CN102374883A - Flowmeter - Google Patents
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- CN102374883A CN102374883A CN2010102597273A CN201010259727A CN102374883A CN 102374883 A CN102374883 A CN 102374883A CN 2010102597273 A CN2010102597273 A CN 2010102597273A CN 201010259727 A CN201010259727 A CN 201010259727A CN 102374883 A CN102374883 A CN 102374883A
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Abstract
The invention provides a flowmeter. In the flowmeter, an operation unit is provided with a detection system, builds characteristic data in a normal flowing state of the flowmeter, can receive actual data measured in an actual flowing state of the flowmeter, performs comparative calculus analysis on the actual data and the characteristic data, acquires continuous data of variation degree between the actual data and the characteristic data, and judges whether the variation degree is out of an allowable range or not so as to determine whether early warning signals are sent to an early warning system or not; meanwhile, the flowmeter deduces bidirectional calibration parameters and matches the application of flow direction judgment, so that the flowmeter can do bidirectional measurement; the flowmeter is additionally provided with a leakage warning system so as to send warning signals when sensing leakage conditions; and the flowmeter is provided with a built-in communication chip and transmits and receives signals by using a base station in a way of mobile phone communication, so that the long-distance transmission is facilitated.
Description
[technical field]
The present invention is meant a kind of flowmeter of making self-detection, bidirectional measuring, leakage loss caution and automatic meter reading especially about a kind of flowmeter.
[background technology]
Flowmeter is a kind of admeasuring apparatus that is installed between fluid circuit, comprises liquid and gas at the fluid of this indication.The effect summary of convention flowmeter is as shown in Figure 1; In the internal structure of flowmeter is formed, a sensor is arranged; In order to the flow (metering) of sensing (measurement) fluid, flow velocity data such as (meter speed), and make record (meter reading), then can flowmeter originally on one's body display box do directly to show (numeral demonstration or electronic type demonstration all have); Or with write down (meter reading) data transmit via long distance, and does demonstration or storage in addition at a distance.This wherein, flowmeter is because of the difference of its internal sensor binding mode, can divide into vane-wheel type flowmeter, electromagnetic flowmeter, ultrasonic flow and take into account the multiple kenel of eddy-current flowmeter or the like.
In fact, flowmeter is a kind of and the dynamic admeasuring apparatus fluid Long contact time.Refer to that it is " dynamic "; Be because of comprising the flow field that fluid constitutes and surrounding the fluid environment of sensor in the flowmeter; And the effect situation that flowmeter itself carries out sensing (measurement) all is continuous dynamic action; Therefore also the operating condition and the residing environmental aspect of flowmeter of flowmeter itself all possibly have influence on the accuracy of flowmeter at any time, and cause the data generation errors such as flow, flow velocity of the fluid that measures.This kind influences flowmeter accuracy possibility disappearance because of external factor, on present convention flowmeter, is that the oneself knows or prior self-early warning in advance.The convention flowmeter can only loyally be noted down fluid data get off according to itself operating condition and residing environmental aspect at present; When even if deviation (for example rotate break down) or the residing environment generation of flowmeter undesirable condition (for example muddy the and influence of water quality is flowed) have taken place in the operating condition of flowmeter itself; The convention flowmeter also can only loyally reflect fluid data; And can't go to do the early warning action that any oneself detects, and must wait until that record or monitoring personnel realize when resulting data recording a period of time is undesired, just can start service work; But when often be catastrophic failure this moment, cause the numerous and diverse of maintenance and more cost.This shows, can't the oneself detect can the say so maximum disappearance of present convention flowmeter of early warning early.
Moreover; The convention flowmeter all can only be made unidirectional (forward) and measure; Therefore this is because flowmeter is to be assembled according to the order with fluid relativity (contact) by some concrete spare parts, all is to be relative position and the interactively that action direction removes to arrange each spare part with fluid from the forward inflow in the design, and after completing; The sampled-current body carries out parameter correction from the mode of the actual inflow of forward deduces, and proofreaies and correct according to this and obtains correct measurement.All be to design and make for action direction from the forward inflow promptly to fluid because of flowmeter; Therefore the convention flowmeter is used for being bound to produce gross error when oppositely measuring; This is because the fluid self-reversal is when flowing into; The order of each spare part of flowing through is opposite, so that each spare part receives the relativity of fluid is also different fully, causes the reverse result who measures to measure with forward and differ quite big.So generally speaking, after accomplishing, the manufacturing of convention flowmeter all can flow in marked effect in appearance, and with installation, also can state on the operational manual and only make forward and unidirectional measurement usefulness, be not suitable for reverse measurement.
