CN202422190U - Revolution number measuring system based on single chip microcomputer - Google Patents
Revolution number measuring system based on single chip microcomputer Download PDFInfo
- Publication number
- CN202422190U CN202422190U CN 201120539582 CN201120539582U CN202422190U CN 202422190 U CN202422190 U CN 202422190U CN 201120539582 CN201120539582 CN 201120539582 CN 201120539582 U CN201120539582 U CN 201120539582U CN 202422190 U CN202422190 U CN 202422190U
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- China
- Prior art keywords
- chip microcomputer
- single chip
- measuring system
- hall element
- supply module
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a revolution number measuring system based on a single chip microcomputer, which consists of a power supply module, a Hall sensor, a filtering amplifying circuit, an A/D (analog/digital) converter, the single chip microcomputer and a digital tube display circuit. The power supply module supplies power for the total system, the Hall sensor receives pulse signals, the pulse signals pass through the filtering amplifying circuit, are converted by the A/D converter, are inputted into the single chip microcomputer to be processed, and then are outputted to the digital tube display circuit. The revolution number measuring system is mainly used for measuring revolution numbers.
Description
Technical field
The utility model belongs to electronic technology field, is specifically related to a kind of SCM Based revolution speed measuring system.
Background technology
The develop rapidly of Along with computer technology in recent years, computing machine have also formally formed general-purpose computing system and two branches of embedded computer system.Single-chip microcomputer is as most typical embedded system, because its small volume and extremely low cost are widely used in household electrical appliance, instrument and meter, industrial control unit and the communication products, becomes most important intelligent instrument in the contemporary electronic systems.While digital-to-analogue power technology, microelectric technique also fast development make a large amount of integrated chips occur, thereby realize that a lot of simple functions have replaced original mimic channel.Utilize single-chip microcomputer, integrated chip and electronic circuit just can design very easily like this, what wherein the most typical, present application was also a lot of is exactly the design of electronic product.
The device of existing measurement revolution has Mechanical Method etc., but Mechanical Method is not suitable for the higher revolution of measurement.And its structure is complicated, and is high to precision requirement.
Summary of the invention
The purpose of the utility model is to provide a kind of simple in structure, with low cost, applied widely SCM Based revolution speed measuring system.
The technical scheme of the utility model is: SCM Based revolution speed measuring system; It is made up of supply module, Hall element, filter amplification circuit, A/D converter, single-chip microcomputer and charactron display circuit; Said supply module is supplied power to total system, and Hall element is accepted pulse signal after after the input single-chip microcomputer is handled after the A/D converter conversion, output to the charactron display circuit after the filter amplification circuit.
Further, said single-chip microcomputer is AT89C51.
Through Hall element, load onto gear to velocity measurement mechanisms, in the utility model then the edge of Hall element near gear; When gear when constantly rotating; The tooth of gear is understood the nearly Hall element of continued access mutually with groove, and so Hall element will produce series of pulses, when tooth is to continue high level near sensor; When groove is to continue low level near Hall element; Gear on being enclosed within axle the series of pulses waveform will occur when constantly rotating like this, becoming the pulse conversion of signals rotating speed to be presented at above the charactron through passing to the mouth that tests the speed of single-chip microcomputer after the shaping circuit shaping, converting after this wave shaping.
The utility model compared with prior art has following advantage:
Simple in structure, with low cost, the place that needs to measure revolution can be widely used in, and instant revolution can be shown in real time.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
Following structure accompanying drawing is done further explanation to the utility model:
As shown in Figure 1; SCM Based revolution speed measuring system; It is made up of supply module, Hall element, filter amplification circuit, A/D converter, single-chip microcomputer and charactron display circuit; Said supply module is supplied power to total system, and Hall element is accepted pulse signal after after the input single-chip microcomputer is handled after the A/D converter conversion, output to the charactron display circuit after the filter amplification circuit.
In order to practice thrift cost; Single-chip microcomputer is selected AT89C51 for use; 80C51 is the most basic product in the MCS-51 of the INTEL Corp. series monolithic, and it adopts 8 single-chip microcomputers of high-performance of the reliable CHMOS technology manufacturing of INTEL Corp., belongs to the HCMOS product of the MCS-51 of standard.It has combined the high speed of HMOS and the low-power consumption characteristic of high density technology and CHMOS, and it inherits and expanded the architecture and the order set of MCS-48 single-chip microcomputer.
The built-in CPU of 80C51,128 byte inner data-carrier store RAM, 32 two-way I/O (I/O) mouth, 2 16 bit timings/counters and 5 two-stage interrupt structures, a full duplex serial communication port, sheet internal clock oscillatory circuit.
Through Hall element, load onto gear to velocity measurement mechanisms, then the edge of Hall element near gear; When gear when constantly rotating; The tooth of gear is understood the nearly Hall element of continued access mutually with groove, and so Hall element will produce series of pulses, when tooth is to continue high level near sensor; When groove is to continue low level near Hall element; Gear on being enclosed within axle the series of pulses waveform will occur when constantly rotating like this, becoming the pulse conversion of signals rotating speed to be presented at above the charactron through passing to the mouth that tests the speed of single-chip microcomputer after the shaping circuit shaping, converting after this wave shaping.
Claims (2)
1. SCM Based revolution speed measuring system; It is characterized in that: it is made up of supply module, Hall element, filter amplification circuit, A/D converter, single-chip microcomputer and charactron display circuit; Said supply module is supplied power to total system, and Hall element is accepted pulse signal after after the input single-chip microcomputer is handled after the A/D converter conversion, output to the charactron display circuit after the filter amplification circuit.
2. SCM Based revolution speed measuring according to claim 1 system, it is characterized in that: said single-chip microcomputer is AT89C51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120539582 CN202422190U (en) | 2011-12-21 | 2011-12-21 | Revolution number measuring system based on single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120539582 CN202422190U (en) | 2011-12-21 | 2011-12-21 | Revolution number measuring system based on single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422190U true CN202422190U (en) | 2012-09-05 |
Family
ID=46746928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120539582 Expired - Fee Related CN202422190U (en) | 2011-12-21 | 2011-12-21 | Revolution number measuring system based on single chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422190U (en) |
-
2011
- 2011-12-21 CN CN 201120539582 patent/CN202422190U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121221 |