CN104318911A - Head-up display luminance control circuit and method - Google Patents
Head-up display luminance control circuit and method Download PDFInfo
- Publication number
- CN104318911A CN104318911A CN201310615636.2A CN201310615636A CN104318911A CN 104318911 A CN104318911 A CN 104318911A CN 201310615636 A CN201310615636 A CN 201310615636A CN 104318911 A CN104318911 A CN 104318911A
- Authority
- CN
- China
- Prior art keywords
- value
- flat
- aobvious
- head
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000013341 scale-up Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000003464 asthenopia Diseases 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a head-up display luminance control circuit and method. The dead up display luminance control circuit comprises a processor used for calculating head-up display luminance values; the input end of the processor is used for being connected with the output end of a background light luminance sensor and a manual adjusting piece of a head-up display luminance rotary knob through an AD convertor; the output end of the processor is sequentially connected with a DA convertor and a high-voltage operational amplifier to be used for driving CRT grids. According to the head-up display luminance control circuit and method, a background light luminance value and a head-up display luminance rotary knob value serve as input variables and the corresponding luminance values are calculated by the processor according to different luminance control modes to be used for driving the CRT grids, thereby achieving intelligent control over the head-up display luminance. When the luminance values are calculated, different proportionality coefficient values and different constant values are selected according to the human eye visual characteristic curves and the different luminance control modes, so that accurate control over the head-up display luminance is achieved through manual or automatic adjustment; the problems that in the head-up display using process, the head-up display luminance is too dark in a day mode and is too bright in a night mode are solved; the using comfort and the man-machine work efficiency are provided.
Description
Technical field
The invention belongs to display driver technical field, be specifically related to a kind of flat aobvious intednsity circuit and control method.
Background technology
Head-up display (Head Up Display, HUD) is called for short flat aobvious, is the flight supplementary instrument generally used at present on aircraft.The meaning of looking squarely refers to that pilot does not need to bow the important information just can seeing that he needs.Head-up display appears on military aircraft the earliest, and reducing pilot needs to bow to check the frequency of instrument, avoids interrupting the notice of road ahead and losing the grasp to state consciousness (Situation Awareness).Because the convenience of HUD and can improve flight safety, airliner also follows up installation one after another, is progressively applied in automotive field now.
Because flat aobvious needs uses under different weather conditions, this just requires that flat aobvious display brightness can be adjusted to suitable brightness manually or automatically according to the change of external environmental light, flat aobvious use is made to possess comfortableness, meet ergonomic, therefore just need a kind of flat aobvious intednsity circuit and corresponding control method.
Flat aobvious brilliance control is a flat aobvious important performance, and the quality of brilliance control directly determines the flat aobvious comfortableness used.Under different weather conditions, manually regulate and automatically induction, while flat degree of highlighting should be able to meet observation needs of pilot and don't can because bright or excessively secretly cause pilot's visual fatigue.The input of brilliance control comprises the Value knobs value of the aobvious Value knobs generation of brightness value peace that background light level sensor produces, by to both superposition calculations in proportion, produce to put down and highlight angle value, control flat degree of highlighting, the key of therefore brilliance control is the computing method to background light level sensor values and Value knobs value.
Analog adder is used to calculate background light level value and Value knobs value in flat aobvious brilliance control at present, be difficult to realize carrying out fine adjustment according to different brilliance control patterns, cause flat degree of highlighting by day pattern to descend secretly or night mode was descended bright, cause pilot's visual fatigue, comfort reduces.
Summary of the invention
The object of this invention is to provide a kind of flat aobvious intednsity circuit, to solve the problem that existing mode is difficult to realize carrying out fine adjustment according to different brilliance control patterns, simultaneously by a kind of control method of flat degree of highlighting.
In order to realize above object, the present invention equals the technical scheme that aobvious intednsity circuit adopts: comprise for calculating the flat processor highlighting angle value, the input end of described processor is used for the manual adjustments of the aobvious Value knobs of output terminal peace being connected background light level sensor by AD converter respectively, for driving CRT grid after the output terminal of processor connects D/A converter and high voltage operational amplifier in turn.
The input end of described processor is provided with two-way and shows the corresponding AD converter connected of manual adjustments of Value knobs with the output terminal peace of background light level sensor respectively.
The present invention equals the technical scheme that aobvious brightness control method adopts: a kind of flat aobvious brightness control method, comprises the steps:
(1) gather the aobvious Value knobs of background light level sensor production background brightness values peace respectively and produce Value knobs value, send into processor;
(2) peaceful for the background light level value collected aobvious Value knobs generation Value knobs value is calculated by following formula by processor, produces actual the flat of output and highlights angle value;
B=m
i*K+n
i*A+C
i
Wherein, B represents that the flat of actual output highlights angle value, and K represents the Value knobs value of input, and A represents the background light level value of input, C
irepresent constant, m
irepresent the scale-up factor of Value knobs value, n
irepresent the scale-up factor of background light level value; C
i, m
iand n
ivalue under different brilliance control patterns is different.