Because of flowmeter is a kind ofly to be combined by concrete spare part; Use dynamic admeasuring apparatus with the fluid Long contact time; Add it often is to be embedded in for a long time under the face of land; Receive the influence of various pressure, earthquake and pipeline inside water pressure, therefore use day long afterwards, can leakage loss take place built on the sand because of engaging unavoidably.The convention flowmeter can't be made any caution for leakage loss phenomenon system, so also show for undesirable.
Aforementioned mentioning, the convention flowmeter can be noted down the data that sensing obtains earlier (meter reading), recorded data is transmitted via long distance again, is beneficial to show at a distance or store.And on the convention flowmeter for the transmission of data; Generally be to carry out with telecommunication bureau's local line ways of connecting to carry out; For example: TaiWan, China 82.02.11 notification number 200264; Name is called " dial-out type telephone network meter reading interface arrangement " case, and 280437 of TaiWan, China 85.07.01 notification numbers are called, and " " case promptly all is to carry out this kind transmission mode to the telemetering device of gauging table.The modern use and the base station coverage rate of mobile phone have on the market reached borderless stage, carry out transmission manner so carry out telecommunication bureau's local line connection to convention, should improve in fact, make things convenient for boundary to reach.
[summary of the invention]
Fundamental purpose of the present invention is promptly providing a kind of flowmeter that the oneself detects of doing; Mainly be when flowmeter carries out the fluid measurement; More can the fluid data that institute's sensing obtains be done calculation and analysis on the numerical value via a detection system; To estimate and the possible variation situation of early warning, in order to taking precautions against variation early.
Another fundamental purpose of the present invention is then providing a kind of flowmeter of making bidirectional measuring; Mainly be to carry out the deduction of correction parameter to reverse the measurement; To obtain to support the reverse correction parameter of use, can make bidirectional measuring in order to same flowmeter, to enlarge its scope of application.
Another fundamental purpose of the present invention is then providing a kind of flowmeter of doing the leakage loss caution; Mainly be to be provided in to manifest the mode of droplet-shaped symbol or poster on the display screen and/or to make mode that display screen does continuous transformation (can include symbol or poster) as alerting to the leakage loss phenomenon; Know early that in order to the user leakage loss phenomenon is arranged, seek to improve.
A fundamental purpose more of the present invention be providing a kind of can be via the flowmeter of mobile phone communication modes transmission meter reading data, mainly be on flowmeter in Construction Bank's mobile phone communication chip, transmit so that the meter reading data are made long distance by the mobile phone transmission mode.
The present invention promptly designs a kind of flowmeter; Be arranged between fluid circuit, inside is equiped with a sensor, so that the fluid of flowing through is measured; And make record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware, is characterised in that: include a detection system in the arithmetic element, establish the characteristic of this flowmeter flow, flow velocity when being in the proper flow situation during manufacturing; And the real data that obtains flow, flow velocity that measures can receive this flowmeter and be in the actual flow situation time; This real data and the calculation of characteristic process comparison property are analyzed, drawn the continuous data of degree of variation between this real data and characteristic, do the setting of a permissible range simultaneously to degree of variation; And an early warning system is arranged, and be connected with this detection system, when degree of variation exceeded permissible range, this early warning system was promptly made caution.
In the above-mentioned flowmeter, this early warning system can be sent alerting.
In the above-mentioned flowmeter, this alerting is long distance to transmit, and is beneficial to long-range alarming.
A kind of flowmeter of the present invention is arranged between fluid circuit, and inside is equiped with a sensor, so that the fluid of flowing through is measured, and makes record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware; And deduce to have in the forward correction parameter load operation unit and save as calculation mechanism; Be characterised in that: flowmeter has one and differentiates the induction mechanism that flows to that flows to, but the fluid in the convection current inbound traffics meter is differentiated its flow direction; Flowmeter is also deduced reverse correction parameter is arranged, and cooperates and flow to the induction of induction mechanism to flowing to, and saves as calculation mechanism in the common load operation unit.
