CN102657511A - Visual measuring system having digital sighting target and voice recognition characteristic - Google Patents
Visual measuring system having digital sighting target and voice recognition characteristic Download PDFInfo
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- CN102657511A CN102657511A CN2012101574682A CN201210157468A CN102657511A CN 102657511 A CN102657511 A CN 102657511A CN 2012101574682 A CN2012101574682 A CN 2012101574682A CN 201210157468 A CN201210157468 A CN 201210157468A CN 102657511 A CN102657511 A CN 102657511A
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Abstract
The invention discloses a visual measuring system having digital sighting target and voice recognition characteristics, which is applied to a visual measuring method supported by a multimedia system of a computer. A core technique is that a sighting target display unit, a voice collection unit and a measured data processing unit constitute circular processing procedures of collection, calculation and control and the like about vision test data. Every time, the dimension of five numbers 3, 5, 6, 8 and 9 in stochastic transformation appears on the sighting target display unit. The size of the sighting target is matched with an international vision test standard of a logarithm system. A testee reads the observed digital sighting target according to self-vision; after the voice collection unit sends test data to the multimedia data processing unit for circular processing, a real vision value of a tested person is obtained. The visual measuring system having the digital sighting target and voice recognition characteristics increases the interestingness of a vision test process, simplifies vision measurement procedures, and generates good stimulus response to vision care, with contributions to people for protection on vision health.
Description
Technical field
The invention discloses a kind of vision measurement system and method with digital sighting target and speech recognition features.Its content relates to fields such as international standard vision testing method, Computer Multimedia Technology and Internet of Things application technology.
Background technology
The normal development of human eye is by flat change circle, by short elongated, changes from small to big, and develops into emmetropic process by high hypermetropia.6 years old in the past be the rapid-result phase of vision: the just baby of birth, eyeball mostly is oblate, and is much shorter and smaller than adult eyeball, thereby is in the high hypermetropia state, thus vision very a little less than, only debating, light and shadow move; The birth back is one-year-old, can only distinguish closely bigger object; 1-5 year, the growth of eyeball is fast especially, and volume and anteroposterior diameter all have significant increase and prolongation, and the vision straight line rises; During generally by 6 years old, the volume of eyeball is just near normal sized, and vision is just near normal level.This provides necessary condition for entering a school and being familiar with extraneous things.7-20 year is the plastic phase of vision: the growth of eyeball, and generally to arrive about 20 years old and could finalize the design.Before not finalizing the design, the plasticity of eyeball is very big, thereby has duality, and both incidence and development was myopia easily, and was favourable to the prophylactic treatment myopia again, so prevent bathomorphic various measure, must carry out in this period, just can receive ideal effect.Just be not easy to have changed after the eyeball typing.
Vision is claimed central vision again, the visual function at reflection central fovea of macula place.Vision beyond 5 meters is claimed distant vision, and the vision when 25 centimeters are read is claimed near vision.Want to differentiate two points, must be on retina excited two pyramidal cells, and these two pyramidal cells at least will be by not excited pyramidal cell separately.Macula lutea portion center recess pyramidal cell diameter is 1～1.5 micron.Normal eye's resolving power is 1 ' visual angle, is equivalent to 4.96 microns distances on the retina.Visual acuity chart is exactly around this principle to design.The visual angle is meant that the light of external object two ends reflection intersects the angle that forms through node.Object is big more, and the visual angle is also big more.Object distance is far away more, and then the visual angle is more little.As: (1) 5 member record L:5 member record is to express vision with the logarithm value that deducted the visual angle in 5 minutes, as with equation expression, then is: L=5-lg α; (2) decimal record V: the inverse with the visual angle is expressed vision, and visual angle unit is (') (branch).With equation expression: V=1/ α.Current visual acuity chart figure commonly used has two kinds of C shape and E shapes, and every kind of graphical pen divides 1 ' visual angle into, and every kind of figure contains 5 ' visual angle.
