CN102790569B - A kind of stepping motor rotating speed/speedometer special chip system - Google Patents
A kind of stepping motor rotating speed/speedometer special chip system Download PDFInfo
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- CN102790569B CN102790569B CN201110129887.0A CN201110129887A CN102790569B CN 102790569 B CN102790569 B CN 102790569B CN 201110129887 A CN201110129887 A CN 201110129887A CN 102790569 B CN102790569 B CN 102790569B
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Abstract
The invention discloses a kind of stepping motor rotating speed/speedometer special chip system, it is characterized in that, described chip system comprises one speed of a motor vehicle/signals of rotational speed sensor acquisition module, a step motor control module, one computing module, an A/D sampling module, an electrification reset module; The described speed of a motor vehicle/signals of rotational speed sensor acquisition module is connected with described computing module with described A/D sampling module, and described step motor control module and described computing module are in series, and described electrification reset module is connected with described computing module.Structure of the present invention is simple, easy to use.
Description
Technical field
The present invention relates to a kind of chip system, particularly relate to a kind of automotive electronics chip system, particularly a kind of stepping motor rotating speed/speedometer special chip system.
Background technology
China's automobile instrument experienced by mechanical type, analog circuit electronic type, digital instrument three developing stage.The electronic instrument be made up of transducer and the display unit of advanced person has started to replace traditional electromechanical instrument comprehensively, the development of present automobile instrument technology forward digitlization aspect.The tachometer driven as traditional special chip, speedometer also slowly by the tachometer of single-chip microcomputer and stepping motor and speedometer replace.
According to prior art, tachometer and speedometer adopt following Three models mostly: what (1) was traditional directly converts by driving chip the dynamic magnetic table that output signal drives moving magnetic filed to by sensor input signal, this table is called analog electric circuit electronics technical instrument: (2) carry out collecting sensor signal by single-chip microcomputer and the digital instrument of control step motor drive ic driving Step motor, are called digital instrument; (3) carry out collecting sensor signal by single-chip microcomputer and Driving Stepping Motor instruction digital instrument, be called digital instrument.The pluses and minuses of these three kinds of methods are as follows:
Advantage: (1) debugging is comparatively simple, pointer smoothness of walking about is good, and cost is low.(2) debugging is simple, and precision is high, and programming is simpler.(3) debugging is simple, and precision is high.
Shortcoming: (1) precision is not high, easily destroys.(2) need single-chip microcomputer designer during design, cost is high.(3) need single-chip microcomputer designer during design, programming is more complicated, and stepping motor has high-frequency noise sometimes.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of precision high, be not easy to destroy, design cost is low, and setting program is simple, the stepping motor rotating speed that coverage rate is high/speedometer special chip system.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of stepping motor rotating speed/speedometer special chip system, it is characterized in that, described chip system comprises one speed of a motor vehicle/signals of rotational speed sensor acquisition module, a step motor control module, a computing module, an A/D sampling module, an electrification reset module; The described speed of a motor vehicle/signals of rotational speed sensor acquisition module is connected with described computing module with described A/D sampling module, and described step motor control module and described computing module are in series, and described electrification reset module is connected with described computing module.
Preferably, have a signal input part outside described chip system, the described speed of a motor vehicle/signals of rotational speed sensor acquisition module is connected with described signal input part.
Preferably, have a proportion adjustment end outside described chip system, described A/D sampling module is connected with described proportion adjustment end.
Preferably, have a stepping motor outside described chip system, described chip system is connected with described stepping motor by described step motor control module.
By technique scheme, the invention has the beneficial effects as follows:
The present invention completes the speed of a motor vehicle, signals of rotational speed sensor collection, the function of Driving Stepping Motor display, and adapts to speedometer and the tachometer of multiple unlike signal ratio, and the present invention has input sensor signal and exports the adjustable function of angle ratio.
Use product design of the present invention digital tachometer/speedometer, without the need to Software for Design teacher programming, only need according to indoor design of the present invention analog step motor control module that driving stepper motor is walked about more level and smooth, noiselessness.Present invention reduces the cost of instrument, do not need Software for Design personnel due to during design, this saves personnel cost.In addition, the present invention is application-specific integrated circuit (ASIC), and when volume production, cost can be very low, reduces the hardware cost of instrument simultaneously, and the coverage rate that test and screening for special circuit can be done is higher, so also improve reliability.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is cut-away view of the present invention.
Numeral and the corresponding component title represented by letter in figure:
100. speed of a motor vehicle/tach signal acquisition module 200. A/D sampling module 300. computing module 400. step motor control module 500. electrification reset module 600. signal input part 700. stepping motor 800. proportion adjustment end.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Shown in Figure 1, a kind of stepping motor rotating speed/speedometer special chip system, described chip system comprises one speed of a motor vehicle/signals of rotational speed sensor acquisition module 100, step motor control module 400, one computing module 300, A/D sampling module 200, electrification reset module 500.
The described speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 is connected with described computing module 300 with described A/D sampling module 200, described step motor control module 400 is in series with described computing module 300, and described electrification reset module 500 is connected with described computing module 300.
Have a signal input part 600 outside its chip system, the described speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 is connected with described signal input part 600.
The described speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 is for the signal of Received signal strength input 600.
A proportion adjustment end 800 is had, the angle ratio that described A/D sampling module 200 outputs signal for regulating proportion adjustment end 800 outside described chip system.
Described electrification reset module 500 can make computing module 300 automatically reset after processing signals.
Embodiment 1
See Fig. 1, method of operation of the present invention is as follows:
(1) signal of signal input part 600 enters the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100, the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 is responsible for gathering signal, the signal of proportion adjustment end 800 enters the angle ratio of A/D sampling module 200, A/D sampling module 200 for regulating proportion adjustment end 800 to output signal.
(2) signal processed through the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 and A/D sampling module 200 enters computing module 300.
(3) deliver to step motor control module 400 after computing module 300 pairs of signal transacting, be presented on Driving Stepping Motor 700 after the process of step motor control module 400.
Embodiment 2
See Fig. 1, another method of operation of the present invention is as follows:
(1) signal of signal input part 600 enters the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100, the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 is responsible for gathering signal, the signal of proportion adjustment end 800 enters the angle ratio of A/D sampling module 200, A/D sampling module 200 for regulating proportion adjustment end 800 to output signal.
(2) signal processed through the speed of a motor vehicle/signals of rotational speed sensor acquisition module 100 and A/D sampling module 200 enters computing module 300.
(3) computing module 300 pairs of signals process, and some signal demand repeatedly processes, and electrification reset module 500 can make computing module 300 automatically reset after processing signals.
(4) computing module 300 after resetting is processing signal, and the signal after process delivers to step motor control module 400, is presented on Driving Stepping Motor 700 after the process of step motor control module 400.
By above-mentioned two embodiments, the present invention completes the speed of a motor vehicle, signals of rotational speed sensor collection, the function of Driving Stepping Motor display, and adapt to speedometer and the tachometer of multiple unlike signal ratio, the present invention has input sensor signal and exports the adjustable function of angle ratio.
Stepping motor rotating speed of the present invention/speedometer special chip system, without the need to Software for Design teacher programming, has only needed according to indoor design of the present invention analog step motor control module that driving stepper motor is walked about more level and smooth, noiselessness.Present invention reduces the cost of instrument, do not need Software for Design personnel due to during design, this saves personnel cost.In addition, the present invention is application-specific integrated circuit (ASIC), and when volume production, cost can be very low, reduces the hardware cost of instrument simultaneously, and the coverage rate that test and screening for special circuit can be done is higher, so also improve reliability.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof
.
Claims (3)
1. stepping motor rotating speed/speedometer special chip system, is characterized in that: described chip system comprises one speed of a motor vehicle/signals of rotational speed sensor acquisition module, a step motor control module, a computing module, an A/D sampling module, an electrification reset module; The described speed of a motor vehicle/signals of rotational speed sensor acquisition module is connected with described computing module with described A/D sampling module, and described step motor control module and described computing module are in series, and described electrification reset module is connected with described computing module;
Described computing module is to after signal transacting, and through electrification reset module resets, the computing module after reset is again to delivering to described step motor control module after signal transacting;
Have a proportion adjustment end outside described chip system, described A/D sampling module is connected with described proportion adjustment end.
2. stepping motor rotating speed according to claim 1/speedometer special chip system, is characterized in that: have a signal input part outside described chip system, and the described speed of a motor vehicle/signals of rotational speed sensor acquisition module is connected with described signal input part.
3. stepping motor rotating speed according to claim 1/speedometer special chip system, is characterized in that: have a stepping motor outside described chip system, and described chip system is connected with described stepping motor by described step motor control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110129887.0A CN102790569B (en) | 2011-05-19 | 2011-05-19 | A kind of stepping motor rotating speed/speedometer special chip system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110129887.0A CN102790569B (en) | 2011-05-19 | 2011-05-19 | A kind of stepping motor rotating speed/speedometer special chip system |
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| CN102790569A CN102790569A (en) | 2012-11-21 |
| CN102790569B true CN102790569B (en) | 2015-08-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2322819Y (en) * | 1997-12-02 | 1999-06-09 | 吕东明 | Computer fluorescent display control instrument for motor vehicle |
| CN1618647A (en) * | 2004-11-29 | 2005-05-25 | 武汉理工大学 | Composite automobile instrument and vehicle multifunction information platform based on virtual and digital technology |
| CN102003978A (en) * | 2010-10-22 | 2011-04-06 | 金华市金开电子技术有限公司 | Automotive combined instrument and speed ratio adjusting method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090115587A1 (en) * | 2007-11-05 | 2009-05-07 | Xiuyu Che | Single-Chip Microcomputer Controller for Automobile Instruments |
| TW201111194A (en) * | 2009-09-18 | 2011-04-01 | Liu I Sheng | Auto-meter system with controller area network bus |
-
2011
- 2011-05-19 CN CN201110129887.0A patent/CN102790569B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2322819Y (en) * | 1997-12-02 | 1999-06-09 | 吕东明 | Computer fluorescent display control instrument for motor vehicle |
| CN1618647A (en) * | 2004-11-29 | 2005-05-25 | 武汉理工大学 | Composite automobile instrument and vehicle multifunction information platform based on virtual and digital technology |
| CN102003978A (en) * | 2010-10-22 | 2011-04-06 | 金华市金开电子技术有限公司 | Automotive combined instrument and speed ratio adjusting method |
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| CN102790569A (en) | 2012-11-21 |
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