CN104330119A - Intelligent electronic water meter and metering method thereof - Google Patents
Intelligent electronic water meter and metering method thereof Download PDFInfo
- Publication number
- CN104330119A CN104330119A CN201410673849.5A CN201410673849A CN104330119A CN 104330119 A CN104330119 A CN 104330119A CN 201410673849 A CN201410673849 A CN 201410673849A CN 104330119 A CN104330119 A CN 104330119A
- Authority
- CN
- China
- Prior art keywords
- hall element
- water meter
- transmitter
- smart electronics
- pointer
- 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.)
- Pending
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention discloses an intelligent electronic water meter which comprises a mechanical water meter, a first Hall sensor, a second Hall sensor and a transmitter, wherein a magnetic substance is arranged on a pointer of the mechanical water meter; the first Hall sensor and the second Hall sensor are arranged above the mechanical water meter and are arranged on the rotating circumference of the magnetic substance at an interval; the transmitter is arranged on the exterior of the mechanical water meter; the first Hall sensor and the second Hall sensor are electrically connected with the transmitter. The intelligent electronic water meter is accurate in metering and can be acquired by updating a traditional mechanical water meter. The invention also discloses a metering method for the intelligent electronic water meter.
Description
Technical field
The present invention relates to intelligent meter data recording field, particularly relate to a kind of smart electronics water meter and metering method thereof.
Background technology
Intellectual water meter a kind ofly utilizes modern microelectronic technology, Modern Transducer Technology, intellective IC card technology to measure water consumption and carry out reportedly passing with water number and the new water meter of settlement bargain.Generally only having flow collection with conventional water meter to compare with the function that mechanical indicator shows water consumption, is very large progress.Existing Intelligent water meter controller, character wheel group and electronic counter are integrated in intellectual water meter inside, at 0.1m
3indicators turn axle arranges shadow shield, the photoelectric sensor be electrically connected with controller is set on rotation axis side, can block two photoelectric sensors when shadow shield rotates with rotation axis, photoelectric sensor detects that shadow shield Time Controller adds up, thus realizes the metering of water meter water consumption.As from the foregoing, existing Intelligent water meter controller, sensor assembly are all be integrated in water meter inside, therefore, when existing water meter is upgraded to intelligent long-distance meterage system, traditional standard machinery water meter must all be replaced with new intellectual water meter, the time-consuming height of system update, and need the manpower and materials of at substantial.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of smart electronics water meter, and this smart electronics water meter simple modifications can form on the basis of traditional mechanical water meter, is convenient to conventional water meter and escalates into intellectual water meter.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of smart electronics water meter, comprises mechanical water meter, the first Hall element, the second Hall element and transmitter; One pointer of described mechanical water meter is provided with magnetic, and described first Hall element and the second Hall element to be arranged at above mechanical water meter and to be arranged at intervals at described magnetic and rotate circumferentially; It is outside that described transmitter is arranged at described mechanical water meter, and described first Hall element and the second Hall element are electrically connected on described transmitter respectively.
For solving the problems of the technologies described above, another technical scheme disclosed by the invention is:
A metering method for above-mentioned smart electronics water meter, comprises step:
S1, transmitter monitor the output voltage of the first Hall element and the second Hall element, and judge whether described output voltage saltus step occurs, and if so, then enters step S2; If not, then step S1 is repeated;
The hopping sequence of S2, transmitter record first Hall element and the second Hall element;
S3, transmitter judge whether described hopping sequence is the first Hall element adhesive, the second Hall element disconnects, to the first Hall element adhesive, the second Hall element adhesive, to the first Hall element disconnection, the second Hall element adhesive, disconnect to the first Hall element disconnection, the second Hall element again, if, then control electronic measurement numerical value and also add one, if not, then control electronic measurement numerical value and subtract one.
Beneficial effect of the present invention is: being different from the sensor of electronic water meter in prior art is be arranged at water meter inside, the electronic water meter that can only more renew during conventional water meter upgrading, the present invention arranges magnetic on indicator of water gauge, and adopt two Hall elements being arranged at water meter outside to gather the rotation direction of described pointer and to rotate the number of turns, therefore, only magnetic need be set on the pointer of mechanical water meter when mechanical water meter escalates into the electronic water meter with remote meter-reading function, can be detected by external Hall element and calculate water meter value, further, the present invention also by judge described first Hall element second Hall element detect the sequencing of magnetic judge the pointer of mechanical water meter be rotating forward or reverse, thus solve the error in dipping that existing electronic water meter causes because water is reciprocal.
Accompanying drawing explanation
Fig. 1 is the structural representation of smart electronics water meter in an embodiment of the present invention;
Fig. 2 is the structural representation of smart electronics water meter in an embodiment of the present invention;
Fig. 3 is the process flow diagram of the metering method of smart electronics water meter in an embodiment of the present invention;
Label declaration:
1, mechanical water meter; 2, the first Hall element; 3, the second Hall element; 4, transmitter; 5, plastics table cover; 11, pointer; 12, magnetic.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with embodiment.
Explanation of nouns
Transmitter: transmitter has AD input interface and RS485/RS232 communication interface, external pulse input signal (pulse exports equivalent and is set in transmitter by handheld device) can be detected, and pulse signal is converted to data on flows, also by the data of the direct reading instrument of the communication modes such as RS485/RS232, by radio communication function, instrumented data is sent to miscellaneous equipment.Transmitter accesses me and takes charge of sensor, not only can realize flow metering function, can also carry out the metering of rotating flow.
The design of most critical of the present invention is: to be used for detecting in mechanical water meter with the rotation direction of magnetic pointer above mechanical water meter by being placed on by two Hall elements and rotating the water metering that the number of turns calculates water meter, thus is convenient to traditional mechanical water meter and escalates into smart electronics water meter.
Please refer to Fig. 1, a kind of smart electronics water meter, comprise mechanical water meter 1, first Hall element 2, second Hall element 3 and transmitter 4;
One pointer 11 of described mechanical water meter 1 is provided with magnetic 12, and described first Hall element 2 and the second Hall element 3 to be arranged at above mechanical water meter 1 and to be arranged at intervals at described magnetic 12 and rotate circumferentially;
It is outside that described transmitter 4 is arranged at described mechanical water meter 1, and described first Hall element 2 and the second Hall element 3 are electrically connected on described transmitter 4 respectively.
In the present embodiment, described first Hall element 2 and the second Hall element 3 by locked with bolts on mechanical water meter 1 copper gland.
When the first Hall element 2 or the second Hall element 3 detect magnetic 12 will there is saltus step in its output voltage, can be become low-voltage from high voltage saltus step, also can be become high voltage from low-voltage saltus step, by detection Hall element output voltage, transmitter 4 can judge whether indicator of water gauge 11 rotates; Transmitter 4 first produces saltus step by which output voltage of judgement first Hall element 2 and the second Hall element 3, can learn that the pointer 11 of water meter rotates forward or reversion, namely the flow direction flowing through the water of water meter is forward or oppositely, the water consumption of having measured is added that the water yield calculated by Hall element is current variable by transmitter 4 when the described flow direction is forward; Otherwise when the described flow direction reverse, the water consumption of having measured is deducted the water yield calculated by Hall element by transmitter 4 is current variable, thus the error in dipping preventing aqueous reflux and cause.
From foregoing description, beneficial effect of the present invention is: the present invention detects water-meter outdoors by the first Hall element 2 and the second Hall element 3 and to be magnetic the rotation number of turns of body 12 pointer 11 and rotation direction, and judge the direction of current in water meter and the flow of metering current by transmitter 4, wherein, it is outside that described first Hall element 2 and the second Hall element 3 are arranged at mechanical water meter 1, therefore, only need magnetic 12 be set on the pointer 11 of traditional mechanical water meter 1 or pointer 11 is replaced by magnetic 12 pointer 11, and Hall element and transmitter 4 are set outside water meter, mechanical water meter 1 can be escalated into the smart electronics water meter with remote meter-reading function, traditional mechanical water meter 1 is made namely to become electronic water meter through simple change, greatly save the cost of tap water pipe line transformation, and, when sensor or transmitter 4 break down, need only more emat sensor or transmitter 4, greatly save maintenance cost.
