CN108731815A - Heat source detection device, human eye protection system, laser projection and its control method - Google Patents
Heat source detection device, human eye protection system, laser projection and its control method Download PDFInfo
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- CN108731815A CN108731815A CN201710277975.2A CN201710277975A CN108731815A CN 108731815 A CN108731815 A CN 108731815A CN 201710277975 A CN201710277975 A CN 201710277975A CN 108731815 A CN108731815 A CN 108731815A
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- 238000001514 detection method Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 230000001846 repelling effect Effects 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 230000003068 static effect Effects 0.000 abstract description 14
- 230000002633 protecting effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 208000020564 Eye injury Diseases 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
- G01J5/0025—Living bodies
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
The embodiment of the invention discloses a kind of heat source detection device, human eye protection system, laser projection and its control methods.In the program, galvanometer enables to the infrared beam that heat source radiates to be moved on the surface of infrared sensor by vibration, as long as in this way, the heat source is in detection zone, infrared sensor can be continuously detected the heat source, and testing result is more accurate；It is applied in the human eye protection system of laser projection; the brightness of projection light source can more accurately be adjusted; when detecting heat source, illustrate that someone enters detection zone, no matter people is static or movement; very important person is in detection zone; persistently human eye can be protected, the brightness for adjusting light source is less than preset value, restores again until people leaves detection zone; it avoids damaging human eye, protecting effect is more preferable.
Description
Technical field
The present invention relates to Color Laser Projection Technology field more particularly to a kind of heat source detection device, human eye protection system, laser
Projector and its control method.
Background technology
Ultrashort coke laser projection (or TV) can be projected out 100 inches or more of picture in short distance, give pleasure in family
There is widest adaptability in the varying environments such as pleasure, commercial affairs, education, community service, completely new application model can be createed,
Brand-new viewing experience is brought for consumer.Currently, ultrashort coke laser television/projector has very compared to large scale flat panel TV
Big price advantage is suitble in household marketing.Moreover, the ultrashort laser light source that uses of coke laser projection is without needing to change,
And heavy metal pollution caused by completely eliminating bulb source possibility, it is eliminated for large-scale domestic applications and marketing
Trouble and worry.
Laser projection most common usage scenario in household is to substitute TV to be placed in cabinet for TV, such as Fig. 1 institutes
Show, in the camera lens projected image to adjacent wall or screen 102 of laser projection 101, if someone is close, when vertical view can see
The light projected to camera lens, since the light at camera lens is relatively strong (luminous flux can generally achieve 2000lm or more), if human eye is straight
Visor head, it is stronger to the stimulation of human eye, eyesight may be had some impact on.In order to avoid being damaged to human eye, generally
It needs that human eye defencive function is arranged, detects near laser projection machine host whether someone passes through drop if someone in a certain range
The method of low-light level reduces the luminous flux of camera lens output, to achieve the purpose that protect human eye.
In the prior art, in the scheme for realizing human eye defencive function, as shown in Fig. 2, typically using plastic lens 201
Protect system, the infrared beam that plastic lens are used for collecting in detection zone (empty in figure with the human eye that infrared sensor 202 is constituted
Shown in line), infrared sensor is used for being detected infrared beam.If detecting heat source, show someone close to host, then
Reduce brightness is protected, and when (being usually several seconds) can't detect heat source in a period of time, restores original brightness.But due to
The limitation of existing infrared sensor functionally, only heat source could be examined when being irradiated to the movement of the infrared beam on sensor surface
It measures, that is to say, that existing human eye protection system is only capable of the mobile people of detection, if someone can be moved to human eye protection domain
Interior, trigger protection, then people's remains stationary is motionless, at this moment can not just detect, will restore with regard to brightness after several seconds excessively, if at this time
Human eye sees camera lens, just has certain danger.
Invention content
The purpose of the embodiment of the present invention be to provide a kind of heat source detection device, human eye protection system, laser projection and its
Control method can not start human eye protection for solving the protection of the human eye in existing laser projection system when people is static
Problem.
The purpose of the embodiment of the present invention is achieved through the following technical solutions：
A kind of heat source detection device includes at least infrared sensor, convergent lens and galvanometer；Wherein：
The infrared sensor, for when detecting mobile infrared beam, determining that detection zone has heat source；
The convergent lens, for the infrared beam of detection zone to be converged to the galvanometer；
The galvanometer, the detection for the infrared beam of the heat source received to be incident to the infrared sensor
Face, and by vibration so that the infrared beam of the heat source is moved in the detection faces.
Preferably, the galvanometer is reflective galvanometer.
Preferably, the galvanometer is transmission-type galvanometer.
Preferably, the galvanometer includes an eyeglass, and a pair of magnet, a pair of of electromagnet coil；Wherein, the pair of electromagnetism
Iron coil is corresponded with the pair of magnet respectively；
The pair of electromagnet coil is for being passed through electric current so that one of electromagnet coil and corresponding magnet phase
It inhales, another electromagnet coil repels each other with corresponding magnet, and the attracting, alternating of repelling each other when current direction changes；
The pair of magnet be used for by with the pair of electromagnet coil it is attracting, repelling each other replaces, drive the eyeglass
Vibration.
A kind of human eye protection system, is applied in laser projection, includes at least described in control unit and any of the above item
Heat source detection device；Wherein：
Described control unit for being not less than preset value in the brightness of projection light source, and determines that infrared sensor detects
After detection zone has heat source, the brightness for adjusting projection light source is less than the preset value, and starts galvanometer；In the projection light source
Brightness is less than the preset value, and it is default to determine that the infrared sensor detects that the detection zone apyrogenic duration is more than
After time, the brightness for adjusting the projection light source is not less than the preset value, and closes the galvanometer.
A kind of control method of human eye protection system as described in any of the above item, is applied in laser projection, the party
Method includes：
It is not less than preset value in the brightness of projection light source, and after determining that infrared sensor detects that detection zone has heat source,
The brightness for adjusting projection light source is less than the preset value, and starts galvanometer, described so that the heat source is incident to by vibration
The infrared beam of the detection faces of infrared sensor is moved in the detection faces；
It is less than the preset value in the brightness of the projection light source, and determines that the infrared sensor detects detection zone
After the apyrogenic duration is more than preset time, the brightness for adjusting the projection light source is not less than the preset value, and closes
The galvanometer.
A kind of laser projection includes the human eye protection system as described in any of the above item.
A kind of control method of laser projection as described in any of the above item, this method include：
It is not less than preset value in the brightness of projection light source, and after determining that infrared sensor detects that detection zone has heat source,
The brightness for adjusting projection light source is less than the preset value, and starts galvanometer, described so that the heat source is incident to by vibration
The infrared beam of the detection faces of infrared sensor is moved in the detection faces；
It is less than the preset value in the brightness of the projection light source, and determines that the infrared sensor detects detection zone
After the apyrogenic duration is more than preset time, the brightness for adjusting the projection light source is not less than the preset value, and closes
The galvanometer.
The embodiment of the present invention has the beneficial effect that：
Since infrared sensor is only able to detect mobile heat source, when heat source enters detection zone, infrared sensor energy
The heat source is enough detected, if the heat source is static in detection zone, infrared sensor can not just detect the heat source；The present invention is implemented
In heat source detection device, human eye protection system, laser projection and its control method that example provides, galvanometer can be made by vibration
The infrared beam for obtaining the heat source radiation that convergent lens is assembled moves on the surface of infrared sensor, as long as in this way, the heat source exists
Detection zone, infrared sensor can be continuously detected the heat source, and testing result is more accurate；It is applied to laser projection
In human eye protection system, the brightness of projection light source can be more accurately adjusted, when detecting heat source, illustrates that someone enters detection
Region adjusts light source no matter people is static or movement, very important person can persistently protect human eye in detection zone
Brightness be less than preset value, restore again until people leaves detection zone, avoid damaging human eye, protecting effect is more preferable.
Description of the drawings
Fig. 1 is a kind of schematic diagram of laser projection projection in the prior art；
Fig. 2 is the structural schematic diagram that a kind of human eye in the prior art protects system；
Fig. 3 is a kind of one of structural schematic diagram of heat source detection device provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the galvanometer change in location of heat source detection device shown in Fig. 3 provided in an embodiment of the present invention；
Fig. 5 is a kind of second structural representation of heat source detection device provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of the galvanometer change in location of heat source detection device shown in fig. 5 provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of galvanometer provided in an embodiment of the present invention；
Fig. 8 is the changed schematic diagram in position of galvanometer shown in Fig. 8 provided in an embodiment of the present invention；
Fig. 9 is the control method flow chart that a kind of human eye provided in an embodiment of the present invention protects system；
Figure 10 is the control method flow chart that another human eye provided in an embodiment of the present invention protects system；
Figure 11 is a kind of control method flow chart of laser projection provided in an embodiment of the present invention.
Specific implementation mode
In order to solve the above technical problems, a kind of heat source detection device of offer of the embodiment of the present invention, human eye are protected system, are swashed
Light projector and its control method.
The embodiment of the present invention provides a kind of heat source detection device, includes at least infrared sensor, convergent lens and galvanometer；Its
In：
Infrared sensor, for when detecting mobile infrared beam, determining that detection zone has heat source；
Convergent lens, for the infrared beam of detection zone to be converged to galvanometer；
Galvanometer, the detection faces for the infrared beam of the heat source received to be incident to infrared sensor, and pass through vibration
So that the infrared beam of heat source is moved in the detection faces.
Infrared sensor in the embodiment of the present invention is the infrared sensor of passive type, due to the object more than absolute zero
There is infra-red radiation, thus infrared sensor can receive the infrared beam of the object radiation of detection zone, when detecting heat source,
It is to be detected by the variation of the infrared beam to detection zone, thus mobile heat source can only be detected.
Since infrared sensor is only able to detect mobile heat source, when heat source enters detection zone, infrared sensor energy
The heat source is enough detected, if the heat source is static in detection zone, infrared sensor can not just detect the heat source；The present invention is implemented
In the scheme of example, galvanometer enables to the infrared beam that heat source radiates to be moved on the surface of infrared sensor by vibration, in this way,
As long as the heat source can be continuously detected the heat source in detection zone, infrared sensor, testing result is more accurate；It is applied to
In the human eye protection system of laser projection, the brightness of projection light source, when detecting heat source, explanation can be more accurately adjusted
Someone enters detection zone, no matter people is static or movement, very important person can continue to open human eye guarantor in detection zone
Shield, the brightness for adjusting light source are less than preset value, restore again until people leaves detection zone, avoid damaging human eye, protects
Effect is more preferable.
When it is implemented, galvanometer can be reflective galvanometer, it can also be transmission-type galvanometer, which kind of galvanometer knot no matter selected
Structure, as long as the detection faces of infrared sensor are set on the emitting light path of galvanometer.Based on different mirror structures, below
A kind of heat source detection device provided by the invention is described in more detail in conjunction with the accompanying drawings and embodiments.
As shown in figure 3, the embodiment of the present invention provides a kind of heat source detection device, includes at least infrared sensor 301, assembles
Lens 302 and galvanometer 303；Wherein：
Infrared sensor 301, for when detecting mobile infrared beam, determining that detection zone has heat source；
Convergent lens 302, for the infrared beam of detection zone to be converged to galvanometer；
Galvanometer 303, the infrared beam for assembling convergent lens 302 are incident to the detection faces of infrared sensor；Also use
In when infrared sensor 301 detects heat source, heat source is made to be incident to the red of the detection faces of infrared sensor 301 by vibration
Outer light beam is moved in the detection faces.
In the present embodiment, galvanometer is reflective galvanometer, and the detection faces of infrared sensor are set to the reflecting surface side of galvanometer.
When galvanometer vibrates, galvanometer is vibrated to the second position shown in Fig. 4 from first position shown in Fig. 3.It can be seen from the figure that right
For galvanometer, after position changes, the incident angle of the infrared beam for the heat source radiation that convergent lens is assembled changes,
The angle respective change of reflected light, therefore, finally, the infrared beam of heat source radiation is incident to the position of the detection faces of infrared sensor
Setting can also change.In this way, the heat source either move or it is static, as long as the heat source in detection zone, the heat
The infrared beam in source is all mobile for infrared sensor, thus can be continuously detected the heat source, and testing result is more
It is accurate to add, and is more favorable for improving the accuracy of the unlatching of human eye defencive function.
As shown in figure 5, the embodiment of the present invention also provides a kind of heat source detection device, infrared sensor 501, meeting are included at least
Poly- lens 502 and galvanometer 503；Wherein：
Infrared sensor 501, for when detecting mobile infrared beam, determining that detection zone has heat source；
Convergent lens 502, for the infrared beam of detection zone to be converged to galvanometer；
Galvanometer 503, the infrared beam for assembling convergent lens are incident to the detection faces of infrared sensor；It is additionally operable to
When infrared sensor detects heat source, by vibration so that heat source is incident to the infrared beam of the detection faces of infrared sensor at this
Detection faces move.
In the present embodiment, galvanometer 503 is transmission-type galvanometer, and the detection faces of infrared sensor are set to the transmission plane one of galvanometer
Side.When galvanometer vibrates, galvanometer is vibrated to the second position shown in fig. 6 from first position shown in fig. 5.It can from figure
Go out, for galvanometer, after position changes, the incident angle of the infrared beam for the heat source radiation that convergent lens is assembled occurs
Variation, through the refraction angle respective change of galvanometer, therefore, finally, the infrared beam of heat source radiation is incident to infrared sensor
The positions of detection faces can also change.In this way, it is that the heat source either moves or static, as long as the heat source is detecting
In region, the infrared beam of the heat source is all mobile for infrared sensor, thus can be continuously detected the heat
Source, testing result is more accurate, is more favorable for improving the accuracy of the unlatching of human eye defencive function.
When it is implemented, there are many structures of convergent lens, either the individually lens with converging action, it can also
It is compound lens structure.Preferably, as shown in Figure 3 and Figure 5, convergent lens is toroidal lens.
When it is implemented, preferably, convergent lens can be, but not limited to as plastic lens.
When it is implemented, the distance of galvanometer to the detection faces of infrared sensor does not limit, can be joined according to practical structures
Number is designed, as long as the movement of the infrared beam of galvanometer outgoing can be detected.
Based on any of the above embodiment, there are many concrete structures of galvanometer, preferably, galvanometer includes an eyeglass, it is a pair of
Magnet, a pair of of electromagnet coil；Wherein, a pair of of electromagnet coil is corresponded with a pair of magnet respectively；
A pair of of electromagnet coil is for being passed through electric current so that one of electromagnet coil and corresponding magnet are attracting, separately
One electromagnet coil repels each other with corresponding magnet, and the attracting, alternating of repelling each other when current direction changes；
A pair of magnet be used for by with a pair of of electromagnet coil it is attracting, repelling each other replace, drive eyeglass vibrate.
If galvanometer is transmission-type galvanometer, above-mentioned eyeglass is lens；If galvanometer is reflective galvanometer, above-mentioned eyeglass is anti-
Penetrate mirror.The structure and working principle of galvanometer is illustrated by taking transmission-type galvanometer as an example below.
As shown in fig. 7, galvanometer includes lens 701, and a pair of magnet 702, a pair of of electromagnet coil 703；Wherein, a pair of of electromagnetism
Iron coil 703 is corresponded with a pair of magnet 702 respectively；
A pair of of electromagnet coil 703 is for being passed through electric current so that one of electromagnet coil 703 and corresponding magnet
702 is attracting, another electromagnet coil 703 repels each other with corresponding magnet 702, and when current direction changes it is attracting, repel each other friendship
It replaces；
A pair of magnet 702 be used for by with a pair of of electromagnet coil 703 it is attracting, repelling each other replaces, drive lens 701 are shaken
It is dynamic.
Wherein, a pair of magnet, electromagnet coil are fixed on lens, can be fixed by pasting.
In implementation, the polarity setting direction of a pair of magnet is identical, and the polarity setting direction of a pair of of electromagnet coil is opposite.It opens
After dynamic galvanometer, as shown in fig. 7, a pair of of electromagnet is the poles S close to one end of electromagnet coil, to electromagnet coil A and electromagnetism
Iron coil B is passed through forward current, it can be seen from the figure that wherein, polarity of the electromagnet coil A by one end of near magnet is the poles N,
With the polarity of opposite magnet on the contrary, the two is attracting (arrow shows the direction of active force in figure), electromagnet coil B is close to magnetic
One end of iron is the poles S, and identical as the polarity of opposite magnet, the two is repelled each other in (direction that arrow shows active force in figure), is made
It obtains lens and is in position shown in Fig. 7.Then, sense of current is changed to two electromagnet coils, is passed through reverse current, this
When, as shown in figure 8, polarity of the electromagnet coil A by one end of near magnet changes, the poles S are become from the poles N, with opposite magnetic
The polarity of iron is identical, attracting to become to repel each other, and polarity of the electromagnet coil B by one end of near magnet also changes, and is become from the poles S
The poles N repel each other and become attracting, in this way, will the positions of drive lens will change, in this way, it is attracting, repelling each other continues to replace,
Lens will vibrate.
A kind of electromagnetic structure galvanometer simple in structure is enumerated above, the galvanometer of other structures can also be used in implementation,
It will not enumerate herein.
Based on same inventive concept, the embodiment of the present invention also provides a kind of human eye protection system, is applied to laser projection
In machine, the heat source detection device described in control unit and any of the above embodiment is included at least；Wherein：
Control unit for being not less than preset value in the brightness of projection light source, and determines that infrared sensor detects detection
After there is heat source in region, the brightness for adjusting projection light source is less than preset value, and starts galvanometer；It is less than in the brightness of projection light source default
Value, and determine that infrared sensor detects that the detection zone apyrogenic duration more than after preset time, adjusts projection light source
Brightness be not less than preset value, and close galvanometer.
Since infrared sensor is only able to detect mobile heat source, when heat source enters detection zone, infrared sensor energy
The heat source is enough detected, if the heat source is static in detection zone, infrared sensor can not just detect that the heat source, the present invention are implemented
In the scheme of example, galvanometer enables to the infrared beam that heat source radiates to be moved on the surface of infrared sensor by vibration, in this way,
As long as the heat source can be continuously detected the heat source in detection zone, infrared sensor, testing result is more accurate, detects
When heat source, illustrate that someone enters detection zone, no matter people is static or movement, very important person can continue in detection zone
Human eye protection is opened, the brightness for adjusting light source is less than preset value, restores again until people leaves detection zone, avoids causing human eye
Injury, protecting effect are more preferable.
Wherein, preset value can be set according to actual needs, for example, could be provided as watching suitable for human eye in detection zone
Brightness value.This can rule of thumb count to obtain suitable for the brightness value watched.
Wherein, the size of preset time can also be configured according to actual needs, for example, the preset time be 3 seconds with
On.
Wherein, the brightness for adjusting projection light source is not less than preset value, specifically, the luminance recovery of projection light source can be adjusted
Brightness before not turning down can also be other brightness values.
Wherein, the control unit needs in human eye protection system are electrically connected with galvanometer and infrared sensor to transmit data letter
Number, it is no longer shown in this point diagram.
When it is implemented, control unit can be processor, the processor can be, but not limited to single-chip, multi-chip or
It is realized on multiple electronic components, and a variety of architectures can be used, including special or embeded processor, application specific processor, control
Device processed, ASIC etc..
Based on same inventive concept, the embodiment of the present invention also provides a kind of human eye guarantor as described in any of the above embodiment
The control method of protecting system is applied in laser projection, as shown in figure 9, this method includes at least following steps：
Step 910, projection light source brightness be not less than preset value when, determine that infrared sensor detects that detection zone has
After heat source, the brightness for adjusting projection light source is less than preset value, and starts galvanometer, to make to be incident to infrared sensor by vibration
Detection faces infrared beam the detection faces move；
Step 920, projection light source brightness be less than preset value when, determine that infrared sensor detects detection zone without heat
After the duration in source is more than preset time, the brightness for adjusting projection light source is not less than preset value, and closes galvanometer.
Since infrared sensor is only able to detect mobile heat source, when heat source enters detection zone, infrared sensor energy
The heat source is enough detected, if the heat source is static in detection zone, infrared sensor can not just detect that the heat source, the present invention are implemented
In the scheme of example, galvanometer enables to the infrared beam that heat source radiates to be moved on the surface of infrared sensor by vibration, in this way,
As long as the heat source can be continuously detected the heat source in detection zone, infrared sensor, testing result is more accurate, detects
When heat source, illustrate that someone enters detection zone, no matter people is static or movement, very important person can continue in detection zone
Human eye protection is opened, the brightness for adjusting light source is less than preset value, restores again until people leaves detection zone, avoids causing human eye
Injury, protecting effect are more preferable.
Below based on the structure of Fig. 3 and Fig. 5, the control program of system is protected to carry out human eye provided in an embodiment of the present invention
It is described more fully.
In the present embodiment, as shown in Figure 10, human eye protects the human eye protection process of system as follows：
Step 1010, electrifying startup infrared sensor execute step 1020.
Step 1020 judges whether infrared sensor detects that detection zone has heat source, if so, step 1030 is executed,
Otherwise continue to judge.
Step 1030 adjusts current light source driving current less than preset value, executes step 1040.
In the step, the brightness of light source drive current, that is, above-mentioned adjusting projection light source is adjusted.
Step 1040 starts galvanometer, executes step 1050.
Step 1050 judges whether infrared sensor detects that detection zone has heat source, if so, continue to judge, otherwise,
Execute step 1060.
Step 1060, when judging that infrared sensor detects whether the detection zone apyrogenic duration is more than default
Between, if so, step 1070 is executed, it is no to then follow the steps 1050.
In the step, preset time can be 3 seconds.
Step 1070 closes galvanometer, executes step 1080.
Step 1080 restores light source drive current, executes step 1020.
Based on same inventive concept, the embodiment of the present invention also provides a kind of laser projection, including as any of the above is real
Apply the human eye protection system of example.
Based on same inventive concept, the embodiment of the present invention also provides a kind of laser projection such as any of the above embodiment
Control method, as shown in figure 11, this method include at least following steps：
Step 1110, projection light source brightness be not less than preset value, and determine infrared sensor detect detection zone
After having heat source, the brightness for adjusting projection light source is less than preset value, and starts galvanometer, infrared so that heat source is incident to by vibration
The infrared beam of the detection faces of sensor is moved in the detection faces；
Step 1120, projection light source brightness be less than preset value, and determine infrared sensor detect detection zone without
After the duration of heat source is more than preset time, the brightness for adjusting projection light source is not less than preset value, and closes galvanometer.
Since infrared sensor is only able to detect mobile heat source, when heat source enters detection zone, infrared sensor energy
The heat source is enough detected, if the heat source is static in detection zone, infrared sensor can not just detect that the heat source, the present invention are implemented
In the scheme of example, galvanometer enables to the infrared beam that heat source radiates to be moved on the surface of infrared sensor by vibration, in this way,
As long as the heat source can be continuously detected the heat source in detection zone, infrared sensor, testing result is more accurate, detects
When heat source, illustrate that someone enters detection zone, no matter people is static or movement, very important person can continue in detection zone
Human eye protection is opened, the brightness for adjusting light source is less than preset value, restores again until people leaves detection zone, avoids causing human eye
Injury, protecting effect are more preferable.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of heat source detection device, which is characterized in that include at least infrared sensor, convergent lens and galvanometer；Wherein：
The infrared sensor, for when detecting mobile infrared beam, determining that detection zone has heat source；
The convergent lens, for the infrared beam of detection zone to be converged to the galvanometer；
The galvanometer, the detection faces for the infrared beam of the heat source received to be incident to the infrared sensor, and
By vibration so that the infrared beam of the heat source is moved in the detection faces.
2. device as described in claim 1, which is characterized in that the galvanometer is reflective galvanometer.
3. device as described in claim 1, which is characterized in that the galvanometer is transmission-type galvanometer.
4. such as claims 1 to 3 any one of them device, which is characterized in that the galvanometer includes an eyeglass, a pair of of magnetic
Iron, a pair of of electromagnet coil；Wherein, the pair of electromagnet coil is corresponded with the pair of magnet respectively；
The pair of electromagnet coil is for being passed through electric current so that one of electromagnet coil and corresponding magnet are attracting, separately
One electromagnet coil repels each other with corresponding magnet, and the attracting, alternating of repelling each other when current direction changes；
The pair of magnet be used for by with the pair of electromagnet coil it is attracting, repelling each other replace, drive eyeglass vibration.
5. a kind of human eye protects system, it is applied in laser projection, which is characterized in that include at least control unit and such as right
It is required that 1~4 any one of them heat source detection device；Wherein：
Described control unit for being not less than preset value in the brightness of projection light source, and determines that infrared sensor detects detection
After there is heat source in region, the brightness for adjusting projection light source is less than the preset value, and starts galvanometer；In the brightness of the projection light source
Less than the preset value, and determine that the infrared sensor detects that the detection zone apyrogenic duration is more than preset time
Afterwards, the brightness for adjusting the projection light source is not less than the preset value, and closes the galvanometer.
6. a kind of control method of human eye protection system as claimed in claim 5, is applied in laser projection, feature exists
In this method includes：
It is not less than preset value in the brightness of projection light source, and after determining that infrared sensor detects that detection zone has heat source, adjusts
The brightness of projection light source is less than the preset value, and starts galvanometer, described infrared so that the heat source is incident to by vibration
The infrared beam of the detection faces of sensor is moved in the detection faces；
It is less than the preset value in the brightness of the projection light source, and determines that the infrared sensor detects detection zone without heat
After the duration in source is more than preset time, the brightness for adjusting the projection light source is not less than the preset value, and described in closing
Galvanometer.
7. a kind of laser projection, which is characterized in that protect system including human eye as claimed in claim 5.
8. a kind of control method of laser projection as claimed in claim 7, which is characterized in that this method includes：
It is not less than preset value in the brightness of projection light source, and after determining that infrared sensor detects that detection zone has heat source, adjusts
The brightness of projection light source is less than the preset value, and starts galvanometer, described infrared so that the heat source is incident to by vibration
The infrared beam of the detection faces of sensor is moved in the detection faces；
It is less than the preset value in the brightness of the projection light source, and determines that the infrared sensor detects detection zone without heat
After the duration in source is more than preset time, the brightness for adjusting the projection light source is not less than the preset value, and described in closing
Galvanometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277975.2A CN108731815A (en) | 2017-04-25 | 2017-04-25 | Heat source detection device, human eye protection system, laser projection and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277975.2A CN108731815A (en) | 2017-04-25 | 2017-04-25 | Heat source detection device, human eye protection system, laser projection and its control method |
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| CN108731815A true CN108731815A (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710277975.2A Pending CN108731815A (en) | 2017-04-25 | 2017-04-25 | Heat source detection device, human eye protection system, laser projection and its control method |
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| CN111352289A (en) * | 2020-04-22 | 2020-06-30 | 聚好看科技股份有限公司 | Projector and brightness adjusting method |
| CN112687216A (en) * | 2020-12-28 | 2021-04-20 | 青岛海信激光显示股份有限公司 | Laser projection apparatus and control method thereof |
| CN115086627A (en) * | 2022-06-06 | 2022-09-20 | 岚图汽车科技有限公司 | Projector control method and device and vehicle |
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