CN1738377A - Method and device for monitoring TV set watching distance - Google Patents
Method and device for monitoring TV set watching distance Download PDFInfo
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- CN1738377A CN1738377A CNA2005100212699A CN200510021269A CN1738377A CN 1738377 A CN1738377 A CN 1738377A CN A2005100212699 A CNA2005100212699 A CN A2005100212699A CN 200510021269 A CN200510021269 A CN 200510021269A CN 1738377 A CN1738377 A CN 1738377A
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Abstract
The invention discloses a method for detecting the viewing distance of TV and its device, relating to the TV technique. The invention can detect the distance between the human body and the TV , present distance alarm intelligently, and control the relative parameters of TV, to reach the purposes of protecting the sight of human and controlling the viewing distance. The invention comprises following steps: (1) detecting if the human body enters into the alarm range, if there be, going to the step (2), or else, continuing detecting; (2), starting the judging program, if following judging conditions are met as: detecting the distance between the human body and the TV and the detected result is less than the alarm distance, going to the step (3); (3), starting the alarm program. The advantages of said invention comprise: the accuracy that the TV actively recognize the human and the precision of detecting the distance between human and TV are improved, while the invention can protect the health of user with personalized operation.
Description
Technical field
The present invention relates to television technologies, particularly the technology of control TV set watching distance.
Background technology
The operation principle of CRT television set is the result of electronic scanning, in view of the electron gun of the color monitor cathode ray tube of CRT, and need be under the high pressure effect of 30KV, with electron stream directive phosphor screen.Electronics shooting rapidly under the high pressure effect, impact fluroescence screen, thus electromagnetic radiation produced, and main component is X ray and light radiation; And CRT horizontal deflection system, solenoid, electromagnetic transformers and other electronic circuits are in the course of the work, then produce radio-frequency radiation, i.e. the electromagnetic radiation of narrow sense.Coming into operation in a large number of color television set, and frequency of utilization and time increase significantly, about the electromagnetic radiation of CRT to health effects and harm, point out in " WHO.Visual DisplayTerminals and Worker's Health; Geneva:WHO Offset Publication " publication that The World Health Organization (WHO) delivered as far back as 1987: CRT and surrounding space thereof have electromagnetic radiation in its course of work, comprise X ray, ultraviolet ray, visible light, infrared ray and radio-frequency radiation, and think that there is potential danger in the electromagnetic radiation of CRT to human body.
Present popularizing owing to television set, increasing people is chosen in leisure time and watches TV programme, particularly teenager and children, everybody indulges television program very much and does not have self-control, do not note very much again when seeing TV posture and with the distance of television set, the result sees that TV is more and more nearer, has caused myopia; Children are after LEARNING TO WALK in addition, also like seeing television set, though abundant TV programme can improve their intelligence development, but see that closely TV returns the eyesight that influences them and grows, simultaneously because they and thoughtless and can not correctly judge, therefore from the little bad habit of closely seeing TV of just having formed.
Television set in the past is for the needs on the advertising, the healthy interaction platform of television set is proposed, main method is to adopt to set several groups of brightness/contrast/colourity empirical values in program, allows the user according to initiatively selecting to control the method for television set with the distance of television set.In fact these methods can not be controlled according to the actual conditions that the user watches for children, also can't realize controlling the distance of watching TV.
Summary of the invention
Technical problem to be solved by this invention is, a kind of distance range that can measure human body and television set is provided, and can provide distance intelligently and warn and control the television set relevant parameter, reaches protection people's the eyesight and the method and apparatus of control watching distance.
The technical scheme that the present invention solve the technical problem employing is that the monitoring TV set watching distance method may further comprise the steps:
1) whether detection has human body to enter the caution scope, if having, enters step 2), if do not have, continue to detect;
2) start decision procedure, if satisfy the distance that following all decision conditions: a. measures human body and television set, measurement result is less than the caution distance; Then enter step 3);
3) start the caution program.
Described step 2) decision condition in also has: b. measures human motion speed, and measurement result is not actionless that is: for motion; And the time that this movement human is positioned within the caution distance surpasses the default time limit.
Caution program in the described step 3) is: television set shows the caution statement.Perhaps, the caution program in the described step 3) is: the brightness or the contrast that reduce television image gradually.Perhaps, the caution program in the described step 3) is: television set enters holding state.
The present invention also provides a kind of monitoring TV set watching distance device, comprising: first sensing unit, human body signal in the caution scope; Second sensing unit, human body is to the distance of television set; Processing unit is according to the testing result control television image of first sensing unit or second sensing unit.
Described first sensing unit also will detect the human motion speed in the caution scope.Described first sensing unit is a PIR passive pyroelectric Infrared Detectors, and described second transducer is the active range sensor of PSD.Described first sensing unit is at least one PIR passive pyroelectric Infrared Detectors, is distributed in the television set front panel.Second sensing unit also comprises transfer, is used to adjust the direction of sensor probe.
The invention has the beneficial effects as follows, improved the accuracy that television set is initiatively discerned people's accuracy and measured man-machine distance, can effectively protect user's health, and in operation the more personalized characteristics.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the block diagram of embodiments of the invention.
Fig. 2 is the pir sensor schematic diagram that the present invention adopts.
Fig. 3 is the PSD transducer schematic diagram that the present invention adopts.
Fig. 4 is a decoder module workflow diagram of the present invention.
Fig. 5 is a display module workflow diagram of the present invention.
Fig. 6 is the transducer of the present invention installation site schematic diagram of plate in front.
Embodiment
The present invention has constant body temperature according to human body, generally at 37 degree, so can send the infrared ray about specific wavelength 10UM, can measure the method that has or not personnel in the preceding certain limit of television set with infrared ray sensor, set the control television set by user oneself judgement before having taken on a new look fully.Specific practice: infrared ray sensor (this scope is the minimum range of television screen Diagonal Dimension in theory and angular distance) in the certain distance scope receives the infrared radiation of human body, can produce an alarm voltage signal.The MCU of television set judges that according to this voltage signal human body enters the improper scope of watching, MCU detects 30 seconds～60 seconds (can set), and after the judgement that adds up, on television set, show the caution statement, as " please noting distance " or the like with television set, and progressively reduce the brightness/contrast of television set, until not having image fully or entering holding state.After human body distance goes beyond the scope, recover normal condition automatically after also totally detecting a period of time.Reach protection people's eyesight by such control, and guarantee the best machine that televiews distance.This function can the user be set or is locked binding with the child.
Specifically, monitoring TV set watching distance method of the present invention may further comprise the steps:
1) whether detection has human body to enter the caution scope, if having, enters step 2), if do not have, continue to detect;
2) start decision procedure, if satisfy following all decision conditions:
A. measure the distance of human body and television set, measurement result is less than the caution distance;
B. measure human motion speed, measurement result is not actionless that is: for motion; And the time that this movement human is positioned within the caution distance surpasses the default time limit.
Then enter step 3):
3) start the caution program: reduce the brightness or the contrast of television image gradually, disappear up to image, or enter holding state, perhaps on screen, show the caution statement.
The present invention adopts two-stage to judge that the first order has judged whether that human body enters the caution scope, and described caution scope is meant and is unfavorable for healthy, the near excessively scope of watching, in the first order is judged, only carries out rough judgement; Whether the human body distance is judged in the second level, and static, movement velocity, can also comprise the direction of motion.
The first order is judged the passive infrared transducer of employing, and the present invention is called " first sensing device ", and the infrared radiation that receives human body in the certain distance scope can produce an alarm voltage signal with mobile.According to predefined apart from voltage threshold, and waveform speed (corresponding to human motion speed), the MCU of television set judges that according to this voltage signal human body enters the improper scope of watching.This thresholding need be got rid of according to some actual conditions.Since have the dead angle of judgement and wrong report, for example insensitive perpendicular to walking about of transducer, can adopt two of arrangements or three transducers to carry out comprehensively replenishing judging.
After first order judgement has personnel to enter the judgement scope, carry out partial range estimation.Use the PSD transducer, can make comparatively accurate range measurement, so that MCU controls.Since the speed of PSD transducer sensing moving object accurately, but can not judge whether this object is human body as infrared sensor, and therefore, in the present embodiment, the PSD transducer thinks that the object of motion is a human body, and static object is not reacted.