Further, in one embodiment, described magnetic 12 is magnet steel, and described magnetic 12 can be arranged on the pointer 11 of the arbitrary dial of mechanical water meter.
Seen from the above description, mechanical water meter 1 is provided with 0.1m
3, 0.01m
3etc. two or more pointer 11, described magnetic 12 is arranged at 0.01m
3pointer 11 on namely can detect the direction that pointer 11 rotates timely, effectively can control again the jump frequency of the first Hall element 2 and the second Hall element 3 output voltage, alleviate the detection burden of transmitter 4.
When magnetic 12 is arranged at 0.01m
3time on pointer 11, the metering algorithm of smart electronics water meter is: transmitter 4 detects the saltus step of the first Hall element 2 and the second Hall element 3 output voltage, when two sensors complete closed variable condition being detected, carrying out umber of pulse and adding up n, and calculating current water consumption n*0.1m
3if described indicator of water gauge 11 rotates forward, then add current water consumption n*0.1m in the water consumption of having measured
3if described indicator of water gauge 11 reverses, then deduct current water consumption n*0.1m in the water consumption of having measured
3.
Certainly, in other embodiments, described magnetic 12 can be that other are with magnetic material, and described magnetic 12 also can be arranged at 0.001m
3on pointer 11 Deng other grades.
Further, in one embodiment, described first Hall element 2 and the second Hall element 3 are relatively set with angle formed by the rotating shaft of magnetic 12 pointer 11 is 50 ° ~ 70 °.
Seen from the above description, in the present embodiment, by arranging the position relationship between described first Hall element 2 and the second Hall element 3, angle formed by itself and pointer 11 rotating shaft is made to be 50 ° ~ 70 °, described magnetic 12 is made to have certain time interval through the first Hall element 2 and the second Hall element 3, make transmitter 4 have the substantial processing time, thus improve the accuracy that transmission judges pointer 11 rotation direction.
In another embodiment, described first Hall element 2 and the angle between the second Hall element 3 and pointer 11 rotating shaft are 45 °.Certainly in other embodiments, described first Hall element 2 and the second Hall element 3 can be other values with the angle of pointer 11 rotating shaft.
Refer to Fig. 2, in one embodiment, this smart electronics water meter also comprises Split plastic table cover 5, and plastics table cover 5 is suitable with described mechanical water meter 1, and described first Hall element 2 and the second Hall element 3 are arranged in plastics table cover 5.
Seen from the above description, described first Hall element 2 and the second Hall element 3 are arranged on the appropriate location of the Split plastic table cover 5 suitable with electronic water meter by present embodiment, when making table cover be covered on described water meter, by rotating the position of two Hall elements and described magnetic 12 (or magnetic 12 pointer 11) described in table cover and adjustable, make the first Hall element 2 and the second Hall element 3 be positioned at described in state the top of magnetic 12 (or magnetic 12 pointer 11) turning circumference.
Further, in one embodiment, described transmitter 4 comprises two AD conversion input ends, and described first Hall element 2 is connected to the first AD conversion input end of described transmitter 4, and the second Hall element 3 is connected to the second AD conversion input end of described transmitter 4.
