CN203587128U - Remote metering device and counter reading device thereof - Google Patents
Remote metering device and counter reading device thereof Download PDFInfo
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- CN203587128U CN203587128U CN201320688644.5U CN201320688644U CN203587128U CN 203587128 U CN203587128 U CN 203587128U CN 201320688644 U CN201320688644 U CN 201320688644U CN 203587128 U CN203587128 U CN 203587128U
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Abstract
The utility model provides a remote metering device and a counter reading device thereof. The counter reading device comprises a digit wheel, a plurality of groups of photoelectric sensors, and a singlechip connected with the photoelectric sensors. The digit wheel comprises a plurality of counter wheels on different digits. Each group of the photoelectric sensors is corresponding to each counter wheel. Each photoelectric sensor comprises luminotrons and an optical receiving tube, wherein each group of photoelectric sensors comprise two photoelectric sensors, and the luminotrons of the two photoelectric sensors in a same group are connected in series. The remote metering device and the counter reading device are advantaged by low cost, accurate sensing data, reliable performance, low operating failure rate, etc.
Description
Technical field
The utility model relates to a kind of long-distance metering instrument, relates in particular to the counter reading device of long-distance metering instrument, 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 by wired and wireless network transmissions, to computer center, carry out Display and Print (being remote meter reading).
The relevant 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.From disclosed patent documentation, can see, to measuring instruments such as ammeter, water meter, gas meters, carrying out the long-range solution reading more is by pulsed, to count 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; For mechanical water meter or gas meter etc., there is no electric measuring instrument, pulse metering device must guarantee the external electricity of overall process in metering, easily causes metering inaccurate when 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, solved the problems such as secondary measurement that step-by-step counting brings, still, because the two all adopts switching regulator sensor to carry out electronics, read, 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 ambient light, from vision area, enter measuring instrument and irradiate digital runner in the situation that, increased 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 badly, easily damage.
In the design of structure, the one, rounding wheel is arranged on bottom or the side of digit wheel, each numeral of digit wheel is corresponding inlays or scribbles the material corresponding with sensor, several sensors to digit wheel identification are installed in housing, circuit board is arranged on the bottom of housing, and by lead-in wire, signal is exported, the character wheel box of this structure, sensor and gear drive are arranged on respectively in two cavitys, make the complex structure of water meter counter; The 2nd, because gear drive need to be crossed over two cavitys, cause spacer pad from the side leakage in fluid-tight chamber; The 3rd, such liquid-sealing water meter can only be useful in region that temperature is high or warm season, because in the season of cold winter, especially in the region below 0 ℃, such fluid partitioning freezes in water meter, tend to cause watermeter shell explosion, whole water meter is scrapped.
2,, aspect the sensor of installing in housing, be to adopt single-sensor at present mostly, when run into a unexpected faulty sensor or service time long transmission line or when part aging, reading just can not carry out, long-distance metering meter counter just cannot be worked.
In order to solve the problem of said structure aspect, application number is that the Chinese patent application of CN201210268166.2 discloses a kind of full liquid-sealing water meter counter, 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 mesh 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, when 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 long-distance metering meter counter and reading device thereof, the potential faults existing to solve prior art.
For solving the problems of the technologies described above, the utility model provides a kind of counter reading device of long-distance metering instrument, and its technical scheme is as follows:
A kind of counter reading device of long-distance metering instrument, comprise digit wheel, photoelectric sensor and the single-chip microcomputer being connected with described photoelectric sensor, described digit wheel comprises a plurality of counter wheels that are positioned at different numerical digits, described photoelectric sensor is many groups, described in every group, photoelectric sensor is corresponding with counter wheel described in each, described in each, photoelectric sensor comprises luminotron and light receiving tube, wherein, described in every group, photoelectric sensor comprises two described photoelectric sensors, anode after the luminotron series connection of two described photoelectric sensors is on the same group connected with the output terminal of one first electronic switch, its negative terminal is connected with the output terminal of one second electronic switch, the input end of described the second electronic switch is connected to receive steering order with one first output port of described single-chip microcomputer, the input end of described the first electronic switch is connected to receive steering order with one second output port of described single-chip microcomputer, the collector of two of described photoelectric sensor light receiving tubes is connected in one the 3rd output port of described single-chip microcomputer on the same group, on the same group the emitter output terminal of two of described photoelectric sensor light receiving tubes respectively with one the one A/D input port of described single-chip microcomputer, one the 2nd A/D input port connects to receive photosignal.
Preferably, wherein, described the first electronic switch is triode or controlled constant current source.
For solving the problems of the technologies described above, the utility model also provides a kind of long-distance metering instrument, comprises counter reading device, and wherein, described counter reading device is the counter reading device of long-distance metering instrument described above.
The beneficial effect of technique scheme of the present utility model is as follows:
Adopt the sensor of series connection that photosignal is received to the built-in AD converter of single-chip microcomputer, single-chip microcomputer converts simulating signal to digital signal, then process, have connection simple, sensor and single-chip microcomputer can be divided into two parts and be connected, so that these two parts can be placed in separately off-balancesheet in table (for water meter), there is cost low, the advantage such as sensing data accurately, dependable performance, operational failure rate be low.
In addition, the utility model can adopt nalog quantity type photoelectric sensor, and photoelectric sensor can be arranged on digit wheel or digital rotating disk side, and the reading region arranging on digit wheel or rotating disk is sensed district, sensed district be aberration reflective areas or or light hole, electronical reading can be the difference of rejecting after background noise, so after processing via single-chip microcomputer, can improve the accuracy of reading, automaticity is high, and method is simple, processing ease.
Accompanying drawing explanation
Fig. 1 is the counter reading device embodiment mono-of the present utility model circuit diagram of (every group of photoelectric sensor comprises the photoelectric sensor of two series connection).
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.
The complex structure existing in order to solve prior art, the problem such as is easily disturbed, and the utility model provides a kind of counter reading device of long-distance metering instrument, and it can be applied to water meter, ammeter, gas meter, gas meter, flow meter etc., is preferably applied to water meter.
Fig. 1 shows the circuit structure of counter reading device embodiment mono-of the present utility model, due to the present embodiment one can with the physical construction fit applications of multiple measuring instrument of the prior art, therefore, the physical construction of the present embodiment one repeats no more.As shown in Figure 1, counter reading device embodiment mono-of the present utility model comprises digit wheel (not shown), organizes photoelectric sensor and the single-chip microprocessor MCU being connected with many groups photoelectric sensor more.Wherein, digit wheel comprises a plurality of counter wheels that are positioned at different numerical digits, a plurality of photoelectric sensor S11, S12 ... Sn1, Sn2 are divided into many groups, according to the arrangement of Fig. 1, the row photoelectric sensor longitudinally arranging is same group of photoelectric sensor, also be the present embodiment comprise altogether the 1st group to n(for example, 2≤n or 2≤n≤7) group.Every group of photoelectric sensor S11 and S12 ... or Sn1 and Sn2 corresponding with each counter wheel, each photoelectric sensor S11, S12 ... Sn1, Sn2 comprise for emitting beam and by the digital luminotron on counter wheel corresponding to the light directive sending with for receiving from numercal light and light signal being converted to the light receiving tube of electric signal.For example, for example, due to the icon that shows luminotron (light emitting diode, more specifically, infrarede emitting diode) and light receiving tube (phototriode) that Fig. 1 has known, in order to simplify accompanying drawing, Fig. 1 no longer marks luminotron and light receiving tube.Each photoelectric sensor S11, S12 ... the luminotron of Sn1 or Sn2 and light receiving tube all couple (being directly or indirectly connected) with single-chip microprocessor MCU, thereby single-chip microprocessor MCU receives the electric signal of light receiving tube transmission and processes electric signal and identify the numeral on corresponding with it counter wheel.Every group of photoelectric sensor comprises two photoelectric sensors, for example photoelectric sensor S11, S12, the luminotron series connection of two photoelectric sensor S11, S12 on the same group.Also the 1st group of photoelectric sensor comprises photoelectric sensor S11, S12 ... n group photoelectric sensor comprises photoelectric sensor Sn1, Sn2, the luminotron series connection of photoelectric sensor S11, S12 ... the luminotron series connection of photoelectric sensor Sn1, Sn2.
What need explanation in advance is, single-chip microprocessor MCU shown in Fig. 1 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.
