CN203908568U - Reading device of mechanical counter wheel and remote metering device - Google Patents
Reading device of mechanical counter wheel and remote metering device Download PDFInfo
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- CN203908568U CN203908568U CN201420276970.XU CN201420276970U CN203908568U CN 203908568 U CN203908568 U CN 203908568U CN 201420276970 U CN201420276970 U CN 201420276970U CN 203908568 U CN203908568 U CN 203908568U
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Abstract
The utility model provides a reading device of a mechanical counter wheel and a remote metering device and belongs to the metering technical field. The reading device is used for solving a problem of low reliability of a conventional reading device and comprises a counter wheel, two photoelectric sensors and a single-chip microcomputer connected with the photoelectric sensors. Light-transparent grooves in different sizes are disposed on the side surface of the counter wheel along the counting direction according to a certain rule. The side positions of two numbers of the numbers 0 to 9 are not equipped with holes and the side positions of the rest eight numbers are equipped with three continuous light-transparent holes in different sizes. Each photoelectric sensor comprises a light emitting tube and a light receiving tube that are correspondingly and fixedly arranged on the two sides of the light-transparent grooves of the counter wheel. The light emitting tubes of the two photoelectric sensors are controlled by the single-chip microcomputer to emit light. The single-chip microcomputer receives and decodes output signals of the light receiving tubes so as to obtain the current number of the counter wheel. The reading device has advantages of simple circuit structure, accurate sensing data, high reliability, and low running failure rate.
Description
Technical field
The utility model relates to a kind of reading device and long-distance metering instrument of mechanical count wheel, belongs to identification and the processing technology field of measuring instrument data.
Background technology
The measuring instruments such as traditional ammeter, water meter, gas meter all adopt mechanical type register, are a kind of artificial direct-reading summary counters.The outstanding advantages of this class mechanical type register is just can measure (as water meter, gas meter) by power supply, and shortcoming is that manually reading is checked meter.
Along with social progress, the development of electronic technology and network communication, last century the nineties, people start application electric technology the ammeter of mechanical type meter degree, water meter, gas meter count value are carried out to long-range reading, and carry out Display and Print (being remote meter reading) by wired and wireless network transmissions to computer center.
About the long-range existing a lot of public technologies of the method and apparatus of checking meter that read, for example, adopt the patent document that wheel type electronic is checked meter just to have up to a hundred more than.Can see from disclosed patent documentation, carrying out the long-range solution reading more to measuring instruments such as ammeter, water meter, gas meters is to count by pulsed to carry out digitized processing, by the number of revolutions of a certain rotatable parts of this instrument is carried out to pulse output metering by light, magnetic or resonant inducing mode etc., a pulse or pulse group are once just exported in every rotation, then are carried out digitized processing and added up and store by one-chip computer.But this mode shortcoming is to be easily disturbed; There is no electric measuring instrument for mechanical water meter or gas meter etc., pulse metering device must ensure the external electricity of overall process in metering, easily causes metering inaccurate in the time of power-off.Developed afterwards contactless electronic reading device, the Chinese patent that is 00208157.1 as the patent No. discloses the mechanical rotary-type counter that a kind of electronic digitalizing reads, and the patent No. Chinese patent that is 00105255.1 discloses a kind of electronic digitalizing read method of mechanical rotary-type counter.Its digitizing read be by emission of light to digital runner, on digital runner, the region of corresponding reading is echo area or uptake zone, the reflected light of four open the light volume sensor detection of reflected district or uptake zones, and being judged as out (1) or (0) state of closing, the state of arranging by four digital differences that sense is determined the definite reading in vision area.Above-mentioned two patent documentations can carry out contactless electronic to measuring instrument and read, solve the problems such as the secondary measurement that step-by-step counting brings, still, read because the two all adopts switching regulator sensor to carry out electronics, be easy to cause reading inaccurate, be difficult to apply.
