CN105110106A - Projector used in elevator and control method of same - Google Patents
Projector used in elevator and control method of same Download PDFInfo
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- CN105110106A CN105110106A CN201510563224.8A CN201510563224A CN105110106A CN 105110106 A CN105110106 A CN 105110106A CN 201510563224 A CN201510563224 A CN 201510563224A CN 105110106 A CN105110106 A CN 105110106A
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Abstract
The invention discloses a projector used in an elevator and a control method of the same. The device comprises a DLP projector which is used to project a frame, an acceleration sensor which is used to collect an acceleration of the elevator in the gravity direction, a data processing unit which is used to realize filtering processing and mean processing of data collected by the acceleration sensor, a state determination unit which is used to determine an operation state of the elevator according to the data output by the data processing unit and a control unit which is used to control a DMD device in a DLP projection module according to a result determined by the state determination unit so as to start or stop the frame projection. The invention puts forward the projector which can almost prevent a projection lens from giving out light without closing a power source and can effectively increase service life of projection equipment.
Description
Technical field
The present invention relates to technical field of electricity, particularly relate to a kind of for the projection arrangement in elevator and control method thereof.
Background technology
Along with demand is suggested gradually, elevator inner projection technology has not been be mentioned first time, and various technical scheme is also constantly suggested, and segmentation scheme also has patent to produce, but commercial product never ripe on market occurs.Trace it to its cause, be its scheme comprise electric in, operation stability aspect and the various problems existed when installing and using, mainly contain following 2 points:
Valve projection power supply is infeasible in electric stability.Because elevator switch door is frequent, the frequent switch of power supply certainly will affect projected lifetime, all causes irreversible infringement to light source and circuit, and each subsystem power supply of switch needs the time, in the elevator flow process run fast, also cannot catch up with elevator switch door step.
In running process of elevator, keep away the various irregular vibrations of unavoidable appearance, particularly during on-board and off-board, existing scheme, at detection elevator motion state aspect, does not also provide effective method, to tackle the disturbed condition in actual use procedure.
For understanding the principle of the application better, here the patented technology DLP shadow casting technique of TIX is simply described.
Fig. 1 is the principle of DLP technology:
Specifically, light source sends white light, under the effect of light-dividing device, is divided into RGB tri-look, is radiated on DMD micromirror device simultaneously, the light splitting of DMD device reflecting part, from camera lens injection, presents projected picture.
Fig. 2 is the cell schematics in DMD micromirror device:
Its each unit is a micromirror with two degree of freedom, be used for controlling the angle of reflected light rays, light can be made to penetrate from camera lens, light also can be made to be irradiated on light absorption plate, by regulating the amount of light from camera lens injection, the color of display can be made to present different brightness.A large amount of unit assembly together, has reflected the picture needed for user.
Summary of the invention
The technical problem to be solved in the present invention is for defect of the prior art, provides a kind of for the projection arrangement in elevator and control method thereof.
The technical solution adopted for the present invention to solve the technical problems is:
For the projection arrangement in elevator, comprising:
DLP projection arrangement, for projection image;
Acceleration pick-up, for gathering the acceleration/accel of elevator on gravity direction;
Data processing unit, for carrying out filtering process and average value processing to the data of acceleration pick-up collection;
Status determining unit, for the running state of data determination elevator exported according to data processing unit;
Control unit, for the result determined according to status determining unit, the DMD device in control DLP projection module, realizes the start and stop of projected picture;
Elevator operational monitoring unit, for determining that the running state of elevator is normal operation, fault or the one in having a power failure.
By such scheme, described status determining unit, for the running state of data determination elevator exported according to data processing unit, described running state comprises static, rise (accelerate to rise, at the uniform velocity rise, risings of slowing down), decline (acceleration decline, uniform descent, deceleration decline).
By such scheme, the running state of the elevator that described control unit is determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close.
