CN2689176Y - Controller of straight-reading digital count meter - Google Patents
Controller of straight-reading digital count meter Download PDFInfo
- Publication number
- CN2689176Y CN2689176Y CN 200420033404 CN200420033404U CN2689176Y CN 2689176 Y CN2689176 Y CN 2689176Y CN 200420033404 CN200420033404 CN 200420033404 CN 200420033404 U CN200420033404 U CN 200420033404U CN 2689176 Y CN2689176 Y CN 2689176Y
- Authority
- CN
- China
- Prior art keywords
- meter
- photoelectric
- photoelectric coding
- character wheel
- infrared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a counting meter controlling device which can directly read and record the reading and is applicable to the remote meter reading system such as the water meter, the electricity meters, the gas meter, etc. A microprocessor is connected with a communication module, and orderly control an optoelectronic code transmitting device to light up a transmitting tube after receiving the meter reading command sent out by a main control upper machine through the communication module. Each light source passes through a print wheel after converting into approximate parallel light through an optical grating. An optoelectronic code receiving device receives the signal generated by the meter reading. The signal reading is stored to a nonvolatile memory through transforming of an electromechanical transformation device, and the data is uploaded to the main control upper machine through the communication module. The utility model verily makes the passive pointer. The electronic part of the pointer is not needed to add electricity, and only needs to supply electricity by the collector in the moment of reading meter. The utility model does not exist with the phenomenon of missing record created by the malfunction of the electric source and the battery of the traditional mode. The installationis easy, the adjustment is simple, the system is not needed to initialize, the maintenance is very convenient, and the work load of the maintenance is few.
Description
Technical field:
The utility model relates to a kind of counting device, particularly a kind of count table control device that can directly read and write down reading that is applicable to long-distance meter-reading systems such as water, electricity, gas.
Background technology:
In recent years, along with deepening constantly of China's IT industry construction and improving constantly of people's living standard, people no longer are confined on the hardware foundations such as area, finishing, surrounding enviroment and supporting communal facility in house the requirement of house, but intellectuality, the digitizing aspect of eye having been invested more and more community.Central three meter transcribing system becomes a current hot issue in the ascendant as one of the most basic ingredient in intelligent residential district.On the one hand increasing developer is in the process of the update of the gas meter of its newly-built residential quarters, water meter, ammeter, and central three meter transcribing system also becomes the object of paying close attention to of relevant departments and unit.Central three meter transcribing system is that original water, electricity and gas is checked meter and revolution of charge method.For a long time, water, electricity and gas is checked meter and charge method rests on behind the road of being checked meter from house to house, being charged by the person of checking meter on the level always, and efficient is low on the one hand for this counting cost by gas meter mode, and workload is big, has wasted lot of manpower and material resources; On the other hand, this mode is also utilized by the offender easily, threatens the lives and properties of resident family.Therefore, this counting cost by gas meter mode can't adapt to the era development needs.Just in this case, central three meter transcribing system is ready to appear.So-called central three meter transcribing system utilizes computer and network technologies exactly, and the water, electricity and gas data that the user uses are regularly collected automatically, gathered, and is saved in the computing machine of foreground, according to user's use data, calculates, prints various charge documents.Central three meter transcribing system has changed the past manual meter reading method, the person of checking meter is freed from loaded down with trivial details work of past, not only improve the work efficiency of water, electricity and gas administrative authority, reduced the human capital input, reduced cost, improved image, and for these industries have improved reliable modern management means, the various disadvantages in the management of avoiding over increase the scientific and technological content of residential building and intelligent level, make things convenient for the estate management of house, improved resident's quality of life.
Central three meter transcribing system mainly comprises this several sections: the table tool with teletransmission function; Data acquisition unit; Communication network; Main control computer.Wherein, the table tool has determined the accuracy of whole central three meter transcribing system.In present most central three meter transcribing system, the remote installed meter tool of use is a pulsed.Use this pulsed remote installed meter tool centralized meter-reading system often all to have following problem: 1. this pulsed table tool mistake is easily sent out pulse, causes counting to be forbidden; 2. if data acquisition unit has a power failure or breaks down, the pulse that the table tool sends just can't add up, and causes data to be made mistakes.Because metering is inaccurate, the application of central three meter transcribing system and development have been subjected to very big influence and restriction.
At present, the remote installed meter tool that comprises reflective optical encoder formula, photography formula etc. all in various degree have a variety of issue, be subjected to extraneous as greasy dirt or contamination by dust and cisco unity malfunction or photography in the echo area easily, also have no way of judging because of the coding between sphere and the echo area easily and have the dead band, intermediateness between numeral and numeral and have no way of judging, and the pictorial data amount is big, during transmission cost, and difficult treatment.
Summary of the invention:
Goal of the invention of the present utility model provides a kind of novel count table control device that can directly read and write down reading that is applicable to long-distance meter-reading systems such as water, electricity, gas, this direct-reacting digital calculates the numerical table control device and can read effectively and accurately and record sheet tool data, character wheel is provided with specific markers, the various states of the character wheel that utilizes photoelectric sensor to judge obtain the character wheel reading, and are sent to concentrator or manual operator; The utility model can directly read the numeral of character wheel at display window, and accurately, the precision height, data transmission is not influenced by extraneous various factors such as magnetic etc., stopped to read the misoperation of numeral, long service life, can organically combine with tele-control system, reliable, daily servicing convenience, install and easy to use, and this direct-reading register by communication bus directly with the reading teletransmission of showing, communication bus interface can be 485 buses, CAN bus, or M-BUS, can be widely used in all kinds of remote centralized Automatic meter reading system.
Concrete technical scheme of the present utility model is as follows:
A kind of direct-reacting digital count table control device comprises control master module, mechanical transmission control device, photoelectric conversion device and table tool, and the control master module comprises microprocessor, power module, communication module, nonvolatile memory; Mechanical transmission control device comprises the photoelectric coding emitter, contains the character wheel of the code channel of encoding, photoelectric coding receiving trap; It is characterized in that: microprocessor is connected with communication module, after receiving the order of checking meter that the master control host computer sends by communication module, control the photoelectric coding emitter successively and light power valve, each light source passes through character wheel after becoming approximate directional light via grating, receive the signal that table tool reading produces by the photoelectric coding receiving trap, and with this this signal reading process photoelectric conversion device conversion, be saved in the nonvolatile memory, upload data to the master control host computer by communication module; Nonvolatile memory is preserved the coding of this table tool simultaneously; Power module is respectively main control template, photoelectric coding emitter and photoelectric coding receiving trap simultaneously operating voltage is provided.
Master control host computer described in the utility model is that the main control computing machine is connected with a plurality of control master modules through a plurality of data concentrators respectively, can be with a plurality of data concentrators, and described each data concentrator is connected control with many groups table tool respectively.
The utility model is applicable to tele-control system, and its workflow is: form a multilayer master-slave network by 485 buses.At any time main frame only communicates with a table tool at random.Do not communicate by letter between the table tool.When checking meter work, main control computer sends the order of checking meter and gives data concentrator, and this order comprises coding, table tool group coding, the table tool coding of data concentrator.After corresponding data concentrator was received this order of checking meter, according to table tool group coding, pilot relay switched to this group table tool with power supply.Send the order of checking meter then, this order comprises table tool coding.After corresponding table tool is received this order of checking meter, read table tool data, and return to data concentrator.Data concentrator returns these data to this main control computer again.Main control computer is sent out the next one order of checking meter then, has all copied up to all table tools.Checking meter finishes, and data concentrator disconnects power supply and table tool by pilot relay.
Photoelectric coding emitter described in the utility model comprises infrared or red emission pipe and photoelectric coding countdown circuit, each is infrared or a red emission Guan Zaiyi circumferential plane is interior evenly distributes, and corresponding with the position infrared or the ruddiness light activated element in the photoelectric coding receiving trap, and each infrared or red emission pipe provides the source of parallel light of emission not intersect mutually; Described photoelectric coding receiving trap comprises infrared or ruddiness light activated element and receiving circuit, infrared or ruddiness light activated element is low impedance state under illumination, under unglazed, be high impedance status, and it is each infrared or ruddiness light activated element evenly distribution in same circumferential plane, and corresponding with the position infrared or the red emission pipe in the photoelectric coding emitter.
Table tool described in the utility model comprises character wheel, rotation axis, photoelectric encoder emitter and photoelectric coding receiving trap are arranged between the character wheel, and character wheel is provided with the corresponding code channel of directional light with photoelectric coding emitter and emission of photoelectric coding receiving trap or reception.Described code channel is to be positioned to be the fan-shaped directional light passage of strip on the character wheel, comprises two code channels that are positioned at rotational axis hole both sides on the character wheel.
The utility model design photoelectric encoder reads the angle at character wheel place, thereby obtains the current numeral at display window of character wheel, and then obtains the reading of base table; The utility model can directly read the numeral of character wheel at display window, and accurately, the precision height, data transmission is not influenced by extraneous various factors such as magnetic etc., stopped to read the misoperation of numeral, long service life, and can organically combine with tele-control system, reliable, daily servicing convenience, installation and easy to use.
Accompanying drawing and drawing explanation:
Fig. 1 planar structure synoptic diagram of the present utility model
The planar structure synoptic diagram of Fig. 2 the utility model character wheel
The mounting plane structural representation of the infrared transmitting tube in Fig. 3 the utility model emitter
Infrared optical sensor mounting plane structural representation in Fig. 4 the utility model receiving trap
Fig. 5 countdown circuit figure described in the utility model
Fig. 6 receiving circuit figure described in the utility model
Fig. 7 the utility model is applicable to the system block diagram of tele-control system
Fig. 8 structure principle chart of the present utility model
Table tool 1, photoelectric conversion device 2, display window 3, character wheel 4, rotation axis 5, photoelectric encoder 6, photoelectric coding emitter 7, photoelectric coding receiving trap 8, code channel 9, infrared or ruddiness light activated element 10, infrared or red emission pipe 11.
Embodiment:
Embodiment 1
A kind of direct-reacting digital count table control device comprises control master module, mechanical transmission control device, photoelectric conversion device 2 and table tool 1, and the control master module comprises microprocessor, power module, communication module, nonvolatile memory; Mechanical transmission control device comprises photoelectric coding emitter 7, character wheel 4, photoelectric coding receiving trap 8; It is characterized in that: microprocessor is connected with communication module, after receiving the order of checking meter that the master control host computer sends by communication module, control photoelectric coding emitter 7 successively and light power valve 11, each light source passes through character wheel 4 after becoming approximate directional light via grating, receive the signal that table tool 1 reading produces by photoelectric coding receiving trap 8, and with these these signal reading process photoelectric conversion device 2 conversions, be saved in the nonvolatile memory, upload data to the master control host computer by communication module; Nonvolatile memory is preserved the coding of this table tool 1 simultaneously; Power module is respectively main control template, photoelectric coding emitter 7 and photoelectric coding receiving trap 8 simultaneously operating voltage is provided.
Master control host computer described in the utility model is that the main control computing machine is connected with a plurality of control master modules through a plurality of data concentrators respectively, can be with a plurality of data concentrators, and described each data concentrator is connected control with many groups table tool respectively.
Photoelectric coding emitter 7 described in the utility model comprises infrared transmitting tube 11 and photoelectric coding countdown circuit 12, each infrared transmitting tube 11 evenly distributes in a circumferential plane, and corresponding with the position of infrared optical sensor 10 in the photoelectric coding receiving trap 8, and each infrared transmitting tube 11 provides the source of parallel light of emission not intersect mutually; Described photoelectric coding receiving trap 8 comprises infrared optical sensor 10 and receiving circuit 13, infrared optical sensor 10 is low impedance state under illumination, under unglazed, be high impedance status, and each infrared optical sensor 10 evenly distributes in same circumferential plane, and corresponding with the position of infrared transmitting tube 11 in the photoelectric coding emitter 7.
Table tool 1 described in the utility model comprises character wheel 4, rotation axis 5, photoelectric encoder emitter 7 and photoelectric coding receiving trap 8 are arranged between the character wheel 4, and character wheel 4 is provided with the corresponding code channel 9 of directional light with photoelectric coding emitter 7 and 8 emissions of photoelectric coding receiving trap or reception.Described code channel 9 is to be positioned to be the fan-shaped directional light passage of strip on the character wheel 4, comprises two code channels 9 that are positioned at both sides, rotation axis 5 hole on the character wheel 4.
As a same reason, red emission pipe, ruddiness light activated element can be realized goal of the invention of the present utility model equally.
Embodiment 2
Principle of work of the present utility model is as follows:
When reading, CPU controls radiating circuit, makes 5 power valves simultaneously luminous.The luminous energy that power valve sends does not arrive corresponding receiving tube, then leans on the determining positions of code channel.Code channel is made on the character wheel, along with character wheel rotates and the change position.Like this, when character wheel was in diverse location, the position of code channel was also different, the light that is blocked by it and see through its to arrive the light of receiving tube also different, thus the state that receiving tube is presented is also different.Such as: when character wheel when the numeral of display window is " 0 ", light transmission code channel that power valve A, B, D send arrives A1, B1, the D1 receiving tube, and the light that power valve C, E send can't reach C1, E1 receiving tube because of being blocked by code channel, and like this, we can obtain a binary coding 00101; When character wheel when the numeral of display window is " 1 ", the light transmission code channel that power valve B sends reaches the B1 receiving tube, and the light that power valve A, C, D, E send can't reach A1, C1, D1, E1 receiving tube because of being blocked by code channel, and like this, we can obtain a binary coding 10111; Each character wheel has ten numerals, respectively corresponding 10 codings, and in order to ensure precision, we increase a coding in the middle of two numerals, be 20 codings so altogether.By design, we guarantee that each coding all is a position on unique corresponding character wheel.CPU just can identify the numeral of the display window of character wheel according to coding, thereby realizes the direct-reading function of table tool.
When emissioning controling signal was high level, triode ended as Fig. 5, and luminotron extinguishes when emissioning controling signal is low level, the triode conducting, and luminotron is lighted.As Fig. 6 when intensity of illumination is enough, the phototriode conducting, output low level then, when intensity of illumination was not enough, phototriode ended, and then exported high level.The receiving circuit of this circuit one tunnel, each character wheel have five receiving circuits the same with this figure, N1 in the receiving circuit and the D1 correspondence in the radiating circuit, and N2 and D2 correspondence, the rest may be inferred by analogy for it.
Embodiment 4
The transmission principle of the remote system that the utility model was suitable for is as follows:
The data transmission of direct-reading sensor adopts the communication of M-BUS bus mode.
(Meter-BUS EN1434-3) is consumer instrument current international practice standard to a.M-BUS.Its topological structure is tree type bus structure.Adopt common two core cable to connect, finish the function that table meter power supply and data communication are provided simultaneously.
The b.M-BUS bus need not be distinguished polarity when connecting, can be according to randomly topologically structured cable wiring manufacture, and its construction cost and difficulty descend greatly.
The working pressure of c.M-BUS bus is 20V-30V, and driving force reaches 300mA, and communication length can reach 100m, and communication speed is 2400dps.Bus can be hung the table meter more than 100.
The d.M-BUS bus has good opening, can with state's appearance meter direct organization, as U.S. Siemens calorimeter, German He Delumeite calorimeter.
Embodiment 5
Important technological parameters of the present utility model is as follows:
1. base table specification and basic parameter thereof
Product specification flow maximum flow minimum flow working pressure range operating ambient temperature
J2.5 2.5m
3/h 4m
3/h 0.025m
3/h 0.5-50kPa 0-40℃
J4 4m
3/h 6m
3/h 0.04m
3/h 0.5-50kPa 0-40℃
J6 6m
3/h 10m
3/h 0.06m
3/h 0.5-50kPa 0-40℃
2. show basic error in dipping: meet the regulation among the GB/T6968-1997.
Dynamoelectric signal conversion error in dipping≤± 1m
3
Pressure loss value≤200Pa.
Maximum directly teletransmission is apart from 1km.
Operating voltage: 12V.
Maximum instantaneous working current: 150mA.
System's average power consumption: 0.5W.
Each reading duration: less than 1 second.
The utility model adopts direct meter reading technology, has thoroughly solved the drawback of traditional step-by-step counting mode.This technology directly reads dial digital i.e. " window value ", need not to be provided with parameters such as the table truth of a matter, table constant in the collector; Need not to store data, do not have cumulative errors, really realized " meter reading ", the history that numerical value is changed in the accumulative total that is through with pulse.Reading device reads table meter location parameter in the direct-reading table, does not influence the measuring accuracy of table meter own.This reading device is reliable and stable, antijamming capability is strong, adaptive capacity to environment is strong, has thoroughly solved " pulse measurement error " and problems such as " power down pulse missings " that the pulse meter tool produces because of factors such as mechanical vibration, electromagnetic interference (EMI), power supply influence, character wheel reversings in metering process.The utility model accurate measurement, owing to be not pulse meter, so there is not the secondary measurement error, there are not cumulative errors in the formula that do not add up metering yet, has ideally realized once showing the corresponding one by one of radix and remote meter reading data.The utility model has really been accomplished " passive " table meter.The electronic section of table meter need not power up at ordinary times, is only powered by collector in meter reading moment, and power supply is not established in inside, the leakage meter phenomenon that does not exist traditional approach to cause because of power supply or battery failures.The utility model is installed easily, and debugging is simple; System need not initialization; It is very convenient to safeguard, the workload of maintenance is few.
Claims (4)
1, a kind of direct-reacting digital count table control device comprises control master module, mechanical transmission control device, photoelectric conversion device (2) and table tool (1), and the control master module comprises microprocessor, power module, communication module, nonvolatile memory; Mechanical transmission control device comprises photoelectric coding emitter (7), character wheel (4), photoelectric coding receiving trap (8); It is characterized in that: microprocessor is connected with communication module, after receiving the order of checking meter that the master control host computer sends by communication module, control photoelectric coding emitter (7) successively and light power valve (11), each light source passes through character wheel (4) after becoming approximate directional light via grating, receive the signal that table tool (1) reading produces by photoelectric coding receiving trap (8), and with this signal reading process photoelectric conversion device (2) conversion, be saved in the nonvolatile memory, upload data to the master control host computer by communication module; Nonvolatile memory is preserved the coding of this table tool (1) simultaneously; Power module is respectively main control template, photoelectric coding emitter (7) and photoelectric coding receiving trap (8) simultaneously operating voltage is provided.
2, a kind of direct-reacting digital count table control device according to claim 1, it is characterized in that: described master control host computer is that the main control computing machine is connected with a plurality of control master modules through a plurality of data concentrators respectively, can be with a plurality of data concentrators, described each data concentrator is connected control with many groups table tool (1) respectively.
3, a kind of direct-reacting digital count table control device according to claim 1, it is characterized in that: described photoelectric coding emitter (7) comprises infrared or red emission pipe (11) and photoelectric coding countdown circuit (12), each infrared or red emission pipe (11) evenly distribution in a circumferential plane, and corresponding with the position infrared or ruddiness light activated element (10) in the photoelectric coding receiving trap (8), and each infrared or red emission pipe (11) provides the source of parallel light of emission not intersect mutually; Described photoelectric coding receiving trap 8 comprises infrared or ruddiness light activated element (10) and receiving circuit (13), infrared or ruddiness light activated element (10) is low impedance state under illumination, under unglazed, be high impedance status, and it is each infrared or ruddiness light activated element (10) evenly distribution in same circumferential plane, and corresponding with the position infrared or red emission pipe (11) in the photoelectric coding emitter (7).
4, a kind of direct-reacting digital count table control device according to claim 1, it is characterized in that: described table tool (1) comprises character wheel (4), rotation axis (5), photoelectric encoder emitter (7) and photoelectric coding receiving trap (8) are arranged between the character wheel (4), and character wheel (4) is provided with the corresponding code channel (9) of directional light with photoelectric coding emitter (7) and photoelectric coding receiving trap (8) emission or reception; Described code channel (9) is to be positioned to be the fan-shaped directional light passage of strip on the character wheel (4), comprises being positioned at two code channels (9) that character wheel (4) is gone up rotation axis (5) both sides, hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033404 CN2689176Y (en) | 2004-03-26 | 2004-03-26 | Controller of straight-reading digital count meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033404 CN2689176Y (en) | 2004-03-26 | 2004-03-26 | Controller of straight-reading digital count meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689176Y true CN2689176Y (en) | 2005-03-30 |
Family
ID=34670731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420033404 Expired - Lifetime CN2689176Y (en) | 2004-03-26 | 2004-03-26 | Controller of straight-reading digital count meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689176Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102307277A (en) * | 2011-09-14 | 2012-01-04 | 华立仪表集团股份有限公司 | Metrical information processing device for passive meter |
| CN102624767A (en) * | 2011-01-30 | 2012-08-01 | 王振铎 | Intelligent energy-efficient real-time meter reading system |
| CN104501895A (en) * | 2014-11-19 | 2015-04-08 | 湖北泽捷电子科技有限公司 | Optical fiber direct-reading gauge outfit |
| CN106157588A (en) * | 2016-08-15 | 2016-11-23 | 扬州恒隆软件有限公司 | Quick high accuracy photoelectric direct-reading intelligent water meter system |
| CN110726448A (en) * | 2018-07-17 | 2020-01-24 | 新智数字科技有限公司 | Photoelectric direct-reading meter, method for realizing meter reading service and service system thereof |
-
2004
- 2004-03-26 CN CN 200420033404 patent/CN2689176Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624767A (en) * | 2011-01-30 | 2012-08-01 | 王振铎 | Intelligent energy-efficient real-time meter reading system |
| CN102307277A (en) * | 2011-09-14 | 2012-01-04 | 华立仪表集团股份有限公司 | Metrical information processing device for passive meter |
| CN102307277B (en) * | 2011-09-14 | 2015-08-26 | 华立仪表集团股份有限公司 | Metrical information processing device for passive meter |
| CN104501895A (en) * | 2014-11-19 | 2015-04-08 | 湖北泽捷电子科技有限公司 | Optical fiber direct-reading gauge outfit |
| 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 |
| CN106157588A (en) * | 2016-08-15 | 2016-11-23 | 扬州恒隆软件有限公司 | Quick high accuracy photoelectric direct-reading intelligent water meter system |
| CN110726448A (en) * | 2018-07-17 | 2020-01-24 | 新智数字科技有限公司 | Photoelectric direct-reading meter, method for realizing meter reading service and service system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1138983C (en) | Method and apparatus for electronic meter testing | |
| CN104410164B (en) | Ii type electric energy efficiency management terminal and system | |
| CN1845519A (en) | Integrative intelligent system of digitization community | |
| CN208314229U (en) | A kind of Portable gas image sensor fault detection means | |
| CN202522264U (en) | ZigBee-based wireless monitoring system for greenhouse environment | |
| CN2689176Y (en) | Controller of straight-reading digital count meter | |
| CN201314677Y (en) | Multiport multi-gear speed fan coil state monitoring device | |
| CN2689175Y (en) | Straight-reading digital count meter | |
| CN201197151Y (en) | Distributed wireless weather observing station | |
| CN103280085A (en) | Intelligent remote metering control system for cities and towns | |
| CN203719720U (en) | Direct-reading and far-transmitting water meter | |
| CN107884653B (en) | Electricity inspection equipment for extensible module | |
| CN104467181B (en) | I type electric energy efficiency management terminal and system | |
| CN2786574Y (en) | Environmental noise on-line automatic monitoring system | |
| CN102506932A (en) | Thermodynamic type energy-efficiency data acquisition terminal | |
| CN201066532Y (en) | Measuring device with remote meter reading function | |
| CN202495141U (en) | Multipurpose meter reading concentrator | |
| CN103116970B (en) | A kind of meter data gathers automatically, teletransmission and processing system and method | |
| CN1438474A (en) | Long-distance collection and transmission method and apparatus for counting of wheel-type counter | |
| CN103049999B (en) | Novel gas meter reading and valve control method | |
| CN2775766Y (en) | Hand held machine for remote radio meter recording system | |
| CN2711708Y (en) | Long distance transmission digital thermometer | |
| CN209028795U (en) | Kilowatt meter reading-out system based on photoelectric direct-reading water meter | |
| CN110594854A (en) | Indoor heat supply metering and temperature control system adopting on-off time area method | |
| CN209167531U (en) | A kind of long-range angle adjustable laser ranging monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140326 Granted publication date: 20050330 |
|
| DD01 | Delivery of document by public notice |
Addressee: Jidi Photoelectric Science & Technology Co., Ltd., Chengdu City Document name: Notification of Expiration of Patent Right Duration |