CN101074967A - Method for inspecting rotary arc sensor rotation speed - Google Patents
Method for inspecting rotary arc sensor rotation speed Download PDFInfo
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- CN101074967A CN101074967A CN 200710105739 CN200710105739A CN101074967A CN 101074967 A CN101074967 A CN 101074967A CN 200710105739 CN200710105739 CN 200710105739 CN 200710105739 A CN200710105739 A CN 200710105739A CN 101074967 A CN101074967 A CN 101074967A
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- chip microcomputer
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- external interrupt
- rotary arc
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Abstract
A method for detecting rotary-speed of rotary arc transducer includes timing monolithic computer to be on one second, switching on external interruption of monolithic computer, delaying a fixed time again when a pulse signal is collected by external interruption of monolithic computer, adding 1 on pulse count value when delayed time is up then continuously detecting pulse and using pulse count value as rotary-speed value of rotary arc transducer when timing time of monolithic computer is up.
Description
Technical field
The present invention relates to the method that a kind of rotary arc sensor rotation speed detects.
Background technology
A kind of as in the weld seam tracking sensor of arc sensor, its point detection signal is exactly the welding arc point, does not have sensing station leading error, is real-time sensor fully, and is not afraid of that the splashing of electric arc, flue dust, arc light are disturbed, cost is low.Arc sensor comprises mariages arc sensor arranged side by side, oscillatory scanning arc sensor and rotary arc sensor.Wherein rotary arc sensor has outstanding superiority: high speed rotating has increased the detection sensitivity of welding gun position deviation, has greatly improved the precision of following the tracks of; High speed rotating has improved fast response characteristic, is applicable to the weld joint tracking of high-speed welding and thin plate overlap joint.
Make the extraction signal that rotary arc sensor can be stable at first must make its stabilization of speed, therefore need carry out closed-loop control rotating speed.The extracting method of tach signal is to adopt to press conversion method frequently in early days, and the pulse signal by optocoupler comes out utilizes and frequently presses chip that the frequency inverted of pulse is become voltage, exports as feedback signal through over-voltage comparator again.This method has many shortcomings: (1) tachometric survey is inaccurate.Owing to need become voltage by frequency inverted, therefore can there be some errors, influence accuracy of detection; (2) frequency is pressed the peripheral circuit more complicated of chip, and parameter needs to calculate, if exist error also can influence the measurement of rotating speed; (3) compare with aanalogvoltage, make speed governing very complicated.
Summary of the invention
The purpose of this invention is to provide a kind of method for inspecting rotary arc sensor rotation speed, it has remedied with frequently pressing conversion chip to detect the defective of rotating speed by chip microcontroller.
The present invention is achieved like this, it comprises single-chip microcomputer, its detection method step is as follows: at first allow single-chip microcomputer regularly 1 second, open the single-chip microcomputer external interrupt, gather the pulse signal that optocoupler is come by single-chip microcomputer external interrupt mouth, these pulse signals can make single-chip microcomputer produce interruption, when the single-chip microcomputer external interrupt collects a pulse signal, delay time a regular time earlier, two kinds of situations are during this period of time arranged: external interrupt does not detect other pulse again; External interrupt detects a pulse once more, and this pulse will be regarded as noise signal, not be counted.So just can eliminate in the optocoupler pulse signal noise.After delay time arrived, counted number of pulses added 1, continued to detect pulse then.When single-chip microcomputer was timed to, counted number of pulses was the rotating speed of rotary arc sensor just.
Advantage of the present invention is: (1) directly adopts the method for meter pulse to detect rotating speed, and it is simple, accurate, practical to test the speed; (2) directly by the noise of software elimination optocoupler pulse, do not need other hardware filtering, anti-interference strong, and reduced cost; (3) detected number of pulses is exactly a tachometer value, is convenient to speed governing.
Description of drawings
Fig. 1 is a principle of work block scheme of the present invention;
Fig. 2 is a workflow diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes single-chip microcomputer 1, gather optocoupler 2 by single-chip microcomputer external interrupt mouth, the pulse signal of coming, these pulse signals can make single-chip microcomputer produce interruption.As shown in Figure 2, operating process of the present invention is: allow single-chip microcomputer regularly 1 second, open the single-chip microcomputer external interrupt, when the single-chip microcomputer external interrupt collects a pulse signal, delay time a regular time earlier, two kinds of situations are during this period of time arranged: external interrupt does not detect pulse; External interrupt detects a pulse once more, and this pulse will be regarded as noise signal, not be counted.After delay time arrived, counted number of pulses added 1, continued to detect pulse then.When single-chip microcomputer was timed to, counted number of pulses was the rotating speed of rotary arc sensor just.
Claims (1)
1, a kind of method of rotary arc sensor rotation speed detection, it comprises single-chip microcomputer, it is characterized in that the detection method step is as follows: at first allow single-chip microcomputer regularly 1 second, open the single-chip microcomputer external interrupt, when the single-chip microcomputer external interrupt collects a pulse signal, delay time a regular time earlier, two kinds of situations are during this period of time arranged: external interrupt does not detect other pulse; External interrupt detects a pulse once more, and this pulse will be regarded as noise signal, not be counted, after delay time arrived, counted number of pulses added 1, continued to detect pulse then, when single-chip microcomputer was timed to, counted number of pulses was the rotating speed of rotary arc sensor just.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710105739 CN101074967A (en) | 2007-05-29 | 2007-05-29 | Method for inspecting rotary arc sensor rotation speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710105739 CN101074967A (en) | 2007-05-29 | 2007-05-29 | Method for inspecting rotary arc sensor rotation speed |
Publications (1)
| Publication Number | Publication Date |
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| CN101074967A true CN101074967A (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710105739 Pending CN101074967A (en) | 2007-05-29 | 2007-05-29 | Method for inspecting rotary arc sensor rotation speed |
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| CN (1) | CN101074967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546764A (en) * | 2016-12-06 | 2017-03-29 | 辽宁省计量科学研究院 | Velocity of displacement measuring instrument during high-precision real |
| CN107271712A (en) * | 2017-07-27 | 2017-10-20 | 南京信息工程大学 | A kind of measuring methods for rotary speed of electromotor |
| CN109693017A (en) * | 2019-01-21 | 2019-04-30 | 南昌大学 | A kind of electric arc revolution speed control system and its design method |
-
2007
- 2007-05-29 CN CN 200710105739 patent/CN101074967A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546764A (en) * | 2016-12-06 | 2017-03-29 | 辽宁省计量科学研究院 | Velocity of displacement measuring instrument during high-precision real |
| CN107271712A (en) * | 2017-07-27 | 2017-10-20 | 南京信息工程大学 | A kind of measuring methods for rotary speed of electromotor |
| CN109693017A (en) * | 2019-01-21 | 2019-04-30 | 南昌大学 | A kind of electric arc revolution speed control system and its design method |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20071121 |