CN105137886B - A kind of human-machine interface control device and control method - Google Patents
A kind of human-machine interface control device and control method Download PDFInfo
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- CN105137886B CN105137886B CN201510602187.7A CN201510602187A CN105137886B CN 105137886 B CN105137886 B CN 105137886B CN 201510602187 A CN201510602187 A CN 201510602187A CN 105137886 B CN105137886 B CN 105137886B
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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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
Abstract
The invention discloses a kind of human-machine interface control device and control method, human-machine interface control device includes temperature detecting module, comparison module and control module；Temperature detecting module acquires a face temperature every preset time, and by face temperature transition at corresponding initial voltage signal；Comparison module amplifies the initial voltage signal and is compared after steady pressure treatment with preset term of reference, and control module controls the bright dark of man-machine interface backlight according to comparison result；The bright-dark degree that backlight can be suitably adjusted according to actual viewing distance, can avoid inappropriate backlight illumination influences display effect, reduces the injury to eyes.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to a kind of human-machine interface control device and controlling parties
Method.
Background technique
Currently, more and more users are surfed the Internet using intelligent mobile terminal, are read as intelligent mobile terminal is universal
The recreations such as read, play games.When in use, if eyes are close from display screen, current backlight brightness easily injures eyes to user；If
Farther apart, current backlight brightness may influence display effect.And existing intelligent mobile terminal is not yet according to viewing distance
Carry out the technical solution of adjusting backlight luminance, more intelligent backlight effect cannot be provided for user.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of human-machine interface control device and
Control method, it is intended to solve the problems, such as that the backlight of existing display screen cannot be according to viewing distance automatic regulating lightness.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of human-machine interface control device comprising temperature detecting module, comparison module and control module;
The temperature detecting module acquires a face temperature every preset time, and by face temperature transition at corresponding
Initial voltage signal；Comparison module amplifies the initial voltage signal and is carried out after steady pressure treatment with preset term of reference
Compare, control module controls the bright dark of man-machine interface backlight according to comparison result.
In the human-machine interface control device, the temperature detecting module includes that infrared temperature sensor and output are single
Member；
The infrared temperature sensor is described for acquiring face temperature in real time and being converted into corresponding initial voltage signal
Output unit is every the primary current initial voltage signal of preset time output.
In the human-machine interface control device, the comparison module includes that amplifying unit, voltage regulation unit and voltage compare
Unit:
The amplifying unit amplifies the initial voltage signal, then carries out voltage regulation filtering processing by voltage regulation unit
After output voltage signal to voltage comparison unit；
Voltage signal is compared by voltage comparison unit with preset term of reference, if voltage signal, which is less than, refers to model
It encloses, the comparison result of output is low level；If voltage signal, in term of reference, the comparison result of output is the three of a cycle
Angle wave；If voltage signal is greater than term of reference, the comparison result of output is high level.
In the human-machine interface control device, the comparison module further include:
Distance detection unit, for according to the voltage signal after amplification steady pressure treatment identify face and display screen away from
From.
In the human-machine interface control device, the control module includes Power Management Unit and back light unit；
When comparison result is low level, the Power Management Unit output increases signal control back light unit for backlight illumination
It lightens；
When comparison result is high level, the Power Management Unit output reduces signal control back light unit for backlight illumination
It dims；
When comparison result is triangular wave, the Power Management Unit control back light unit keeps current backlight illumination.
A kind of human-computer interface control method comprising:
A, temperature detecting module acquires a face temperature every preset time, and by face temperature transition at corresponding first
Beginning voltage signal；
B, the initial voltage signal is compared by comparison module with preset term of reference, and control module is according to comparing
As a result the bright dark of man-machine interface backlight is controlled.
In the human-computer interface control method, the step A is specifically included:
A1, infrared temperature sensor are for acquiring face temperature in real time and being converted into corresponding initial voltage signal；
A2, output unit are every the primary current initial voltage signal of preset time output.
In the human-computer interface control method, in the step B, comparison module is by the initial voltage signal and in advance
If term of reference be compared before, further includes: the initial voltage signal is amplified, voltage regulation filtering processing after export
Voltage signal；The voltage signal is compared with preset term of reference.
In the human-computer interface control method, in the step B, if voltage signal is less than term of reference, the ratio of output
Relatively result is low level；If voltage signal, in term of reference, the comparison result of output is the triangular wave of a cycle；If voltage
Signal is greater than term of reference, and the comparison result of output is high level.
