CN1198119C - Long-distance collection and transmission method and apparatus for counting of wheel-type counter - Google Patents
Long-distance collection and transmission method and apparatus for counting of wheel-type counter Download PDFInfo
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- CN1198119C CN1198119C CN 03113051 CN03113051A CN1198119C CN 1198119 C CN1198119 C CN 1198119C CN 03113051 CN03113051 CN 03113051 CN 03113051 A CN03113051 A CN 03113051A CN 1198119 C CN1198119 C CN 1198119C
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Abstract
The present invention relates to a remote collection and transmission method and a device counted by a wheel type counter. Graphic codes for distinguishing different numbers are arranged on a counting wheel of a wheel type counter, and an image sensor for reading numbers is arranged on the counting wheel, and is used for treatment and record identification through a circuit of a monolithic computer. The numbers are transmitted to a computer of a data collecting unit or an accounting center. Bar-shaped or grid-shaped graphic codes are used for representing ten distinguishable patterns instead often decimal arabic numbers (from 0 to 9) on the counting wheel of the wheel type counter. The present invention uses the image sensor and a signal treating device to simulate human vision. After the images indicated by the counter are converted into numbers, the numbers are transmitted to a remote accounting center through a field bus. The present invention can be used for solving the problem of remote data collection and transmission, especially data remote transmission of metering instruments, such as water meters, gas meters and the like on the basis of the metering instruments of the mechanical wheel type counter. According to a data collection and a remote transmission techniques developed according to the method and the device, the structures of the original metering instruments do not need to be changed. The method and the device have the advantages of accuracy, stabilization, reliability, etc.
Description
One, technical field
The remote collection that the present invention relates to count, the method for transmission and device.Especially the remote collection of wheel type counter counting, the method and the device of transmission.
Two, background technology
Along with the fast development of building intelligent, press for the method that adopts remote data acquisition and transmission and replace manually the register one's residence problem of charge of tap water and coal gas.There has been multiple scheme to be suggested.
The remote data acquisition of existing water meter or gas meter and transmission technology mainly contain two classes.
The first adopts the step-by-step counting principle, promptly on the rotation wing wheel of water meter or gas meter or axle sensitive element is installed, and on corresponding with it shell inductor is installed.When rotation wing wheel or axle rotate, on inductor, produce pulse, carry out step-by-step counting by single-chip microcomputer then, carry out teletransmission after converting data on flows to.Usually the inductor that adopts has Hall element and tongue tube etc.The major defect of this method is to be easy to generate mistake pulse or pulse-losing, and after system's dead electricity obliterated data.Otherwise need complicated data holding circuit, although adopted dual inductor and low power dissipation electron element, but still fail thoroughly to address these problems, typical in patent or patented claims such as Chinese patent CN89205961 and CN00219975, passive data transmission water meters.
It two is employing state method of readings, and number or the different sensing element of size are installed, near sensor installation counter wheel (as the electrode of electric capacity) in the different digital position that is about to the counter wheel of wheel type counter.When counter wheel forwarded different positions to, the signal intensity difference that sensor obtains was measured the signal intensity of each sensor by metering circuit and single-chip microcomputer, carried out teletransmission after converting corresponding numeral to.The defective of this method is the influence (as the impurity in the fluid) that signal is subjected to dielectric property easily, and needs to change the structure of former measuring instrument, implements very difficult, yet there are no the example of engineering construction.Be typically the wheel type counter of ABB Research Ltd., Chinese patent application CN01112371.
Three, summary of the invention
The present invention seeks to propose a kind of remote data acquisition and transmission method of wheel type counter and realize this data collector and and corresponding supporting teletransmission technology.The object of the invention is to adopt imageing sensor and computer image recognition technology to read the counting of wheel type counter, and controls and data transmission by fieldbus.
The object of the invention also is: provide a kind of and adopt intermittently that the mode of reading reads mechanical wheel type counter, be applicable to the occasion of regular metering, as the tariff meter of the water of resident or enterprises and institutions, electricity, coal gas.
The present invention seeks to realize like this: the remote collection and the transmission method of wheel type counter counting, it is the graphic code that on the counter wheel of wheel type counter, is provided with the difference different digital, can be provided with optical lens and imageing sensor in addition, by the counter wheel of optical lens read-out counter window, and by imageing sensor and single chip computer device record and discern; Be transferred to DCC or long-range charging center computing machine by fieldbus.The remote collection device of wheel type counter counting is also as mentioned above: be provided with the graphic code of difference different digital on the counter wheel of wheel type counter, be provided with the imageing sensor of reading on counter wheel, imageing sensor is handled and record identification through single chip circuit; Be transferred to data acquisition unit or charging center computing machine.Imageing sensor comprises look sensitive semiconductor array, and counter wheel window place is provided with light source.Between imageing sensor and counter wheel, be provided with optical lens or optical fiber and be used to conduct the counter wheel image.
Definition to optical lens and imageing sensor: optical lens includes but not limited to common photoconduction lens, and convergent lens, imageing sensor include but not limited to CCD or MOS face formation light sensor.Especially select or light sensor is made linear array.
The present invention generally can adopt the one dimension graphic code can discern the numeral of ten differences, adopts the X-Y scheme font code can improve the accurate discrimination of image certainly, adopts existing one-dimensional bar code also can realize purpose of the present invention fully certainly.
The present invention is general to be represented with the graphic code of simple shape with ten decimal system arabic numeral of 0-9 commonly used, represents as multiple bar code shape and diacritic ten patterns, provides as Fig. 2, Fig. 3.
The present invention is based on artificial vision's principle.Employing optical sensor, Single Chip Microcomputer (SCM) system and auxiliary circuit anthropomorphic dummy's thereof eyes read the process of wheel type counter.
Characteristics of the present invention are: adopt imageing sensor (or photosensitive semiconductor device) and signal processor to come anthropomorphic dummy's vision, be transferred to long-range charging center by fieldbus after the image transitions one-tenth numeral with the counter indication.This invention can be used for solving remote data acquisition and the transmission based on the measuring instrument of mechanical wheel type counter, as the data remote of measuring instruments such as water meter, gas meter.The structure that data acquisition of developing according to this invention and teletransmission technology need not change former measuring instrument has advantages such as accurate, stable, reliable.
The present invention is dynamo-electric separate type, and need not provide to the machine work counting position of showing tool by power supply fully, and is therefore, especially suitable to gas meter, flow meter.
Counter wheel is marked with arabic numeral or other numeric character, especially adopts methods such as etching to mark.
Adopt this invention needn't change the physical construction of former measuring instrument, only need the reading device that one cover is made according to this invention to be installed at original meter reading window.There is not the problem of leaking meter or mistake meter in the measuring instrument of making according to this invention, and measuring accuracy only depends on the precision of original instrument.Because current continuous data is retained on the counter wheel all the time, the data during the dead electricity of system or the maintenance can not lost.Can take moment to power up the work image data, can not timing and timing acquiring, user data is monitored.
Four, description of drawings
Fig. 1 is the structural representation of band lens identification counter wheel of the present invention
Fig. 2 is a counter wheel structural representation of the present invention
Fig. 3 is a counter wheel window structure synoptic diagram of the present invention
Fig. 4 is a kind of coding structure synoptic diagram of the 0-9 of counter wheel of the present invention
Fig. 5 is the another kind of coding structure synoptic diagram of the 0-9 of counter wheel of the present invention
Fig. 6 is the structural representation of Direct Recognition counter wheel of the present invention
Fig. 7 transmits the structural representation of counter wheel figure sign indicating number for optical fiber of the present invention
Fig. 8 transmits the structural representation of counter wheel figure sign indicating number for lens of the present invention
Fig. 9 is a pattern recognition circuit block diagram of the present invention
Figure 10 takes out the synoptic diagram that the pairing pixel of each numerical aperture is calculated for the relative position of the present invention according to count window and imageing sensor;
Among the figure, counter wheel 1, table tool panel 2, illuminating lamp 3, imageing sensor 5, optical lens 4, optical fiber 4-1, Single Chip Microcomputer (SCM) system comprise pattern recognition and control circuit board 6, external power source 7, charging center computing machine 8.
The invention will be further described below in conjunction with accompanying drawing:
The numeral of the main acquisition tables tool of imageing sensor 5 (CCD or MOS face formation) above numerical digit in position, the figure place behind the radix point is not discerned.Individual position and above numeral are determined, rather than action at any time, and precision is enough.
Imageing sensor 5 (CCD or MOS face formation) to the acquisition geometry of data is: CCD or MOS face formation array are discerned with software each digital units: by 6 combinations of writing down the signal of looks quick diode array such as single-chip microcomputers, thereby identify the numeral of graph of a correspondence sign indicating number representative, the digital signal that obtains exports the receiving end of signal to.
One of typical embodiment as shown in Figure 1.The illuminating lamp of being made by the electroluminescence semiconductor material 3 illuminates the count window 2 of the wheel type counter 1 that scribbles graphic code (two dimension), image in the window enters imageing sensor 5 (CCD or MOS face formation) by optical lens 4, is transferred to long-range charging center computing machine 8 by Single Chip Microcomputer (SCM) system 5 records and after discerning by fieldbus then.The electric power of device is supplied with by external power source 7.One of key of implementing this programme is the decimal system arabic numeral on the counter wheel of common wheel type counter need be represented with the graphic code of simple shape, as shown in Figure 2.Fig. 3 has provided and has seen through the set of diagrams font code that window shows.Fig. 4 has provided one group of typical coded system (totally 10 numerals).