The MCU of television set needs AD access port or outside AD device to carry out data sampling, and a kind of is inner AD passage, and another uses outside AD device.The AD switching rate requires to get final product in the millisecond magnitude.For adopting a plurality of transducers to need an external channel diverter switch.
By setting detection-phase, can realize the accuracy of progressively reporting to the police in the program.Follow the tracks of the judgement stage rough, the MCU of television set adopts time-sharing polling mechanism, each passage timing sampling is detected the record sampled value.According to the voltage threshold of setting, when surpassing thresholding, MCU trace analysis voltage waveform, wave recording amplitude and slope are provided with corresponding sign, enter accurate measuring phases simultaneously.
In the accurate tracking measuring phases, the number of times of the record human body motion detection that adds up, after MCU judged according to 30 seconds～300 seconds reaction time of user's setting, on television set, show the caution statement, as " please noting distance " " distance is too near; shutdown after 15 seconds " or the like, and progressively reduce the brightness/contrast of television set, until not having image fully or entering holding state with television set.After the human body distance goes beyond the scope, also totally detect a period of time (5～30 seconds) back and recover start and normal condition automatically.Reach the machine that the televiews distance (this distance is the minimum range of television screen Diagonal Dimension and angular distance in theory) that guarantees people's the best by such control, also protect people's eyesight simultaneously.If the active range sensor of PSD has been installed, after elementary scope is judged, can initiatively judge the distance of human body before television set.
The present invention adopts a plurality of transducers to be installed on different positions and angle, and MCU detects judgement.In order accurately to judge the distance range and the translational speed of human body, prevent to judge the dead angle, use a plurality of transducers, at the different direction of motion of human body and the reflection of angle, about PIR is installed adopts laterally, perhaps upper and lower sides to.The signal of comprehensive each transducer of MCU is judged.For the active range sensor of PSD, can increase the mechanical rotation device of 180 degree scopes, rotate control and finish by the MCU module.The concrete structure of this type of tumbler belongs to prior art, for example, application is arranged promptly in the camera of security monitoring, therefore, repeats no more herein.
Owing to adopt the passive pyroelectric infrared sensor of PIR, detection be a general distance range, and need be insensitive to actionless human body.For different people, different ambient temperatures, different distances, different motion direction and speed directly have influence on the sensitivity of transducer.The active range sensor of PSD, distance range is nearer, and is also restricted for the angle and direction of human body.Therefore design a kind of can learning records set apart from proper motion the time signal waveform, and the detection that relies on the PSD transducer is as the condition of judging distance, to improve the precision that detects.As shown in Figure 5.
The auxiliary judgement condition: because the people watches TV can use Infrared remote controller,, also do respective record to effective key of Infrared remote controller, and as a criterion that has or not personnel.
By the enforcement of above technical scheme, the invention has the beneficial effects as follows and improved the accuracy that television set is initiatively discerned people's accuracy and measured man-machine distance, increase new functional characteristics, and on operating the more personalized characteristics.
Fig. 1 is a tv block diagram, by tuner 1, and audio frequency and video switching matrix switch 2, audio handles 3, and audio frequency amplifies 4, loud speaker 5, the row field separates 6, and vision signal handles 7, a row driving 8, CRT monitor 9, MCU10, IR11, transducer 12, transducer 13.MCU module 10 is cores of former system for TV set in Fig. 1, and most of MCU contain variable connector and AD converter in inside, if not then need corresponding external devices to form AD converter and Port Multiplier, as shown in Figure 4.Transducer 12,13 inserts the AD converter part of MCU10, becomes the peripheral hardware of MCU.IR (infrared remote receiver) 11 and button are connected on the MCU10, MCU10 is by I2C bus interface and general GPIO, other parts of control connection system for TV set are (as tuner 1, audio frequency and video switching matrix switch 2, audio handles 3, and audio frequency amplifies 4, loud speaker 5, the row field separates 6, and vision signal handles 7, a row driving 8).
In Fig. 2 detail display the internal structure block diagram of PIR module.By Fresnel Lenses 101, PID transducer 100, matched impedance 102, amplifier 103 and output stage 104 are formed.The PIR module is output as a voltage that has comprised the speed that detects, variation etc.
In Fig. 3 detail display the interior block diagram of PSD module.Form by infrared transmitter 201 and infrared remote receiver 200, signal processing circuit 203, led drive circuit 202, voltage stabilizing circuit 204, crystal oscillating circuit 205, output circuit 206.The voltage signal of output becomes certain relation with the distance of object.
Fig. 4 describes the software flow of complete machine work.Behind the power-up initializing, from EEPROM, read information, judge whether standby afterwards, if not, then carry out the processing of television set running parameter, comprise that signaling mode is judged, AFT judges tuning processing, key is handled, enter working procedure of the present invention afterwards, handle the data that each transducer is sent here, OSD shows and IC refreshes.
Fig. 5 is for describing the software flow of sensor judgment processing.
Fig. 6 is transducer scheme of installation of the present invention.Pir sensor is installed on the left and right sides of front panel, and the PAD transducer is installed on the top of panel.
Claims (10)
1, monitoring TV set watching distance method may further comprise the steps:
1) whether detection has human body to enter the caution scope, if having, enters step 2), if do not have, continue to detect;
2) start decision procedure, if satisfy following all decision conditions:
A. measure the distance of human body and television set, measurement result is less than the caution distance;
Then enter step 3):
3) start the caution program.
2, monitoring TV set watching distance method as claimed in claim 1 is characterized in that, described step 2) in decision condition also have:
B. measure human motion speed, the result is motion, and the time that this movement human is positioned within the caution distance surpasses the default time limit.
3, monitoring TV set watching distance method as claimed in claim 1 is characterized in that, the caution program in the described step 3) is: television set shows the caution statement.
4, monitoring TV set watching distance method as claimed in claim 1 is characterized in that, the caution program in the described step 3) is: the brightness or the contrast that reduce television image gradually.
5, monitoring TV set watching distance method as claimed in claim 1 is characterized in that, the caution program in the described step 3) is: television set enters holding state.
6, monitoring TV set watching distance device comprises:
First sensing unit, human body signal in the caution scope;
Second sensing unit, human body is to the distance of television set;
Processing unit is according to the testing result control television image of first sensing unit or second sensing unit.
7, monitoring TV set watching distance device as claimed in claim 6 is characterized in that, described second sensing unit also will detect the human motion speed in the caution scope.
8, monitoring TV set watching distance device as claimed in claim 6 is characterized in that, described first sensing unit is a PIR passive pyroelectric Infrared Detectors, and described second transducer is the active range sensor of PSD.
9, monitoring TV set watching distance device as claimed in claim 6 is characterized in that, described first sensing unit is at least one PIR passive pyroelectric Infrared Detectors, is distributed in the television set front panel.
10, monitoring TV set watching distance device as claimed in claim 6 is characterized in that:
Second sensing unit also comprises transfer, is used to adjust the direction of sensor probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100212699A CN100388766C (en) | 2005-07-15 | 2005-07-15 | Method and device for monitoring TV set watching distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100212699A CN100388766C (en) | 2005-07-15 | 2005-07-15 | Method and device for monitoring TV set watching distance |
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| Publication Number | Publication Date |
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| CN1738377A true CN1738377A (en) | 2006-02-22 |
| CN100388766C CN100388766C (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100212699A Expired - Fee Related CN100388766C (en) | 2005-07-15 | 2005-07-15 | Method and device for monitoring TV set watching distance |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853390A (en) * | 2008-12-29 | 2010-10-06 | 谢爱国 | Method and apparatus for media viewer health care |
