CN2697595Y - Code wheel reading out device with critical state detection - Google Patents
Code wheel reading out device with critical state detection Download PDFInfo
- Publication number
- CN2697595Y CN2697595Y CN 200320119588 CN200320119588U CN2697595Y CN 2697595 Y CN2697595 Y CN 2697595Y CN 200320119588 CN200320119588 CN 200320119588 CN 200320119588 U CN200320119588 U CN 200320119588U CN 2697595 Y CN2697595 Y CN 2697595Y
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- Prior art keywords
- photocoupler
- reading
- code channel
- code
- critical state
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Abstract
The utility model relates to a code wheel reading out device with critical state detection which includes a mechanical code wheel mechanism. The utility model is characterized in that: a critical state detecting identification code channel is provided on a print wheel; a stepping motor which is used for adjusting the angle of a photocoupler assembly supporter is provided, and the rotatable photocoupler assembly supporter is matched and connected with the output shaft of the stepping motor through a gear; a detecting photocoupler which is corresponded with the critical state detecting identification code channel on the print wheel is provided on the photocoupler assembly supporter. When the detecting photocoupler is corresponded with the reflecting part of the critical state detecting identification code channel, the signal is sent out to make the miniature stepping motor rotate a definite angle to correct the corresponding position of the normal coding identification code channel on the reading photocoupler and the print wheel. The utility model can verily do the passivity and the accuracy. The reading number value is completely coincident with the number value displayed on the window of the lettered dial at any time without adding any additional devices which proceed with the processing to the critical condition. Not only the reading error is avoided, but also the cost is economized.
Description
Technical field
The utility model relates to the code-disc reading device, especially a kind of code-disc reading device of the band critical conditions identification of reading error when avoiding character wheel numerical value between two numbers.
Technical background
What code-disc used is mechanical reading, is widely used in the instrument such as watt-hour meter, tap water meter and gas meter, flow meter.For satisfying the long-range needs of copying number, all be provided with the code identification code channel that reads for photocoupler on each character wheel of the code-disc mechanism of existing machinery code-disc reading device, the code identification code channel correspondence position of each character wheel is furnished with photocoupler.Its course of work is that the table body drives the character wheel rotation by driven wheel, is provided with between character wheel to be used for the gear wheel that each character wheel is stirred, and realizes the carry of numerical value on each character wheel by gear wheel, finishes mechanical count.Its photoelectric reading principle is: realize remote reading thereby draw coding by extinction on the corresponding character wheel coding of the photocoupler on the photocoupler assembly support code channel and reflector segment.When character wheel numerical value during, can carry out reading accurately fully over against photocoupler; But when character wheel numerical value was between two numbers, misreading appearred in the intersection of corresponding extinction of photocoupler and reflector segment easily.Existing error correcting technique is to count mistake when error code occurring, carries out reading at set intervals by modes such as concentrators, replaces misreading with the correct reading of last time.Like this, just there is the reading of 10% probability to have error, and do not have real accomplishing not copy " passive " when several, increased cost simultaneously.
Summary of the invention
The purpose of this utility model is the deficiency that exists at above-mentioned code-disc reading device, provides a kind of and can discern the also code-disc reading device of the band critical conditions identification of accurate reading to the character wheel critical conditions.
The code-disc reading device of the utility model band critical conditions identification comprises: mechanical code-disc mechanism, and each character wheel is equipped with reading and normal encoding sign code channel, and the photocoupler assembly support of normal encoding sign code channel correspondence position is provided with the reading photocoupler; It is characterized in that: also be provided with critical conditions identification marking code channel on the character wheel; One is used to adjust the stepper motor of photocoupler assembly support angle, and a rotating photocoupler assembly support is connected by gear and stepper motor output shaft; The photocoupler assembly support be provided with character wheel on the corresponding identification photocoupler of critical conditions identification marking code channel; The identification photocoupler is connected with stepper motor by circuit.
The design concept of the code-disc reading device of the utility model band critical conditions identification is: set up critical conditions identification marking code channel on character wheel, become a kind of character wheel with two group code roads, when discerning the reflector segment of the corresponding critical conditions identification marking of photocoupler code channel, then sending signal rotates a certain angle by micro-step motor, proofread and correct the correct location of reading of the normal encoding sign code channel on reading photocoupler and the character wheel, thereby read accurate values; When the identification photoelectric tube does not send signal, illustrate that the reading photocoupler is in the normal position, the numerical value of reading must be accurately.
The code-disc reading device design science of the utility model band critical conditions identification, simple and reasonable for structure, it can really accomplish " passive ", accurately, the numerical value that the numerical value of copy reading whenever and lettered dial window show is in full accord, and need not additional any extra means that critical conditions is handled, both avoid reading error, saved cost again.
The concrete structure of the code-disc reading device of the utility model band critical conditions identification is provided in detail by the following drawings and embodiment.
Description of drawings
Fig. 1 is the structural representation of the code-disc reading device of band critical conditions identification;
Fig. 2 is that the code-disc reading device A-A of band critical conditions shown in Figure 1 identification is to structural representation;
Fig. 3 is this device critical conditions analysis chart.
Embodiment
Embodiment: can be clear that from Fig. 1,2 the code-disc reading device of band critical conditions identification comprises shell 1, many character wheels 2, is used for gear wheel 3, one rotating photocoupler assembly support 4 that each character wheel 2 stirs, is used to adjust the stepper motor 6 of photocoupler assembly support 4 angles with first character wheel 2 coaxial installation driven wheels 5,, photocoupler assembly support 4 is connected by gear and stepper motor 6 output shafts.The circumferential surface of described character wheel 2 is divided into three parts along its Width, and one is that 9, one of code channels of critical conditions identification between character wheel 2 per two numerical value are that 7, one of normal encoding code channels are manual read's fractional parts 8. Code channel 7,9 is formed by reflector segment 10 and extinction part 11.Photocoupler assembly support 4 is provided with reading photocoupler 12 and identification photocoupler 13 corresponding to 7,9 positions of code channel on the character wheel 2.
The mechanical code-disc mechanism course of work of the code-disc reading device of this band critical conditions identification is identical with existing code-disc reading device, its photocoupler reading process as shown in Figure 3, when reading photocoupler 12 is in shown position with identification photocoupler 13, identification photocoupler 13 is in " critical section ", reading photocoupler 12 is between 1,2 and 9,0, if there is not the critical localisation recognition function, then may read 10,29 two wrong numbers.This moment is because identification photocoupler 13 is aimed at the reflector segment 11 of identification code channel, make 18 ° of stepper motor 6 rotations so send signal, make identification photocoupler 13 arrive " normal district ", reading photocoupler 12 is over against 1 and 9, the numerical value of reading is 19, and this numerical value is accurately.
The double-digit situation of only giving an example among the figure, other situation principle unanimity repeats no more here.
Can draw by above-mentioned analysis: no matter which kind of position character wheel 2 forwards to, identification photocoupler 13 all can cooperate by the reflector segment that itself and critical conditions are discerned on the code channel 9, immediately adjust the rotational angle of photocoupler support 4, make identification photocoupler 13 can be in " the normal district " of critical conditions identification code channel 9, thereby guaranteed the accuracy of reading.
As for normal coding, method is a lot, and taking a single example here underdraws: put back mating plate 0,1,6,7,8 five position, read four positions, for example:
If: existing window value is 0
Draw: 0:0001 1:0011 2:0111 3:1110 4:1101
5：1011 6：0110 7：1100 8：1000 9：0000
Annotate: the reading of four positions can repeatedly be rotated 36 ° by one group of photocoupler and realized, also can use four groups of photocouplers to realize.
Claims (1)
1, a kind of code-disc reading device with critical conditions identification comprises: mechanical code-disc mechanism, and each character wheel is equipped with reading and normal encoding sign code channel, and the photocoupler assembly support of normal encoding sign code channel correspondence position is provided with the reading photocoupler; It is characterized in that: each character wheel is equipped with critical conditions identification marking code channel; One is used to adjust the stepper motor of photocoupler assembly support angle, and a rotating photocoupler assembly support is connected by gear and stepper motor output shaft; The photocoupler assembly support is provided with the identification photocoupler corresponding with critical conditions identification marking on each character wheel; The identification photocoupler is connected with stepper motor by circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119588 CN2697595Y (en) | 2003-12-19 | 2003-12-19 | Code wheel reading out device with critical state detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320119588 CN2697595Y (en) | 2003-12-19 | 2003-12-19 | Code wheel reading out device with critical state detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697595Y true CN2697595Y (en) | 2005-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320119588 Expired - Fee Related CN2697595Y (en) | 2003-12-19 | 2003-12-19 | Code wheel reading out device with critical state detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697595Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102257361A (en) * | 2008-12-19 | 2011-11-23 | 约翰尼斯海登海恩博士股份有限公司 | Revolution counter and method for determining the number of revolutions of a shaft |
| CN102338649A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Counter based on photoelectric transmitting and receiving sensor and method for implementing counter |
| CN102393233A (en) * | 2010-09-15 | 2012-03-28 | 上海复展照明科技有限公司 | Photoelectric transceiving sensor based counter and implementation method thereof |
| CN101865703B (en) * | 2010-01-08 | 2012-06-27 | 钱杭妹 | Coding counter of remote transmission instrument |
-
2003
- 2003-12-19 CN CN 200320119588 patent/CN2697595Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102257361A (en) * | 2008-12-19 | 2011-11-23 | 约翰尼斯海登海恩博士股份有限公司 | Revolution counter and method for determining the number of revolutions of a shaft |
| CN102257361B (en) * | 2008-12-19 | 2014-08-20 | 约翰内斯·海德汉博士有限公司 | Revolution counter and method for determining the number of revolutions of a shaft |
| US8990044B2 (en) | 2008-12-19 | 2015-03-24 | Dr. Johannes Heidenhain Gmbh | Revolution counter and method for determining the number of revolutions of a shaft |
| CN101865703B (en) * | 2010-01-08 | 2012-06-27 | 钱杭妹 | Coding counter of remote transmission instrument |
| CN102393233A (en) * | 2010-09-15 | 2012-03-28 | 上海复展照明科技有限公司 | Photoelectric transceiving sensor based counter and implementation method thereof |
| CN102338649A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Counter based on photoelectric transmitting and receiving sensor and method for implementing counter |
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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 |