Typically two of embodiment as shown in Figure 6.The illuminating lamp of being made by the electroluminescence semiconductor material 3 illuminates the count window 2 of the panel of the wheel type counter 1 that scribbles bar code (one dimension), image in the window is by closing-type sensor 5 (CCD or MOS linear array type or face formation), being transferred to long-range charging center computing machine 8,8 by fieldbus after writing down and discern by Single Chip Microcomputer (SCM) system 6 then can also be the data collector terminal of unit building or floor.The electric power of device is supplied with by external power source 7.One of key of implementing this programme is the decimal system arabic numeral on the counter wheel of common wheel type counter need be represented with the bar code of simple shape.Fig. 5 has provided one group of typical coded system, also can adopt present commercial bar code combination commonly used.
Typically three of embodiment as shown in Figure 7.The illuminating lamp of being made by the electroluminescence semiconductor material 3 illuminates the count window 2 of the wheel type counter 1 that scribbles graphic code (two dimension) or bar code (one dimension), figure in the window or bar code import look quick (or photosensitive) diode array 5 by optical fiber 4, signal combination by single-chip microcomputer 6 record look quick (or photosensitive) diode array circuit, thereby identify the numeral of graph of a correspondence sign indicating number representative, be transferred to long-range charging center computing machine 8 by fieldbus then.The electric power of device is supplied with by external power source 7.One of key of implementing this programme is the decimal system arabic numeral on the counter wheel of common wheel type counter need be represented with the graphic code of two kinds of colors (as black and white) of simple shape at least.Similar to scheme one, as can to adopt Fig. 4 or Fig. 5 to provide coded system.
Typically four of embodiment as shown in Figure 8.The illuminating lamp of being made by the electroluminescence semiconductor material 3 illuminates the count window 2 of the wheel type counter 1 that scribbles graphic code (two dimension), several numeral combinations in the window enter look quick diode array 5 by optical lens 4, the combination of the signal by single-chip microcomputer 6 record looks quick diode array, thereby identify the numeral of graph of a correspondence sign indicating number representative, be transferred to long-range charging center computing machine 8 by fieldbus then.The electric power of device is supplied with by external power source 7.One of key of implementing this programme is the decimal system arabic numeral on the counter wheel of common wheel type counter need be represented with the graphic code of two kinds of colors (as black and white) of simple shape at least.Similar to scheme one, as can to adopt Fig. 4 and Fig. 5 to provide coded system.
On digit wheel, adopt graphic code or bar code etc. not to influence the physical construction of counter, in the counter manufacture process, very easily realize.Also can adopt non-decimal counter wheels such as the quaternary, scale-of-eight as required.Need only on the circumference of digit wheel and adopt four or eight figures.
It is feasible demarcating 0-9 numeral on counter wheel separately, but the paler colour of figure notation, is unlikely to influence the digital reading of figure sign indicating number.
The present invention is that the simplification of bar code digit recognition is used, one-dimensional bar code also can be realized the present invention fully, can indiscriminately imitate the bar code digital recognition system totally, the wheel type counter whole circumference is divided into ten positions (or making non-decimal counter wheels such as the quaternary, scale-of-eight), and totally ten numerals of 0-9 all provides with bar code.Bar code commonly used has 39 yards etc.Certainly do not exceed scope of the present invention with two-dimensional bars such as trellis yet.Just to adopt corresponding decoding scheme.
In Fig. 9 pattern recognition circuit block diagram of the present invention, as long as adopt simple one-chip computer circuit (as PIC1687F series) control chart image-position sensor (as TCD127) and driving circuit thereof.Certainly, can adopt bar code and corresponding decoding scheme fully.
Counter wheel is carried out the flow process and the algorithm of optical identification and sees Figure 10:
1. by image pixel (one dimension or two dimension) by one-chip computer (as PIC1687F series) control chart image-position sensor (as TCD127) and driving circuit and optical system acquisition count window;
2. according to the relative position of count window and imageing sensor, take out the pairing pixel of each numerical aperture;
3. pixel data is carried out binary conversion treatment, obtain pixel sequence (consider factors such as lip-deep pollution, the pixel sequence that obtains may contain noise, and what provide among the figure is comparison noise serious situation) as the row of first among the figure;
4. carry out individual element with the pixel data that obtains with the pairing desirable pixel of 0-9 of bar shaped (or figure) sign indicating number of encoding in advance and subtract each other, and obtain the quadratic sum S of each difference, see Fig. 9 and following table;
| |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| S | 15 | 9 | 19 | 11 | 19 | 15 | 17 | 17 | 7 | 26 |
5.S the pairing numeral of minimum value be exactly the data that imageing sensor is read from count window, from table, can judge in this example, the minimum value of S is 7, so corresponding sense data should be 8;
6. all windows are all carried out same processing, obtain the data of each window;
7. start communication controller (as MAX485), data are sent to bus.Therefore control one-chip computer control light source and data acquisition circuit, are easy to realize the collection of data just and transmit instantaneous power supply.