For eyesight exam method, during the inspection distant vision, the inspection distance is 5 meters, and visual acuity chart is placed height should be parallel with person under inspection's eye with 1.0 (or logarithmic visual acuity charts 5.0) row sighting target, and illuminance should be suitable.Testing eyesight generally is the right back left side of elder generation, and two are carried out respectively.Check one at the moment, another available hoodwink spoon hides.Those who are investigated's eyes must be opened wide, can not blink, stravismus or torticollis.From top to bottom refer to sighting target during inspection, as answer and correctly give directions the next line sighting target again.3～5 seconds of the average every word of identification speed.The other vision numerical value of last column sighting target accurately answered in record.If can not see 4.0 sighting targets clearly at 5 meters, then should walk close to gradually to visual acuity chart, the initial distance that can see 4.0 sighting targets clearly is write down, calculate checked vision by (D is the distance that 4.0 sighting target normal eyes should be seen, d is the distance of the quilt person of looking into visual acuity chart).Still do not see 4.0 sighting targets for 1 meter apart from visual acuity chart; Can use the method that identification points instead at the moment and measure vision; By far and closely seeing the exponential distance of hands according to initial, record vision, as near still not seeing the finger number clearly to 5 centimetres then changes whole hands swing before eyes into; With 30 centimetres to 5 centimetres, the distance of hands swing can be seen clearly in record.As can not distinguish that manually then can use up in the darkroom and be projeced on the eyes, can inspection have or not light sensation and judge the light projecting direction.Be the total blindness like the light sensation forfeiture.
At present domestic and international existing vision is tempered appearance or standard vision detection system, the defective that all exists the multiple juvenile's of not being suitable for vision to take exercise.Its weak point is described below:
Though the orientation symbol E that prints on existing eye chart or the table case has a few cover assembled schemes, for each eye chart or table case, the position of orientation symbol E is fixed; Therefore; In continuous vision exercise process, the subject occurs through regular meeting and learnt to heart in the position of the orientation symbol E of whole visual acuity chart, be prone to the situation of dealing with the tester; The effect that vision is taken exercise is not good enough, and can accurately not embody examined person's vision situation.
Current visual acuity chart sighting target figure commonly used has two kinds of E shape and C shapes, but these two kinds of figures are too stiff unavoidably, with digital sighting target relatively because lack interest, be not easy to be accepted by children, be unfavorable for keeping for a long time vision to take exercise.
In recent years; Intellectual Property Right in China office is the report of open relevant " vision exercise system " successively; Wherein patent " mutual acting staring vision-training system and method " (CN101084857) proposed a kind of through software is carried in the computer; The vision workout scheme that the game paddle that use is connected with computer is imported, system's projection on projection screen go out 4-8 each wicket by a game paddle independent operation, and the sighting target in the wicket constantly diminishes under the control of computer.Though this scheme can reach the effect that vision is taken exercise, and can not let those who are investigated understand the eyesight status of oneself at any time.In this scheme, comprise equipment such as computer, scialyscope, projection screen, game paddle, display effect scialyscope preferably costs an arm and a leg, and should not in common family, popularize.And these equipment all adopt wired connection, complex circuit.
Retrieve through internet information; The technology that address the above problem relevant with using " vision measuring method with digital sighting target and speech recognition features " content and the report or the record of method are not found in publication literature search of Intellectual Property Right in China office and library in China collection electronic literature (CNKI) retrieval.
Summary of the invention
The present invention seeks to solve the detection signal that in existing vision testing method, exists fix, stiff and be not easy to multi-medium data process etc. techniques flaw problem.When the person under inspection detects own vision, reach the purpose that vision protection performs physical exercise.The vision measuring method of the multi-medium data processing of a kind of being different from " E " word national standard vision detection is provided for people in daily life.
Vision measurement system with digital sighting target and speech recognition features provided by the invention comprises three functional units: i.e. sighting target display unit, voice collecting unit and Measurement and Data Processing unit.
Sighting target display unit characteristic is after receiving the control signal of sending the Measurement and Data Processing unit, and the performance of application liquid crystal display meets the digital sighting target of international vision examination criteria size.
Be used to show the vision detection signal that meets international vision examination criteria; Detecting digital sighting target signal of taking from the stochastic transformation of 3,5,6,8,9 five numerals of appearance on the sighting target display unit, sighting target size and the international vision examination criteria coupling of the system of logarithm at every turn; The displaying contents of sighting target display unit and process are under the control of multi-medium data processing unit, take place successively with voice collecting unit sighting target identification that receives and the voice signal that phonation unit sends; The sighting target size that the sighting target display unit shows diminishes by the vision examination criteria step by step.
