CN102147279B - Character-wheel-type meter reading method and character-wheel-type direct-reading meter - Google Patents
Character-wheel-type meter reading method and character-wheel-type direct-reading meter Download PDFInfo
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- CN102147279B CN102147279B CN 201110006261 CN201110006261A CN102147279B CN 102147279 B CN102147279 B CN 102147279B CN 201110006261 CN201110006261 CN 201110006261 CN 201110006261 A CN201110006261 A CN 201110006261A CN 102147279 B CN102147279 B CN 102147279B
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Abstract
The invention discloses a character-wheel-type meter reading method and a character-wheel-type direct-reading meter. With respect to a photoelectric direct-reading type meter, at an optical pulse emitting end, a coded optical pulse is transmitted in optical fibers; the coded optical pulse irradiates to a specific position on a character wheel, wherein the specific position is provided with a light reflection or transmission area corresponding to characters on the character wheel; at an optical pulse receiving end, the coded optical pulse from the light reflection or transmission area is received by optical fibers and decoded by a decoding module so as to finally obtain the corresponding characters of the character wheel; the optical fibers at the optical pulse emitting end and the optical fibers at the optical pulse receiving end are arranged in pairs and are opposite in positions; and in accordance with the system of the character wheel, a corresponding number of pairs of the optical fibers at the optical pulse emitting/receiving ends are arranged so as to meet a condition that the emitted coded optical pulse and the received coded optical pulse in each pair of optical fibers are consistent. By means of the invention, the problems of susceptibility to optical pollution, large optical interference between adjacent meters, large electromagnetic interference, poor safety, low reliability, high reading error rate and the like of the traditional direct-reading type meter are solved.
Description
Technical field
The present invention relates to a kind of print wheel meter sense method and character wheel-type direct-reading gauge outfit that adopts fiber optic conduction, belong to the survey control technology field.
Background technology
Adopt stem-winder at the most of regional civil gas managements of China at present, the gas company person of checking meter is checked meter per month from house to house to the doorstep, and the user is according to gas consumption is paid.In whole flow process, some drawback is arranged:
1, checks meter.Increasing cell management is strengthened, and customer requirements improves, and registering one's residence checks meter produces contradictory phenomena linearly increases.Do not disturb residents in order to check meter to the doorstep, in recent years, many residential quarters have moved on to ammeter, tap water meter in the corridor in the room.But gas meter, flow meter can't solve because of safety problem, still need the person of checking meter entering check meter.For reducing " disturbing residents " number of times, meet phenomenon less than the people to the doorstep, gas company reality row checks meter every other month, estimate the system such as copy, and the result is quite a few because estimating the service dispute of copying initiation.In addition, the social idler case of pretending to be gas meter reading person to swindle to the doorstep also happens occasionally.
2, charge.Gas company is sold gas after purchasing first gas, and the financial pressure that causes is very large, if adopt IC-card prepaid equipment, the transmission ﹠ distribution that then can't calculate per month are poor, does not have a lot of expenses to be difficult to receive not come up simultaneously.Propose a kind of prepaid Wireless remote control equipment in this, can accomplish prepaid, can avoid again checking meter to the doorstep, by radio meter register the operating position in user this month is grasped in real time, be convenient to the management of gas company.
3, management.The level of informatization is too low, and management team is huge, does not pay dues for a long time or shows for some and go bad incalculable table, and gas company can't be controlled unique user.
Since in August, 2009, Premier Wen Jiabao proposed " perception China ", Internet of Things was formally classified as one of country's five large emerging strategic industries, writes " government work report ".The remote fuel gas meter reading system that adopts advanced technology of Internet of things to make up meets the emerging strategic industry requirement that country greatly develops.This system is comprised of home intelligent wireless data sending gas meter, flow meter, wireless data sending handheld reading meter device, wireless data sending concentrator, wireless data sending repeater, wireless data sending acquisition module, Multifunctional hand-held data capture management device, relevant data terminal, GPRS digital transmission module, background data center etc.
1, solves the problem of checking meter.
Home intelligent wireless data sending gas meter, flow meter in this system, can the accurate recording user use the gas situation, the data that the relevant devices such as wireless data sending handheld reading meter device, wireless data sending concentrator, wireless data sending repeater, wireless data sending acquisition module, Multifunctional hand-held data capture management device send in the system when receiving control command, and this operation need not the meter reading personnel and registers one's residence, and avoids the contradiction of registering one's residence and producing.
