CN104360567A - Projection brightness adjustment method of adaptive projection system - Google Patents

Projection brightness adjustment method of adaptive projection system Download PDF

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Publication number
CN104360567A
CN104360567A CN201410533377.3A CN201410533377A CN104360567A CN 104360567 A CN104360567 A CN 104360567A CN 201410533377 A CN201410533377 A CN 201410533377A CN 104360567 A CN104360567 A CN 104360567A
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CN
China
Prior art keywords
module
brightness
projection brightness
projector
projection
Prior art date
Application number
CN201410533377.3A
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Chinese (zh)
Inventor
胡国良
Original Assignee
苏州合欣美电子科技有限公司
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Publication date
Application filed by 苏州合欣美电子科技有限公司 filed Critical 苏州合欣美电子科技有限公司
Priority to CN201410533377.3A priority Critical patent/CN104360567A/en
Publication of CN104360567A publication Critical patent/CN104360567A/en

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/142Adjusting of projection optics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/74Projection arrangements for image reproduction, e.g. using eidophor

Abstract

The invention discloses a projection brightness adjustment method of an adaptive projection system. The system comprises a projector and a curtain. The curtain comprises a curtain body, a wireless transmitting module, a data handling module and a plurality of light sensation sensors evenly distributed on the curtain body; the projector comprises a control module, an angle adjustment module, a brightness adjustment module, a motor and a wireless receiving module. Before the projector starts working, the light sensation sensors at the center of the curtain body collect light brightness which is transmitted to the control module through the wireless transmitting module and the wireless receiving module after being processed by the data handling module, the control module obtains estimation projection brightness after adding a preset brightness difference on the received light brightness, and the estimation projection brightness is transmitted to the brightness adjustment module; the brightness adjustment module adjusts the brightness to the projection brightness of the projector according to the estimation projection brightness. The method is simple in structure, low in cost and capable of adjusting the projection brightness automatically.

Description

A kind of projection brightness control method of self-adaptation optical projection system

Technical field

The present invention relates to projection field, particularly relate to a kind of projection brightness control method of self-adaptation optical projection system.

Background technology

Projector, under taking in the policy of national promote domestic demands and the people background constantly promoted, the enforcement of Rural Culture ethnic minority regions has promoted the quick growth of China's Projector Market further.According to statistics, within 2010, China's Projector Market shipment amount scale reaches 1,280,000, compares 2009 and increases by 43.6%.Think, within 2011, China's Projector Market will keep quick growth, and annual shipment amount will reach 1,670,000, year rate of growth to be about projector be 30%.The five-year, the compound growth rate of China's Projector Market will reach 17.1%.

China projector's product consumption market mainly concentrates on the large-and-medium size cities such as the more flourishing North China of economy, East China, south China.Education, commercial affairs, government, home entertaining are the four large main consumer groups supporting Chinese projector industry.Make a general survey of China's Projector Market.No matter from the quantity of product, quality or kind aspect, all reach certain maturity, the popularization and application of product makes projector change to mass product from comparatively professional display device in the psychological positioning of user, the marketing scale of industry constantly expands, 2010, China's Projector Market sales volume is 1,100,000, compares 2009 and increases by 37.5%.From this 10 years China's Projector Market developments, China's Projector Market scale increases by 18 times, and its average growth rate per annum is 39.14%, and industry is in high-speed development period.

From the development form in industry future, education is still industry future development pillar field.According to statistical figure, institute of total kindergarten 12.91 ten thousand, the whole nation in 2010, institute of primary school 39.42 ten thousand, general high school 7.90 ten thousand institute, institute of common medium universities and colleges 3047, institute of higher education school 1778, be equipped with a projector by each classroom to calculate, according to related data display China only education sector market capacity just reach more than 1,100 ten thousand, if calculated according to projection occupation rate, projector can account for about 14%-28% (not comprising market maintenance), and the real sales volume of education market in 2010 is less than 500,000.

Secondly, the development in commercial projection market is also the key strength of left and right projector market development.Although China's commercial affairs projection market, in rapid expansion, is estimated according to relevant survey institute, in future, medium-sized and small enterprises quantity will keep the rate of growth of 7%-8%, and within 2012, medium-sized and small enterprises sum will reach 5,000 ten thousand, industry development Bright Prospect.In addition, with regard to domestic at present, wealthy family's quantity of assets more than 1,000,000 can reach more than 200 ten thousand, and some elite, white collar are comparatively large for the demand of the quality of life, amusement equipment, and following household application market has a high potential.

Existing optical projection system generally all needs people manually to adjust projection brightness, very inconvenient.

Patent " self-adaptation projector " (application number: 201310086955.9) disclose a kind of self-adaptation projector, comprise image capture module, image processing module and execution module, wherein image capture module is taken pictures to the projected picture of projector and screen or is taken, and by image processing module to the picture of taking pictures or taking carry out image procossing, analysis, the parameter drawn transfers to execution module to make corresponding control to projector to order.The positional information of frame out and screen is obtained, by electric machine rotation projector by image procossing; Draw monochrome information, the brightness of projection is adjusted automatically; Draw sharpness, resolution information, automatically focus; Show that screen is concavo-convex, inclined degree information, automatically concavo-convex, process of tilting is done to the image being about to projection.The present invention is applicable to fixed and portable projector.

This projector cost is higher, and treatment scheme more complicated, need to compare complicated process to the picture of shooting.

Summary of the invention

Technical matters to be solved by this invention is the defect for relating in background technology, and provide a kind of projection brightness control method of self-adaptation optical projection system, structure is simple, cheap, automatically can regulate projection brightness.

The present invention is for solving the problems of the technologies described above by the following technical solutions:

A projection brightness control method for self-adaptation optical projection system, described self-adaptation optical projection system comprises projector and curtain;

Described curtain comprises curtain body, wireless transmitter module, data preparation module and some photosensitive sensors;

Described projector comprises control module, luminance adjustment module and wireless receiving module;

Described photosensitive sensors is symmetrical and be evenly distributed on curtain body about curtain body central;

Described brightness adjusting method comprises following steps:

Step 1), before projector is started working, adopts the photosensitive sensors being positioned at curtain body central to gather light luminance, and light luminance is passed to data preparation module;

Step 2), data preparation module is transmitted to wireless receiving module by after data preparation by wireless transmitter module;

Step 3), the information received is passed to control module by wireless receiving module, and control module obtains after the light luminance received is added default luminance difference estimating projection brightness, and estimation projection brightness is passed to luminance adjustment module;

Step 4), after luminance adjustment module receives estimation projection brightness, the maximal projection brightness of estimation projection brightness and projector is made comparisons, if estimation projection brightness is more than or equal to the maximal projection brightness of projector, the projection brightness of projector is adjusted to maximal projection brightness by luminance adjustment module; If estimation projection brightness is less than the maximal projection brightness of projector, the projection brightness of projector is adjusted to estimation projection brightness by luminance adjustment module.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described photosensitive sensors is that cruciform is evenly distributed on described curtain body.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described photosensitive sensors is that M shape is evenly distributed on described curtain body.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described wireless transmitter module and wireless receiving module are based on Zigbee network wireless connections.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, the processor of described control module adopts 51 series monolithics.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, the processor of described control module adopts AT89S52 single-chip microcomputer.

The present invention adopts above technical scheme compared with prior art, has following technique effect:

1. structure is simple, cheap, easy to use;

2. can automatic regulating lightness, make the comfortableness of human eye reach maximum.

Accompanying drawing explanation

Fig. 1 is the structural representation of curtain in the present invention;

Fig. 2 is the module diagram of projector in the present invention.

In figure, 1-curtain body, 2-photosensitive sensors, 3-data preparation module, 4-wireless transmitter module.

Embodiment

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

The invention discloses a kind of projection brightness control method of self-adaptation optical projection system, described self-adaptation optical projection system comprises projector and curtain;

As shown in Figure 2, described curtain comprises curtain body, wireless transmitter module, data preparation module and some photosensitive sensors;

As shown in Figure 1, described projector comprises control module, angular adjustment module, luminance adjustment module, motor and wireless receiving module;

Described photosensitive sensors is symmetrical and be evenly distributed on curtain body about curtain body central;

Described brightness adjusting method comprises following steps:

Step 1), before projector is started working, adopts the photosensitive sensors being positioned at curtain body central to gather light luminance, and light luminance is passed to data preparation module;

Step 2), data preparation module is transmitted to wireless receiving module by after data preparation by wireless transmitter module;

Step 3), the information received is passed to control module by wireless receiving module, and control module obtains after the light luminance received is added default luminance difference estimating projection brightness, and estimation projection brightness is passed to luminance adjustment module;

Step 4), after luminance adjustment module receives estimation projection brightness, the maximal projection brightness of estimation projection brightness and projector is made comparisons, if estimation projection brightness is more than or equal to the maximal projection brightness of projector, the projection brightness of projector is adjusted to maximal projection brightness by luminance adjustment module; If estimation projection brightness is less than the maximal projection brightness of projector, the projection brightness of projector is adjusted to estimation projection brightness by luminance adjustment module.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described photosensitive sensors is that cruciform is evenly distributed on described curtain body.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described photosensitive sensors is that M shape is evenly distributed on described curtain body.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, described wireless transmitter module and wireless receiving module are based on Zigbee network wireless connections.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, the processor of described control module adopts 51 series monolithics.

As the further prioritization scheme of projection brightness control method of a kind of self-adaptation of the present invention optical projection system, the processor of described control module adopts AT89S52 single-chip microcomputer.

Also disclose a kind of projection angle control method in the present invention, comprise following steps:

Step 1), described projector is after described curtain body, symmetrical and the photosensitive sensors be evenly distributed on curtain body gathers light luminance respectively about curtain body central, and light luminance is passed to data preparation module;

Step 2), described data preparation module sends to wireless receiving module by wireless sending module after the light luminance of each photosensitive sensors received and positional information thereof being arranged;

Step 3), the light luminance of each photosensitive sensors received and positional information thereof are passed to control module by wireless receiving module;

Step 4), control module respectively by the light luminance of each photosensitive sensors and the projection brightness of projector poor, pick out difference preset error range in photosensitive sensors;

Step 5), control module judges that whether the photosensitive sensors of difference in the error range preset be symmetrical about curtain body central;

Step 6), if it is symmetrical that the photosensitive sensors of difference in the error range preset is not in relation to curtain body central, then control the projection angle of motor to projector by Angle ambiguity module to adjust, until the photosensitive sensors of difference in the error range preset is symmetrical about curtain body central.

Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a projection brightness control method for self-adaptation optical projection system, described self-adaptation optical projection system comprises projector and curtain;
Described curtain comprises curtain body, wireless transmitter module, data preparation module and some photosensitive sensors;
Described projector comprises control module, luminance adjustment module and wireless receiving module;
Described photosensitive sensors is symmetrical and be evenly distributed on curtain body about curtain body central;
It is characterized in that, comprise following steps:
Step 1), before projector is started working, adopts the photosensitive sensors being positioned at curtain body central to gather light luminance, and light luminance is passed to data preparation module;
Step 2), data preparation module is transmitted to wireless receiving module by after data preparation by wireless transmitter module;
Step 3), the information received is passed to control module by wireless receiving module, and control module obtains after the light luminance received is added default luminance difference estimating projection brightness, and estimation projection brightness is passed to luminance adjustment module;
Step 4), after luminance adjustment module receives estimation projection brightness, the maximal projection brightness of estimation projection brightness and projector is made comparisons, if estimation projection brightness is more than or equal to the maximal projection brightness of projector, the projection brightness of projector is adjusted to maximal projection brightness by luminance adjustment module; If estimation projection brightness is less than the maximal projection brightness of projector, the projection brightness of projector is adjusted to estimation projection brightness by luminance adjustment module.
2. the projection brightness control method of self-adaptation optical projection system according to claim 1, is characterized in that, described photosensitive sensors is that cruciform is evenly distributed on described curtain body.
3. the projection brightness control method of self-adaptation optical projection system according to claim 1, is characterized in that, described photosensitive sensors is that M shape is evenly distributed on described curtain body.
4. the projection brightness control method of self-adaptation optical projection system according to claim 1, is characterized in that, described wireless transmitter module and wireless receiving module are based on Zigbee network wireless connections.
5. the projection brightness control method of self-adaptation optical projection system according to claim 1, is characterized in that, the processor of described control module adopts 51 series monolithics.
6. the projection brightness control method of self-adaptation optical projection system according to claim 5, is characterized in that, the processor of described control module adopts AT89S52 single-chip microcomputer.
CN201410533377.3A 2014-10-11 2014-10-11 Projection brightness adjustment method of adaptive projection system CN104360567A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105700276A (en) * 2016-04-06 2016-06-22 浙江大学 Automatic positioning projector and automatic positioning method
CN107087148A (en) * 2017-06-30 2017-08-22 合肥久能图文科技有限公司 A kind of projector monitors self-adjusting system
CN107728413A (en) * 2016-08-12 2018-02-23 深圳市光峰光电技术有限公司 Optical projection system and the brightness adjusting method applied to optical projection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6461189A (en) * 1987-08-31 1989-03-08 Sony Corp Raster position measuring device
US20020085288A1 (en) * 2000-12-30 2002-07-04 Dewald Duane Scott Automated lamp focus
KR20040063553A (en) * 2003-01-08 2004-07-14 엘지전자 주식회사 A projection image display system for automatically controlling brightness and method thereof
WO2007100258A1 (en) * 2006-02-28 2007-09-07 3 D Perception As Method and device for use in calibration of a projector image display towards a display screen, and a display screen for such use
CN201917717U (en) * 2010-12-03 2011-08-03 深圳展景世纪科技有限公司 Light machine projection display system and projection screen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6461189A (en) * 1987-08-31 1989-03-08 Sony Corp Raster position measuring device
US20020085288A1 (en) * 2000-12-30 2002-07-04 Dewald Duane Scott Automated lamp focus
KR20040063553A (en) * 2003-01-08 2004-07-14 엘지전자 주식회사 A projection image display system for automatically controlling brightness and method thereof
WO2007100258A1 (en) * 2006-02-28 2007-09-07 3 D Perception As Method and device for use in calibration of a projector image display towards a display screen, and a display screen for such use
CN201917717U (en) * 2010-12-03 2011-08-03 深圳展景世纪科技有限公司 Light machine projection display system and projection screen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105700276A (en) * 2016-04-06 2016-06-22 浙江大学 Automatic positioning projector and automatic positioning method
CN107728413A (en) * 2016-08-12 2018-02-23 深圳市光峰光电技术有限公司 Optical projection system and the brightness adjusting method applied to optical projection system
CN107728413B (en) * 2016-08-12 2019-07-16 深圳光峰科技股份有限公司 Optical projection system and brightness adjusting method applied to optical projection system
CN107087148A (en) * 2017-06-30 2017-08-22 合肥久能图文科技有限公司 A kind of projector monitors self-adjusting system

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Application publication date: 20150218

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