For a control method for the projection arrangement in elevator, described projection arrangement comprises DLP projection module, and the core of DLP projection module is DMD device, and the method comprises the following steps:
1) use is arranged on acceleration pick-up in elevator and gathers the acceleration/accel of elevator on gravity direction;
2) sensing data after filtering process and average value processing acquisition process is carried out to the data of acceleration pick-up collection; Wherein, filtering process adopts FIR(to have limit for length's unit impulse response) filtering algorithm, average value processing adopts local mean value method, and its local is limited unit head;
3) according to the sensing data after process, the running state of elevator is determined; Described running state comprise static, rise and decline;
4) running state of the elevator determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close; Concrete control method is as follows:
When elevator stops, the elevator that status determining unit is determined operates to static, and player is to projection module output black picture, and its all pixel RGB data values is 0, and each microwafer in controller control DMD device, makes reflected light rays not penetrate from camera lens.
In elevator motion process, the running state of status determining unit determination elevator is for rising or declining, and player exports normal image frame to projection module, each microwafer in controller control DMD device, to reflect the RGB numerical value of each pixel in picture, picture penetrates from camera lens.
The beneficial effect that the present invention produces is: the present invention proposes one and PTO Power Take Off just need not can make projection lens almost non-luminous projection arrangement, effectively can improve the life-span of projection equipment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the DLP shadow casting technique schematic diagram in background technology of the present invention;
Fig. 2 is the cell schematics in the DMD micromirror device in background technology of the present invention;
Fig. 3 is the structural representation in the embodiment of the present invention;
Fig. 4 is the running state schematic diagram of the elevator in the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
For the projection arrangement in elevator, comprising:
For the projection arrangement in elevator, comprising:
DLP projection arrangement, for projection image;
Acceleration pick-up, for gathering the acceleration/accel of elevator on gravity direction;
Data processing unit, for carrying out filtering process and average value processing to the data of acceleration pick-up collection;
Status determining unit, for the running state of data determination elevator exported according to data processing unit;
Control unit, for the result determined according to status determining unit, the DMD device in control DLP projection module, realizes the start and stop of projected picture;
Elevator operational monitoring unit, for determining that the running state of elevator is normal operation, fault or the one in having a power failure.
Status determining unit, for the running state of data determination elevator exported according to data processing unit, described running state comprises static, rise (accelerate to rise, at the uniform velocity rise, risings of slowing down), decline (acceleration decline, uniform descent, deceleration decline).
The running state of the elevator that control unit is determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close.
Apparatus of the present invention each several part is by 3G/4G, WIFI, and bluetooth, USB etc. are wireless and wire transmission mode communication.
As shown in Figure 3, a kind of control method for the projection arrangement in elevator, described projection arrangement comprises DLP projection module, and the core of DLP projection module is DMD device, and the method comprises the following steps:
1) use is arranged on acceleration pick-up in elevator and gathers the acceleration/accel of elevator on gravity direction;
2) sensing data after filtering process and average value processing acquisition process is carried out to the data of acceleration pick-up collection; Wherein, filtering process adopts FIR(to have limit for length's unit impulse response) filtering algorithm, average value processing adopts local mean value method, and its local is limited unit head;
3) with the sensing data after process, substitute into state machine model, determine the running state of elevator; Described running state comprises static, rise (accelerate rises, at the uniform velocity rise, rising of slowing down), decline (acceleration is risen, at the uniform velocity rise, rising of slowing down)
In embodiment, state machine model as shown in Figure 4, and for lower floor span, constant velocity stage may not experience.
Upper figure describes following conclusion:
1., from quiescence, elevator may be only acceleration mode.After acceleration mode, if acceleration/accel returns initial point, then may be only enter uniform speed motion state.After uniform speed motion state, if acceleration offset initial point, then may be only deceleration regime.After deceleration regime, if acceleration/accel gets back to initial point, then only quiescence may be entered.Namely the arrow on figure is irreversible, also can not intersect, and this is all applicable for most elevator.
2. if acceleration/accel does not perform according to the situation on figure, then illustrate that it has occurred interference in operational process, as power failure or elevator acutely rock, it will rejudge residing state and recover normal and run in next cycle.
3. perform in the process of the 2nd article in reality, sometimes need to judge that elevator is quiescence or uniform speed motion state.For most of elevator, only need to judge that its Last status accelerates or slows down, because when it accelerates and slows down, acceleration/accel is usually different.The elevator identical with deceleration brief acceleration numerical value is accelerated for small part, then needs a pressure-altitude sensor to be installed, with auxiliary judgment elevator motion state in addition.
4. after judging elevator operation, just can control interface switch accordingly, elevator just can open the door after coming to a complete stop under normal circumstances, this brief acceleration is at initial point.Elevator door just to move after cutting out completely, now acceleration offset initial point.In the interval that this elevator door is opened, projected picture is in closed condition all the time, can not be irradiated to the passenger of escalator; And in the interval that elevator door cuts out, projection is then in the state opened, normal play picture all the time.
4) running state of the elevator determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close;
Concrete control method is as follows:
When elevator stops, the elevator that status determining unit is determined operates to static, and player is to projection module output black picture, and its all pixel RGB data values is 0, and each microwafer in controller control DMD device, makes reflected light rays not penetrate from camera lens.
In elevator motion process, the running state of status determining unit determination elevator is for rising or declining, and player exports normal image frame to projection module, each microwafer in controller control DMD device, to reflect the RGB numerical value of each pixel in picture, picture penetrates from camera lens.
Picture control process:
In the introduction, contriver has described the principle of work of DLP shadow casting technique and core DMD parts thereof, on this principle of work basis, is analyzed and can draw the following conclusions:
1. projection light source is irradiated in the micromirror in DMD, is the process of a mirror-reflection, and reflected light rays is in strict accordance with the light path injection calculated.
The micromirror of 2.DMD, by the adjustment of the axle below it, can make reflected light rays all impinge upon consecutive variations light absorbent from all injecting to from camera lens.
3. all from camera lens injection corresponding is that projection lens is the brightest, all impinging upon corresponding on light absorbent is that camera lens is the darkest, luminous hardly.
4. projection light source obtains RGB tri-look through light splitting, impinges upon on DMD respectively, if camera lens will be made the darkest, then on DMD, each micromirror is in the darkest state, and corresponding is that on view picture RGB picture, each pixel is in the darkest state.
5. for RGB color space, the state that its three look all the darkest is Red:0, Green:0, Blue:0, and corresponding color is black.
That is, as long as make projection output black picture, camera lens can be made the darkest, luminous hardly.Thus indirectly achieve the object of closing projection lens.Contriver is referred to as image close to distinguish with power-off, and " closedown " is wherein to vividly describe this process, does not perform the operation of closedown and so in reality, and the picture only doing software view switches.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (6)
1. for the projection arrangement in elevator, it is characterized in that, comprising:
DLP projection arrangement, for projection image;
Acceleration pick-up, for gathering the acceleration/accel of elevator on gravity direction;
Data processing unit, for carrying out filtering process and average value processing to the data of acceleration pick-up collection;
Status determining unit, for the running state of data determination elevator exported according to data processing unit;
Control unit, for the result determined according to status determining unit, the DMD device in control DLP projection module, realizes the start and stop of projected picture.
2. projection arrangement according to claim 1, is characterized in that, also comprises:
Elevator operational monitoring unit, for determining that the running state of elevator is for normal operation, fault or power failure;
Described control unit, if also for the running state of elevator operational monitoring unit determination elevator be fault or have a power failure time, stop the work of DLP projection arrangement.
3. projection arrangement according to claim 1, is characterized in that, described status determining unit, for the running state of data determination elevator exported according to data processing unit, described running state comprise static, rise and decline.
4. projection arrangement according to claim 3, is characterized in that, the running state of the elevator that described control unit is determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close.
5. projection arrangement according to claim 4, is characterized in that, the concrete control method of described control unit is as follows:
When elevator stops, the elevator that status determining unit is determined operates to static, and player is to projection module output black picture, and its all pixel RGB data values is 0, and each microwafer in control DMD device makes reflected light rays not penetrate from camera lens;
In elevator motion process, the running state of status determining unit determination elevator is for rising or declining, and player exports normal image frame to projection module, each microwafer in control DMD device, to reflect the RGB numerical value of each pixel in picture, picture penetrates from camera lens.