A kind of flowmeter of the present invention is arranged between fluid circuit, and inside is equiped with a sensor, uses the body of flowing through and his like is measured, and makes record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware; Be characterised in that: include a leakage loss caution system in the arithmetic element; Mainly be rendered in manifest droplet-shaped symbol or poster on the display screen mode as alerting, the alerting via this droplet-shaped symbol of leakage loss caution system instruction or poster when the arithmetic element sensing is learnt the leakage loss situation manifests.
In the above-mentioned flowmeter, the practicable display screen that makes of this leakage loss caution system is made the continuous transformation mode as alerting.
In the above-mentioned flowmeter, this display screen makes to include in the continuous transformation mode expression leakage loss symbol or poster.
A kind of flowmeter of the present invention is arranged between fluid circuit, and inside is equiped with a sensor; Use the body of flowing through and his like is measured; And making record, that flowmeter disposes is soft, the electronic type arithmetic element of hardware, is characterised in that: include the communication chip of building in the arithmetic element; Cooperate the transmitting-receiving signal with mobile phone communication modes and base station thereof, measured the data recording that obtains in delivery flow rate.
In the above-mentioned flowmeter, this action telephonic communication mode is at least GPRS or GSM transmission.
In the above-mentioned flowmeter, this communication chip institute delivery flow rate meter measures the data recording that obtains and comprises meter reading record and/or oneself's detection record and/or bidirectional measuring record and/or leakage loss alerting at least.
A kind of flowmeter of the present invention; Its advantage and effect are: the present invention mainly can make the action and efficacy that the oneself detects by flowmeter itself; Whether make flowmeter rotation of oneself's detection simultaneously in regular running whether normally reach environmental aspect normal; In order to finding that early fault of flowmeter own or environment shape have different disappearance, let the maintainer in time grasp situation and then maintenance early, enlarge to take precautions against infringement; Simultaneously, flowmeter of the present invention can be made bidirectional measuring, with enlarging application range; And set up the leakage loss caution system, to send alerting early, avoid leakage loss to enlarge; And in build communication chip, the flowmeter that conveniently is installed in is Anywhere accomplished the transmission of data recording long distance via the mobile phone transmission mode.
[description of drawings]
Shown in Figure 1 for the effect process flow diagram of convention flowmeter
Shown in Figure 2 is the effect process flow diagram of the embodiment of the invention
Concrete label is gone into down among the figure:
10---flowmeter 11---sensor
20---detection system 30---early warning system
40---induction mechanism 50---leakage loss caution system
The 60---communication chip
[embodiment]
Below in conjunction with accompanying drawing, technical scheme of the present invention is done further explanation.
See also shown in Figure 2ly, be the effect process flow diagram of the embodiment of the invention.The embodiment of the invention is a flowmeter 10, is arranged between fluid circuit, and inside is equiped with a sensor 11, so that the fluid of flowing through is carried out the measurement of data such as flow, flow velocity, and makes record; The flowmeter 10 of the embodiment of the invention equally can be because of the difference of its internal sensor 11 binding modes; Take into account the multiple kenel of swirlmeter or the like and can divide into vane-wheel type flowmeter, electromagnetic type flow meter, ultrasonic flow; No matter just which kind of kenel flies flowmeter, all can be the present invention and adopt, even if therefore in above-mentioned listed binding mode, do not fly flowmeter; Can be the present invention equally and adopt, and be contained in the present invention and fly in the claim.
Flowmeter of the present invention; Mainly be that electronic type arithmetic element soft by disposing, hardware is reached, wherein include a detection system 20, can be arranged at flowmeter 10 inside; Or be arranged at adjacent to by wired binding; Perhaps be arranged at by wireless link the long distance place all can, this detection system 20 has established the characteristic of this flowmeter 10 flow, flow velocity when being in the proper flow situation when making, its method for building up system places the proper flow environment with this type flowmeter 10; And actual fluid when carrying out various normal condition flows, and uses the characteristic of flow when setting up this type flowmeter 10 and being in the proper flow situation, flow velocity; During actual then the use; This detection system 20 further receives flowmeter 10 and is in the continuous real data that actual flow situation time institute sensing obtains flow, flow velocity; Then this detection system 20 is promptly further analyzed real data and characteristic through the comparison property calculation of in house software; Draw the continuous data of degree of variation between this real data and characteristic (ratio of difference value, difference value or difference number of times can become the basis of degree of variation), and be rendered as a new data recording.
Simultaneously, detection system 20 can be done the setting of a permissible range to degree of variation, and this permissible range can adjust (promptly resetting) again; After setting through permissible range, detection system 20 also connects with an early warning system 30, and this early warning system 30 also can be sent alerting, and is can the long distance transmission, in order to long-range alarming.
After this detection system 20 presented the continuous data of degree of variation, if degree of variation is in permissible range the time, then this early warning system 30 was not promptly made caution; And when degree of variation be outside permissible range the time, this early warning system 30 is promptly made caution, to let the user know that flowmeter 10 itself or flowmeter 10 residing environmental aspects should have abnormal case, in order to doing maintenance early or safeguarding.
Please continue to consult shown in Figure 2, the flowmeter 10 of the embodiment of the invention have one differentiate to flow to (forward or backwards) flow to induction mechanism 40, but mainly be that fluids in the convection current inbound traffics meter 10 are differentiated its flow direction for forward or backwards; The flowmeter 10 of the embodiment of the invention is after making completion simultaneously; Deduce out the forward correction parameter via the actual verification mode, and cooperate this induction that flows to 40 pairs of flow directions of induction mechanism, save as calculation mechanism in the common load operation unit; It is fashionable from positive flow to work as fluid during use; At first this flow to induction mechanism 40 promptly differentiate via induction for positive flow to, promptly select then the flow that is measured to be carried out correction calculation, to obtain forward flow accurately with this forward correction parameter; The flowmeter 10 of the embodiment of the invention is after making completion simultaneously; Also extrapolate reverse correction parameter, and cooperate this induction that flows to 40 pairs of flow directions of induction mechanism equally, save as calculation mechanism in the common load operation unit via the actual verification mode; During use when the fluid self-reversal flows into; This flow to induction mechanism 40 promptly differentiate via induction for for reverse direction flow to, promptly select then the flow that is measured to be carried out correction calculation, to obtain reverse flow accurately with this reverse correction parameter.More know clearly it; The flowmeter 10 that is the embodiment of the invention is calculated via actual verification; Have forward correction parameter and reverse correction parameter simultaneously; Simultaneously the flowmeter 10 of the embodiment of the invention has that differentiation flows to forward or backwards flows to induction mechanism 40, so fluid is when flowing into forward or backwards, and at first this flows to the flow direction that induction mechanism 40 can learn induction and is transferred to arithmetic element; Be about to the corresponding positive parameter of effect (forward is imitated positive parameter or oppositely imitated positive parameter) then and propose to use, proofread and correct with the flow that metering is obtained.Therefore the flowmeter 10 of the embodiment of the invention does not have the restriction of direction of flow in the use, can make bidirectional measuring, with enlarging application range.
Please continue to consult shown in Figure 2; The flowmeter 10 of the embodiment of the invention in arithmetic element, have one can send alerting leakage loss caution system 50, for unusual, alerting of the present invention mainly be one can be manifested (appearing in one's mind) by instruction droplet-shaped symbol or poster (for example: the poster of " LEAK " or " attention has leakage "); Have a display surface on flowmeter 10 bodies; Mainly be provided with indicator gauge or display screen, with video data record (serves as many to show overall metering), at present general display surface is common to establish LCDs; The present invention promptly is provided with a droplet-shaped symbol or a poster in LCDs; When the arithmetic element of flowmeter 10 does not sense the leakage loss situation, promptly do not manifest droplet-shaped symbol or poster (that is droplet-shaped symbol or poster do not manifest) in this display screen, and when the arithmetic element sensing has been learnt the leakage loss situation; Promptly display (that is showing droplet-shaped symbol or poster on the LCDs) via leakage loss caution system 50 these droplet-shaped symbols of instruction or poster; And can be designed to do to continue to manifest or glimmer to manifest, letting user's vigilance know has the leakage loss situation to exist, in order to inspecting maintenance early.And when not had the leakage loss situation after the maintenance, leakage loss caution system 50 promptly stops to manifest of interior droplet-shaped symbol of display screen or poster.
Leakage loss caution system 50 is except that practicable above-mentioned continue or flicker manifests droplet-shaped symbol or poster as the alerting; The also practicable mode that makes display screen do continuous transformation is used as alerting; Wherein, the pattern of continuous transformation is a lot of, can't enumerate one by one in fact; Only for example; The display screen of flowmeter generally is the normal record (serve as many to show overall metering) that shows, can be designed as then when the arithmetic element sensing has been learnt the leakage loss situation, promptly via leakage loss caution system 50 these display screens of instruction do " showing record " → " stopping to show " → " demonstration leakage loss " → " stopping to show " → " showing record " → " stopping demonstration " → " demonstration leakage loss " → " stopping demonstration " → ... The continuous transformation pattern to express alerting; Wherein, " stopping to show " is exactly the state of the unexpected tripping of display screen (shape is like anti-white); " demonstration leakage loss " then is the symbol or the poster of show expressing leakage loss, for example can show the droplet-shaped symbol, shows that perhaps the poster etc. of " LEAK " or " attention has leakage " all can.More than be merely and illustrate, be not so promptly limit to claim of the present invention.
Please continue to consult shown in Figure 2; The data recording that 10 measurements of the flowmeter of the embodiment of the invention obtain; Can on flowmeter 10 display surfaces own, do directly to show by an indicator gauge or display screen; Removing this also can be with these data recording by the long distance transmission means; The receiver that transfers to long distance receives, and remakes the operation that shows or store, and long distance transmission means wherein of the present invention is on the arithmetic element of flowmeter 10, to build to be equipped with a communication chip 60 (SIM); And cooperate with mobile phone communication dealer; The communication chip 60 put built can receive and dispatch signal (being at least GPRS or GSM transmission) via communication modes and base station thereof that mobile phone communication dealer manages, so the present invention can accomplish the long distance transmission with the data recording (can comprise meter reading record and/or oneself at least and detect record and/or bidirectional measuring record and/or leakage loss alerting) that 10 measurements of flowmeter of being located at Anywhere obtain via the mobile phone transmission mode by mobile phone base station coverage rate general on the market now.
Can know by above explanation; Principal feature of the present invention is that the arithmetic element of flowmeter is provided with a detection system, establishes the characteristic of this flowmeter flow, flow velocity when being in the proper flow situation, and the real data that obtains flow, flow velocity that measures can receive flowmeter and be in the actual flow situation time; Real data and the calculation of characteristic process comparison property are analyzed; Draw the continuous data of a degree of variation, and differentiation, to do the decision of whether early warning through whether exceeding permissible range.Simultaneously, flowmeter of the present invention is deduced the bidirectional correcting parameter, and collocation flows to the application of differentiating, and makes flowmeter can do bidirectional measuring, with enlarging application range.Simultaneously; Flowmeter of the present invention is set up the leakage loss caution system; When the arithmetic element sensing has been learnt the leakage loss situation, promptly send alerting via this leakage loss caution system, practicable repeater panel continues or mode and/or the repeater panel that manifests droplet-shaped symbol or poster that glimmer made the continuous transformation mode of (can include the symbol or the poster of expressing leakage loss); Let the user be able to inspect early maintenance, avoid leakage loss to enlarge.Simultaneously; Flowmeter of the present invention is built communication chip in more; By communication modes and the base station transmitting-receiving signal (being at least GPRS or GSM transmission) thereof that mobile phone communication dealer manages, can accomplish the long distance transmission via the mobile phone transmission mode with the data recording that conveniently is installed in flowmeter Anywhere.
The present invention improves via above-mentioned innovation; Can possess many practical effects in the use; The most basically all be to be installed in regard to the use present situation at meagrely-populated place, countryside with regard in fact a lot of flowmeters; The present invention mainly can make the self-action and efficacy that detects by flowmeter itself, and whether normal, in order to finding that early fault of flowmeter own or environment shape have different disappearance if making flowmeter rotation of oneself's detection simultaneously in regular running whether normally reach environmental aspect; Let the maintainer in time grasp situation and then maintenance early, enlarge to take precautions against infringement; Simultaneously, flowmeter of the present invention can be made bidirectional measuring, with enlarging application range; And set up the leakage loss caution system, to send alerting early, avoid leakage loss to enlarge; And in build communication chip, the flowmeter that conveniently is installed in is Anywhere accomplished the transmission of data recording long distance via the mobile phone transmission mode, all this has possessed all promotes the fact of using effect.
Claims (10)
1. flowmeter; Be arranged between fluid circuit, inside is equiped with a sensor, and the fluid of using flowing through measures; And make record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware, is characterised in that: include a detection system in the arithmetic element, establish the characteristic of this flowmeter flow, flow velocity when being in the proper flow situation during manufacturing; And the real data that obtains flow, flow velocity that measures can receive this flowmeter and be in the actual flow situation time; This real data and the calculation of characteristic process comparison property are analyzed, drawn the continuous data of degree of variation between this real data and characteristic, do the setting of a permissible range simultaneously to degree of variation; And an early warning system is arranged, and be connected with this detection system, when degree of variation exceeded permissible range, this early warning system was promptly made caution.
2. flowmeter according to claim 1 is characterized in that: this early warning system can be sent alerting.
3. flowmeter according to claim 2 is characterized in that: this alerting is long distance to transmit, and is beneficial to long-range alarming.
4. a flowmeter is arranged between fluid circuit, and inside is equiped with a sensor, and the fluid of using flowing through measures, and makes record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware; And deduce to have in the forward correction parameter load operation unit and save as calculation mechanism; Be characterised in that: flowmeter has one and differentiates the induction mechanism that flows to that flows to, and the fluid in the convection current inbound traffics meter is differentiated its flow direction; Flowmeter is also deduced reverse correction parameter is arranged, and cooperates and flow to the induction of induction mechanism to flowing to, and saves as calculation mechanism in the common load operation unit.
5. a flowmeter is arranged between fluid circuit, and inside is equiped with a sensor, and the fluid of using flowing through measures, and makes record; That flowmeter disposes is soft, the electronic type arithmetic element of hardware; Be characterised in that: include a leakage loss caution system in the arithmetic element; Mainly the mode through manifesting droplet-shaped symbol or poster on the display screen is as alerting; When the arithmetic element sensing had been learnt the leakage loss situation, promptly the alerting via leakage loss caution system this droplet-shaped symbol of instruction or poster manifested.
6. flowmeter according to claim 5 is characterized in that: this leakage loss caution system is made the continuous transformation mode as alerting through display screen.
7. flowmeter according to claim 6 is characterized in that: this display screen makes to include in the continuous transformation mode symbol or the poster of expressing leakage loss.
8. a flowmeter is arranged between fluid circuit, and inside is equiped with a sensor; The fluid of using flowing through measures; And making record, that flowmeter disposes is soft, the electronic type arithmetic element of hardware, is characterised in that: include the communication chip of building in the arithmetic element; Cooperate the transmitting-receiving signal with mobile phone communication modes and base station thereof, measured the data recording that obtains in delivery flow rate.
9. flowmeter according to claim 8 is characterized in that: this action telephonic communication mode is at least GPRS or GSM transmission.
10. flowmeter according to claim 8 is characterized in that: this communication chip institute delivery flow rate meter measures the data recording that obtains and comprises meter reading record and/or oneself's detection record and/or bidirectional measuring record and/or leakage loss alerting at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102597273A CN102374883A (en) | 2010-08-23 | 2010-08-23 | Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102597273A CN102374883A (en) | 2010-08-23 | 2010-08-23 | Flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102374883A true CN102374883A (en) | 2012-03-14 |
Family
ID=45793825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102597273A Pending CN102374883A (en) | 2010-08-23 | 2010-08-23 | Flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102374883A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272801A (en) * | 1997-08-08 | 2000-11-08 | 泰里迪尼工业公司 | Flowmeter system useable with water treatment device |
| JP2002156304A (en) * | 2000-11-15 | 2002-05-31 | Tokyo Gas Co Ltd | Gas meter and gas leak detection method |
| CN101140179A (en) * | 2007-10-24 | 2008-03-12 | 北京交通大学 | Household water leakage prevention method and intellectual water meter |
| WO2009110213A1 (en) * | 2008-03-07 | 2009-09-11 | パナソニック株式会社 | Flow volume measuring apparatus |
-
2010
- 2010-08-23 CN CN2010102597273A patent/CN102374883A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272801A (en) * | 1997-08-08 | 2000-11-08 | 泰里迪尼工业公司 | Flowmeter system useable with water treatment device |
| JP2002156304A (en) * | 2000-11-15 | 2002-05-31 | Tokyo Gas Co Ltd | Gas meter and gas leak detection method |
| CN101140179A (en) * | 2007-10-24 | 2008-03-12 | 北京交通大学 | Household water leakage prevention method and intellectual water meter |
| WO2009110213A1 (en) * | 2008-03-07 | 2009-09-11 | パナソニック株式会社 | Flow volume measuring apparatus |
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Application publication date: 20120314 |