CN104064162A - Automatic external defibrillator, and display screen brightness adjusting method and apparatus thereof - Google Patents
Automatic external defibrillator, and display screen brightness adjusting method and apparatus thereof Download PDFInfo
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Abstract
The invention provides an automatic external defibrillator, and a display screen brightness adjusting method and apparatus thereof. Illuminance value of an environment is acquired according to a preset frequency, a comparison is made between the illuminance value and a current brightness of a display screen, continuous frequency or time when the illuminance value does not match the current brightness is counted, whether the continuous frequency or the time exceeds a predetermined value is determined, and if so, the current brightness of the display screen is adjusted to match the illuminance value, and the brightness of the display screen is automatically adjusted according to the illuminance of the environment, such that the operation is simplified, the efficiency is improved, at the same time, whether the continuous frequency or the time exceeds a predetermined value when the illuminance value exceeds the predetermined value is calculated as a brightness adjusting condition, and the determination accuracy and stability are improved.
Description
Technical field
The present invention relates to display technology, particularly relate to a kind of automated external defibrillator and brightness of display screen control method and device.
Background technology
Automated external defibrillator (Automatic External Defibrillator, AED), is a kind of Medical Devices of portable, can diagnose ventricular fibrillation, and shock by electricity and quiver, and corrects Heart Rate.
Screen intensity or the fixed value of the display of tradition AED equipment, or need user's manual adjustments, in the situation that environmental light brightness is higher or lower, check inconvenience, manual adjustments screen intensity complex operation, has a strong impact on user's use, even incurs loss through delay defibrillation therapy and causes serious consequence.
Summary of the invention
Based on this, being necessary needs manual adjustments screen intensity to cause the problem of complex operation for automated external defibrillator, and a kind of automated external defibrillator that can simplify the operation and brightness of display screen control method and device are provided.
A kind of brightness of display screen control method, comprises the steps:
Press the illuminance value of predeterminated frequency collection environment;
Contrast the current brightness of described illuminance value and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or time;
Judge whether described read-around ratio or time exceed predetermined value;
If so, the current brightness of adjusting described display screen is mated with described illuminance value.
Therein in an embodiment, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Contrast current brightness corresponding numerical value interval and the buffer zone of described illuminance value and display screen, and add up described illuminance value and the unmatched read-around ratio in described current brightness corresponding numerical value interval and buffer zone or time.
Therein in an embodiment, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Determine the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining;
Judge whether numerical value interval corresponding to described current brightness is the adjacent numerical value interval in the numerical value interval at described illuminance value place or the numerical value interval at illuminance value place;
If so, described illuminance value and described current brightness matching, if not, described illuminance value is not mated with described current brightness;
Add up described unmatched read-around ratio or time.
Therein in an embodiment, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Determine the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value, sorts from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in described interval;
If the numerical value interval that described current brightness is mated is the first interval, add up described illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time;
If the numerical value interval that described current brightness is mated is the 3rd interval, add up described illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
In an embodiment, the step that the current brightness of the described display screen of described adjustment is mated with described illuminance value is therein:
If the interval that described current brightness is mated is the first interval, adjusting described display screen is high brightness pattern;
If the interval that described current brightness is mated is the 3rd interval, adjusting described display screen is low-luminance mode, and the brightness of described low-luminance mode is the 35-45% of the brightness of high brightness pattern.
A kind of brightness of display screen regulating device, comprising:
Acquisition module, for pressing the illuminance value of predeterminated frequency collection environment;
Statistical module, for contrasting the current brightness of described illuminance value and display screen, and adds up described illuminance value and the unmatched read-around ratio of described current brightness or time;
Judge module, for judging whether described read-around ratio or time exceed predetermined value;
Adjusting module, for determining described read-around ratio or time while exceeding predetermined value, the current brightness of adjusting described display screen is mated with described illuminance value.