Particularly, as shown in Figure 1, each photoelectric sensor S11, S12 ... Sn1, Sn2 are according to rectangular arranged, and concrete connected mode is:
The photoelectric sensor S11 of the first row ... the emitter of the light receiving tube of Sn1 links together, and then by line JP-3, is connected in the A/D analog input port ADC0 of single-chip microprocessor MCU, and port ADC0 is by resistance R 1 ground connection.
The photoelectric sensor S12 of the second row ... the emitter of the light receiving tube of Sn2 links together, and then by line JP-2, is connected in the A/D analog input mouth ADC1 of single-chip microprocessor MCU, and port ADC1 is by resistance R 2 ground connection.
The photoelectric sensor S1n that n is capable ... the emitter of the light receiving tube of Snn links together, and then by line JP-2, is connected in the A/D analog input mouth ADCn of single-chip microprocessor MCU, and port ADCn is by resistance R n ground connection.
Photoelectric sensor S11, the S12 of first row, S1n are one group, their collector and S11
Light emitting diode anodic bonding together, then by line JP-5, be connected in an I/O port PB1 of single-chip microprocessor MCU.The negative electrode of the light-emitting tube of photoelectric sensor S11 is series at the anode of the light-emitting tube of photoelectric sensor S12, and the negative electrode of S12 is connected to the second electronic switch Q00, Q01 output terminal, and the control end of electronic switch is connected in an I/O port PB0 of single-chip microprocessor MCU.
Photoelectric sensor Sn1, the Sn2 of n row are one group, and the anodic bonding of the light emitting diode of their collector and Sn1 together, then is connected in an I/O port PBn of single-chip microprocessor MCU by line JP-n.The negative electrode of the light-emitting tube of photoelectric sensor Sn1 is series at the anode of the light-emitting tube of photoelectric sensor Sn2, and the negative electrode of Sn2 is connected to the second electronic switch Q00, Q01 output terminal.
The second row photoelectric sensor S12 ... the negative electrode of the light-emitting tube of Sn2 links together, be connected to one end of the second electronic switch output terminal, the other end contact resistance R81 of electronic switch, resistance R 81 is connected to the collector c of triode Q00, the emitter e of triode Q00 is connected with triode Q01 with resistance R 82, one end of the base stage b connecting resistance R80 of triode Q00, one end of resistance R 80 also connects a triode Q81, and resistance R 80 other ends meet an I/O port PB0 of single-chip microprocessor MCU.
During application, the I/O port PB1-PBn output low level of single-chip microprocessor MCU, PB0 output low level, all photoelectric sensors are not worked, while needing reading, the first output low level of PB0, the luminotron of photoelectric sensor does not work, then give in turn in order one of them output high level in port PB1-PBn, now single-chip microprocessor MCU, by reading analog port AD0-AD1, can obtain the static numerical value of the 1st group of light receiving tube of organizing to n: A11, A12, An1, An2.
Run through after quiescent value, PB0 exports high level, then gives in turn in order one of them output high level in port PB1-PBn.While being high as port PB1, the luminotron of photoelectric sensor S11 is lighted, illuminate corresponding with it counter wheel surface, the light receiving tube of light reflected light electric transducer S11 (also can be opened slotted hole not of uniform size in counter wheel side according to certain rules, luminotron sees through hole and shines light receiving tube), the emitter of light receiving tube produces and the proportional voltage of receiving light power degree, and single-chip microprocessor MCU is by difference read port AD0-AD1, can obtain corresponding numerical value: B11, B12.
The value of first group two corresponding wheel colors of photoelectric sensor S11, S12 or light hole size is so:
C11=B11-A11；
C12=B12-A12；
The corresponding wheel color of two photoelectric sensor Sn1, Sn2 of n group or the value of light hole size are:
Cn1=Bn1-An1；
Cn2=Bn2-An2；
Through single-chip microprocessor MCU, carry out numerical value processing, if reflective white or see through macropore or the numerical value Cnx of convex surface reflection gained to adjust be 6, reflection numerical value Cnx light grey or that see through mesopore or half convex surface reflection gained is totally decided to be 4, reflection Dark grey or see through aperture or the numerical value Cnx of plane reflection gained to adjust be 2, reflection black or see through atresia or the numerical value Cnx of concave reflection gained to adjust be 0, can draw a kind of coding of counter wheel numeral 0-9.