In addition, research is found, there is the mounting means that need to change water, electricity, gas pipeline in the wheeled and various electronic remote metering water meters of existing machinery, ammeter, gas meter, exist volume large, transmission data are unstable, reading error is large, high in cost of production shortcomings, and what really should use is few.
The shortcoming existing according to electronic remote measuring instrument, application number is the contactless electronic reading sensing device that the Chinese patent application of CN01106500.1 discloses a kind of mechanical type instrument, and the Chinese patent application that application number is CN00122436.0 discloses a kind of self-correction multifunctional electronic power meter and network thereof, the two is large to measuring instrument volume, and transmission data are unstable a further improvement.
But in existing disclosed contactless electronic reading sensing device, still there is the outstanding shortcomings such as reading error, particularly in photoelectric reading method for sensing and device, the inductive head of the sensor of reading device generally has electronic noise, in some cases, electronic noise may have been covered the actual signal sensing, or also stronger than actual signal, thereby causes the generation of misreading; In addition, the digital runner of measuring instrument has the vision area for reading on people's visual inspection runner, therefore in the situation that ambient light enters measuring instrument and irradiates digital runner from vision area, increase the reflected light of digital runner, result sensor detects wrong signal, such as responding to less than catoptrical, due to the impact of bias light, light detected mistakenly, thereby think that this region is high-reflection region.All above-mentioned defects all must cause correctly reading of existing reading device, or can not steady operation.
In order to change the impact of reflected light (bias light), application number is a kind of electronic reader and the method thereof that the Chinese patent application of CN200510035995.6 discloses mechanical rotary-type counter, and the Chinese patent application that application number is CN200510036371.6 provides a kind of electronic reader of rotary-type counter.
Aspect physical construction, the Chinese patent application that application number is CN201110274440.2 provides a kind of direct-reading water meter register, and it improves the inner reading wheel of electronic remote measuring instrument and installation of sensors mode.This direct-reading electronic register is compared with technology before, maximum feature is: induction installation is arranged on runner or rotating disk side, on runner or rotating disk, be provided with reading, reading region is sensed district, induction installation is a nalog quantity type photoelectric sensor, sensed district is aberration reflective areas, and electronical reading is the difference of rejecting after background noise.This register experience on probation shows: it has, and cost is low, sensing data accurately, the advantage such as dependable performance, operational failure rate be low.
But in practice process, find that this direct-reading electronic register also exists following problem:
1, due to single-chip microcomputer and sensor line many, so be all that single-chip microcomputer is placed in the water environment of water meter inside, if seal bad, easily damage.
2, aspect the sensor of installing in housing, be to adopt 4 to cause complex process with upper sensor at present mostly, it is large that volume becomes, poor reliability.
In order to solve the problem of said structure aspect, application number is the open a kind of full liquid-sealing water meter counter of the Chinese patent application of CN201210268166.2, it comprises character wheel box, digit wheel, gear drive, driving wheel and photoelectric counter, gear drive, digit wheel, driving wheel and photoelectric counter are all installed in character wheel box, driving wheel is arranged on the top of digit wheel, and engage with digit wheel, photoelectric counter is arranged on side or the bottom of digit wheel, in the cavity of character wheel box, be full of the low water white spacer pad of density ratio water, photoelectric counter can whole bubble in spacer pad, gear drive is exported from the bottom of character wheel box after by impeller transmission, have reasonable in design, simple in structure, counting degree of accuracy is high, the features such as wide adaptability.
For the sensor problem that induction installation exists in other words, at present still without reliable solution, the technology that mostly still adopts Chinese patent application that technology that Chinese patent application that conventional art or application number are CN200510035995.6 provides or application number are CN200510036371.6 to provide, in the time of a sensor failure, may cause the remote reading function of whole measuring instrument to move.
Utility model content
The purpose of this utility model is to provide a kind of reading device and long-distance metering instrument of mechanical count wheel, to solve the problems such as complex structure, read untrue, reliability that prior art exists are low.