Therein in an embodiment, described statistical module also, for contrasting current brightness corresponding numerical value interval and the buffer zone of described illuminance value and display screen, is added up described illuminance value and the unmatched read-around ratio in described current brightness corresponding numerical value interval and buffer zone or time.
In an embodiment, described statistical module comprises therein:
First searches unit, and for determining the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining;
The first judging unit, for judging whether numerical value interval corresponding to described current brightness is the adjacent numerical value interval in the numerical value interval at described illuminance value place or the numerical value interval at illuminance value place, if, described illuminance value and described current brightness matching, if not, described illuminance value is not mated with described current brightness;
The first statistic unit, for adding up described illuminance value and the unmatched read-around ratio of described current brightness or time.
In an embodiment, described statistical module comprises therein:
Second searches unit, for determining the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value, sorts from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in described interval;
The second judging unit, if for judging that the numerical value interval that described current brightness is mated is the first interval or the 3rd interval;
The second statistic unit, while being the first interval for the numerical value interval of mating in described current brightness, add up described illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time, the numerical value interval of mating in described current brightness is the 3rd when interval, add up described illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
Therein in an embodiment, when described adjusting module is also the first interval for the interval of mating in described current brightness, adjusting described display screen is high brightness pattern, when the interval of mating in described current brightness is the 3rd interval, adjusting described display screen is low-luminance mode, and the brightness of described low-luminance mode is the 35-45% of the brightness of high brightness pattern.
A kind of automated external defibrillator, adopts above-mentioned brightness of display screen control method or comprises above-mentioned brightness of display screen regulating device.
Above-mentioned automated external defibrillator and brightness of display screen control method and device, gather the illuminance value of environment by pressing predeterminated frequency, contrast the current brightness of described illuminance value and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or time, judge whether described read-around ratio or time exceed predetermined value, if, the current brightness of adjusting described display screen is mated with described illuminance value, automatically regulate brightness of display screen according to the illuminance value of environment, simplify operation, improve efficiency, whether the read-around ratio and the time that exceed preset value by adding up illuminance value exceed preset value as brightness regulation condition simultaneously, improve the Stability and veracity of judgement.
Brief description of the drawings
Fig. 1 is a kind of brightness of display screen control method process flow diagram in an embodiment;
Fig. 2 is a kind of brightness of display screen control method process flow diagram in another embodiment;
Fig. 3 is a kind of brightness of display screen control method process flow diagram in another embodiment;
Fig. 4 is a kind of brightness of display screen regulating device structural representation in an embodiment;
Fig. 5 is the statistical module structural representation in Fig. 4 in an embodiment;
Fig. 6 is the statistical module structural representation in Fig. 4 in another embodiment.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the technical scheme of automated external defibrillator and brightness of display screen control method and device is described in detail, so that it is clearer.
As shown in Figure 1, in one embodiment, a kind of brightness of display screen control method, comprises the steps:
Step S110, by the illuminance value of predeterminated frequency collection environment.
In the present embodiment, gather the brightness of ambient light by predeterminated frequency, change with the brightness of finding environment, this brightness represents with illuminance.Illuminance, is a kind of brightness measurement index, unit be lumen/square metre, i.e. Lux degree (lux), represents the luminous flux being subject on shot subject surface unit area.The frequency that gathers illuminance value can be preset, as 1 second/time.Gather illuminance value spacedly, can save power, reduce calculated amount.
Step S130, the current brightness of contrast illuminance value and display screen, and add up illuminance value and the unmatched read-around ratio of current brightness or time.
In the present embodiment; because human eye can be automatically according to the brightness regulation pupil size of incident ray; to control the light intensity that enters human eye; protect eyes and see object clearly; but; human eye pupil adjusting range is regulated the speed more greatly slower; and the adjustment of human eye pupil too frequently easily causes visual fatigue; so; the standard that the illuminance value of environment and the brightness of display screen match is; the focus point of human eye, in the time that environment and display screen switch between the two, needn't significantly be adjusted pupil size and be difficult for causing visual fatigue.Concrete, can judge by inquiring about default contrast relationship, this default contrast relationship is included in the brightness of display screen mating under the illuminance of multiple environment.If the illuminance value of environment is not mated with the current brightness of display screen, be that current environment illuminance is not corresponding with current brightness of display screen, add up this illuminance value and the unmatched read-around ratio of current brightness or time, if this unmatched read-around ratio or time interrupt, in the middle of, there is the situation of overmatching, again add up.When also can being avoided the illuminance value of environment unstable, this adjusts too frequently the brightness of display screen.
Step S150, judges whether read-around ratio or time exceed predetermined value.
In the present embodiment, the illuminance value of environment and the unmatched read-around ratio of current brightness or the time of display screen to statistics judge, judge whether read-around ratio exceedes preset times, and judge whether the unmatched time exceedes Preset Time, preset times can be 10 times, and Preset Time can be 10 seconds.
Step S170, determines the current brightness that this read-around ratio or time adjusts display screen while exceeding predetermined value and mates with illuminance value.
In the present embodiment, if determine the illuminance value of environment and the unmatched read-around ratio of current brightness or the time of display screen exceed predetermined value, the current brightness of adjusting display screen is mated with illuminance value, otherwise does not adjust and return step S110.This adjustment can be automatically according to default contrast relationship, the brightness of display screen to be adjusted, and the brightness of display screen is mated with ambient light value.After the brightness adjustment of display screen is good, return to step S110.
Above-mentioned brightness of display screen control method, gather the illuminance value of environment by pressing predeterminated frequency, the current brightness of contrast illuminance value and display screen, and add up illuminance value and the unmatched read-around ratio of current brightness or time, judge whether read-around ratio or time exceed predetermined value, if, the current brightness of adjusting display screen is mated with illuminance value, automatically regulate brightness of display screen according to the illuminance value of environment, simplify operation, improve efficiency, whether the read-around ratio and the time that exceed preset value by adding up illuminance value exceed preset value as brightness regulation condition simultaneously, improve the Stability and veracity of judgement.
In above-mentioned steps S130, illuminance value is can by stages corresponding one by one with the brightness of display screen, the i.e. interval corresponding brightness of illuminance value, the illuminance value of environment changes to another interval, think that illuminance value do not mate with current brightness, by current brightness adjustment to change after the interval corresponding brightness of illuminance value.
For fear of adjusting too frequently brightness, in another embodiment, above-mentioned steps S130 is specially current brightness corresponding numerical value interval and the buffer zone of contrast illuminance value and display screen, and adds up illuminance value and the unmatched read-around ratio in current brightness corresponding numerical value interval and buffer zone or time.Buffer zone can be adjacent one or more intervals in the corresponding numerical value of current brightness interval, and such as illuminance value is divided into 5 intervals, the brightness of display screen is also divided into 5 grades corresponding one by one with 5 illuminance value intervals.Original state illuminance value is positioned at the 3rd interval, display-screen brightness grading is 3, change to the 4th when interval in illuminance value, because the 4th interval is adjacent with the 3rd interval, for buffer zone, it is 3 constant that display-screen brightness grading maintains, if illuminance value changes to the 5th when interval, display-screen brightness grading adjusts to 5.That is to say, whether belong to the interval and buffer zone of the corresponding numerical value of current brightness institute by the illuminance value of contrast_environment and judge whether illuminance value mates with current brightness corresponding numerical value interval and buffer zone, if not, add up read-around ratio or the time that this illuminance value does not belong to this numerical value interval and buffer zone; If so, do not add up, and by the number of times of having added up or time zero clearing.Buffer zone has expanded a scope that brightness is mated, and has reduced the brightness adjustment frequency of display screen, has kept the brightness stability of display screen.
In another embodiment, as shown in Figure 2, above-mentioned steps S130 comprises the steps:
Step S131, determines the numerical value interval at illuminance value place.
This numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining.Wherein N is greater than 0 integer.By being contrasted, the maximum boundary value in illuminance value and a numerical value interval and minimum edge dividing value can judge whether in this numerical value interval.
Step S133, judges whether numerical value interval corresponding to current brightness is the adjacent numerical value interval in the numerical value interval at illuminance value place or the numerical value interval at illuminance value place.Be in the present embodiment, the adjacent numerical value interval in the numerical value interval at illuminance value place is as above-mentioned buffer zone, if so, illuminance value and current brightness matching, if not, illuminance value is not mated with current brightness.Whether according to each interval boundary value, whether correspondent equal can be judged two intervals is identical interval.
Step S135, adds up unmatched read-around ratio or time.If numerical value interval corresponding to current brightness is not the numerical value interval at illuminance value place, the adjacent numerical value interval in numerical value interval that neither illuminance value place, illuminance value is not mated with current brightness, adds up this unmatched read-around ratio or duration.
In the present embodiment, divide clearly numerical value interval and judge mating between ambient light value and current brightness of display screen value according to mating between interval and interval, in the time that the illuminance value in bad border just changes to the adjacent area of a buffering, do not adjust the current brightness of display screen, avoided adjusting too frequently.
In another embodiment, as shown in Figure 3, above-mentioned steps S130 comprises the steps:
Step S141, determines the numerical value interval at illuminance value place, and this numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value.Sort from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in interval.For instance, this first preset value can be 200 lumens/watt, and the second preset value can be 50000 lumens/watt, and these two preset values meet most of illuminance environment.
Step S143, judges that the numerical value interval that current brightness is mated is the first interval or the 3rd interval.Be in the present embodiment, be divided into three illuminance value numerical value intervals, the first interval is low irradiance value numerical value interval, and corresponding brightness of display screen is low-light level; The 3rd interval is high illuminance value numerical value interval, and corresponding brightness of display screen is high brightness; And Jian Wei buffer zone, Second Region, both can corresponding high brightness, also can corresponding low-light level.
Step S145, if the numerical value interval that current brightness is mated is the first interval, add up illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time.
Step S147, if the numerical value interval that current brightness is mated is the 3rd interval, add up illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
In the present embodiment, if the numerical value interval that current brightness is mated is the first interval, add up illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time; If the numerical value interval that current brightness is mated is the 3rd interval, add up illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.By between Second Region as buffer zone, if the illuminance value of environment between Second Region, thinks that current brightness is the illuminance value of matched environment.The numerical range of illuminance value is divided into the numerical value interval of three non-overlapping copies, judges with the illuminance value of statistical environment and the brightness of current display screen and whether mate, simplify the operation, raise the efficiency.
In one embodiment, above-mentioned steps S170 adjusts the step that the current brightness of display screen mates with illuminance value and is specially: if the interval that current brightness is mated is the first interval (is current be low-luminance mode), adjusting display screen is high brightness pattern; If the interval that current brightness is mated is the 3rd interval (is current for high brightness pattern), adjusting display screen is low-luminance mode, and the brightness of low-luminance mode is the 35-45% of the brightness of high brightness pattern.This low-luminance mode is mated most of low irradiance environment, and the most of high illuminance environment of high brightness pattern match, middle illuminance environment as buffer zone is not adjusted the current brightness of display screen, the brightness value of low-luminance mode is less than the brightness of high brightness pattern, the brightness of low-luminance mode is the 35-45% of the brightness of high brightness pattern, by being the 35-45% of the brightness of high brightness pattern by the brightness of low-luminance mode, be convenient to people's adaptation of eye and make human eye be not easy to fatigue simultaneously, have more hommization.
In one embodiment, above-mentioned steps S110 is specially the illuminance value of an optical sensor collection environment by being located at display screen the same face.By optical sensor being located to the same face of display screen, be convenient to accurately gather the illuminance value of environment, gather the illuminance value of environment by an optical sensor, reduce interface and taken up room, more attractive in appearance.This optical sensor can be the photoelectric sensor such as photodiode or phototriode.Convert the light signal obtaining to electric signal by optical sensor, then obtain the illuminance value of environment by steps such as signal amplification, analog to digital conversion and numerical value mappings.Concrete, by the light-guiding pillar reception environment light signal of optical sensor, by the microcontroller in the chip of optical sensor, the light signal gathering is carried out to opto-electronic conversion and analog to digital conversion, by I2C(Inter-Integrated Circuit, inter-integrated circuit) digital interface obtain optical sensor gather data.I2C digital interface is a kind of synchronous communication mode, and the advantage such as have that interface line is few, the simple and device package form of control mode is little can improve traffic rate.
As shown in Figure 4, in one embodiment, a kind of brightness of display screen regulating device, comprises acquisition module 110, statistical module 130, judge module 150 and adjusting module 170.
Acquisition module 110, for pressing the illuminance value of predeterminated frequency collection environment.
In the present embodiment, acquisition module 110 is pressed the brightness of predeterminated frequency collection ambient light, changes with the brightness of finding environment, and this brightness represents with illuminance.Illuminance, is a kind of brightness measurement index, unit be lumen/square metre, i.e. Lux degree (lux), represents the luminous flux being subject on shot subject surface unit area.The frequency that gathers illuminance value can be preset, as 1 second/time.Gather illuminance value spacedly, can save power, reduce calculated amount.
Statistical module 130, for contrasting the current brightness of illuminance value and display screen, and adds up illuminance value and the unmatched read-around ratio of current brightness or time.
In the present embodiment; because human eye can be automatically according to the brightness regulation pupil size of incident ray; to control the light intensity that enters human eye; protect eyes and see object clearly; but; human eye pupil adjusting range is regulated the speed more greatly slower; and the adjustment of human eye pupil too frequently easily causes visual fatigue; so; the standard that the illuminance value of environment and the brightness of display screen match is; the focus point of human eye, in the time that environment and display screen switch between the two, needn't significantly be adjusted pupil size and be difficult for causing visual fatigue.Concrete, can judge by inquiring about default contrast relationship, this default contrast relationship is included in the brightness of display screen mating under the illuminance of many middle environment.If the illuminance value of environment is not mated with the current brightness of display screen, be that current environment illuminance is not corresponding with current brightness of display screen, add up this illuminance value and the unmatched read-around ratio of current brightness or time, if this unmatched read-around ratio or time interrupt, in the middle of, there is the situation of overmatching, again add up.When also can being avoided the illuminance value of environment unstable, this adjusts too frequently the brightness of display screen.
Judge module 150, for judging whether read-around ratio or time exceed predetermined value.
In the present embodiment, judge module 150 judged the illuminance value of environment and the unmatched read-around ratio of current brightness or the time of display screen of statistics, judge whether read-around ratio exceedes preset times, and judge whether the unmatched time exceedes Preset Time, preset times can be 10 times, and Preset Time can be 10 seconds.
Adjusting module 170, the current brightness of adjusting display screen for determining this read-around ratio or time while exceeding predetermined value is mated with illuminance value.
In the present embodiment, if determine the illuminance value of environment and the unmatched read-around ratio of current brightness or the time of display screen exceed predetermined value, the current brightness of adjusting display screen is mated with illuminance value, otherwise does not adjust.This adjustment can be automatically according to default contrast relationship, the brightness of display screen to be adjusted, and the brightness of display screen is mated with ambient light value.
Above-mentioned brightness of display screen regulating device, gather the illuminance value of environment by pressing predeterminated frequency, the current brightness of contrast illuminance value and display screen, and add up illuminance value and the unmatched read-around ratio of current brightness or time, judge whether read-around ratio or time exceed predetermined value, if, the current brightness of adjusting display screen is mated with illuminance value, automatically regulate brightness of display screen according to the illuminance value of environment, simplify operation, improve efficiency, whether the read-around ratio and the time that exceed preset value by adding up illuminance value exceed preset value as brightness regulation condition simultaneously, improve the Stability and veracity of judgement.