(3) drive CRT grid according to the flat angle value that highlights of the actual output calculated, realize flat aobvious brilliance control.
Be input to processor after aobvious for background light level sensor production background brightness values peace Value knobs generation Value knobs value is converted to digital quantity respectively to calculate.
The flat angle value that highlights reality exported is converted to analog level signal and amplifies rear drive CRT grid through high pressure amplifier.
Flat aobvious intednsity circuit of the present invention and control method, with the aobvious Value knobs value of background light level value peace for input quantity, processor goes out corresponding brightness value rear drive CRT grid according to different brilliance control mode computation, realizes the Based Intelligent Control of flat degree of highlighting.The present invention is when calculating brightness value, according to human-eye visual characteristic curve and different brilliance control patterns, select different scalefactor value machine constant values, flat degree of highlighting manually or is automatically regulated realize accurately controlling, solve the flat degree of highlighting that occurs in flat aobvious use procedure by day pattern to descend secretly or night mode descended bright problem, improve the flat aobvious comfortableness used, improve ergonomic.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention equals aobvious intednsity circuit embodiment;
Fig. 2 is the process flow diagram that the present invention puts down aobvious brightness control method.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the schematic diagram that the present invention equals aobvious intednsity circuit embodiment, as seen from the figure, this circuit comprises for calculating the flat processor highlighting angle value, the input end of processor is used for the manual adjustments of the aobvious Value knobs of output terminal peace being connected background light level sensor by AD converter respectively, for driving CRT grid after the output terminal of processor connects D/A converter and high voltage operational amplifier in turn.
The processor of the present embodiment adopts arm processor, and the input end of processor is provided with two-way and shows the corresponding AD converter connected of manual adjustments of Value knobs with the output terminal peace of background light level sensor respectively.
Background light level sensor 1 exports the analog level of 0 ~ 5V according to background light level, input to AD converter 3, flat aobvious Value knobs exports the analog level of 0 ~ 5V according to manual adjustments position and inputs to AD converter 4, AD converter 3 and AD converter 4 export 10 bit digital quantity respectively and input to arm processor, arm processor calculates the digital quantity of rear output 10 to it and inputs to D/A converter by spi bus, this digital quantity is converted to the analog level of 0 ~ 5V and inputs to high pressure amplifier by D/A converter, high pressure amplifier carries out to this analog level the analog level driving CRT grid that anti-phase amplification exports-60V ~-15V afterwards, realize flat aobvious brilliance control.
As shown in Figure 2, the flat aobvious brightness control method of the present invention comprises the steps:
(1) gather the aobvious Value knobs of background light level sensor production background brightness values peace respectively and produce Value knobs value, send into processor;
(2) peaceful for the background light level value collected aobvious Value knobs generation Value knobs value is calculated by following formula by processor, produces actual the flat of output and highlights angle value;
B=m
i*K+n
i*A+C
i
Wherein, B represents that the flat of actual output highlights angle value, and K represents the Value knobs value of input, and A represents the background light level value of input, C
irepresent constant, m
irepresent the scale-up factor of Value knobs value, n
irepresent the scale-up factor of background light level value; C
i, m
iand n
ivalue under different brilliance control patterns is different.
(3) drive CRT grid according to the flat angle value that highlights of the actual output calculated, realize flat aobvious brilliance control.
In order to satisfied calculating needs, the aobvious Value knobs of background light level sensor production background brightness values peace is produced and is input to processor after Value knobs value is converted to digital quantity respectively by the AD converter of correspondence and calculates; The flat angle value that highlights reality exported is converted to analog level signal by D/A converter and amplifies rear drive CRT grid through high pressure amplifier.
The C of the present embodiment
i, m
iand n
iaccording to human-eye visual characteristic curve, the value under different brilliance control patterns is different, shown in specific as follows: by day under manual mode, B=m
1* K+n
1* A+C
1; Under night manual mode, B=m
2* K+n
2* A+C
2; By day under automatic mode, B=m
3* K+n
3* A+C
3; Under night automatic mode, B=m
4* K+n
4* A+C
4.C
1,2,3,4requirement according to aobvious starting brightness flat under four kinds of brilliance control patterns sets respectively, the scale-up factor m of Value knobs value
1,2,3,4with the scale-up factor n of background light level value
1,2,3,4requirement according to degree of highlighting variation range flat under different brilliance control pattern sets respectively, makes flat degree of highlighting by day under manual mode, can at 200cd/m
2~ 6500cd/m
2continuously adjustabe in scope; By day under automatic mode, can according to background light level at 200cd/m
2~ 6500cd/m
2continuously adjustabe in scope, simultaneously can manual fine-tuning; Under night manual mode, can at 0.2cd/m
2~ 300cd/m
2continuously adjustabe in scope; Under night automatic mode, can according to background light level at 0.2cd/m
2~ 300cd/m
2continuously adjustabe in scope.
First flat aobvious brightness control method of the present invention gathers background light level value and Value knobs value, and then according to current brilliance control pattern, select corresponding computing formula, the brightness value calculated is sent by spi bus and drives CRT grid.
It should be noted last that: above example is the non-limiting technical scheme of the present invention in order to explanation only, different instances parameter value is different, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that; Still can modify to the present invention or equivalent replacement, and not depart from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a flat aobvious intednsity circuit, it is characterized in that: comprise for calculating the flat processor highlighting angle value, the input end of described processor is used for the manual adjustments of the aobvious Value knobs of output terminal peace being connected background light level sensor by AD converter respectively, for driving CRT grid after the output terminal of processor connects D/A converter and high voltage operational amplifier in turn.
2. flat aobvious intednsity circuit according to claim 1, is characterized in that: the input end of described processor is provided with two-way and shows the corresponding AD converter connected of manual adjustments of Value knobs with the output terminal peace of background light level sensor respectively.
3. a flat aobvious brightness control method, is characterized in that, comprise the steps:
(1) gather the aobvious Value knobs of background light level sensor production background brightness values peace respectively and produce Value knobs value, send into processor;
(2) peaceful for the background light level value collected aobvious Value knobs generation Value knobs value is calculated by following formula by processor, produces actual the flat of output and highlights angle value;
B=m
i*K+n
i*A+C
i
Wherein, B represents that the flat of actual output highlights angle value, and K represents the Value knobs value of input, and A represents the background light level value of input, C
irepresent constant, m
irepresent the scale-up factor of Value knobs value, n
irepresent the scale-up factor of background light level value; C
i, m
iand n
ivalue under different brilliance control patterns is different;
(3) drive CRT grid according to the flat angle value that highlights of the actual output calculated, realize flat aobvious brilliance control.
4. flat aobvious brightness control method according to claim 3, is characterized in that: be input to processor after aobvious for background light level sensor production background brightness values peace Value knobs generation Value knobs value is converted to digital quantity respectively and calculate.
5. the flat aobvious brightness control method according to claim 3 or 4, is characterized in that: the flat angle value that highlights reality exported is converted to analog level signal and amplifies rear drive CRT grid through high pressure amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615636.2A CN104318911A (en) | 2013-11-27 | 2013-11-27 | Head-up display luminance control circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615636.2A CN104318911A (en) | 2013-11-27 | 2013-11-27 | Head-up display luminance control circuit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104318911A true CN104318911A (en) | 2015-01-28 |
Family
ID=52374134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615636.2A Pending CN104318911A (en) | 2013-11-27 | 2013-11-27 | Head-up display luminance control circuit and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104318911A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334780A (en) * | 2015-12-05 | 2016-02-17 | 中国航空工业集团公司洛阳电光设备研究所 | ARM controller for head up display |
| CN106097993A (en) * | 2016-06-06 | 2016-11-09 | 湖南中岳显控科技股份有限公司 | Highlighted high-resolution super-small image source drive circuit |
| CN106448617A (en) * | 2016-12-13 | 2017-02-22 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display brightness control method and circuit for compensating cathode ray tube difference |
| CN106875919A (en) * | 2015-12-14 | 2017-06-20 | 北京谊安医疗系统股份有限公司 | A kind of pulse width modulator control method of Anesthesia machine backlight |
| CN112327494A (en) * | 2020-10-29 | 2021-02-05 | 中国航空工业集团公司洛阳电光设备研究所 | Automatic brightness adjusting method for airborne head-up display |
| CN114035328A (en) * | 2021-11-23 | 2022-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | A brightness adjustment system for a head-up display screen |
| CN115713922A (en) * | 2022-11-18 | 2023-02-24 | 樊国超 | Method, device and system for adjusting brightness of light-emitting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270818A (en) * | 1992-09-17 | 1993-12-14 | Alliedsignal Inc. | Arrangement for automatically controlling brightness of cockpit displays |
| CN101574016A (en) * | 2007-01-05 | 2009-11-04 | 苹果公司 | Backlight and ambient light sensor system |
| CN101950538A (en) * | 2010-09-30 | 2011-01-19 | 彩虹集团公司 | Direct LED backlight device and driving method thereof |
| US20110102483A1 (en) * | 2009-11-05 | 2011-05-05 | Denso Corporation | Headup display device and method for indicating virtual image |
| US8487786B1 (en) * | 2010-09-01 | 2013-07-16 | Rockwell Collins, Inc. | Aircraft display system and method |
-
2013
- 2013-11-27 CN CN201310615636.2A patent/CN104318911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270818A (en) * | 1992-09-17 | 1993-12-14 | Alliedsignal Inc. | Arrangement for automatically controlling brightness of cockpit displays |
| CN101574016A (en) * | 2007-01-05 | 2009-11-04 | 苹果公司 | Backlight and ambient light sensor system |
| US20110102483A1 (en) * | 2009-11-05 | 2011-05-05 | Denso Corporation | Headup display device and method for indicating virtual image |
| US8487786B1 (en) * | 2010-09-01 | 2013-07-16 | Rockwell Collins, Inc. | Aircraft display system and method |
| CN101950538A (en) * | 2010-09-30 | 2011-01-19 | 彩虹集团公司 | Direct LED backlight device and driving method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 姚军财等: "周围环境对人眼对比度敏感视觉特性的影响", 《液晶与显示》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334780A (en) * | 2015-12-05 | 2016-02-17 | 中国航空工业集团公司洛阳电光设备研究所 | ARM controller for head up display |
| CN105334780B (en) * | 2015-12-05 | 2018-05-11 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of pingxian ARM controller |
| CN106875919A (en) * | 2015-12-14 | 2017-06-20 | 北京谊安医疗系统股份有限公司 | A kind of pulse width modulator control method of Anesthesia machine backlight |
| CN106097993A (en) * | 2016-06-06 | 2016-11-09 | 湖南中岳显控科技股份有限公司 | Highlighted high-resolution super-small image source drive circuit |
| CN106448617A (en) * | 2016-12-13 | 2017-02-22 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display brightness control method and circuit for compensating cathode ray tube difference |
| CN112327494A (en) * | 2020-10-29 | 2021-02-05 | 中国航空工业集团公司洛阳电光设备研究所 | Automatic brightness adjusting method for airborne head-up display |
| CN114035328A (en) * | 2021-11-23 | 2022-02-11 | 中国航空工业集团公司洛阳电光设备研究所 | A brightness adjustment system for a head-up display screen |
| CN115713922A (en) * | 2022-11-18 | 2023-02-24 | 樊国超 | Method, device and system for adjusting brightness of light-emitting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104318911A (en) | Head-up display luminance control circuit and method | |
| CN103192737B (en) | Drive control method for all-electric car | |
| CN107102442A (en) | A kind of HUD automatic brightness regulating device and method | |
| CN105523171B (en) | A kind of hybrid lateral control system of big aircraft | |
| CN102248922A (en) | Automobile backlight control system and control method thereof | |
| CN103935508B (en) | The auxiliary control method that a kind of unmanned vehicle declines and system | |
| CN105513563B (en) | A kind of digitlization flat display brightness control device | |
| CN105510003B (en) | The comprehensive assessment optimization method and system of light source vision and non-vision effect performance | |
| CN107864534A (en) | A kind of atmosphere circuit for lamp for automatically controlling brightness | |
| CN106710558A (en) | Driving circuit and liquid crystal display device | |
| CN112866373A (en) | Vehicle energy-saving driving guiding method and system | |
| CN203352900U (en) | Cockpit brightness dimming nonlinear circuit | |
| CN107901761B (en) | Vehicle speed display method and system | |
| CN104141784B (en) | A kind of loader electromotor and adjustable hydraulic torque converter Dynamic Matching device and method | |
| CN103514596A (en) | Method and device for processing image | |
| CN108053787A (en) | A kind of method of head-up display brightness self adaptive control | |
| CN109901458A (en) | The adaptive acquisition control system of radio emulation amount and method of ground proximity warning system | |
| CN206812929U (en) | A kind of implement porter control device of agricultural machinery | |
| CN217460742U (en) | Liquid crystal instrument brightness control system and engineering machinery | |
| CN103680469B (en) | The method of adjustment of the brightness and contrast of a kind of liquid crystal display and liquid crystal display thereof | |
| CN101923317B (en) | Real-time dynamic adjustment method for sensitivity voltage of color selector | |
| CN114527785A (en) | Method for realizing air pressure height keeping and given height automatic control during field pressure adjustment | |
| CN201107324Y (en) | New type motor vehicle speed meter | |
| CN105905121B (en) | A method of control train limiting operation under lower-speed state | |
| CN106448617A (en) | Head-up display brightness control method and circuit for compensating cathode ray tube difference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |