CN102681945B - Method for implementing embedded type pointer virtual instrument - Google Patents
Method for implementing embedded type pointer virtual instrument Download PDFInfo
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- CN102681945B CN102681945B CN201210136036.3A CN201210136036A CN102681945B CN 102681945 B CN102681945 B CN 102681945B CN 201210136036 A CN201210136036 A CN 201210136036A CN 102681945 B CN102681945 B CN 102681945B
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Abstract
The invention discloses a method for implementing an embedded type pointer virtual instrument. The method at least comprises the steps of producing a digital dial picture and instrument pictures of different angles; saving pixel value data of the produced digital dial picture into a storage; acquiring digital pointer structure data of different angles by using instrument pictures of different angles and saving the digital pointer structure data into the storage; displaying a pointer-free data dial picture which is read out from the storage and enabling the picture to serve as a background; enabling a dynamic instrument to start displaying at a current angle position of a pointer; acquiring real-time electrical information which is required to be displayed by the pointer; determining the corresponding pointer in a pointer picture library according to the electrical information which is required to be indicated by the pointer; and enabling a system to read out pointer structural body data of the pointer at corresponding positions from the storage, and displaying a pointer picture corresponding to the pointer. According to the method, only a few effective data of a large amount of pointer pictures are required to be stored, data memory quantity is greatly reduced, and a large amount of system internal memory is saved.
Description
Technical field
The present invention relates to a kind of virtual instrument implementation method, be specifically related to a kind of embedded pointer virtual instrument implementation method.
Background technology
The introducing of embedded technology makes instrument and meter towards the future development of automation and intelligentification, and this has become a kind of trend of current instrument system.Nowadays, embedded type virtual instrument is also closely bound up with people's productive life, such as automotive field, avionics system cockpit display field etc.Traditional embedded pointer virtual instrument is realized by figure layer substitute mode and software algorithm analog form.Software algorithm analog form is realized virtual instrument programmed algorithm more complicated, shows that real-time causes flating not, and dynamic effect cannot be accomplished true to nature, and display frame is more coarse.It is dial plate and the pointer picture that needs to store in advance pointer instrument in internal memory that figure layer is replaced implementation, static dial plate image is as background, the pointer picture of motion is used as prospect, by continuous, by pointer foreground picture, replaces the dynamic rotary effect that virtual instrument is realized in dial plate background picture pointer position.Traditional embedded pointer virtual instrument implementation can reach rendering effect true to nature, but prerequisite is the variation corresponding to each pointer angle, all needs to store a two field picture.If once need the each rotation of pointer, pointer traversal 360 deg just need to be stored the picture of 360 pointer different angles in advance in internal memory.From just finding out that needed memory span is huge here, the embedded system of the memory-limited that this affects for factors such as being subject to cost, volume, a great challenge beyond doubt.
Summary of the invention
For the deficiency of prior art, the present invention is a kind of embedded pointer virtual instrument implementation method, so as to save Installed System Memory, enhancing system shows real-time, makes that instrument display effect is more true to nature, exhibit stabilization improves.
In order to realize above-mentioned task, the present invention adopts following technical scheme: a kind of embedded pointer virtual instrument implementation method, is characterized in that: at least comprise the steps:
Step 100: make digital dial plate picture and the instrument picture that meets different angles;
Step 101: the pixel value data of the digital dial plate picture of making are deposited in storer;
Step 102: use the instrument picture of different angles to obtain the pointer-digit structured data that meets different angles, and deposited in storer;
Step 103: the pointer-free data dial plate Image Display reading from storer as a setting; System only need be called once, because background is static, does not need dynamically to refresh in real time;
Step 104: dynamically instrument starts in current angle position from pointer to show;
Step 105: obtain the telecommunications breath that needs in real time pointer to show; From the external world, obtain the analog quantity information that needs instrument to show, by A/D, convert analog quantity information is converted to digital information, the telecommunications breath that the pointer that can obtain needing is indicated;
Step 106: according to needing the telecommunications breath of pointer indication to determine corresponding pointer picture library pointer;
Step 107: reading pointer is in the pointer structure volume data of correspondence position from storer for system, and the pointer picture that pointer is corresponding shows.
Described step 100 is to make needed digital dial plate picture and the instrument picture that meets different angles by GLstudio tool software.
It is to use MATLAB software to obtain the rgb pixel Value Data of needed dial plate picture that described step 101 deposits the pixel value data of the digital dial plate picture of making in storer in.