2, solve financial pressure, accomplish to charge in advance, do not affect again the poor accounting of transmission ﹠ distribution simultaneously.
3, can carry out the setting of checking meter, closing valve and parameter to the user separately.
But what the mechanical reading of gas meter, flow meter was converted into the most employings of electron number is that step-by-step counting, photo-electronic directly reading or picture add wired or wireless transmission.
The first step-by-step counting mode is very high to the quality requirements of the size of magnet steel, installation site, tongue tube, and can not accomplish that the electron number and the machinery that obtain count up to entirely consequently, always have a difference (truth of a matter).
The second photo-electronic directly reading mode.At present employing all is light emitting diode and the combination of light receiver pope, it is larger that this mode is affected by light pollution, and daylight disturbs, and the phase mutual interference during read data causes error code easily, so photoelectric direct reading counter appeared on the market existing several years, but always because accuracy is low, poor reliability is not promoted.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, improve the reliability of product, a kind of new print wheel meter sense method and character wheel-type direct-reading gauge outfit are proposed, concrete technical scheme is as follows:
A kind of print wheel meter sense method, to the gauge outfit of photo-electronic directly reading mode:
At the light pulse transmitting terminal, the coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the reflective or transmission region corresponding with character on the character wheel;
At the light pulse receiving end, by the coded light pulses of optical fiber reception from reflective or transmission region, and be transferred to the light pulse receiver, coded light pulses converted to the coded electronic pulse of equivalence by the light pulse receiver, by the decoder module decoding, finally obtain the respective symbols of character wheel again;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end arranges in pairs, and the position is corresponding;
The system of corresponding character wheel is provided with the optical fiber logarithm of corresponding light pulse transmitting/receiving end, satisfies in every pair of optical fiber, and the coded light pulses of emission is consistent with the coded light pulses of reception.
" 0/1 " of " bright/dark " the corresponding binary code in every pair of optical fiber of light pulse transmitting/receiving end; For example, the scale-of-two character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 1 pair; The scale-of-eight character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 3 pairs; Decimal system character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 4 pairs; The sexadecimal character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 4 pairs.
A kind of character wheel-type direct-reading gauge outfit of using said method comprises character wheel, at the light pulse transmitting terminal with at the light pulse receiving end,
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the retroreflective regions corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from retroreflective regions, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the homonymy of character wheel.
On the card of described character wheel, count five equilibrium according to the system of character wheel, post reflecting mark plaster in the position accordingly with character, consist of retroreflective regions; The right relevant position of reflective spot on the reflecting mark plaster and the optical fiber of transmitting/receiving end is corresponding.
A kind of character wheel-type direct-reading gauge outfit of using said method comprises character wheel, at the light pulse transmitting terminal with at the light pulse receiving end,
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the transmission region corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from transmission region, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the heteropleural of character wheel.
On the card of described character wheel, count five equilibrium according to the system of character wheel, be provided with light tank in the position accordingly with character, consist of transmission region; The right relevant position of the diaphanous spot of light tank and the optical fiber of transmitting/receiving end is corresponding.
The principle of the technical program is that optical fiber uses light pulse along the optical link transmission information, uses electric pulse along cable transmission information to substitute.
End in system, using light emitting diode to do transmitter generation light pulse is the starting point that information arrives fibre circuit, adopts simultaneously lens, and light pulse is focused on fiber medium, and light pulse is transmitted in fiber medium along circuit.
The coded electronic pulse information that transmitter receives comes from copper cabling, then with information processing and convert to the equivalence coded light pulses.By the inner full-reflection principle, light pulse is easy to move along fibre circuit, and the inside of optical fibre total reflection principle has illustrated that light just can not overflow when incident angle surpasses critical value from optical fiber; On the contrary, light can be reflected back in the optical fiber.
Direct-reading gauge head adopts photovoltaic, light emitting diode and light receiver pope have certain distance, the combination of light emitting diode and light receiver pope is subject to the impact of external light source easily, direct-reading gauge head small volume particularly, light emitting diode and light receiver pope are arranged closely, and lumination of light emitting diode when reading is because the light scattering of light emitting diode is large, light source influences each other, the phase mutual interference, and the light receiver pope can not receive correct light signal and cause and misread.After using fiber optic conduction, the light source of light emitting diode can be placed in from the light receiver pope relatively away from, relatively loose place, by optical fiber light is conducted to light receiver pope place, because the fiber optic conduction transmitance is high, conduction loss is low, without scattering, there is not light to disturb at light receiver pope place, can accurate reading.
Direct-reading gauge head uses powered battery, must adopt low power dissipation design for reaching requirement low in energy consumption, and electric current was little of microampere order even the peace level of receiving when information was transmitted in cable.So very easily be subject to Electromagnetic Interference and cause error code.Can thoroughly solve the Electromagnetic Interference problem after using fiber optic conduction, because the optical fiber strong security, volume is little, and is lightweight, soft, flexible, flexible characteristics, the fibre bundle that very easily is made into various type shapes had not only had mutually crosstalking but also can be fit to various application circumstances between signal.
The conduction reliability is high because optical fiber has, the conduction wave band is broad, so that adopt the direct-reading gauge head of fiber optic conduction can select according to concrete application scenario and particular surroundings the light source of different spectral ranges, improves the reliability of system.
Use fiber optic conduction information, because it is form transmission with light that signal of communication transmits in optical fiber, so can not produce the phenomenons such as spark or static because of short circuit or loose contact as traditional electric wire, these characteristics so that the direct-reading gauge head that adopts fiber optic conduction at family expenses gas meter, flow meter, industrial fuel gas table, gas meter, oil depot, ammunition depot, the flammable explosive gas warehouse, there is the occasion particularly suitable of high volatilization and inflammable gas in chemical plant etc.Can guarantee to use safety and device security.
The present invention is directed to traditional direct-reading gauge head and have the light pollution of being subject to, light disturbs large each other, be subjected to Electromagnetic Interference large, poor stability, reliability is low, the problems such as reading bit error rate height, a kind of direct-reading gauge head implementation method that adopts fiber optic conduction is proposed, it is high that optical fiber has the conduction reliability, the conduction wave band is broad, the conduction transmitance is high, conduction loss is low, be not subjected to Electromagnetic Interference (not being afraid of thunderbolt), strong security, volume is little lightweight, soft, flexibly, the advantage such as flexible, pass through the method, can effectively stop exterior light pollutes, light disturbs each other, Electromagnetic Interference, thoroughly solve the problems such as reading bit error rate height, the security that improves direct-reading gauge head, reliability, accuracy.
The present invention proposes a kind of anti-interferencely, reduce light pollution, improve the measuring method of reliability, the accuracy of effective guarantee data.
Description of drawings
Fig. 1-the 1st, the read method synoptic diagram in the example 1;
Fig. 1-2 is the character wheel side schematic view of Fig. 1-1;
Among the figure, take decimal system character wheel as example, be provided with altogether 4 pairs of optical fiber and get final product, these 4 pairs of optical fiber are to identify 11,12,13 and 14 among the figure; 15 is character wheel, and 16 for pasting the zone of reflecting mark plaster.
Fig. 2-the 1st, the read method synoptic diagram in the example 2;
Fig. 2-the 2nd, the character wheel side schematic view of Fig. 2-1;
Among the figure, take decimal system character wheel as example, be provided with altogether 4 pairs of optical fiber and get final product, these 4 pairs of optical fiber are to identify 21,22,23 and 24 among the figure; 25 is character wheel, and 26 is the zone at light tank place.
Embodiment
A kind of print wheel meter sense method, to the gauge outfit of photo-electronic directly reading mode:
At the light pulse transmitting terminal, the coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the reflective or transmission region corresponding with character on the character wheel;
At the light pulse receiving end, by the coded light pulses of optical fiber reception from reflective or transmission region, and be transferred to the light pulse receiver, coded light pulses converted to the coded electronic pulse of equivalence by the light pulse receiver, by the decoder module decoding, finally obtain the respective symbols of character wheel again;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end arranges in pairs, and the position is corresponding;
The system of corresponding character wheel is provided with the optical fiber logarithm of corresponding light pulse transmitting/receiving end, satisfies in every pair of optical fiber, and the coded light pulses of emission is consistent with the coded light pulses of reception.
