing system platform is fixed on vibrations board by VCM integrated performance tests system of the present invention
On (fixed frequency, fixed angle), main control unit constantly receives the data of Gyro outputs by SPI interface, will be counted by serial ports
According to upload PC, and judge whether the Gyro performances are normal at the ends PC.Otherwise bumper can also be used for by the normal Gyro of performance
Detection, whether the angle of the vibration frequency and vibrations that detect shake table have deviation, can be given a warning in time if any deviation.
VCM integrated performance test methods of the present invention and system after completing VCM concussion tests and open MCU timers
In the case of, by shaking the sometime point (0 in the period at first<t<Shake the period (T)), voltage is adjusted, it will be to VCM
Input current (i) be reduced to some be less than initial current (I) current value (0<i<Initial current (I)), so that VCM is generated one
A downward power offsets the upward vibratory forces of VCM, and is gradually increased input current on this basis, finally restores initial input
Current value, to realize VCM concussion inhibit, that is, pass through VCM integrated performance tests system testing of the present invention qualification
VCM can make mobile phone camera rapid focus.
Claims (10)
1. a kind of VCM integrated performance test methods, it is characterized in that：Include the following steps：
S1：By the analog to digital signal acquisition of main control unit, VCM resistance values are calculated, to obtain voltage V that needs input,
And ask whether successively carry out VCM concussion test, whether starting current test, whether carry out VCM stroke tests and whether into
Row VCM life tests；If being tested the result is that carrying out VCM concussions for inquiry, enters step S2；
S2：Power circuit applies above-mentioned voltage V at the both ends VCM so that has corresponding initial current I to pass through in VCM, is surveyed with VCM
The radium-shine rangefinder of die trial block connection, the distance number of output return to main control unit, main control unit by VCM test modules
VCM concussion cycle Ts are calculated, and VCM is shaken into cycle T upload server；
S3：Main control unit asks whether that test concussion inhibits, if so, into following steps：
S4：The timer for opening main control unit adjusts voltage in the sometime point t that first shakes in cycle T, will be to VCM
Input current i be reduced to some be less than initial current I current value, make VCM generate a downward power come offset VCM to
On vibratory forces, and be gradually increased input current i on this basis, it is final to restore initial current I, realize that VCM concussions inhibit.
2. VCM integrated performance test methods according to claim 1, it is characterized in that：Input is reduced in the step S4
For the time point t of electric current between T/5 and T/4, the input current i of time point t is 3I/4.
3. VCM integrated performance test methods according to claim 1, it is characterized in that：If step S1 inquiry the result is that
Starting current is tested, then enters step S11：Continuing to increase voltage makes gradually to increase by the electric current of VCM, observes radium-shine rangefinder
Whether qualitative change is had；If so, the result upload server that the current value for causing radium-shine rangefinder qualitative change is tested as starting current.
4. VCM integrated performance test methods according to claim 1, it is characterized in that：If step S1 inquiry the result is that
VCM stroke tests are carried out, then enter step S12：Adjusting voltage makes gradually to increase from the minimum value that can be born by the electric current of VCM
Maximum value is arrived greatly, the numerical value change amount on radium-shine rangefinder is observed, using the numerical value change amount as in the result of VCM stroke tests
Pass server.
5. VCM integrated performance test methods according to claim 1, it is characterized in that：If step S1 inquiry the result is that
VCM life tests are carried out, then enter step S13：It is electric to adjust minimum, maximum that voltage can be born to VCM inputs incessantly
Stream, observing radium-shine rangefinder, whether there is or not big variations；If it is not, using the number of test as the result upload server of VCM life tests.
6. VCM integrated performance test methods according to claim 1, it is characterized in that：Further include step before step S1
Rapid S0：Main control unit inquiry is EEPROM tests or VCM tests；If VCM is tested, S1 is entered step；If EEPROM is surveyed
S03 is tried, is included the following steps：
S031：One random number is written in any one fixing address；
S032：Data are read in the same address；
S033：Judge whether reading data are consistent with write-in data；
If so, return to step S031；
If it is not, entering step S034：Judge whether the frequency of failure is more than stipulated number；
If it is not, return to step S031；
If so, in the result that the number of read-write, the number to fail and the error probability being calculated are tested as EEPROM
Pass server.
7. VCM integrated performance test methods according to claim 6, it is characterized in that：Further include before step S0
Hall tests S01, includes the following steps：
S011：It is injected in the horizontal plane to VCM in orthogonal left and right directions and front-rear direction, that is, X-direction and Y-direction respectively
Reversal；
S012：Whether Hall has voltage difference in test X-direction and Y-direction；
If so, being the result upload server that non-defective unit is tested as Hall using Hall；
If it is not, being the result upload server that defective products is tested as Hall using Hall.
8. VCM integrated performance test methods according to claim 6, it is characterized in that：Further include before step S0
Gyro tests S02, includes the following steps：
S021：Fixed test system monitors Gyro output datas in real time in shake table；
S022：Whether the angle and vibrations rate of test acquisition Gyro data are consistent with bumper；
If so, being the result upload server that non-defective unit is tested as Gyro using Gyro；
If it is not, being then result upload server that defective products is tested as Gyro using Gyro.
9. a kind of VCM integrated performance tests system, it is characterized in that：Including applying alive power circuit to the both ends VCM, being equipped with
The main control unit of timer, the server being connect with main control unit, VCM test modules and the radium being connect with VCM test modules
Penetrate rangefinder, main control unit controls the operation of VCM test modules, VCM test modules can after completing VCM concussion tests and
In the case of opening main control unit timer, by shaking the sometime point t in cycle T at first, adjusting voltage will be right
The input current i of VCM is reduced to some current value for being less than initial current I, and VCM is made to generate a downward power to offset
Vibratory forces upward VCM, and it is gradually increased input current i on this basis, it is final to restore initial current I, realize VCM concussion suppressions
System.
10. VCM integrated performance tests system according to claim 9, it is characterized in that：Further include being controlled by main control unit
EEPROM test modules, Hall test modules and the Gyro test modules of operation.
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| CN109981869B (en) * | 2017-12-27 | 2020-10-02 | 宁波舜宇光电信息有限公司 | Method and test equipment for measuring oscillation period of lens actuator based on image technology |
| CN114137266B (en) * | 2021-10-11 | 2024-06-25 | 昆山丘钛微电子科技股份有限公司 | Detachable power supply circuit board, test fixture and adapter plate |
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| CN102468803A (en) * | 2010-11-05 | 2012-05-23 | 天钰科技股份有限公司 | Control method of voice coil motor and lens focusing system |
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| CN103795320A (en) * | 2014-03-10 | 2014-05-14 | 绍兴光大芯业微电子有限公司 | Voice coil motor driving method for achieving quick focusing |
| CN104320110A (en) * | 2014-10-29 | 2015-01-28 | 芯荣半导体有限公司 | Voice coil motor shaping signal and driving control method and driving chip circuit |
| CN104467612A (en) * | 2014-11-27 | 2015-03-25 | 矽力杰半导体技术(杭州)有限公司 | Voice coil motor control method and lens focusing system |
| CN105305912A (en) * | 2015-09-29 | 2016-02-03 | 芯荣半导体有限公司 | Input signal shaping method of voice coil motor, driving circuit and driving method thereof |
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