CN101122480A - Ternary system clobber-free number wheel code disk sensor - Google Patents
Ternary system clobber-free number wheel code disk sensor Download PDFInfo
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- CN101122480A CN101122480A CNA2007100391081A CN200710039108A CN101122480A CN 101122480 A CN101122480 A CN 101122480A CN A2007100391081 A CNA2007100391081 A CN A2007100391081A CN 200710039108 A CN200710039108 A CN 200710039108A CN 101122480 A CN101122480 A CN 101122480A
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- character wheel
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- clobber
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Abstract
A ternary non-clobber character wheel dial sensor includes a mechanical counter frame, a mechanical character wheel arranged on a shaft in the frame, flexile printed circuits inserted in the character wheel and a connecting bottom plate. The sensor is characterized in that the radial plane of the character wheel is zoned and coded according a ternary coding method. The left flexible printed circuit of the character wheel is equipped with three light emitting diodes for lighting. The relative position of the right flexible printed circuit is equipped with three receiving triodes for reading. The flexible printed circuit is electrically connected with a microprocessor through the connecting bottom plate bus. The beneficial effects of the invention are that binary code discs are substituted by ternary code discs. No clobber is on any position of a code disc. Compared with a present five bits binary code disc, the quantity of the photodiodes and photo triodes is reduced by two fifths. And the aims of simple structure, convenience, practicality and lowered cost are achieved. The invention can be applied various metering instruments using mechanical counter and absolute code angle displacement sensors.
Description
Technical field
The invention belongs to the code disc optoelectronic digital conversion technique, be specifically related to a kind of character wheel code-disc sensor that uses the three-shift compiling method digital quantity opto-electronic conversion of mechanical code-disc to be become electric signal output.
Background technology
Over past ten years, there are a series of long-range direct-reading water meters, gas meter, ammeter, product to come out.Chinese patent " character wheel code disc optoelectronic digital intelligent sensor " (ZL.98203808.9) has been realized the teletransmission function of measuring of measuring instrument mechanical character wheel counter video data.It is designed to photoelectricity character wheel code-disc with character wheel, inserts frame-type photoelectricity bus plug in component in the character wheel gap, utilizes bus mode to read corresponding character wheel data from the code-disc sector.It is applicable to that various employing mechanical counters measure the measuring instrument of demonstration.Owing to adopted microprocessor and bus communication technology, be specially adapted to remote automatic meter reading.Has no secondary transformed error; Only at the moment power supply of checking meter, start sensor " meter reading "; Realize series of advantages such as Sefe antiexplosion easily.But no matter be the character wheel code-disc of delivering on the ZL.98203808.9 Chinese patent, or the character wheel code-disc in the current production, employing all be the binary coding mode.The ZL.98203808.9 Chinese patent adopts the tetrad coding method, designs the coding print wheel of four concentric circumferences, but not in placely can produce mess code because character wheel rotates, makes the meter reading can't identification.In the commercialization process, owing to easily producing this reason of mess code, design five binary coding code-discs (Fig. 1, table 1) again, from Fig. 1 as seen, five binary coded decimal coding code-discs of prior art are perforates on same circumference.
Corresponding five binary-decimal character wheel code-disc code values are shown in table 1.By table 1 as seen, all have 3 binary numbers to change each time in the stepping simultaneously, " transition state " uncertain sign indicating number is a lot, and the possibility that character wheel rotates generation mess code not in place is big.The actual result that uses still can not eliminate mess code fully, has also increased software complexity and hardware cost.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of energy and realizes that any code-disc position does not have mess code, character wheel code-disc sensor simple in structure, easy to use newly designs.
Technical scheme of the present invention is: ternary system clobber-free number wheel code disk sensor, comprise the mechanical counter framework, be installed in the mechanical character wheel in the rotating shaft in the described framework, be inserted between the described character wheel flexible circuit board be connected base plate, it is characterized in that: the sagittal plane of described character wheel is by three-shift compiling method zonal coding, the left side flexible circuit board of character wheel is equipped with three infrarede emitting diodes, three receive only triode and read sign indicating number with what place flexible circuit board relevant position, character wheel right side, flexible circuit board is electrically connected with microprocessor by described connection backplane bus.
Five binary-decimal character wheels of table 1 code-disc code value table
The sagittal plane of described character wheel by three-shift compiling method zonal coding method is: corresponding ten tens digits in the sagittal plane of described character wheel are divided into ten sectors, printing opacity or reflected light by three-shift be divided into height " H ", in " M ", low " L " third-class, make 0 of the decimal system and " H ", " H ", " H " corresponding, and by three three-decimal system character wheel code-disc code value tables codings.
