CN2278926Y - Electronic zero setting circuit for optoelectronic coder - Google Patents
Electronic zero setting circuit for optoelectronic coder Download PDFInfo
- Publication number
- CN2278926Y CN2278926Y CN 96247089 CN96247089U CN2278926Y CN 2278926 Y CN2278926 Y CN 2278926Y CN 96247089 CN96247089 CN 96247089 CN 96247089 U CN96247089 U CN 96247089U CN 2278926 Y CN2278926 Y CN 2278926Y
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- zero setting
- state
- utility
- coder
- model
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Abstract
The utility model provides an electronic zero setting circuit for an optoelectronic coder which belongs to the technical field of the automatic measurement and relates to the improvement of the zero setting structure of the photoelectric coder. The utility model is composed of a switch, a resistance, a power supply and a computing circuit data processing system. The utility model conquers the disadvantages of a mechanical zero setting circuit that the structure is complicated, the positioning is unstable, etc. The utility model uses an electronic zero setting circuit to control the difference value of the zero position of a coder and a measuring system. The utility model has the advantages of simple structure, stable and reliable zero setting, small volume, light weight, convenient zero setting and high positioning accuracy.
Description
The invention belongs to the automatic measurement technical field, relate to photoelectric encoder, especially relate to improvement its zeroing structure.
In the occasion of using photoelectric encoder, the null position of scrambler does not overlap with the null position of measuring system rotating shaft, for the purpose that reaches both coincidences often becomes encoder design double-deck axle, and an additional cover complicated mechanical zeroing structure overlaps the zero point of diaxon, the physical construction of driving lever thimble-type, its thimble head on the driving lever that links with the scrambler main shaft makes its drive code-disc turn to desired null position.Because thimble tightness difference, then there is elastic deformation and the zero-bit of adjusting is changed, cause the poor stability of null position, not only exist the error of zero, influence measuring accuracy, and volume is big, complex structure, the cost height is adjusted inconvenience.
The objective of the invention is: the error of zero that the null position instability of solution driving lever thimble-type machine zero structure is brought, bearing accuracy is low, adjusts problems such as inconvenience.
Particular content of the present invention is: characteristics of the present invention are ends of a termination power 1 of switch 2, one end of the other end of switch 2 and resistance 3 connects with the input end of counting circuit 4, the other end of another termination power 1 of resistance 3, the binary code output terminal 5 of scrambler code-disc is connected in another input end of counting circuit 4, and the output terminal 6 of counting circuit 4 is connected in the input end of encoder data processing circuit 7.
Because scrambler itself designs fixing zero-bit is arranged, i.e. starting point, when the main shaft of scrambler can not overlap with the zero-bit of the rotating shaft of measuring system, both exist the zero-bit difference.When the present invention works, as shown in Figure 1, energized 1, this moment, switch 2 was in off-state, when the binary code of scrambler output is one state, adjust the closed and disconnected state of switch 2, change the input state of counting circuit 4, the output state of counting circuit 4 is also changed, even counting circuit 4 is in full zero output state.
Good effect of the present invention is: disconnect and closed state with switch, circuit 4 input ends add additional signal as calculated, make counting circuit output all-zero state.So just eliminate the error of zero of scrambler and measuring system, overcome the problem of the zero stability difference that driving lever thimble-type zeroing structure brings.Electronics zeroing is more simple in structure than machine zero, volume is little, in light weight, zeroing is reliable, good stability, and is easy to adjust and precision is high.
Fig. 1 is a structural representation of the present invention.
Embodiments of the invention: switch 2 shown in Figure 1 can adopt multi-way switch, and counting circuit 4 is selected the full adder or 8051 series monolithics of 74 series or 4000 series for use, and resistance 3 ranges of choice are between 1K Ω～10K Ω.Power supply 1 can be selected 5V for use, the 0.5A D.C. regulated power supply.
When if counting circuit 4 selects for use full adder to make zeroing circuit, then to meet N zeroing switch 2, i.e. K according to the N position output of scrambler
1, K
2K
NIf switch 2 is selected N the time, and then also will to select N composition be R to resistance 3
1, R
2R
N, this moment, full adder can be made up of N full adder, and when counting circuit 4 was selected Single Chip Microcomputer (SCM) system for use, an available Single Chip Microcomputer (SCM) system replaced N full adder.The output terminal 6 of counting circuit 4 is by P
1, P
2P
NIndividual output terminal is formed.The D of scrambler code-disc binary code output terminal 5
1, D
2D
NIndividual output terminal changes its state by counting circuit 4, makes P
1, P
2P
NThe state of output terminal 6 is an all-zero state, promptly reaches the zeroing purpose of zeroing circuit.
When using full adder, the one road zeroing circuit course of work is as follows:
Lowest order information code D when scrambler output terminal 5
1During for " 0 ", the input end 5 of full adder 4 lowest orders is " 0 " state, at this moment K switch
1Closure, another input end of full adder 4 also are " 0 " state, and then full adder 4 output terminals 6 are zero; When the information of scrambler lowest order was one state, the lowest order input end 5 of full adder 4 was an one state, if K
1Still be closure state, promptly another input end of lowest order full adder 4 is " 0 " state, and then full adder output terminal 6 is an one state, at this moment, does not satisfy the zeroing circuit requirement.As cut-off switch K
1The time, another input end of full adder 4 lowest orders D
1Also be one state, then full adder 4 outputs 6 are " 0 " state.But the carry end of full adder 4 is output as the carry input that " 1 " gives second level full adder, and promptly the carry input of second level full adder obtains an one state.D when scrambler output terminal 5
2During for " 0 " state, second level full adder will be output as one state and not satisfy the zeroing circuit requirement, then needs cut-off switch K
2, another input end that makes second level full adder is an one state, then makes full adder be output as " 0 " state, other level work processes are identical therewith, no longer repeat.
As shown in Figure 1, when using Single Chip Microcomputer (SCM) system, its zero clearing course of work is as follows:
Single Chip Microcomputer (SCM) system 4 is used as input port processing to multi-way switch 2, and scrambler has the N position, and multi-way switch just has N position, i.e. K
1, K
2K
NLike this, Single Chip Microcomputer (SCM) system 4 is read in a switch N state by the expansion I/O mouth and is carried out software processes.When measuring system is in " 0 " state, the lowest order D of scrambler
1When state output terminal is " 1 ", at this moment, K switch
1Disconnect, Single Chip Microcomputer (SCM) system collects this state and is " 1 ", and it carries out internal arithmetic, D
1Sign indicating number subtracts computing, and like this, the output terminal 6 of Single Chip Microcomputer (SCM) system 4 is P
1For " 0 " state, played the zeroing effect.Scrambler D
NPosition output state and D
1The output state course of work is identical.
Claims (1)
1, a kind of electronics zeroing circuit of photoelectric encoder, it is characterized in that: an end of a termination power 1 of switch 2, one end of the other end of switch 2 and resistance 3 connects with the input end of counting circuit 4, the other end of another termination power 1 of resistance 3, the output terminal 5 of the binary code of scrambler code-disc connects another input end of counting circuit 4, and the output terminal 6 of counting circuit 4 is connected in the input end of encoder data processing circuit 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96247089 CN2278926Y (en) | 1996-11-26 | 1996-11-26 | Electronic zero setting circuit for optoelectronic coder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96247089 CN2278926Y (en) | 1996-11-26 | 1996-11-26 | Electronic zero setting circuit for optoelectronic coder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2278926Y true CN2278926Y (en) | 1998-04-15 |
Family
ID=33919399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96247089 Expired - Fee Related CN2278926Y (en) | 1996-11-26 | 1996-11-26 | Electronic zero setting circuit for optoelectronic coder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2278926Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464693B (en) * | 2007-12-17 | 2010-11-03 | 台达电子工业股份有限公司 | Signal processing apparatus for motor position |
| CN107356890A (en) * | 2017-06-19 | 2017-11-17 | 宁波中车时代传感技术有限公司 | The adjustable proframmable linear Hall sensor chip of benchmark |
-
1996
- 1996-11-26 CN CN 96247089 patent/CN2278926Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464693B (en) * | 2007-12-17 | 2010-11-03 | 台达电子工业股份有限公司 | Signal processing apparatus for motor position |
| CN107356890A (en) * | 2017-06-19 | 2017-11-17 | 宁波中车时代传感技术有限公司 | The adjustable proframmable linear Hall sensor chip of benchmark |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |