CN110687740A - System for DLP projection low temperature starts - Google Patents
System for DLP projection low temperature starts Download PDFInfo
- Publication number
- CN110687740A CN110687740A CN201911135043.XA CN201911135043A CN110687740A CN 110687740 A CN110687740 A CN 110687740A CN 201911135043 A CN201911135043 A CN 201911135043A CN 110687740 A CN110687740 A CN 110687740A
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- China
- Prior art keywords
- temperature
- dmd chip
- light source
- microprocessor
- dlp projection
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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
- G03B21/16—Cooling; Preventing overheating
Abstract
The invention provides a DLP projection low-temperature starting system, and belongs to the field of DLP projection. In order to enlarge the use temperature range of DLP projection products and enable the DMD chip to be normally started in a low-temperature environment, the invention comprises the following steps: DMD chip, temperature-detecting device, microprocessor, and light source, wherein, temperature-detecting device, a temperature for detecting radiator around the DMD chip, and transmit to microprocessor, a temperature for transmitting according to temperature-detecting device, judge that DMD chip temperature is in low temperature environment, if yes, then open DLP projection product internal light source, make the light source get into low current mode, the light source shines on DMD chip surface through the illumination light path, the DMD chip does not start this moment, the DMD chip absorbs light energy and turns into heat energy, DMD chip temperature itself can rise automatically, when microprocessor judges that DMD chip temperature is in normal temperature environment, the system gets into normal start mode, the light source gets into normal mode.
Description
Technical Field
The invention relates to a DLP projection technology, in particular to a DLP projection low-temperature starting system.
Background
The projection product has the advantages of convenience in carrying, capability of randomly adjusting the projection size and the like, the acceptance of people is higher and higher, and the application scene and the application range of the product are wider and wider. Such as outdoor projection curtain walls, mobile projectors, vehicle-mounted projectors, and the like. With the diversification of products and the gradual increase of application fields, the requirements on the application range of the environmental temperature of projection products are higher and higher, such as in high cold and high heat areas and the like.
At present, DLP projection products have a plurality of methods for high temperature adaptation, such as fans, heat pipe radiators, liquid cooling radiators and the like. However, in low temperature adaptation, since the DMD chip, which is a key chip in a DLP system, requires a working temperature of 0 ℃ or above, the reliability and the service life of the DMD chip are affected. Other semiconductor components, optical components and other elements have wide working ranges, and if the temperature problem of the DMD chip in a low-temperature environment can be solved, the problem of the DLP projection low-temperature working range is solved.
Disclosure of Invention
The invention aims to provide a system for enabling a DMD chip to normally start DLP projection at low temperature.
The invention solves the technical problem, and adopts the technical scheme that: a system for DLP projection cold start comprising: the device comprises a DMD chip, a temperature detection device, a microprocessor and a light source;
the temperature detection device is used for detecting the temperature of the radiator around the DMD chip and transmitting the temperature to the microprocessor;
the microprocessor is used for judging whether the temperature of the DMD chip is in a low-temperature environment or not according to the temperature transmitted by the temperature detection device, if so, the internal light source of the DLP projection product is started, the light source enters a low-current working mode, the light source irradiates the surface of the DMD chip through an illumination light path, the DMD chip is not started at the moment, the DMD chip absorbs light energy and converts the light energy into heat energy, the temperature of the DMD chip can automatically rise, when the microprocessor judges whether the temperature of the DMD chip is in a normal temperature environment or not, the system enters a normal starting mode, and the light source enters a.
Preferably, the temperature detection device is a thermistor or a temperature detection chip.
Preferably, the light source is a bulb or an LED or a laser.
Preferably, the microprocessor is a separate plug-in microprocessor or a microprocessor already existing inside the DLP projection product.
The invention has the advantages that through the DLP projection low-temperature starting system, the temperature of the radiator around the DMD chip is firstly detected, then whether the temperature of the DMD chip is in a low-temperature environment or not is judged according to the temperature transmitted by the temperature detection device, if so, the internal light source of the DLP projection product is turned on, the light source enters a low-current working mode, the light source irradiates the surface of the DMD chip through an illumination light path, the DMD chip is not started at the moment, the DMD chip absorbs light energy and converts the light energy into heat energy, the temperature of the DMD chip can automatically rise, when the microprocessor judges whether the temperature of the DMD chip is in a normal temperature environment or not, the system enters a normal starting mode, and the light source enters a normal working mode.
Drawings
Fig. 1 is a block diagram of a system for low-temperature starting of DLP projection according to the present invention.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
The structural block diagram of the system for DLP projection low-temperature starting of the invention is shown in figure 1, wherein the system comprises: the device comprises a DMD chip, a temperature detection device, a microprocessor and a light source;
in the system, a temperature detection device is used for detecting the temperature of a radiator around the DMD chip and transmitting the temperature to a microprocessor; microprocessor for according to the temperature that temperature-detecting device transmitted, judge that the DMD chip temperature is in low temperature environment, if yes, then open DLP projection product internal light source, make the light source get into low current mode, the light source shines on DMD chip surface through the illumination light path, the DMD chip does not start this moment, the DMD chip absorbs the light energy and turns into heat energy, DMD chip temperature itself can rise automatically, when microprocessor judges that the DMD chip temperature is in normal temperature environment, the system gets into normal start mode, the light source gets into normal operating mode.
