CN104460363A - Automatic shut-down method for display device and display device adopting method - Google Patents
Automatic shut-down method for display device and display device adopting method Download PDFInfo
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- CN104460363A CN104460363A CN201410539724.3A CN201410539724A CN104460363A CN 104460363 A CN104460363 A CN 104460363A CN 201410539724 A CN201410539724 A CN 201410539724A CN 104460363 A CN104460363 A CN 104460363A
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- display device
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
The invention provides an automatic shut-down method for a display device. The method includes the following steps that S1, multiple infrared frequency spectrum signals of different frequencies are radiated by detecting a user of the display device; S2, the infrared frequency spectrum signals are converted into multiple electric signals, and a temperature value corresponding to each electric signal is acquired through calculation according to the electric signals; S3, the total radiant energy value T of a region corresponding to the display device is acquired according to the temperature values acquired through calculation and corresponding to the electric signals; S4, after preset time passes, the step 1 to the step 3 are repeated, and multiple total radiant energy values T1 to Tn are acquired, wherein n is a positive integer; S5, the variation trend of the total radiant energy values T1 to Tn is analyzed, if the variation trend of the total radiant energy values T1 to Tn is a preset descent trend, it is judged that the user is in a sleep state, and the display device executes automatic shut-down operation; if the variation trend of the total radiant energy values T1 to Tn is not the preset descent trend, the step 1 is re-executed. By the adoption of the method, by detecting the variation of infrared frequency spectrum energy emitted by the user, whether the user is in the sleep state or not is judged, and therefore automatic shut-down operation is executed.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of automatic shutdown method of display device and use the display device of the method.
Background technology
Along with the electronic installation such as display device such as TV and computer screen extensively enters daily life, display device with function more and more diversified to meet the different demand of user.Timing shutdown is to meet user upon entering the sleep state, and display device still then can shut down a function of saving electric energy.But timing shutdown function, as a non intelligent application, as quarter-bell, can only be carried out according to fixing pattern, can not be changed with the change of objective condition.User, when setting timing shutdown, can only estimate according to the work and rest situation of oneself, cannot judge accurately when to shut down proper, can only select the time that one more late.After having set timing shutdown, if user falls asleep in advance, so display device also can work on, until the schedule time, like this, will cause the waste of a large amount of electric energy.In addition, because the sound of display device and image can not stop because of the sleep of user, the pollution source of sound and light can be produced, affect the ortho of user, damage healthy.
Ultrared wavelength between 0.76 ~ 100 μm, by the scope of wavelength can be divided near infrared, in infrared, far infrared, extra-far infrared four class, its position in electromagnetic wave continuous frequency spectrum is the region be between radiowave and visible ray.Infrared radiation is the one electromagenetic wave radiation the most widely that occurring in nature exists, it is molecule and the random motion of atom that under conventional environment, all can produce self based on any object, do not stop eradiation and go out thermal infrared energy, the motion of molecule and atom is more violent, the energy of radiation is larger, otherwise the energy of radiation is less.The object of temperature more than absolute zero, all can give off infrared ray because of the molecular motion of self.After converting the power signal of object radiation to electric signal by pyroscan, through control treatment, just can realize carrying out remote temperature measurement to target and carry out analysis judging.
At present, only have and utilize infrared ray sensor induction display device front whether to have user to control the method for shutting down, do not utilize pyroscan to detect user and whether be in sleep state with the control method of automatic shutdown.Therefore, be necessary to develop a kind of utilize pyroscan to detect when whether user is in sleep state can the control method of automatic shutdown, to overcome the problems referred to above, energy-conserving and environment-protective ensure that user's is healthy simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of automatic shutdown method of display device and use the display device of the method, utilize and detect the change that user sends infra-red spectral energy, by Algorithm Analysis, judge whether user is in sleep state, thus perform automatic shutdown operation, energy-conserving and environment-protective.