The voice collecting element characteristic is the digital sighting target Chinese pronunciation that the recognition visible sensation tester barks out; To convert digital signal transfers into by voice signal and give the Measurement and Data Processing unit.
Tester and sighting target display unit (liquid crystal display) keep the 5m predetermined distance, post a letter with Chinese and read digital sighting target.Chinese " love " is (eye) as the triggering signal of start-up system, and system gets into the eyesight testing treatment state automatically; The sighting target signal appears in the sighting target display unit; In the eyesight testing process, vision-based detection person reads the Chinese pronunciation of own finding sighting target according to self vision ability with the sound pronunciation form.Voice signal can be connected mike through tone frequency channel wire with system, also can be connected with system through the blue tooth wireless communication device.
The Measurement and Data Processing unit is the vision measurement system with digital sighting target and speech recognition features, it is characterized in that the content of described Measurement and Data Processing cell processing and step comprise:
1st, receive the unitary speech recognition of voice collecting " love " data signal (eye) after, system gets into the surveying work state;
2nd, from the digital sighting target set that 3,5,6,8,9 five number sign indicating numbers are formed, randomly draw one, after showing that big or small control signal is handled, send to the sighting target display unit as sighting target shows signal content;
3rd, receive behind the unitary voice recognition data signal of voice collecting and screen,, then revise and show that big or small control signal diminishes and handle commentaries on classics the 2nd if the result be true with the shows signal that is dealt into the sighting target display unit; If the result is false, then calculates test result and pass to the sighting target display unit;
4th, notify tester's vision testing result, get into waiting state, receive after next tester sends " love " data signal (eye) and change the 2nd.
Advantage of the present invention and beneficial effect
This vision measurement system and method disclosed by the invention with digital sighting target and speech recognition features; Conversion between three kinds of multi-media signals of the visual signal through relevant description tester vision, voice signal, data signal has realized the measuring process of testing eyesight.
1, makes people's simple and direct, the easy and use of vision testing process.
2, the processing procedure of multi-media signal has increased the interest of measuring process, has promoted the intelligent interaction between people and the system, and taking exercise for people's eye hygiene and vision virtually provides a kind of operational approach.
3, the processing procedure of multi-media signal can be to the child's that suffers from infantile autism treatment, the optional Therapeutic Method that a kind of interaction is provided and loosens.
4, solved and need a doctor in traditional vision testing method and bring waste of human resource for those who are investigated give directions on the visual acuity chart service mode of sighting target, people can carry out eyesight measurement and exercise at any time.
5, use this vision testing method, make things convenient for automatic data collection, storage, processing and the transmission of information system.
Description of drawings
The man machine interface of the vision measurement system of Fig. 1 digital sighting target and speech recognition features for the present invention has.
Fig. 2 is the vision measurement system and the method sketch map of digital sighting target and speech recognition features.
Among the figure, 1. sighting target display unit, 2. tester, 3. voice collecting unit, 4. Measurement and Data Processing unit.
The specific embodiment
This vision measurement system and method with digital sighting target and speech recognition features, its hardware platform is made up of sighting target display unit, audio collection unit, detection data processing unit.Detecting data processing unit is connected with the sighting target display unit through video port, video line.The sighting target display unit can be one and be used for showing that the LCD TV of digital sighting target signal replaces.The audio collection unit is through the audio collection mouth joint detection data processing unit of tone frequency channel wire, computer.Keep the 5m predetermined distance between detected person and the sighting target display unit (LCD TV), post a letter with Chinese and read digital sighting target.This vision measurement system interface with digital sighting target and speech recognition features disclosed by the invention is as shown in Figure 1.
Sighting target display unit, detected person, voice collecting unit and Measurement and Data Processing unit constitute closed loop datacycle processing system (seeing accompanying drawing 2); Randomly drawing of the examination of one cover sighting target processing method of data realization sighting target data value and the control of sighting target high low signal, data centralization (3,5,6,8,9), and system wait, operation and output processing procedure.Its logical algorithm is described as follows:
Comparison is screened at the sighting target voice signal of sighting target shows signal and collection in the Measurement and Data Processing unit, through after the circular treatment, obtains and export vision tester's vision testing result automatically.The automatic redirect of system is got back to original state and is waited for, triggers sound " love " (eye) until obtain system start-up, detects again.