As the position coating black of the digital 9-0 at wheel or light tight hole, at 3-4-7, be coated with light grey or middle light hole, at 1-2-8, be coated with Dark grey or little light hole, at 5-6 coating white or full impregnated unthreaded hole, what MCU obtained after processing is encoded to:
That is to say and adopt such circuit and the structure of wheel, by drawing hundreds of kind after the processing of single-chip microprocessor MCU numerical value, encode, be enough to identify any position that whole counter wheel is positioned, thereby reach the numeral (0-9) that precisely reads wheel, solve the transition problem of wheel.
Preferably, RT is temperature sensor, and temperature that can detecting sensor environment, so that single-chip microcomputer is done the reference of data processing.The elements such as triode Q00, Q01 and resistance R 81, R80, R82 are made switching mode constant current source, increase the accuracy of reading.Because the utility model embodiment bis-is only with the difference of the utility model embodiment mono-of Fig. 1, the quantity of every group of photoelectric sensor (also i.e. figure in every row photoelectric sensor) is different, and circuit structure is clear, below repeat no more the connected mode of each embodiment, only stress the course of work of each embodiment.
Above-mentioned arbitrary counter reading device embodiment all can be applied to polytype long-distance metering instrument, realizes the remote meter reading of this measuring instrument.
To sum up, the utility model can the line by seldom be connected single-chip microcomputer and sensor group, single-chip microcomputer and sensor group can be placed separately like this, sensor group is worked in water meter, single-chip microcomputer can be worked under anhydrous environment outside water meter, even if sensor group is leaked, single-chip microcomputer can detect, and the size of leaking according to it, whether determination data is reliable, making electronical reading is the difference of rejecting after background noise, detecting light disturbs or leaks and filtering part light and the interference of leaking, improved the accuracy of reading, automaticity is high, method is simple, processing ease.Adopting sensor in parallel that photosignal is delivered to single-chip microcomputer processes, even if one of them is malfunctioning for one group of sensor, still can guarantee the stability of reading and output, and it is low to have cost, the advantage such as sensing data accurately, dependable performance, operational failure rate be low.
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. the counter reading device of a long-distance metering instrument, comprise digit wheel, photoelectric sensor and the single-chip microcomputer being connected with described photoelectric sensor, described digit wheel comprises a plurality of counter wheels that are positioned at different numerical digits, described photoelectric sensor is many groups, described in every group, photoelectric sensor is corresponding with counter wheel described in each, described in each, photoelectric sensor comprises luminotron and light receiving tube, it is characterized in that, described in every group, photoelectric sensor comprises two described photoelectric sensors, anode after the luminotron series connection of two described photoelectric sensors is on the same group connected with the output terminal of one first electronic switch, its negative terminal is connected with the output terminal of one second electronic switch, the input end of described the second electronic switch is connected to receive steering order with one first output port of described single-chip microcomputer, the input end of described the first electronic switch is connected to receive steering order with one second output port of described single-chip microcomputer, the collector of two of described photoelectric sensor light receiving tubes is connected in one the 3rd output port of described single-chip microcomputer on the same group, on the same group the emitter output terminal of two of described photoelectric sensor light receiving tubes respectively with one the one A/D input port of described single-chip microcomputer, one the 2nd A/D input port connects to receive photosignal.
2. the counter reading device of long-distance metering instrument according to claim 1, is characterized in that, described the first electronic switch is triode.
3. a long-distance metering instrument, comprises counter reading device, it is characterized in that, described counter reading device is the counter reading device of the arbitrary described long-distance metering instrument of claim 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320688644.5U CN203587128U (en) | 2013-11-04 | 2013-11-04 | Remote metering device and counter reading device thereof |
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| CN201320688644.5U CN203587128U (en) | 2013-11-04 | 2013-11-04 | Remote metering device and counter reading device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316754A (en) * | 2014-11-06 | 2015-01-28 | 重庆大学 | Thunder and lightning counter remote monitoring early warning system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316754A (en) * | 2014-11-06 | 2015-01-28 | 重庆大学 | Thunder and lightning counter remote monitoring early warning system and method |
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