According to an aspect of the present invention, a kind of automatic shutdown method of display device is provided, comprises the following steps:
S1. the user of detection display equipment gives off multiple infrared spectrum signals of different frequency;
S2. described multiple infrared spectrum signal is converted to multiple electric signal, calculates temperature value corresponding to each electric signal respectively according to described multiple electric signal;
S3. corresponding according to each electric signal calculated temperature value obtains the integrated radiant emittance value T with display device corresponding region;
S4., after the schedule time of interval, repeat step S1 to S3, obtain multiple integrated radiant emittance value T1 ~ Tn, wherein, n is positive integer;
S5. analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, display device performs automatic shutdown operation; If the non-default downtrending of variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, then return step S1.
Further, in described step S3, concrete, adopt the weighting coefficient temperature value corresponding to each electric signal to be weighted, thus obtain the integrated radiant emittance value T with display device corresponding region.
Further, in described step S5, concrete, described display device if occur significantly fluctuating for more than twice in the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, judges that user is not in sleep state before performing automatic shutdown operation.
Further, in described step S5, concrete, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn1 is in continuous decrease trend or does not have continuous fluctuation, display device enters pre-shutdown mode, wherein, and n1<n.
Further, described pre-shutdown mode comprises: the display brightness of display device is adjusted to 50% of original brightness, and volume is adjusted to 50% of original volume.
Further, in described step S5, after display device enters pre-shutdown mode, if the variation tendency of described multiple integrated radiant emittance value Tn1 ~ Tn is in continuous decrease trend or in moderate tone, and be no more than the fluctuation by a small margin of twice, judge that user is in sleep state, display device performs automatic shutdown operation.
Further, in described step S1, described multiple infrared spectrum signal is the infrared spectrum signal of the multiple different parts of user as analyzing spot.
Further, in described step S2, concrete, described electric signal is voltage signal V.
Further, in described step S2, concrete, adopt formula (1) to calculate temperature value corresponding to each electric signal: T=39.949+ (-0.00926) × V (1)
According to a further aspect in the invention, provide a kind of display device, described display device uses said method to perform automatic shutdown operation, specifically comprises:
Sleep detection module, the user for detection display equipment gives off multiple infrared spectrum signals of different frequency;
Sleep judge module, for carrying out translation operation to described multiple infrared spectrum signal, obtain the integrated radiant emittance value T1 ~ Tn of described display device corresponding region, wherein, n is positive integer; And analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, send user and be in dormant judged result;
Shutdown processing module, for being in dormant judged result according to receiving described user, has sent shutdown command or standby command to display device.
According to the automatic shutdown method of display device provided by the invention and the display device of use the method, utilize and detect the change that user sends infra-red spectral energy, pass through Algorithm Analysis, judge whether user is in sleep state, if judge that user is in sleep state, thus perform automatic shutdown operation, automatically close display device, energy-conserving and environment-protective, for user provides conveniently.
Accompanying drawing explanation
By the description to embodiment carried out below in conjunction with accompanying drawing, above-mentioned and/or other object of the present invention and advantage will become apparent, wherein:
Fig. 1 illustrates the process flow diagram of the automatic shutdown method of the display device provided according to an exemplary embodiment of the present;
Fig. 2 illustrates that the automatic shutdown method of the display device provided according to an exemplary embodiment of the present judges that user is not in dormant analysis chart;
Fig. 3 illustrates that the automatic shutdown method of the display device provided according to an exemplary embodiment of the present judges that user is in dormant analysis chart;
Fig. 4 illustrates the structural representation of the display device provided according to an exemplary embodiment of the present.
Embodiment
Now will in detail with reference to embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein, identical label refers to identical parts all the time.Below by referring to accompanying drawing, described embodiment will be described, to explain the present invention.
Fig. 1 illustrates the process flow diagram of the automatic shutdown method of the display device provided according to an exemplary embodiment of the present.As shown in Figure 1, at a kind of according to an exemplary embodiment of the present invention automatic shutdown method of display device, comprise the following steps:
S1. the user of detection display equipment gives off multiple infrared spectrum signals of different frequency;
S2. described multiple infrared spectrum signal is converted to multiple electric signal, calculates temperature value corresponding to each electric signal respectively according to described multiple electric signal;
S3. corresponding according to each electric signal calculated temperature value obtains the integrated radiant emittance value T with display device corresponding region;
S4., after the schedule time of interval, repeat step S1 to S3, obtain multiple integrated radiant emittance value T1 ~ Tn, wherein, n is positive integer;
S5. analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, display device performs automatic shutdown operation; If the non-default downtrending of variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, then return step S1.
In described step S1, described multiple infrared spectrum signal is the infrared spectrum signal of the multiple different parts of user as analyzing spot.
Preferably, in described step S2, described electric signal is voltage signal V, and adopts formula (1) to calculate temperature value corresponding to each electric signal: T=39.949+ (-0.00926) × V (1)
Preferably, in described step S3, adopt the weighting coefficient temperature value corresponding to each electric signal to be weighted, thus obtain the integrated radiant emittance value T with display device corresponding region.
In specific implementation, the display device such as TV and computer screen installs infrared remote receiver additional, the corresponding receiving area of infrared remote receiver is locked in the corresponding region in display device front, as in general user family, televisor dead ahead is long strip type sofa normally, and user is sitting on sofa or is recumbent on a sofa and sees TV.TV carries out infrared receiver to the region covering sofa.
Concrete, infrared remote receiver can adopt infrared displacement sensor up-to-date at present, its special indoor design makes the power of self lower, very little to the ambient temperature effect measured, and the data of uniqueness amplify precision and accuracy that denoising part can improve data further, can reach the sensitivity of 9.26 × 10-5 DEG C/mV.
Infrared remote receiver inside is by using the organic glass of particular thermal expansion coefficient, when specific region is scanned, the infrared ray received can cause the thermal expansion of the inner organic glass of receiver, make between organic glass and infrared displacement sensor, to produce relative position change, thus change the capture area of infrared receiving tube, thus displacement transducer output voltage is also changed thereupon, produce corresponding electric signal.Then the master chip sent on illustrious equipment mainboard processes.Due to the temperature that body surface is different, can give off the infrared ray of different frequency, the infrared ray of different frequency, after infrared remote receiver process, can produce different electric signal again, so different electric signal, just can represent the temperature of different analyzing spots.Master chip calculates into corresponding temperature value to the electric signal received according to formula (1) T=39.949+ (-0.00926) × V.
Catch scanning because infrared remote receiver carries out single to specific region, actual being equivalent to, gathers a two field picture, therefore can generate quantitative data, as can be generated Y data-signal altogether to scanning area.The number of data points y of corresponding different temperatures is just contained in these data.Master chip is according to after formula (1) T=39.949+ (-0.00926) × V temperature spot data, and the classification referring again to table 1 is classified, and is then weighted according to weighting coefficient, obtains a region integrated radiant emittance value T.
Because have employed the calculating that weighting coefficient carries out, so this energy value fict infrared energy value.The effect of weighting coefficient, is to amplify the data of sensitizing range, and generally processes the data in insensitive region.As body surface temperature variation is different, four limbs shell temperature is relatively lower, and the change of the spot temperature such as head, neck changes closer to auxillary temperature.The temperature variation in these regions more can reflect metabolism or even the sleep quality of human body.Like this, divide also thinner to the weighting of specific range of temperatures, weighting coefficient values is also larger.
Number of data points y (individual) temperature range (DEG C) weighting coefficient number of data points y (individual) temperature range (DEG C) weighting coefficient.
Table 1
The region integrated radiant emittance value that infrared remote receiver first time collects is designated as T1.
T1＝A1×a+B1×b+C1×c+D1×d+E1×e+F1×f+G1×g+H1×h+I1×I+J1×j+K1×k+L1×l+M1×m+N1×n+O1×o+P1×p
The region integrated radiant emittance value that infrared remote receiver second time is collected is designated as T2.
T2＝A2×a+B2×b+C2×c+D2×d+E2×e+F2×f+G2×g+H2×h+I2×I+J2×j+K2×k+L2×l+M2×m+N2×n+O2×o+P2×p
………
The rest may be inferred.
On the basis that above-mentioned weighting coefficient calculates, display device can the interval schedule time, as every 1 minute, carries out single pass and as above calculates Tn value, then carrying out cumulative statistics, carry out operational analysis to all Tn data obtained.
Preferably, in described step S5, described display device if occur significantly fluctuating for more than twice in the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, judges that user is not in sleep state before performing automatic shutdown operation.If the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn1 is in continuous decrease trend or does not have continuous fluctuation, display device enters pre-shutdown mode, wherein, and n1<n.Described pre-shutdown mode comprises: the display brightness of display device is adjusted to 50% of original brightness, and volume is adjusted to 50% of original volume.After display device enters pre-shutdown mode, if the variation tendency of described multiple integrated radiant emittance value Tn1 ~ Tn is in continuous decrease trend or in moderate tone, and be no more than the fluctuation by a small margin of twice, judge that user is in sleep state, display device performs automatic shutdown operation.
In specific implementation, Fig. 2 illustrates that the automatic shutdown method of the display device provided according to an exemplary embodiment of the present judges that user is not in dormant analysis chart.As shown in Figure 2, the words of fluctuation in more than twice or twice body temperature short time in any 10 minutes, then display device judges not enter sleep for people, and be only the reduction of the body temperature that activity or other reason cause and occur downtrending, middlely there is of short duration ascendant trend several times due to body movement.Like this, display device can reset to statistics before, again calculates from T1.
In specific implementation, Fig. 3 illustrates that the automatic shutdown method of the display device provided according to an exemplary embodiment of the present judges that user is in dormant analysis chart.As shown in Figure 3, if the variation tendency of T1 ~ T30 is in continuous decrease trend or does not have continuous wave emotionally condition, display device starts to enter pre-shutdown mode.The display brightness of display device is adjusted to 50% of original brightness, and volume adjusts to 50% of original volume.
Concrete, illustrate that at Fig. 3 the automatic shutdown method of the display device provided according to an exemplary embodiment of the present judges that user is on dormant basis, display device proceeds data acquisition, until during T40:
If the variation tendency of T31->T40 continues on a declining curve, and have the fuctuation within a narrow range (can be judged by duration and slope) being no more than twice, when so arriving T40, display device judges that user is sleeping, can automatically perform power-off operation.
If the variation tendency of T31->T40 is moderate tone, and have the fuctuation within a narrow range (can be judged by duration and slope) being no more than twice, when so arriving T40, display device also judges that user is sleeping, can automatically perform power-off operation.
If the variation tendency of T31->T40 occurs not meeting above-mentioned two kinds of conditions, be then considered as user not sleeping, add up clearing before, restart counting.
Fig. 4 illustrates the structural representation of the display device provided according to an exemplary embodiment of the present.As shown in Figure 4, according to the display device that the embodiment of the present invention provides, described display device uses said method to perform automatic shutdown operation, specifically comprises:
Sleep detection module 1, the user for detection display equipment gives off multiple infrared spectrum signals of different frequency;
Sleep judge module 2, for carrying out translation operation to described multiple infrared spectrum signal, obtain the integrated radiant emittance value T1 ~ Tn of described display device corresponding region, wherein, n is positive integer; And analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, send user and be in dormant judged result;
Shutdown processing module 3, for being in dormant judged result according to receiving described user, has sent shutdown command or standby command to display device.
Preferably, described electronic equipment can be display, televisor, game machine, and mobile terminal etc. have the electronic equipment of audio and video playing concurrently.
According to the automatic shutdown method of display device provided by the invention and the display device of use the method, utilize and detect the change that user sends infra-red spectral energy, pass through Algorithm Analysis, judge whether user is in sleep state, if judge that user is in sleep state, thus perform automatic shutdown operation, automatically close display device, energy-conserving and environment-protective, for user provides conveniently.
Each embodiment above of the present invention is only exemplary, and the present invention is not limited to this.Those skilled in the art should understand that: without departing from the principles and spirit of the present invention, can change these embodiments, wherein, scope of the present invention limits in claim and equivalent thereof.
Claims (10)
1. an automatic shutdown method for display device, comprises the following steps:
S1. the user of detection display equipment gives off multiple infrared spectrum signals of different frequency;
S2. described multiple infrared spectrum signal is converted to multiple electric signal, calculates temperature value corresponding to each electric signal respectively according to described multiple electric signal;
S3. corresponding according to each electric signal calculated temperature value obtains the integrated radiant emittance value T with display device corresponding region;
S4., after the schedule time of interval, repeat step S1 to S3, obtain multiple integrated radiant emittance value T1 ~ Tn, wherein, n is positive integer;
S5. analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, display device performs automatic shutdown operation; If the non-default downtrending of variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, then return step S1.
2. the automatic shutdown method of display device according to claim 1, it is characterized in that, in described step S3, concrete, adopt the weighting coefficient temperature value corresponding to each electric signal to be weighted, thus obtain the integrated radiant emittance value T with display device corresponding region.
3. the automatic shutdown method of display device according to claim 1, it is characterized in that, in described step S5, concrete, if occur significantly fluctuating for more than twice in the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, judge that user is not in sleep state.
4. the automatic shutdown method of display device according to claim 1, it is characterized in that, in described step S5, before described display device performs automatic shutdown operation, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn1 is in continuous decrease trend or does not have continuous fluctuation in preset time period, display device enters pre-shutdown mode, wherein, and n1<n.
5. the automatic shutdown method of display device according to claim 4, is characterized in that, described pre-shutdown mode comprises: the display brightness of display device is adjusted to 50% of original brightness, and volume is adjusted to 50% of original volume.
6. the automatic shutdown method of the display device according to claim 4 or 5, it is characterized in that, in described step S5, after display device enters pre-shutdown mode, if the variation tendency of described multiple integrated radiant emittance value Tn1 ~ Tn is in continuous decrease trend or in moderate tone, and be no more than the fluctuation by a small margin of twice, judge that user is in sleep state, display device performs automatic shutdown operation.
7. the automatic shutdown method of display device according to claim 1, is characterized in that, in described step S1, described multiple infrared spectrum signal is the infrared spectrum signal of the multiple different parts of user as analyzing spot.
8. the automatic shutdown method of display device according to claim 1, is characterized in that, in described step S2, concrete, and described electric signal is voltage signal V.
9. the automatic shutdown method of display device according to claim 1, is characterized in that, concrete, adopts formula (1) to calculate temperature value corresponding to each electric signal:
T＝39.949+(-0.00926)×V (1) 。
10. a display device, is characterized in that, described display device uses the method described in any one of claim 1-9 to perform automatic shutdown operation, specifically comprises:
Sleep detection module, the user for detection display equipment gives off multiple infrared spectrum signals of different frequency;
Sleep judge module, for carrying out translation operation to described multiple infrared spectrum signal, obtain the integrated radiant emittance value T1 ~ Tn of described display device corresponding region, wherein, n is positive integer; And analyze the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn, if the variation tendency of described multiple integrated radiant emittance value T1 ~ Tn is default downtrending, then judge that user is in sleep state, send user and be in dormant judged result;
Shutdown processing module, for being in dormant judged result according to receiving described user, has sent shutdown command or standby command to display device.
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