Vision detect the datacycle processing logic be when the logical value of screening the result continuous three times correct, current sighting target size level control signal adds 1 (being that sighting target reduces), continues to detect.When continuous three mistakes of logical value of screening the result, vision detects and finishes, and the output current sequence number subtracts the vision true value after 1.When if current sequence number has been smallest sequence number, export minimum vision true value.If current when being maximum sequence number, vision detects and finishes, and exports maximum vision true value.
Claims (4)
1. vision measurement system with digital sighting target and speech recognition features is characterized in that this method comprises three functional units: i.e. sighting target display unit, voice collecting unit and Measurement and Data Processing unit.
2. the vision measurement system with digital sighting target and speech recognition features according to claim 1; It is characterized in that described sighting target display unit is after receiving the control signal of sending the Measurement and Data Processing unit, the performance of application liquid crystal display meets the digital sighting target of international vision examination criteria size.
3. the vision measurement system with digital sighting target and speech recognition features according to claim 1; It is characterized in that described voice collecting unit is the digital sighting target Chinese pronunciation that the recognition visible sensation tester barks out, and will convert digital signal transfers into by voice signal and give the Measurement and Data Processing unit.
4. the vision measurement system with digital sighting target and speech recognition features according to claim 1 is characterized in that the content of described Measurement and Data Processing cell processing and step comprise:
1st, receive the unitary speech recognition of voice collecting " love " data signal (eye) after, system gets into the surveying work state;
2nd, from the digital sighting target set that 3,5,6,8,9 five number sign indicating numbers are formed, randomly draw one, after showing that big or small control signal is handled, send to the sighting target display unit as sighting target shows signal content;
3rd, receive behind the unitary voice recognition data signal of voice collecting and screen,, then revise and show that big or small control signal diminishes and handle commentaries on classics the 2nd if the result be true with the shows signal that is dealt into the sighting target display unit; If the result is false, then calculates test result and pass to the sighting target display unit;
4th, notify tester's vision testing result, get into waiting state, receive after next tester sends " love " data signal (eye) and change the 2nd.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104639643A (en) * | 2015-02-11 | 2015-05-20 | 北京市眼科研究所 | Comprehensive vision self-service detection method based on Internet video terminal |
| CN110338747A (en) * | 2019-06-13 | 2019-10-18 | 宁波明星科技发展有限公司 | Householder method, storage medium, intelligent terminal and the auxiliary device of eye test |
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| CN1883376A (en) * | 2006-06-19 | 2006-12-27 | 陈宁宁 | Self-testing eye chart with speech instruction |
| CN101744602A (en) * | 2008-11-28 | 2010-06-23 | 英业达股份有限公司 | Vision look-up method and hand-holding communication device applied to the vision measuring method |
| CN102078180A (en) * | 2009-11-26 | 2011-06-01 | 英业达股份有限公司 | Handheld electronic equipment with vision detection function and detection method thereof |
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Patent Citations (5)
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| CN1775167A (en) * | 2004-11-15 | 2006-05-24 | 乐金电子(中国)研究开发中心有限公司 | Portable terminal capable of detecting vision and detecting method |
| CN1883376A (en) * | 2006-06-19 | 2006-12-27 | 陈宁宁 | Self-testing eye chart with speech instruction |
| CN101744602A (en) * | 2008-11-28 | 2010-06-23 | 英业达股份有限公司 | Vision look-up method and hand-holding communication device applied to the vision measuring method |
| CN102078180A (en) * | 2009-11-26 | 2011-06-01 | 英业达股份有限公司 | Handheld electronic equipment with vision detection function and detection method thereof |
| KR20110085074A (en) * | 2010-01-19 | 2011-07-27 | 도로교통공단 | Test machine for eyesight |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104639643A (en) * | 2015-02-11 | 2015-05-20 | 北京市眼科研究所 | Comprehensive vision self-service detection method based on Internet video terminal |
| CN110338747A (en) * | 2019-06-13 | 2019-10-18 | 宁波明星科技发展有限公司 | Householder method, storage medium, intelligent terminal and the auxiliary device of eye test |
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Application publication date: 20120912 |