CN108407758A - A kind of digital instrument pointer display system and method - Google Patents
A kind of digital instrument pointer display system and method Download PDFInfo
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- CN108407758A CN108407758A CN201810119449.8A CN201810119449A CN108407758A CN 108407758 A CN108407758 A CN 108407758A CN 201810119449 A CN201810119449 A CN 201810119449A CN 108407758 A CN108407758 A CN 108407758A
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- 230000033001 locomotion Effects 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 28
- 230000001133 acceleration Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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- 230000006870 function Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/104—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device characterised by the type of theft warning signal, e.g. visual or audible signals with special characteristics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
- B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
- B60K35/215—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
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Abstract
The present invention relates to digital instrument fields, it is proposed that a kind of digital instrument pointer display system, the system comprises：Digital instrument pointer display system, it is characterised in that：The system comprises：Pointer window, common window, CPU module and data-interface；The data-interface is used to show that engine speed and automobile speed, the common window are used for display dial, plain text and icon according to the data that data-interface receives for sending and receiving external data, the pointer window；According to the pointer window preceding, the pointer window and the common window are synthesized, and are shown as complete digital instrument image the CPU module by the common posterior sequence of window.The digital instrument pointer display system of the present invention realizes that gauge pointer shows that accuracy is high, response real-time is high, vision fluency is high.In addition to this, the present invention also provides a kind of digital instrument indicating pointer display methods.
Description
Technical field
The present invention relates to digital instrument technologies, more particularly to digital instrument pointer display system and method.
Background technology
With being constantly progressive for modernization technological means, electronic product is widely applied on automobile, and is gradually tended to
Intelligence, most of current most common automobile instrument use electromechanical combination instrument, not with head-down information
It is disconnected to increase, cause combination instrument dial plate area constantly to increase, and existing electromechanical combines the instrument of automobile instrument in practical application
Dial plate demonstrates one's ability limited, cannot be satisfied the needs of the processing of ever-increasing vehicle every terms of information, displaying.Orthodox car instrument master
If for some parameters of fuel-engined vehicle, including be directed to oil mass, oil temperature is refueled, the relevant informations such as engine carry out display with
Alarm.The display data that orthodox car instrument usually provides a user is analog signal, and the precision of data and accuracy are all poor.
For nowadays in the application scenarios of automobile instrument, needing the content that instrument is shown more and more（Bus diagnostic is believed
Breath, running information, security information, entertainment information, navigation information etc.）, car digital instrument substitution conventional instrument has been that industry becomes
Gesture.
Present invention is generally directed to the above problems to propose a kind of digital instrument pointer display system and method.
Invention content
Based on this, it is necessary to for existing onboard instruments show there are the problem of, a kind of digital instrument pointer is provided and is shown
System and method, wherein this crucial technology point is shown by the pointer of digital instrument dial plate, realizes that digital instrument pointer is aobvious
Show that accuracy is high, response real-time is high, vision fluency is high.
The present invention provides a kind of digital instrument pointer display system, the system comprises：Pointer window, common window,
CPU module and data-interface；The data-interface is used for for sending and receiving external data, the pointer window according to data
The data of interface show that engine speed and automobile speed, the common window are used for display dial, plain text and figure
Mark；The CPU module according to the pointer window in preceding, the common posterior sequence of window, by the pointer window and described general
Logical window is synthesized, and is shown as complete digital instrument image.
Preferably, the common window be specifically used for display dial scale, background, menu, icon, the time, total kilometrage and
Small mileage；The data-interface is additionally operable to automobile CAN-bus transmission data, including total kilometrage and the number for needing active inquiry
According to.
Preferably, the pointer window is realized using OpenGL interfaces, is directly drawn using OpenGL, it is ensured that display refreshes
Rate reaches 66 frames/second.
Preferably, the common window is realized using the GUI frames of Qt, and the institute of 30 frames/second is less than for display refresh rates
There is display information.
Preferably, the data-interface, for the IPC mechanism by QNX systems, other data services with internal system
Process interacts realization.
In addition to this, the invention also discloses a kind of digital instrument pointers according to digital instrument pointer display system to show
Method the described method comprises the following steps：
Step 1：Initialization pointers window；
Step 2：Data-interface message is inquired, new hand motion boundary value setting data is judged whether there is, step is jumped to if having
Rapid 3, otherwise go to step 4；
Step 3：Data update hand motion boundary value is set according to the new hand motion boundary value；
Step 4：Judge current pointer motion state, if current pointer is halted state, gos to step 2, otherwise jump to
Step 5；
Step 5：Pointer is redrawn to new position according to hand motion state and hand motion boundary value；
Step 6：Go to step 2.
Preferably, the step 3 specifically comprises the following steps：
Step 31：Judge current pointer motion state, if halted state, then gos to step 32, if acceleration mode, then jump
Step 33 is gone to, if at the uniform velocity state, then gos to step 34, if deceleration regime, then gos to step 35；
Step 32：Setting accelerates, at the uniform velocity, deceleration boundary value, and pointer is set, accelerator is entered by halted state；Jump to step
Rapid 36；
Step 33：Keep original accelerator, reset at the uniform velocity with deceleration boundary value；Go to step 36；
Step 34：Remain a constant speed process, resets at the uniform velocity boundary value and deceleration boundary value；Go to step 36；
Step 35：According to the acceleration of front deceleration, accelerator is entered with identical acceleration value；It resets and accelerates, is even
Speed and deceleration boundary value；Go to step 36；
Step 36：The setting of hand motion boundary value terminates.
Preferably, described to accelerate that boundary value is the acceleration time and accelerates to speed at the uniform velocity, the at the uniform velocity boundary value is
At the uniform velocity time, the deceleration boundary value are the time that zero is decelerated to from uniform velocity.
In another preferred embodiment, the step 5 specifically comprises the following steps：
Step 51：Judge whether current pointer accelerator terminates, if being not finished, continues to execute accelerator, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If accelerator has been tied
Beam, then go to step 52；
Step 52：Judge whether current pointer at the uniform velocity process terminates, if being not finished, continues to execute at the uniform velocity process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If at the uniform velocity process has been tied
Beam, then go to step 53；
Step 53：Judge whether current pointer moderating process terminates, if being not finished, continues to execute moderating process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If moderating process has been tied
Beam, then go to step 54；
Step 54：Current pointer is set as halted state；
Step 55：Continue to execute subsequent step.
Preferably, further include following steps before step 2 after the step 1：
Step 11：Start timer service, inquiry service is provided between the step of step 2- steps 6 continuous poll.
The present invention proposes a kind of digital instrument pointer display system to solve above-mentioned technological deficiency existing in the prior art
System and method, compared with prior art, this patent has the advantages that：
1, digital instrument pointer display system and method proposed by the present invention, pointer window are realized by independent window, pointer fortune
Dynamic process splits into acceleration, at the uniform velocity with 3 subprocess that slow down, and ensure that proper motion track of the pointer similar to mechanical indicator.
2, the present invention realizes number using the GUI frames of 2.0 technologies of OpenGL ES, the IPC technologies of QNX systems and Qt
Pointer shows that accuracy is high, response real-time is high, vision fluency is high, ensures the real-time and display fluency of hand motion.
Description of the drawings
Fig. 1 is the block schematic illustration of digital instrument pointer display system of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of digital instrument pointer display system of the embodiment of the present invention；
Fig. 3 is the internal composite structural diagram of application of digital instrument pointer display system of the embodiment of the present invention；
Fig. 4 is the flow chart of digital instrument indicating pointer display method of the embodiment of the present invention；
Fig. 5 is the pointer window banging flow chart of digital instrument indicating pointer display method of the embodiment of the present invention.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.Keep the understanding to the disclosure more saturating on the contrary, purpose of providing these embodiments is
It is thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
For problems of the prior art, the present invention is based on the vehicle-mounted digital instrument of QNX systems, need to use liquid crystal
Screen display speedometer, engine speed indicator etc., the function point that software uses in the present invention mainly has：2.0 technologies of OpenGL ES,
The IPC technologies of QNX systems and the GUI frames of Qt.
Embodiment one：
Referring to Fig. 1, for the block schematic illustration of embodiment digital instrument pointer display system；Digital instrument provided by the invention refers to
Needle display system, Display Realization basic structure are that application widget is split as 2 parts：
1, pointer window is realized using OpenGL interfaces.
2, common window（Dial plate, text, icon）, realized using the GUI frames of Qt.
As shown in the table：
According to the window display sequence in Fig. 1：Pointer window rear, after the synthesis of GPU, is shown as in preceding, common window
Complete image.
Fig. 2 is the structural schematic diagram of digital instrument pointer display system of the embodiment of the present invention.The present invention provides a kind of numbers
Word gauge pointer display system, the system comprises：Pointer window 3, common window 4, CPU module 2 and data-interface 1；It is described
Data-interface 1 is used to show hair according to the data that data-interface receives for sending and receiving external data, the pointer window 3
Motivation rotating speed and automobile speed, the common window 4 are used for display dial, plain text and icon；The CPU module 2 according to
For the pointer window 3 preceding, 4 posterior sequence of common window synthesizes the pointer window 3 and the common window 4,
And it is shown as complete digital instrument image.
In a preferred embodiment, as shown in figure 3, the application for digital instrument pointer display system of the embodiment of the present invention is internal
Composite structural diagram；The common window 4 be specifically used for display dial scale, background, menu, icon, the time, total kilometrage and it is small in
Journey；The data-interface 1 is additionally operable to automobile CAN-bus transmission data, including total kilometrage and the data for needing active inquiry.