In above-mentioned statistical module 130, illuminance value is can by stages corresponding one by one with the brightness of display screen, the i.e. interval corresponding brightness of illuminance value, the illuminance value of environment changes to another interval, think that illuminance value do not mate with current brightness, by current brightness adjustment to change after the interval corresponding brightness of illuminance value.
For fear of adjusting too frequently brightness, in another embodiment, above-mentioned statistical module 130 is also for contrasting current brightness corresponding numerical value interval and the buffer zone of illuminance value and display screen, and adds up illuminance value and the unmatched read-around ratio in current brightness corresponding numerical value interval and buffer zone or time.Buffer zone can be adjacent one or more intervals in the corresponding numerical value of current brightness interval, and such as illuminance value is divided into 5 intervals, the brightness of display screen is also divided into 5 grades corresponding one by one with 5 illuminance value intervals.Original state illuminance value is positioned at the 3rd interval, display-screen brightness grading is 3, change to the 4th when interval in illuminance value, because the 4th interval is adjacent with the 3rd interval, for buffer zone, it is 3 constant that display-screen brightness grading maintains, if illuminance value changes to the 5th when interval, display-screen brightness grading adjusts to 5.That is to say, whether belong to the interval and buffer zone of the corresponding numerical value of current brightness institute by the illuminance value of contrast_environment and judge whether illuminance value mates with current brightness corresponding numerical value interval and buffer zone, if not, add up read-around ratio or the time that this illuminance value does not belong to this numerical value interval and buffer zone; If so, do not add up, and by the number of times of having added up or time zero clearing.Buffer zone has expanded a scope that brightness is mated, and has reduced the brightness adjustment frequency of display screen, has kept the brightness stability of display screen.
In another embodiment, as shown in Figure 5, above-mentioned statistical module 130 comprises that first searches unit 131, the first judging unit 133 and the first statistic unit 135.
First searches unit 131, for determining the numerical value interval at illuminance value place.
This numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining.Wherein N is greater than 0 integer.By being contrasted, the maximum boundary value in illuminance value and a numerical value interval and minimum edge dividing value can judge whether in this numerical value interval.
The first judging unit 133, for judging whether numerical value interval corresponding to current brightness is the adjacent numerical value interval in the numerical value interval at illuminance value place or the numerical value interval at illuminance value place.Be in the present embodiment, the adjacent numerical value interval in the numerical value interval at illuminance value place is as above-mentioned buffer zone, if so, illuminance value and current brightness matching, if not, illuminance value is not mated with current brightness.Whether according to each interval boundary value, whether correspondent equal can be judged two intervals is identical interval.
The first statistic unit 135, for adding up unmatched read-around ratio or time.If numerical value interval corresponding to current brightness is not the numerical value interval at illuminance value place, the adjacent numerical value interval in numerical value interval that neither illuminance value place, illuminance value is not mated with current brightness, adds up this unmatched read-around ratio or duration.
In the present embodiment, divide clearly numerical value interval and judge mating between ambient light value and current brightness of display screen value according to mating between interval and interval, in the time that the illuminance value in bad border just changes to the adjacent area of a buffering, do not adjust the current brightness of display screen, avoided adjusting too frequently.
In another embodiment, as shown in Figure 6, above-mentioned statistical module 130 comprises that second searches unit 141, the second judging unit 143 and the second statistic unit 145.
Second searches unit 141, and for determining the numerical value interval at illuminance value place, this numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value.Sort from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in interval.For instance, this first preset value can be 200 lumens/watt, and the second preset value can be 50000 lumens/watt, and these two preset values meet most of illuminance environment.
