CN203455572U - Projection system having safety protection function - Google Patents
Projection system having safety protection function Download PDFInfo
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- CN203455572U CN203455572U CN201320592408.3U CN201320592408U CN203455572U CN 203455572 U CN203455572 U CN 203455572U CN 201320592408 U CN201320592408 U CN 201320592408U CN 203455572 U CN203455572 U CN 203455572U
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- infrared
- projection
- controller
- detection sensor
- projection system
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Abstract
The utility model discloses a projection system having a safety protection function. The projection system comprises a projector, a projection screen and an infrared detection sensor. The projector comprises a central control unit, a projection display controller and an infrared controller. The central control unit is connected with the infrared controller and the projection display controller, the infrared detection sensor is connected with the infrared controller, and the projection screen is connected with the projection display controller. The projection system is of simple structure, and is safe and reliable, and the projection system has the safety protection function that a projection mode can be changed or the projection screen can be closed when a person staying in front of the protection screen is detected.
Description
Technical field
The utility model relates to projection display technique field, and whether especially relate to a kind of Intellisense has human body resident and automatically change projection mode or close the optical projection system of projection screen.
Background technology
Optical projection system is a kind of a kind of optics or display system that display is projected to specific screens, is widely used in family, office and public place of entertainment.Use mobile projector instrument mobile phone when projection, light is radiated at human body, particularly such as child plays before projection screen or curious projecting function is looked at, highlighted light be irradiated to its eyes or with it, can cause the injury certain to eyes, in order to address this problem, some high-end projector increase G-SENSOR sensor circuit in circuit at present, typical system forms structure as shown in Figure 1, known this optical projection system generally comprises projector and as the projection screen of projected background, projector mainly comprises central control unit and Projection Display controller, central control unit connects G-SENSOR sensor, can realize the variation along with center of gravity, thereby make projector cursor change location carry out function selection and execution, there are two problems in this scheme: the one, and projector is mainly used in the calibration that distorts, must be that center of gravity changes, just can change by practical function, the 2nd, projector can not be along with extraneous emergency case is closed projecting function when projection, thereby can not accomplish that safety is anti-
Protect, affected security and the experience sense of consumer to product of product.
Utility model content
The purpose of this utility model is the deficiency for prior art, provides a kind of can human body resident and change projection mode or close the optical projection system with function of safety protection of projection screen.
To achieve these goals, the technical scheme that the utility model provides is: a kind of optical projection system with function of safety protection is provided, comprise projector, projection screen and infrared detection sensor, described projector comprises central control unit, Projection Display controller and infrared controller; Wherein, described central control unit connects infrared controller and Projection Display controller, and described infrared detection sensor is connected to infrared controller, and described projection screen connects Projection Display controller.
On described projector, infrared interface is set, described infrared detection sensor is connected with infrared controller by infrared interface.
Described infrared detection sensor top is provided with the optical filter that transparent wavelength range is 7-10 μ m.
The optical projection system with function of safety protection described in the utility model; utilize infrared detection sensor to survey human infrared radiation signal; thereby whether human body is passed through or is resident; when detect human body through or child when resident; signal is by infrared controller, central control unit and Projection Display controller; by Projection Display controller, change the projection mode of projection screen or directly close projection screen, having protected human-body safety, having reached the function of security protection.
Accompanying drawing explanation
Fig. 1 is for utilizing at present the composition structural representation of the optical projection system of G-SENSOR sensor;
Fig. 2 is the system architecture schematic diagram of the utility model embodiment optical projection system with function of safety protection;
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, in accompanying drawing, similarly element numbers represents similar element.
It is a kind of can human body resident and change projection mode or close the optical projection system with function of safety protection of projection screen that the utility model embodiment provides.
As shown in Figure 2, a kind of optical projection system with function of safety protection described in the utility model, comprises projector, projection screen and infrared detection sensor, and described projector comprises central control unit, Projection Display controller and infrared controller; Wherein, described central control unit connects infrared controller and Projection Display controller, and described infrared detection sensor is connected to infrared controller, and described projection screen connects Projection Display controller.
On described projector, infrared interface is set, described infrared detection sensor is connected with infrared controller by infrared interface.