In the system, the temperature detection device may be a thermistor, a temperature detection chip, or the like according to the temperature detection requirement. To be able to generate light energy, the light source may be a bulb or LED or a laser, etc. In order to minimize hardware investment costs as much as possible, the microprocessor is a separate plug-in microprocessor or an already existing microprocessor inside the DLP projection product.
During practical application, the system microprocessor firstly detects the temperature of a radiator around the DMD chip in a low-temperature environment, when the temperature of the DMD chip is judged to be in the low-temperature environment, the DMD chip enters a low-temperature starting mode, only the internal light source of the DLP projection product is turned on, the DLP projection product enters a low-current working mode, the generated light source irradiates the surface of the DMD through an illumination light path, the DMD chip is not started at the moment, the DMD chip absorbs light energy and converts the light energy into heat energy, and the temperature of the chip can rise. After the MCU detects that the temperature of the radiator around the DMD is normal, the system enters a normal starting mode, and the light source enters a normal working mode, so that the purpose of starting the DLP projection in a low-temperature environment is achieved.
The system can make up the defect that DLP projection products cannot be used in a low-temperature environment, most elements and light paths use the original projection system devices and light paths, large modification is basically not needed, the method is simple, the cost is low, and the system can be widely applied to DLP projection products adopting DMD chips, including DLP projectors, DLP projection curtain walls, DLP laser televisions and the like.
Claims (4)
- A DLP projection cold start system, comprising: the device comprises a DMD chip, a temperature detection device, a microprocessor and a light source;the temperature detection device is used for detecting the temperature of the radiator around the DMD chip and transmitting the temperature to the microprocessor;the microprocessor is used for judging whether the temperature of the DMD chip is in a low-temperature environment or not according to the temperature transmitted by the temperature detection device, if so, the internal light source of the DLP projection product is started, the light source enters a low-current working mode, the light source irradiates the surface of the DMD chip through an illumination light path, the DMD chip is not started at the moment, the DMD chip absorbs light energy and converts the light energy into heat energy, the temperature of the DMD chip can automatically rise, when the microprocessor judges whether the temperature of the DMD chip is in a normal temperature environment or not, the system enters a normal starting mode, and the light source enters a.
- 2. The DLP projection cold start system according to claim 1, wherein said temperature detection device is a thermistor or a temperature detection chip.
- 3. The DLP projection cold start system as claimed in claim 1, wherein said light source is a bulb or LED or laser.
- 4. The DLP projection cold start system as claimed in claim 1, wherein said microprocessor is a separate plug-in microprocessor or a microprocessor already existing inside the DLP projection product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135043.XA CN110687740A (en) | 2019-11-19 | 2019-11-19 | System for DLP projection low temperature starts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135043.XA CN110687740A (en) | 2019-11-19 | 2019-11-19 | System for DLP projection low temperature starts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110687740A true CN110687740A (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911135043.XA Pending CN110687740A (en) | 2019-11-19 | 2019-11-19 | System for DLP projection low temperature starts |
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| CN (1) | CN110687740A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563866A (en) * | 2020-12-14 | 2021-03-26 | 四川长虹电器股份有限公司 | System and method for prolonging service life of digital micromirror device of laser projector |
| WO2022000927A1 (en) * | 2020-06-30 | 2022-01-06 | 长鑫存储技术有限公司 | Semiconductor apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569184Y (en) * | 2002-09-03 | 2003-08-27 | 大亿科技股份有限公司 | Reflective liquid crystal projection display device with stable picture quality |
| US20090034043A1 (en) * | 2007-07-31 | 2009-02-05 | Toshiyuki Kaeriyama | System and Method for Regulating Micromirror Position |
| CN101666967A (en) * | 2009-10-19 | 2010-03-10 | 四川长虹电器股份有限公司 | Device for improving normal operation of DLP projection in low temperature environment and method thereof |
| CN103257514A (en) * | 2012-01-10 | 2013-08-21 | 株式会社理光 | Communication device and control method for communication device |
| WO2017057001A1 (en) * | 2015-09-30 | 2017-04-06 | 日本精機株式会社 | Display device |
-
2019
- 2019-11-19 CN CN201911135043.XA patent/CN110687740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569184Y (en) * | 2002-09-03 | 2003-08-27 | 大亿科技股份有限公司 | Reflective liquid crystal projection display device with stable picture quality |
| US20090034043A1 (en) * | 2007-07-31 | 2009-02-05 | Toshiyuki Kaeriyama | System and Method for Regulating Micromirror Position |
| CN101666967A (en) * | 2009-10-19 | 2010-03-10 | 四川长虹电器股份有限公司 | Device for improving normal operation of DLP projection in low temperature environment and method thereof |
| CN103257514A (en) * | 2012-01-10 | 2013-08-21 | 株式会社理光 | Communication device and control method for communication device |
| WO2017057001A1 (en) * | 2015-09-30 | 2017-04-06 | 日本精機株式会社 | Display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000927A1 (en) * | 2020-06-30 | 2022-01-06 | 长鑫存储技术有限公司 | Semiconductor apparatus |
| CN112563866A (en) * | 2020-12-14 | 2021-03-26 | 四川长虹电器股份有限公司 | System and method for prolonging service life of digital micromirror device of laser projector |
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Application publication date: 20200114 |