| CN101977114A (en) * | 2010-11-18 | 2011-02-16 | 华为终端有限公司 | Electronic equipment, user protection device and method |
| CN102141623A (en) * | 2010-01-28 | 2011-08-03 | 康佳集团股份有限公司 | Remote controller and distance reminding method thereof |
| CN102186027A (en) * | 2011-04-22 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Eyestrain preventing television and method |
| CN102214414A (en) * | 2010-04-07 | 2011-10-12 | 建碁股份有限公司 | Advertisement system and advertisement playing method |
| TWI399526B (en) * | 2009-09-30 | 2013-06-21 | Kye Systems Corp | Computer peripherals with distance warnings and their distance warning methods |
| CN103177704A (en) * | 2011-12-23 | 2013-06-26 | 英顺源（上海）科技有限公司 | Device and method for adjusting displaying definition according using state |
| CN103188463A (en) * | 2011-12-31 | 2013-07-03 | 青岛海尔软件有限公司 | Television anti-myopia warning system with ultrasonic distance measurement and warning method |
| CN102117575B (en) * | 2009-12-30 | 2014-07-09 | 鸿富锦精密工业（深圳）有限公司 | Display |
| CN104269018A (en) * | 2013-05-10 | 2015-01-07 | 无锡北斗星通信息科技有限公司 | Multifunctional monitoring system of television |
| CN105872716A (en) * | 2016-06-08 | 2016-08-17 | 合肥联宝信息技术有限公司 | Display equipment and display control method thereof |
| CN108901108A (en) * | 2018-07-06 | 2018-11-27 | 北京小米移动软件有限公司 | The control method and device of lighting apparatus, lighting apparatus |
| CN108932062A (en) * | 2017-05-28 | 2018-12-04 | 姚震 | The control method of electronic equipment, input unit |
| CN110133674A (en) * | 2019-05-27 | 2019-08-16 | 四川长虹电器股份有限公司 | A kind of battery cell online tester based on TOF |
Family Cites Families (2)
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|---|---|---|---|---|
| CN2168372Y (en) * | 1993-08-09 | 1994-06-08 | 中山市小榄镇信达电子厂 | Vision protector |
| CN2610422Y (en) * | 2003-03-25 | 2004-04-07 | 欧阳和 | Children vision protector for controlling TV. by sensing of range of visibility |
-
2005
- 2005-07-15 CN CNB2005100212699A patent/CN100388766C/en not_active Expired - Fee Related
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| CN101853390B (en) * | 2008-12-29 | 2014-12-17 | 谢爱国 | Method and apparatus for media viewer health care |
| CN101853390A (en) * | 2008-12-29 | 2010-10-06 | 谢爱国 | Method and apparatus for media viewer health care |
| TWI399526B (en) * | 2009-09-30 | 2013-06-21 | Kye Systems Corp | Computer peripherals with distance warnings and their distance warning methods |
| CN102117575B (en) * | 2009-12-30 | 2014-07-09 | 鸿富锦精密工业（深圳）有限公司 | Display |
| CN102141623A (en) * | 2010-01-28 | 2011-08-03 | 康佳集团股份有限公司 | Remote controller and distance reminding method thereof |
| CN102214414A (en) * | 2010-04-07 | 2011-10-12 | 建碁股份有限公司 | Advertisement system and advertisement playing method |
| CN101977114A (en) * | 2010-11-18 | 2011-02-16 | 华为终端有限公司 | Electronic equipment, user protection device and method |
| CN101977114B (en) * | 2010-11-18 | 2012-06-27 | 华为终端有限公司 | Electronic equipment, user protection device and method |
| CN102186027A (en) * | 2011-04-22 | 2011-09-14 | 深圳创维－Rgb电子有限公司 | Eyestrain preventing television and method |
| CN103177704A (en) * | 2011-12-23 | 2013-06-26 | 英顺源（上海）科技有限公司 | Device and method for adjusting displaying definition according using state |
| CN103188463A (en) * | 2011-12-31 | 2013-07-03 | 青岛海尔软件有限公司 | Television anti-myopia warning system with ultrasonic distance measurement and warning method |
| CN104269018A (en) * | 2013-05-10 | 2015-01-07 | 无锡北斗星通信息科技有限公司 | Multifunctional monitoring system of television |
| CN105872716A (en) * | 2016-06-08 | 2016-08-17 | 合肥联宝信息技术有限公司 | Display equipment and display control method thereof |
| CN108932062A (en) * | 2017-05-28 | 2018-12-04 | 姚震 | The control method of electronic equipment, input unit |
| CN108932062B (en) * | 2017-05-28 | 2021-09-21 | 姚震 | Electronic device, input device control method |
| CN108901108A (en) * | 2018-07-06 | 2018-11-27 | 北京小米移动软件有限公司 | The control method and device of lighting apparatus, lighting apparatus |
| CN110133674A (en) * | 2019-05-27 | 2019-08-16 | 四川长虹电器股份有限公司 | A kind of battery cell online tester based on TOF |
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