Concrete upper, infrared detection sensor is mainly comprised of optical lens, infrared sensor and operational amplification circuit.Operational amplification circuit wherein, be mainly that the faint infrared voltage signal receiving is amplified, if coordinated with optical lens, signal can be amplified more than 60 decibels, so just can measure the action of people within the scope of 12 meters, guarantee detection range and the sensitivity of infrared detection sensor function.Take Thermoelectric Infrared Sensor as example, Thermoelectric Infrared Sensor is mainly the material by a kind of high Seebeck coefficient, as lead zirconate titanate system pottery, lithium tantalate, triglycine sulfate etc. are made the detecting element that is of a size of 2*1mm, and the peripheral circuits that coordinates its work superperformance.Generally, at a Fresnel Lenses of the place ahead of detector installing, these lens are made with transparent plastic, and upper and lower two parts of lens are respectively divided into some equal portions, make a kind of lens with special optical system.
The infrared ray centre wavelength of human body radiation is 9～10um, and the wavelength sensitivity of detecting element almost stable within the scope of 0.2～20um is constant.Need to offer on infrared detection sensor top a window that filter glass is housed thus, this optical filter can be 7～10um by light wavelength scope, just in time be suitable for the detection of human infrared radiation, and the infrared ray of other wavelength is absorbed by optical filter, so just formed a kind of special infrared ray sensor as surveying human body radiation.
During optical projection system work, when projection screen indication range does not have human body resident, infrared detection sensor is surveyed the infrared radiation less than human body, the infrared messages gathering is transferred to infrared controller by infrared interface, under the control of central controller, data are sent to Projection Display controller, and described projection screen is connected to Projection Display controller, and display controller controlling projection screen normally shows.Otherwise, when projection screen indication range has human body resident, infrared detection sensor just can detect the infrared radiation of human body, the infrared messages now gathering is transferred to infrared controller by infrared interface, under the control of central controller, data are sent to Projection Display controller, and described projection screen is connected to Projection Display controller, display controller controlling projection screen is closed, and controlling projection does not show.
In conjunction with Fig. 2; the optical projection system with function of safety protection described in the utility model; utilize infrared detection sensor to survey human infrared radiation signal; thereby whether human body is passed through or is resident; when detect human body through or child when resident, signal, by infrared controller, central control unit and Projection Display controller, is changed the projection mode of projection screen or is directly closed projection screen by Projection Display controller; protect human-body safety, reached the function of security protection.
Above disclosed is only preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim, still belongs to the scope that the utility model is contained.
Claims (3)
1. an optical projection system with function of safety protection, is characterized in that, comprises projector, projection screen and infrared detection sensor, and described projector comprises central control unit, Projection Display controller and infrared controller; Wherein, described central control unit connects infrared controller and Projection Display controller, and described infrared detection sensor is connected to infrared controller, and described projection screen connects Projection Display controller.
2. the optical projection system with function of safety protection as claimed in claim 1, is characterized in that, on described projector, infrared interface is set, and described infrared detection sensor is connected with infrared controller by infrared interface.
3. the optical projection system with function of safety protection as claimed in claim 1, is characterized in that, described infrared detection sensor top is provided with the optical filter that transparent wavelength range is 7-10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320592408.3U CN203455572U (en) | 2013-09-25 | 2013-09-25 | Projection system having safety protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320592408.3U CN203455572U (en) | 2013-09-25 | 2013-09-25 | Projection system having safety protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455572U true CN203455572U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320592408.3U Expired - Fee Related CN203455572U (en) | 2013-09-25 | 2013-09-25 | Projection system having safety protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN203455572U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105474092A (en) * | 2013-08-26 | 2016-04-06 | 索尼公司 | Projection display having an image pickup function |
| WO2016149983A1 (en) * | 2015-03-24 | 2016-09-29 | 海信集团有限公司 | Human body protecting method and apparatus for laser projection device, and laser projection device |
| CN109448602A (en) * | 2018-12-04 | 2019-03-08 | 三峡大学 | A kind of projection cultural spreading system with warning function |
| CN110955105A (en) * | 2019-12-20 | 2020-04-03 | 青岛海信激光显示股份有限公司 | Laser projection device |
-
2013
- 2013-09-25 CN CN201320592408.3U patent/CN203455572U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105474092A (en) * | 2013-08-26 | 2016-04-06 | 索尼公司 | Projection display having an image pickup function |
| US9696854B2 (en) | 2013-08-26 | 2017-07-04 | Sony Corporation | Projection display |
| WO2016149983A1 (en) * | 2015-03-24 | 2016-09-29 | 海信集团有限公司 | Human body protecting method and apparatus for laser projection device, and laser projection device |
| CN109448602A (en) * | 2018-12-04 | 2019-03-08 | 三峡大学 | A kind of projection cultural spreading system with warning function |
| CN110955105A (en) * | 2019-12-20 | 2020-04-03 | 青岛海信激光显示股份有限公司 | Laser projection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |