CN109540465A - A kind of lens cover of projector switch state detector and method - Google Patents
A kind of lens cover of projector switch state detector and method Download PDFInfo
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- CN109540465A CN109540465A CN201811167087.6A CN201811167087A CN109540465A CN 109540465 A CN109540465 A CN 109540465A CN 201811167087 A CN201811167087 A CN 201811167087A CN 109540465 A CN109540465 A CN 109540465A
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- lens
- hall sensor
- lens cap
- hall
- switch state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a kind of lens cover of projector switch state detectors, including projection casing, lens cap and ray machine camera lens, sliding rail, hall sensor；The hall sensor includes multiple sub- inductors, is separately positioned on projection casing and lens cap；The hall sensor is used to incude the location status relative to projection casing of lens cap.A kind of lens cover of projector switch state detection method is also disclosed, step includes: to read the Hall detection data of ray machine camera lens；The location status of lens cap is judged according to the Hall detection data of acquisition；Make corresponding measure according to above-mentioned location status.A kind of lens cover of projector switch state detector of the present invention and method realize effective judgement of the switch state of lens cap by the way that multiple hall sensors, and the combination with carriage are arranged on projection device shell.Meanwhile making corresponding measure for different states, that is, the brightness of ray machine camera lens is shut down or reduced, so that effectively prevention lens cap by heat thermal deformation that light source generates or is burnt, extends the service life of lens cap.
Description
Technical field
The present invention relates to field of electronic device more particularly to a kind of lens cover of projector switch state detector and sides
Method.
Background technique
With the development of reflective ultrashort burnt technology, the distance of projection significantly reduces, and realizes nothing by smart projector
Screen projection is possibly realized, at the same time, the appearance of laser light source and LED light source, so that brightness, color and the service life of projection have
It is greatly improved, has further pushed the development without screen shadow casting technique.Wherein laser light source and LED light source have brightness it is high,
The feature of service life length is widely used in without screen projection art.Presently, there are a security risk be that light source (ray machine) exists
A large amount of heat can be generated in the course of work, if projection device have lens cap, and after powering its lens cap because therefore
Barrier is always maintained at closed state, then the amount of heat that light source generates, which can crumple lens cap, even occurs the danger such as fire.
In the prior art, the opening and closing of the lens cap of projection device is usually directly controlled by motor, when projection device exists
Booting rear lens lid is because when failure can not be opened, and under normal circumstances, projecting apparatus system can not learn the switch state of lens cap,
System can not also be protected accordingly, easily cause safety problem due to the heat of light source generation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to provide a kind of shadow instrument lens cap switch state detector and method, because light source produces when solving lens cap closing
Raw amount of heat leads to the problem of being burned out.
The technical scheme adopted by the invention is that:
A kind of lens cover of projector switch state detector, including projection casing, lens cap and ray machine camera lens；Further include
Sliding rail, hall sensor；Ray machine camera lens is accommodated in projection casing；Lens cap is for protecting ray machine camera lens；Sliding rail connection projection
Casing and lens cap；Sliding rail realizes slide-open and the closing of lens cap for connection lens lid；Hall sensor includes more
A sub- inductor is separately positioned on projection casing and lens cap；Hall sensor is for incuding the lens cap relative to throwing
The location status of shadow casing；Multiple sub- inductors are judged to project the location status of casing using the variation of its relative position；Suddenly
You are also used to send Hall detection data to the detection unit of projector main circuit by inductor.
Preferably, lens cap includes outer cover and slip lid；The outer cover is covered on the slip lid extexine.
Preferably, hall sensor includes the first hall sensor, the second hall sensor, third hall sensor and the
Four hall sensors；First hall sensor, the second hall sensor are symmetrically distributed on projection casing；First hall sensor
The symmetrical central axes of the second hall sensor be overlapped with the central axes of ray machine camera lens；Third hall sensor, the 4th hall sensing
The inner surface of slip lid is arranged in device；Four hall sensors are located at same horizontal line；First hall sensor, the second hall sensing
The spacing of device is equal with third hall sensor, the 4th hall sensor spacing.
Preferably, the lens cap horizontally slips or slides up and down relative to projector casing.
Preferably, the detection device control mode is to manually control sliding.
Preferably, detection device further includes driving device, and the driving device includes direct current generator and gear unit.
A kind of lens cover of projector switch state detection method, step include: to read the Hall detection data of ray machine camera lens；
The location status of lens cap is judged according to the Hall detection data of acquisition；If lens cap fully opens, terminate testing process；If mirror
Skull completely closes, which controls projector shutdown；If lens cap opens half or closes half, projector is controlled
Reduce the brightness of ray machine camera lens.
The beneficial effects of the present invention are:
A kind of lens cover of projector switch state detector of the present invention, by be arranged on projection device shell it is multiple suddenly
That inductor, and the combination with carriage, realize effective judgement of the switch state of lens cap, meanwhile, for
Different states makes corresponding measure, that is, shuts down or reduce the brightness of ray machine camera lens, so that effectively prevention lens cap is by light
The heat thermal deformation or burn that source generates, extend the service life of lens cap.
A kind of lens cover of projector switch state detection method of the present invention judges camera lens by reading Hall circuit data
The location status of lid and different measures is taken according to different location status, realize the detection of lens cap switch state,
Improve user experience.In addition, the detection method is simple and easy, use cost is low.
It the composite can be widely applied to field of electronic device.
Detailed description of the invention
Fig. 1 a is a kind of external structure schematic diagram of one embodiment of lens cover of projector switch state detector；
Fig. 1 b is a kind of schematic diagram of internal structure of one embodiment of lens cover of projector switch state detector；
Fig. 1 c is a kind of another schematic diagram of internal structure of one embodiment of lens cover of projector switch state detector；
Fig. 2 a is the location status schematic diagram that lens cap and ray machine camera lens are kept completely separate；
Fig. 2 b is the completely open location status schematic diagram of lens cap；
Fig. 2 c is the location status schematic diagram that lens cap completely closes；
Fig. 2 d is that lens cap opens half or closes the location status schematic diagram of half；
Fig. 3 is a kind of flow chart of lens cover of projector switch state detection method.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
With reference to Fig. 1, an a kind of specific embodiment of lens cover of projector switch state detector of the present invention.Such as Fig. 1 a institute
Show, the external structure schematic diagram of one embodiment of detection device, detection device includes projection casing 1, ray machine camera lens 2 and lens cap 3.
Wherein lens cap 3 includes outer cover 31 and slip lid 32.Ray machine camera lens 2 is accommodated in projection casing 1.It is faced on projector's casing 1
There is an opening at the direction that 2 light beam of ray machine camera lens passes through, lens cap 3 is used to cover the opening to protect exposed ray machine camera lens.
Outer cover 31 is covered on 32 extexine of slip lid, and outer cover 31 and slip lid 32 form lens cap 3.
As shown in Figure 1 b, the schematic diagram of internal structure of one embodiment of detection device, detection device further include hall sensor 5
With rail structure 4.Sliding rail 4 is arranged at the upper and lower side frame of above-mentioned opening.Sliding rail 4 and above-mentioned slip lid 32 form sliding suite, use
It is open in realizing lens cap slide-open and closing above-mentioned ray machine camera lens.Hall sensor 5 is used to incude the opening and closing shape of lens cap
State.
As illustrated in figure 1 c, another schematic diagram of internal structure of one embodiment of detection device.Hall sensor 5 includes first suddenly
That inductor 51, the second hall sensor 52, third hall sensor 53 and the 4th hall sensor 54, the first hall sensor
51, the second hall sensor 52 is symmetrically distributed on projection casing 1, and symmetrical central axes are overlapped with the central axes of ray machine camera lens 1,
The inner surface of slip lid 32 is arranged in third hall sensor 53 and the 4th hall sensor 54.Four hall sensors are located at same
Horizontal line, and the first hall sensor 51, the spacing of the second hall sensor 52 and third hall sensor 53, the 4th Hall
54 spacing of inductor is equal.
With reference to Fig. 2, the status diagram of the positional relationship of lens cap 3 and ray machine camera lens 2.As shown in Figure 2 a, lens cap 3 is not
When being installed on projector, ray machine camera lens 2 and lens cap 3 are separated, the first hall sensor 51, the second hall sensor 52, the
Three hall sensors 53 and the 4th hall sensor 54 are underlapped；As shown in Figure 2 b, ray machine camera lens 2 works normally, lens cap 3
It fully opens, the second hall sensor 52 is Chong Die with third hall sensor 53；As shown in Figure 2 c, ray machine camera lens 2 is rested, camera lens
Lid 3 completely closes, and the first hall sensor 51 is Chong Die with third hall sensor 53, and the second hall sensor 52 and the 4th is suddenly
You are overlapped inductor 54；As shown in Figure 2 d, lens cap 3 opens half or closes half, and the first hall sensor 51, second is suddenly
That inductor 52, third hall sensor 53 and the 4th hall sensor 54 are underlapped.
The present invention is passed through suddenly again by the way that hall sensor, projector system are added in intelligent projection device lens cap hardware
Er Men judges that current ray machine opens or closes.Effective judgement of the switch state of lens cap is realized, meanwhile, for different
State makes corresponding measure (shutdown or the brightness for reducing ray machine camera lens), to effectively prevent what lens cap was generated by light source
Heat thermal deformation is burnt, and the service life of lens cap is extended.
In the present embodiment, detection device use manually controls lens cap 3 and horizontally slips, and then opens or cover camera lens and open
Mouthful.As the further improvement of scheme, detection device further includes driving device, which connect with sliding rail set group, is used for
Realize the automation control of lens cap opening and closing.The driving device includes direct current generator and gear unit etc..
As the further improvement of scheme, lens cap can take the mode slided up and down.
With reference to Fig. 3, a kind of flow chart of lens cover of projector switch state detection method.First is read after projector booting
On hall sensor 51 and the second hall sensor 52 detection data (once have hall sensor be overlapped i.e. acquisition NAND gate number
According to 1, not being overlapped and obtaining data is 0), to be judged according to the Hall detection data of acquisition, when the 4th hall sensor 53 and second suddenly
Lens cap fully opens when your inductor 52 is overlapped, when the first hall sensor 51 and the 4th hall sensor 53 are overlapped and the
Two hall sensors 52 and third hall sensor 54 are also overlapped, and lens cap 3 completely closes at this time.It is not disassembled in lens cap
In the case of, the location status of lens cap 3 can be judged according to detection data, if detection data group is combined into " 01 ", lens cap 3 is beaten completely
It opens, terminates testing process；If detection data group is combined into " 11 ", lens cap 3 is completely closed, which controls projector and close
Machine；If detection data group is combined into " 00 ", lens cap 3 opens half or closes half, which controls projector and reduce
The brightness of ray machine camera lens 2.
The state of shutdown detection Hall circuit can be realized according to practical smart projector project demands and makes related place
Reason.The present invention judges the location status of lens cap by reading Hall circuit data and is taken according to different location status
Different measures realizes the detection of lens cap switch state, improves user experience.In addition, the detection method is simple and easy,
Use cost is low.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (7)
1. a kind of lens cover of projector switch state detector, which is characterized in that including projection casing, lens cap and ray machine mirror
Head；It further include sliding rail, hall sensor；
The ray machine camera lens is accommodated in the projection casing；
The lens cap is for protecting the ray machine camera lens；
The sliding rail connection projection casing and lens cap；The sliding rail realizes the sliding of the lens cap for connection lens lid
It opens and closes；
The hall sensor includes multiple sub- inductors, is separately positioned on projection casing and lens cap；The hall sensing
Device is used to incude the location status relative to projection casing of the lens cap；The multiple sub- inductor utilizes its relative position
Variation judge project casing location status；
The hall sensor is also used to send Hall detection data to the detection unit of projector main circuit.
2. lens cover of projector switch state detector according to claim 1, which is characterized in that the lens cap packet
Include outer cover and slip lid；The outer cover is covered on the slip lid extexine.
3. lens cover of projector switch state detector according to claim 2, which is characterized in that the hall sensing
Device includes the first hall sensor, the second hall sensor, third hall sensor and the 4th hall sensor；
First hall sensor, the second hall sensor are symmetrically distributed on projection casing；
First hall sensor and the symmetrical central axes of the second hall sensor are overlapped with the central axes of ray machine camera lens；
The inner surface of slip lid is arranged in the third hall sensor, the 4th hall sensor；
Four hall sensors are located at same horizontal line；
First hall sensor, the second hall sensor spacing and third hall sensor, the 4th hall sensor between
Away from equal.
4. lens cover of projector switch state detector according to claim 1, which is characterized in that the lens cap phase
Projector casing is horizontally slipped or slided up and down.
5. lens cover of projector switch state detector according to claim 1, which is characterized in that the detection device
Control mode is to manually control sliding.
6. according to claim 1, which is characterized in that the detection device further includes driving device, the driving device
Including direct current generator and gear unit.
7. a kind of lens cover of projector switch state detection method, which is characterized in that its step includes:
Read the Hall detection data of ray machine camera lens；
The location status of lens cap is judged according to the Hall detection data of acquisition；
If lens cap fully opens, terminate testing process；If lens cap completely closes, which controls projector shutdown；
If lens cap opens half or closes half, control projector reduces the brightness of ray machine camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811167087.6A CN109540465A (en) | 2018-10-08 | 2018-10-08 | A kind of lens cover of projector switch state detector and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811167087.6A CN109540465A (en) | 2018-10-08 | 2018-10-08 | A kind of lens cover of projector switch state detector and method |
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| Publication Number | Publication Date |
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| CN109540465A true CN109540465A (en) | 2019-03-29 |
Family
ID=65843446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811167087.6A Pending CN109540465A (en) | 2018-10-08 | 2018-10-08 | A kind of lens cover of projector switch state detector and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010555A (en) * | 2019-12-25 | 2020-04-14 | 成都极米科技股份有限公司 | Projector and projector switch control method |
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| CN111010555A (en) * | 2019-12-25 | 2020-04-14 | 成都极米科技股份有限公司 | Projector and projector switch control method |
| CN111010555B (en) * | 2019-12-25 | 2021-05-28 | 成都极米科技股份有限公司 | Projector and projector switch control method |
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Application publication date: 20190329 |
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