" 0/1 " of " bright/dark " the corresponding binary code in every pair of optical fiber of light pulse transmitting/receiving end; For example, the scale-of-two character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 1 pair; The scale-of-eight character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 3 pairs; Decimal system character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 4 pairs; The sexadecimal character wheel, the optical fiber logarithm of light pulse transmitting/receiving end is 4 pairs.
For coded light pulses, can adopt existing coded system, for example certain clock is interval, and light is bright or dark, and corresponding decoding end is identified corresponding coded signal, distinguishes the address (numbering) of every pair of optical fiber of light pulse transmitting/receiving end.
Example 1 is with reference to figure 1-1 and Fig. 1-2;
A kind of character wheel-type direct-reading gauge outfit of using said method comprises character wheel, at the light pulse transmitting terminal with at the light pulse receiving end, it is characterized in that
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the retroreflective regions corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from retroreflective regions, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the homonymy of character wheel.
On the card of described character wheel, count five equilibrium according to the system of character wheel, post reflecting mark plaster in the position accordingly with character, consist of retroreflective regions; The right relevant position of reflective spot on the reflecting mark plaster and the optical fiber of transmitting/receiving end is corresponding.
Example 2 is with reference to figure 2-1 and Fig. 2-2;
A kind of character wheel-type direct-reading gauge outfit of using said method comprises character wheel, at the light pulse transmitting terminal with at the light pulse receiving end, it is characterized in that
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the transmission region corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from transmission region, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the heteropleural of character wheel.
On the card of described character wheel, count five equilibrium according to the system of character wheel, be provided with light tank in the position accordingly with character, consist of transmission region; The right relevant position of the diaphanous spot of light tank and the optical fiber of transmitting/receiving end is corresponding.
Specifically,
The metering system of example 1 is:
The reading Time Controller sends light signal, on the reflecting mark plaster of fiber optic conduction to the character wheel, the light signal of reflecting mark plaster reflection is transferred to controller by another root optical fiber with the coded message on the reflecting mark plaster again, controller, generates reading and carries out corresponding control operation decoding of information through certain algorithm.
The metering system of example 2 is:
The reading Time Controller sends light signal, by the side of fiber optic conduction to character wheel, notch on the light transmission character wheel or coding groove project on the optical fiber or light receiving tube of character wheel opposite side, the optical fiber of opposite side or light receiving tube with communication to controller, controller, generates reading and carries out corresponding control operation decoding of information through certain algorithm.
Claims (5)
1. a print wheel meter sense method is characterized in that the gauge outfit to the photo-electronic directly reading mode,
At the light pulse transmitting terminal, the coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the reflective or transmission region corresponding with character on the character wheel;
At the light pulse receiving end, by the coded light pulses of optical fiber reception from reflective or transmission region, and be transferred to the light pulse receiver, coded light pulses converted to the coded electronic pulse of equivalence by the light pulse receiver, by the decoder module decoding, finally obtain the respective symbols of character wheel again;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end arranges in pairs, and the position is corresponding;
The system of corresponding character wheel is provided with the optical fiber logarithm of corresponding light pulse transmitting/receiving end, satisfies in every pair of optical fiber, and the coded light pulses of emission is consistent with the coded light pulses of reception;
" 0/1 " of " bright/dark " the corresponding binary code in every pair of optical fiber of light pulse transmitting/receiving end.
2. an application rights requires the character wheel-type direct-reading gauge outfit of 1 described method, comprises character wheel, light pulse transmitting terminal and light pulse receiving end, it is characterized in that
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the retroreflective regions corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from retroreflective regions, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the homonymy of character wheel.
3. character wheel-type direct-reading gauge outfit according to claim 2 is characterized in that counting five equilibrium according to the system of character wheel on the card of described character wheel, posts reflecting mark plaster in the position accordingly with character, consists of retroreflective regions; The right relevant position of reflective spot on the reflecting mark plaster and the optical fiber of transmitting/receiving end is corresponding.