The reading device of a kind of mechanical count wheel that the utility model provides, comprises counter wheel, two photoelectric sensors and the single-chip microcomputer being connected with described photoelectric sensor; Described counter wheel side has light tank not of uniform size according to certain rules along counting direction; Each photoelectric sensor comprises that correspondence is fixedly installed on light-emitting tube and the light receiving tube of the light tank both sides of described counter wheel, and the core wheel line of the center of described two photoelectric sensors and described counter wheel is fixed into 36 degree central angles; The structure of described light tank is: in the lateral location of the digital 0-9 of described counter wheel, retain two digital not perforates of lateral location, three kinds of light holes that vary in size of remaining 8 digital side openings are that light hole becomes again little from little change continuously greatly again along the Changing Pattern of the counting direction light tank of counter wheel.
Preferably, the light tank structure of described counter wheel side is: the lateral location in the numeral 0,1 of described counter wheel is light tight hole, lateral location in numeral 2,8,9 has little light hole, lateral location in numeral 3,6,7 has middle light hole, has large light hole in the lateral location of numeral 4,5.
The utility model also provides a kind of long-distance metering instrument, comprises the reading device of above-mentioned any mechanical count wheel.
The beneficial effect of technique scheme of the present utility model is as follows:
The reading device of the mechanical count wheel that the utility model provides adopts to be offered and changes according to certain rules big or small light tank in the side of counter wheel, and the dual sensor that series connection is set is measured by the light tank transmittance of the Contemporary Digital correspondence position left and right sides, make the light tank transmittance difference that different digital is corresponding, thereby the light receiving tube of photoelectric sensor can receive the light signal of different sizes, the photosignal that the light receiving tube that photoelectric sensor is measured receives is received the built-in A/D converter of single-chip microcomputer, single-chip microcomputer converts simulating signal to digital signal, then process the numeral that can obtain current counter wheel, this apparatus structure is simple, cost is low, be easy to realize, and after electronical reading is processed via single-chip microcomputer, it can be the difference of rejecting after background noise, have without identification blind area, the advantages such as sensing data is accurate, in addition, the utility model adopts dual sensor reading, while making a sensor failure, this device still can be realized reading function, operational failure rate is low, reliability is high.
Brief description of the drawings
The reading device structural representation that Fig. 1 takes turns for the mechanical count that the utility model embodiment provides;
Fig. 2 is the side view of Fig. 1;
The connecting circuit figure of photoelectric sensor and single-chip microcomputer in the reading device of the mechanical count wheel that Fig. 3 provides for the utility model.
[main description of reference numerals]
1, light tank;
2, light-emitting tube;
3, light receiving tube;
4, counter wheel;
5, the first photoelectric sensor;
6, the second photoelectric sensor;
7, single-chip microcomputer.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
In order to solve existing technology wheel reading device complex structure, the problem such as be easily disturbed and reliability is low, the utility model provides a kind of reading device of mechanical count wheel, and it can be applied to water meter, ammeter, gas meter, gas meter, flow meter etc., is preferably applied to water meter.
The reading device structural representation that Fig. 1 takes turns for the mechanical count that the utility model embodiment provides, the side view that Fig. 2 is Fig. 1.As shown in Figure 1, the reading device of mechanical count wheel of the present utility model comprises counter wheel 4, the first photoelectric sensor 5, the second photoelectric sensor 6 and the single-chip microcomputer 7 being connected with photoelectric sensor.Counter wheel 4 sides have light tank not of uniform size 1 according to certain rules along counting direction; The structure of light tank 1 is: in the lateral location of the digital 0-9 of counter wheel 4, retain two digital not perforates of lateral location, three kinds of light holes that vary in size of remaining 8 digital side openings are that light hole becomes again little from little change continuously greatly again along the Changing Pattern of the counting direction light tank of counter wheel 4.Each photoelectric sensor comprise for emit beam and by the light-emitting tube 2 of the light tank 1 on the light directive sending and that see through from described light tank 1 for receiving, come from the light of light-emitting tube 2 and light signal be converted to the light receiving tube 3 of electric signal, that is: light-emitting tube 2 and light receiving tube 3 correspondences are fixedly installed on the both sides of the light tank 1 of counter wheel 4.The center of first, second photoelectric sensor 5,6 and the core wheel of counter wheel 4 are wired to 36 degree central angles.The light that light-emitting tube sends is after the light tank of the digital side different by counter wheel 4, because the openings of sizes of light tank differs, therefore light receiving tube 3 obtains different transmittances, two A/D ports of single-chip microcomputer 7 are by measuring respectively the output signal of light receiving tube 3, thereby obtain the reading of counter wheel 4.
Figure 3 shows that the connecting circuit figure of photoelectric sensor and single-chip microcomputer in the reading device of the mechanical count wheel that the utility model provides, wherein, anode after the light-emitting tube series connection of the first photoelectric sensor T1 and the second photoelectric sensor T2 is connected with an I/O port PB1 of single-chip microprocessor MCU, and its negative terminal is by the 3rd resistance R 3 ground connection; The collector of the light receiving tube of photoelectric sensor T1, T2 is all connected with the I/O port PB1 of single-chip microprocessor MCU; The emitter of the light receiving tube of photoelectric sensor T1 is connected with an A/D input port ADC0 of single-chip microcomputer, and port ADC0 is by the first resistance R 1 ground connection; The emitter of the light receiving tube of photoelectric sensor T2 is connected with the 2nd A/D input port ADC1 of single-chip microcomputer, and port ADC1 is by the second resistance R 2 ground connection.
When application, the I/O port PB1 output low level of single-chip microprocessor MCU, first, second photoelectric sensor T1, T2 do not work, while needing reading, first the light-emitting tube of photoelectric sensor does not work, and then gives port PB1 output high level, and now single-chip microprocessor MCU is by reading analog port ADC0-ADC1, can obtain the static numerical value of the light receiving tube output in first, second photoelectric sensor: A1, A2.Carry out numerical value processing through single-chip microprocessor MCU, the transmittance numerical value of the light tank of pre-set all size, can obtain the one coding of counter wheel numeral 0-9, thus the numeral that the output valve A1 of two light receiving tubes that can obtain according to single-chip microprocessor MCU, A2 know current counter wheel by inference.
Preferably, as shown in Figure 2, lateral location at the digital 0-1 of counter wheel is light tight hole, lateral location in numeral 2 is opened little light hole, lateral location in numeral 3 is opened middle light hole, open large light hole in the lateral location of digital 4-5, open middle light hole in the lateral location of digital 6-7, open little light hole in the lateral location of digital 8-9, first, light-emitting tube in the second photoelectric sensor is luminous, light sees through light tank not of uniform size on counter wheel and reaches light receiving tube, light receiving tube obtains different transmittances and just produces corresponding strong and weak signals, after the A/D of single-chip microprocessor MCU port ADC0-ADC1 receives and processes, become digital signal, the relatively digital reading of this two paths of signals, can judge the position that counter wheel rotates, thereby obtain the numeral of current the counted 0-9 of counter wheel.As the transmittance of maximum light groove we to adjust be 3, the transmittance of intermediate light groove we to adjust be 2,, the transmittance of minimum light groove we to adjust be 1, the transmittance of unglazed groove we to adjust be 0, the coding that MCU obtains after processing is as shown in table 1 below:
Table 1 counter wheel numeral and corresponding coding
What deserves to be explained is, single-chip microprocessor MCU shown in Fig. 3 is AVR single-chip microcomputer, but the utility model is not limited to this, other single-chip microcomputers well known in the art and digital signal processor also can be used as signal handling equipment of the present utility model, such as MCS51 single-chip microcomputer etc.
The reading device embodiment of above-mentioned arbitrary mechanical count wheel all can be applied to polytype long-distance metering instrument, realizes the remote meter reading of this measuring instrument.Therefore the utility model also provides a kind of long-distance metering instrument, before the reading device of any mechanical count wheel.
