CN106875919A - A kind of pulse width modulator control method of Anesthesia machine backlight - Google Patents
A kind of pulse width modulator control method of Anesthesia machine backlight Download PDFInfo
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- CN106875919A CN106875919A CN201510927685.9A CN201510927685A CN106875919A CN 106875919 A CN106875919 A CN 106875919A CN 201510927685 A CN201510927685 A CN 201510927685A CN 106875919 A CN106875919 A CN 106875919A
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- backlight
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Abstract
The present invention relates to a kind of PWM control methods of Anesthesia machine backlight, methods described is included：Step 101) backlight illumination is set into some grade points and corresponding index value, wherein, the grade point is luminance data values, the bright-dark degree for representing brightness, the index value is the data value of several lookups, and each index value corresponds to a grade point；Step 102) grade point and index value of setting are stored in registration table；Step 103) backlight drive obtain registration table key assignments, according to registration table store index value match backlight brightness values；If index value in the rate range for setting, does not light backlight, and the call number of default value is stored in into registration table using default value；If index value performs following steps in the rate range for setting；Step 104) the corresponding backlight illumination grade point of search index value and the parameter of enhanced pulse width modulator ePWM is set, change the dutycycle of pulse width modulator PWM and then control backlight brightness simultaneously to show.
Description
Technical field
The present invention relates to method for controlling backlight thereof, and in particular to a kind of pulse width modulator control method of Anesthesia machine backlight.
Background technology
WinCE system display backlight controls are usually GPIO level modes, only turn on/off state.Can not adjust
Brightness, limitation is big.Also have using PWM control backlights, but be confined to adjust backlight by control panel,
It is more complicated.
The content of the invention
It is an object of the present invention in order to overcome above mentioned problem, the present invention to provide a kind of pulsewidth of Anesthesia machine backlight and adjust
Device control method processed.
To achieve these goals, the present invention provides a kind of pulse width modulator control method of Anesthesia machine backlight, described
Method is included：
Step 101) backlight illumination is set into some grade points and the index value corresponding with each grade point, wherein,
The grade point is luminance data values, and the bright-dark degree for representing brightness, the index value is used for several lookups
Data value, and each index value correspondence one grade point.
Step 102) grade point and index value of setting are stored in registration table.
Step 103) backlight drive obtain registration table key assignments, according to registration table store index value match backlight illumination
Value；If index value lights backlight not in the rate range for setting using default value, and by the index of default value
Number it is stored in registration table；If index value performs following steps in the rate range for setting.
Step 104) the corresponding backlight illumination grade point of search index value and enhanced pulse width modulator ePWM is set
Parameter, change the dutycycle of pulse width modulator PWM and then control backlight brightness simultaneously to be shown.
Optionally, above-mentioned steps 104) also include afterwards：Change backlight index value, and the backlight index value to changing
Judged if index value effectively if change backlight brightness values, and the index value and brightness value of change are preserved again
In registration table.
Above-mentioned steps 104) also include afterwards：Then the lightness of index value correspondence is also modified the brightness value of modification backlight.
Above-mentioned technical proposal, the corresponding index value of night mode is that 10 and PWM controls backlight is most bright；Day mode
Corresponding index value is that 5 and PWM controls backlight is soft.
Such scheme finely tunes PWM backlight illuminations using shuttle button.
When Anesthesia machine uses WinCE7.0 systems, pulse is exported by the ePWM of AM33x processors and realizes showing
The PWM controls of display screen backlight several brightness degrees.
Compared with prior art, the advantage of the invention is that：
Technical scheme controls backlight using ePWM (enhanced pulse width modulator), exports 10 grades of backlights,
Realize that brightness degree value and index value are controlled by registration table, complete the setting of Anesthesia machine backlight great-jump-forward with fine setting feature.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of control method provided in an embodiment of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
The present invention provides a kind of PWM control methods of Anesthesia machine backlight, and methods described is included：
Step 101) backlight illumination is set into some grade points and the index value corresponding with each grade point, wherein,
The grade point to be luminance data values, for several search by the bright-dark degree for representing brightness, the index value
Data value, and each index value one grade point of correspondence.
Step 102) grade point and index value of setting are stored in registration table.