Described step 102 pointer data storage format is to comprise: the data 502 when maximum angle is arrived in the data 501 during initial angle, needle deflection, all angle-datas 506 of pointer traversal, the storage of pointer picture only need to store the pixel number certificate that pixel changes.The position of the pixel changing when pointer is rotated to each angle and change after pixel value, with the form of structure array, leave in storer.
The form deposit method of described structure array is:
A) obtain the pixel value that a width does not have the instrument picture of pointer;
B) obtain the pixel value of width pointer instrument picture at an arbitrary position;
C) use MATLAB software to find out number and the position of the different pixel of all pixel values in two width images, in two width images, the different pixel of pixel value is the residing point of pointer;
D) number of statistical pixel values difference is, the position of each pixel and pixel value;
E) create structure struct point { int m; Int a[] [2]; Int rgb[] [3] }; Wherein, m (503) is the number of pixel value difference, takies a byte in internal memory; A[] [2] (504) record m pixel in the residing position of picture in its entirety, i.e. coordinate X, Y, each pixel takies two bytes; Rgb[] R, G, the B value of m pixel of [3] (505) storages, each pixel takies three bytes; When if pointer is single gray-scale value, the value of each pixel is identical and be same fixed value.
Described step 104 performing step is as follows:
Step 701: reading pointer is in the structure data of initial angle position from storer;
Step 702: from structure data a[] read a pixel in the residing positional information of picture in its entirety [2], i.e. coordinate X, Y, to determine the position that needs the pixel that shows;
Step 703: from structure data rgb[] 3] read the pixel value information of this pixel, i.e. the R of pixel, G, B value, and give the coordinate position of above-mentioned appointment;
Step 704: the number information of the pixel that reading pointer need to show when initial position from structure data m;
Step 705: whether judgement needs the pixel showing to show; Be execution step 707; No, execution step 706;
Step 706: read the next information that needs the pixel of demonstration from structure data; Return to step 702;
Step 707: all pixels of pointer when initial position show complete, EOP (end of program).
Described step 105 is from the external world, to obtain the analog quantity information that needs instrument to show, by A/D, is converted analog quantity information is converted to digital information, the telecommunications breath that the pointer that can obtain needing is indicated.
The invention has the advantages that: for the embedded system of memory-limited, by storing a small amount of picture element, just can realize the dynamic display interface of pointer virtual instrument abundant, true to nature.The storage mode of simple structure array simultaneously, the program comparision that makes to realize dynamic demonstration is simple, highly versatile, can also improve stability and the real-time of demonstration.It has stronger versatility, can be widely used in the virtual instrument of various range abilities on various embedded platforms.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described in further detail:
Fig. 1 is that the dynamic pointer of the embodiment of the present invention 1 is realized program flow diagram;
Fig. 2 is that the dynamic pointer of the embodiment of the present invention 1 is realized program flow diagram;
Fig. 3 is dial plate of the present invention and pointer picture schematic diagram;
Fig. 4 is the pointer image data storage format of traditional approach;
Fig. 5 is pointer data storage format of the present invention;
Fig. 6 is the schematic diagram that traditional approach pointer shows;
Fig. 7 is pointer Display Realization process flow diagram of the present invention.
Embodiment
The present invention has two kinds of embodiments, is specially embodiment 1 and embodiment 2.The implementation that embodiment 1 dynamically shows for the embedded pointer virtual instrument of the present invention, embodiment 2 can be used as user and in general embedded system, realizes the subroutine of pointer virtual instrument.
Embodiment 1:
With reference to Fig. 1, the dynamic pointer of the embodiment of the present invention 1 is realized program flow diagram.Fig. 3, is dial plate of the present invention and pointer picture schematic diagram, and 301 is dial plate picture, and 302 is pointer picture.The present invention is all applicable for any colour picture, supposes that dial plate dimension of picture is 100*100 in the present embodiment, and pointer dimension of picture is 60*60.
An embedded pointer virtual instrument implementation method, is characterized in that: at least comprise the steps:
Step 100: make digital dial plate picture and the instrument picture that meets different angles;
Here use GLstudio tool software to make needed digital dial plate picture and the instrument picture that meets different angles.
