CN107105562B - System and method based on cell voltage control flash lamp output electric current - Google Patents
System and method based on cell voltage control flash lamp output electric current Download PDFInfo
- Publication number
- CN107105562B CN107105562B CN201710508756.0A CN201710508756A CN107105562B CN 107105562 B CN107105562 B CN 107105562B CN 201710508756 A CN201710508756 A CN 201710508756A CN 107105562 B CN107105562 B CN 107105562B
- Authority
- CN
- China
- Prior art keywords
- flash lamp
- current
- value
- cell voltage
- electric current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- 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
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The present invention relates to a kind of system and methods based on cell voltage control flash lamp output electric current, the mapping relations between cell voltage V and flash lamp maximum current threshold value A are had recorded in the mapping table, and it is corresponding with the maximum current threshold value A of multiple grades that cell voltage V is divided into multistage；According to mapping table, obtain flash lamp maximum current threshold value Ac corresponding to the cell voltage Vc with current real-time detection, it is set as with current flash lamp maximum current A-max and for being compared with current electric current of flash lamp value a, it powers after being updated according to comparison result using numerical value of the flash lamp maximum current A-max to electric current of flash lamp value a for flash lamp, or current electric current of flash lamp value a is maintained to be used to power for flash lamp.The present invention is accurately controlled in such a way that multistage corrects electric current of flash lamp in real time, to flash lamp, it is ensured that mainboard steady operation when low-voltage, more by the Function of flash lamp to maximization.
Description
Technical field
It is the present invention relates to flash lamp control field, in particular to a kind of that electric current is exported based on cell voltage control flash lamp
System and method.
Background technique
For the smart machines such as mobile phone, camera is using more frequent function, and flash lamp is as camera
Important additional device is opened under the bad environment of light, is played a crucial role to photographic quality.When preceding flash lamp
Function is more and more abundant and perfect, such as monochromatic warm flash of light, double-colored temperature flash lamp, four flash lamp of double-colored temperature etc., it is already possible to
Suitable light filling is provided for camera under various complexity light environments, takes the photo of true exquisiteness.Certainly, perfect sudden strain of a muscle is realized
On the one hand light lamp effect will control flash lamp light and be close with environment colour temperature；On the other hand, also to guarantee the load of flash lamp
Within mainboard tolerance range, for a certain degree, the latter seems more important.
For flash lamp as a luminescent device, consumption stream is serious.Especially for meeting African country's user's preferences bright flash
When the demand of lamp, producer is often that bigger driving current is arranged in flash lamp.But the drawbacks of high current, it is power consumption first
Fastly, cell voltage decline is fast；Followed by battery capacity deficiency when be difficult to provide stable transient high-current, will lead to mainboard appearance
Various problems, influence photographic quality.As it can be seen that the importance for carrying out intelligentized control method to electric current of flash lamp gradually shows.
In addition, the normal work of flash lamp, also there are certain requirements cell voltage.It is opened if it is when cell voltage is too low
It opens flash lamp to take pictures, the flash luminance of needs may be not achieved in one side flash lamp；The excessive consumption of another aspect flash lamp flows, again
It may cause main board power supply deficiency and restart, or face the risk of certain device job insecurities.
Current controlling mechanism has done a under-voltage protection just for cell voltage.As shown in Figure 1, being cell voltage
Preset low voltage threshold, with this by cell voltage V' be divided into height two sections, and with flash lamp maximum current threshold value A'
Form mapping relations.Wherein, low voltage threshold cell voltage below is corresponded into the first current threshold A1', by low-voltage threshold
The cell voltage of value or more corresponds to the second current threshold A2', A1'< A2'.Receiving the instruction opening flash lamp and taking pictures
When, electric current of flash lamp value a' need to be configured.