Illustrate: both can effectively suppress noise by the method that improves unit width number of pixels (resolution), what provide in this example is every group of 32 pixels, can bring up to 64 even higher number of pixels in actual the use.In addition, the X-Y scheme font code that more can adopt this invention to propose.Generally speaking, every millimeter 16 pixel can satisfy nearly all situation.
Profibus fieldbus etc. is adopted in the enforcement of bus transfer, and wireless transmission can adopt GPRS mode etc.
The circuit that single-chip microcomputer is handled Figure recognition is a prior art, and can be special chip, comprising distortion correction, impulse compensation, analog to digital conversion; May also comprise circuit such as chromaticity correction in addition.Arrive data acquisition unit or charging center computing machine by bus transfer after the analog to digital conversion.
Claims (8)
1, the remote collection and the transmission method of wheel type counter counting, it is characterized in that on the counter wheel of wheel type counter, being provided with the graphic code of difference different digital, be provided with the imageing sensor of reading on counter wheel, imageing sensor is handled and record identification through single chip circuit; Be transferred to data acquisition unit or charging center computing machine.
2,, it is characterized in that representing diacritic ten patterns with ten decimal system arabic numeral of 0-9 with the graphic code of strip or trellis shape on the counter wheel of wheel type counter according to the remote collection and the transmission method of the described wheel type counter counting of claim 1.
3,, it is characterized in that single chip circuit handles the back data by wireless or by bus wire transmission according to the remote collection and the transmission method of the described wheel type counter counting of claim 1.
4, remote collection and the transmission method of counting according to the described wheel type counter of claim 1 is characterized in that the instantaneous power supply in data acquisition and transmission.
5, remote collection and the transmission method of counting according to the described wheel type counter of claim 1 is characterized in that being provided with optical lens between imageing sensor and counter wheel or optical fiber is used to conduct the counter wheel image.
6, the remote collection device of wheel type counter counting is characterized in that comprising the graphic code wheel type counter, imageing sensor or the look sensitive semiconductor array that are provided with the difference different digital, and counter wheel window place is provided with light source.
7, device according to claim 6 is characterized in that being provided with optical lens or optical fiber between imageing sensor and counter wheel.
8, device according to claim 6 is characterized in that counter wheel is marked with the wheel type counter of arabic numeral or other numeric character.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113051 CN1198119C (en) | 2003-03-26 | 2003-03-26 | Long-distance collection and transmission method and apparatus for counting of wheel-type counter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03113051 CN1198119C (en) | 2003-03-26 | 2003-03-26 | Long-distance collection and transmission method and apparatus for counting of wheel-type counter |
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| CN1438474A CN1438474A (en) | 2003-08-27 |
| CN1198119C true CN1198119C (en) | 2005-04-20 |
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| CN 03113051 Expired - Fee Related CN1198119C (en) | 2003-03-26 | 2003-03-26 | Long-distance collection and transmission method and apparatus for counting of wheel-type counter |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147279B (en) * | 2011-01-13 | 2013-02-13 | 南京邦耀科技发展有限公司 | Character-wheel-type meter reading method and character-wheel-type direct-reading meter |
| CN104506825A (en) * | 2015-01-09 | 2015-04-08 | 樊智勇 | Electronic reading device for mechanical gauge and reading method thereof |
| CN105867259A (en) * | 2016-05-27 | 2016-08-17 | 广州正峰电子科技有限公司 | Intelligent instrument and charging monitoring system |
| CN106441519B (en) * | 2016-09-20 | 2019-04-02 | 杭州电子科技大学 | A kind of detection method of turn-taking for gas meter, flow meter machinery dial plate |
| US11733082B2 (en) * | 2017-07-28 | 2023-08-22 | Amosense Co., Ltd | Electronic meter |
| CN109979174A (en) * | 2019-03-29 | 2019-07-05 | 成都千嘉科技有限公司 | A kind of mechanical two dimensional code water meter that can change data in real time |
| CN110716458A (en) * | 2019-09-06 | 2020-01-21 | 南京工程学院 | Gas data acquisition device based on color recognition and use method thereof |
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