CN101021677A - Testing device and method for filter network state - Google Patents
Testing device and method for filter network state Download PDFInfo
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- CN101021677A CN101021677A CN 200610004243 CN200610004243A CN101021677A CN 101021677 A CN101021677 A CN 101021677A CN 200610004243 CN200610004243 CN 200610004243 CN 200610004243 A CN200610004243 A CN 200610004243A CN 101021677 A CN101021677 A CN 101021677A
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- filter screen
- network state
- optical sensor
- test pieces
- change color
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Abstract
The invention relates to a filter net state test device and method. And the test device is to be installed in an electronic device comprising intake and dustproof filter net, such as a projector, and comprising filter net state test plate and photosensor, where the filter net state test plate is inserted in the dustproof filter net and the photosensor is used to sense the color variation of the filter net state test plate to determine the state of the dustproof filter net. And the method comprises sensing a color variation of the dustproof filter net and determining the state of the dustproof filter net according to this color variation.
Description
Technical field
The invention relates to a kind of proving installation, and particularly relevant for a kind of proving installation and method of filter network state.
Background technology
In the tradition projector, give birth to heat easily as the bulb of light emitting source and make temperature very high, therefore the possibility that causes quick-fried lamp is arranged, general projector all utilizes cooling system to reduce the temperature of bulb.Cooling system generally is to utilize the air channel to make the hot-air in the projector to discharge smoothly, and can import extraneous cold air.Ventilating opening in projector also can add dustproof filter screen to filter the dust of outside air.
In order to prevent that filter screen is through using and dirty obstruction for a long time, cause the minimizing into air quantity, tradition is to adopt the mode of timing to determine whether change filter screen, that is to say through a special time, after for example using 2000 hours, projector's signal that can give a warning tells the user to change filter screen.
Yet the user mode of filter screen is very different with environment for use.If the user uses projector under the very low environment of dust fall amount, though use warning afterwards in 2000 hours will change filter screen, the filter screen of this moment is also very clean need not changed.Perhaps, when the user uses under the high environment of dust fall content, filter screen may take place clogged and can't use, but the still no show of warning time.Therefore, when the user still clogs at filter screen, continue under the situation of inlet air cool stream quantity not sufficient to use projector, easily cause light emitting source overheated and cause the danger of quick-fried lamp.
Summary of the invention
In view of this, purpose of the present invention is exactly to be the state of the dustproof filter screen of sensing correctly.
According to purpose of the present invention, a kind of proving installation of filter network state is proposed, in order to be installed in the electronic equipment that includes ventilating opening and dustproof filter screen.Proving installation comprises filter network state test pieces and optical sensor.The filter network state test pieces is embedded in dustproof filter screen.Optical sensor is in order to the change color amount of sensing filter network state test pieces, to determine the state of dustproof filter screen.
According to purpose of the present invention, a kind of projector is more proposed, comprise light source, optical processor, projection lens set, ventilating opening, dustproof filter screen, filter network state test pieces and optical sensor.Light source is in order to the generation light beam, and optical processor produces image according to light beam.Projection lens set with video imaging to display surface.Dustproof filter screen is disposed at ventilating opening, and the filter network state test pieces is embedded in dustproof filter screen.In projector's operation, optical sensor is measured the change color amount of filter network state test pieces, to determine the state of dustproof filter screen.
According to purpose of the present invention, a kind of method of testing filter network state is proposed more.The method comprise a change color amount of the dustproof filter screen of sensing and according to this change color amount to determine the state of dustproof filter screen.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is the functional block diagram according to the projector of one embodiment of the present invention
Fig. 2 is the synoptic diagram of dustproof filter screen 220.
Fig. 3 is the optical sensor synoptic diagram according to one embodiment of the present invention.
Fig. 4 is the method flow diagram according to the test filter network state of one embodiment of the present invention.
The primary clustering symbol description
100: projector
200: dust prevention system
110: light source
120: optical processor
130: projection lens set
210: ventilating opening
220: dustproof filter screen
222: the filter network state test pieces
224: filter disc
240: optical sensor
300: display surface
DI: image
PF: picture
B1: light beam
B2: folded light beam
Embodiment
Fig. 1 is the functional block diagram according to a kind of projector of one embodiment of the present invention.Projector 100 is in a display surface 300 in order to display frame PF.Projector 100 comprises light source 110, optical processor 120, projection lens set 130 and a dust prevention system 200 at least.Light source 110 is in order to produce a light beam OB, it is reached optical processor 120.Optical processor 120 produces an image DI according to light beam OB, and see through projection lens set 130 with its imaging to display surface 300, to reach the effect of projection.Dust prevention system 200 comprises ventilating opening 210, dustproof filter screen 220 and filter network state pick-up unit.Pick-up unit comprises filter network state test pieces 222 and optical sensor 240.
Please refer to Fig. 2, it is depicted as the synoptic diagram of dustproof filter screen 220.Dustproof filter screen 220 is made up of a plurality of filter discs 224 that for example are expanded material constitutes, and has filter network state test pieces 222 to embed wherein.Filter network state test pieces 222 is made of adhesive-bonded fabric.
When a dustproof filter screen 220 after a period of time, because of dust deposit dirty, for example black by white commentaries on classics.Filter disc 224 is owing to be to utilize expanded material to constitute, and its density unevenness is even, has very big error if be used for as test filter screen blocked state.Present embodiment embeds test pieces 222 in addition in dustproof filter screen 220, its material for example is a density adhesive-bonded fabric comparatively uniformly, therefore is used for testing actual filter screen blocked state and has more correct result.Therefore, by the change color amount that detects filter network state test pieces 222, optical sensor 240 just can determine the state of dustproof filter screen 220 effectively, changes filter screen to remind the user.
Please refer to Fig. 3, it is depicted as the optical sensor synoptic diagram according to the preferred embodiment of the present invention.One light beam B1 is to filter network state test pieces 222 in optical sensor 240 outputs.When light beam B1 conducts to filter network state test pieces 222, reflect via filter network state test pieces 222 surfaces.Optical sensor 240 thereby receive beam reflected B2, and try to achieve the change color amount according to catoptrical RGB composition.For judging change in color, optical sensor 240 is preset with a default color value, and when optical sensor 240 received beam reflected B2, the default therewith color value of more measured change color amount was to determine the state of this dustproof filter screen.And, then represent filter screen dirty dirty when change color amount during greater than default color value, therefore sending relevant warning signal and carrying out screen replacing to notify the user.Be more accurate detection change color, present embodiment becomes to assign to measure the change color of filter network state test pieces by the RGB that analyzes folded light beam B2.In addition, present embodiment also can only be judged change color by the GTG value that measures folded light beam B2.
Please refer to Fig. 4, it is the process flow diagram according to the method for the test filter network state of the preferred embodiment of the present invention.The method of the test filter network state of present embodiment is to be used for projector 100.At first, execution in step 410 is in order to exporting a light beam B1 to this filter network state test pieces 222 with optical sensor 240.Afterwards, in step 415, receive the rgb light bundle B2 that reflected by filter network state test pieces 222 to calculate the change color amount of dustproof filter screen.Then, in step 420, whether decision change color amount is greater than default color value.If the change color amount greater than default color value, in step 430, then shows relevant warning signal.Therefore, the user can warn the unlatching of signal by being correlated with, and learns that dustproof filter screen needs to change.If the change color amount is not more than default color value, then get back to step 410 with test constantly change color amount.
Be the safety of guaranteeing to use, present embodiment more provides a security mechanism.Whether the method for present embodiment can utilize optical sensor 240 decision change color amounts greater than a critical value, and critical value is greater than above-mentioned default value.If measured change color amount is greater than this critical value, the dustproof filthy obstruction of filter screen of representative can't use, the running of then forcing to stop projector 100 has been changed new dustproof filter screen 220 up to the user, to prevent the danger of ignoring caused quick-fried lamp of user to relevant warning signal.
In addition, make because of ventilating opening 210 blocks that for reducing projector 100 projector's 100 internal temperatures raising causes the risk of damaging, the method for present embodiment more can be measured projector's 100 temperature inside values, with the index as safety.That is, by C.T. value and one first predetermined temperature value,, too high to inform user projector 100 internal temperatures if measured temperature value, then shows relevant warning signal greater than first predetermined temperature value.Similarly, warn ignoring of signal relevant in order to prevent the user, the method for present embodiment more can compare temperature value and one second predetermined temperature value.Second predetermined temperature value is greater than first predetermined temperature value.If temperature value during greater than second predetermined temperature value, then forces to stop projector's 100 runnings, cool off up to projector.In practical application, optical sensor 240 for example of the present invention can be designed to a device with temperature sensing function, in order to measure the internal temperature values of projector 100, reaches caution user's purpose.
In view of this, embodiments of the invention are by the method for proving installation that filter network state is provided and test filter network state, user mode with the dustproof filter screen of measuring projector, as the foundation of changing dustproof filter screen, prevent that with high accuracy and mode effectively filter screen from causing the danger of quick-fried lamp because of obstruction for the user.
In sum; though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (12)
1. the proving installation of a filter network state, in order to be installed in an electronic equipment, this electronic equipment comprises a ventilating opening and a dustproof filter screen, and this dustproof filter screen is disposed at this ventilating opening, and this device comprises:
One filter network state test pieces is embedded in this dustproof filter screen; And
One optical sensor, a change color amount of this filter network state test pieces of sensing is to determine the state of this dustproof filter screen.
2. proving installation according to claim 1, wherein, this optical sensor emission light beam is to this filter network state test pieces, and reflect a reflected light through this filter network state test pieces, received by this optical sensor, this optical sensor is tried to achieve this change color amount according to this catoptrical RGB composition.
3. proving installation according to claim 1, wherein, this optical sensor is provided with a default color value, and whether this optical sensor is should need change by dustproof filter screen with decision according to this change color amount and the comparative result that should preset color value.
4. proving installation according to claim 3, wherein, whether this optical sensor determines this change color amount greater than this default color value, if then send a relevant warning signal and change to notify a user.
5. projector with filter network state proving installation comprises:
One light source is in order to produce a light beam;
One optical processor produces an image according to this light beam;
One projection lens set, in order to this video imaging to this display surface;
One ventilating opening;
One dustproof filter screen is disposed at this ventilating opening;
One filter network state test pieces is embedded in this dustproof filter screen; And
One optical sensor is measured a change color amount of this filter network state test pieces, to determine the state of this dustproof filter screen.
6. projector according to claim 5, wherein, this optical sensor is launched a light beam to this filter network state test pieces, and reflects a reflected light through this filter network state test pieces, received by this optical sensor, this optical sensor is to try to achieve this change color amount according to this reflected light.
7. projector according to claim 5, wherein, wherein, this optical sensor is provided with a default color value, and whether this optical sensor is should need change by dustproof filter screen with decision according to this change color amount and the comparative result that should preset color value.
8. projector according to claim 7, wherein, whether this optical sensor determines this change color amount greater than this default color value, if then showing is correlated with warns signal to change to notify a user.
9. a method of testing filter network state is used for an electronic installation, and this electronic equipment comprises a ventilating opening and a dustproof filter screen, and this dustproof filter screen is disposed at this ventilating opening, and this method comprises:
Sensing is somebody's turn to do a change color amount of dustproof filter screen; And
According to this change color amount to determine the state of this dustproof filter screen.
10. method according to claim 9 also comprises:
Determine this change color amount whether greater than a default value; And
If this change color amount, then shows relevant warning signal greater than this default color value, if not, then get back to this sensing step.
11. method according to claim 10 also comprises:
Whether determine this change color amount greater than a critical value, wherein, this critical value is greater than this default color value; And
If this change color amount greater than this critical value, then forces to stop this projector's running, if not, then get back to this measuring process.
12. method according to claim 9, wherein, this projector also comprises a filter network state test pieces, is embedded in this dustproof filter screen, and this deciding step comprises:
The emission light beam is to this filter network state test pieces; And
Reception is through a reflected light of this filter network state test pieces reflection, and tries to achieve this change color amount according to this catoptrical RGB composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100042438A CN100504590C (en) | 2006-02-13 | 2006-02-13 | Testing device and method for filter network state and projector possessing the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100042438A CN100504590C (en) | 2006-02-13 | 2006-02-13 | Testing device and method for filter network state and projector possessing the device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021677A true CN101021677A (en) | 2007-08-22 |
| CN100504590C CN100504590C (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100042438A Expired - Fee Related CN100504590C (en) | 2006-02-13 | 2006-02-13 | Testing device and method for filter network state and projector possessing the device |
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| CN (1) | CN100504590C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681311A (en) * | 2011-03-11 | 2012-09-19 | 中强光电股份有限公司 | Control circuit and operation method of projector |
| CN104914652A (en) * | 2015-06-15 | 2015-09-16 | 东信科技（深圳）有限公司 | Device and method for detecting blockage of projector dust screen |
| CN105092475A (en) * | 2015-08-17 | 2015-11-25 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN107044948A (en) * | 2016-10-31 | 2017-08-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted clarifier filter screen life detecting method |
| WO2019184420A1 (en) * | 2018-03-30 | 2019-10-03 | 深圳光峰科技股份有限公司 | Dust control system and projection device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721633B (en) * | 2011-03-31 | 2016-03-23 | 富泰净化科技(昆山)有限公司 | A kind of filter screen tester table |
-
2006
- 2006-02-13 CN CNB2006100042438A patent/CN100504590C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681311A (en) * | 2011-03-11 | 2012-09-19 | 中强光电股份有限公司 | Control circuit and operation method of projector |
| CN102681311B (en) * | 2011-03-11 | 2014-09-03 | 中强光电股份有限公司 | Control circuit and operation method of projector |
| CN104914652A (en) * | 2015-06-15 | 2015-09-16 | 东信科技（深圳）有限公司 | Device and method for detecting blockage of projector dust screen |
| CN105092475A (en) * | 2015-08-17 | 2015-11-25 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN107044948A (en) * | 2016-10-31 | 2017-08-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted clarifier filter screen life detecting method |
| CN107044948B (en) * | 2016-10-31 | 2022-05-20 | 惠州市德赛西威汽车电子股份有限公司 | Service life detection method for vehicle-mounted purifier filter screen |
| WO2019184420A1 (en) * | 2018-03-30 | 2019-10-03 | 深圳光峰科技股份有限公司 | Dust control system and projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100504590C (en) | 2009-06-24 |
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Granted publication date: 20090624 Termination date: 20100213 |