CN108882432A - Light filling lamp control system and method - Google Patents
Light filling lamp control system and method Download PDFInfo
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- CN108882432A CN108882432A CN201710542732.7A CN201710542732A CN108882432A CN 108882432 A CN108882432 A CN 108882432A CN 201710542732 A CN201710542732 A CN 201710542732A CN 108882432 A CN108882432 A CN 108882432A
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- light filling
- driving
- light compensating
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- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
Abstract
The present invention provides a kind of light filling lamp control system and method, the light filling lamp control system includes：Two light filling driving lamps, for driving two kinds of light compensating lamp, each light filling driving lamp is for driving a type of light compensating lamp；Control device, for the output for controlling the complementary control of ground resistance progress described two light filling driving lamps by the setting pin to described two light filling driving lamps, so that the overall brightness of all light compensating lamps is basically unchanged；And switching device, for disabling the driving device of another type of light compensating lamp when one of light compensating lamp in the light compensating lamp of described two types reaches predetermined luminance, to carry out the switching of the light compensating lamp of described two types.The brightness that the captured image under the alternating light filling of two types light compensating lamp may be implemented in light filling lamp control system according to an embodiment of the present invention and method keeps uniformly being conducive to the algorithm analysis and handle that the later period is implemented based on captured image.
Description
Technical field
The present invention relates to security monitoring technology, relate more specifically to a kind of light filling lamp control system and method.
Background technique
Currently, often using light compensating lamp in protection and monitor field, such as use the near-infrared light filling of 850 nano wave lengths
Lamp, its purpose is to which image is switched to black and white in visible light luminance shortage, using imaging sensor near infrared band
Feature that can be photosensitive mends the brightness of near infrared light enhancing black white image.
When using light compensating lamp, the light compensating lamp of more than one wavelength is used sometimes, such as both using 850 nano wave lengths
Near infrared light light filling, and use the near infrared light light filling of 940 nano wave lengths.Artwork master can be enhanced in dual wavelength or multi-wavelength light filling
The brightness of picture, in addition, the different characteristics being imaged using dual wavelength or multi-wavelength, can achieve In vivo detection in back-end algorithm analysis
Purpose, that is, distinguish be true man or emulation (photo, mask etc.).
However, since In vivo detection needs to need to switch different wave length using the different characteristics of different wave length imaging
Light compensating lamp makes its replace light filling, and in handoff procedure, such as when being switched to from the light compensating lamp of A wavelength the light compensating lamp of B wavelength, such as
The light compensating lamp that fruit first closes A wavelength opens the light compensating lamp of B wavelength again, and the image that will lead between switching is dimmed suddenly；Conversely,
If the light compensating lamp for first opening B wavelength turns off the light compensating lamp of A wavelength, the image that will lead between switching brightens suddenly, this
Sample is unfavorable for later period algorithm and carries out In vivo detection or other algorithm analyses processing.
Summary of the invention
The present invention is proposed to solve the above-mentioned problems.According to an aspect of the present invention, a kind of light compensating lamp control system is provided
System, the light filling lamp control system include：Two light filling driving lamps, for driving two kinds of light compensating lamp, Mei Gesuo
Light filling driving lamp is stated for driving a type of light compensating lamp；Control device, for by being driven to described two light compensating lamps
The setting pin of dynamic device carries out complementary control to ground resistance to control the output of described two light filling driving lamps, so that
The overall brightness for obtaining all light compensating lamps is basically unchanged；And switching device, for when described two types light compensating lamp in its
When a kind of middle light compensating lamp reaches predetermined luminance, the driving device of another type of light compensating lamp is disabled, to carry out described two classes
The switching of the light compensating lamp of type.
In one embodiment of the invention, the light filling driving lamp is constant-current LED driving chip, the control dress
It is set to programmable resistance, the electric current that the output pin of the programmable resistance is connected to the constant-current LED driving chip is set
Set pin, the output electric current that the constant-current LED driving chip is determined to ground resistance of the electric current setting pin.
In one embodiment of the invention, the first output pin of the programmable resistance is connected to the first light compensating lamp
Pin is arranged in the electric current of driving device, and the second output pin of the programmable resistance is connected to the second light filling driving lamp
Electric current be arranged pin, the resistance between first output pin and second output pin is constant, it is described first output
Pin adds the defeated equal to first output pin and described second to ground resistance of second output pin to ground resistance
Resistance between pin out.
In one embodiment of the invention, the output pin of the first light filling driving lamp connects predetermined number
LED light, the LED light of the output pin connection predetermined number of the second light filling driving lamp.
In one embodiment of the invention, the switching device controls the light filling driving lamp by enable pin
Enabling and disabling, the enable pin of the first light filling driving lamp is connected to the first enabled letter of the switching device
Number, the enable pin of the second light filling driving lamp is connected to the second enable signal of the switching device.
In one embodiment of the invention, the clock pins of the programmable resistance and data incoming/outgoing foot
It is connected to iic bus, data are written to the programmable resistance by the iic bus, to control the programmable resistance
The corresponding resistance value over the ground of device output, the range of said write data depend on the exportable electricity of the constant-current LED driving chip
Flow range.
In one embodiment of the invention, the different types of light compensating lamp includes the light filling for issuing the light of different wave length
Lamp.
In one embodiment of the invention, the light filling driving lamp and control device separately include decoupling capacitance,
Decoupling capacitance one end ground connection is another to terminate to pull-up level.
According to a further aspect of the invention, a kind of light filling lamp control method is provided, the light filling lamp control method includes：It mentions
Two kinds of light compensating lamp is driven for two light filling driving lamps, each light filling driving lamp is for driving one kind
The light compensating lamp of type；The complementary to ground resistance progress of setting pin of described two light filling driving lamps is controlled to control
The output of two light filling driving lamps is stated, so that the overall brightness of all light compensating lamps is basically unchanged；And when described two
When one of light compensating lamp in the light compensating lamp of type reaches predetermined luminance, the driving dress of another type of light compensating lamp is disabled
It sets, to carry out the switching of the light compensating lamp of described two types.
In one embodiment of the invention, to described two light filling driving lamps setting pin to ground resistance into
Row complementation, which controls, includes：Being gradually reduced to ground resistance for the setting pin of the first light filling driving lamp is controlled, and controls second
The setting pin of light filling driving lamp is gradually increased ground resistance, is mended from the first kind light compensating lamp to Second Type with realizing
The overall brightness of all light compensating lamps is basically unchanged during the switching of light lamp；Or control setting for the second light filling driving lamp
Set being gradually reduced to ground resistance for pin, and control the first light filling driving lamp setting pin to ground resistance gradually
Increase, to realize from the Second Type light compensating lamp to the entirety of all light compensating lamps during the switching of the first kind light compensating lamp
Brightness is basically unchanged.
In one embodiment of the invention, the different types of light compensating lamp controlled in the light filling lamp control method
Under irradiation, image is acquired respectively for same target, extracts the feature in described image, for carrying out living body to the object
Detection.
The alternating in two types light compensating lamp may be implemented in light filling lamp control system according to an embodiment of the present invention and method
The brightness of captured image keeps uniformly being conducive to the algorithm analysis and handle that the later period is implemented based on captured image under light filling.
Detailed description of the invention
The embodiment of the present invention is described in more detail in conjunction with the accompanying drawings, the above and other purposes of the present invention,
Feature and advantage will be apparent.Attached drawing is used to provide to further understand the embodiment of the present invention, and constitutes explanation
A part of book, is used to explain the present invention together with the embodiment of the present invention, is not construed as limiting the invention.In the accompanying drawings,
Identical reference label typically represents same parts or step.
Fig. 1 shows the schematic block diagram of light filling lamp control system according to an embodiment of the present invention；
Fig. 2 shows the realizations of the illustrative circuitry of light filling lamp control system according to an embodiment of the present invention；And
Fig. 3 shows the schematic flow chart of light filling lamp control method according to an embodiment of the present invention.
Specific embodiment
In order to enable the object, technical solutions and advantages of the present invention become apparent, root is described in detail below with reference to accompanying drawings
According to example embodiments of the present invention.Obviously, described embodiment is only a part of the embodiments of the present invention, rather than this hair
Bright whole embodiments, it should be appreciated that the present invention is not limited by example embodiment described herein.Based on described in the present invention
The embodiment of the present invention, those skilled in the art's obtained all other embodiment in the case where not making the creative labor
It should all fall under the scope of the present invention.
Firstly, describing light filling lamp control system 100 according to an embodiment of the present invention referring to Fig.1.
As shown in Figure 1, light filling lamp control system 100 includes the first light filling driving lamp 110, the second light compensating lamp driving dress
The control device 130 setting 120 and being respectively connected with them.Wherein, the first light filling driving lamp 110 connects the first kind
Light compensating lamp 140, for driving the light compensating lamp 140 of the first kind.The light filling of second light filling driving lamp 120 connection Second Type
Lamp 150, for driving the light compensating lamp 150 of Second Type.Control device 130 is for controlling 110 He of the first light filling driving lamp
Second light filling driving lamp 120, so that the light compensating lamp 140 of the first kind through the driving of the first light filling driving lamp 110
It is worked alternatively with the light compensating lamp 150 of the first kind driven through the second light filling driving lamp 120, and in the light filling of the first kind
Lamp 140 and the light compensating lamp 150 of Second Type replace switching during keep the overall brightness of all light compensating lamps to be basically unchanged.
In one embodiment, it is different to can be sending for the light compensating lamp 140 of the first kind and the light compensating lamp 150 of Second Type
The light compensating lamp of the light of wavelength.For example, the light compensating lamp 140 of the first kind can be the light compensating lamp of the light of sending first wave length.Second
The light compensating lamp 150 of type can be the light compensating lamp of the light of sending second wave length.Illustratively, 140 He of light compensating lamp of the first kind
The light compensating lamp of Second Type can be the light compensating lamp of near infrared band.For example, the light compensating lamp 140 of the first kind can be sending
The light compensating lamp of the light compensating lamp of 850 nanometers of light, Second Type can be the light compensating lamp of 940 nanometers of light of sending.In other implementations
In example, the light compensating lamp 140 of the first kind and the light compensating lamp 150 of Second Type can be the other kinds of benefit with different characteristics
Light lamp.
In one embodiment, control device 130 is driven by the first light filling driving lamp 110 of control and the second light compensating lamp
Dynamic device 120 exports to control the light compensating lamp 150 of the light compensating lamp 140 of the first kind and Second Type during alternately switching
Changed power, so that the overall brightness of all light compensating lamps be kept to be basically unchanged.For example, being cut from the light compensating lamp 140 of the first kind
When changing to the light compensating lamp 150 of Second Type, the power that control device 130 can control the light compensating lamp 140 of the first kind gradually subtracts
It is small, while the light compensating lamp 150 for controlling Second Type is gradually increased.In this way, being switched to second from the light compensating lamp 140 of the first kind
When the light compensating lamp 150 of type, the overall brightness of all light compensating lamps can be kept to be basically unchanged.Similarly, from Second Type
When light compensating lamp 150 is switched to the light compensating lamp 140 of the first kind, control device 130 can control the light compensating lamp 150 of Second Type
Power is gradually reduced, while the light compensating lamp 140 for controlling the first kind is gradually increased, to keep the overall brightness base of all light compensating lamps
This is constant.
Herein, the meaning of " being basically unchanged " should be able to be expressly understood in those skilled in the art, as long as because making all benefits
The overall brightness of light lamp is generally consistent during light compensating lamp switches, it will be able to guarantee to shoot the bright of image in the present context
The uniformity of degree keeps the overall brightness of all light compensating lamps completely constant in above-mentioned handoff procedure without centainly accomplishing, when
So, if can control the degree of " completely constant ", effect will more preferably.
It now continues with reference to Fig. 1, as shown in Figure 1, light filling lamp control system 100 can also include switching device 160, switching
Device 160 is used for when one of light compensating lamp in the light compensating lamp of above two type reaches predetermined luminance, and disabling is another
The driving device of the light compensating lamp of type, to carry out the switching of the light compensating lamp of above two type.
In one embodiment, in one embodiment, switching device 160 can by central processing unit (CPU) or
Other control systems are realized.Illustratively, the first light filling driving lamp 110 and the second light filling driving lamp 120 can be with
It is connected to bus by enable pin, switching device 160 realizes the control of above-mentioned switching by bus.
Illustratively, when being switched to the light compensating lamp 150 of Second Type from the light compensating lamp 140 of the first kind, when the second class
When the light compensating lamp 150 of type reaches predetermined luminance, switching device 160 can transmit the first enable signal to the first light filling by bus
The enable pin of driving lamp 110, to complete switch off the light compensating lamp 140 of the first kind, to avoid the presence due to leakage current
And the light compensating lamp 140 of the first kind is had an impact to the algorithm analysis of rear end.Similarly, when the light compensating lamp from Second Type
150 when being switched to the light compensating lamp 140 of the first kind, when the light compensating lamp 140 of the first kind reaches predetermined luminance, switching device
160 can also transmit the second enable signal to the enable pin of the second light filling driving lamp 120, to complete switch off by bus
The light compensating lamp 150 of Second Type.
Herein, respective the included light filling of the light compensating lamp 150 of the light compensating lamp 140 and Second Type that are not intended to limit the first kind
The quantity of lamp can according to need the quantity they are arranged.
In addition, it is simple in order to describe, two light filling driving lamps, i.e. the first light compensating lamp driving dress is only shown in FIG. 1
110 and the second light filling driving lamp 120 are set, however, it should be understood that light filling lamp control system 100 may include more light fillings
Driving lamp.For example, light filling lamp control system 100 can also include third light filling driving lamp (not shown in FIG. 1),
Its light compensating lamp (not shown in FIG. 1) for connecting third type, for driving the light compensating lamp of third type.At this point, control device
130 can control the first light filling driving lamp 110, the second light filling driving lamp 120 and third light filling driving lamp,
So that the light compensating lamp 150 of the light compensating lamp 140 of the first kind, Second Type and the light compensating lamp three of third type respectively replace work
Make, handoff procedure is as described above.In addition, control device 130 also can control the first light filling driving lamp 110, the second light filling
Driving lamp 120 and third light filling driving lamp, so that the light compensating lamp of the light compensating lamp 140 of the first kind, Second Type
150 and third type light compensating lamp in both any combine worked alternatively between another one, handoff procedure is as above
It is described.
Be described in detail above light filling lamp control system 100 according to an embodiment of the present invention schematic structure composition and its
The course of work is realized below with reference to the illustrative circuitry that Fig. 2 describes light filling lamp control system 100 according to an embodiment of the present invention.
In one embodiment, above-mentioned light filling driving lamp can be constant-current LED (light emitting diode) driving chip.Example
Such as, the first light filling driving lamp 110 and the second light filling driving lamp 120 can be voltage adjustable constant-flow LED driving core
Piece A703EFT SOP-EP-8, in order to be distinguished, as shown in Figure 2, they are referred to as the first driving chip 210
With the second driving chip 220.First driving chip 210 and the second driving chip 220 can be managed by its EN pin and EN ' respectively
Foot connects enable signal EN1 and EN2, as shown in Figure 2, to control whether they work.In this embodiment, enable signal
EN1 and EN2 can be first enable signal and the second enable signal of switching device 160 (not shown in FIG. 2), switching device
160 control 210 He of the first driving chip by the enable pin of the first driving chip 210 of control and the second driving chip 220
The enabling and disabling of second driving chip 220.
With continued reference to Fig. 2, the output pin of the first driving chip 210 (is shown in Figure 2 for OUT1 pin and OUT2 pipe
Foot) connection the first kind light compensating lamp (such as the light compensating lamp for issuing the light of 850 nano wave lengths), be shown in Figure 2 for the first kind
The light compensating lamp of type includes 8 light compensating lamps, this is merely exemplary, and the output pin of the first driving chip 210 can connect predetermined
The light compensating lamp (such as LED light) of number.Second driving chip 220 output pin (be shown in Figure 2 for OUT1 ' pin and
OUT2 ' pin) connection Second Type light compensating lamp (such as the light compensating lamp for issuing the light of 940 nano wave lengths), be shown in Figure 2 for
The light compensating lamp of Second Type includes 8 light compensating lamps, this is merely exemplary, and the output pin of the first driving chip 220 can connect
Connect the light compensating lamp (such as LED light) of predetermined number.
In one embodiment, control device 130 can be programmable resistance, the output pin of the programmable resistance
It is connected to the electric current setting pin of the constant-current LED driving chip.For example, as shown in Figure 2, control device 130 is that number can
Programming resistor 230 is, for example, linear tap digital potentiometer/potentiometer TPL0102-EP-100.As shown in Fig. 2, number can be compiled
The HA pin (the first output pin 1 of digital programmable resistor 230 is again shown as in Fig. 2) of journey resistor 230 is connected to
Pin (ISET pin) is arranged in the electric current of first driving chip 210, and the LA pin of digital programmable resistor 230 is (in Fig. 2
It is shown as the second output pin 2 of digital programmable resistor 230) it is connected to the ISET ' pin of the second driving chip 220.Number
The WA pin (pin 3 of digital programmable resistor 230 is again shown as in Fig. 2) of word programmable resistance 230 is grounded.
Since the first driving chip 210 and the second driving chip 220 are constant current outputs, the size of respective output electric current
It is controlled by the size of the resistance of their own ISET pin (or ISET ' pin) over the ground.Therefore, the first driving chip 210
The size of output electric current depend on the ISET pin resistance R1 over the ground of the first driving chip 210, the second driving chip 220
The size for exporting electric current depends on the resistance R2 of the ISET ' pin of the second driving chip 220 over the ground.In one example, first
Driving chip 210 exports electric current Iout1 and is represented by Iout1=1.2 × 180/R1, the output electric current of the second driving chip 220
Iout2 is represented by Iout=1.2 × 180/R2.
Since the ISET pin of the first driving chip 210 is connected to the HA pin of digital programmable resistor 230 (in Fig. 2
In be again shown as the pin 1 of digital programmable resistor 230), the ISET ' pin of the second driving chip 220 is connected to number can
The LA pin (pin 2 of digital programmable resistor 230 is again shown as in Fig. 2) of programming resistor 230, and digital programmable
The WA pin (pin 3 of digital programmable resistor 230 is again shown as in Fig. 2) of resistor 230 is grounded, and therefore, number can
The pin 1 of programming resistor 230 is to the resistance R13 of pin 3 that is, resistance R1 above-mentioned, digital programmable resistor 230
Pin 2 to the resistance R23 of pin 3 that is, resistance R2 above-mentioned.
With continued reference to Fig. 2, digital programmable resistor 230 is for controlling the first driving chip 210 and the second driving core
Piece 220, so as to be driven core with by second by the changed power trend of the light compensating lamp of the first kind of the first driving chip 210 driving
The changed power trend of the light compensating lamp for the Second Type that piece 220 drives is on the contrary, namely make the output electricity of the first driving chip 210
The variation tendency of stream is opposite with the output variation tendency of electric current of the second driving chip 220.The output electricity of first driving chip 210
The size of stream depends on resistance R1 (i.e. R13), and the size of the output electric current of the second driving chip 220 depends on resistance R2 (i.e.
R23).For digital programmable resistor 230, pin 1 is definite value to the resistance R12 of pin 2, and R12=R13+
R23, therefore, when R13 becomes larger, R23 becomes smaller, and vice versa.Based on this, the light compensating lamp power an of type can be realized gradually
Another type of light compensating lamp power is gradually increased while reduction, keeps institute during their alternating switching so as to realize
There is the overall brightness of light compensating lamp to be basically unchanged.
In one embodiment, the range for answering input data of digital programmable resistor 230 depends on the first driving core
The exportable current range of piece 210 and the second driving chip 220.With continued reference to Fig. 2, the clock of digital programmable resistor 230
Pin SCL and data incoming/outgoing foot SDA may be coupled to iic bus (not shown in FIG. 2), by iic bus to can
Data are written in programming resistor 230, corresponding resistance value over the ground are exported to control programmable resistance 230, specifically control
HA pin is to the size of the resistance (i.e. R13) of WA pin, to control LA pin to the size of the resistance (i.e. R23) of WA pin.
In one embodiment, digital programmable resistor 230 is that 256 step-lengths are controllable, it can be written 0~255 numerical value.?
In one embodiment, R12 is 100 kilo-ohms of steady state value, and when to digital programmable resistance 230 write-in 0, R13 is 100 kilo-ohms, R23
It is zero.First driving chip 210 and the second driving chip 220 are constant-current LED driving chip, maximum output current 150
Milliampere, corresponding resistance value is 1.44 kilo-ohms, when its to ground resistance is 100 kilo-ohms when, output electric current is 2.16 milliamperes.It, can based on this
Digital programmable resistor 230 is arranged should input numerical value, can set minimum input numerical value to 4, corresponding resistance is 1.56 thousand
Europe similarly can set 252 for maximum input numerical value, and corresponding resistance value is 98.44 kilo-ohms, the resistance of the range corresponding the
The output current scope of one driving chip 210 and the second driving chip 220 is 2 milliamperes to 138 milliamperes.Illustrated above first drives
The input and output numberical range of dynamic chip 210, the second driving chip 220 and digital programmable resistor 230, it should be noted that its
It is merely exemplary.
In one embodiment, the first driving chip 210, the second driving chip 220 and digital programmable resistor 230
Decoupling capacitance, such as C1, C2 and C3 as shown in Figure 2 can be separately included, these decoupling capacitance one end ground connection, the other end is connected to
Level is pulled up, as shown in Figure 2.
Fig. 2 is combined to schematically illustrate the circuit realization of light filling lamp control system according to an embodiment of the present invention above,
In Fig. 2, for some pins (such as A2, A1, A0, HB, WB, LB, PGND1, PGND2, AGND, PAD, VCC, VDD, GND,
) etc. VSS do not described, because they are not related to main technical content of the invention, it will be appreciated by those skilled in the art that
These their effects and working method, details are not described herein again.
Based on above description, light filling lamp control system according to an embodiment of the present invention be may be implemented in multiple types light filling
The brightness of captured image keeps uniform under the alternating light filling of lamp, is conducive to the algorithm that the later period is implemented based on captured image and analyzes
It (such as In vivo detection, will be described later) with processing.
The light filling lamp control method provided according to a further aspect of the invention is described below with reference to Fig. 3.Fig. 3 is shown according to this
The schematic flow chart of the light filling lamp control method 300 of inventive embodiments.As shown in figure 3, light filling lamp control method 300 can wrap
Include following steps：
In step S310, two light filling driving lamps are provided to drive two kinds of light compensating lamp, each light filling
Driving lamp is for driving a type of light compensating lamp.
In step S320, to the setting pins of described two light filling driving lamps to ground resistance carry out complementary control with
The output of described two light filling driving lamps is controlled, so that the overall brightness of all light compensating lamps is basically unchanged.
In step S330, when one of light compensating lamp in the light compensating lamp of described two types reaches predetermined luminance, prohibit
With the driving device of another type of light compensating lamp, to carry out the switching of the light compensating lamp of described two types.
In an embodiment of the present invention, pair of the setting pin to described two light filling driving lamps in step S320
Ground resistance carries out complementary control：Control gradually subtracting to ground resistance for the setting pin of the first light filling driving lamp
It is small, and the setting pin for controlling the second light filling driving lamp is gradually increased ground resistance, with realization from first kind light filling
Lamp to Second Type light compensating lamp switching during the overall brightnesses of all light compensating lamps be basically unchanged；Or control second light filling
The setting pin of driving lamp is gradually reduced ground resistance, and controls the setting pin of the first light filling driving lamp
Ground resistance is gradually increased, with realize from the Second Type light compensating lamp to institute during the switching of the first kind light compensating lamp
There is the overall brightness of light compensating lamp to be basically unchanged.
Those skilled in the art can be in conjunction with the light compensating lamp control according to an embodiment of the present invention for being previously with regard to Fig. 1, Fig. 2 description
The operation and principle of system understanding light filling lamp control method 300 according to an embodiment of the present invention processed, for sake of simplicity, no longer superfluous herein
It states.
In an embodiment of the present invention, the irradiation of the different types of light compensating lamp controlled in the light filling lamp control method
Under, image is acquired respectively for same target, extracts the feature in described image, can be used for carrying out living body inspection to the object
It surveys.Here, since the light compensating lamp of different type (such as different wave length) has different characteristics, in the case where it is irradiated respectively for same
The extracted feature of image of an object acquisition is also different, can carry out In vivo detection to the object based on these features.
Based on above description, light filling lamp control method according to an embodiment of the present invention be may be implemented in two types light filling
The brightness of captured image keeps uniform under the alternating light filling of lamp, is conducive to the algorithm that the later period is implemented based on captured image and analyzes
And processing.
Although describing example embodiment by reference to attached drawing here, it should be understood that above example embodiment are only exemplary
, and be not intended to limit the scope of the invention to this.Those of ordinary skill in the art can carry out various changes wherein
And modification, it is made without departing from the scope of the present invention and spiritual.All such changes and modifications are intended to be included in appended claims
Within required the scope of the present invention.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, apparatus embodiments described above are merely indicative, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another equipment is closed or is desirably integrated into, or some features can be ignored or not executed.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the present invention and help to understand one or more of the various inventive aspects,
To in the description of exemplary embodiment of the present invention, each feature of the invention be grouped together into sometimes single embodiment, figure,
Or in descriptions thereof.However, the method for the invention should not be construed to reflect following intention：It is i.e. claimed
The present invention claims features more more than feature expressly recited in each claim.More precisely, such as corresponding power
As sharp claim reflects, inventive point is that the spy of all features less than some disclosed single embodiment can be used
Sign is to solve corresponding technical problem.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in this specific
Embodiment, wherein each, the claims themselves are regarded as separate embodiments of the invention.
It will be understood to those skilled in the art that any combination pair can be used other than mutually exclusive between feature
All features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed any method
Or all process or units of equipment are combined.Unless expressly stated otherwise, this specification (is wanted including adjoint right
Ask, make a summary and attached drawing) disclosed in each feature can be replaced with an alternative feature that provides the same, equivalent, or similar purpose.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize some moulds in article analytical equipment according to an embodiment of the present invention
The some or all functions of block.The present invention is also implemented as a part or complete for executing method as described herein
The program of device (for example, computer program and computer program product) in portion.It is such to realize that program of the invention can store
On a computer-readable medium, it or may be in the form of one or more signals.Such signal can be from internet
Downloading obtains on website, is perhaps provided on the carrier signal or is provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
The above description is merely a specific embodiment or to the explanation of specific embodiment, protection of the invention
Range is not limited thereto, and anyone skilled in the art in the technical scope disclosed by the present invention, can be easily
Expect change or replacement, should be covered by the protection scope of the present invention.Protection scope of the present invention should be with claim
Subject to protection scope.
Claims (11)
1. a kind of light filling lamp control system, which is characterized in that the light filling lamp control system includes：
Two light filling driving lamps, for driving two kinds of light compensating lamp, each light filling driving lamp is for driving
Move a type of light compensating lamp；
Control device, for carrying out complementary control to ground resistance by the setting pin to described two light filling driving lamps
The output of described two light filling driving lamps is controlled, so that the overall brightness of all light compensating lamps is basically unchanged；And
Switching device, for disabling when one of light compensating lamp in the light compensating lamp of described two types reaches predetermined luminance
The driving device of another type of light compensating lamp, to carry out the switching of the light compensating lamp of described two types.
2. light filling lamp control system according to claim 1, which is characterized in that the light filling driving lamp is constant current
LED drive chip, the control device are programmable resistance, and the output pin of the programmable resistance is connected to the perseverance
Pin is arranged in the electric current for flowing LED drive chip, and the electric current setting pin determines the constant-current LED driving chip to ground resistance
Output electric current.
3. light filling lamp control system according to claim 2, which is characterized in that the first output of the programmable resistance
Pin is connected to the electric current setting pin of the first light filling driving lamp, the second output pin connection of the programmable resistance
Pin is arranged in electric current to the second light filling driving lamp, the electricity between first output pin and second output pin
Hinder it is constant, first output pin plus second output pin to be equal to described first to ground resistance to ground resistance defeated
Resistance between pin and second output pin out.
4. light filling control system according to claim 3, which is characterized in that the output of the first light filling driving lamp
Pin connects the LED light of predetermined number, the LED light of the output pin connection predetermined number of the second light filling driving lamp.
5. light filling lamp control system according to claim 3, which is characterized in that the switching device passes through enable pin control
The enabling and disabling of the light filling driving lamp are made, the enable pin of the first light filling driving lamp is connected to described cut
The enable pin of first enable signal of changing device, the second light filling driving lamp is connected to the second of the switching device
Enable signal.
6. light filling lamp control system according to claim 2, which is characterized in that the clock pins of the programmable resistance
It is connected to iic bus with data incoming/outgoing foot, data are written to the programmable resistance by the iic bus, with
The corresponding resistance value over the ground of programmable resistance output is controlled, the range of said write data depends on the constant-current LED
The exportable current range of driving chip.
7. light filling lamp control system described in any one of -6 according to claim 1, which is characterized in that described different types of
Light compensating lamp includes the light compensating lamp for issuing the light of different wave length.
8. light filling control system according to claim 7, which is characterized in that the light filling driving lamp and control device
Decoupling capacitance is separately included, decoupling capacitance one end ground connection is another to terminate to pull-up level.
9. a kind of light filling lamp control method, which is characterized in that the light filling lamp control method includes：
Two light filling driving lamps are provided to drive two kinds of light compensating lamp, each light filling driving lamp is for driving
Move a type of light compensating lamp；
The complementary to ground resistance progress of setting pin of described two light filling driving lamps is controlled to control described two benefits
The output of light driving lamp, so that the overall brightness of all light compensating lamps is basically unchanged；And
When one of light compensating lamp in the light compensating lamp of described two types reaches predetermined luminance, another type of benefit is disabled
The driving device of light lamp, to carry out the switching of the light compensating lamp of described two types.
10. light filling lamp control method according to claim 9, which is characterized in that described two light filling driving lamps
Setting pin complementary control carried out to ground resistance include：
Being gradually reduced to ground resistance for the setting pin of the first light filling driving lamp is controlled, and controls the second light compensating lamp driving dress
The setting pin set is gradually increased ground resistance, to realize the switching phase from first kind light compensating lamp to Second Type light compensating lamp
Between the overall brightnesses of all light compensating lamps be basically unchanged；Or
Being gradually reduced to ground resistance for the setting pin of the second light filling driving lamp is controlled, and controls first light filling
The setting pin of driving lamp is gradually increased ground resistance, to realize from the Second Type light compensating lamp to the first kind
The overall brightness of all light compensating lamps is basically unchanged during the switching of type light compensating lamp.
11. light filling lamp control method according to claim 9 or 10, which is characterized in that in the light filling lamp control method
Under the irradiation of the different types of light compensating lamp controlled, image is acquired respectively for same target, extracts the spy in described image
Sign, for carrying out In vivo detection to the object.
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| CN201710542732.7A CN108882432B (en) | 2017-07-05 | 2017-07-05 | Light supplement lamp control system and method |
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| CN201710542732.7A CN108882432B (en) | 2017-07-05 | 2017-07-05 | Light supplement lamp control system and method |
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| CN108882432B CN108882432B (en) | 2020-03-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224619A1 (en) * | 2019-05-08 | 2020-11-12 | 杭州海康威视数字技术股份有限公司 | Camera |
| CN112730430A (en) * | 2020-12-23 | 2021-04-30 | 南京市晨枭软件技术有限公司 | Bridge flaw detection system based on image learning and detection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011092606A1 (en) * | 2010-02-01 | 2011-08-04 | Koninklijke Philips Electronics N.V. | Apparatus for enabling smooth start-up of solid-state lighting unit |
| CN103702038A (en) * | 2013-12-31 | 2014-04-02 | 浙江宇视科技有限公司 | Dynamic threshold value-based method and device for performing automatic day and night switching |
| CN104301623A (en) * | 2014-10-28 | 2015-01-21 | 浙江宇视科技有限公司 | Mixed light supplementing method and device |
| CN205158195U (en) * | 2015-09-18 | 2016-04-13 | 南京信息工程大学 | Program -controlled constant -current source circuit |
-
2017
- 2017-07-05 CN CN201710542732.7A patent/CN108882432B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011092606A1 (en) * | 2010-02-01 | 2011-08-04 | Koninklijke Philips Electronics N.V. | Apparatus for enabling smooth start-up of solid-state lighting unit |
| CN103702038A (en) * | 2013-12-31 | 2014-04-02 | 浙江宇视科技有限公司 | Dynamic threshold value-based method and device for performing automatic day and night switching |
| CN104301623A (en) * | 2014-10-28 | 2015-01-21 | 浙江宇视科技有限公司 | Mixed light supplementing method and device |
| CN205158195U (en) * | 2015-09-18 | 2016-04-13 | 南京信息工程大学 | Program -controlled constant -current source circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224619A1 (en) * | 2019-05-08 | 2020-11-12 | 杭州海康威视数字技术股份有限公司 | Camera |
| CN112730430A (en) * | 2020-12-23 | 2021-04-30 | 南京市晨枭软件技术有限公司 | Bridge flaw detection system based on image learning and detection method thereof |
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|---|---|
| CN108882432B (en) | 2020-03-13 |
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