4. an application rights requires the character wheel-type direct-reading gauge outfit of 1 described method, comprises character wheel, light pulse transmitting terminal and light pulse receiving end, it is characterized in that
The light pulse transmitting terminal comprises optical pulse transmitter and optical fiber; The coded electronic pulse converts the coded light pulses of equivalence to through optical pulse transmitter; With lens coded light pulses is focused on optical fiber, coded light pulses is transmitted in optical fiber; Coded light pulses shines the ad-hoc location on the character wheel, and this ad-hoc location is provided with the transmission region corresponding with character on the character wheel;
The light pulse receiving end comprises light pulse receiver and optical fiber; By the coded light pulses of optical fiber reception from transmission region, and be transferred to the light pulse receiver, by the light pulse receiver coded light pulses converted to equivalent coded electronic pulse, again by the decoder module decoding, finally obtain the respective symbols of character wheel;
The optical fiber of the optical fiber of light pulse transmitting terminal and light pulse receiving end is located at the heteropleural of character wheel.
5. character wheel-type direct-reading gauge outfit according to claim 4 is characterized in that counting five equilibrium according to the system of character wheel on the card of described character wheel, is provided with light tank in the position accordingly with character, consists of transmission region; The right relevant position of the diaphanous spot of light tank and the optical fiber of transmitting/receiving end is corresponding.
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| CN 201110006261 CN102147279B (en) | 2011-01-13 | 2011-01-13 | Character-wheel-type meter reading method and character-wheel-type direct-reading meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110006261 CN102147279B (en) | 2011-01-13 | 2011-01-13 | Character-wheel-type meter reading method and character-wheel-type direct-reading meter |
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| CN102147279A CN102147279A (en) | 2011-08-10 |
| CN102147279B true CN102147279B (en) | 2013-02-13 |
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| CN 201110006261 Expired - Fee Related CN102147279B (en) | 2011-01-13 | 2011-01-13 | Character-wheel-type meter reading method and character-wheel-type direct-reading meter |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501896A (en) * | 2014-11-19 | 2015-04-08 | 湖北泽捷电子科技有限公司 | Optical fiber direct-reading water gauge |
| CN104501895B (en) * | 2014-11-19 | 2017-11-28 | 湖北泽捷电子科技有限公司 | Optical fiber direct-reading gauge head |
| CN106441463A (en) * | 2016-07-19 | 2017-02-22 | 柳州龙辉科技有限公司 | Water volume monitor |
| CN106323400A (en) * | 2016-10-20 | 2017-01-11 | 宁波甬港仪表有限公司 | Automatic meter reading system provided with optical waveguides and used for meter |
| CN107631775A (en) * | 2017-11-06 | 2018-01-26 | 陕西银河电力仪表股份有限公司 | System is implemented in a kind of new water meter mechanical character wheel direct-reading |
| CN110967080A (en) * | 2019-08-27 | 2020-04-07 | 南京工程学院 | Device for remote reading and transmission of natural gas meter readings |
| CN110610605A (en) * | 2019-09-06 | 2019-12-24 | 南京工程学院 | Binary coding-based gas data acquisition device and use method thereof |
| CN111121899B (en) * | 2019-12-26 | 2022-01-14 | 青岛中润设备仪表有限公司 | Low-cost photoelectric direct-reading water meter reading method |
| CN111912440A (en) * | 2020-09-04 | 2020-11-10 | 大连华锐重工集团股份有限公司 | System and method for detecting absolute position of track crane equipment |
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| CN2241886Y (en) * | 1995-08-08 | 1996-12-04 | 王俊锋 | Mechanical kilowatt-hour meter with digital signal output |
| CN1438474A (en) * | 2003-03-26 | 2003-08-27 | 张辉 | Long-distance collection and transmission method and apparatus for counting of wheel-type counter |
| CN2876720Y (en) * | 2005-05-23 | 2007-03-07 | 张厚珕 | Photoelectric reading pointer type water-meter counter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6047922A (en) * | 1983-08-26 | 1985-03-15 | Kinmon Seisakusho:Kk | Telemetering apparatus for water meter |
| CN202057369U (en) * | 2011-01-13 | 2011-11-30 | 南京邦耀科技发展有限公司 | Character wheel-type direct-reading gauge outfit |
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2011
- 2011-01-13 CN CN 201110006261 patent/CN102147279B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241886Y (en) * | 1995-08-08 | 1996-12-04 | 王俊锋 | Mechanical kilowatt-hour meter with digital signal output |
| CN1438474A (en) * | 2003-03-26 | 2003-08-27 | 张辉 | Long-distance collection and transmission method and apparatus for counting of wheel-type counter |
| CN2876720Y (en) * | 2005-05-23 | 2007-03-07 | 张厚珕 | Photoelectric reading pointer type water-meter counter |
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