The output voltage of described first Hall element 2 and the second Hall element 3 is converted to AD value by transmitter 4, sends in transmitter 4 and judges, if variable condition is by the first Hall element 2 adhesive (i.e. output voltage generation saltus step of Hall element, high voltage can be become from low-voltage saltus step, also can be from high voltage saltus step be low-voltage), second Hall element 3 disconnects, to the first Hall element 2 adhesive, second Hall element 3 adhesive, disconnect to the first Hall element 2, second Hall element 3 adhesive, disconnect to the first Hall element 2 again, second Hall element 3 disconnects, then mechanical water meter 1 just makes a circle, mechanical character wheel counting adds one, transmitter 4 makes electronic measurement numerical value also add one, if variable condition is disconnected by the first Hall element 2, the second Hall element 3 adhesive, to the first Hall element 2 adhesive, the second Hall element 3 adhesive, disconnect to the first Hall element 2 adhesive, the second Hall element 3, disconnect to the first Hall element 2 again, the second Hall element 3 disconnects, then mechanical water meter 1 is counter makes a circle, mechanical character wheel counting subtracts one, and transmitter 4 makes electronic measurement numerical value also subtract one.
Refer to Fig. 3, present invention also offers the metering method of above-mentioned smart electronics water meter, comprise step:
S1, transmitter monitor the output voltage of the first Hall element and the second Hall element, and judge whether described output voltage saltus step occurs, and if so, then enters step S2; If not, then step S1 is repeated;
The hopping sequence of S2, transmitter record first Hall element and the second Hall element;
S3, transmitter judge whether described hopping sequence is the first Hall element adhesive, the second Hall element disconnects, to the first Hall element adhesive, the second Hall element adhesive, to the first Hall element disconnection, the second Hall element adhesive, disconnect to the first Hall element 2 again, second Hall element disconnect, if, then control electronic measurement numerical value and also add one, if not, then control electronic measurement numerical value and subtract one.
From foregoing description, beneficial effect of the present invention is: the present invention is by judging which output voltage of the first Hall element and the second Hall element first produces saltus step and judges that indicator of water gauge rotates forward or reversion, namely the water in water meter is forward flow or refluence, and when the described flow direction is forward, the water consumption of having measured is added that the water yield calculated by Hall element is current variable by transmitter; Otherwise when the described flow direction reverse, the water consumption of having measured is deducted the water yield calculated by Hall element by transmitter is current variable, thus the error in dipping preventing aqueous reflux and cause, improve the accuracy of smart electronics water meter measurement.
Further, in one embodiment, describedly judge whether described output voltage saltus step occurs and is specially: transmitter converts the output voltage of described first Hall element and the second Hall element to digital signal value, and judges whether described digital signal value saltus step occurs.
Further, in one embodiment, described magnetic is arranged at mechanical water meter 0.01m
3on the pointer of level.
Seen from the above description, mechanical water meter is provided with 0.1m
3, 0.01m
3etc. two or more pointer, described magnetic is arranged at 0.01m
3pointer on namely can detect timely and effectively can control the direction of indicators turn again the jump frequency of the first Hall element and the second Hall element output voltage, alleviate the detection burden of transmitter.
Further, in one embodiment, described magnetic is magnet steel.
In sum, smart electronics water meter provided by the invention not only can form by carrying out simple transformation to the mechanical water meter in use, greatly save man power and material, and Hall element is arranged in split type table cover, be convenient to Hall element installation and the adjustment with pointer position, and be convenient to daily servicing, simultaneously, the error in dipping that the present invention can prevent aqueous reflux and cause, improves the accuracy of smart electronics water meter remote meter reading.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing instructions of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a smart electronics water meter, is characterized in that, comprises mechanical water meter, the first Hall element, the second Hall element and transmitter;
One pointer of described mechanical water meter is provided with magnetic, and described first Hall element and the second Hall element to be arranged at above mechanical water meter and to be arranged at intervals at described magnetic and rotate circumferentially;
It is outside that described transmitter is arranged at described mechanical water meter, and described first Hall element and the second Hall element are electrically connected on described transmitter respectively.
2. smart electronics water meter according to claim 1, is characterized in that, described magnetic is arranged at mechanical water meter 0.01m
3on the pointer of level.