Preferably, the pointer window 3 is realized using OpenGL interfaces, is directly drawn using OpenGL, it is ensured that display brush
New rate reaches 66 frames/second.
Preferably, the common window 4 is realized using the GUI frames of Qt, and the institute of 30 frames/second is less than for display refresh rates
There is display information.
Preferably, the data-interface 1 takes for the IPC mechanism by QNX systems with other data of internal system
Business process interacts realization.
The technology point that the present invention mainly uses includes：
（1）, 2.0 technologies of OpenGL ES
It is layered by window, pointer window is directly drawn using OpenGL, can ensure that display refresh rates reach 66 frames/second.Refresh
The sufficiently high real-time that just can guarantee hand motion of rate and display fluency.
（2）, QNX systems IPC technologies
By the IPC mechanism of QNX systems, interacted with other data service processes of internal system；With CPU usage
It is low, the high advantage of real-time.
（3）The GUI frames of Qt
Common GUI Development of Framework of the window based on Qt, ripe GUI frames, with that the development cycle is short, scalability is high is excellent
Point.
Embodiment two
In addition to this, the invention also discloses a kind of digital instrument pointer display sides according to digital instrument pointer display system
Method, as shown in figure 4, for the flow chart of digital instrument indicating pointer display method of the embodiment of the present invention；
It the described method comprises the following steps：
Step 1：Initialization pointers window；
Step 2：Data-interface message is inquired, new hand motion boundary value setting data is judged whether there is, step is jumped to if having
Rapid 3, otherwise go to step 4；
Step 3：Data update hand motion boundary value is set according to the new hand motion boundary value；
Step 4：Judge current pointer motion state, if current pointer is halted state, gos to step 2, otherwise jump to
Step 5；
Step 5：Pointer is redrawn to new position according to hand motion state and hand motion boundary value；
Step 6：Go to step 2.
In another preferred embodiment, as shown in figure 5, being the pointer of digital instrument indicating pointer display method of the embodiment of the present invention
Window banging flow chart；
More specifically, the step 3 specifically comprises the following steps：
Step 31：Judge current pointer motion state, if halted state, then gos to step 32, if acceleration mode, then jump
Step 33 is gone to, if at the uniform velocity state, then gos to step 34, if deceleration regime, then gos to step 35；
Step 32：Setting accelerates, at the uniform velocity, deceleration boundary value, and pointer is set, accelerator is entered by halted state；Jump to step
Rapid 36；
Step 33：Keep original accelerator, reset at the uniform velocity with deceleration boundary value；Go to step 36；
Step 34：Remain a constant speed process, resets at the uniform velocity boundary value and deceleration boundary value；Go to step 36；
Step 35：According to the acceleration of front deceleration, accelerator is entered with identical acceleration value；It resets and accelerates, is even
Speed and deceleration boundary value；Go to step 36；
Step 36：The setting of hand motion boundary value terminates.
Preferably, described to accelerate that boundary value is the acceleration time and accelerates to speed at the uniform velocity, the at the uniform velocity boundary value is
At the uniform velocity time, the deceleration boundary value are the time that zero is decelerated to from uniform velocity.
In another preferred embodiment, the step 5 specifically comprises the following steps：
Step 51：Judge whether current pointer accelerator terminates, if being not finished, continues to execute accelerator, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If accelerator has been tied
Beam, then go to step 52；
Step 52：Judge whether current pointer at the uniform velocity process terminates, if being not finished, continues to execute at the uniform velocity process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If at the uniform velocity process has been tied
Beam, then go to step 53；
Step 53：Judge whether current pointer moderating process terminates, if being not finished, continues to execute moderating process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If moderating process has been tied
Beam, then go to step 54；
Step 54：Current pointer is set as halted state；
Step 55：Continue to execute subsequent step.
Preferably, further include following steps before step 2 after the step 1：
Step 11：Start timer service, inquiry service is provided between the step of step 2- steps 6 continuous poll.
To sum up, the advantages of product of the present invention and inventive point includes mainly：
Inventive point：（1）Pointer window is realized by independent window.
（2）Hand motion process splits into 3 subprocess（Accelerator（v=t^4）, at the uniform velocity process (v=t), moderating process
(v=t^4)）It ensure that proper motion track of the pointer similar to mechanical indicator.
Advantage：This programme is used in instrument product, can reach the design requirement of gauge pointer：Accuracy is high, responds
Real-time is high, vision fluency is high.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of digital instrument pointer display system, it is characterised in that：The system comprises：Pointer window, common window, GPU
Module and data-interface；The data-interface is for sending and receiving external data, and the pointer window according to data for connecing
The data that mouth receives show that engine speed and automobile speed, the common window are used for display dial, plain text and icon；
The CPU module according to the pointer window in preceding, the common posterior sequence of window, by the pointer window and the general window
Mouth is synthesized, and is shown as complete digital instrument image.
2. digital instrument pointer display system according to claim 1, which is characterized in that the common window is specifically used for
Display dial scale, background, menu, icon, time, total kilometrage and small mileage；The data-interface is additionally operable to total to automobile CAN
Line transmission data, including total kilometrage and the data for needing active inquiry.
3. digital instrument pointer display system according to claim 1 or 2, which is characterized in that the pointer window uses
OpenGL interfaces are realized, are directly drawn using OpenGL, it is ensured that display refresh rates reach 66 frames/second.
4. digital instrument pointer display system according to claim 1 or 2, which is characterized in that the common window uses
The GUI frames of Qt are realized, all display information of 30 frames/second are less than for display refresh rates.
5. digital instrument pointer display system according to claim 1 or 2, which is characterized in that the data-interface is used for
By the IPC mechanism of QNX systems, realization is interacted with other data service processes of internal system.
6. a kind of digital instrument pointer display side using any one of claim 1-5 digital instrument pointer display systems
Method, it is characterised in that：It the described method comprises the following steps：
Step 1：Initialization pointers window；
Step 2：Data-interface message is inquired, new hand motion boundary value setting data is judged whether there is, step is jumped to if having
Rapid 3, otherwise go to step 4；
Step 3：Data update hand motion boundary value is set according to the new hand motion boundary value；
Step 4：Judge current pointer motion state, if current pointer is halted state, gos to step 2, otherwise jump to
Step 5；
Step 5：Pointer is redrawn to new position according to hand motion state and hand motion boundary value；
Step 6：Go to step 2.
7. digital instrument indicating pointer display method according to claim 6, which is characterized in that the step 3 specifically include as
Lower step：
Step 31：Judge current pointer motion state, if halted state, then gos to step 32, if acceleration mode, then jump
Step 33 is gone to, if at the uniform velocity state, then gos to step 34, if deceleration regime, then gos to step 35；
Step 32：Setting accelerates, at the uniform velocity, deceleration boundary value, and pointer is set, accelerator is entered by halted state；Jump to step
Rapid 36；
Step 33：Keep original accelerator, reset at the uniform velocity with deceleration boundary value；Go to step 36；
Step 34：Remain a constant speed process, resets at the uniform velocity boundary value and deceleration boundary value；Go to step 36；
Step 35：According to the acceleration of front deceleration, accelerator is entered with identical acceleration value；It resets and accelerates, is even
Speed and deceleration boundary value；Go to step 36；
Step 36：The setting of hand motion boundary value terminates.
8. digital instrument indicating pointer display method according to claim 7, which is characterized in that the acceleration boundary value is to accelerate
Time and speed at the uniform velocity is accelerated to, the at the uniform velocity boundary value is that at the uniform velocity time, the deceleration boundary value are from uniform velocity
Decelerate to for zero time.
9. the digital instrument indicating pointer display method according to any one of claim 6-8, which is characterized in that the step
5 specifically comprise the following steps：
Step 51：Judge whether current pointer accelerator terminates, if being not finished, continues to execute accelerator, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If accelerator has been tied
Beam, then go to step 52；
Step 52：Judge whether current pointer at the uniform velocity process terminates, if being not finished, continues to execute at the uniform velocity process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If at the uniform velocity process has been tied
Beam, then go to step 53；
Step 53：Judge whether current pointer moderating process terminates, if being not finished, continues to execute moderating process, and according to finger
After needle movement boundary value calculates new pointer position, pointer is redrawn to new position, gos to step 55；If moderating process has been tied
Beam, then go to step 54；
Step 54：Current pointer is set as halted state；
Step 55：Continue to execute subsequent step.
10. the digital instrument indicating pointer display method according to any one of claim 6-8, which is characterized in that described
Step 2 further includes before following steps after step 1：
Step 11：Start timer service, inquiry service is provided between the step of step 2- steps 6 continuous poll.
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| CN112116678A (en) * | 2020-08-09 | 2020-12-22 | 东风电驱动系统有限公司 | Irregular virtual pointer display method for liquid crystal instrument and 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 |
| CN112988294A (en) * | 2021-02-02 | 2021-06-18 | 武汉光庭信息技术股份有限公司 | Method and device for optimizing virtual pointer of RH850 liquid crystal instrument |
| CN112988294B (en) * | 2021-02-02 | 2022-05-17 | 武汉光庭信息技术股份有限公司 | Method and device for optimizing virtual pointer of RH850 liquid crystal instrument |
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Application publication date: 20180817 |