When the cell voltage that real-time detection arrives is lower than low voltage threshold, setting flash lamp maximum current A'-max=A1'；
Otherwise, flash lamp maximum current A'-max=A2 is set.Whether the set electric current of flash lamp value a' of judgement is greater than flash lamp most
High current A'-max, if it is, using flash lamp maximum current A'-max as current electric current of flash lamp, it otherwise, will be set
The electric current of flash lamp value a' set is as current electric current of flash lamp.Flash lamp is realized as it can be seen that the prior art is based on cell voltage
Control means, it is relatively simple, although can detecte battery low-voltage, and protect mainboard to a certain extent, be far from reaching
To desired effect, need to improve.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of based on cell voltage control flash lamp output electric current
System and method accurately controls flash lamp, it is ensured that when low-voltage in such a way that multistage corrects electric current of flash lamp in real time
Mainboard steady operation, more by the Function of flash lamp to maximization.
In order to achieve the above object, a technical solution of the invention is to provide a kind of based on cell voltage control flash lamp
The method for exporting electric current, it includes following procedure:
Initial setting up is carried out to electric current of flash lamp value a；
The current cell voltage Vc of real-time detection, by inquiry record cell voltage V and flash lamp maximum current threshold value A it
Between mapping relations mapping table, obtain with flash lamp maximum current threshold value Ac corresponding to current cell voltage Vc, set
It is set to and flash lamp maximum current A-max corresponding to current cell voltage Vc；
Current electric current of flash lamp value a is compared with flash lamp maximum current A-max:
If judging a > A-max, it is updated using numerical value of the flash lamp maximum current A-max to electric current of flash lamp value a,
And it powers by flash lamp of updated electric current of flash lamp value a；
If judging a≤A-max, power by flash lamp of current electric current of flash lamp value a.
Optionally, in the mapping table, cell voltage V points are multiple grades, wherein the battery electricity of every two adjacent rank
Pressure V-arrangement is segmented at a corresponding voltage；Flash lamp maximum current threshold value A is divided into multiple grades, multiple with cell voltage V
Voltage segmentation is corresponding.
Optionally, power for flash lamp, after opening flash lamp, circulation execute the current cell voltage Vc of real-time detection and
Thereafter operating process.
Optionally, the current electric current of flash lamp value a being compared for the first time with flash lamp maximum current A-max, is initial
The electric current of flash lamp value a of setting；
Other than for the first time it is any other it is primary in, the current flash lamp that is compared with flash lamp maximum current A-max
Current value a, be by it is preceding it is primary judge after be used to the electric current of flash lamp value a that powers as flash lamp.
Optionally, the initial setting up carried out to electric current of flash lamp value a, is opened based on the instruction of the unlatching flash lamp received
Dynamic.
Optionally, it preceding opens based on the random number or a preset default value in setting range or once
Current value when opening flash lamp or preceding primary current value when closing flash lamp, initially to be set to electric current of flash lamp value a
It sets.
Another technical solution of the invention is to provide a kind of system based on cell voltage control flash lamp output electric current,
It includes:
Control unit, in system therewith signal connection controlled with lower unit；
Detection unit is measured in real time current cell voltage Vc；
Storage unit, the mapping table of storage, record have reflecting between cell voltage V and flash lamp maximum current threshold value A
Penetrate relationship；
Query unit obtains and the maximum electricity of flash lamp corresponding to current cell voltage Vc from the storage unit
Stream threshold value A c is sent to control unit, is set as described control unit and current battery flash lamp maximum current threshold value Ac
Flash lamp maximum current A-max corresponding to voltage Vc；
Comparing unit obtains the sudden strain of a muscle of flash lamp maximum current A-max and current setting respectively from described control unit
Light lamp current value a is compared, and provides the judging result of a > A-max to drive described control unit to use the maximum electricity of flash lamp
Stream A-max is updated the numerical value of electric current of flash lamp value a, or provides the judging result of a≤A-max to drive the control
Unit maintains current electric current of flash lamp value a；
The current regulation unit of flash lamp, according to the judging result that the comparing unit provides, with updated flash of light
The lamp current value a or electric current of flash lamp value a of maintenance is flash lamp power supply.
Optionally, the system further includes the input unit connecting with described control unit signal, receives user
Instruction send control unit to, and receive the parameter of user setting and send control unit or storage unit to；
The instruction of the user, the instruction comprising opening flash lamp；
Set parameter, the mapping in containment mapping table between cell voltage V and flash lamp maximum current threshold value A are closed
System；Wherein, cell voltage V points are multiple grades, and the cell voltage V-arrangement of every two adjacent rank is at a corresponding voltage point
Section；Flash lamp maximum current threshold value A is divided into multiple grades, corresponding with the segmentation of multiple voltages of cell voltage V.