3. smart electronics water meter according to claim 1, is characterized in that, formed by the rotating shaft that described first Hall element and the second Hall element are relatively set with magnetic pointer, angle is 50 ° ~ 70 °.
4. the smart electronics water meter according to Claims 2 or 3, is characterized in that, also comprises Split plastic table cover, plastics table cover and described mechanical water meter suitable, described first Hall element and the second Hall element are arranged at plastic table and cover.
5. the smart electronics water meter according to Claims 2 or 3, is characterized in that, described first Hall element and the second Hall element by locked with bolts on mechanical water meter copper gland.
6. smart electronics water meter according to claim 1, is characterized in that, described first Hall element is connected to the first AD conversion input end of described transmitter, and the second Hall element is connected to the second AD conversion input end of described transmitter.
7. a metering method for the arbitrary described smart electronics water meter of claim 1 to 6, is characterized in that, comprise step:
S1, transmitter monitor the output voltage of the first Hall element and the second Hall element, and judge whether described output voltage saltus step occurs, and if so, then enters step S2; If not, then step S1 is repeated;
The hopping sequence of S2, transmitter record first Hall element and the second Hall element;
S3, transmitter judge whether described hopping sequence is the first Hall element adhesive, the second Hall element disconnects, to the first Hall element adhesive, the second Hall element adhesive, to the first Hall element disconnection, the second Hall element adhesive, disconnect to the first Hall element disconnection, the second Hall element again, if, then control electronic measurement numerical value and also add one, if not, then control electronic measurement numerical value and subtract one.
8. the metering method of smart electronics water meter according to claim 7, it is characterized in that, describedly judge whether described output voltage saltus step occurs and is specially: transmitter converts the output voltage of described first Hall element and the second Hall element to digital signal value, and judges whether described digital signal value saltus step occurs.
9. the metering method of smart electronics water meter according to claim 7, is characterized in that, described magnetic is arranged at mechanical water meter 0.001m
3, 0.1m
3, 1m
3or 0.01m
3on the pointer of level.
10. the metering method of smart electronics water meter according to claim 8 or claim 9, it is characterized in that, described magnetic is magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410673849.5A CN104330119A (en) | 2014-11-20 | 2014-11-20 | Intelligent electronic water meter and metering method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410673849.5A CN104330119A (en) | 2014-11-20 | 2014-11-20 | Intelligent electronic water meter and metering method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104330119A true CN104330119A (en) | 2015-02-04 |
Family
ID=52404890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410673849.5A Pending CN104330119A (en) | 2014-11-20 | 2014-11-20 | Intelligent electronic water meter and metering method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104330119A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841770A (en) * | 2016-03-25 | 2016-08-10 | 智恒科技股份有限公司 | Water meter pulse signal metering method and system based on interruption and AD sampling |
| CN108151636A (en) * | 2018-01-24 | 2018-06-12 | 上海镁善斯健康科技有限公司 | A kind of medicine bottle service condition monitoring device and method |
| CN109115293A (en) * | 2018-08-24 | 2019-01-01 | 浙江万胜智能科技股份有限公司 | A kind of electronic counting-type water meter |
| CN109374076A (en) * | 2018-12-18 | 2019-02-22 | 武汉力拓达科技有限公司 | A kind of water meter positive and negative rotation pulse collection method, apparatus and intellectual water meter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030089298A1 (en) * | 2001-11-15 | 2003-05-15 | Erwin Holowick | Dual magnetic register for a utility meter |
| CN202582634U (en) * | 2012-03-28 | 2012-12-05 | 河南新天科技股份有限公司 | Modified wireless telemetry water meter device |
| CN202853676U (en) * | 2012-10-22 | 2013-04-03 | 天津市金凤科技发展有限公司 | Intelligent water meter with Hall signal sending sampling mechanism |
| CN103278218A (en) * | 2013-04-23 | 2013-09-04 | 江苏振华信息科技有限公司 | Flow monitoring device used for mechanical water meter |
| CN204202663U (en) * | 2014-11-20 | 2015-03-11 | 福建智恒软件科技有限公司 | A kind of smart electronics water meter |
-
2014
- 2014-11-20 CN CN201410673849.5A patent/CN104330119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030089298A1 (en) * | 2001-11-15 | 2003-05-15 | Erwin Holowick | Dual magnetic register for a utility meter |
| CN202582634U (en) * | 2012-03-28 | 2012-12-05 | 河南新天科技股份有限公司 | Modified wireless telemetry water meter device |
| CN202853676U (en) * | 2012-10-22 | 2013-04-03 | 天津市金凤科技发展有限公司 | Intelligent water meter with Hall signal sending sampling mechanism |
| CN103278218A (en) * | 2013-04-23 | 2013-09-04 | 江苏振华信息科技有限公司 | Flow monitoring device used for mechanical water meter |
| CN204202663U (en) * | 2014-11-20 | 2015-03-11 | 福建智恒软件科技有限公司 | A kind of smart electronics water meter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841770A (en) * | 2016-03-25 | 2016-08-10 | 智恒科技股份有限公司 | Water meter pulse signal metering method and system based on interruption and AD sampling |
| CN105841770B (en) * | 2016-03-25 | 2019-01-22 | 智恒科技股份有限公司 | Based on the water meter pulse signal metering method and its system interrupted and AD is sampled |
| CN108151636A (en) * | 2018-01-24 | 2018-06-12 | 上海镁善斯健康科技有限公司 | A kind of medicine bottle service condition monitoring device and method |
| CN109115293A (en) * | 2018-08-24 | 2019-01-01 | 浙江万胜智能科技股份有限公司 | A kind of electronic counting-type water meter |
| CN109374076A (en) * | 2018-12-18 | 2019-02-22 | 武汉力拓达科技有限公司 | A kind of water meter positive and negative rotation pulse collection method, apparatus and intellectual water meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203163780U (en) | Bi-directional detection sensor assembly for intelligent water meter | |
| CN204202663U (en) | A kind of smart electronics water meter | |
| CN207336293U (en) | A kind of SF with self checking function6Gas telemetering type density meter | |
| CN104330119A (en) | Intelligent electronic water meter and metering method thereof | |
| CN103344295B (en) | Electric water meter | |
| CN203759859U (en) | Deep foundation pit deformation wireless test device and deep foundation pit deformation test system | |
| CN107024252A (en) | It is a kind of resist strong magnetic disturbance without magnetic remote transmitting water meter | |
| CN105067492B (en) | A kind of dust concentration instrument | |
| CN202614292U (en) | Intelligent fluid flow meter | |
| CN103278218A (en) | Flow monitoring device used for mechanical water meter | |
| CN103839397A (en) | Data acquirer based on inductance type sensing technology and data acquisition method | |
| CN207502010U (en) | Inside is equipped with the intellectual water meter of two-way detection sensor component | |
| CN203323817U (en) | Electronic water meter | |
| CN109115293A (en) | A kind of electronic counting-type water meter | |
| CN203323808U (en) | Water meter measurement module | |
| CN204903333U (en) | Teletransmission formula SF6 gas density table | |
| CN201378072Y (en) | Wire on-line weighing machine | |
| CN207585725U (en) | A kind of liquid-level detection device for water tanks based on agricultural plant protection unmanned plane | |
| CN204128614U (en) | A kind of data collector for direct-reading gage | |
| CN205655888U (en) | Small -size mixer -settler interface microwave measuring device | |
| CN203364901U (en) | Flow monitoring device used for mechanical water meter | |
| CN204422016U (en) | A kind of intelligent water-level meter | |
| CN204988374U (en) | Dual turbine flowmeter | |
| CN203721024U (en) | Data collector based on inductance-type sensing technology | |
| CN203224265U (en) | Membrane type gas meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |
|
| WD01 | Invention patent application deemed withdrawn after publication |