Beneficial effect of the present invention: replace the scale-of-two code-disc with three three-shift code-discs, realize that any code-disc position do not have mess code,, reduce by 2/5 photodiode and phototriode quantity than five current scale-of-two code-discs, reached simple in structure, convenient and practical, the purpose that cost reduces.Can be applicable to all kinds of use mechanical counters measuring instrument and and the basic code angular displacement sensor in.
Description of drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Five binary-decimal character wheels of Fig. 1 sagittal plane arrangenent diagram;
Fig. 2 sensor construction synoptic diagram of the present invention;
Fig. 3 flexible circuit board left view;
Fig. 4 flexible circuit board right view; ,
Three three-decimal system character wheels of Fig. 5 sagittal plane arrangenent diagram;
Fig. 6 direct-injection type (or reflective) photoelectric code disk detection line figure.
Among the figure, 1. mechanical counter framework; 2. flexible circuit board; 3. character wheel code-disc; 4. connection base plate; 5. light emitting diode; 6. reception phototriode.
Embodiment
Fig. 2 is a ternary system clobber-free number wheel code disk sensor structural representation of the present invention, comprise mechanical counter framework 1, be installed in the mechanical character wheel 3 in the rotating shaft in the described framework 1, be inserted between the described character wheel 3 flexible circuit board 2 be connected base plate 4.Among the figure by 5 decimal system character wheels 3,0
#～5
#Totally 6 double-faced flexible wiring boards 2 are formed.Fig. 3 and Fig. 4 show the left and right view of flexible circuit board.In the left side of described character wheel 3, promptly be equipped with three light emitting diodes 5 on the right side of flexible circuit board 2, the relevant position, left side of flexible circuit board 2 is equipped with three and receives only the infrared light that triode 6 is accepted incident, is used to read the word bit that sign indicating number detects character wheel 0～9.0
#2 of flexible circuit board receive the infrared light that triode 6 is accepted incident, 5 with photoelectricity
#2 of flexible circuit board are with light emitting diode 5 emission infrared lights.Five groups of flexible circuit board are made up a corresponding character wheel position and arrive myriabit:
1. trit only changes 1 figure place in decimal number 0 → 7 and 9 → 0 the each rotation change procedure, and this one digit number only is H → M, M → H or M → L, and L → M changes, and no matter character wheel puts in place, or not in placely can not go out the Now mess code.
2. decimal number 7 → 8, and 8 → 9 have 2 trits to change simultaneously when rotate changing, and might produce 4 kinds of transition codes: promptly 7 → 8: " H L L " or " M M L "; 8 → 9: " H H L " or " H M M ".These 4 kinds of possible transition codes, they are all inequality with 10 kinds of codings having used, so transition code " H L L " and " M M L " can do " 7 " and also can do " 8 " and handle, and transition code " H H L " and " H M M " can do " 8 ", also can do " 9 " processing.The concrete method of discrimination 3. intelligent distinguishing explanation of character wheel carry of face as follows.
3. the intelligent distinguishing of character wheel carry: the character wheel carry at first is to be produced by individual position character wheel 9 → 0, and finishes the rotation of all character wheels when individual position character wheel puts in place.All character wheels all stopped operating when just the Q1 position signal of position character wheel reached high-grade H.Therefore as long as judge Q1 position signal V
I1Whether % reaches high-grade H (100%), and whether a decision position arrives " 0 ".When individual position was " 9 ", all character wheels were all got former number, comprise " H L L " " M M L " conduct " 7 ", and " HHL " " H M M " work " 8 " is handled; When individual position was " 0 ", the transition state of all character wheels was all got the carry sign indicating number, comprises " H L L ", " M M L " work " 8 ", and " H H L " " H M M " work " 9 " is handled.This shows when single character wheel turns to any position 14 kinds of ternary codes of above analysis only may occur, they can determine it is the decimal number of a correspondence.
Three three-decimal system character wheels of table 2 character wheel code-disc code value table,
Be to be example in the above embodiment with the transmitted light.Equally, three three-decimal system character wheel character wheel code-disc weaves also are applicable to reflected light.
Direct-injection type (or reflective) photoelectric code disk detection line as shown in Figure 6.Each character wheel 3 is formed one group of three three-shift photoelectric tube by 2 three infrarede emitting diodes 5 of left side flexible circuit board and 2 three corresponding phototriodes 6 of right side flexible circuit board, five character wheels, amount to 15 pairs of photoelectric tubes, adopt by microprocessor the pipe scan mode is detected.The position choosing of decimal system character wheel is that low level is put in the i position position route selection of correspondence, even the emitting diode negative electrode of selected bit all is changed to low level, the pipe that will detect the j pipe again selects signal to be changed to high level, selected D
IjDiode current flow, this is done the plumber, from the phototriode emitter output simulating signal V of correspondence
IjSend the A/D port of microprocessor to detect.Each character wheel triplicate, Guan Xuan is respectively j
1, j
2, j
3, output signal V
I1, V
I2, V
I3Detect the decimal number of judging this character wheel through microprocessor.Five decimal system character wheel one group number-readings scan 15 times altogether.
Three light emitting diodes 5 that the left side flexible circuit board 2 of character wheel 3 is equipped with are luminous, and by character wheel 3 photic zone printing opacities, what flexible circuit board 2 relevant positions in right side were equipped with three receives only triode 6 and read sign indicating number, connect base plate 4 by 8 buses with 0
#～5
#6 flexible circuit board 2 are connected in aggregates with microprocessor, power supply.
Claims (2)
1. ternary system clobber-free number wheel code disk sensor, comprise mechanical counter framework (1), be installed in the mechanical character wheel (3) in described framework (1) rotating shaft, be inserted between the described character wheel (3) flexible circuit board (2) be connected base plate (4), it is characterized in that: the sagittal plane of described character wheel (3) is by three-shift compiling method zonal coding, it is luminous that the left side flexible circuit board (2) of described character wheel (3) is equipped with three light emitting diodes (5), what relevant position, right side flexible circuit board (2 ') was equipped with three receives only triode (6) and reads sign indicating number, and described flexible circuit board (2) is electrically connected with microprocessor by described connection base plate (4) bus.
2. according to the described ternary system clobber-free number wheel code disk sensor of claim 1, the sagittal plane that it is characterized in that described character wheel (3) by three-shift compiling method zonal coding method is: corresponding ten tens digits in described character wheel (3) sagittal plane are divided into ten sectors, printing opacity or reflected light by three-shift be divided into height " H ", in " M ", low " L " third-class, make 0 of the decimal system and " H ", " H ", " H " corresponding, and by three three-decimal system character wheel code-disc code value table requirements codings:
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100391081A CN100549629C (en) | 2007-04-04 | 2007-04-04 | Ternary system clobber-free number wheel code disk sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100391081A CN100549629C (en) | 2007-04-04 | 2007-04-04 | Ternary system clobber-free number wheel code disk sensor |
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| Publication Number | Publication Date |
|---|---|
| CN101122480A true CN101122480A (en) | 2008-02-13 |
| CN100549629C CN100549629C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100391081A Expired - Fee Related CN100549629C (en) | 2007-04-04 | 2007-04-04 | Ternary system clobber-free number wheel code disk sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104598963A (en) * | 2015-01-21 | 2015-05-06 | 天津万和医疗器械有限公司 | Counting device and medical apparatus using the same |
| CN106525184A (en) * | 2016-11-04 | 2017-03-22 | 湖南威铭能源科技有限公司 | Accurate reading method of photoelectric direct reading water meter |
| CN109738029A (en) * | 2019-01-14 | 2019-05-10 | 深圳市千宝通通科技有限公司 | A kind of dry intelligent table of integral type |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59409167D1 (en) * | 1993-12-23 | 2000-04-06 | Gas & Wassermesserfab Ag | Process for the electrical readout of a multi-digit roller counter for a volume measuring device |
| ES2304186T3 (en) * | 1998-02-27 | 2008-09-16 | Mr Engineering Ag | READING DEVICE FOR A ROLLER COUNTER. |
| CN2336328Y (en) * | 1998-04-21 | 1999-09-01 | 赵向荣 | Optoelectronic digital intelligent sensor for character wheel |
| CN1344910A (en) * | 2001-10-10 | 2002-04-17 | 杭州竞达电子有限公司 | Absolute meter reading encoding method |
| CN2788140Y (en) * | 2005-04-18 | 2006-06-14 | 张厚珕 | Photoelectrical reading decimalized mechanical counter |
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2007
- 2007-04-04 CN CNB2007100391081A patent/CN100549629C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104598963A (en) * | 2015-01-21 | 2015-05-06 | 天津万和医疗器械有限公司 | Counting device and medical apparatus using the same |
| CN104598963B (en) * | 2015-01-21 | 2018-04-20 | 刘晓林 | A kind of counting device and use its medical instrument |
| CN106525184A (en) * | 2016-11-04 | 2017-03-22 | 湖南威铭能源科技有限公司 | Accurate reading method of photoelectric direct reading water meter |
| CN106525184B (en) * | 2016-11-04 | 2019-10-15 | 湖南威铭能源科技有限公司 | The pin-point reading method of photoelectric direct-reading water meter |
| CN109738029A (en) * | 2019-01-14 | 2019-05-10 | 深圳市千宝通通科技有限公司 | A kind of dry intelligent table of integral type |
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| CN100549629C (en) | 2009-10-14 |
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