The second judging unit 143, for judging that the numerical value interval that current brightness is mated is the first interval or the 3rd interval.Be in the present embodiment, be divided into three illuminance value numerical value intervals, the first interval is low irradiance value numerical value interval, and corresponding brightness of display screen is low-light level; The 3rd interval is high illuminance value numerical value interval, and corresponding brightness of display screen is high brightness; And Jian Wei buffer zone, Second Region, both can corresponding high brightness, also can corresponding low-light level.
The second statistic unit 145, if the numerical value interval of mating for current brightness is the first interval, add up illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time; If the numerical value interval that current brightness is mated is the 3rd interval, add up illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
In the present embodiment, if the numerical value interval that current brightness is mated is the first interval, add up illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time; If the numerical value interval that current brightness is mated is the 3rd interval, add up illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.By between Second Region as buffer zone, if the illuminance value of environment between Second Region, thinks that current brightness is the illuminance value of matched environment.The numerical range of illuminance value is divided into the numerical value interval of three non-overlapping copies, judges with the illuminance value of statistical environment and the brightness of current display screen and whether mate, simplify the operation, raise the efficiency.
In one embodiment, when above-mentioned adjusting module 170 is also the first interval (be current for low-luminance mode) for the interval of mating in current brightness, adjusting display screen is high brightness pattern, when the interval of mating in current brightness is the 3rd interval (be current for high brightness pattern), adjusting display screen is low-luminance mode, and the brightness of low-luminance mode is the 35-45% of the brightness of high brightness pattern.This low-luminance mode is mated most of low irradiance environment, and the most of high illuminance environment of high brightness pattern match, middle illuminance environment as buffer zone is not adjusted the current brightness of display screen, the brightness value of low-luminance mode is less than the brightness of high brightness pattern, the brightness of low-luminance mode is the 35-45% of the brightness of high brightness pattern, by being the 35-45% of the brightness of high brightness pattern by the brightness of low-luminance mode, be convenient to people's adaptation of eye and make human eye be not easy to fatigue simultaneously, have more hommization.
In one embodiment, above-mentioned acquisition module 110 is also for gathering the illuminance value of environment by an optical sensor being located at display screen the same face.By optical sensor being located to the same face of display screen, be convenient to accurately gather the illuminance value of environment, gather the illuminance value of environment by an optical sensor, reduce interface and taken up room, more attractive in appearance.This optical sensor can be the photoelectric sensor such as photodiode or phototriode.Convert the light signal obtaining to electric signal by optical sensor, then obtain the illuminance value of environment by steps such as signal amplification, analog to digital conversion and numerical value mappings.Concrete, by the light-guiding pillar reception environment light signal of optical sensor, by the microcontroller in the chip of optical sensor, the light signal gathering is carried out to opto-electronic conversion and analog to digital conversion, obtain by I2C digital interface the data that optical sensor gathers.I2C digital interface is a kind of synchronous communication mode, and the advantage such as have that interface line is few, the simple and device package form of control mode is little can improve traffic rate.
Above-mentioned brightness of display screen control method and brightness of display screen regulating device all can be applicable in automated external defibrillator.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (11)
1. a brightness of display screen control method, comprises the steps:
Press the illuminance value of predeterminated frequency collection environment;
Contrast the current brightness of described illuminance value and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or time;
Judge whether described read-around ratio or time exceed predetermined value;
If so, the current brightness of adjusting described display screen is mated with described illuminance value.
2. brightness of display screen control method according to claim 1, is characterized in that, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Contrast current brightness corresponding numerical value interval and the buffer zone of described illuminance value and display screen, and add up described illuminance value and the unmatched read-around ratio in described current brightness corresponding numerical value interval and buffer zone or time.
3. brightness of display screen control method according to claim 1, is characterized in that, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Determine the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining;
Judge whether numerical value interval corresponding to described current brightness is the adjacent numerical value interval in the numerical value interval at described illuminance value place or the numerical value interval at illuminance value place;
If so, described illuminance value and described current brightness matching, if not, described illuminance value is not mated with described current brightness;
Add up described unmatched read-around ratio or time.