Step 101: the pixel value data of the digital dial plate picture of making are deposited in storer; Use MATLAB software to obtain the rgb pixel Value Data of needed dial plate picture, each pixel in picture has changed into a concrete numerical value, the pixel value of each color channel of RGB adopts 8 scale-of-two to represent, the denotable integer range of each byte is 0 ~ 255, and each pixel takies three bytes in internal memory; Because data volume is larger, can not manually adjust, so adopt Format adjusting program of C language compilation, by this program, be adjusted to the array form of wanting, so just a width dial plate picture, the form with array deposits in storer;
Step 102: use the instrument picture of different angles to obtain the pointer-digit structured data that meets different angles, and deposited in storer; The obtaining of pointer data of the present invention, storage means and storage format and traditional approach are very different;
With reference to Fig. 4, the pointer image data storage format of traditional approach.Image data is stored by row in internal memory, 401 is data line totally 60 pixels of pointer picture, 402 is the first trip datarams address of the first width pointer picture, 403 RGB are that the pixel value data of the pixel of storage take three bytes, 404 is the first width pointer image data totally 60 row, and 405 is last pointer picture totally 60 row.The maximum range of supposing instrument is M, and minimum resolution is S, and gauge pointer has N kind state: N=M/S, and at this moment user opens pointer picture according to own actual needs storage N.Here the range of supposing instrument is 180, and minimum resolution is 2, and now gauge pointer has 90 (N=90) kind state.Storing 90 pointer picture committed memory spaces is 60 * 60 * 3 * 90=972000 ≈ 972KB, and the memory headroom that storing in a conventional manner pointer data needs is 972KB, and the storage of pointer picture has taken a large amount of memory headrooms it can be seen.
With reference to Fig. 5, pointer data storage format of the present invention.501 is the data of pointer when initial angle, and 502 is the data of needle deflection when the maximum angle, the 506 all angle-datas that travel through for pointer.The storage of pointer picture only need to store the pixel number certificate that pixel changes, and the position of the pixel changing when pointer is rotated to each angle and pixel value leave in storer with the form of structure array.Concrete grammar is:
A) obtain the pixel value that a width does not have the instrument picture of pointer;
B) obtain the pixel value of width pointer instrument picture at an arbitrary position;
C) use MATLAB software to find out number and the position of the different pixel of all pixel values in two width images, in two width images, the different pixel of pixel value is the residing point of pointer;
D) number of statistical pixel values difference is, the position of each pixel and pixel value;
E) create structure struct point { int m; Int a[] [2]; Int rgb[] [3] }; Wherein, m (503) is the number of pixel value difference, takies a byte in internal memory; A[] [2] (504) record m pixel in the residing position of picture in its entirety, i.e. coordinate X, Y, each pixel takies two bytes; Rgb[] R, G, the B value of m pixel of [3] (505) storages, each pixel takies three bytes; When if pointer is single gray-scale value, the value of each pixel is identical and be same fixed value, and structure just can design struct point { int m like this; Int a[] [2]; Int rgb}; Wherein, m, a[] [2], with the above, rgb is that the fixed value of a byte can just give assignment when program initialization, all pixels share this pixel value in internal memory, are only used in and in internal memory, take a byte; The structure of design is just simpler like this, and memory data output still less.
A structure variable can only be deposited a pointer image data, all needs to store, so also need to construct a structural style array struct point s[for pointer in different angles], so just can store the picture of 90 different pointer angles.
Calculate committed memory situation in this case: m takies a byte, a[in a structure] [2] take two bytes, rgb[] [3] take three bytes.If there are at most 200 pixels to change at every turn, store 90 shared memory headrooms of pointer picture and be (1+200 * (2+3)) * 90=90900 ≈ 91KB, the memory space of pointer picture is about 1/10 of traditional approach it can be seen, has saved greatly Installed System Memory.When if pointer is single gray-scale value, storing 90 shared memory headrooms of pointer picture is (1+1+200 * 2) * 90=36180 ≈ 36KB, has saved larger storage space, and superiority is more obvious.
Step 103: the pointer-free data dial plate Image Display reading from storer as a setting; System only need be called once, because background is static, does not need dynamically to refresh in real time;
Step 104: dynamically instrument starts in current angle position from pointer to show;
With reference to Fig. 6 A, Fig. 6 B, the schematic diagram that traditional approach pointer shows.Dial plate shows does not as a setting need dynamic refresh, and pointer picture is as prospect.When showing, with the pointer image data of Difference angles, replace the data of dial plate background pointer present position, 601 is any three width pointer pictures, 602 display positions of three width pointer pictures in dial plate for this reason.Pointer is replaced with the different pointer pictures that are stored in internal memory when different angles, by successively foreground picture being replaced, just can realize dynamic display effect.