Optionally, the instruction of the unlatching flash lamp that described control unit is received based on it starts, and is based on setting range
An interior random number or a preset default value or preceding primary current value or preceding primary when opening flash lamp
Current value when flash lamp is closed, initial setting up is carried out to electric current of flash lamp value a；
To numerical value needed for electric current of flash lamp value a initial setting up, is inputted by the input unit, be sent to control unit
Or storage unit storage record, it is read when comparing for the first time and is sent to comparing unit.
Optionally, the current flash lamp electricity that comparing unit is used to be compared with flash lamp maximum current A-max for the first time
Flow valuve a is the electric current of flash lamp value a of initial setting up；Other than for the first time it is any other it is primary in, be used to and flash lamp maximum current
The current electric current of flash lamp value a that A-max is compared, be by it is preceding it is primary judge after be used to the flash lamp powered as flash lamp
Current value a.
Optionally, the system further includes the timing unit connecting with control unit signal, any one to flash lamp
Enabling time after secondary opening carries out timing, make the comparing unit by this actual enabling time of flash lamp with preset
Time threshold be compared, when judging that this actual enabling time reaches time threshold, make system finishing to flash lamp
The flash lamp is closed in the control of electric current.
Optionally, the system further includes the illumination photometry unit connecting with control unit signal, by it to environment
The illumination photometry result that brightness is acquired detection is sent to described control unit；The comparing unit reads illumination photometry knot
Fruit carries out following control for control unit and provides guidance to be compared with preset illumination threshold；
Described control unit exports corresponding signal to limit alternative flash lamp maximum current threshold value in mapping table
Grade makes the grade of alternative flash lamp maximum current threshold value match with current ambient brightness and cell voltage；Or
Person, described control unit export corresponding signal, to flash lamp and can according to ambient brightness adjust institute's electricity demand other equipment
Carry out linkage control.
Compared with the prior art, the advantages of the present invention are as follows a kind of control electric current of flash lamp by realizing with cell voltage
Cell voltage is divided multiple grades and mapped one by one with electric current of flash lamp by scheme；During flash lamp operation in real time
Battery voltage value is measured, according to voltage value, limits output to the maximum current of flash lamp, to guarantee the last device power consumption of mainboard
Homogeneity, to guarantee the stabilization of mainboard performance.
The present invention can solve cell voltage it is relatively low when since flash lamp consumption flows through lead to photographic quality problem, Yi Jikai greatly
Main board power supply deficiency leads to problems such as to restart when flash lamp, more accurate to flash lamp control, and mainboard is also effectively protected, and
It is increased without any cost, is implemented also fairly simple.
Detailed description of the invention
Fig. 1 is the flow chart for carrying out electric current of flash lamp control in the prior art；
Fig. 2 is that the present invention is based on the flow charts of cell voltage control flash lamp output electric current；
Fig. 3 is an exemplary diagram of heretofore described mapping table；
Fig. 4, Fig. 5, Fig. 6 are that the present invention is based on three implementations of the system of cell voltage control flash lamp output electric current respectively
The schematic diagram of example.
Specific embodiment
Lead to photographic quality greatly since flash lamp consumption flows through when in order to solve the problems, such as that cell voltage is relatively low, and opens flash of light
When lamp main board power supply deficiency leads to problems such as to restart, and the present invention provides a kind of based on cell voltage control flash lamp output electric current
System and method, can real-time detection cell voltage and the different brackets according to corresponding to cell voltage, limit output to flash of light
The maximum current of lamp realizes intelligent precise controlling.
The present invention program will be described in detail by some specific embodiments below, certainly, the present invention is not limited to
These embodiments below.
The present invention is configured and deposits to the mapping relations between cell voltage V and flash lamp maximum current threshold value A in advance
Storage.As shown in figure 3, for example by mapping sheet form below, the mapping relations of Lai Jilu multistage:
" V1≤V < V2, corresponding A 1；
V2≤V < V3, corresponding A 2；
……
Cell voltage V is more than or equal to the i-th voltage threshold Vi, and when being less than i+1 voltage threshold V (i+1), corresponding i-th electricity
Flow threshold value A i；
……”
Wherein, i=1,2,3 ..., match with the actual segment quantity of cell voltage V, flash lamp maximum current threshold value A；
Define the battery voltage threshold Vi < V (i+1) that battery voltage thresholds at different levels are less than its rear stage；Correspondingly, defining flashes of light at different levels
Lamp maximum current threshold value is again smaller than its rear stage flash lamp maximum current threshold value Ai < A (i+1)；That is, cell voltage is high in this example
When correspond to higher flash lamp maximum current threshold value, lower flash lamp maximum current threshold value, but this are corresponded to when cell voltage is low
Not as the limitation to current control mode of the present invention.
According to the difference of applicable cases, it can be the multiple grades for evenly or unevenly dividing cell voltage V, make adjacent
The interval of values of two-stage voltage threshold is identical or not identical；It is also possible to evenly or unevenly divide flash lamp maximum current threshold
The multiple grades of value A keep the interval of values of adjacent two-stage current threshold identical or not identical.Certainly, in different examples, may be used
To pass through setting, each section of flash lamp maximum current for keeping the identical each section of battery voltage threshold of interval of values different from interval of values
Threshold value is corresponding；Vice versa.
As shown in Fig. 2, an example of electric current of flash lamp control method of the present invention, process are as follows:
S0, setting mapping table, record the mapping relations of cell voltage V and flash lamp maximum current threshold value A；To cell voltage
Threshold value, the threshold value of maximum current divided corresponding multiple grades.
S1, the instruction for opening flash lamp is received.
S2, electric current of flash lamp value a is configured.
The current cell voltage Vc of S3, real-time detection, by inquire mapping table, by with corresponding to current cell voltage Vc
That level-one flash lamp maximum current threshold value Ac, the flash lamp maximum current A-max being set as under current battery level.
S4, the electric current of flash lamp value a of current setting and flash lamp maximum current A-max set by step S3 are compared
Compared with；
If S5, judging a greater than A-max, according to flash lamp maximum current A-max set by step S3, to currently setting
The electric current of flash lamp value a set is updated, and is powered as flash lamp；
If S6, judging a less than or equal to A-max, with the electric current of flash lamp value a of current setting, for flash lamp power supply.
It executes for the first time and the setting of electric current of flash lamp value and battery voltage detection, comparison etc. are operated, is opened according to what is received
The instruction for opening flash lamp is performed, at this point, in step S2, e.g. based on a random number in setting range, or
Current value when one preset default value or preceding primary unlatching flash lamp, to be set to electric current of flash lamp value
It sets.
And pass through step S5 or S6, after opening flash lamp, step S3 can be still returned to, cell voltage is persistently examined
It surveys, compare and electric current of flash lamp value resets etc. operation (i.e. circulation executes step S3-S6), so as to according to flash lamp
Enabling to battery power consumption the case where, to electric current of flash lamp value carry out dynamic adjustment.
Then, when executing step S4 for the first time, the numerical value that uses step S2 to set as the electric current of flash lamp value a of current setting into
Row compares；And for the first time other than other each time execution step S4 when, then using preceding primary judgement and execute institute after step S5 or S6
Electric current of flash lamp value a of the numerical value of setting as current setting, for being compared judgement.
As shown in figure 4, include: control is single in an example of the system of flash lamp output current control of the present invention
Member 1, the storage unit 6 of mapping table, query unit 5, comparing unit 4, input unit 2, the detection unit 3 of 9 voltage of battery, flash of light
The current regulation unit 7 of lamp 8.
Described control unit 1 is connect with other each unit signals of system, and respectively work to it control that exercises supervision.
The input unit 2 receives the various instructions of user, e.g. opens the instruction of flash lamp 8, and it is single to send control to
Member 1, to start subsequent entire control flow.In some examples, user can also be by input unit 2 to the mapping relations
It is set；The mapping table for setting mapping relations is stored into storage unit 6.
The storage unit 6 stores mapping table, and can be asked according to query unit 5 to the inquiry of mapping relations
It asks, obtains flash lamp maximum current threshold value A corresponding with certain 9 voltage V of level-one battery, feed back to query unit 5.
The detection unit 3 of 9 voltage of battery is measured in real time current 9 voltage of battery.Query unit 5 is according to working as
Before the cell voltage Vc that measures, read mapping table to inquire corresponding flash lamp maximum current threshold value Ac, be supplied to control
Unit 1；Flash lamp maximum current threshold value Ac is set as the maximum electricity of the flash lamp under current battery level by described control unit 1
A-max is flowed, provides the numerical value to comparing unit 4.
Described control unit 1 also provides the electric current of flash lamp value a an of current setting to comparing unit 4.It is described currently to set
The electric current of flash lamp value a set can be a random number in setting range or a default value or preceding primary enabling flash of light
The current value etc. updated after current value or the adjustment of preceding electric current of flash lamp when lamp；The electric current of flash lamp of the current setting
Value a can be and be recorded by control unit 1 or the storage of storage unit 6 and be read and supplied to comparing unit 4 when needed.
Alternatively, for wherein such as " current value when preceding primary enabling flash lamp " or " after preceding electric current of flash lamp adjustment
Current value of update " etc. can also be and be joined by element configuration, state of the control unit 1 to the current regulation unit 7 of flash lamp 8
After the acquisition testings such as number, it is calculated.
The comparing unit 4 is maximum electric by the flash lamp under the electric current of flash lamp value a of current setting and current battery level
A-max comparison result is flowed, control unit 1 is fed back to:
Based on the judging result of a > A-max, described control unit 1 is using flash lamp maximum current A-max as current setting
Electric current of flash lamp value a, provide the updated numerical value to the current regulation unit 7 of flash lamp 8, the current regulating power supplies with
This current value is the power supply of flash lamp 8；
Alternatively, the judging result based on a≤A-max, described control unit 1 mentions the electric current of flash lamp value a of current setting
The current regulation unit 7 of flash lamp 8 is supplied, the current regulating power supplies are powered by flash lamp 8 of this current value.
Can by setting, according to input unit 2 receive closing flash lamp 8 instruction, make previously described system from
It is jumped out in entire loop detection process, terminates the control that the real-time detection result based on cell voltage exports electric current to flash lamp 8,
Close flash lamp 8, current value is reduced to 0.
It, can be by acceptable minimum level-one cell voltage institute by the setting to mapping relations in other examples
Corresponding current threshold is set as 0, i.e., in limit low value of the cell voltage as low as setting, to ensure the other equipment such as mainboard
It works unaffected, flash lamp 8 would not allow for continue starting, but the present invention is without being limited thereto to the setting of current threshold.
The flash lamp 8 can be an integrated component being incorporated on the smart machines such as mobile phone or one only
Vertical external component.Cell voltage detected can refer to the battery that only flash lamp 8 is powered, and may also mean that as entire intelligence
The battery of energy equipment power supply, the latter are preferred situation.
The unlatching of the general flash lamp 8 is light filling of taking pictures for the camera to smart machine, i.e., opens in camera
During, opening and closing and current control are carried out to flash lamp 8.It is then set according to mode, unlatches and closes the instruction of flash lamp 8,
It can be adapted with the operation for pressing shutter.It, can also be by setting in advance even if not providing the instruction for closing flash lamp 8 individually
It is fixed so that flash lamp 8 is closed with the closing of camera, or make the control to 8 electric current of flash lamp with the closing of camera and
Terminate.
But in some instances, the flash lamp 8 is such as used as flashlight, then is not necessarily to while opening camera function.Such as
Shown in Fig. 5, timing unit 10 can be further set for system of the invention, be connect with 1 signal of control unit, to flash lamp 8
Enabling time after opening every time carries out timing；The embodiment description of other units setting of system referring to fig. 4.Described in this example
Comparing unit 4 is also used to for being compared with preset time threshold: when reaching this time actual enabling time of flash lamp 8
When to time threshold, terminate the control to 8 electric current of flash lamp, close the flash lamp 8, to avoid opening flash lamp 8 for a long time
Forget to close, meaningless consumption is caused to 9 electricity of battery.However, all may be used to the timing controlled of flash lamp 8 to all modes
It is applicable in, however it is not limited to the case where flash lamp 8 is used as flashlight.
In other examples, as shown in fig. 6, the illumination photometry unit that can be configured with the smart machines such as calling mobile phone itself
20, e.g. light sensor, obtain its to ambient brightness be acquired detection as a result, being sent to described control unit 1.System
The embodiment description of other units setting of system referring to fig. 4.Control unit 1 described in this example is accordingly to flash lamp maximum output electricity
Stream carries out auxiliary control, such as abundant in 9 electricity of battery, and in the bright enough situation of external environment, the maximum electricity of flash lamp can be limited
Stream threshold value selects output in lower several grades, and gives the user prompt information.Alternatively, described control unit 1 may be used also
Accordingly, to carry out linkage control to equipment such as flash lamp 8 and mobile phone screens, such as reduce in 9 electricity of battery, flash lamp need to be turned down
When 8 current class, the brightness of mobile phone screen can be reduced together, to save 9 electricity of battery.For this purpose, described relatively more single
Illumination photometry result can be compared by member 4 with preset illumination threshold, carried out accordingly control for control unit 1 and provided
Guidance.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (11)
1. a kind of method based on cell voltage control flash lamp output electric current, which is characterized in that include following procedure:
When based on a random number or a preset default value or preceding primary unlatching flash lamp in setting range
Current value or it is preceding it is primary close flash lamp when current value, to electric current of flash lamp value a carry out initial setting up；
The current cell voltage Vc of real-time detection, by being reflected between inquiry record cell voltage V and flash lamp maximum current threshold value A
The mapping table of relationship, acquisition and flash lamp maximum current threshold value Ac corresponding to current cell voltage Vc are penetrated, is set it to
With flash lamp maximum current A-max corresponding to current cell voltage Vc；
Current electric current of flash lamp value a is compared with flash lamp maximum current A-max:
If judging a > A-max, it is updated using numerical value of the flash lamp maximum current A-max to electric current of flash lamp value a, and with
Updated electric current of flash lamp value a is flash lamp power supply；
If judging a≤A-max, power by flash lamp of current electric current of flash lamp value a.
2. the method as described in claim 1 based on cell voltage control flash lamp output electric current, which is characterized in that
In the mapping table, cell voltage V points are multiple grades, and wherein the cell voltage V-arrangement of every two adjacent rank is at correspondence
A voltage segmentation；Flash lamp maximum current threshold value A is divided into multiple grades, is segmented phase with multiple voltages of cell voltage V
It is corresponding.
3. the method as described in claim 1 based on cell voltage control flash lamp output electric current, which is characterized in that
For flash lamp power supply, after opening flash lamp, circulation executes the current cell voltage Vc and subsequent operation of real-time detection
Process.
4. the method as described in claim 1 based on cell voltage control flash lamp output electric current, which is characterized in that
The current electric current of flash lamp value a being compared for the first time with flash lamp maximum current A-max, is the flash lamp of initial setting up
Current value a；
Other than for the first time it is any other it is primary in, the current electric current of flash lamp that is compared with flash lamp maximum current A-max
Value a, be by it is preceding it is primary judge after be used to the electric current of flash lamp value a that powers as flash lamp.
5. the method as described in claim 1 based on cell voltage control flash lamp output electric current, which is characterized in that
It to the initial setting up that electric current of flash lamp value a is carried out, is started based on the instruction of the unlatching flash lamp received.