Step 103) backlight drive obtain registration table key assignments, according to registration table store index value match backlight illumination
Value；If index value lights backlight not in the rate range for setting using default value, and by the index of default value
Number it is stored in registration table；If index value performs following steps in the rate range for setting.
Step 104) the corresponding backlight illumination grade point of search index value and enhanced pulse width modulator ePWM is set
Parameter, change the dutycycle of pulse width modulator PWM and then control backlight brightness simultaneously to be shown.
Optionally, above-mentioned steps 104) also include afterwards：Change backlight index value, and the backlight index value to changing
Judged if index value effectively if change backlight brightness values, and the index value and brightness value of change are preserved again
In registration table.
Above-mentioned steps 104) also include afterwards：Then the lightness of index value correspondence is also modified the brightness value of modification backlight.
Above-mentioned technical proposal, the corresponding index value of night mode is that 10 and PWM controls backlight is most bright；Day mode
Corresponding index value is that 5 and PWM controls backlight is soft.
Such scheme finely tunes PWM backlight illuminations using shuttle button.
When Anesthesia machine uses WinCE7.0 systems, pulse is exported by the ePWM of AM33x processors and realizes showing
The PWM controls of display screen backlight several brightness degrees.
Embodiment
A kind of ePWM output pulses for passing through AM33x processors in WinCE7.0 systems are described herein, realize aobvious
The PWM control methods of 10 brightness degrees of display screen backlight, Anesthesia machine UI softwares control PWM duty cycle, will carry on the back
Optical parameter is stored in registration table, it is ensured that after system reboot, and the brightness degree of setting is still effective.
Anesthesia machine is used at operating room or emergent scene, to ensure the normal display under varying environment, is proposed and is designed
Display backlight brightness adjustment scheme, is easy to medical personnel's intuitive operation, in order to avoid cause the collimation error and tired.
This programme realizes operation readiness, selects daytime, black to carry out great-jump-forward backlight at UI interfaces, meets urgent feelings
Used under condition, carrying out 10 grades of fine settings by shuttle button on this basis realizes best image.
The flow of the method that the present invention is provided is as shown in figure 1, be specially：
1st, 10 grade points of backlight illumination and index value storage cannot be lighted aobvious in registration table if registration table failure is read
Display screen.
2nd, backlight drive obtains registration table key assignments, according to the index value that registration table is stored, matches backlight brightness values.If index
Value then lights backlight not in 10 rate ranges using default value, and the call number of default value is stored in into registration table.
3rd, backlight index value retrieves backlight illumination grade point in effective range, sets ePWM parameters, changes PWM
Dutycycle, controls backlight brightness.Backlight index value after change is stored in registration table.If machine restarts
Then this value makes backlight maintain these level brightness.
4th, UI softwares adjustment backlight index value, backlight brightness values are changed if index value if effective range, and by index value
Registration table is stored in brightness value.
5th, backlight brightness values and index value are maintained in registration table, are indexed if 10 grades of brightness values of backlight of UI software modifications
Value correspondence lightness is modified.
6th, UI software interfaces great-jump-forward setting, night mode manipulative indexing value 10, PWM controls backlight is most bright；Daytime
Pattern manipulative indexing value 5, PWM controls backlight is soft；On this basis PWM backlights are finely tuned using shuttle button
Brightness.
The partial enlarged drawing of above-mentioned all units of cable sychronisation 32 is as shown in Figure 3.
It should be noted that the embodiment of present invention described above and not limit.Those skilled in the art
It should be appreciated that it is any to the modification of technical solution of the present invention or equivalent substitute without departure from technical solution of the present invention
Spirit and scope, it all should cover in scope of the presently claimed invention.
Claims (6)
1. a kind of pulse width modulator control method of Anesthesia machine backlight, methods described is included：
Step 101) backlight illumination is set into some grade points and the index value corresponding with each grade point, wherein,
The grade point is luminance data values, and the bright-dark degree for representing brightness, the index value is used for several lookups
Data value, and each index value correspondence one grade point；
Step 102) grade point and index value of setting are stored in registration table；
Step 103) backlight drive obtain registration table key assignments, according to registration table store index value match backlight illumination
Value；If index value lights backlight not in the rate range for setting using default value, and by the index of default value
Number it is stored in registration table；If index value performs following steps in the rate range for setting；
Step 104) the corresponding backlight illumination grade point of search index value and enhanced pulse width modulator ePWM is set
Parameter, change the dutycycle of pulse width modulator PWM and then control backlight brightness simultaneously to be shown.
2. PWM control methods of Anesthesia machine backlight according to claim 1, it is characterised in that the step
It is rapid 104) also to include afterwards：
Change backlight index value, and to change backlight index value judged if index value effectively if change backlight
Brightness value, and the index value and brightness value of change are stored in registration table again.
3. PWM control methods of Anesthesia machine backlight according to claim 1, it is characterised in that institute
State step 104) also include afterwards：
Then the lightness of index value correspondence is also modified the brightness value of modification backlight.
4. PWM control methods of Anesthesia machine backlight according to claim 1, it is characterised in that
The corresponding index value of night mode is that 10 and PWM controls backlight is most bright；
The corresponding index value of day mode is that 5 and PWM controls backlight is soft.
5. PWM control methods of Anesthesia machine backlight according to claim 1, it is characterised in that using wearing
Shuttle button finely tunes PWM backlight illuminations.
6. PWM control methods of Anesthesia machine backlight according to claim 1, it is characterised in that work as anesthesia
When machine uses WinCE7.0 systems, if exporting pulse by the ePWM of AM33x processors realizes display backlight
The dry PWM controls of brightness degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510927685.9A CN106875919A (en) | 2015-12-14 | 2015-12-14 | A kind of pulse width modulator control method of Anesthesia machine backlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927685.9A CN106875919A (en) | 2015-12-14 | 2015-12-14 | A kind of pulse width modulator control method of Anesthesia machine backlight |
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| CN106875919A true CN106875919A (en) | 2017-06-20 |
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| CN201510927685.9A Pending CN106875919A (en) | 2015-12-14 | 2015-12-14 | A kind of pulse width modulator control method of Anesthesia machine backlight |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113840418A (en) * | 2021-11-16 | 2021-12-24 | 全鼎电子(苏州)有限公司 | Wake-up phototherapy unit with segmented lighting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012556A1 (en) * | 2002-07-17 | 2004-01-22 | Sea-Weng Yong | Method and related device for controlling illumination of a backlight of a liquid crystal display |
| CN1786778A (en) * | 2004-12-06 | 2006-06-14 | 奇菱科技股份有限公司 | Brightness control device and method for intelligent display panel |
| CN1878190A (en) * | 2005-06-09 | 2006-12-13 | 三星电子株式会社 | Portable terminal capable of controlling backlight and method for controlling backlight thereof |
| CN101876458A (en) * | 2009-04-28 | 2010-11-03 | 乐金电子(天津)电器有限公司 | Circuit for adjusting microwave oven display screen brightness |
| CN104318911A (en) * | 2013-11-27 | 2015-01-28 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display luminance control circuit and method |
-
2015
- 2015-12-14 CN CN201510927685.9A patent/CN106875919A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012556A1 (en) * | 2002-07-17 | 2004-01-22 | Sea-Weng Yong | Method and related device for controlling illumination of a backlight of a liquid crystal display |
| CN1786778A (en) * | 2004-12-06 | 2006-06-14 | 奇菱科技股份有限公司 | Brightness control device and method for intelligent display panel |
| CN1878190A (en) * | 2005-06-09 | 2006-12-13 | 三星电子株式会社 | Portable terminal capable of controlling backlight and method for controlling backlight thereof |
| CN101876458A (en) * | 2009-04-28 | 2010-11-03 | 乐金电子(天津)电器有限公司 | Circuit for adjusting microwave oven display screen brightness |
| CN104318911A (en) * | 2013-11-27 | 2015-01-28 | 中国航空工业集团公司洛阳电光设备研究所 | Head-up display luminance control circuit and method |
Non-Patent Citations (2)
| Title |
|---|
| 吴国伟: "《嵌入式操作系统原理及应用开发》", 31 March 2007 * |
| 尤凤翔: "《LED照明设计与封装技术应用》", 31 October 2015, 世界图书出版广东有限公司 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113840418A (en) * | 2021-11-16 | 2021-12-24 | 全鼎电子(苏州)有限公司 | Wake-up phototherapy unit with segmented lighting |
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Application publication date: 20170620 |