With reference to Fig. 7, pointer Display Realization process flow diagram of the present invention.Performing step is as follows:
1) 701: from storer, reading pointer is in the structure data of initial angle position;
2) 702: from structure data a[] [2], read a pixel in the residing positional information of picture in its entirety, i.e. coordinate X, Y, to determine the position that needs the pixel that shows;
3) 703: from structure data rgb[] 3], read the pixel value information of this pixel, i.e. the R of pixel, G, B value, and give the coordinate position of above-mentioned appointment;
4) 704: the number information of the pixel that reading pointer need to show when initial position from structure data m;
5) 705: whether judgement needs the pixel showing to show; Be execution step 707; No, execution step 706;
6) 706: from structure data, read the next information that needs the pixel of demonstration, return to step 702;
7) 707: all pixels of pointer when initial position show complete, EOP (end of program).
Step 105: obtain the telecommunications breath that needs in real time pointer to show; From the external world, obtain the analog quantity information that needs instrument to show, by A/D, convert analog quantity information is converted to digital information, the telecommunications breath that the pointer that can obtain needing is indicated;
Step 106: according to needing the telecommunications breath of pointer indication to determine corresponding pointer picture library pointer;
Step 107: reading pointer is in the pointer structure volume data of correspondence position from storer for system, and the pointer picture that pointer is corresponding shows;
Step 108: system call time delay subroutine, by pointer Image Display a period of time;
Step 109: program is returned and again detected next telecommunications breath that pointer needs constantly, and program turns back to step 105.
Embodiment 2: with embodiment 1 difference, be exactly, after the picture of the complete real-time pointer position of program display, just finish, the pointer change information of cycle detection outside is realized the subroutine of pointer virtual instrument so embodiment 2 can be used as user in general embedded system always.(with reference to Fig. 2)
Step 200: executive mode is with step 100;
Step 201: executive mode is with step 101;
Step 202: executive mode is with step 102;
Step 203: executive mode is with step 103;
Step 204: executive mode is with step 104;
Step 205: executive mode is with step 105;
Step 206: executive mode is with step 106;
Step 207: executive mode is with step 107;
Step 208: pointer position Image Display completes in real time, EOP (end of program).
As everyone knows, for pointer instrument, can be divided into two parts: dial plate and pointer.Dial plate is static, and pointer moves.Dial plate refreshes in real time without every frame later in adding scene to, no longer needs more operation, and pointer needs constantly to upgrade, and can realize dynamic display effect.The implementation method of traditional embedded pointer virtual instrument is the picture in its entirety data that change corresponding to each pointer angle need to be stored in storer, can bring huge memory space like this.And in fact when gauge pointer deflects, can't there is any variation in the dial plate overall background of instrument, entire image only has the pixel value of few pixel to change, the position of the pixel that these change is the residing position of pointer just, therefore only needs position and the pixel value of the pixel of record pointer present position.Position and the pixel value of few vicissitudinous pixel only need to store a two field picture when data are stored in, give up a large amount of unnecessary redundant datas.With respect to entire image, vicissitudinous pixel is only a few after all, and this is highly profitable for saving Installed System Memory.For dial plate image data, in internal memory, open up one section of connected storage, a width dial plate image data is stored in internal memory with array form.Each width pointer image data, stores with the form of structure, the number that the data that need storage are vicissitudinous pixel, position and the pixel value of pixel.One group of image data with the form storage pointer of structure array when the different angles.When showing first from internal memory reading instrument dial plate image data as display background, the pixel number that then reading pointer need to show when different angles from structure array data, location of pixels and pixel value data.The pixel value data that replace same position in dial plate background by the pointer pixel value data of prospect, just can make all angles that need demonstration of pointer traversal by loop statement, can realize the dynamic effect of pointer instrument.