4. brightness of display screen control method according to claim 1, is characterized in that, the current brightness of the described illuminance value of described contrast and display screen, and add up described illuminance value and the unmatched read-around ratio of described current brightness or the step of time and be:
Determine the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value, sorts from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in described interval;
If the numerical value interval that described current brightness is mated is the first interval, add up described illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time;
If the numerical value interval that described current brightness is mated is the 3rd interval, add up described illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
5. brightness of display screen control method according to claim 4, is characterized in that, the step that the current brightness of the described display screen of described adjustment is mated with described illuminance value is:
If the interval that described current brightness is mated is the first interval, adjusting described display screen is high brightness pattern;
If the interval that described current brightness is mated is the 3rd interval, adjusting described display screen is low-luminance mode, and the brightness of described low-luminance mode is the 35-45% of the brightness of high brightness pattern.
6. a brightness of display screen regulating device, comprising:
Acquisition module, for pressing the illuminance value of predeterminated frequency collection environment;
Statistical module, for contrasting the current brightness of described illuminance value and display screen, and adds up described illuminance value and the unmatched read-around ratio of described current brightness or time;
Judge module, for judging whether described read-around ratio or time exceed predetermined value;
Adjusting module, for determining described read-around ratio or time while exceeding predetermined value, the current brightness of adjusting described display screen is mated with described illuminance value.
7. brightness of display screen regulating device according to claim 6, it is characterized in that, described statistical module also, for contrasting current brightness corresponding numerical value interval and the buffer zone of described illuminance value and display screen, is added up described illuminance value and the unmatched read-around ratio in described current brightness corresponding numerical value interval and buffer zone or time.
8. brightness of display screen regulating device according to claim 6, is characterized in that, described statistical module comprises:
First searches unit, and for determining the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value being divided according to N preset value an interval in N+1 the mutual nonoverlapping interval obtaining;
The first judging unit, for judging whether numerical value interval corresponding to described current brightness is the adjacent numerical value interval in the numerical value interval at described illuminance value place or the numerical value interval at illuminance value place, if, described illuminance value and described current brightness matching, if not, described illuminance value is not mated with described current brightness;
The first statistic unit, for adding up described illuminance value and the unmatched read-around ratio of described current brightness or time.
9. brightness of display screen regulating device according to claim 6, is characterized in that, described statistical module comprises:
Second searches unit, for determining the numerical value interval at described illuminance value place, described numerical value is interval for the numerical range of illuminance value is divided to an interval in three mutual nonoverlapping intervals that obtain according to the first preset value and the second preset value, sorts from small to large and be followed successively by between the first interval, Second Region and the 3rd interval according to the size of greatest measure in described interval;
The second judging unit, if for judging that the numerical value interval that described current brightness is mated is the first interval or the 3rd interval;
The second statistic unit, while being the first interval for the numerical value interval of mating in described current brightness, add up described illuminance value in the read-around ratio in the 3rd interval or time as unmatched read-around ratio or time, the numerical value interval of mating in described current brightness is the 3rd when interval, add up described illuminance value in the read-around ratio in the first interval or time as unmatched read-around ratio or time.
10. brightness of display screen regulating device according to claim 9, it is characterized in that, when described adjusting module is also the first interval for the interval of mating in described current brightness, adjusting described display screen is high brightness pattern, when the interval of mating in described current brightness is the 3rd interval, adjusting described display screen is low-luminance mode, and the brightness of described low-luminance mode is the 35-45% of the brightness of high brightness pattern.
11. 1 kinds of automated external defibrillators, is characterized in that, adopt in claim 1 to 5 the brightness of display screen control method described in any one or comprise the brightness of display screen regulating device described in any one in claim 6 to 10.
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