In the human-computer interface control method, in the step B,
When comparison result is low level, the Power Management Unit output increases signal control back light unit for backlight illumination
It lightens；
When comparison result is the triangular wave of a cycle, the backlight that Power Management Unit control back light unit keeps current is bright
Degree；
When comparison result is high level, Power Management Unit output reduces signal control back light unit for backlight illumination tune
Secretly.
Compared to the prior art, human-machine interface control device provided by the invention and control method pass through temperature detection mould
Block acquires a face temperature every preset time, and by face temperature transition at corresponding initial voltage signal；Comparison module
The initial voltage signal is amplified and is compared with preset term of reference after steady pressure treatment, control module is according to comparing
As a result the bright dark of man-machine interface backlight is controlled；The bright-dark degree of backlight can be suitably adjusted according to actual viewing distance, can avoid
Inappropriate backlight illumination influences display effect, reduces the injury to eyes.
Detailed description of the invention
Fig. 1 is the structural block diagram of human-machine interface control device provided by the invention.
Fig. 2 is that temperature detecting module and the working principle of comparison module are shown in human-machine interface control device provided by the invention
It is intended to.
Fig. 3 is the setting schematic diagram of reference voltage signal in human-machine interface control device provided by the invention.
Fig. 4 is human-computer interface control method flow diagram provided by the invention.
Specific embodiment
The present invention provides a kind of human-machine interface control device and control method.For make the purpose of the present invention, technical solution and
Advantage is clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1, human-machine interface control device setting provided by the invention is in the terminal comprising temperature
Detection module 10, comparison module 20 and control module 30.The temperature detecting module 10, comparison module 20, control module 30 according to
Secondary connection.The temperature detecting module 10 acquires a face temperature every preset time, and by face temperature transition at correspondence
Initial voltage signal.Comparison module 20 to the initial voltage signal amplify after steady pressure treatment with preset term of reference
It is compared, control module 30 controls the bright dark of man-machine interface backlight according to comparison result.
In the present embodiment, the man-machine interface, that is, display screen.The temperature detecting module 10 includes model TS118-3's
Infrared temperature sensor 101 and output unit 102.The infrared temperature sensor 101 is arranged at the top of the front of mobile terminal,
Accidentally acquisition hand temperature influence backlight accidentally controls when can avoid hand-held mobile terminal.As shown in Fig. 2, the infrared temperature sensor
101 for acquiring face temperature in real time and being converted into corresponding initial voltage signal, high to the induction precision of face temperature.It is described
Output unit 102 is every preset timeThe primary current initial voltage signal Va of output, to reduce data volume to be treated,
Saving system runs power consumption.
The voltage signal exported based on temperature detecting module 10 is weaker, and comparison module 20 also needs to carry out phase before being compared
It should handle to enhance the stability of voltage signal.Then the comparison module 20 includes amplifying unit 201, voltage regulation unit 202, voltage
Comparing unit 203 and distance detection unit 204.The amplifying unit 201 puts the initial voltage signal voltage signal
Greatly, output voltage signal Vb is into voltage comparison unit 203 after then carrying out voltage regulation filtering processing by voltage regulation unit 202.It is default
Term of reference on the basis of reference voltage signal Vx ± threshold value (such as 0.5V).
The distance detection unit 204 according to the voltage signal after amplification steady pressure treatment identify face and display screen away from
From i.e. viewing distance Lb.Voltage comparison unit 203 by actual acquisition treated voltage signal Vb and preset term of reference into
Row compares, if voltage signal is less than term of reference, i.e. Vb < (Vx-0.5V), the comparison result of output is low level L；If voltage is believed
Number in term of reference, i.e. for Vb in (Vx ± 0.5V) range, the comparison result of output is the triangular wave TW of a cycle；If electric
Signal is pressed to be greater than term of reference, i.e. Vb > (Vx+0.5V), the comparison result of output is high level H.
The reference voltage signal is arranged jointly by temperature detecting module 10 and comparison module 20, as shown in figure 3, specifically
Are as follows: user clicks when hand-held mobile terminal to more excellent viewing distance and determines in the set interface of pop-up, infrared temperature sensor
101 detect face temperature at this time and are converted into corresponding voltage signal V1, are directly exported by output unit 102, by amplifying
Output reference voltage signal Vx(is preferably 1.8V after the amplification of unit 201,202 filtering voltage regulation of voltage regulation unit), it is more single by voltage
Member 203 stores the reference voltage signal and makes comparisons so as to subsequent.Distance detection unit 204 converts the reference voltage signal V
At reference viewing distance Lx and it is transmitted to display screen and shows.User can click preservation or cancel icon come keep reference watch away from
From Lx or reset.
In the present embodiment, the control module 30 includes Power Management Unit 301 and back light unit 302.
Viewing distance Lb smaller (face close to display screen), then the heat that infrared temperature sensor 101 can sense is bigger,
Accordingly face temperature is higher, and the voltage signal Vb of acquisition is bigger.Work as Vb > (Vx+0.5V), it is small to be equivalent to viewing distance Lb
In reference viewing distance Lx, the comparison result of output is high level H.The output of Power Management Unit 301 reduces signal and controls backlight
Unit 302 dims backlight illumination, stimulates eyes to avoid the backlight that viewing distance becomes clear when too close.
Viewing distance Lb bigger (face is far from display screen), then the heat that infrared temperature sensor 101 can sense is smaller,
Accordingly face temperature is lower, and the voltage signal Vb of acquisition is with regard to smaller.As Vb < (Vx+0.5V), it is equivalent to viewing distance Lb and is greater than
With reference to viewing distance Lx, the comparison result of output is low level L.The output of Power Management Unit 301 increases signal and controls backlight list
Member 302 lightens backlight illumination, does not see display screen to avoid viewing distance is too far.
If Vb in the range of (Vx ± 0.5V), exports the triangular wave TW of a cycle, Power Management Unit 301 is not defeated
Any signal controls back light unit 302 out, keeps current backlight illumination.
In the specific implementation, the preset term of reference may also be configured to multiple grades to indicate the distance of viewing distance
Degree.Assuming that Vx is 5V, middle reference range is 4.5V ~ 5.5V, and corresponding viewing distance is optimum distance, keeps current
Backlight illumination.First remote range is 2.5V ~ 4.4V, and corresponding viewing distance is slightly remoter than optimum distance, by backlight illumination
A gear is turned up.Second remote range is 1V ~ 2.4V, and corresponding viewing distance is farther out than optimum distance, bright by backlight
Two gears are turned up in degree.First nearly range is 5.6V ~ 7.5V, and corresponding viewing distance is than optimum distance slightly towards display
Backlight illumination is reduced a gear by screen.Second nearly range is 7.4V ~ 8.4V, corresponding viewing distance than most preferably away from
From closer to display screen, backlight illumination is reduced into two gears.And so on backlight or backlight is adjusted to most until closing
It is bright.The present embodiment is not construed as limiting the selection of range, can correspond to adjustment term of reference according to the actual situation.In the specific implementation,
Current practical viewing distance can also be converted into according to voltage signal Vb by distance detection unit 204 and shown.
Based on above-mentioned human-machine interface control device, the present invention also provides a kind of human-computer interface control methods, please refer to figure
4, the human-computer interface control method includes:
S100, temperature detecting module acquire a face temperature every preset time, and by face temperature transition at correspondence
Initial voltage signal；
The initial voltage signal is compared by S200, comparison module with preset term of reference, control module according to
Comparison result controls the bright dark of man-machine interface backlight.
Wherein, the step S100 is specifically included:
Step 101, infrared temperature sensor are for acquiring face temperature in real time and being converted into corresponding initial voltage signal；
Step 102, output unit are every the primary current initial voltage signal of preset time output.
In the step S200, the initial voltage signal is compared it with preset term of reference by comparison module
Before, it also needs to amplify the initial voltage signal, output voltage signal after voltage regulation filtering processing, the voltage signal and pre-
If term of reference be compared.
In the step S200, when voltage signal is compared by voltage comparison unit with preset term of reference, if
Voltage signal is less than term of reference, and the comparison result of output is low level, and the Power Management Unit output increases signal control
Back light unit lightens backlight illumination.
If voltage signal, in term of reference, the comparison result of output is the triangular wave of a cycle, Power Management Unit
Control back light unit keeps current backlight illumination.
If voltage signal is greater than term of reference, the comparison result of output is high level, and Power Management Unit output reduces letter
Number control back light unit backlight illumination is dimmed.
In conclusion the present invention is by acquiring a face temperature every preset time, and it is face temperature transition is pairs of
The initial voltage signal answered；The initial voltage signal is amplified and is compared after steady pressure treatment with preset term of reference
Compared with according to the bright dark of comparison result control man-machine interface backlight；The light and shade of backlight can be suitably adjusted according to actual viewing distance
Degree realizes the intelligent control of backlight；Can avoid inappropriate backlight illumination influences display effect, reduces the wound to eyes
Evil.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (6)
1. a kind of human-machine interface control device, which is characterized in that including temperature detecting module, comparison module and control module;
The temperature detecting module acquires a face temperature every preset time, and by face temperature transition at corresponding initial
Voltage signal；Comparison module, which amplifies the initial voltage signal, to be compared with preset term of reference after steady pressure treatment
Compared with control module controls the bright dark of man-machine interface backlight according to comparison result；
The control module includes Power Management Unit and back light unit；
Viewing distance, which is greater than, refers to viewing distance, and when comparison result is low level, the Power Management Unit output increases signal
Control back light unit lightens backlight illumination；
Viewing distance, which is less than, refers to viewing distance, and when comparison result is high level, the Power Management Unit output reduces signal
Control back light unit dims backlight illumination；
When comparison result is triangular wave, the Power Management Unit control back light unit keeps current backlight illumination；
The temperature detecting module includes infrared temperature sensor and output unit；
The infrared temperature sensor is for acquiring face temperature in real time and being converted into corresponding initial voltage signal, the output
Unit is every the primary current initial voltage signal of preset time output；
Infrared temperature sensor is arranged at the top of the front of mobile terminal；
It in the set interface of pop-up, clicks and determines, infrared temperature sensor detects face temperature at this time and is converted into corresponding to
Voltage signal, directly exported by output unit, output reference voltage signal and deposited after amplifying steady pressure treatment by comparison module
Store up the reference voltage signal.
2. human-machine interface control device according to claim 1, which is characterized in that the comparison module includes that amplification is single
Member, voltage regulation unit and voltage comparison unit:
The amplifying unit amplifies the initial voltage signal, then by defeated after voltage regulation unit progress voltage regulation filtering processing
Voltage signal is to voltage comparison unit out；
Voltage signal is compared by voltage comparison unit with preset term of reference, defeated if voltage signal is less than term of reference
Comparison result out is low level；If voltage signal, in term of reference, the comparison result of output is the triangular wave of a cycle；
If voltage signal is greater than term of reference, the comparison result of output is high level.
3. human-machine interface control device according to claim 2, which is characterized in that the comparison module further include:
Distance detection unit, for identifying face at a distance from display screen according to the voltage signal after amplification steady pressure treatment.
4. a kind of human-computer interface control method characterized by comprising
A, temperature detecting module acquires a face temperature every preset time, and by face temperature transition at corresponding initial electricity
Press signal；
B, the initial voltage signal is compared by comparison module with preset term of reference, and control module is according to comparison result
Control the bright dark of man-machine interface backlight；
The control module includes Power Management Unit and back light unit；
Viewing distance, which is greater than, refers to viewing distance, and when comparison result is low level, the Power Management Unit output increases signal
Control back light unit lightens backlight illumination；
Viewing distance, which is less than, refers to viewing distance, and when comparison result is high level, the Power Management Unit output reduces signal
Control back light unit dims backlight illumination；
When comparison result is triangular wave, the Power Management Unit control back light unit keeps current backlight illumination；
The step A is specifically included:
A1, infrared temperature sensor are for acquiring face temperature in real time and being converted into corresponding initial voltage signal；
A2, output unit are every the primary current initial voltage signal of preset time output；
Infrared temperature sensor is arranged at the top of the front of mobile terminal；
It in the set interface of pop-up, clicks and determines, infrared temperature sensor detects face temperature at this time and is converted into corresponding to
Voltage signal, directly exported by output unit, output reference voltage signal and deposited after amplifying steady pressure treatment by comparison module
Store up the reference voltage signal.
5. human-computer interface control method according to claim 4, which is characterized in that in the step B, comparison module will
Before the initial voltage signal is compared with preset term of reference, further includes: put to the initial voltage signal
Greatly, output voltage signal after voltage regulation filtering processing；The voltage signal is compared with preset term of reference.
6. human-computer interface control method according to claim 5, which is characterized in that in the step B, if voltage signal is small
In term of reference, the comparison result of output is low level；If voltage signal, in term of reference, the comparison result of output is one
The triangular wave in period；If voltage signal is greater than term of reference, the comparison result of output is high level.
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| TWI319680B (en) * | 2006-08-30 | 2010-01-11 | Face-detection-based remote-control system and method and face-detection-based remote-controllable multimedia system | |
| CN101295084B (en) * | 2007-04-25 | 2012-02-29 | 北京京东方光电科技有限公司 | Back light source brightness automatic regulating system and method |
| CN101299807A (en) * | 2007-04-30 | 2008-11-05 | 深圳Tcl新技术有限公司 | Display device capable of automatically regulating display parameter as well as implementation method thereof |
| US9605857B2 (en) * | 2010-08-11 | 2017-03-28 | Evergreen Telemetry Llc | Wireless sensors system and method of using same |
| CN104363643A (en) * | 2014-12-01 | 2015-02-18 | 上海斐讯数据通信技术有限公司 | Mobile terminal and display screen brightness adjusting method thereof |
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