6. for a control method for the projection arrangement in elevator, described projection arrangement comprises DLP projection module, and the core of DLP projection module is DMD device, and it is characterized in that, the method comprises the following steps:
1) use is arranged on acceleration pick-up in elevator and gathers the acceleration/accel of elevator on gravity direction;
2) sensing data after filtering process and average value processing acquisition process is carried out to the data of acceleration pick-up collection; Wherein, filtering process adopts FIR filtering algorithm; Average value processing adopts local mean value method, and its local is limited unit head;
3) according to the sensing data after process, the running state of elevator is determined; Described running state comprise static, rise and decline;
4) running state of the elevator determined according to status determining unit, when running state is for rising or declining, controls projected picture and opens; When running state is static, controls projected picture and close;
Concrete control method is as follows:
When elevator stops, the elevator that status determining unit is determined operates to static, and player is to projection module output black picture, and its all pixel RGB data values is 0, and each microwafer in control DMD device makes reflected light rays not penetrate from camera lens;
In elevator motion process, the running state of status determining unit determination elevator is for rising or declining, and player exports normal image frame to projection module, each microwafer in control DMD device, to reflect the RGB numerical value of each pixel in picture, picture penetrates from camera lens.
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| CN201510563224.8A CN105110106A (en) | 2015-09-07 | 2015-09-07 | Projector used in elevator and control method of same |
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| CN201510563224.8A CN105110106A (en) | 2015-09-07 | 2015-09-07 | Projector used in elevator and control method of same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335824A (en) * | 2016-09-23 | 2017-01-18 | 易丰传媒（深圳）有限公司 | Multimedia device inside elevator and playing control method of multimedia device |
| CN106686360A (en) * | 2016-12-15 | 2017-05-17 | 广东威创视讯科技股份有限公司 | LED light source control method and system for DLP projector |
| CN108285068A (en) * | 2017-01-09 | 2018-07-17 | 航天信息股份有限公司 | Play system in elevator and control method for playing back |
| CN108698785A (en) * | 2015-12-18 | 2018-10-23 | 因温特奥股份公司 | Lift facility with target call controller |
| CN109720969A (en) * | 2019-02-15 | 2019-05-07 | 苏州芯创智汇电子科技有限公司 | A kind of elevator being easily installed is interior to project multimedia machine |
| CN110907981A (en) * | 2019-12-09 | 2020-03-24 | Oppo广东移动通信有限公司 | Positioning mode control method and device and electronic equipment |
| CN114132808A (en) * | 2020-09-03 | 2022-03-04 | 北京梯影传媒科技有限公司 | Projection device and method capable of identifying opening and closing states of elevator door |
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| CN108698785A (en) * | 2015-12-18 | 2018-10-23 | 因温特奥股份公司 | Lift facility with target call controller |
| CN106335824A (en) * | 2016-09-23 | 2017-01-18 | 易丰传媒（深圳）有限公司 | Multimedia device inside elevator and playing control method of multimedia device |
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| CN109720969A (en) * | 2019-02-15 | 2019-05-07 | 苏州芯创智汇电子科技有限公司 | A kind of elevator being easily installed is interior to project multimedia machine |
| CN110907981A (en) * | 2019-12-09 | 2020-03-24 | Oppo广东移动通信有限公司 | Positioning mode control method and device and electronic equipment |
| CN114132808A (en) * | 2020-09-03 | 2022-03-04 | 北京梯影传媒科技有限公司 | Projection device and method capable of identifying opening and closing states of elevator door |
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Effective date of registration: 20151209 Address after: 200023 No. 1503 A0201 neighborhood, Lingang hi tech industrialization base, Shanghai, Pudong New Area Applicant after: SHANGHAI DIANLUO INFORMATION TECHNOLOGY CO., LTD. Address before: Luo East Lake New Technology Development Zone, Hubei city of Wuhan Province Yu Road 430074 hi tech building 8 floor Applicant before: Wuhan Vivmotion Science & Technology Co., Ltd. |
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Application publication date: 20151202 |