Claims (4)
1. an embedded pointer virtual instrument implementation method, is characterized in that: at least comprise the steps:
Step 100: make digital dial plate picture and the instrument picture that meets different angles;
Step 101: the pixel value data of the digital dial plate picture of making are deposited in storer;
Step 102: use the instrument picture of different angles to obtain the pointer-digit structured data that meets different angles, and deposited in storer;
Step 103: the pointer-free data dial plate Image Display reading from storer as a setting; System only need be called once, because background is static, does not need dynamically to refresh in real time;
Step 104: dynamically instrument starts in current angle position from pointer to show;
Step 105: obtain the telecommunications breath that needs in real time pointer to show; From the external world, obtain the analog quantity information that needs instrument to show, by A/D, convert analog quantity information is converted to digital information, the telecommunications breath that the pointer that can obtain needing is indicated;
Step 106: according to needing the telecommunications breath of pointer indication to determine corresponding pointer picture library pointer;
Step 107: reading pointer is in the pointer structure volume data of correspondence position from storer for system, and the pointer picture that pointer is corresponding shows;
Described step 102 pointer data storage format is to comprise: the data (502) when maximum angle is arrived in data during initial angle (501), needle deflection, all angle-datas (506) of pointer traversal, the storage of pointer picture only need to store the pixel number certificate that pixel changes, the position of the pixel changing when pointer is rotated to each angle and pixel value, leave in storer with the form of structure array;
The form deposit method of described structure array is:
Obtaining a width does not have the pixel value of the instrument picture of pointer;
Obtain the pixel value of width pointer instrument picture at an arbitrary position;
Use MATLAB software to find out number and the position of the different pixel of all pixel values in two width images, in two width images, the different pixel of pixel value is the residing point of pointer;
The number of statistical pixel values difference, the position of each pixel and pixel value;
E) create structure struct point { int m; Int a[] [2]; Int rgb[] [3] }; Wherein, m (503) is the number of pixel value difference, takies a byte in internal memory; A[] [2] (504) record m pixel in the residing position of picture in its entirety, i.e. coordinate X, Y, each pixel takies two bytes; Rgb[] R, G, the B value of m pixel of [3] (505) storages, each pixel takies three bytes; When if pointer is single gray-scale value, the value of each pixel is identical and be same fixed value.
2. a kind of embedded pointer virtual instrument implementation method according to claim 1, is characterized in that: described step 100 is to make needed digital dial plate picture and the instrument picture that meets different angles by GLstudio tool software.
3. a kind of embedded pointer virtual instrument implementation method according to claim 1, is characterized in that: it is to use MATLAB software to obtain the rgb pixel Value Data of needed dial plate picture that described step 101 deposits the pixel value data of the digital dial plate picture of making in storer in.
4. a kind of embedded pointer virtual instrument implementation method according to claim 1, is characterized in that: described step 104 performing step is as follows:
Step 701: reading pointer is in the structure data of initial angle position from storer;
Step 702: from structure data a[] read a pixel in the residing positional information of picture in its entirety [2], i.e. coordinate X, Y, to determine the position that needs the pixel that shows;
Step 703: from structure data rgb[] read the pixel value information of this pixel [3], i.e. the R of pixel, G, B value, and give the coordinate position of above-mentioned appointment;
Step 704: the number information of the pixel that reading pointer need to show when initial position from structure data m;
Step 705: whether judgement needs the pixel showing to show; Be execution step 707; No, execution step 706;
Step 706: read the next information that needs the pixel of demonstration from structure data; Return to step 702;
Step 707: all pixels of pointer when initial position show complete, EOP (end of program).
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| CN106406360B (en) * | 2016-08-31 | 2019-11-08 | 惠州华阳通用电子有限公司 | A kind of virtual instrument pointer method of controlling rotation and device |
| CN106502542A (en) * | 2016-10-27 | 2017-03-15 | 中企动力科技股份有限公司 | A kind of pointer spinning solution and device |
| CN108227895A (en) * | 2017-07-26 | 2018-06-29 | 珠海市魅族科技有限公司 | One kind puts out screen display methods and terminal, computer installation and readable storage medium storing program for executing |
| CN110059529A (en) * | 2017-12-13 | 2019-07-26 | 台达电子工业股份有限公司 | The recognition methods and its image capturing equipment of the direction of the pointer of analog measurement device |
| CN108600211A (en) * | 2018-04-18 | 2018-09-28 | 惠州市德赛西威汽车电子股份有限公司 | A kind of method that automobile virtual instrument obtains upgrade file |
| CN108664302A (en) * | 2018-04-24 | 2018-10-16 | 东莞正扬电子机械有限公司 | The implementation method of the type pointer virtual instrument of high performance-price ratio |
| CN111105477B (en) * | 2019-11-25 | 2023-04-28 | 航天科技控股集团股份有限公司 | Drawing method of 2D virtual pointer of full liquid crystal instrument |
| CN112116678B (en) * | 2020-08-09 | 2023-08-22 | 东风电驱动系统有限公司 | Irregular virtual pointer display method of liquid crystal instrument and liquid crystal instrument |
| CN114155452B (en) * | 2021-11-29 | 2022-11-15 | 江苏红光仪表厂有限公司 | Information identification method for industrial automation instrument |
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| JP4293257B2 (en) * | 2007-03-27 | 2009-07-08 | 株式会社デンソー | Display device |
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