The reading device of the mechanical count wheel that the utility model provides adopts to be offered and changes according to certain rules big or small light tank in the side of counter wheel, and the dual sensor that series connection is set is measured by the light tank transmittance of the Contemporary Digital correspondence position left and right sides, make the light tank transmittance difference that different digital is corresponding, thereby the light receiving tube of photoelectric sensor can receive the light signal of different sizes, the photosignal that the light receiving tube that photoelectric sensor is measured receives is received the built-in A/D converter of single-chip microcomputer, single-chip microcomputer converts simulating signal to digital signal, then process the numeral that can obtain current counter wheel, this apparatus structure is simple, cost is low, be easy to realize, and after electronical reading is processed via single-chip microcomputer, it can be the difference of rejecting after background noise, have without identification blind area, the advantages such as sensing data is accurate, in addition, the utility model adopts dual sensor reading, while making a sensor failure, this device still can be realized reading function, operational failure rate is low, reliability is high.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a reading device for mechanical count wheel, is characterized in that, comprises counter wheel, two photoelectric sensors and the single-chip microcomputer being connected with described photoelectric sensor; Described counter wheel side has light tank not of uniform size according to certain rules along counting direction; Each photoelectric sensor comprises that correspondence is fixedly installed on light-emitting tube and the light receiving tube of the light tank both sides of described counter wheel, and the core wheel line of the center of described two photoelectric sensors and described counter wheel is fixed into 36 degree central angles; The structure of described light tank is: in the lateral location of the digital 0-9 of described counter wheel, retain two digital not perforates of lateral location, three kinds of light holes that vary in size of remaining 8 digital side openings are that light hole becomes again little from little change continuously greatly again along the Changing Pattern of the counting direction light tank of counter wheel.
2. the reading device of mechanical count wheel according to claim 1, it is characterized in that, a kind of light tank structure of described counter wheel side is: the lateral location in the numeral 0,1 of described counter wheel is light tight hole, lateral location in numeral 2,8,9 has little light hole, lateral location in numeral 3,6,7 has middle light hole, has large light hole in the lateral location of numeral 4,5.
3. a long-distance metering instrument, is characterized in that, comprises the reading device of the mechanical count wheel described in claim 1-2 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276970.XU CN203908568U (en) | 2014-05-28 | 2014-05-28 | Reading device of mechanical counter wheel and remote metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276970.XU CN203908568U (en) | 2014-05-28 | 2014-05-28 | Reading device of mechanical counter wheel and remote metering device |
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| Publication Number | Publication Date |
|---|---|
| CN203908568U true CN203908568U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420276970.XU Expired - Fee Related CN203908568U (en) | 2014-05-28 | 2014-05-28 | Reading device of mechanical counter wheel and remote metering device |
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| CN (1) | CN203908568U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894244A (en) * | 2017-12-27 | 2018-04-10 | 上海韦奇传感科技有限公司 | A kind of high-resolution photoelectric encoder |
| CN108195409A (en) * | 2018-02-08 | 2018-06-22 | 金卡智能集团股份有限公司 | A kind of counter and measuring instrument based on light reflection |
| CN112345014A (en) * | 2020-11-03 | 2021-02-09 | 上海真兰仪表科技股份有限公司 | Direct reading counter using color recognition technology |
-
2014
- 2014-05-28 CN CN201420276970.XU patent/CN203908568U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894244A (en) * | 2017-12-27 | 2018-04-10 | 上海韦奇传感科技有限公司 | A kind of high-resolution photoelectric encoder |
| CN108195409A (en) * | 2018-02-08 | 2018-06-22 | 金卡智能集团股份有限公司 | A kind of counter and measuring instrument based on light reflection |
| CN112345014A (en) * | 2020-11-03 | 2021-02-09 | 上海真兰仪表科技股份有限公司 | Direct reading counter using color recognition technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20160528 |