6. it is a kind of based on cell voltage control flash lamp output electric current system, characterized by comprising:
Control unit, based in setting range a random number or a preset default value or preceding primary unlatching
Current value when flash lamp or preceding primary current value when closing flash lamp, carry out initial setting up to electric current of flash lamp value a；
Described control unit, also in system therewith signal connection controlled with lower unit；
Detection unit is measured in real time current cell voltage Vc；
Storage unit, the mapping table of storage, record have the mapping between cell voltage V and flash lamp maximum current threshold value A to close
System；
Query unit obtains and flash lamp maximum current threshold corresponding to current cell voltage Vc from the storage unit
Value Ac is sent to control unit, is set as described control unit and current cell voltage flash lamp maximum current threshold value Ac
Flash lamp maximum current A-max corresponding to Vc；
Comparing unit obtains the flash lamp of flash lamp maximum current A-max and current setting respectively from described control unit
Current value a is compared, and provides the judging result of a > A-max to drive described control unit to use flash lamp maximum current A-
Max is updated the numerical value of electric current of flash lamp value a, or provides the judging result of a≤A-max to drive described control unit
Current electric current of flash lamp value a is maintained；
The current regulation unit of flash lamp, according to the judging result that the comparing unit provides, with updated flash lamp electricity
The flow valuve a or electric current of flash lamp value a of maintenance is flash lamp power supply.
7. the system as claimed in claim 6 based on cell voltage control flash lamp output electric current, which is characterized in that
The system further includes the input unit connecting with described control unit signal, and the instruction for receiving user is sent to
Control unit, and the parameter of reception user setting send control unit or storage unit to；
The instruction of the user, the instruction comprising opening flash lamp；
Set parameter, the mapping relations in containment mapping table between cell voltage V and flash lamp maximum current threshold value A；Its
In, cell voltage V points are multiple grades, and the cell voltage V-arrangement of every two adjacent rank is segmented at a corresponding voltage；Flash of light
Lamp maximum current threshold value A is divided into multiple grades, corresponding with the segmentation of multiple voltages of cell voltage V.
8. the system as claimed in claim 7 based on cell voltage control flash lamp output electric current, which is characterized in that
The instruction for the unlatching flash lamp that described control unit is received based on it carries out initially electric current of flash lamp value a to start
Setting；
To numerical value needed for electric current of flash lamp value a initial setting up, is inputted by the input unit, be sent to control unit or deposit
Storage unit storage record, reads when comparing for the first time and is sent to comparing unit.
9. the system as claimed in claim 8 based on cell voltage control flash lamp output electric current, which is characterized in that
The current electric current of flash lamp value a that the comparing unit is used to be compared with flash lamp maximum current A-max for the first time is
The electric current of flash lamp value a of initial setting up；Other than for the first time it is any other it is primary in, be used to flash lamp maximum current A-max into
The current electric current of flash lamp value a that row compares, be by it is preceding it is primary judge after be used to the electric current of flash lamp value powered as flash lamp
a。
10. the system as claimed in claim 6 based on cell voltage control flash lamp output electric current, which is characterized in that
The system further includes the timing unit connecting with control unit signal, opening after arbitrarily once opening to flash lamp
Carry out timing with the time, make the comparing unit by this actual enabling time of flash lamp and preset time threshold into
Row compares, and when judging that this actual enabling time reaches time threshold, makes control of the system finishing to electric current of flash lamp, closes
Close the flash lamp.
11. the system as claimed in claim 6 based on cell voltage control flash lamp output electric current, which is characterized in that
The system further includes the illumination photometry unit connecting with control unit signal, it is acquired ambient brightness
The illumination photometry result of detection is sent to described control unit；The comparing unit read illumination photometry as a result, come with set in advance
Fixed illumination threshold is compared, and is carried out following control for control unit and is provided guidance；
Described control unit exports corresponding signal to limit the grade of alternative flash lamp maximum current threshold value in mapping table,
The grade of alternative flash lamp maximum current threshold value is set to match with current ambient brightness and cell voltage；Alternatively, institute
Control unit output corresponding signal is stated, can be joined to flash lamp and according to the other equipment that ambient brightness adjusts institute's electricity demand
Dynamic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508756.0A CN107105562B (en) | 2017-06-28 | 2017-06-28 | System and method based on cell voltage control flash lamp output electric current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508756.0A CN107105562B (en) | 2017-06-28 | 2017-06-28 | System and method based on cell voltage control flash lamp output electric current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107105562A CN107105562A (en) | 2017-08-29 |
| CN107105562B true CN107105562B (en) | 2019-11-05 |
Family
ID=59663938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508756.0A Active CN107105562B (en) | 2017-06-28 | 2017-06-28 | System and method based on cell voltage control flash lamp output electric current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107105562B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595571B (en) * | 2021-07-29 | 2022-06-28 | 廊坊市东润电子科技有限公司 | Circuit signal processing method, pipeline blockage detection signal receiver and pipeline blockage detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450532U (en) * | 2009-06-04 | 2010-05-05 | 宇龙计算机通信科技(深圳)有限公司 | Movable terminal |
| CN103491250A (en) * | 2013-09-22 | 2014-01-01 | 惠州Tcl移动通信有限公司 | Mobile terminal and flashlight module drive current setting method thereof |
| CN103501384A (en) * | 2013-09-17 | 2014-01-08 | 广东明创软件科技有限公司 | Method for adjusting electric current of flash lamp of mobile phone for taking picture and mobile phone |
| CN104243838A (en) * | 2014-09-10 | 2014-12-24 | 广东欧珀移动通信有限公司 | Photographing method and device based on flash lamp |
| CN106793040A (en) * | 2016-12-30 | 2017-05-31 | 深圳天珑无线科技有限公司 | Terminal control method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7835640B2 (en) * | 2008-05-09 | 2010-11-16 | Research In Motion Limited | Method and system for operating a camera flash on a mobile device |
-
2017
- 2017-06-28 CN CN201710508756.0A patent/CN107105562B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450532U (en) * | 2009-06-04 | 2010-05-05 | 宇龙计算机通信科技(深圳)有限公司 | Movable terminal |
| CN103501384A (en) * | 2013-09-17 | 2014-01-08 | 广东明创软件科技有限公司 | Method for adjusting electric current of flash lamp of mobile phone for taking picture and mobile phone |
| CN103491250A (en) * | 2013-09-22 | 2014-01-01 | 惠州Tcl移动通信有限公司 | Mobile terminal and flashlight module drive current setting method thereof |
| CN104243838A (en) * | 2014-09-10 | 2014-12-24 | 广东欧珀移动通信有限公司 | Photographing method and device based on flash lamp |
| CN106793040A (en) * | 2016-12-30 | 2017-05-31 | 深圳天珑无线科技有限公司 | Terminal control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107105562A (en) | 2017-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106297674B (en) | A kind of backlight brightness control method, device and display equipment | |
| CN200976102Y (en) | Power management system and system | |
| CN201063938Y (en) | Brightness control circuit and display device provided with the circuit | |
| CN104704920B (en) | Lamp device and the ligthing paraphernalia of this lamp device of use | |
| CN106375645B (en) | A kind of adaptive control system based on infrared eye | |
| CN105872321A (en) | Front-mounted camera brightness compensation method and device, and mobile terminal | |
| CN103595842B (en) | A kind of flash lamp is as brightness of illumination control method during pocket lamp and mobile terminal | |
| CN102724404B (en) | All weather exposure gaining automatic regulation method and system | |
| CN107660016A (en) | Lamp device and ligthing paraphernalia | |
| CN101453563A (en) | Video taking apparatus and display lightness regulation method | |
| CN105679256B (en) | Dynamic adjustment backlight approach and device | |
| CN106068048A (en) | A kind of light adaptive regulation method based on face brightness identification and system | |
| CN107105562B (en) | System and method based on cell voltage control flash lamp output electric current | |
| US9232594B2 (en) | Backlight circuit control method, backlight circuit and booster circuit | |
| CN103488026A (en) | Method and system for regulating luminance of camera fill flash | |
| CN103516984A (en) | Method and device for intelligently switching to HDR mode of camera | |
| CN110197640A (en) | Brightness adjusting method, device and the display screen of display screen | |
| CN104240676B (en) | Method for adjusting electronic device and electronic device | |
| US20240128781A1 (en) | Control method for power supply device, and power supply device | |
| CN101334524B (en) | Method for automatically controlling digital microscope light source | |
| CN101777322A (en) | Liquid crystal display television system | |
| CN104375358B (en) | digital studio photography lighting system | |
| CN107943158B (en) | Intelligent heating control card capable of adaptively adjusting power output and control method thereof | |
| CN106412543A (en) | Method and device for calibrating color cast of flashlight | |
| CN107846749A (en) | A kind of LED lamp system and its control method of stepless colour temperature and brightness regulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |