CN110876044A - Projection system and automatic starting method of projection equipment - Google Patents
Projection system and automatic starting method of projection equipment Download PDFInfo
- Publication number
- CN110876044A CN110876044A CN201811003167.8A CN201811003167A CN110876044A CN 110876044 A CN110876044 A CN 110876044A CN 201811003167 A CN201811003167 A CN 201811003167A CN 110876044 A CN110876044 A CN 110876044A
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- Prior art keywords
- projection
- lens
- support
- protection device
- lens protection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/38—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by folding, e.g. pivoting or scissors tong mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
The projection system comprises projection equipment with a projection lens, a lens protection device, a supporting structure and a control circuit for controlling the projection lens to be opened and closed, wherein the supporting structure supports the projection equipment and drives the projection equipment to move, the lens protection device is linked with the supporting structure, a distance sensor for detecting the offset between the projection lens and the lens protection device is arranged on the projection equipment and/or the lens protection device, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches a preset value, the control circuit controls the projection lens to be opened. The projection system can realize the automatic opening of the projection equipment by controlling the position of the projection lens, so that the product is more automatic and intelligent, and the user experience is good.
Description
Technical Field
The invention belongs to the technical field of optical equipment, and particularly relates to a projection system and an automatic starting method of the projection equipment.
Background
The current product is designed to be a stand for manually opening a lens protection cover and supporting the lens protection cover, and when the lens protection cover is manually operated to a certain position (without blocking the lens), a starting circuit is triggered. Meanwhile, after the mobile phone is started, the bracket needs to be manually adjusted according to the position between the projection picture and the screen, so that the projection picture is just projected onto the screen and a clear image is presented. The manual adjustment of the bracket and the lens protection cover is inconvenient in practical application.
Therefore, there is a need to provide a new projection system and an automatic start-up method of a projection apparatus to solve the above problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing a novel projection system to solve the problems of incapability of automatic adjustment and inconvenience in manual adjustment in the prior art.
In order to solve the technical problems, the invention adopts a technical scheme that: the projection system comprises a projection lens, a lens protection device, a supporting structure and a control circuit for controlling the projection lens to be opened and closed, wherein the supporting structure supports the projection lens and drives the projection lens to move, the lens protection device is linked with the supporting structure, a distance sensor for detecting the deviation between the projection lens and the lens protection device is arranged on the projection lens and/or the lens protection device, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches a preset value, the control circuit controls the projection lens to be opened.
Preferably, the support structure is a support bracket, and includes a first support portion for supporting the projection apparatus, a second support portion corresponding to the first support portion, and a foldable connecting portion for connecting the first support portion and the second support portion, and under the external driving, the first support portion and the second support portion are mutually separated and drive the lens protection device to move relative to the projection lens.
Preferably, one of the first support portion and the second support portion has magnetism, and the other of the first support portion and the second support portion is magnetizable in the energized condition, so that the first support portion and the second support portion repel each other in the energized condition.
Preferably, the projection system further includes a motor connected to the lens protection device and driving the lens protection device to move, when the distance sensor detects that the support structure is in a certain state, the motor is controlled by the control circuit to rotate so as to drive the lens protection device to move relative to the projection lens.
Preferably, the first support part is a metal wound with a thin wire, and the second support part is a magnet.
Preferably, the support structure is a plurality of height-adjustable support feet.
Preferably, the supporting legs include first sleeve and second sleeve and the drive that establish each other the cover first sleeve with second sleeve relative motion's motor be provided with the lead screw in the first sleeve, be provided with on the second sleeve to first sleeve direction is extended and is established motion seat on the lead screw, motor drive the lead screw is rotatory to be realized first sleeve with relative displacement between the second sleeve.
Preferably, the supporting legs include the preceding supporting legs that are located near light-emitting window one side respectively and keep away from the back supporting legs of light-emitting window one side, preceding supporting legs with mutually independent control carries out altitude mixture control respectively between the back supporting legs.
Preferably, the lens protection device can be axially rotatably or translatably arranged in front of the light outlet, and the light outlet is opened or closed by the rotation or translation of the lens protection device.
In order to solve the technical problem, the invention adopts another technical scheme that: an automatic startup method of a projection device is provided, which comprises the projection system as described above, and comprises the following steps:
after the projection equipment is powered on, the support structure adjusts the position of the projection equipment under the external control and drives the lens protection device to move;
the distance sensor detects the offset between the projection lens and the lens protection device and inputs the offset into the control circuit;
the control circuit controls the projection equipment to start and work.
The invention has the beneficial effects that: different from the situation of the prior art, the projection system comprises a projection device with a projection lens, a lens protection device, a support structure and a control circuit for controlling the projection lens to be opened and closed, wherein the support structure supports the projection device and drives the projection device to move, the lens protection device is linked with the support structure, a distance sensor for detecting the deviation between the projection lens and the lens protection device is arranged on the projection device and/or the lens protection device, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches a preset value, the control circuit controls the projection lens to be opened. By arranging the distance sensor, the projection lens can be automatically opened according to a distance detection result, in practical application, the height of the supporting structure can be automatically adjusted through a remote controller so as to achieve the effect of ideal projection height, on one hand, both hands can be liberated, and more intelligent control can be realized; on the other hand, the abrasion caused by frequent breaking of the lens protection device and the moving of the lens support is avoided, the reliability of the product can be improved, the product is more automatic and intelligent, and the user experience is good.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a projection system according to the present invention;
FIG. 2 is a schematic view of a support structure for a first embodiment of the projection system of the present invention;
FIG. 3 is a circuit diagram illustrating the operation of a distance sensor in accordance with a first embodiment of the projection system of the present invention;
FIG. 4 is a schematic diagram of a second embodiment of a projection system according to the present invention;
FIG. 5 is a schematic view of another embodiment of a projection system according to the present invention;
FIG. 6 is a schematic view of a support structure for a second embodiment of the projection system of the present invention;
FIG. 7 is a schematic diagram of a third embodiment of a projection system according to the present invention;
FIG. 8 is a diagram illustrating an open state of a projection lens according to a third embodiment of the projection system of the present invention;
fig. 9 is a circuit diagram illustrating the operation of a distance sensor according to a third embodiment of the projection system of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a projection system to solve the problem that the projection system and projection equipment in the prior art cannot be intelligently started. The following description will be given with reference to specific embodiments.
Example one
As shown in fig. 1 to 3, the projection system of the present invention includes a projection apparatus having a projection lens 11, a lens protection apparatus 2, a support structure 3 supporting the projection apparatus 1, and a control circuit controlling the projection lens 11 to be turned on and off.
The lens protection device 2 is movably fixed on the projection lens 11. For example, the lens protection device 2 may be rotatably disposed in front of the projection lens 11 of the projection apparatus 1 in an axial direction, the lens protection device 2 is fixed to one side of the projection lens 11, and the projection lens 11 is opened or closed by rotation of the lens protection device 2.
The projection system of the invention comprises a distance sensor 4 for detecting the distance between the projection device 1 and the lens protection device 2, wherein the distance sensor 4 can be arranged on the projection device 1 or on the lens protection device 2, and of course, a distance sensor can be arranged on both the projection device 1 and the lens protection device 2. The distance sensor may be an infrared sensor or an ultrasonic distance sensor. In the present embodiment, a distance sensor 4 is mounted on each of the upper and lower vertical edges of the projection lens 11 of the projection apparatus 1. The infrared ray emitted by the emitting tube of the distance sensor 4 is reflected by the lens protection device 2, and if the receiving tube of the distance sensor 4 receives the reflected signal, it is proved that the lens protection device 2 and the projection lens 11 do not generate enough deviation, that is, the light outlet is not opened, and the projection system is still in a standby state. The projection system presets a preset value, specifically in this embodiment, the preset value is a distance between the distance sensor 4 and the lens protection device 2, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches the preset value, the control circuit controls the projection lens to be turned on, so as to automatically turn on the projection system.
In this embodiment, the supporting structure 3 is a liftable supporting stand, and includes a first supporting portion a for supporting the projection lens, a second supporting portion B corresponding to the first supporting portion a, and a foldable connecting portion for connecting the first supporting portion a and the second supporting portion. The second supporting part B is contacted with the external fixed surface and is used for supporting the whole projection system. The first support part a and the second support part B may be close to or away from each other in conjunction with the connecting part. Preferably, the first support portion a and the second support portion B are parallel to each other.
One of the first support part a and the second support part B has magnetism, and the other one can be magnetized under the power-on condition, so that the first support part and the second support part repel each other under the power-on condition, so that the projection device 1 rises along with the first support part a, and when the projection device 1 rises to a certain height, the projection lens 11 is opened. Specifically, in the present embodiment, the first support portion a is a metal wound with a thin wire, and the second support portion B is a magnet. Thus, under the condition of electrification, after the conducting wires of the first supporting part A are electrified, the first supporting part A is magnetized, and the first supporting part A and the second supporting part B are mutually repelled and separated.
Further, the projection system further includes a motor coupled to the lens protection device 2 and the support structure 3, and in practical applications, when a power-on signal is given, the support structure is powered on first. So that the support structure 3 starts to rise. After the first supporting portion a of the supporting structure 3 rises to a certain height, the electric motor connected to the lens protection device 2 starts to rotate, and drives the lens protection device 2 to start to rotate by a certain angle, so that the projection lens 11 is opened.
At the moment, the receiving tube of the distance sensor receives weak reflection signals, the control circuit determines that the lens is released and is in formal conduction, and the projection equipment enters a working state.
The control circuit is internally provided with an MCU main chip (Microcontroller Unit), a standby chip and a voltage comparator. Specifically, the control circuit comprises a main chip MCU, a standby chip, a voltage comparator and a distance sensor.
In the embodiment, the height of the supporting bracket can be automatically adjusted through a remote controller so as to achieve the effect of ideal projection height, on one hand, both hands can be liberated, and more intelligent control can be realized; on the other hand, the abrasion caused by frequent breaking of the lens protection device and the moving of the lens bracket is avoided, and the reliability of the product can be improved.
Example two
Referring to fig. 4 to 6, a second embodiment of the present invention is shown, which has substantially the same principle as the first embodiment, except that in this embodiment, the support structure 3 is a plurality of height-adjustable support legs.
As shown in fig. 6, the supporting leg includes a first sleeve 301, a second sleeve 302, and a motor 303 connected to and driving the first sleeve 301 and the second sleeve 302 to move relatively. In the present embodiment, the motor 303 is a stepping motor. A lead screw 3011 is arranged in the first sleeve 301, a moving seat 3021 which extends towards the first sleeve 301 and is sleeved on the lead screw 3011 is arranged on the second sleeve 302, and when the stepping motor rotates, the lead screw 3011 is driven to rotate to realize the relative displacement between the first sleeve 301 and the second sleeve 302, so that the height change supported by the supporting legs is realized.
Referring to fig. 5, in the present embodiment, there are two sets of support legs, including a front support leg 31 located on a side close to the projection lens 11 and a rear support leg 32 located on a side away from the projection lens 11, and the front support leg 31 and the rear support leg 32 are independently controlled to adjust the heights thereof, respectively. Thus, the projection angle of the projection lens can be changed by controlling the front supporting legs 31 and the rear supporting legs 32, respectively.
EXAMPLE III
Referring to fig. 7 to 9, a third embodiment of the present invention is substantially the same as the first two embodiments, except that in this embodiment, a lens protection device 2 is translatably disposed in front of the projection lens 11, and the projection lens 11 is opened or closed by the translation of the lens protection device 2.
As shown in fig. 9, the control circuit and sensor operation circuit diagram of the present embodiment is shown, in which U1 is a main chip MCU, U2 is a standby chip, U3 is a voltage comparator, and U4 is a distance sensor. The principle of the micro projector is the same as that of the previous embodiment, and the basic working principle is that when the support is contracted to a certain degree and the distance sensor cannot detect the support, the micro projector enters the starting state.
The invention also provides a projection device and an automatic starting method of the projection device, which comprise the projection system.
The automatic starting method of the projection equipment comprises the following steps:
firstly, the projection equipment is electrified through remote control or a mechanical switch, and then the position of the projection equipment is adjusted by a support structure under the control of the outside, such as the adjustment of a remote controller, and the lens protection device is driven to move;
the distance sensor detects the distance between the projection lens and the lens protection device and inputs the distance into the control circuit;
the control circuit controls the projection device to start to work, and the specific working process refers to the description of the projection device.
The invention has the beneficial effects that: different from the situation of the prior art, the projection system comprises a projection device with a projection lens, a lens protection device, a support structure and a control circuit for controlling the projection lens to be opened and closed, wherein the support structure supports the projection device and drives the projection device to move, the lens protection device is linked with the support structure, a distance sensor for detecting the deviation between the projection lens and the lens protection device is arranged on the projection device and/or the lens protection device, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches a preset value, the control circuit controls the projection lens to be opened. By arranging the distance sensor, the projection lens can be automatically opened according to a distance detection result, in practical application, the height of the supporting structure can be automatically adjusted through a remote controller so as to achieve the effect of ideal projection height, on one hand, both hands can be liberated, and more intelligent control can be realized; on the other hand, the abrasion caused by frequent breaking of the lens protection device and the moving of the lens support is avoided, the reliability of the product can be improved, the product is more automatic and intelligent, and the user experience is good.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A projection system is characterized by comprising a projection device with a projection lens, a lens protection device, a supporting structure and a control circuit for controlling the projection lens to be opened and closed, wherein the supporting structure supports the projection device and drives the projection device to move, the lens protection device is linked with the supporting structure, a distance sensor for detecting the position between the projection lens and the lens protection device is arranged on the projection device and/or the lens protection device, and when the distance sensor detects that the distance between the projection lens and the lens protection device reaches a preset value, the control circuit controls the projection lens to be opened.
2. The projection system of claim 1, wherein the support structure is a support stand including a first support portion for supporting the projection device, a second support portion corresponding to the first support portion, and a foldable connecting portion for connecting the first support portion and the second support portion, and the first support portion and the second support portion are separated from each other and drive the lens protection device to move relative to the projection lens under external driving.
3. The projection system of claim 2, wherein one of the first support and the second support has magnetic properties, and the other of the first support and the second support is magnetizable in the energized condition, such that the first support and the second support repel each other in the energized condition.
4. The projection system of claim 3, further comprising a motor coupled to the lens protection device and configured to move the lens protection device, wherein when the distance sensor detects that the distance between the support structure and the lens protection device reaches a certain state, the motor is controlled by the control circuit to rotate so as to move the lens protection device relative to the projection lens.
5. The projection system of claim 3, wherein the first support is a metal wound with a thin wire and the second support is a magnet.
6. The projection system of claim 1, wherein the support structure is a plurality of height adjustable support feet.
7. The projection system of claim 6, wherein the support foot comprises a first sleeve and a second sleeve that are sleeved with each other, and a motor that drives the first sleeve and the second sleeve to move relatively, a lead screw is disposed in the first sleeve, and a moving seat that extends toward the first sleeve and is sleeved on the lead screw is disposed on the second sleeve.
8. The projection system of claim 6, wherein the support legs comprise a front support leg at a side close to the light outlet and a rear support leg at a side far from the light outlet, and the front support leg and the rear support leg are independently controlled to perform height adjustment.
9. The projection system of claim 1, wherein the lens protection device is axially rotatably or translatably disposed in front of the light outlet of the projection lens, and the light outlet is opened or closed by rotation or translation of the lens protection device.
10. A method for auto-starting a projection device, comprising a projection system according to any one of claims 1 to 9, comprising the steps of:
after the projection equipment is powered on, the support structure adjusts the position of the projection equipment under the external control and drives the lens protection device to move;
the distance sensor detects the position between the projection lens and the lens protection device and feeds the position back to the control circuit;
and when the control circuit detects that the position reaches a preset value, the control circuit controls the projection equipment to start to work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003167.8A CN110876044B (en) | 2018-08-30 | 2018-08-30 | Projection system and automatic starting method of projection equipment |
| PCT/CN2019/076620 WO2020042562A1 (en) | 2018-08-30 | 2019-03-01 | Projection system and automatic powering-on method for projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003167.8A CN110876044B (en) | 2018-08-30 | 2018-08-30 | Projection system and automatic starting method of projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110876044A true CN110876044A (en) | 2020-03-10 |
| CN110876044B CN110876044B (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003167.8A Active CN110876044B (en) | 2018-08-30 | 2018-08-30 | Projection system and automatic starting method of projection equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110876044B (en) |
| WO (1) | WO2020042562A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349309A (en) * | 2020-11-05 | 2021-02-09 | 杭州职业技术学院 | Protective device for digital media player |
| CN113689349B (en) * | 2021-08-20 | 2023-03-24 | 广东海洋大学 | High-resolution area selection launching device and method for image denoising detection |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000241875A (en) * | 1999-02-19 | 2000-09-08 | Fujitsu General Ltd | Image display device |
| CN1545640A (en) * | 2002-06-10 | 2004-11-10 | 索尼株式会社 | Image projector |
| CN1811994A (en) * | 2005-01-27 | 2006-08-02 | 明基电通股份有限公司 | Electronic device and regulating foot base thereof |
| CN101000453A (en) * | 2006-01-09 | 2007-07-18 | 明基电通股份有限公司 | Lifting device of projection system |
| US20110075350A1 (en) * | 2006-05-04 | 2011-03-31 | Ergotron, Inc. | Stand with panning base |
| CN102200676A (en) * | 2010-03-24 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Image projection equipment |
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102608849A (en) * | 2012-03-23 | 2012-07-25 | 深圳雅图数字视频技术有限公司 | Projector lens protection device and projector |
| CN203823367U (en) * | 2014-05-07 | 2014-09-10 | 无锡商业职业技术学院 | Projector adjusting device |
| CN105972408A (en) * | 2016-06-25 | 2016-09-28 | 庄仁山 | Business projector with adjustable height |
| CN106227353A (en) * | 2016-08-05 | 2016-12-14 | 成都市极米科技有限公司 | A kind of operating mode control method and system |
| CN206817068U (en) * | 2017-06-03 | 2017-12-29 | 王思懿 | Projecting apparatus mounting bracket is used in one kind teaching |
-
2018
- 2018-08-30 CN CN201811003167.8A patent/CN110876044B/en active Active
-
2019
- 2019-03-01 WO PCT/CN2019/076620 patent/WO2020042562A1/en active Application Filing
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000241875A (en) * | 1999-02-19 | 2000-09-08 | Fujitsu General Ltd | Image display device |
| CN1545640A (en) * | 2002-06-10 | 2004-11-10 | 索尼株式会社 | Image projector |
| CN1811994A (en) * | 2005-01-27 | 2006-08-02 | 明基电通股份有限公司 | Electronic device and regulating foot base thereof |
| CN101000453A (en) * | 2006-01-09 | 2007-07-18 | 明基电通股份有限公司 | Lifting device of projection system |
| US20110075350A1 (en) * | 2006-05-04 | 2011-03-31 | Ergotron, Inc. | Stand with panning base |
| CN102200676A (en) * | 2010-03-24 | 2011-09-28 | 鸿富锦精密工业（深圳）有限公司 | Image projection equipment |
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102608849A (en) * | 2012-03-23 | 2012-07-25 | 深圳雅图数字视频技术有限公司 | Projector lens protection device and projector |
| CN203823367U (en) * | 2014-05-07 | 2014-09-10 | 无锡商业职业技术学院 | Projector adjusting device |
| CN105972408A (en) * | 2016-06-25 | 2016-09-28 | 庄仁山 | Business projector with adjustable height |
| CN106227353A (en) * | 2016-08-05 | 2016-12-14 | 成都市极米科技有限公司 | A kind of operating mode control method and system |
| CN206817068U (en) * | 2017-06-03 | 2017-12-29 | 王思懿 | Projecting apparatus mounting bracket is used in one kind teaching |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020042562A1 (en) | 2020-03-05 |
| CN110876044B (en) | 2021-11-12 |
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